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1

Operation of a GERDA Phase I prototype detector in liquid argon and nitrogen  

E-Print Network [OSTI]

The GERDA (GERmanium Detector Array) experiment aiming to search for the neutrinoless double beta decay of 76Ge at the Laboratori Nazionali Del Gran Sasso (LNGS), Italy, will operate bare enriched high-purity germanium (HPGe) detectors in liquid argon. GERDA Phase I will use the enriched diodes from the previous Heidelberg-Moscow (HdM) and IGEX experiments. With the HPGe detectors mounted in a low-mass holder, GERDA aims at an excellent energy resolution and extremely low background. The goal is to check the claim for the neutrinoless double beta decay evidence in the HdM 76Ge experiment within one year of data taking. Before dismounting the enriched diodes from their cryostat, the performance parameters of the HdM and the IGEX detectors have been measured. The diodes have been removed from their cryostats, their dimensions measured and they have been put under va-cuum in a transportation container. They are now being refurbished for GERDA Phase I at Canberra Semiconductor NV. Before operating the enriched diodes, a non-enriched HPGe p-type detector mounted in a low-mass holder is operated in the liquid argon test facility of the GERDA Detector Laboratory (GDL) at LNGS. Since January 2006, the testing of the prototype detector is being carried out in the GDL as well as at the site of the detector manufacturer.

M. Barnabé Heider; A. Bakalyarov; L. Bezrukov; C. Cattadori; O. Chkvorets; K. Gusev; M. Hult; I. Kirpichnikov; V. Lebedev; G. Marissens; P. Peiffer; S. Schönert; M. Shirchenko; A. Smolnikov; A. Vasenko; S. Vasiliev; S. Zhukov

2008-12-20T23:59:59.000Z

2

FLARE, Fermilab Liquid Argon Experiments  

E-Print Network [OSTI]

Mature technology of Liquid Argon Time Projection Chambers in conjunction with intense neutrino beams constructed at Fermilab offer a broad program of neutrino physics for the next decade.

L. Bartoszek

2004-08-24T23:59:59.000Z

3

ICARUS and Status of Liquid Argon Technology  

E-Print Network [OSTI]

ICARUS is the largest liquid argon TPC detector ever built (~600 ton LAr mass). It operates underground at the LNGS laboratory in Gran Sasso. It has been smoothly running since summer 2010, collecting data with the CNGS beam and with cosmics. Liquid argon TPCs are really "electronic bubble chamber" providing a completely uniform imaging and calorimetry with unprecedented accuracy on massive volumes. ICARUS is internationally considered as a milestone towards the realization of the next generation of massive detectors (~tens of ktons) for neutrino and rare event physics. Results will be presented on the data collected during 2010 with the detector at LNGS.

Dorota Stefan

2011-10-07T23:59:59.000Z

4

Studies of a Liquid Argon Time Projection Chamber  

E-Print Network [OSTI]

, industrial- scale purification of argon to 0.1 ppb of O2. Here, we propose to undertake R&D on the two of these topics that can be addressed by a relatively small-scale effort: 1. Verification that a liquid argon phase could be studied. At this scale of detector, the best technology ­ a total absorption tracking

McDonald, Kirk

5

A Radiation-Hard Dual Channel 4-bit Pipeline for a 12-bit 40 MS/s ADC Prototype with extended Dynamic Range for the ATLAS Liquid Argon Calorimeter Readout Electronics Upgrade at the CERN LHC  

E-Print Network [OSTI]

The design of a radiation-hard dual channel 12-bit 40 MS/s pipeline ADC with extended dynamic range is presented, for use in the readout electronics upgrade for the ATLAS Liquid Argon Calorimeters at the CERN Large Hadron Collider. The design consists of two pipeline A/D channels with four Multiplying Digital-to-Analog Converters with nominal 12-bit resolution each. The design, fabricated in the IBM 130 nm CMOS process, shows a performance of 68 dB SNDR at 18 MHz for a single channel at 40 MS/s while consuming 55 mW/channel from a 2.5 V supply, and exhibits no performance degradation after irradiation. Various gain selection algorithms to achieve the extended dynamic range are implemented and tested.

Jayanth Kuppambatti; Jaroslav Ban; Timothy Andeen; Peter Kinget; Gustaaf Brooijmans

2013-07-31T23:59:59.000Z

6

The ATLAS Liquid Argon Calorimeter: Construction, Integration, Commissioning  

SciTech Connect (OSTI)

The ATLAS liquid argon (LAr) calorimeter system consists of an electromagnetic barrel calorimeter and two end caps with electromagnetic, hadronic and forward calorimeters. The liquid argon sampling technique, with an accordion geometry was chosen for the barrel electromagnetic calorimeter (EMB) and adapted to the end cap (EMEC). The hadronic end cap calorimeter (HEC) uses a copper-liquid argon sampling technique with flat plate geometry and is subdivided in depth in two wheels per end-cap. Finally, the forward calorimeter (FCAL) is composed of three modules employing cylindrical electrodes with thin liquid argon gaps.The construction of the full calorimeter system is complete since mid-2004. Production modules constructed in the home institutes were integrated into wheels at CERN in 2003-2004, and inserted into the three cryostats. They passed their first complete cold test before the lowering into the ATLAS cavern. Results of quality checks (e.g. electrical, mechanical, ...) performed on all the 190304 read-out channels after cool down will be reported. End 2004 the ATLAS barrel electromagnetic (EM) calorimeter was installed in the ATLAS cavern and since summer 2005 the front-end electronics are being connected and tested. Results of this first commissioning phase will be shown to demonstrate the high standards of quality control for our detectors.

Aleksa, Martin [PH-Department, CERN, 1211 Geneva (Switzerland)

2006-10-27T23:59:59.000Z

7

E-Print Network 3.0 - allene-doped liquid argon Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

argon, and liquid krypton. Results are compared with reported relaxation measurements in gas... ). The observed Tlp minima for H: in liquid ... Source: Ecole Polytechnique,...

8

A steerable UV laser system for the calibration of liquid argon time projection chambers  

E-Print Network [OSTI]

A number of liquid argon time projection chambers (LAr TPC's) are being build or are proposed for neutrino experiments on long- and short baseline beams. For these detectors a distortion in the drift field due to geometrical or physics reasons can affect the reconstruction of the events. Depending on the TPC geometry and electric drift field intensity this distortion could be of the same magnitude as the drift field itself. Recently, we presented a method to calibrate the drift field and correct for these possible distortions. While straight cosmic ray muon tracks could be used for calibration, multiple coulomb scattering and momentum uncertainties allow only a limited resolution. A UV laser instead can create straight ionization tracks in liquid argon, and allows one to map the drift field along different paths in the TPC inner volume. Here we present a UV laser feed-through design with a steerable UV mirror immersed in liquid argon that can point the laser beam at many locations through the TPC. The straight ionization paths are sensitive to drift field distortions, a fit of these distortion to the linear optical path allows to extract the drift field, by using these laser tracks along the whole TPC volume one can obtain a 3D drift field map. The UV laser feed-through assembly is a prototype of the system that will be used for the MicroBooNE experiment at the Fermi National Accelerator Laboratory (FNAL).

A. Ereditato; I. Kreslo; M. Lüthi; C. Rudolf von Rohr; M. Schenk; T. Strauss; M. Weber; M. Zeller

2014-10-04T23:59:59.000Z

9

Oxygen contamination in liquid Argon: combined effects on ionization electron charge and scintillation light  

E-Print Network [OSTI]

A dedicated test of the effects of Oxygen contamination in liquid Argon has been performed at the INFN-Gran Sasso Laboratory (LNGS, Italy) within the WArP R&D program. Two detectors have been used: the WArP 2.3 lt prototype and a small (0.7 lt) dedicated detector, coupled with a system for the injection of controlled amounts of gaseous Oxygen. Purpose of the test with the 0.7 lt detector is to detect the reduction of the long-lived component lifetime of the Argon scintillation light emission at increasing O2 concentration. Data from the WArP prototype are used for determining the behavior of both the ionization electron lifetime and the scintillation long-lived component lifetime during the O2-purification process activated in closed loop during the acquisition run. The electron lifetime measurements allow to infer the O2 content of the Argon and correlate it with the long-lived scintillation lifetime data. The effect of Oxygen contamination on the scintillation light has been thus measured over a wide range of O2 concentration, spanning from about 10^-3 ppm up to about 10 ppm. The rate constant of the light quenching process induced by Oxygen in LAr has been found to be k'(O2)=0.54+-0.03 micros^-1 ppm^-1.

R. Acciarri; M. Antonello; B. Baibussinov; M. Baldo-Ceolin; P. Benetti; F. Calaprice; E. Calligarich; M. Cambiaghi; N. Canci; F. Carbonara; F. Cavanna; S. Centro; A. G. Cocco; F. Di Pompeo; G. Fiorillo; C. Galbiati; V. Gallo; L. Grandi; G. Meng; I. Modena; C. Montanari; O. Palamara; L. Pandola; F. Pietropaolo; G. L. Raselli; M. Roncadelli; M. Rossella; C. Rubbia; E. Segreto; A. M. Szelc; F. Tortorici; S. Ventura; C. Vignoli

2008-04-08T23:59:59.000Z

10

Readiness of the ATLAS Liquid Argon Calorimeter for LHC Collisions  

E-Print Network [OSTI]

The ATLAS liquid argon calorimeter has been operating continuously since August 2006. At this time, only part of the calorimeter was readout, but since the beginning of 2008, all calorimeter cells have been connected to the ATLAS readout system in preparation for LHC collisions. This paper gives an overview of the liquid argon calorimeter performance measured in situ with random triggers, calibration data, cosmic muons, and LHC beam splash events. Results on the detector operation, timing performance, electronics noise, and gain stability are presented. High energy deposits from radiative cosmic muons and beam splash events allow to check the intrinsic constant term of the energy resolution. The uniformity of the electromagnetic barrel calorimeter response along eta (averaged over phi) is measured at the percent level using minimum ionizing cosmic muons. Finally, studies of electromagnetic showers from radiative muons have been used to cross-check the Monte Carlo simulation. The performance results obtained u...

Aad, G; Abdallah, J; Abdelalim, A A; Abdesselam, A; Abdinov, O; Abi, B; Abolins, M; Abramowicz, H; Abreu, H; Acharya, B S; Adams, D L; Addy, T N; Adelman, J; Adorisio, C; Adragna, P; Adye, T; Aefsky, S; Aguilar-Saavedra, J A; Aharrouche, M; Ahlen, S P; Ahles, F; Ahmad, A; Ahmed, H; Ahsan, M; Aielli, G; Akdogan, T; Ĺkesson, T P A; Akimoto, G; Akimov, A V; Aktas, A; Alam, M S; Alam, M A; Albert, J; Albrand, S; Aleksa, M; Aleksandrov, I N; Alessandria, F; Alexa, C; Alexander, G; Alexandre, G; Alexopoulos, T; Alhroob, M; Aliev, M; Alimonti, G; Alison, J; Aliyev, M; Allport, P P; Allwood-Spiers, S E; Almond, J; Aloisio, A; Alon, R; Alonso, A; Alviggi, M G; Amako, K; Amelung, C; Ammosov, V V; Amorim, A; Amorós, G; Amram, N; Anastopoulos, C; Andeen, T; Anders, C F; Anderson, K J; Andreazza, A; Andrei, V; Anduaga, X S; Angerami, A; Anghinolfi, F; Anjos, N; Antonaki, A; Antonelli, M; Antonelli, S; Antunovic, B; Anulli, F; Aoun, S; Arabidze, G; Aracena, I; Arai, Y; Arce, A T H; Archambault, J P; Arfaoui, S; Arguin, J-F; Argyropoulos, T; Arik, E; Arik, M; Armbruster, A J; Arnaez, O; Arnault, C; Artamonov, A; Arutinov, D; Asai, M; Asai, S; Asfandiyarov, R; Ask, S; Ĺsman, B; Asner, D; Asquith, L; Assamagan, K; Astbury, A; Astvatsatourov, A; Atoian, G; Auerbach, B; Auge, E; Augsten, K; Aurousseau, M; Austin, N; Avolio, G; Avramidou, R; Axen, D; Ay, C; Azuelos, G; Azuma, Y; Baak, M A; Baccaglioni, G; Bacci, C; Bach, A; Bachacou, H; Bachas, K; Backes, M; Badescu, E; Bagnaia, P; Bai, Y; Bailey, D C; Bain, T; Baines, J T; Baker, O K; Baker, M D; Baltasar Dos Santos Pedrosa, F; Banas, E; Banerjee, P; Banerjee, S; Banfi, D; Bangert, A; Bansal, V; Baranov, S P; Baranov, S; Barashkou, A; Barber, T; Barberio, E L; Barberis, D; Barbero, M; Bardin, D Y; Barillari, T; Barisonzi, M; Barklow, T; Barlow, N; Barnett, B M; Barnett, R M; Baron, S; Baroncelli, A; Barr, A J; Barreiro, F; BarreiroGuimarĂŁes da Costa, J; Barrillon, P; Barros, N; Bartoldus, R; Bartsch, D; Bastos, J; Bates, R L; Bathe, S; Batkova, L; Batley, J R; Battaglia, A; Battistin, M; Bauer, F; Bawa, H S; Bazalova, M; Beare, B; Beau, T; Beauchemin, P H; Beccherle, R; Becerici, N; Bechtle, P; Beck, G A; Beck, H P; Beckingham, M; Becks, K H; Bedajanek, I; Beddall, A J; Beddall, A; Bednár, P; Bednyakov, V A; Bee, C; Begel, M; Behar Harpaz, S; Behera, P K; Beimforde, M; Belanger-Champagne, C; Bell, P J; Bell, W H; Bella, G; Bellagamba, L; Bellina, F; Bellomo, M; Belloni, A; Belotskiy, K; Beltramello, O; Ben Ami, S; Benary, O; Benchekroun, D; Bendel, M; Benedict, B H; Benekos, N; Benhammou, Y; Benincasa, G P; Benjamin, D P; Benoit, M; Bensinger, J R; Benslama, K; Bentvelsen, S; Beretta, M; Berge, D; Bergeaas Kuutmann, E; Berger, N; Berghaus, F; Berglund, E; Beringer, J; Bernardet, K; Bernat, P; Bernhard, R; Bernius, C; Berry, T; Bertin, A; Besson, N; Bethke, S; Bianchi, R M; Bianco, M; Biebel, O; Biesiada, J; Biglietti, M; Bilokon, H; Bindi, M; Binet, S; Bingul, A; Bini, C; Biscarat, C; Bitenc, U; Black, K M; Blair, R E; Blanchard, J-B; Blanchot, G; Blocker, C; Blocki, J; Blondel, A; Blum, W; Blumenschein, U; Bobbink, G J; Bocci, A; Boehler, M; Boek, J; Boelaert, N; Böser, S; Bogaerts, J A; Bogouch, A; Bohm, C; Bohm, J; Boisvert, V; Bold, T; Boldea, V; Boldyrev, A; Bondarenko, V G; Bondioli, M; Boonekamp, M; Booth, J R A; Bordoni, S; Borer, C; Borisov, A; Borissov, G; Borjanovic, I; Borroni, S; Bos, K; Boscherini, D; Bosman, M; Bosteels, M; Boterenbrood, H; Bouchami, J; Boudreau, J; Bouhova-Thacker, E V; Boulahouache, C; Bourdarios, C; Boyd, J; Boyko, I R; Bozovic-Jelisavcic, I; Bracinik, J; Braem, A; Branchini, P; Brandenburg, G W; Brandt, A; Brandt, G; Brandt, O; Bratzler, U; Brau, B; Brau, J E; Braun, H M; Brelier, B; Bremer, J; Brenner, R; Bressler, S; Breton, D; Brett, N D; Britton, D; Brochu, F M; Brock, I; Brock, R; Brodbeck, T J; Brodet, E; Broggi, F; Bromberg, C; Brooijmans, G; Brooks, W K; Brown, G; Brubaker, E; Bruckman de Renstrom, P A; Bruncko, D; Bruneliere, R; Brunet, S; Bruni, A; Bruni, G; Bruschi, M; Buanes, T; Bucci, F; Buchanan, J; Buchholz, P; Buckley, A G; Budagov, I A; Budick, B; Büscher, V; Bugge, L; Bulekov, O; Bunse, M; Buran, T; Burckhart, H; Burdin, S; Burgess, T; Burke, S; Busato, E; Bussey, P; Buszello, C P; Butin, F; Butler, B; Butler, J M; Buttar, C M; Butterworth, J M; Byatt, T; Caballero, J; Cabrera Urbán, S; Caforio, D; Cakir, O; Calafiura, P; Calderini, G; Calfayan, P; Calkins, R; Caloba, L P; Caloi, R; Calvet, D; Camarri, P; Cambiaghi, M; Cameron, D; Campabadal-Segura, F; Campana, S; Campanelli, M; Canale, V; Canelli, F; Canepa, A; Cantero, J; Capasso, L; Capeans-Garrido, M D M; Caprini, I; Caprini, M; Capua, M; Caputo, R; Caracinha, D; Caramarcu, C; Cardarelli, R; Carli, T; Carlino, G; Carminati, L; Caron, B; Caron, S; Carrillo Montoya, G D; Carron Montero, S; Carter, A A; Carter, J R

2010-01-01T23:59:59.000Z

11

Liquid Argon Cryogenic Detector Calibration by Inelastic Scattering of Neutrons  

E-Print Network [OSTI]

A method for calibration of cryogenic liquid argon detector response to recoils with certain energy -8.2 keV - is proposed. The method utilizes a process of inelastic scattering of monoenergetic neutrons produced by fusion DD neutron generator. Features of kinematics of inelastic scattering cause sufficient (forty times) increase in count rate of useful events relative to traditional scheme exploited elastic scattering with the same recoil energy and compatible energy resolution. The benefits of the proposed scheme of calibration most well implemented with the use of tagged neutron generator as a neutron source that allows to eliminate background originated from casual coincidence of signals on cryogenic detector and additional detector of scattered neutrons.

Polosatkin, Sergey; Dolgov, Alexander

2014-01-01T23:59:59.000Z

12

Liquid Argon Cryogenic Detector Calibration by Inelastic Scattering of Neutrons  

E-Print Network [OSTI]

A method for calibration of cryogenic liquid argon detector response to recoils with certain energy -8.2 keV - is proposed. The method utilizes a process of inelastic scattering of monoenergetic neutrons produced by fusion DD neutron generator. Features of kinematics of inelastic scattering cause sufficient (forty times) increase in count rate of useful events relative to traditional scheme exploited elastic scattering with the same recoil energy and compatible energy resolution. The benefits of the proposed scheme of calibration most well implemented with the use of tagged neutron generator as a neutron source that allows to eliminate background originated from casual coincidence of signals on cryogenic detector and additional detector of scattered neutrons.

Sergey Polosatkin; Evgeny Grishnyaev; Alexander Dolgov

2014-07-10T23:59:59.000Z

13

First measurement of the ionization yield of nuclear recoils in liquid argon  

SciTech Connect (OSTI)

Liquid phase argon has long been used as a target medium for particle detection via scintillation light. Recently there has been considerable interest in direct detection of both hypothetical darkmatter particles and coherent elastic neutrino nucleus scattering. These as-yet unobserved neutral particle interactions are expected to result in a recoiling argon atom O(keV), generally referred to in the literature as a nuclear recoil. This prompts the question of the available electromagnetic signal in a liquid argon detector. In this Letter we report the first measurement of the ionization yield (Qy), detected electrons per unit energy, resulting from nuclear recoils in liquid argon, measured at 6.7 keV. This is also the lowest energy measurement of nuclear recoils in liquid argon.

Joshi, T. [Univ. of California, Berkeley, CA (United States). Dept. of Nuclear Engineering; Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States); Sangiorgio, Samuele [Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States); Bernstein, A. [Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States); Foxe, Michael P. [Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States); Pennsylvania State Univ., University Park, PA (United States). Dept. of Mechanical and Nuclear Engineering; Hagmann, Chris [Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States); Jovanovic, Igor [Pennsylvania State Univ., University Park, PA (United States). Dept. of Mechanical and Nuclear Engineering; Kazkaz, K. [Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States); Mozin, Vladimir V. [Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States); Norman, E. B. [Univ. of California, Berkeley, CA (United States). Dept. of Nuclear Engineering; Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States); Pereverzev, S. V. [Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States); Rebassoo, Finn O. [Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States); Sorensen, Peter F. [Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)

2014-05-01T23:59:59.000Z

14

Ultrasonic attenuation and volume viscosity in liquid argon, nitrogen and helium  

E-Print Network [OSTI]

. Ultrasonic attenuation in liquid nitrogen at 49. 45 Hc/sec ll. Dersity dependence of the volume viscosity in l. iquid nitrogen 12. Density dependence of Qv/&(S in liquid nitrogen 40 13. Ultrasonic attenuation in liquid helium at 4. 20 K 43 14. Ultrasonic... attenuation in liquid helium at 3. 69"K 44 15. Qv in liquid argon and nitrogen as a function of reduced density 51 LIST OF TABLES 1. Data and results for the calculation of volume viscosity in liquid argon 2. Data and results for the calculation of volume...

Singer, James Robert

2012-06-07T23:59:59.000Z

15

A Demonstration of Light Guides for Light Detection in Liquid Argon TPCs  

E-Print Network [OSTI]

Liquid Argon (LAr) Time Projection Chambers (TPCs) are a developing technology that is becoming a popular choice for neutrino and dark matter experiments due to the low cost of the LAr as a target material and the high ...

Ignarra, C.M.

16

Electron-Hadron shower discrimination in a liquid argon time projection chamber  

E-Print Network [OSTI]

By exploiting structural differences between electromagnetic and hadronic showers in a multivariate analysis we present an efficient Electron-Hadron discrimination algorithm for liquid argon time projection chambers, validated using Geant4 simulated data.

J. J. Back; G. J. Barker; A. J. Bennieston; S. B. Boyd; B. Morgan; Y. A. Ramachers

2012-10-08T23:59:59.000Z

17

Free electron lifetime achievements in Liquid Argon Imaging TPC  

E-Print Network [OSTI]

A key feature for the success of the Liquid Argon TPC technology is the industrial purification against electro-negative impurities, especially Oxygen and Nitrogen remnants, which have to be initially and continuously kept at an exceptional purity. New purification techniques have been applied to a 120 litres LAr-TPC test facility in the INFN-LNL laboratory. Through-going muon tracks have been used to monitor the LAr purity. The short path length used (30 cm) is compensated by the high accuracy in the observation of the specific ionization of cosmic rays muons at sea level. A free electron lifetime of (21.4+7.3-4.3) ms, namely > 15.8 ms at 90 % C.L. has been observed under stable conditions over several weeks, corresponding to about 15 ppt (part per trillion) of Oxygen equivalent. At 500 V/cm, where the electron speed is approximately of 1.5 mm/us, the free electron lifetime >15 ms corresponds to an attenuation <15 % for a drift path of 5 m, opening the way to reliable operation of LAr TPC for exceptionall...

Baibussinov, B; Calligarich, E; Centro, S; Cieslik, K; Farnese, C; Fava, A; Gibin, D; Guglielmi, A; Meng, G; Pietropaolo, F; Rubbia, C; Varanini, F; Ventura, S

2010-01-01T23:59:59.000Z

18

Operation of a high purity germanium crystal in liquid argon as a Compton suppressed radiation spectrometer  

E-Print Network [OSTI]

A high purity germanium crystal was operated in liquid argon as a Compton suppressed radiation spectrometer. Spectroscopic quality resolution of less than 1% of the full-width half maximum of full energy deposition peaks was demonstrated. The construction of the small apparatus used to obtain these results is reported. The design concept is to use the liquid argon bath to both cool the germanium crystal to operating temperatures and act as a scintillating veto. The scintillation light from the liquid argon can veto cosmic-rays, external primordial radiation, and gamma radiation that does not fully deposit within the germanium crystal. This technique was investigated for its potential impact on ultra-low background gamma-ray spectroscopy. This work is based on a concept initially developed for future germanium-based neutrinoless double-beta decay experiments.

John L. Orrell; Craig E. Aalseth; John F. Amsbaugh; Peter J. Doe; Todd W. Hossbach

2006-10-11T23:59:59.000Z

19

Operation of the D0 uranium liquid-argon calorimeter system  

SciTech Connect (OSTI)

The DO calorimeter consists of three separate cryostats containing uranium modules in liquid argon. This odorimeter has transverse segmentation of 0.1 [times] 0.1 in [eta] [times] 0 and consists of eight or nine longitudinal readout segments. The coverage in [eta] extends to 4. As a result of the large coverage and fine segmentation there are 50,000 channels of electronics. After a brief description of the electronics, stability and noise aspects will be investigated. Results of the liquid-argon purity studies will be discssed. The backgrounds in the calorimeter due to the Fermilab main ring will also be examined.

Guida, J. (State Univ. of New York, Stony Brook, NY (United States))

1992-12-01T23:59:59.000Z

20

Operation of the D0 uranium liquid-argon calorimeter system  

SciTech Connect (OSTI)

The DO calorimeter consists of three separate cryostats containing uranium modules in liquid argon. This odorimeter has transverse segmentation of 0.1 {times} 0.1 in {eta} {times} 0 and consists of eight or nine longitudinal readout segments. The coverage in {eta} extends to 4. As a result of the large coverage and fine segmentation there are 50,000 channels of electronics. After a brief description of the electronics, stability and noise aspects will be investigated. Results of the liquid-argon purity studies will be discssed. The backgrounds in the calorimeter due to the Fermilab main ring will also be examined.

Guida, J. [State Univ. of New York, Stony Brook, NY (United States); The D0 Collaboration

1992-12-01T23:59:59.000Z

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21

Search for Dark Matter with Liquid Argon and Pulse Shape Discrimination: Results from DEAP-1 and Status of DEAP-3600  

E-Print Network [OSTI]

In the last decade, Direct Dark Matter searches has become a very active research program, spawning dozens of projects world wide and leading to contradictory results. It is on this stage that the Dark matter Experiment with liquid Argon and Pulse shape discrimination (DEAP) is about to enter. With a 3600~kg liquid argon target and a 1000~kg fiducial mass, it is designed to run background free during 3 years, reaching an unprecedented sensitivity of 10$^{-46}$~cm$^2$ for a WIMP mass of 100 GeV. In order to achieve this impressive feat, the collaboration followed a two-pronged approach: a careful selection of every material entering the construction of the detector in order to suppress the backgrounds, and optimum use of the pulse shape discrimination (PSD) technique to separate the nuclear recoils from the electronic recoils. Using the experience acquired ffrom the 7~kg-prototype DEAP-1, a 3600~kg detector is being completed at SNOLAB (Sudbury, CANADA) and is expected to start taking data in mid-2014.

Gorel, P

2014-01-01T23:59:59.000Z

22

Ionization EM calorimetry with accordion electrodes and liquid krypton or argon  

SciTech Connect (OSTI)

The results of a study and tests of a liquid krypton/argon electromagnetic calorimeter with accordion electrode structure are briefly summarized. This includes the calorimeter response to electrons and muons, energy, pointing and timing resolution, and a measurement by multiple sampling. The electrode layout with fine segmentation is illustrated.

Radeka, V.

1993-11-01T23:59:59.000Z

23

The ATLAS Liquid Argon Calorimeter Construction, Integration, Commissioning and Performance from Selected Particle Beam Test Results  

E-Print Network [OSTI]

­Construction of the ATLAS liquid argon calorimeter is now complete and integration with the ATLAS detector in the cavern with the move of the barrel cryostat to the ATLAS cavern. Since then, integration of the endcap calorimeters, waiting to be lowered into the cavern. The other will be moved to Point 1 by late 2005 / early 2006

Krieger, Peter

24

First results from a Dark Matter search with liquid Argon at 87 K in the Gran Sasso Underground Laboratory.  

E-Print Network [OSTI]

in a massive target (ultimately many tons) of ultra pure Liquid Argon at 87 K. A high selectivity for Argon by detectors operating at the very low temperatures of a few tens of mK. A heat (or phonon) channel measures

Golwala, Sunil

25

Direct observation of muon-pair production by high-energy muons in the liquid-argon calorimeter BARS  

Science Journals Connector (OSTI)

Experimental data accumulated over a long-term exposure of the big liquid-argon spectrometer BARS at the Institute for High Energy Physics (IHEP, Protvino) in a horizontal ... the aim of selecting events that cor...

V. B. Anikeev; S. N. Gurzhiev; S. P. Denisov; O. S. Zolina…

2005-02-01T23:59:59.000Z

26

A measurement of E/{pi} for a fast lead liquid argon calorimeter  

SciTech Connect (OSTI)

The NA34 (HELIOS) calorimeter has measured e/{pi} {congruent} 1.1 in a uranium/liquid argon calorimeter with a shaping time of 135 nsec. Lead may be a viable alternative, but e/{pi} must first be measured at fast shaping times in lead. We re preparing to measure e/{pi} at momenta ranging from 0.5 to 20 GeV/c and with shaping times of 50, 100 and 150 nsec.

Makowiecki, D.; Gordon, H.A.; Ma, H.; Murtagh, M.; Radeka, V.; Rahm, D.; Rescia, S. [Brookhaven National Lab., Upton, NY (United States); Abrams, G.S.; Groom, D.E.; Kirsten, F.; Levi, M.; Siegrist, J. [Lawrence Berkeley Lab., CA (United States); Amako, K.; Inaba, O.; Kondo, T. [National Lab. for High Energy Physics, Tsukuba, Ibaraki (Japan); Baden, A.R.; Fong, D.; Hadley, N.; Kunori, S.; Skuja, A. [Maryland Univ., College Park, MD (United States); Bowen, T.; Forden, G.; Jenkins, E.; Johns, K.; Rutherfoord, J.; Shupe, M. [Arizona Univ., Tucson, AZ (United States); Burnett, T.; Cook, V.; Davisson, R.; Mockett, P.; Rothberg, J.; Williams, R.W. [Washington Univ., Seattle, WA (United States); Cremaldi, L.; Reidy, J.; Summers, D. [Mississippi Univ., University, MS (United States); DiGiacomo, N. [Martin Marietta Aerospace, Denver, CO (United States). Astronautics Group; Draper, P.; Ferbel, T.; Lobkowicz, F. [Rochester Univ., NY (United States); Faust, J.; Hauptman, J.; Pang, M. [Iowa State Univ. of Science and Technology, Ames, IA (United States); Gabriel, T.A. [Oak Ridge National Lab., TN (United States); Hagopian, V.; Womersley, J. [Florida State Univ., Tallahassee, FL (United States); Handler, T. [Tennessee Univ., Knoxville, TN (United States); Hitlin, D. [California Inst. of Tech., Pasadena, CA (United States); Mulholland, G.T. [Fermi National Accelerator Lab., Batavia, IL (United States); Watanabe, Y. [Tokyo Inst. of Tech. (Japan); Weerts, H. [Michigan State Univ., East Lansing, MI (United States)

1990-12-31T23:59:59.000Z

27

A measurement of E/. pi. for a fast lead liquid argon calorimeter  

SciTech Connect (OSTI)

The NA34 (HELIOS) calorimeter has measured e/{pi} {congruent} 1.1 in a uranium/liquid argon calorimeter with a shaping time of 135 nsec. Lead may be a viable alternative, but e/{pi} must first be measured at fast shaping times in lead. We re preparing to measure e/{pi} at momenta ranging from 0.5 to 20 GeV/c and with shaping times of 50, 100 and 150 nsec.

Makowiecki, D.; Gordon, H.A.; Ma, H.; Murtagh, M.; Radeka, V.; Rahm, D.; Rescia, S. (Brookhaven National Lab., Upton, NY (United States)); Abrams, G.S.; Groom, D.E.; Kirsten, F.; Levi, M.; Siegrist, J. (Lawrence Berkeley Lab., CA (United States)); Amako, K.; Inaba, O.; Kondo, T. (National Lab. for High Energy Physics, Tsukuba, Ibaraki (Japan)); Baden, A.R.; Fong, D.; Hadley, N.; Kunori, S.; Skuja, A. (Maryland U

1990-01-01T23:59:59.000Z

28

A Large Liquid Argon TPC for Off-axis NuMI Neutrino Physics  

SciTech Connect (OSTI)

The ICARUS collaboration has shown the power of the liquid argon time projection chamber (LArTPC) technique to image events with bubble-chamber-like quality. I will describe a proposed long-baseline {nu}e appearance experiment utilizing a large ({>=} 15 kton1) LArTPC placed off-axis of Fermilab's NuMI {nu}{mu} beam. The total LArTPC program as it presently stands, which includes a number of smaller R and D projects designed to examine the key design issues, will be outlined.

Menary, Scott [York University, Toronto (Canada)

2006-07-11T23:59:59.000Z

29

A CMOS current preamplifier and shaper with 50{Omega} line driver for liquid argon preshower  

SciTech Connect (OSTI)

In the field of liquid argon calorimetry for the LHC detector program, a CMOS ``current conveyor`` preamplifier was cold preshower. It is an improved version of the ICON circuit which had been formerly designed by the RD2 collaboration. This paper also presents a CMOS linear output buffer, featuring a dynamic range close to {+-}2V on a 50{Omega} load, for a 21 mW power dissipation at 77K. Furthermore a biquadratic 7 MHz bandpass filter was developed, based on a high speed rail to rail CMOS operational amplifier. It is meant to be the filter placed at the output of the ICON preamplifier.

Dzahini, D.; Guerre-Chaley, B.; Pouxe, J.; Rossetto, O. [CNRS, Grenoble (France). Inst. des Sciences Nucleaires] [CNRS, Grenoble (France). Inst. des Sciences Nucleaires

1995-08-01T23:59:59.000Z

30

MicroBooNE: A New Liquid Argon Time Projection Chamber Experiment  

SciTech Connect (OSTI)

Liquid Argon Time Projection Chamber detectors are well suited to study neutrino interactions, and are an intriguing option for future massive detectors capable of measuring the parameters that characterize neutrino oscillations. These detectors combine fine-grained tracking with calorimetry, allowing for excellent imaging and particle identification ability. In this talk the details of the MicroBooNE experiment, a 175 ton LArTPC which will be exposed to Fermilab's Booster Neutrino Beamline starting in 2011, will be presented. The ability of MicroBooNE to differentiate electrons from photons gives the experiment unique capabilities in low energy neutrino interaction measurements.

Soderberg, M.

2009-10-01T23:59:59.000Z

31

A large liquid argon time projection chamber for long-baseline, off-axis neutrino oscillation physics with the NuMI beam  

SciTech Connect (OSTI)

Results from neutrino oscillation experiments in the last ten years have revolutionized the field of neutrino physics. While the overall oscillation picture for three neutrinos is now well established and precision measurements of the oscillation parameters are underway, crucial issues remain. In particular, the hierarchy of the neutrino masses, the structure of the neutrino mixing matrix, and, above all, CP violation in the neutrino sector are the primary experimental challenges in upcoming years. A program that utilizes the newly commissioned NuMI neutrino beamline, and its planned upgrades, together with a high-performance, large-mass detector will be in an excellent position to provide decisive answers to these key neutrino physics questions. A Liquid Argon time projection chamber (LArTPC) [2], which combines fine-grained tracking, total absorption calorimetry, and scalability, is well matched for this physics program. The few-millimeter-scale spatial granularity of a LArTPC combined with dE/dx measurements make it a powerful detector for neutrino oscillation physics. Scans of simulated event samples, both directed and blind, have shown that electron identification in {nu}{sub e} charged current interactions can be maintained at an efficiency of 80%. Backgrounds for {nu}{sub e} appearance searches from neutral current events with a {pi}{sup 0} are reduced well below the {approx} 0.5-1.0% {nu}{sub e} contamination of the {nu}{sub {mu}} beam [3]. While the ICARUS collaboration has pioneered this technology and shown its feasibility with successful operation of the T600 (600-ton) LArTPC [4], a detector for off-axis, long-baseline neutrino physics must be many times more massive to compensate for the low event rates. We have a baseline concept [5] based on the ICARUS wire plane structure and commercial methods of argon purification and housed in an industrial liquefied-natural-gas tank. Fifteen to fifty kton liquid argon capacity tanks have been considered. A very preliminary cost estimate for a 50-kton detector is $100M (unloaded) [6]. Continuing R&D will emphasize those issues pertaining to implementation of this very large scale liquid argon detector concept. Key hardware issues are achievement and maintenance of argon purity in the environment of an industrial tank, the assembly of very large electrode planes, and the signal quality obtained from readout electrodes with very long wires. Key data processing issues include an initial focus on rejection of cosmic rays for a surface experiment. Efforts are underway at Fermilab and a small number of universities in the US and Canada to address these issues with the goal of embarking on the construction of industrial-scale prototypes within one year. One such prototype could be deployed in the MiniBooNE beamline or in the NuMI surface building where neutrino interactions could be observed. These efforts are complementary to efforts around the world that include US participation, such as the construction of a LArTPC for the 2-km detector location at T2K [7]. The 2005 APS neutrino study [1] recommendations recognize that ''The development of new technologies will be essential for further advances in neutrino physics''. In a recent talk to EPP2010, Fermilab director P. Oddone, discussing the Fermilab program, states on his slides: ''We want to start a long term R&D program towards massive totally active liquid Argon detectors for extensions of NOvA''. [8]. As such, we are poised to enlarge our R&D efforts to realize the promise of a large liquid argon detector for neutrino physics.

Finley, D.; Jensen, D.; Jostlein, H.; Marchionni, A.; Pordes, S.; Rapidis, P.A.; /Fermilab; Bromberg, C.; /Michigan State U.; Lu, C.; McDonald, T.; /Princeton U.; Gallagher,; Mann, A.; Schneps, J.; /Tufts U.; Cline, D.; Sergiampietri, F.; Wang, H.; /UCLA; Curioni, A.; Fleming, B.T.; /Yale U.; Menary, S.; /York U., Canada

2005-09-01T23:59:59.000Z

32

Catalyst-Assisted Production of Olefins from Natural Gas Liquids: Prototype Development and Full-Scale Testing, April 2013  

Broader source: Energy.gov [DOE]

Catalyst-Assisted Production of Olefins from Natural Gas Liquids: Prototype Development and Full-Scale Testing

33

Monitoring and data quality assessment of the ATLAS liquid argon calorimeter  

E-Print Network [OSTI]

The liquid argon calorimeter is a key component of the ATLAS detector installed at the CERN Large Hadron Collider. The primary purpose of this calorimeter is the measurement of electrons and photons. It also provides a crucial input for measuring jets and missing transverse momentum. An advanced data monitoring procedure was designed to quickly identify issues that would affect detector performance and ensure that only the best quality data are used for physics analysis. This article presents the validation procedure developed during the 2011 and 2012 LHC data taking periods, in which more than 98% of the proton proton luminosity recorded by ATLAS at a centre-of-mass energy of 7 and 8 TeV had calorimeter data quality suitable for physics analysis.

ATLAS Collaboration

2014-05-15T23:59:59.000Z

34

The ArDM - a ton-scale liquid argon experiment for direct Dark Matter Detection  

SciTech Connect (OSTI)

The ArDM is a ton-scale double phase detector for the direct search of the Weakly Interacting Massive Particle (WIMPs) as Dark Matter candidates. The detector is based on a liquid Argon (LAr) target. The present goal is to assemble, fully characterize the detector on the surface and then operate it at an underground facility. The scintillation light and ionization charge produced by recoiling nuclei in WIMP-Ar collision can be measured independently. The discrimination of the WIMP induced nuclear recoils from the electron/gamma background is done using the pulse discrimination technique and the ratio between the produced light and charge. The experiment and the last results from the detector commissioning are presented.

Otyugova, Polina [Physik-Institut der Universitaet Zuerich, Winterthurerstrasse 190, CH-8057 Zuerich (Switzerland)

2010-06-23T23:59:59.000Z

35

E-Print Network 3.0 - atlas liquid argon Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

argon atoms were packed in a face... the SWNT in order to avoid influence from the bulk phonon spectrum of ... Source: Maruyama, Shigeo - Department of Mechanical...

36

The ATLAS liquid argon calorimeter: One year of LHC operation and future upgrade plans for HL-LHC  

SciTech Connect (OSTI)

An overview of the ATLAS liquid-argon calorimeter system is provided, along with a discussion of its operation and performance during the first year of LHC running. Upgrade planning related to the proposed high-luminosity upgrade of the LHC is also discussed, with an emphasis on the forward part of the calorimeter where the effects of the higher luminosity are a particular challenge. (authors)

Krieger, P. W. [Dept. of Physics, Univ. of Toronto, Toronto, ON (Canada)

2011-07-01T23:59:59.000Z

37

Precise 3D track reconstruction algorithm for the ICARUS T600 liquid argon time projection chamber detector  

E-Print Network [OSTI]

Liquid Argon Time Projection Chamber (LAr TPC) detectors offer charged particle imaging capability with remarkable spatial resolution. Precise event reconstruction procedures are critical in order to fully exploit the potential of this technology. In this paper we present a new, general approach of three-dimensional reconstruction for the LAr TPC with a practical application to track reconstruction. The efficiency of the method is evaluated on a sample of simulated tracks. We present also the application of the method to the analysis of real data tracks collected during the ICARUS T600 detector operation with the CNGS neutrino beam.

M. Antonello; B. Baibussinov; P. Benetti; E. Calligarich; N. Canci; S. Centro; A. Cesana; K. Cieslik; D. B. Cline; A. G. Cocco; A. Dabrowska; D. Dequal; A. Dermenev; R. Dolfini; C. Farnese; A. Fava; A. Ferrari; G. Fiorillo; D. Gibin; S. Gninenko; A. Guglielmi; M. Haranczyk; J. Holeczek; A. Ivashkin; J. Kisiel; I. Kochanek; J. Lagoda; S. Mania; A. Menegolli; G. Meng; C. Montanari; S. Otwinowski; A. Piazzoli; P. Picchi; F. Pietropaolo; P. Plonski; A. Rappoldi; G. L. Raselli; M. Rossella; C. Rubbia; P. Sala; A. Scaramelli; E. Segreto; F. Sergiampietri; D. Stefan; J. Stepaniak; R. Sulej; M. Szarska; M. Terrani; F. Varanini; S. Ventura; C. Vignoli; H. Wang; X. Yang; A. Zalewska; K. Zaremba

2012-10-18T23:59:59.000Z

38

A system to test the effects of materials on the electron drift lifetime in liquid argon and observations on the effect of water  

SciTech Connect (OSTI)

A materials test system (MTS) has been developed at FNAL to assess the suitability of materials for use in a large liquid argon time projection chamber. During development of the MTS, it was noted that controlling the cryostat pressure with a 'raining' condenser reduced the electron drift lifetime in the liquid argon. The effect of condensing has been investigated using a series of passive materials to filter the condensate. We report the results of these studies and of tests on different candidate materials for detector construction. The inferred reduction of electron drift lifetime by water concentrations in the parts per trillion is of particular interest.

Andrews, R.; Jaskierny, W.; Jostlein, H.; Kendziora, C.; Pordes, S.; Tope, T.; /Fermilab; ,

2009-07-01T23:59:59.000Z

39

Depleted Argon from Underground Sources  

SciTech Connect (OSTI)

Argon is a strong scintillator and an ideal target for Dark Matter detection; however {sup 39}Ar contamination in atmospheric argon from cosmic ray interactions limits the size of liquid argon dark matter detectors due to pile-up. Argon from deep underground is depleted in {sup 39}Ar due to the cosmic ray shielding of the earth. In Cortez, Colorado, a CO{sub 2} well has been discovered to contain approximately 600 ppm of argon as a contamination in the CO{sub 2}. We first concentrate the argon locally to 3% in an Ar, N{sub 2}, and He mixture, from the CO{sub 2} through chromatographic gas separation, and then the N{sub 2} and He will be removed by continuous distillation to purify the argon. We have collected 26 kg of argon from the CO{sub 2} facility and a cryogenic distillation column is under construction at Fermilab to further purify the argon.

Back, H. O.; Galbiati, C.; Goretti, A.; Loer, B.; Montanari, D.; Mosteiro, P. [Department of Physics, Princeton University, Jadwin Hall, Princeton, NJ 08544 (United States); Alexander, T.; Alton, A.; Rogers, H. [Augustana College, Physics Department, 2001 South Summit Ave., Sioux Fall, SD 57197 (United States); Kendziora, C.; Pordes, S. [Fermi National Accelerator Laboratory, P.O. Box 500, Batavia, IL 60510 (United States)

2011-04-27T23:59:59.000Z

40

arXiv:1004.0373v3[physics.ins-det]8May2012 Measurement of scintillation efficiency for nuclear recoils in liquid argon  

E-Print Network [OSTI]

arXiv:1004.0373v3[physics.ins-det]8May2012 Measurement of scintillation efficiency for nuclear results for nuclear recoil energies between 10 and 250 keVr at zero electric field. II. REVIEW OF PHYSICAL University, New Haven, CT (Dated: May 9, 2012) The scintillation light yield of liquid argon from nuclear

Sheldon, Nathan D.

Note: This page contains sample records for the topic "liquid argon prototype" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


41

E-Print Network 3.0 - argon calorimeters construction Sample...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Calorimeter 1 Pascal Pralavorio (for the ATLAS Liquid Argon... operation on the LHC in 2005. The collab- oration has chosen a Liquid Argon electromagnetic calorimeter......

42

E-Print Network 3.0 - argon electromagnetic calorimeter Sample...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Calorimeter 1 Pascal Pralavorio (for the ATLAS Liquid Argon... operation on the LHC in 2005. The collab- oration has chosen a Liquid Argon electromagnetic calorimeter......

43

Study of the material photon and electron background and the liquid argon detector veto efficiency of the CDEX-10 experiment  

E-Print Network [OSTI]

The China Dark Matter Experiment (CDEX) is located at the China Jinping underground laboratory (CJPL) and aims to directly detect the WIMP flux with high sensitivity in the low mass region. Here we present a study of the predicted photon and electron backgrounds including the background contribution of the structure materials of the germanium detector, the passive shielding materials, and the intrinsic radioactivity of the liquid argon that serves as an anti-Compton active shielding detector. A detailed geometry is modeled and the background contribution has been simulated based on the measured radioactivities of all possible components within the GEANT4 program. Then the photon and electron background level in the energy region of interest (<10^-2 events kg-1 day-1 keV-1 (cpkkd)) is predicted based on Monte Carlo simulations. The simulated result is consistent with the design goal of CDEX-10 experiment, 0.1 cpkkd, which shows that the active and passive shield design of CDEX-10 is effective and feasible.

Jian Su; Zhi Zeng; Hao MA; Qian Yue; Jian-Ping Cheng; Jian-Ping Chang; Nan Chen; Ning Chen; Qing-Hao Chen; Yun-Hua Chen; Yo-Chun Chuang; Zhi Deng; Qiang Du; Hui Gong; Xi-Qing Hao; Qing-Ju He; Han-Xiong Huang; Teng-Rui Huang; Hao Jiang; Ke-Jun Kang; Hau-Bin Li; Jian-Min Li; Jin Li; Jun Li; Xia Li; Xin-Ying Li; Xue-Qian Li; Yu-Lan Li; Yuan-Jing Li; Heng-Yi Liao; Fong-Kay Lin; Shin-Ted Lin; Shu-Kui Liu; Lan-Chun Lü; Shao-Ji Mao; Jian-Qiang Qin; Jie Ren; Jing Ren; Xi-Chao Ruan; Man-Bin Shen; Lakhwinder Singh; Manoj Kumar Singh; Arun Kumar Soma; Chang-Jian Tang; Chao-Hsiung Tseng; Ji-Min Wang; Li Wang; Qing Wang; Henry Tsz-King Wong; Shi-Yong Wu; Yu-Cheng Wu; Hao-Yang Xing; Yin Xu; Tao Xue; Li-Tao Yang; Song-Wei Yang; Nan Yi; Chun-Xu Yu; Hao Yu; Xun-Zhen Yu; Xiong-Hui Zeng; Lan Zhang; Yun-Hua Zhang; Ming-Gang Zhao; Wei Zhao; Zu-Ying Zhou; Jing-Jun Zhu; Wei-Bin Zhu; Xue-Zhou Zhu; Zhong-Hua Zhu

2014-02-19T23:59:59.000Z

44

Study of the material photon and electron background and the liquid argon detector veto efficiency of the CDEX-10 experiment  

E-Print Network [OSTI]

The China Dark Matter Experiment (CDEX) is located at the China Jinping underground laboratory (CJPL) and aims to directly detect the WIMP flux with high sensitivity in the low mass region. Here we present a study of the predicted photon and electron backgrounds including the background contribution of the structure materials of the germanium detector, the passive shielding materials, and the intrinsic radioactivity of the liquid argon that serves as an anti-Compton active shielding detector. A detailed geometry is modeled and the background contribution has been simulated based on the measured radioactivities of all possible components within the GEANT4 program. Then the photon and electron background level in the energy region of interest (<10^-2 events kg-1 day-1 keV-1 (cpkkd)) is predicted based on Monte Carlo simulations. The simulated result is consistent with the design goal of CDEX-10 experiment, 0.1 cpkkd, which shows that the active and passive shield design of CDEX-10 is effective and feasible.

Su, Jian; MA, Hao; Yue, Qian; Cheng, Jian-Ping; Chang, Jian-Ping; Chen, Nan; Chen, Ning; Chen, Qing-Hao; Chen, Yun-Hua; Chuang, Yo-Chun; Deng, Zhi; Du, Qiang; Gong, Hui; Hao, Xi-Qing; He, Qing-Ju; Huang, Han-Xiong; Huang, Teng-Rui; Jiang, Hao; Kang, Ke-Jun; Li, Hau-Bin; Li, Jian-Min; Li, Jin; Li, Jun; Li, Xia; Li, Xin-Ying; Li, Xue-Qian; Li, Yu-Lan; Li, Yuan-Jing; Liao, Heng-Yi; Lin, Fong-Kay; Lin, Shin-Ted; Liu, Shu-Kui; Lü, Lan-Chun; Mao, Shao-Ji; Qin, Jian-Qiang; Ren, Jie; Ren, Jing; Ruan, Xi-Chao; Shen, Man-Bin; Singh, Lakhwinder; Singh, Manoj Kumar; Soma, Arun Kumar; Tang, Chang-Jian; Tseng, Chao-Hsiung; Wang, Ji-Min; Wang, Li; Wang, Qing; Wong, Henry Tsz-King; Wu, Shi-Yong; Wu, Yu-Cheng; Xing, Hao-Yang; Xu, Yin; Xue, Tao; Yang, Li-Tao; Yang, Song-Wei; Yi, Nan; Yu, Chun-Xu; Yu, Hao; Yu, Xun-Zhen; Zeng, Xiong-Hui; Zhang, Lan; Zhang, Yun-Hua; Zhao, Ming-Gang; Zhao, Wei; Zhou, Zu-Ying; Zhu, Jing-Jun; Zhu, Wei-Bin; Zhu, Xue-Zhou; Zhu, Zhong-Hua

2014-01-01T23:59:59.000Z

45

E-Print Network 3.0 - argon calorimeter commissioning Sample...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

argon calorimeter is now complete and integration with the ATLAS detector in the cavern... an accordion-geometry liquid argon (LAr) ... Source: Krieger, Peter - Department of...

46

E-Print Network 3.0 - argon calorimeter calibration Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

argon calorimeter is now complete and integration with the ATLAS detector in the cavern... an accordion-geometry liquid argon (LAr) electromagnetic ... Source: Krieger, Peter...

47

Depleted argon from underground sources  

SciTech Connect (OSTI)

Argon is a powerful scintillator and an excellent medium for detection of ionization. Its high discrimination power against minimum ionization tracks, in favor of selection of nuclear recoils, makes it an attractive medium for direct detection of WIMP dark matter. However, cosmogenic {sup 39}Ar contamination in atmospheric argon limits the size of liquid argon dark matter detectors due to pile-up. The cosmic ray shielding by the earth means that Argon from deep underground is depleted in {sup 39}Ar. In Cortez Colorado a CO{sub 2} well has been discovered to contain approximately 500ppm of argon as a contamination in the CO{sub 2}. In order to produce argon for dark matter detectors we first concentrate the argon locally to 3-5% in an Ar, N{sub 2}, and He mixture, from the CO{sub 2} through chromatographic gas separation. The N{sub 2} and He will be removed by continuous cryogenic distillation in the Cryogenic Distillation Column recently built at Fermilab. In this talk we will discuss the entire extraction and purification process; with emphasis on the recent commissioning and initial performance of the cryogenic distillation column purification.

Back, H.O.; /Princeton U.; Alton, A.; /Augustana U. Coll.; Calaprice, F.; Galbiati, C.; Goretti, A.; /Princeton U.; Kendziora, C.; /Fermilab; Loer, B.; /Princeton U.; Montanari, D.; /Fermilab; Mosteiro, P.; /Princeton U.; Pordes, S.; /Fermilab

2011-09-01T23:59:59.000Z

48

Measurement of the ionization yield of nuclear recoils in liquid argon at 80 and 233 keV  

E-Print Network [OSTI]

The energy calibration of nuclear recoil detectors is of primary importance to rare-event experiments such as those of direct dark matter search and coherent neutrino-nucleus scattering. In particular, such a calibration is performed by measuring the ionization yield of nuclear recoils in liquid Ar and Xe detection media, using neutron elastic scattering off nuclei. In the present work, the ionization yield for nuclear recoils in liquid Ar has for the first time been measured in the higher energy range, at 80 and 233 keV, using a two-phase Cryogenic Avalanche Detector (CRAD) and DD neutron generator. The ionization yield in liquid Ar at an electric field of 2.3 kV/cm amounted to 7.8+/-1.1 and 9.7+/-1.3 e-/keV at 80 and 233 keV respectively. The Jaffe model for nuclear recoil-induced ionization, in contrast to that Thomas-Imel, can probably consistently describe the energy dependence of the ionization yield.

A. Bondar; A. Buzulutskov; A. Dolgov; E. Grishnyaev; S. Polosatkin; L. Shekhtman; E. Shemyakina; A. Sokolov

2014-09-23T23:59:59.000Z

49

E-Print Network 3.0 - argon 45 Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

based on a liquid argon time-projection chamber (TPC) 4, 5, 6, 7 - is very cost competitive... with coarser sampling devices. Furthermore, a small (40 ton) liquid...

50

Studies of a three-stage dark matter and neutrino observatory based on multi-ton combinations of liquid xenon and liquid argon detectors  

E-Print Network [OSTI]

We study a three stage dark matter and neutrino observatory based on multi-ton two-phase liquid Xe and Ar detectors with sufficiently low backgrounds to be sensitive to WIMP dark matter interaction cross sections down to 10E-47 cm^2, and to provide both identification and two independent measurements of the WIMP mass through the use of the two target elements in a 5:1 mass ratio, giving an expected similarity of event numbers. The same detection systems will also allow measurement of the pp solar neutrino spectrum, the neutrino flux and temperature from a Galactic supernova, and neutrinoless double beta decay of 136Xe to the lifetime level of 10E27 - 10E28 y corresponding to the Majorana mass predicted from current neutrino oscillation data. The proposed scheme would be operated in three stages G2, G3, G4, beginning with fiducial masses 1-ton Xe + 5-ton Ar (G2), progressing to 10-ton Xe + 50-ton Ar (G3) then, dependent on results and performance of the latter, expandable to 100-ton Xe + 500-ton Ar (G4). This ...

Arisaka, K; Smith, P F; Beltrame, P; Ghag, C; Lung, K; Teymourian, A; Wang, H; Cline, D B

2011-01-01T23:59:59.000Z

51

E-Print Network 3.0 - argon 38 beams Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

beams Search Powered by Explorit Topic List Advanced Search Sample search results for: argon 38 beams Page: << < 1 2 3 4 5 > >> 1 Studies of a Liquid Argon Time Projection Chamber...

52

E-Print Network 3.0 - argon 39 beams Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

beams Search Powered by Explorit Topic List Advanced Search Sample search results for: argon 39 beams Page: << < 1 2 3 4 5 > >> 1 Large and Small (Far and Near) Liquid Argon...

53

E-Print Network 3.0 - argon scintillation light Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

argon scintillation light Page: << < 1 2 3 4 5 > >> 1 Large Area Imaging Detector for Neutron Scattering Based on Boron-Rich Liquid Scintillator Summary: to a novel...

54

Direct Simulation of Argon Rectification in Single Bubble Sonoluminescence  

E-Print Network [OSTI]

collapse when the bubble is hot. The gases will react with water vapor to form soluble species, which into the liquid. The flux of stable dissolved gas species from the liquid (such as argon, nitrogen, hydrogen, there is still an incomplete quantitative prediction of the phenomena. Recently, the importance of water vapor

Storey, Brian D.

55

Thermophysical properties of argon  

SciTech Connect (OSTI)

The entire report consists of tables of thermodynamic properties (including sound velocity, thermal conductivity and diffusivity, Prandtl number, density) of argon at 86 to 400/degree/K, in the form of isobars over 0.9 to 100 bars. (DLC)

Jaques, A.

1988-02-01T23:59:59.000Z

56

The Solar Argon Abundance  

E-Print Network [OSTI]

The solar argon abundance cannot be directly derived by spectroscopic observations of the solar photosphere. The solar Ar abundance is evaluated from solar wind measurements, nucleosynthetic arguments, observations of B stars, HII regions, planetary nebulae, and noble gas abundances measured in Jupiter's atmosphere. These data lead to a recommended argon abundance of N(Ar) = 91,200(+/-)23,700 (on a scale where Si = 10^6 atoms). The recommended abundance for the solar photosphere (on a scale where log N(H) = 12) is A(Ar)photo = 6.50(+/-)0.10, and taking element settling into account, the solar system (protosolar) abundance is A(Ar)solsys = 6.57(+/-)0.10.

Katharina Lodders

2007-10-24T23:59:59.000Z

57

E-Print Network 3.0 - argon storage tanks Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

storage tanks Search Powered by Explorit Topic List Advanced Search Sample search results for: argon storage tanks Page: << < 1 2 3 4 5 > >> 1 Large and Small (Far and Near) Liquid...

58

E-Print Network 3.0 - argon 37 target Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Letter of Intent Summary: arXiv:hep-ex0408121v124Aug2004 Letter of Intent FLARE Fermilab Liquid ARgon Experiments Version 1... Oscillations Studies with the Off-axis...

59

Liquid Argon Dielectric Strength Measurements Sarah Lockwitz  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

to avoid high fields with the cryostat wall * Grooves have been cut in the PE with a CNC lathe * Reduce breakdown along PE surface 11 TPC C r y o s t a t W a l l Feedthrough...

60

Sonoluminescing air bubbles rectify argon  

E-Print Network [OSTI]

The dynamics of single bubble sonoluminescence (SBSL) strongly depends on the percentage of inert gas within the bubble. We propose a theory for this dependence, based on a combination of principles from sonochemistry and hydrodynamic stability. The nitrogen and oxygen dissociation and subsequent reaction to water soluble gases implies that strongly forced air bubbles eventually consist of pure argon. Thus it is the partial argon (or any other inert gas) pressure which is relevant for stability. The theory provides quantitative explanations for many aspects of SBSL.

Detlef Lohse; Michael P. Brenner; Todd F. Dupont; Sascha Hilgenfeldt; Blaine Johnston

1996-05-07T23:59:59.000Z

Note: This page contains sample records for the topic "liquid argon prototype" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


61

Test report -- Prototype core sampler  

SciTech Connect (OSTI)

The purpose of this test is to determine the adequacy of the prototype sampler, provided to Westinghouse Hanford Company (WHC) by DOE-RL. The sampler was fabricated for DOE-RL by the Concord Company by request of DOE-RL. This prototype sampler was introduced as a technology that can be easily deployed (similar to the current auger system) and will reliably collect representative samples. The sampler is similar to the Universal Sampler i.e., smooth core barrel and piston with an O-ring seal, but lacks a rotary valve near the throat of the sampler. This makes the sampler inappropriate for liquid sampling, but reduces the outside diameter of the sampler considerably, which should improve sample recovery. Recovery testing was performed with the supplied sampler in three different consistencies of Kaolin sludge simulants.

Linschooten, C.G.

1995-01-17T23:59:59.000Z

62

MPACT Fast Neutron Multiplicity System Prototype Development  

SciTech Connect (OSTI)

This document serves as both an FY2103 End-of-Year and End-of-Project report on efforts that resulted in the design of a prototype fast neutron multiplicity counter leveraged upon the findings of previous project efforts. The prototype design includes 32 liquid scintillator detectors with cubic volumes 7.62 cm in dimension configured into 4 stacked rings of 8 detectors. Detector signal collection for the system is handled with a pair of Struck Innovative Systeme 16-channel digitizers controlled by in-house developed software with built-in multiplicity analysis algorithms. Initial testing and familiarization of the currently obtained prototype components is underway, however full prototype construction is required for further optimization. Monte Carlo models of the prototype system were performed to estimate die-away and efficiency values. Analysis of these models resulted in the development of a software package capable of determining the effects of nearest-neighbor rejection methods for elimination of detector cross talk. A parameter study was performed using previously developed analytical methods for the estimation of assay mass variance for use as a figure-of-merit for system performance. A software package was developed to automate these calculations and ensure accuracy. The results of the parameter study show that the prototype fast neutron multiplicity counter design is very nearly optimized under the restraints of the parameter space.

D.L. Chichester; S.A. Pozzi; J.L. Dolan; M.T. Kinlaw; S.J. Thompson; A.C. Kaplan; M. Flaska; A. Enqvist; J.T. Johnson; S.M. Watson

2013-09-01T23:59:59.000Z

63

Prototype Design, Manufacturing, and Testing  

Science Journals Connector (OSTI)

Prototyping describes the practical realization of the theoretical concept of the nonimaging Fresnel lens. The steps that are to be taken in order to get a working prototype of the lens manufactured are as fol...

Dr. Ralf Leutz; Dr. Akio Suzuki

2001-01-01T23:59:59.000Z

64

factsheet: National Prototype Center  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

the World Safer the World Safer This enduring national asset integrates science and technology for manufacturing success that meets our customer's special manufacturability challenges. Since its establishment in 1997, more than 5,0 0 0 i ndustr ies and government agencies have capitalized on the resources of the National Prototype Center (NPC). These customers received subject -matter expertise as well as critical manufacturing resources enabling development of i n novat ive manufacturing solutions. Specializing in high-risk, complex prototype work, the NPC integrates manufacturing, engineering and science to build first-of-a-kind products. It also modifies or enhances existing products and develops new, innovative manufacturing processes to solve the toughest manufacturing problems.

65

LIQUID ARGON CRYOGENICS AT FERMILAB Ben Carls Fermilab  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

(LAr) kept at 88K * Prevent heat leaks which produce convective flow in the cryostat and ice build up outside * Need LN 2 for cooling and obviously LAr, places requirements on...

66

INTRODUCTION TO SCINTILLATION LIGHT IN LIQUID ARGON Ben Jones...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

* Large quantity required at low cost * Raw gas : air * Produced by industrial distillation and then purification with molecular sieves and filters * Contaminants include...

67

Large and Small (Far and Near) Liquid Argon Detectors  

E-Print Network [OSTI]

estimate given on p. 19. $112M for a 50 kton detector (incl. 30% contingency). Refrigeration (100 kW @ 90K module. 5 #12;7. Modularity. Most cost effective to build a single, large module. 50403020100 Number

McDonald, Kirk

68

Prototyping of the ILC Baseline Positron Target  

SciTech Connect (OSTI)

The ILC positron system uses novel helical undulators to create a powerful photon beam from the main electron beam. This beam is passed through a titanium target to convert it into electron-positron pairs. The target is constructed as a 1 m diameter wheel spinning at 2000 RPM to smear the 1 ms ILC pulse train over 10 cm. A pulsed flux concentrating magnet is used to increase the positron capture efficiency. It is cooled to liquid nitrogen temperatures to maximize the flatness of the magnetic field over the 1 ms ILC pulse train. We report on prototyping effort on this system.

Gronberg, J; Brooksby, C; Piggott, T; Abbott, R; Javedani, J; Cook, E

2012-02-29T23:59:59.000Z

69

LArGe - Active background suppression using argon scintillation for the GERDA $0\  

E-Print Network [OSTI]

LArGe is a GERDA low-background test facility to study novel background suppression methods in a low-background environment, for future application in the GERDA experiment. Similar to GERDA, LArGe operates bare germanium detectors submersed into liquid argon (1 m$^3$, 1.4 tons), which in addition is instrumented with photomultipliers to detect argon scintillation light. The scintillation signals are used in anti-coincidence with the germanium detectors to effectively suppress background events that deposit energy in the liquid argon. The background suppression efficiency was studied in combination with a pulse shape discrimination (PSD) technique using a BEGe detector for various sources, which represent characteristic backgrounds to GERDA. Suppression factors of a few times $10^3$ have been achieved. First background data of LArGe with a coaxial HPGe detector (without PSD) yield a background index of (0.12$-$4.6)$\\cdot 10^{-2}$ cts/(keV$\\cdot$kg$\\cdot$y) (90% C.L.), which is at the level of GERDA Phase I. Fu...

Agostini, M; Budjáš, D; Cattadori, C; Gangapshev, A; Gusev, K; Heisel, M; Junker, M; Klimenko, A; Lubashevskiy, A; Pelczar, K; Schönert, S; Smolnikov, A; Zuzel, G

2015-01-01T23:59:59.000Z

70

Micro- and Bio-Rapid Prototyping Using Drop-on-Demand 3D Printing  

Science Journals Connector (OSTI)

Rapid prototyping or referred as layered manufacturing has been widely used in fabricating 3D components from CAD data. It has evolved from liquid, plastic, powder to metal-based systems in the past two decades. ...

Jerry Fuh

2014-09-01T23:59:59.000Z

71

Diamond film growth argon-carbon plasmas  

DOE Patents [OSTI]

A method and system are disclosed for manufacturing diamond film. The method involves forming a carbonaceous vapor, providing a gas stream of argon, hydrogen and hydrocarbon and combining the gas with the carbonaceous vapor, passing the combined carbonaceous vapor and gas carrier stream into a chamber, forming a plasma in the chamber causing fragmentation of the carbonaceous and deposition of a diamond film on a substrate. 29 figs.

Gruen, D.M.; Krauss, A.R.; Liu, S.Z.; Pan, X.Z.; Zuiker, C.D.

1998-12-15T23:59:59.000Z

72

Catalyst-Assisted Production of Olefins from Natural Gas Liquids...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Catalyst-Assisted Production of Olefins from Natural Gas Liquids: Prototype Development and Full-Scale Testing New Process Produces Ethylene More Efficiently and Reduces Coke...

73

Catalyst-Assisted Production of Olefins from Natural Gas Liquids...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Catalyst-Assisted Production of Olefins from Natural Gas Liquids: Prototype Development and Full-Scale Testing, April 2013 Catalyst-Assisted Production of Olefins from Natural Gas...

74

E-Print Network 3.0 - argon 50 Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

plasma discharges in argon, nitrogen, air... a mixture of nitrogen and argon gas and laser photoionization of organic seed gas in the pressure range of 1... to control the argon...

75

Rapid prototyping of green composites  

E-Print Network [OSTI]

Rapid prototyping employs digital fabrication techniques to quickly manufacture parts. However, the available materials are not yet suitable for making strong, large or durable objects. Composites are materials which are ...

Peek, Nadya (Nadya Meile)

2010-01-01T23:59:59.000Z

76

A Microfluidic System for the Continuous Recycling of Unmodified Homogeneous Palladium Catalysts through Liquid/Liquid Phase Separation  

E-Print Network [OSTI]

A prototype microflow system for the continuous recycling of homogeneous catalysts through liquid/liquid phase separation was developed and its effectiveness demonstrated in a challenging palladium-catalyzed hydroxylation ...

Li, Pengfei

77

Radio-frequency induction plasmas at atmospheric pressure: Mixtures of hydrogen, nitrogen, and oxygen with argon  

Science Journals Connector (OSTI)

Numerical calculations are reported which simulate atmospheric-pressure radiofrequency induction plasmas consisting of either pure argon or mixtures of argon with hydrogen, nitrogen, or oxygen. These calculati...

S. L. Girshick; W. Yu

1990-12-01T23:59:59.000Z

78

E-Print Network 3.0 - argon method Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

39.95 AMU Synonyms Argon-40 * Argon (ACGIH... -contained breathing apparatus, rubber boots, and heavy rubber gloves. METHODS ... Source: Choi, Kyu Yong - Department of Chemical...

79

E-Print Network 3.0 - argon plasma atomic Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

importance. A recent study of kineticsand decayprocesses in argon has shown that the 4s atomic... of an argon plasma by transient visible absorption spectroscopy from...

80

E-Print Network 3.0 - argon chlorides Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

and 266 nm photoreaction of acetyl chloride in xenon and argon... matrixes. Experimental Section Neat and argon matrix-isolated thin films of acid chlorides are deposited... -gas...

Note: This page contains sample records for the topic "liquid argon prototype" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


81

E-Print Network 3.0 - argon spectral lines Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

spectral lines Search Powered by Explorit Topic List Advanced Search Sample search results for: argon spectral lines Page: << < 1 2 3 4 5 > >> 1 Characterization of argon arc...

82

Hanford prototype corrosion probe operational experience  

SciTech Connect (OSTI)

High-level nuclear wastes at the Hanford Site are stored underground in carbon steel double-shell and single-shell tanks. The installation of a prototype corrosion monitoring system into double- shell tank 241-AZ-101 was completed in August, 1996. The system monitors fluctuations in corrosion current and potential (electrochemical noise) occurring on three electrode arrays immersed in the waste liquid and in the vapor space above the waste. The system also supports the use of Tafel and linear polarization resistance testing. By monitoring and analyzing the data from these techniques, changes; in the corrosive characteristics of the waste have been rapidly detected and correlated with operational changes in the tank.

Edgemon, G.L.

1996-10-03T23:59:59.000Z

83

Hanford prototype corrosion probe operational experience  

SciTech Connect (OSTI)

High-level nuclear wastes at the Hanford Site are stored underground in carbon steel double-shell and single-shell tanks. The installation of a prototype corrosion monitoring system into double-shell tank 241-AZ-101 was completed in August, 1996. The system monitors fluctuations in corrosion current and potential (electrochemical noise) occurring on three electrode arrays immersed in the waste liquid and in the vapor space above the waste. The system also supports the use of Tafel and linear polarization resistance testing. By monitoring and analyzing the data from these techniques, changes in the corrosive characteristics of the waste have been rapidly detected and correlated with operational changes in the tank.

Edgemon, G.L.; Nelson, J.L.; Ohl, P.C. [Lockheed Martin Hanford Corp., Richland, WA (United States); Bell, G.E.C. [M.J. Schiff and Associates, Inc., Claremont, CA (United States)

1997-08-01T23:59:59.000Z

84

Energy loss characteristics of heavy ions in nitrogen, carbon dioxide, argon, hydrocarbon gases and tradescantia tissue  

E-Print Network [OSTI]

Energy loss characteristics of heavy ions in nitrogen, carbon dioxide, argon, hydrocarbon gases and tradescantia tissue

Dennis, J A

1971-01-01T23:59:59.000Z

85

argon 40 target: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

6 JOURNAL DE PHYSIQUE CoZZoque CY, suppZ6ment au n07, Tome 40, JuiZZet 1979, page C7-33 TIME DEPENDENCEOF CATAPHORESISIN A NEON-ARGON MIXTURE. Physics Websites Summary:...

86

Numerical Study of Radiation Emission from the Argon Plasma Focus  

Science Journals Connector (OSTI)

Ion populations and emitted spectrum of argon plasma have been calculated using the POPULATE and SPECTRA codes of the RATION suite at different conditions (electron temperatures, electron densities, ion densities...

M. Akel; S. Alsheikh Salo; C. S. Wong

2013-04-01T23:59:59.000Z

87

Prototype Validation Exercise (PROVE) Project  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Validation > PROVE Validation > PROVE The Prototype Validation Exercise (PROVE) Project Overview The Prototype Validation Exercise (PROVE) was a mini field campaign conducted at the Jornada Experimental Range in the Chihuahuan Desert, near Las Cruces, New Mexico in May 1997. The goals of PROVE were to: Gain experience in the collection and use of field data for EOS product validation Develop protocols for coordination, measurement, and data archival Compile a synoptic land and atmospheric data set for testing algorithms The remote-sensing portion of PROVE involved investigators from three NASA Earth Observing System (EOS) instrument teams: MODIS (Moderate-Resolution Imaging Spectrometer) ASTER (Advanced Space-borne Thermal Emission and Reflectance Radiometer) MISR (Multi-Angle Imaging Spectro Radiometer)

88

Yucca Mountain project prototype testing  

SciTech Connect (OSTI)

The U.S. DOE is responsible for characterizing the Yucca Mountain site in Nevada to determine its suitability for development as a geologic repository to isolate high-level nuclear waste for at least 10,000 years. This unprecedented task relies in part on measurements made with relatively new methods or applications, such as dry coring and overcoring for studies to be conducted from the land surface and in an underground facility. The Yucca Mountain Project has, since 1988, implemented a program of equipment development and methods development for a broad spectrum of hydrologic, geologic, rock mechanics, and thermomechanical tests planned for use in an Exploratory Shaft during site characterization at the Yucca Mountain site. A second major program was fielded beginning in April 1989 to develop and test methods and equipment for surface drilling to obtain core samples from depth using only air as a circulating medium. The third major area of prototype testing has been during the ongoing development of the Instrumentation/ Data Acquisition System (IDAS), designed to collect and monitor data from down-hole instrumentation in the unsaturated zone, and store and transmit the data to a central archiving computer. Future prototype work is planned for several programs including the application of vertical seismic profiling methods and flume design to characterizing the geology at Yucca Mountain. The major objectives of this prototype testing are to assure that planned Site Characterization testing can be carried out effectively at Yucca Mountain, both in the Exploratory Shaft Facility (ESF), and from the surface, and to avoid potential major failures or delays that could result from the need to re-design testing concepts or equipment. This paper will describe the scope of the Yucca Mountain Project prototype testing programs and summarize results to date. 3 figs.

Hughes, W.T.; Girdley, W.A.

1990-08-01T23:59:59.000Z

89

Multimodal astronaut virtual training prototype  

Science Journals Connector (OSTI)

A few dedicated training simulator applications exist that mix realistic interaction devices—like real cockpits in flight simulators—with virtual environment (VE) components. Dedicated virtual reality (VR) systems have been utilized also in astronaut training. However there are no detailed descriptions of projection wall VR systems and related interaction techniques for astronaut assembly training in zero gravity conditions. Back projection technology tends to have certain advantages over head mounted displays including less simulation sickness and less restricted user movement. A prototype was built to evaluate the usefulness of projection technology \\{VEs\\} and interaction techniques for astronaut training. This was achieved by first constructing a PC cluster-based general purpose VE software and hardware platform. This platform was used to implement a testing prototype for astronaut assembly sequence training. An interaction tool battery was designed for the purposes of viewpoint control and object handling. A selected training task was implemented as a case study for further analysis based on laptop usage in the Fluid Science Laboratory (FSL) inside the Columbus module in the International Space Station (ISS). User tests were conducted on the usability of the prototype for the intended training purpose. The results seem to indicate that projection technology-based VE systems and suitably selected interaction techniques can be successfully utilized in zero gravity training operations.

Jukka Rönkkö; Jussi Markkanen; Raimo Launonen; Marinella Ferrino; Enrico Gaia; Valter Basso; Harshada Patel; Mirabelle D’Cruz; Seppo Laukkanen

2006-01-01T23:59:59.000Z

90

Prototyping tangibles: exploring form and interaction  

Science Journals Connector (OSTI)

In order to better explore the opportunities for tangible interaction in new areas such as the home or cultural heritage sites, we used multiple rapidly-developed prototypes that take advantage of existing technology. Physical prototypes allow us to ... Keywords: fast prototyping, tangible interaction, user feedback

Daniela Petrelli; Nick Dulake; Mark Marshall; Matt Willox; Fabio Caparrelli; Robin Goldberg

2014-02-01T23:59:59.000Z

91

Arduino: An Open Electronics Prototyping Platform  

E-Print Network [OSTI]

Arduino: An Open Electronics Prototyping Platform Abstract Arduino is a platform for prototyping and library for writing code to control the board. Arduino comes from a philosophy of learning by doing the Arduino prototyping platform. This paper discusses related work, the educational and design context within

Herr, Hugh

92

Characteristics of Knock in Hydrogen-Oxygen-Argon SI Engine  

SciTech Connect (OSTI)

A promising approach for improving the efficiency of internal combustion engines is to employ a working fluid with a high specific heat ratio such as the noble gas argon. Moreover, all harmful emissions are eliminated when the intake charge is composed of oxygen, nonreactive argon, and hydrogen fuel. Previous research demonstrated indicated thermal efficiencies greater than 45% at 5.5 compression ratio in engines operating with hydrogen, oxygen, and argon. However, knock limits spark advance and increasing the efficiency further. Conditions under which knock occurs in such engines differs from typical gasoline fueled engines. In-cylinder temperatures using hydrogen-oxygen-argon are higher due to the high specific heat ratio and pressures are lower because of the low compression ratio. Better understanding of knock under these conditions can lead to operating strategies that inhibit knock and allow operation closer to the knock limit. In this work we compare knock with a hydrogen, oxygen, and argon mixture to that of air-gasoline mixtures in a variable compression ratio cooperative fuels research (CFR) engine. The focus is on stability of knocking phenomena, as well as, amplitude and frequency of the resulting pressure waves.

Killingsworth, N; Rapp, V; Flowers, D; Aceves, S; Chen, J; Dibble, R

2010-02-23T23:59:59.000Z

93

Mean Life of the P23 Metastable Argon Level  

Science Journals Connector (OSTI)

Using a previously described light absorption technique, the mean life of the metastable P23 level of argon has been measured in pure argon as a function of pressure at 77°K and 300°K, and in mixtures of neon and argon at 300°K. The coefficient of diffusion of metastable argon atoms in the parent gas falls much more rapidly with decreasing temperature than the T32 dependence predicted using the hard-sphere model. The cross section for the quenching of metastable atoms by two-body collisions with normal atoms changes slightly with temperature, in a manner inconsistent with the assumption of collision-induced transitions to the radiating P13 level. As the temperature is reduced from 300°K to 77°K, the frequency of quenching by three-body collisions increases from 13.5p2 to 440p2 sec-1 (mm of Hg )2. At a given total pressure, the two-body quenching collision cross section is much reduced and the three-body quenching collisions disappear as the ratio of partial pressures of neon to argon is increased.

A. H. Futch and F. A. Grant

1956-10-15T23:59:59.000Z

94

Collection efficiency of photoelectrons injected into near- and supercritical argon gas  

SciTech Connect (OSTI)

Injection of photoelectrons into gaseous or liquid dielectrics is a widely used technique to produce cold plasmas in weakly ionized systems for investigating the transport properties of electrons. We report measurements of the collection efficiency of photoelectrons injected into dense argon gas for T= 152.7 K, close to the critical temperature T{sub c} Almost-Equal-To 150.9 K, and for T= 200.0 K. The high-field data agree with the Young-Bradbury model and with previous measurements below T{sub c} and at an intermediate temperature above T{sub c}. The effective, density-dependent electron-atom momentum transfer scattering cross section can be deduced. However, the weak-field data near T{sub c} show large deviations from the theoretical model. We show that the electron behavior at weak field is influenced by electrostriction effects that are only important near the critical point.

Borghesani, A. F. [CNISM-Unit, Department of Physics and Astronomy, University of Padua, via F. Marzolo 8, I-35131 Padua (Italy); Lamp, P. [Max-Planck-Institut fuer Physik u. Astrophysik, Munich (Germany)

2013-01-21T23:59:59.000Z

95

E-Print Network 3.0 - argon 46 Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

and hence... argon cluster, both when isolated and when surrounded by a helium carrier gas. The advantages... presence upon decay rates of an argon cluster in Secs. IV and VI...

96

E-Print Network 3.0 - argon iodides Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

2. Experimental Section All experiments were performed... of the background argon cooling gas.22 However, there is only one pathway for Nb6C7 + either with or without argon......

97

E-Print Network 3.0 - argon metastable number Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Two-dimensional laser-induced fluorescence imaging of metastable density in low-pressure radio frequency argon plasmas with added O2, Cl2, Summary: , and CF4 on the argon...

98

E-Print Network 3.0 - argon large electron Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

by minerals or "excess argon." The K-Ar dating technique was one of the earliest isotope... an absolute method such as a McLeod gauge to measure argon concentrations. The...

99

Prototype of an engineering equation of state for heterosegmented polymers  

SciTech Connect (OSTI)

The square-well fluid thermodynamics and liquid structure derived from Barker-Henderson`s perturbation theory, including a truncation correction, are used within a SAFT framework to develop a prototype of an engineering equation of state for alkane chains, referred to as SAFT1. For small n-alkanes, not only the vapor pressure and liquid density, but also the second virial coefficient, heat of vaporization, and heat capacity, are found to be more accurate. SAFT1 parameters are well behaved and hence easy to estimate reliably for high-molecular-weight alkanes and polyolefins. These parameters are found to predict cloud points in mixtures of homo- and heterosegmented molecules, such as polyolefins, without fitting.

Adidharma, H.; Radosz, M. [Louisiana State Univ., Baton Rouge, LA (United States)] [Louisiana State Univ., Baton Rouge, LA (United States)

1998-11-01T23:59:59.000Z

100

Plug-In Hybrid Electric Vehicles - Prototypes  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Prototypes Prototypes A PHEV prototype being prepared for testing. A plug-in electric vehicle (PHEV) prototype is prepared for testing at Argonne National Laboratory. What is a PHEV? A plug-in hybrid electric vehicle, or PHEV, is similar to today's hybrid electric vehicles on the market today, but with a larger battery that is charged both by the vehicle's gasoline engine and from plugging into a standard 110 V electrical outlet for a few hours each day. PHEVs and HEVs both use battery-powered motors and gasoline-powered engines for high fuel efficiency, but PHEVs can further reduce fuel usage by employing electrical energy captured through daily charging. Prototype as Rolling Test Bed As part of Argonne's multifaceted PHEV research program, Argonne researchers have constructed a PHEV prototype that serves as a rolling test

Note: This page contains sample records for the topic "liquid argon prototype" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


101

Stirling Engine Development Using Virtual Prototyping  

Science Journals Connector (OSTI)

A successful realization of Stirling engines is conditioned by its correct conceptual design ... are used for virtual prototype of 3 kW Stirling engine with Rhombic mechanism.

V. Píšt?k; P. Novotný

2012-01-01T23:59:59.000Z

102

Intial performance from the NOvA surface prototype detector  

SciTech Connect (OSTI)

NOvA, the NuMI Off-Axis {nu}{sub e} Appearance experiment, will study {nu}{sub {mu}} {yields} {nu}{sub e} oscillations characterized by the mixing angle {Theta}{sub 13}. Provided {Theta}{sub 13} is large enough, NOvA may ultimately determine the ordering of the neutrino masses and measure CP violation in neutrino oscillations. A complementary pair of detectors will be constructed {approx}14 mrad off beam axis to optimize the energy profile of the neutrinos. This system consists of a surface based 14 kTon liquid scintillator tracking volume located 810 km from the main injector source (NuMI) in Ash River, Minnesota and a smaller underground 222 Ton near detector at the Fermilab. The first neutrino signals at the Ash River Site are expected prior to the 2012 accelerator shutdown. In the meantime, a near detector surface prototype has been completed and neutrinos from two Fermilab sources have been observed using the same highly segmented PVC and liquid scintillator detector system that will be deployed in the full scale experiment. Design and initial performance characteristics of this prototype system are being fed back into the design for the full NOvA program.

Muether, M.; /Fermilab; ,

2011-09-01T23:59:59.000Z

103

First Commissioning of a Cryogenic Distillation Column for Low Radioactivity Underground Argon  

E-Print Network [OSTI]

We report on the performance and commissioning of a cryogenic distillation column for low radioactivity underground argon at Fermi National Accelerator Laboratory. The distillation column is designed to accept a mixture of argon, helium, and nitrogen and return pure argon with a nitrogen contamination less than 10 ppm. In the first commissioning, we were able to run the distillation column in a continuous mode and produce argon that is 99.9% pure. After running in a batch mode, the argon purity was increased to 99.95%, with 500 ppm of nitrogen remaining. The efficiency of collecting the argon from the gas mixture was between 70% and 81%, at an argon production rate of 0.84-0.98 kg/day.

H. O. Back; T. Alexander; A. Alton; C. Condon; E. de Haas; C. Galbiati; A. Goretti; T. Hohmann; An. Ianni; C. Kendziora; B. Loer; D. Montanari; P. Mosteiro; S. Pordes

2012-04-26T23:59:59.000Z

104

Clean Energy Manufacturing Resources - Technology Prototyping | Department  

Broader source: Energy.gov (indexed) [DOE]

Guide Home » Clean Energy Manufacturing Resources - Technology Guide Home » Clean Energy Manufacturing Resources - Technology Prototyping Clean Energy Manufacturing Resources - Technology Prototyping Clean Energy Manufacturing Resources - Technology Prototyping Find resources to help you design and refine a prototype of a new clean energy technology or product. For prototyping, areas to consider include materials characterization; models and tools; intellectual property protection; small-scale production; R&D funding; and regional, state, and local resources. For more resources, see the Clean Energy Manufacturing Federal Resource Guide. Characterize Materials Shared Research Equipment User Facility - a facility at Oak Ridge National Laboratory that provides access to advanced instruments and scientists for the scale characterization of materials.

105

Solubility of water in compressed nitrogen, argon, and methane  

Science Journals Connector (OSTI)

Solubility of water in compressed nitrogen, argon, and methane ... The accurate determination of water content in hydrocarbons is critical for the petroleum and natural gas industries due to corrosion and ... ... Predicting the Phase Equilibria, Critical Phenomena, and Mixing Enthalpies of Binary Aqueous Systems Containing Alkanes, Cycloalkanes, Aromatics, Alkenes, and Gases (N2, CO2, H2S, H2) with the PPR78 Equation of State ...

Maurice Rigby; John M. Prausnitz

1968-01-01T23:59:59.000Z

106

Cold collisions between argon atoms and hydrogen molecules  

Science Journals Connector (OSTI)

Collisions between argon atoms and hydrogen molecules are investigated at very low temperatures. Quantum-mechanical calculations are performed using two different potential-energy surfaces. Rate coefficients for all possible combinations of initial vibrational and rotational level have been computed in the limit of zero temperature. Resonant and quasiresonant behavior is found using both potential-energy surfaces. The results are interpreted and estimates are made of the reliability of the calculations.

J. C. Flasher and R. C. Forrey

2002-02-13T23:59:59.000Z

107

Deuteron spin-lattice relaxation for HD in solid argon  

Science Journals Connector (OSTI)

Measurements, using 55-MHz deuteron magnetic resonance (DMR), are reported of deuteron spin-lattice relaxation times for HD in solid argon at concentrations of 300–1100 ppm over the temperature range of 10–70 K. The relaxation times increase rapidly, from 10 to 4000 sec, as the temperature is reduced and are independent of the sample’s para-D2 concentration. Comparisons of deuteron spin-lattice relaxation times for HD in solid argon are made with previously reported relaxation times for solid HD–n-D2 mixtures and for ortho-H2 and para-D2 in solid argon. The very different relaxation behavior for HD can be understood because it is an asymmetric molecule. The lack of exchange symmetry results in an increasing probability of the molecule being in a J=0 rotational state as the temperature is reduced. Nuclear spin-lattice relaxation in HD arises from phonon-induced ?mJ transitions for those molecules in the J=1 states. A theory is presented to calculate the nuclear spin-lattice relaxation rate (1/T1) in terms of a molecular decay rate (?) that arises from ?mJ or ?J transitions. The decay rate ? as a function of temperature is determined from the relaxation data. It is found that the asymmetric rotor HD molecules have a coupling to the lattice phonons that is much stronger than for ortho-H2 and para-D2.

Joseph Ganem; Peter A. Fedders; R. E. Norberg

1993-02-01T23:59:59.000Z

108

Norcal Prototype LNG Truck Fleet: Final Results  

SciTech Connect (OSTI)

U.S. DOE and National Renewable Energy Laboratory evaluated Norcal Waste Systems liquefied natural gas (LNG) waste transfer trucks. Trucks had prototype Cummins Westport ISXG engines. Report gives final evaluation results.

Not Available

2004-07-01T23:59:59.000Z

109

A Prototype for Graphene Material Simulation: Structures and...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Prototype for Graphene Material Simulation: Structures and Interaction Potentials ofCoronene Dimers. A Prototype for Graphene Material Simulation: Structures and Interaction...

110

Characterization of Prototype LSST CCDs  

SciTech Connect (OSTI)

The ambitious science goals of the Large Synoptic Survey Telescope (LSST) will be achieved in part by a wide-field imager that will achieve a new level of performance in terms of area, speed, and sensitivity. The instrument performance is dominated by the focal plane sensors, which are now in development. These new-generation sensors will make use of advanced semiconductor technology and will be complemented by a highly integrated electronics package located inside the cryostat. A test laboratory has been set up at Brookhaven National Laboratory (BNL) to characterize prototype sensors and to develop test and assembly techniques for eventual integration of production sensors and electronics into modules that will form the final focal plane. As described in [1], the key requirements for LSST sensors are wideband quantum efficiency (QE) extending beyond lpm in the red, control of point spread function (PSF), and fast readout using multiple amplifiers per chip operated in parallel. In addition, LSST's fast optical system (f71.25) places severe constraints on focal plane flatness. At the chip level this involves packaging techniques to minimize warpage of the silicon die, and at the mosaic level careful assembly and metrology to achieve a high coplanarity of the sensor tiles. In view of the long lead time to develop the needed sensor technology, LSST undertook a study program with several vendors to fabricate and test devices which address the most critical performance features [2]. The remainder of this paper presents key results of this study program. Section 2 summarizes the sensor requirements and the results of design optimization studies, and Section 3 presents the sensor development plan. In Section 4 we describe the test bench at BNL. Section 5 reports measurement results obtained to date oh devices fabricated by several vendors. Section 6 presents a summary of the paper and an outlook for the future work. We present characterization methods and results on a number of new devices produced specifically to address LSST's performance goals, including flatness, QE, PSF, dark current, read noise, CTE, cosmetics, and crosstalk. The results indicate that commercially produced, thick n-channel over-depleted CCDs with excellent red response can achieve tight PSF at moderate applied substrate bias with no evidence of persistent image artifacts. We will also report ongoing studies of mosaic assembly techniques to achieve chip-to-chip co-planarity, high fill factor, and thermal stability.

OCONNOR,P.; FRANK, J.; GEARY, J.C.; GILMORE, D.K.; KOTOV, I.; RADEKA, V.; TAKACS, P.; TYSON, J.A.

2008-06-23T23:59:59.000Z

111

Test of two prototype high-temperature superconducting transmission cables  

SciTech Connect (OSTI)

Two 500-A class prototype high-temperature superconducting cables have been constructed by Southwire Company and tested at Oak Ridge National Laboratory (ORNL). In the first cable, no insulation was used to separate the individual HTS tapes. In the second cable, Kapton tape was used to insulate the HTS tapes between successive layers for the study of AC loss and current distribution. The cables were tested with both DC and AC currents in liquid nitrogen from 77 to 69 K. Both cables achieved DC critical current, I{sub c} greater than 500 A. A calorimetric technique that measures the cable temperature rise under ac currents was used to measure the ac loss of the cables. The un-insulated cable showed a cryoresistive behavior under the 60 Hz AC currents. The insulated cable started to show measurable loss at current where there was corresponding resistive loss.

Lue, J.W.; Lubell, M.S.; Kroeger, D.M.; Martin, P.M. [Oak Ridge National Lab., TN (United States); Demko, J.A.; Jones, E.C. [Oak Ridge Associated Universities, Inc., TN (United States); Sinha, U.; Hughey, R.L. [Southwire Co., Carrollton, GA (United States)

1996-10-01T23:59:59.000Z

112

Prototype spent-fuel canister design, analysis, and test  

SciTech Connect (OSTI)

Sandia National Laboratories was asked by the US Energy Research and Development Administration (now US Department of Energy) to design the spent fuel shipping cask system for the Clinch River Breeder Reactor Plant (CRBRP). As a part of this task, a canister which holds liquid sodium and the spent fuel assembly was designed, analyzed, and tested. The canister body survived the regulatory Type-B 9.1-m (30-ft) drop test with no apparent leakage. However, the commercially available metal seal used in this design leaked after the tests. This report describes the design approach, analysis, and prototype canister testing. Recommended work for completing the design, when funding is available, is included.

Leisher, W.B.; Eakes, R.G.; Duffey, T.A.

1982-03-01T23:59:59.000Z

113

Distillation purification and radon assay of liquid xenon  

SciTech Connect (OSTI)

We succeeded to reduce the Kr contamination in liquid xenon by a factor of 1/1000 with a distillation system in Kamioka mine. Then, the remaining radioactivities (Radon and Kr) in purified liquid xenon were measured with the XMASS prototype detector. In this talk, the distillation system and the remaining internal radioactivity levels are reported.

Takeuchi, Yasuo [Kamioka Observatory, ICRR, Univ. of Tokyo, Kamioka-cho, Hida-shi, Gifu 506-1205 (Japan)

2005-09-08T23:59:59.000Z

114

E-Print Network 3.0 - argon ions Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Polytechnique, Centre de mathmatiques Collection: Mathematics 3 Submitted to Nuclear Fusion as a contributed Letter. June 27, 2001 Summary: related to the argon ion flux,...

115

464 C4H8ArS Tetrahydrothiophene - argon (1/1)  

Science Journals Connector (OSTI)

It contains molecular constants (high-resolution spectroscopic data) of C4H8ArS Tetrahydrothiophene - argon (1/1)

J. Demaison

2011-01-01T23:59:59.000Z

116

E-Print Network 3.0 - argon 42 Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Diego Collection: Plasma Physics and Fusion 13 Ambient gas effects on the dynamics of laser-produced tin plume expansion Summary: ambient argon pressure for decelerating various...

117

E-Print Network 3.0 - argon 44 Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Collection: Plasma Physics and Fusion 10 Ambient gas effects on the dynamics of laser-produced tin plume expansion Summary: ambient argon pressure for decelerating various...

118

E-Print Network 3.0 - argon 32 Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

from thefrrst4s-levelmanifold. The plasma... is created by focusing a pulsed YAG laser in argon at variable pressure, typically in the atmospheric range Source: Ecole...

119

E-Print Network 3.0 - argon 37 Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Diego Collection: Plasma Physics and Fusion 11 Ambient gas effects on the dynamics of laser-produced tin plume expansion Summary: ambient argon pressure for decelerating various...

120

E-Print Network 3.0 - argon complexes Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Diego Collection: Plasma Physics and Fusion 10 Ambient gas effects on the dynamics of laser-produced tin plume expansion Summary: ambient argon pressure for decelerating various...

Note: This page contains sample records for the topic "liquid argon prototype" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


121

E-Print Network 3.0 - argon 41 Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Diego Collection: Plasma Physics and Fusion 13 Ambient gas effects on the dynamics of laser-produced tin plume expansion Summary: ambient argon pressure for decelerating various...

122

E-Print Network 3.0 - argon 35 Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

cluster center of mass is fixed. Unary clusters of two species (Argon and Krypton Source: Hale, Barbara N. - Department of Physics, University of Missouri-Rolla Collection: Physics...

123

E-Print Network 3.0 - argon 33 Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

is considerably lower than the calculated parallel temperature of the argon carrier gas. We have... . I. INTRODUCTION We have observed an unexpected cooling effect in an...

124

E-Print Network 3.0 - argon 49 Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

University of California at San Diego Collection: Plasma Physics and Fusion 13 Ambient gas effects on the dynamics of laser-produced tin plume expansion Summary: ambient argon...

125

E-Print Network 3.0 - argon 47 Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

; Physics 96 Microscopic simulations of molecular cluster decay: Does the carrier gas affect evaporation? Summary: simulations on a 50-atom argon cluster to determine the...

126

E-Print Network 3.0 - argon 34 Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

is considerably lower than the calculated parallel temperature of the argon carrier gas. We have... . I. INTRODUCTION We have observed an unexpected cooling effect in an...

127

Kinetic modeling of the Townsend breakdown in argon  

SciTech Connect (OSTI)

Kinetic modeling of the Townsend breakdown in argon was performed in the “forward-back” approximation. The kinetic model was found to adequately describe the left branch of the Paschen curve, and the important role of ionization by fast ions and atoms near the cathode, as well as the increase in secondary emission coefficient in strong electric fields described in the literature, was confirmed. The modeling also showed that the electron energy distribution function develops a beam of high-energy electrons and that the runaway effect, i.e., the monotonic increase of the mean electron energy with the distance from the cathode, occurs at the left branch of the Paschen curve.

Macheret, S. O.; Shneider, M. N. [Department of Mechanical and Aerospace Engineering, Princeton University, D-414 Engineering Quadrangle, Princeton, New Jersey 08544 (United States)] [Department of Mechanical and Aerospace Engineering, Princeton University, D-414 Engineering Quadrangle, Princeton, New Jersey 08544 (United States)

2013-10-15T23:59:59.000Z

128

Prototalk : an Environment for Teaching, Understanding, Designing and Prototyping  

E-Print Network [OSTI]

With prototype-based languages, concretization and abstraction are unified into a single concept a prototype into several variations. In the first age of prototype-based languages, research languages such as Self [3 compact language with NewtonScript's double inheritance [23], Pic% [24] a new prototype language

Paris-Sud XI, Université de

129

Alexandria Digital Earth ProtoType The Alexandria Digital Earth  

E-Print Network [OSTI]

Alexandria Digital Earth ProtoType The Alexandria Digital Earth Prototype System Terence Smith Greg Janée James Frew Anita Coleman #12;Alexandria Digital Earth ProtoType 2Smith et al. / JCDL 2001 / 2x Earth ProtoType 3Smith et al. / JCDL 2001 / 2x-Jun-2001 Core System (inherited from ADL) Components

Janée, Greg

130

Rapid prototyping is coming of age  

SciTech Connect (OSTI)

This article examines how, by accelerating the design process and speeding tooling development, rapid prototyping technology helps manufacturers cut new product cycle times and costs. During the last decade, a class of technologies has emerged by which a computer-aided design file of an object can be converted into a physical model through special sintering, layering, or deposition techniques. Called rapid prototyping (RP), or solid free-form fabrication, the major application for this technology has been early verification of product designs and quick production of prototypes for testing. Multiple prototypes can now be reproduced more economically by using the RP master as a pattern for creating molded or soft tooling. Interest in desktop (or more accurately, office) rapid prototyping for visualization and design verification is growing, but it is not yet easy to cost-justify. Recently, the fabrication of patterns for limited-run production tooling has become more common. Today, the most popular rapid tooling options are silicone rubber (RTV) molding and epoxy and spray metal tooling. For metal part production, the choices are investment, plaster, spin, and sand casting.

Ashley, S.

1995-07-01T23:59:59.000Z

131

EVALUATION OF A PROTOTYPE SOLAR AWNING A prototype solar awning has been designed and installed on  

E-Print Network [OSTI]

and installed on a University of Oregon campus building. The solar awning is composed of a light shelfEVALUATION OF A PROTOTYPE SOLAR AWNING ABSTRACT A prototype solar awning has been designed with photovoltaic modules at- tached tilted 20° to the south. An interior light shelf and LED lights have been

Oregon, University of

132

TransportToolkit Prototype | Open Energy Information  

Open Energy Info (EERE)

TransportToolkit Prototype TransportToolkit Prototype Jump to: navigation, search Tool Summary Name: TransportToolkit Prototype Agency/Company /Organization: Nick Langle Complexity/Ease of Use: Not Available Cost: Free Related Tools Journal of Public Transportation Handbook for Handling, Storing, and Dispensing E85 Finalize Historic National Program to Reduce Greenhouse Gases and Improve Fuel Economy for Cars and Trucks ... further results Find Another Tool FIND TRANSPORTATION TOOLS This is a test tool to set values needed for Exhibit search results When to Use This Tool While building a low emission strategy for your country's transportation system, this tool is most useful during these key phases of the process: Evaluate System - Assessing the current transportation situation Create Baseline - Developing a business-as-usual scenario

133

Adsorption of the first layer of argon on graphite (*) Laboratoire des Composs non St0153chiomtriques,  

E-Print Network [OSTI]

]. The cooling bath is solid nitrogen obtained by pumping. The adsorption cell, enclosed in an aluminium blockL-9 Adsorption of the first layer of argon on graphite (*) F. Millot Laboratoire des Composés non déterminé des isothermes d'adsorption d'argon sur le graphite entre 55 et 62 K. Nous proposons une

Boyer, Edmond

134

Influence of dissociative recombination on the LTE of argon high-frequency plasmas at atmospheric pressure  

E-Print Network [OSTI]

) model that we developed for an argon microwave (2.45 GHz) plasma at atmospheric pressure. This model-1- Influence of dissociative recombination on the LTE of argon high-frequency plasmas at atmospheric pressure A. Sáinz1 , J. Margot2 , M. C. García1 , M. D. Calzada1 1 Grupo de Espectroscopía de

Boyer, Edmond

135

INTERNATIONAL CONGRESS OF THE AERONAUTICAL SCIENCES Hypersonic flows of argon, nitrogen, oxygen,  

E-Print Network [OSTI]

, nitrogen, oxygen, and carbon dioxide near a toroidal ballute have been investigated numerically using of nitrogen, dissociating oxygen, argon, and carbon dioxide at 8R H 2R and the Knudsen number Kn D from 02G code [12]. Collisions in nitrogen, argon, oxygen, and carbon dioxide are modeled using

Riabov, Vladimir V.

136

E-Print Network 3.0 - argon plasma column Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

surface wave produced plasma column obtained at 40 mtorr of argon in a 25 mm i.d. pyrex tube... shows the plasma column obtained at 40 mtorr of argon in a 25 mm i.d. tube with 80 W...

137

LAPP-EXP-2007-05 The Atlas Liquid Argon Calorimeter  

E-Print Network [OSTI]

on the surface and in the cavern, and the results of the combined test beam in 2004 are also shown. 1 in the AT- LAS cavern. Since autumn 2006, a cosmic run based on the EM barrel together with some hadronic is presented. Finally, we show some results of the calorimeter commissioning on the surface and in the cavern

Paris-Sud XI, Université de

138

Research and Development for Massive Liquid Argon TPCs (LArTPC) for  

E-Print Network [OSTI]

University of California at Los Angeles, Los Angelas, CA 3 Yale University, New Haven, CT 4 Fermi National and solar neutrino experiments, as confirmed in the K2K accelerator neutrino experiment and the Kamland tank of 1-3-kton capacity using the same techniques as proposed for the 15-100-kton detectors

McDonald, Kirk

139

Prototype bucket foundation for wind turbines  

E-Print Network [OSTI]

Prototype bucket foundation for wind turbines -natural frequency estimation Lars Bo Ibsen Morten bucket foundation for wind turbines -natural frequency estimation by Lars Bo Ibsen Morten Liingaard foundation for wind turbines--natural frequency estimation" is divided into four numbered sections

140

Fuzzy prototype model and semantic distance  

Science Journals Connector (OSTI)

It is a challenge to provide an intelligent product suggestion for these new customers without previous shopping records in the supermarket application. To solve such a problem, we design a hybrid fuzzy expert system for recommendation using the improved ... Keywords: Fuzzy c means, Fuzzy decision tree, Fuzzy prototype, Recommendation system, Semantic coordinate, Semantic distance

Dong (Walter) Xie; Jim F. Baldwin

2007-11-01T23:59:59.000Z

Note: This page contains sample records for the topic "liquid argon prototype" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


141

Future Internet Infrastructures for FI Prototyping  

E-Print Network [OSTI]

++ Fraunhofer Institute FOKUS, Berlin ++ www.fokus.fraunhofer.de/go/innovation ++ 11­2009 #12;Future Internet Berlin AV de- partment (Architektur für Vermittlungskno- ten). Part of the Fraunhofer innovation clusFuture Internet Infrastructures for FI Prototyping NGN Evolution toward Future Internet Fraunhofer

Wichmann, Felix

142

Development of a prototype lignin concentration sensor  

SciTech Connect (OSTI)

The US Department of Energy, Office of Industrial Technologies, is sponsoring a research and development program for the development of a real-time, in-situ sensor to measure the concentration of lignin in wood pulp. The program is composed of phase I showing feasibility which is now complete, phase II for development and testing of a Field Prototype, in progress, Phase III commercialization. Phase I work (funded entirely by B&W) demonstrated a correlation between the fluorescence intensity and lignin concentration (as measured by TAPPI procedure, T 236 hm-85 Kappa Number of Pulp) for undiluted wood pulp samples. In Phase II, a laboratory test program directed at characterizing the fluorescence of wood pulp has been conducted as a prelude to the design of a prototype sensor. The current report summarizes the testing completed in Phase I and documents the Phase II laboratory testing completed through December 1991. Future Phase II efforts include additional laboratory testing, design and fabrication of a prototype sensor, and field testing of the prototype sensor. Phase III of the program will concentrate on the incorporation of the sensor into a control system and commercialization of the sensor.

Malito, M.L.; Jeffers, L.A.

1993-01-01T23:59:59.000Z

143

Development of a prototype lignin concentration sensor  

SciTech Connect (OSTI)

The US Department of Energy, Office of Industrial Technologies, is sponsoring a research and development program for the development of a real-time, in-situ sensor to measure the concentration of lignin in wood pulp. The program is composed of phase I showing feasibility which is now complete, phase II for development and testing of a Field Prototype, in progress, Phase III commercialization. Phase I work (funded entirely by B W) demonstrated a correlation between the fluorescence intensity and lignin concentration (as measured by TAPPI procedure, T 236 hm-85 Kappa Number of Pulp) for undiluted wood pulp samples. In Phase II, a laboratory test program directed at characterizing the fluorescence of wood pulp has been conducted as a prelude to the design of a prototype sensor. The current report summarizes the testing completed in Phase I and documents the Phase II laboratory testing completed through December 1991. Future Phase II efforts include additional laboratory testing, design and fabrication of a prototype sensor, and field testing of the prototype sensor. Phase III of the program will concentrate on the incorporation of the sensor into a control system and commercialization of the sensor.

Malito, M.L.; Jeffers, L.A.

1993-01-01T23:59:59.000Z

144

Nested Autonomy Prototype for Distributed Undersea Sensing  

E-Print Network [OSTI]

MOOS-IvP Nested Autonomy Prototype for Distributed Undersea Sensing User's Guide H. Schmidt, M Autonomous Network Architecture, based on the Nested Autonomy paradigm, as implemented and operated Nested Autonomy Paradigm for Distributed Undersea Sensing 11 2 Autonomy in Communication

Schmidt, Henrik

145

Deep-Sea Research I 51 (2004) 15171528 The solubility of neon, nitrogen and argon in distilled water  

E-Print Network [OSTI]

of these gases. We present new solubility measurements for neon, nitrogen and argon in distilled water reserved. Keywords: Gas solubility; Saturation; Neon; Nitrogen; Argon; Inert gases 1. IntroductionDeep-Sea Research I 51 (2004) 1517­1528 The solubility of neon, nitrogen and argon in distilled

Emerson, Steven R.

146

Carbon dioxide, argon, nitrogen and methane clathrate hydrates:1 thermodynamic modelling, investigation of their stability in Martian2  

E-Print Network [OSTI]

1 Carbon dioxide, argon, nitrogen and methane clathrate hydrates:1 thermodynamic modelling-4Dec2012 #12;3 Keywords: Mars, clathrate hydrate, nitrogen, carbon dioxide, argon, methane, equilibrium and allows to simulating a Martian gas, CO2 dominated (95.3%) plus nitrogen6 (2.7%) and argon (2

Paris-Sud XI, Université de

147

High speed shadowgraphy for the study of liquid drops  

E-Print Network [OSTI]

the separation and size of the electrodes and the surrounding medium. Many of the commercially available systems use argon gas, and produce pulse durations of the order of 5 to 20 ns, 9 to 25 mJ of electric flash ener- gy, and utilize 3- 5 kV power supplies... Sciences Ltd A-series single nozzle CIJ printer with a re- ported nozzle diameter of 60 µm. Essentially, in CIJ mode the liquid is pumped continuously into the head, generating an internal pressure which drives the liquid through the nozzle and creates a...

Castrejon-Pita, J.R.; Castrejon-Garcia, R.; Hutchings, I.M.

2012-01-01T23:59:59.000Z

148

Room-temperature atmospheric argon plasma jet sustained with submicrosecond high-voltage pulses  

SciTech Connect (OSTI)

In this letter, an experimental study is presented to characterize a room-temperature plasma jet in atmospheric argon generated with submicrosecond voltage pulses at 4 kHz. Distinct from sinusoidally produced argon discharges that are prone to thermal runaway instabilities, the pulsed atmospheric argon plasma jet is stable and cold with an electron density 3.9 times greater than that in a comparable sinusoidal jet. Its optical emission is also much stronger. Electrical measurement suggests that the discharge event is preceded with a prebreakdown phase and its plasma stability is facilitated by the short voltage pulses.

Walsh, J. L.; Kong, M. G. [Department of Electronic and Electrical Engineering, Loughborough University, Loughborough, Leicestershire LE11 3TU (United Kingdom)

2007-11-26T23:59:59.000Z

149

Prototypical Consolidation Demonstration Project: Final report  

SciTech Connect (OSTI)

This is the final report of the Prototypical Consolidation Demonstration Project, which was funded by the US Department of Energy`s Office of Civilian Radioactive Waste Management. The project had two objectives: (a) to develop and demonstrate a prototype of production-scale equipment for the dry, horizontal consolidation and packaging of spent nuclear fuel rods from commercial boiling water reactor and pressurized water reactor fuel assemblies, and (b) to report the development and demonstration results to the US Department of Energy, Idaho Operations Office. This report summarizes the activities and conclusions of the project management contractor, EG&G Idaho, Inc., and the fabrication and testing contractor, NUS Corporation (NUS). The report also presents EG&G Idaho`s assessments of the equipment and procedures developed by NUS.

Gili, J.A.; Poston, V.K.

1993-11-01T23:59:59.000Z

150

Compression of Polymer-Coated Laser-Fusion Targets to Ten Times Liquid DT Density  

Science Journals Connector (OSTI)

Polymer-coated glass microspheres filled with DT fuel and argon seed gas were irradiated with the SHIVA 1.06-?m laser using 4-kJ, 200-ps (full width at half maximum), Gaussian pulses. Measured light absorption, x-ray spectrum, neutron yields, and x-ray continuum images compared favorably with detailed computer simulations. Pusher neutron activation and argon line imaging diagnostics were utilized to measure fuel density. Fuel densities of 1-3 g/cm3 or 5-15 times liquid DT density were inferred.

J. M. Auerbach, W. C. Mead, E. M. Campbell, D. L. Matthews, D. S. Bailey, C. W. Hatcher, L. N. Koppel, S. M. Lane, P. H. Y. Lee, K. R. Manes, G. McClellan, D. W. Phillion, R. H. Price, V. C. Rupert, V. W. Slivinsky, and C. D. Swift

1980-06-23T23:59:59.000Z

151

EMSL - liquids  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

liquids en Iodine Solubility in Low-Activity Waste Borosilicate Glass at 1000 °C. http:www.emsl.pnl.govemslwebpublicationsiodine-solubility-low-activity-waste-borosilicate...

152

Mechanical Measurements of the ALMA Prototype Antennas  

E-Print Network [OSTI]

The specifications of the Atacama Large Millimeter Array (ALMA) have placed stringent requirements on the mechanical performance of its antennas. As part of the evaluation process of the VertexRSI and Alcatel EIE Consortium (AEC) ALMA prototype antennas, measurements of the path length, thermal, and azimuth bearing performance were made under a variety of weather conditions and observing modes. The results of mechanical measurements, reported here, are compared to the antenna specifications.

A. Greve; J. G. Mangum

2007-10-30T23:59:59.000Z

153

Prototalk : an Environment for Teaching, Understanding, Designing and Prototyping  

E-Print Network [OSTI]

With prototype-based languages, concretization and abstraction are unified into a single concept a prototype into several variations. In the first age of prototype-based languages, research languages such as Self [3-client programming language [21] [22]. More recently IO, a new and extremely compact language with Newton

Ducasse, Stéphane

154

Midas: fabricating custom capacitive touch sensors to prototype interactive objects  

Science Journals Connector (OSTI)

An increasing number of consumer products include user interfaces that rely on touch input. While digital fabrication techniques such as 3D printing make it easier to prototype the shape of custom devices, adding interactivity to such prototypes remains ... Keywords: capacitive touch sensing, design tools, fabrication, prototyping

Valkyrie Savage; Xiaohan Zhang; Björn Hartmann

2012-10-01T23:59:59.000Z

155

An Optimization and Assessment on DG adoption in Japanese Prototype Buildings  

E-Print Network [OSTI]

five prototype commercial buildings and uses D E R - C A Min Japanese Prototype Buildings Nan Zhou, Chris Marnay, Ryanin Japanese Prototype Buildings Nan Zhou , Chris Marnay ,

Zhou, Nan; Marnay, Chris; Firestone, Ryan; Gao, Weijun; Nishida, Masaru

2005-01-01T23:59:59.000Z

156

Pressure dependence of the solubility of nitrogen, argon, krypton, and xenon in water  

Science Journals Connector (OSTI)

Measurements are reported for the pressure dependence of the Ostwald L and mole?fraction x 2solubilities for nitrogen argon krypton and xenon in water at 25.0?°C. The approximate pressure ranges were: N2 44–116 atm; Ar 22–101 atm; Kr 33–81 atm; and Xe 5–48 atm. Our experimental technique is a modified Van Slyke method which allows the simultaneous determination of L x 2 and partial molar volume v 2 of the solute gas in the solvent. For N2 Ar and Kr we observe deviations from Henry’s Law f 2=k H x 2 which vary linearly with pressure. For example the measured values of Henry’s constant range from k H (25?°C 44.6 atm)=90?269 atm to k H (25?°C 115.8 atm)=100?340 atm for N2 in water. Extrapolation of the data to low pressure yields results for L and x 2 which agree with literature values. For Xe we observe a sharp increase in Henry’s constant at pressures above 20 atm. The measured partial molar volume also changes sharply from 47 to ?125 cm3/mol. This is attributed to the observed onset of ice?like clathrates at pressures above 20 atm. The solubility data are analyzed in terms of the Kirkwood–Buff solution theory and the role of hydrophobic interactions is discussed. For the Kr–water system we compare the experimental results to recent computer simulations. We also use statistical mechanics arguments to introduce a new solubility parameter which is useful in understanding high?pressure measurements. We conclude by discussing extensions of this work to other gas–liquid systems.

Richard P. Kennan; Gerald L. Pollack

1990-01-01T23:59:59.000Z

157

Discharge characteristics of atmospheric-pressure radio-frequency glow discharges with argon/nitrogen  

SciTech Connect (OSTI)

In this letter, atmospheric-pressure glow discharges in {gamma} mode with argon/nitrogen as the plasma-forming gas using water-cooled, bare copper electrodes driven by radio-frequency power supply at 13.56 MHz are achieved. The preliminary studies on the discharge characteristics show that, induced by the {alpha}-{gamma} coexisting mode or {gamma} mode discharge of argon, argon-nitrogen mixture with any mixing ratios, even pure nitrogen, can be employed to generate the stable {gamma} mode radio-frequency, atmospheric-pressure glow discharges and the discharge voltage rises with increasing the fraction of nitrogen in the argon-nitrogen mixture for a constant total gas flow rate.

Wang Huabo; Sun Wenting; Li Heping; Bao Chengyu; Gao Xing; Luo Huiying [Department of Engineering Physics, Tsinghua University, Beijing 100084 (China); School of Public Health and Family Medicine, Capital University of Medical Sciences, Beijing 100069 (China); Beijing Center for Diseases Control and Prevention, Beijing 100013 (China)

2006-10-16T23:59:59.000Z

158

Influence of oxygen traces on an atmospheric-pressure radio-frequency capacitive argon plasma discharge  

Science Journals Connector (OSTI)

An atmospheric-pressure capacitive discharge source driven by radio-frequency power supply at 13.56 MHz has been developed experimentally that is capable of producing a homogeneous and cold glow discharge in O2/Ar. With respect to the influence of oxygen component when diluted into argon plasmadischarge on the dischargecharacteristics the measurements of the electrical parameters (impedance phase angle resistance and reactance) are made systematically and the densities of the metastable and resonant state of argon are determined by means of optical emission spectroscopy(OES). It is shown that the admixture of oxygen into argon plasma not only changes the electric characteristics but also alters the optical emission spectra greatly due to strong interaction between the oxygen content and the argon in the plasma environment.

Shou-Zhe Li; Qi Wu; Wen Yan; Dezhen Wang; Han S. Uhm

2011-01-01T23:59:59.000Z

159

E-Print Network 3.0 - argon 36 target Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

(d 2 cm) within delays of t 10 s after... F- laser ablation of silicon into flowing argon gas at 1 Torr. Within t 20 s, collisions... to reflect from the target surface at t 300 s...

160

E-Print Network 3.0 - argon 52 Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

electric field, E. In the solution of the equation no expansion... mixtures (with a gas density N) of methane and argon subjected to an external constant electric field E...

Note: This page contains sample records for the topic "liquid argon prototype" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


161

E-Print Network 3.0 - argon 51 Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

electric field, E. In the solution of the equation no expansion... mixtures (with a gas density N) of methane and argon subjected to an external constant electric field E...

162

E-Print Network 3.0 - argon 53 Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

electric field, E. In the solution of the equation no expansion... mixtures (with a gas density N) of methane and argon subjected to an external constant electric field E...

163

E-Print Network 3.0 - argon 31 Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

electric field, E. In the solution of the equation no expansion... mixtures (with a gas density N) of methane and argon subjected to an external constant electric field E...

164

Comparison of Small Cluster Effects in Argon Lennard-Jones Nucleation  

E-Print Network [OSTI]

Comparison of Small Cluster Effects in Argon Lennard-Jones Nucleation Barbara Hale and Gerald of volume, V, with each cluster size constituting an ideal gas species. The law of mass action for a dilute

Hale, Barbara N.

165

E-Print Network 3.0 - argon 36 Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

electric field, E. In the solution of the equation no expansion... mixtures (with a gas density N) of methane and argon subjected to an external constant electric field E...

166

E-Print Network 3.0 - argon laser vascular Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

LIBRARY AT UTSI CONTACT Wes McMinn AT EXT 313 Summary: . Handling Oxygen Safely by Praxair (11:40 minutes). 3. Using Nitrogen and Argon Safely by Linde (23... :30 minutes) 4....

167

E-Print Network 3.0 - argon reactions cross Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

LIBRARY AT UTSI CONTACT Wes McMinn AT EXT 313 Summary: . Handling Oxygen Safely by Praxair (11:40 minutes). 3. Using Nitrogen and Argon Safely by Linde (23... :30 minutes) 4....

168

E-Print Network 3.0 - argon laser treatment Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

LIBRARY AT UTSI CONTACT Wes McMinn AT EXT 313 Summary: . Handling Oxygen Safely by Praxair (11:40 minutes). 3. Using Nitrogen and Argon Safely by Linde (23... :30 minutes) 4....

169

E-Print Network 3.0 - argon 40 Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

LIBRARY AT UTSI CONTACT Wes McMinn AT EXT 313 Summary: . Handling Oxygen Safely by Praxair (11:40 minutes). 3. Using Nitrogen and Argon Safely by Linde (23... :30 minutes) 4....

170

E-Print Network 3.0 - argon laser iridotomy Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

LIBRARY AT UTSI CONTACT Wes McMinn AT EXT 313 Summary: . Handling Oxygen Safely by Praxair (11:40 minutes). 3. Using Nitrogen and Argon Safely by Linde (23... :30 minutes) 4....

171

E-Print Network 3.0 - argon laser peripheral Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

LIBRARY AT UTSI CONTACT Wes McMinn AT EXT 313 Summary: . Handling Oxygen Safely by Praxair (11:40 minutes). 3. Using Nitrogen and Argon Safely by Linde (23... :30 minutes) 4....

172

E-Print Network 3.0 - argon laser stimulation Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

LIBRARY AT UTSI CONTACT Wes McMinn AT EXT 313 Summary: . Handling Oxygen Safely by Praxair (11:40 minutes). 3. Using Nitrogen and Argon Safely by Linde (23... :30 minutes) 4....

173

E-Print Network 3.0 - argon laser phototherapy Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

LIBRARY AT UTSI CONTACT Wes McMinn AT EXT 313 Summary: . Handling Oxygen Safely by Praxair (11:40 minutes). 3. Using Nitrogen and Argon Safely by Linde (23... :30 minutes) 4....

174

E-Print Network 3.0 - argon laser trabeculoplasty Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

LIBRARY AT UTSI CONTACT Wes McMinn AT EXT 313 Summary: . Handling Oxygen Safely by Praxair (11:40 minutes). 3. Using Nitrogen and Argon Safely by Linde (23... :30 minutes) 4....

175

E-Print Network 3.0 - argon 30 Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

LIBRARY AT UTSI CONTACT Wes McMinn AT EXT 313 Summary: . Handling Oxygen Safely by Praxair (11:40 minutes). 3. Using Nitrogen and Argon Safely by Linde (23:30... . Safe...

176

E-Print Network 3.0 - argon Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

LIBRARY AT UTSI CONTACT Wes McMinn AT EXT 313 Summary: . Handling Oxygen Safely by Praxair (11:40 minutes). 3. Using Nitrogen and Argon Safely by Linde (23... :30 minutes) 4....

177

E-Print Network 3.0 - argon laser photocoagulation Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

LIBRARY AT UTSI CONTACT Wes McMinn AT EXT 313 Summary: . Handling Oxygen Safely by Praxair (11:40 minutes). 3. Using Nitrogen and Argon Safely by Linde (23... :30 minutes) 4....

178

Experimental Study on the Thermal Argon Plasma Generation and Jet Length Change Characteristics at Atmospheric Pressure  

Science Journals Connector (OSTI)

The generation, jet length and flow-regime change characteristics of argon plasma issuing into ambient air have been experimentally examined. Different torch structures have been used in the tests. Laminar pla...

Wenxia Pan; Xian Meng; Chengkang Wu; Xi Chen

2006-08-01T23:59:59.000Z

179

Investigation of condensed products of graphite evaporation in an electric arc in argon and helium atmosphere  

Science Journals Connector (OSTI)

The composition of products formed in the discharge chamber at the synthesis of nanostructures by arc discharge was investigated. The fullerene soot obtained in an argon atmosphere was shown to contain at leas...

V. I. Podgornyi; S. D. Kushch; A. N. Yakovlev…

2011-02-01T23:59:59.000Z

180

E-Print Network 3.0 - argon gas backgrounds Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Appl. Phys. 38 (2005) 15771587 doi:10.10880022-37273810013 Summary: mixtures (with a gas density N) of methane and argon subjected to an external constant electric field E......

Note: This page contains sample records for the topic "liquid argon prototype" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


181

E-Print Network 3.0 - argon isotopes Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

one of the earliest isotope... this is not always the case--see later). The naturally occurring isotopes of argon are measured by mass spectrometry... isotopes but also small...

182

E-Print Network 3.0 - argon isotopic chains Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

one of the earliest isotope... this is not always the case--see later). The naturally occurring isotopes of argon are measured by mass spectrometry... isotopes but also small...

183

Angular Distribution of Argon Ions and X-Ray Emissions in the Apf Plasma Focus Device  

Science Journals Connector (OSTI)

Angular distribution of ion beam emission from an argon gas-filled plasma focus devices has been investigated using an array...24 ions/steradian. Also, the study on the angular distribution of X-rays has been car...

G. R. Etaati; R. Amrollahi; M. Habibi; R. Baghdadi

2011-04-01T23:59:59.000Z

184

E-Print Network 3.0 - argon gas injection Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

power, Pe;ped does not decrease appreciably after argon injection (not shown). The energy loss per... an ELM. Although a strong H-mode transport barrier is maintained with ......

185

E-Print Network 3.0 - argon-seeded hydrogen sheet Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

search results for: argon-seeded hydrogen sheet Page: << < 1 2 3 4 5 > >> 1 2009 US-Japan Workshop on Advanced Simulation Methods in Plasma Physics Fast reconnection and...

186

Effect of Temperature on the Complexity of Solid Argon System  

E-Print Network [OSTI]

We study the measure of complexity in solid Argon(Ar) system from the time series data of kinetic energy(KE) of single Ar atoms at different equilibrated temperatures. To account the inherent multi-scale dependence of the complexity, the multi-scale entropy (MSE) of the time series of KE of individual Ar atoms are computed at different equilibrated temperatures. The MSE study reveals that the dynamics of an atom becomes more complex at higher temperatures and the result corroborates well with the variation of the pair correlation function of the atoms in the solid Ar crystal. Also, We repeat the MSE analysis for program generated Levy noise time series and for time series data obtained from the outcomes of exponential decay with noise dx(t) = -x(t) dt + sigma x dB(t)(Langevin equation). Our study establishes that the scale dependence of sample entropy for time series of KE of individual atoms in solid Ar system has similar tendency as that of Levy noise time series and the outcomes of exponential decay with n...

Giri, A; Barat, P

2014-01-01T23:59:59.000Z

187

Operating parameters and oscillation characteristics of an anode-layer Hall thruster with argon propellant  

Science Journals Connector (OSTI)

Abstract Currently, the propellant most often used in Hall effect thrusters is xenon and in recent years occasionally krypton. However, both noble gases are extremely scarce on Earth and missions with high propellant demand, e.g., high-power operation, are defied due to the limited annual production. Therefore, alternative abundant propellants like argon need to be considered. In this paper, the operation characteristics of the anode-layer Hall thruster (TAL) UT-58 with argon propellant are evaluated. Further, the guidelines of high-power operation with argon propellant have been investigated by discussing the discharge stability in each propellant using the same performance map. Finally, it is shown by these maps that optimum magnetic lines by magnetic shielding can be applied to the anode-layer Hall thruster with argon propellant. As a result, three regions were determined by comparing the oscillation amplitude using both xenon and argon, and it was discovered that the optimum operating points with argon propellant are in a region with low magnetic flux density.

Daiki Fujita; Rei Kawashima; Yuki Ito; Shohei Akagi; Jun Suzuki; Tony Schönherr; Hiroyuki Koizumi; Kimiya Komurasaki

2014-01-01T23:59:59.000Z

188

Development of a prototype optical refrigerator  

SciTech Connect (OSTI)

This is the final report of a one-year, Laboratory Directed Research and Development (LDRD) project at the Los Alamos National Laboratory (LANL). The authors have carried out a range of tasks directed toward the construction and testing of a proof-of-principle optical refrigerator prototype. They procured and tested new cooling elements that are at the heart of an optical refrigerator. The cooling element absorbs pump radiation and then fluoresces with nearly unity quantum efficiency. They constructed and tested a cooling chamber with low thermal emissivity walls that reduces the parasitic heating.

Epstein, R.I.; Edwards, B.C.; Sigel, G.H.

1998-01-01T23:59:59.000Z

189

Prototype for dS/CFT correspondence  

Science Journals Connector (OSTI)

We consider dS2/CFT1 where the asymptotic symmetry group of the de Sitter spacetime contains the Virasoro algebra. We construct representations of the Virasoro algebra realized in the Fock space of a massive scalar field in de Sitter space, built as excitations of the Euclidean vacuum state. These representations are unitary, without highest weight, and have vanishing central charge. They provide a prototype for a new class of conformal field theories dual to de Sitter backgrounds in string theory. The mapping of operators in the CFT to bulk quantities is described in detail. We comment on the extension to dS3/CFT2.

Alberto Güijosa; David A. Lowe; Jeff Murugan

2005-08-05T23:59:59.000Z

190

LANSCE Wire Scanner System Prototype: Switchyard Test  

SciTech Connect (OSTI)

On November 19, 2011, the beam diagnostics team of Los Alamos National Laboratory's LANSCE accelerator facility conducted a test of a prototype wire scanner system for future deployment within the accelerator's switchyard area. The primary focus of this test was to demonstrate the wire scanner control system's ability to extend its functionality beyond acquiring lower energy linac beam profile measurements to acquiring data in the switchyard. This study summarizes the features and performance characteristics of the electronic and mechanical implementation of this system with details focusing on the test results.

Sedillo, James D [Los Alamos National Laboratory

2012-04-11T23:59:59.000Z

191

Prototype dining hall energy efficiency study  

SciTech Connect (OSTI)

The energy consumption of food service facilities is among the highest of any commercial building type, owing to the special requirements for food preparation, sanitation, and ventilation. Consequently, the US Air Force Engineering and Services Center (AFESC) contracted with Pacific Northwest Laboratory (PNL) to collect and analyze end-use energy consumption data for a prototypical dining hall and make specific recommendations on cost-effective energy conservation options. This information will be used to establish or update criteria for dining hall designs and retrofits as appropriate. 6 refs., 21 figs., 23 tabs.

Mazzucchi, R.P.; Bailey, S.A.; Zimmerman, P.W.

1988-06-01T23:59:59.000Z

192

A Computuerized Operator Support System Prototype  

SciTech Connect (OSTI)

A report was published by the Idaho National Laboratory in September of 2012, entitled Design to Achieve Fault Tolerance and Resilience, which described the benefits of automating operator actions for transients. The report identified situations in which providing additional automation in lieu of operator actions would be advantageous. It recognized that managing certain plant upsets is sometimes limited by the operator’s ability to quickly diagnose the fault and to take the needed actions in the time available. Undoubtedly, technology is underutilized in the nuclear power industry for operator assistance during plant faults and operating transients. In contrast, other industry sectors have amply demonstrated that various forms of operator advisory systems can enhance operator performance while maintaining the role and responsibility of the operator as the independent and ultimate decision-maker. A computerized operator support system (COSS) is proposed for use in nuclear power plants to assist control room operators in addressing time-critical plant upsets. A COSS is a collection of technologies to assist operators in monitoring overall plant performance and making timely, informed decisions on appropriate control actions for the projected plant condition. The COSS does not supplant the role of the operator, but rather provides rapid assessments, computations, and recommendations to reduce workload and augment operator judgment and decision-making during fast-moving, complex events. This project proposes a general model for a control room COSS that addresses a sequence of general tasks required to manage any plant upset: detection, validation, diagnosis, recommendation, monitoring, and recovery. The model serves as a framework for assembling a set of technologies that can be interrelated to assist with each of these tasks. A prototype COSS has been developed in order to demonstrate the concept and provide a test bed for further research. The prototype is based on four underlying elements consisting of a digital alarm system, computer-based procedures, PI&D system representations, and a recommender module for mitigation actions. At this point, the prototype simulates an interface to a sensor validation module and a fault diagnosis module. These two modules will be fully integrated in the next version of the prototype. The initial version of the prototype is now operational at the Idaho National Laboratory using the U.S. Department of Energy’s Light Water Reactor Sustainability (LWRS) Human Systems Simulation Laboratory (HSSL). The HSSL is a full-scope, full-scale glass top simulator capable of simulating existing and future nuclear power plant main control rooms. The COSS is interfaced to the Generic Pressurized Water Reactor (gPWR) simulator with industry-typical control board layouts. The glass top panels display realistic images of the control boards that can be operated by touch gestures. A section of the simulated control board was dedicated to the COSS human-system interface (HSI), which resulted in a seamless integration of the COSS into the normal control room environment.

Ken Thomas; Ronald Boring; Roger Lew; Tom Ulrich; Richard Villim

2013-08-01T23:59:59.000Z

193

A Computuerized Operator Support System Prototype  

SciTech Connect (OSTI)

A report was published by the Idaho National Laboratory in September of 2012, entitled Design to Achieve Fault Tolerance and Resilience, which described the benefits of automating operator actions for transients. The report identified situations in which providing additional automation in lieu of operator actions would be advantageous. It recognized that managing certain plant upsets is sometimes limited by the operator’s ability to quickly diagnose the fault and to take the needed actions in the time available. Undoubtedly, technology is underutilized in the nuclear power industry for operator assistance during plant faults and operating transients. In contrast, other industry sectors have amply demonstrated that various forms of operator advisory systems can enhance operator performance while maintaining the role and responsibility of the operator as the independent and ultimate decision-maker. A computerized operator support system (COSS) is proposed for use in nuclear power plants to assist control room operators in addressing time-critical plant upsets. A COSS is a collection of technologies to assist operators in monitoring overall plant performance and making timely, informed decisions on appropriate control actions for the projected plant condition. The COSS does not supplant the role of the operator, but rather provides rapid assessments, computations, and recommendations to reduce workload and augment operator judgment and decision-making during fast-moving, complex events. This project proposes a general model for a control room COSS that addresses a sequence of general tasks required to manage any plant upset: detection, validation, diagnosis, recommendation, monitoring, and recovery. The model serves as a framework for assembling a set of technologies that can be interrelated to assist with each of these tasks. A prototype COSS has been developed in order to demonstrate the concept and provide a test bed for further research. The prototype is based on four underlying elements consisting of a digital alarm system, computer-based procedures, PI&D system representations, and a recommender module for mitigation actions. At this point, the prototype simulates an interface to a sensor validation module and a fault diagnosis module. These two modules will be fully integrated in the next version of the prototype. The initial version of the prototype is now operational at the Idaho National Laboratory using the U.S. Department of Energy’s Light Water Reactor Sustainability (LWRS) Human Systems Simulation Laboratory (HSSL). The HSSL is a full-scope, full-scale glass top simulator capable of simulating existing and future nuclear power plant main control rooms. The COSS is interfaced to the Generic Pressurized Water Reactor (gPWR) simulator with industry-typical control board layouts. The glass top panels display realistic images of the control boards that can be operated by touch gestures. A section of the simulated control board was dedicated to the COSS human-system interface (HSI), which resulted in a seamless integration of the COSS into the normal control room environment.

Ken Thomas; Ronald Boring; Roger Lew; Tom Ulrich; Richard Villim

2013-11-01T23:59:59.000Z

194

Characteristic x-ray production by argon projectiles moving in graphite targets between 30 and 200 keV  

Science Journals Connector (OSTI)

Thick-target yields and x-ray spectra have been measured for argon ions impinging on graphite targets at energies between 30 and 200 keV. The thick-target yields of carbon K-shell and argon L-shell x rays are analyzed on the basis of a simple model involving multiple collisions and molecular-orbital promotions. The analysis results in average argon L-shell fluorescence yields and total decay rates for argon ions traversing the solid. These values are found to be substantially lower than those appropriate to argon ions traversing a gas target. An explanation for the differences is proposed, and found to be corroborated by analysis of the observed x-ray spectra. An approximate determination of the argon M-shell vacancy distribution is obtained and compared with beam-foil charge equilibrium measurements.

R. J. Fortner and J. D. Garcia

1975-09-01T23:59:59.000Z

195

LNG liquid-liquid immiscibility  

SciTech Connect (OSTI)

Although natural gas species rarely exhibit liquid-liquid immiscibility in binary systems, the presence of additional components can extend the domain of immiscibility in those few binary systems where it already exists or produce immiscibility in binary systems where it had not existed. If the solute has the proper molecular relation to the solvent mixture background, liquid-liquid-vapor (LLV) behavior will occur; such phenomena greatly complicate the design of LNG processing equipment. To aid LNG engineers, researchers mapped the thermodynamic behavior of four ternary LLV systems and examined the effects of the second solvents - ethane, propane, n-butane, and CO/sub 2/ - on the binary methane + n-octane system.

Luks, K.D.; Kohn, J.P.

1981-09-01T23:59:59.000Z

196

90.1 Prototype Building Models Outpatient Healthcare | Building Energy  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Outpatient Healthcare Outpatient Healthcare The ASHRAE Standard 90.1 prototype building models were developed by Pacific Northwest National Laboratory in support of the U.S. Department of Energy's (DOE's) Building Energy Codes Program. These prototype buildings were derived from DOE's Commercial Reference Building Models. This suite of ASHRAE Standard 90.1 prototype buildings covers all the Reference Building types except supermarket, and also adds a new building prototype representing high-rise apartment buildings.The prototype models include 16 building types in 17 climate locations for ASHRAE Standards 90.1-2004, 90.1-2007 and 90.1-2010. This combination leads to a set of 816 building models (in EnergyPlus Version 6.0). Also included is a scorecard for each prototype building. The scorecard is a spreadsheet that summarizes the

197

Prototype system brings advantages of wireless technology to secure  

National Nuclear Security Administration (NNSA)

Prototype system brings advantages of wireless technology to secure Prototype system brings advantages of wireless technology to secure environment | National Nuclear Security Administration Our Mission Managing the Stockpile Preventing Proliferation Powering the Nuclear Navy Emergency Response Recapitalizing Our Infrastructure Continuing Management Reform Countering Nuclear Terrorism About Us Our Programs Our History Who We Are Our Leadership Our Locations Budget Our Operations Media Room Congressional Testimony Fact Sheets Newsletters Press Releases Speeches Events Social Media Video Gallery Photo Gallery NNSA Archive Federal Employment Apply for Our Jobs Our Jobs Working at NNSA Blog Home > NNSA Blog > Prototype system brings advantages of wireless technology ... Prototype system brings advantages of wireless technology to secure environment

198

PROTOTYPE PROGRAMMATIC AGREEMENT BETWEEN THE UNITED STATES DEPARTMENT...  

Energy Savers [EERE]

and Conservation Block Grant Program, the State Energy Plan, and the Weatherization Assistance Program. PROTOTYPE PROGRAMMATIC AGREEMENT BETWEEN THE UNITED STATES DEPARTMENT OF...

199

State of the Art Prototype Vehicle with a Thermoelectric Generator.  

Broader source: Energy.gov [DOE]

Highlights BMW and partners buildup and testing of state-of-the-art prototype vehicle with the thermoelectric generator that produced over 600W under highway driving conditions

200

MATLAB tensor classes for fast algorithm prototyping.  

SciTech Connect (OSTI)

Tensors (also known as mutidimensional arrays or N-way arrays) are used in a variety of applications ranging from chemometrics to psychometrics. We describe four MATLAB classes for tensor manipulations that can be used for fast algorithm prototyping. The tensor class extends the functionality of MATLAB's multidimensional arrays by supporting additional operations such as tensor multiplication. The tensor as matrix class supports the 'matricization' of a tensor, i.e., the conversion of a tensor to a matrix (and vice versa), a commonly used operation in many algorithms. Two additional classes represent tensors stored in decomposed formats: cp tensor and tucker tensor. We descibe all of these classes and then demonstrate their use by showing how to implement several tensor algorithms that have appeared in the literature.

Bader, Brett William; Kolda, Tamara Gibson (Sandia National Laboratories, Livermore, CA)

2004-10-01T23:59:59.000Z

Note: This page contains sample records for the topic "liquid argon prototype" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


201

Prototype of a tubeless vacuum insulated accelerator  

Science Journals Connector (OSTI)

The construction of a small prototype of a new kind of Cockroft-Walton accelerator is in progress. The onion-wise disposal of the capacitor plates allows a high-gradient compact machine, as well as the assurance of reliability. This kind of machine can overcome the problem of having an accelerating column of high perveance. In fact, because of its peculiar electromechanical structure, the whole high voltage generator can be settled inside a vacuum chamber and then an electron beam can be accelerated directly by the capacitor plates of the voltage multipliers. The scaled-up version of this machine seems to be particularly suited for high-current, high-efficiency applications, like FEL, ion acceleration for plasma heating or containment. The status report of the experiment will be presented.

A Boggia; G Brautti; A Raino; V Stagno; N Ceci; V Valentino; V Variale

1996-01-01T23:59:59.000Z

202

Lattice gas model for fragmentation: From Argon on Scandium to Gold on Gold  

E-Print Network [OSTI]

The recent fragmentation data for central collisions of Gold on Gold are even qualitatively different from those for central collisions of Argon on Scandium. The latter can be fitted with a lattice gas model calculation. Effort is made to understand why the model fails for Gold on Gold. The calculation suggests that the large Coulomb interaction which is operative for the larger system is responsible for this discrepancy. This is demonstrated by mapping the lattice gas model to a molecular dynamics calculation for disassembly. This mapping is quite faithful for Argon on Scandium but deviates strongly for Gold on Gold. The molecular dynamics calculation for disassembly reproduces the characteristics of the fragmentation data for both Gold on Gold and Argon on Scandium.

Subal Das Gupta; Jicai Pan

1995-12-20T23:59:59.000Z

203

Publishing Your Prototype Tool on the Web PUPTOL, a Framework  

E-Print Network [OSTI]

Publishing Your Prototype Tool on the Web PUPTOL, a Framework Axel Belinfante and Arend Rensink web forms. 1 Introduction Prototype tools are a prime method to show the feasibility of formal methods, or 2) making the tool available via a web form. In this paper we concentrate on the second scenario: we

Vellekoop, Michel

204

WirePrint: 3D printed previews for fast prototyping  

Science Journals Connector (OSTI)

Even though considered a rapid prototyping tool, 3D printing is so slow that a reasonably sized object requires printing overnight. This slows designers down to a single iteration per day. In this paper, we propose to instead print low-fidelity wireframe ... Keywords: 3D printing, rapid prototyping

Stefanie Mueller, Sangha Im, Serafima Gurevich, Alexander Teibrich, Lisa Pfisterer, François Guimbretičre, Patrick Baudisch

2014-10-01T23:59:59.000Z

205

Development of Wind Turbines Prototyping Software Under Matlab/Simulink  

E-Print Network [OSTI]

204 1 Development of Wind Turbines Prototyping Software Under Matlab/Simulink® Through present the development of a wind turbine prototyping software under Matlab/Simulink® through and the end of 1999, around 75% of all new grid-connected wind turbines worldwide were installed in Europe [3

Paris-Sud XI, Université de

206

Creating Works-Like Prototypes of Mechanical Objects Bongjin Koo  

E-Print Network [OSTI]

of creating works-like prototypes. Designers are increasingly turning to 3D printing as a tool for fab Graphics]: Computational Ge- ometry and Object Modeling--Geometric algorithms. Keywords: fabrication, 3D printing, sketch-based modeling Links: DL PDF WEB VIDEO 1 Introduction Creating physical prototypes

Agrawala, Maneesh

207

The Design and Implementation of a Prototype Exokernel Operating System  

E-Print Network [OSTI]

The Design and Implementation of a Prototype Exokernel Operating System by Dawson R. Engler of a Prototype Exokernel Operating System by Dawson R. Engler Submitted to the Department of Electrical of Master of Science in Computer Science and Engineering Abstract Traditional operating systems abstract

208

A mixed-fidelity prototyping tool for mobile devices  

Science Journals Connector (OSTI)

In this paper we present a software framework which supports the construction of mixed-fidelity (from sketch-based to software) prototypes for mobile devices. The framework is available for desktop computers and mobile devices (e.g., PDAs, Smartphones). ... Keywords: evaluation, mobile interaction design, prototyping, usability

Marco de Sá; Luís Carriço; Luís Duarte; Tiago Reis

2008-05-01T23:59:59.000Z

209

Laser propagation and energy absorption by an argon spark C. V. Bindhu, S. S. Harilal,a)  

E-Print Network [OSTI]

Laser propagation and energy absorption by an argon spark C. V. Bindhu, S. S. Harilal,a) M. S The laser propagation and energy absorption of an argon spark induced by a laser at different pressures is investigated. 8 ns pulses from a frequency-doubled Q-switched Nd:YAG laser are used to create the spark

Tillack, Mark

210

Atmospheric Pressure Humid Argon DBD Plasma for the Application of Sterilization -Measurement and Simulation of Hydrogen, Oxygen, and Hydrogen  

E-Print Network [OSTI]

Atmospheric Pressure Humid Argon DBD Plasma for the Application of Sterilization - Measurement, sterilization I. INTRODUCTION Non-thermal plasma technology at atmospheric pressure using oxygen of atmospheric pressure non-thermal argon plasma produced by a variety of techniques has recently begun

Paris-Sud XI, Université de

211

Commercial Prototype Building Models | Building Energy Codes Program  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Prototype Building Models Prototype Building Models The U.S. Department of Energy (DOE) supports the development of commercial building energy codes and standards by participating in review processes and providing analyses that are available for public review and use. To calculate the impact of ASHRAE Standard 90.1, researchers at Pacific Northwest National Laboratory (PNNL) created a suite of 16 prototype buildings covering 80% of the commercial building floor area in the United States for new construction, including both commercial buildings and mid- to high-rise buildings. These prototype buildings-derived from DOE's Commercial Reference Building Models-cover all the reference building types except supermarkets, and also add a new building prototype representing high-rise apartment buildings. As ASHRAE Standard 90.1

212

PROTOTYPE PROGRAMMATIC AGREEMENT BETWEEN THE UNITED STATES DEPARTMENT OF  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

PROTOTYPE PROGRAMMATIC AGREEMENT BETWEEN THE UNITED STATES PROTOTYPE PROGRAMMATIC AGREEMENT BETWEEN THE UNITED STATES DEPARTMENT OF ENERGY, THE [INSERT STATE NAME] ENERGY OFFICE AND THE [INSERT STATE NAME] STATE HISTORIC PRESERVATION OFFICE REGARDING EECBG, SEP AND WAP UNDERTAKINGS February 5, 2010 PROTOTYPE PROGRAMMATIC AGREEMENT BETWEEN THE UNITED STATES DEPARTMENT OF ENERGY, THE [INSERT STATE NAME] ENERGY OFFICE AND THE [INSERT STATE NAME] STATE HISTORIC PRESERVATION OFFICE REGARDING EECBG, SEP AND WAP UNDERTAKINGS February 5, 2010 Prototype programmatic agreement for the Energy Efficiency and Conservation Block Grant Program, the State Energy Plan, and the Weatherization Assistance Program. PROTOTYPE PROGRAMMATIC AGREEMENT BETWEEN THE UNITED STATES DEPARTMENT OF ENERGY, THE [INSERT STATE NAME] ENERGY OFFICE AND THE [INSERT STATE NAME]

213

Enhancements to ASHRAE Standard 90.1 Prototype Building Models  

SciTech Connect (OSTI)

This report focuses on enhancements to prototype building models used to determine the energy impact of various versions of ANSI/ASHRAE/IES Standard 90.1. Since the last publication of the prototype building models, PNNL has made numerous enhancements to the original prototype models compliant with the 2004, 2007, and 2010 editions of Standard 90.1. Those enhancements are described here and were made for several reasons: (1) to change or improve prototype design assumptions; (2) to improve the simulation accuracy; (3) to improve the simulation infrastructure; and (4) to add additional detail to the models needed to capture certain energy impacts from Standard 90.1 improvements. These enhancements impact simulated prototype energy use, and consequently impact the savings estimated from edition to edition of Standard 90.1.

Goel, Supriya; Athalye, Rahul A.; Wang, Weimin; Zhang, Jian; Rosenberg, Michael I.; Xie, YuLong; Hart, Philip R.; Mendon, Vrushali V.

2014-04-16T23:59:59.000Z

214

Reliability-Informed Beat Tracking of Musical Norberto Degara, Student Member, IEEE, Enrique Argones Rua, Member, IEEE, Antonio Pena, Member, IEEE,  

E-Print Network [OSTI]

, Enrique Argones R´ua, Member, IEEE, Antonio Pena, Member, IEEE, Soledad Torres-Guijarro, Matthew E. P by sending a request to pubs-permissions@ieee.org. Norberto Degara, Enrique Argones R´ua, Antonio Pena

Plumbley, Mark

215

NSLS prototype small-gap undulator (PSGU)  

SciTech Connect (OSTI)

The NSLS Prototype Small-Gap Undulator (PSGU) will serve as a tool to study lifetime degradation and the onset of beam instabilities as the beam duct aperture is decreased. The device will consist of variable-gap vacuum vessel had a permanent magnet undulator, with independent magnet-gap control. The vacuum vessel design attempts to minimize both residual gas pressures and beam impedances. The undulator will be 320 mm long and utilizes a pure-permanent-magnet structure with 6 blocks per 16 mm period. For a nominal operating aperture of 4 mm, PSGU will produce a peak brightness in the fundamental and third harmonic of 7 {times} 10{sup 16} and 1 {times} 10{sup 16} photons{sm bullet}sec{sup {minus}1}{sm bullet}mrad{sup {minus}2}mm{sup {minus}2}{sm bullet}(0.1% BW){sup {minus}1} at photon energies of 2.5 keV and 7.5 keV, respectively. 5 refs., 3 figs., 2 tabs.

Stefan, P.M.; Solomon, L.; Krinsky, S. (Brookhaven National Lab., Upton, NY (United States)); Rakowsky, G. (Rockwell International Corp., Canoga Park, CA (United States). Rocketdyne Div.)

1991-01-01T23:59:59.000Z

216

Neutron Scattering by Liquid Neon  

Science Journals Connector (OSTI)

A theory for neutron scattering by a semiclassical system, which is appropriate for liquid neon, is described. The theory is based on a generalized mean-field approximation involving the polarization potential and the screened response function, similarly to what has been done previously for argon and helium. The screened response function is assumed to be a sum of Gaussian functions weighted by the momentum-distribution function. The polarization potential and the width of the Gaussians are determined by the zeroth and third moments of the scattering law. The momentum distribution has the Maxwell—Boltzmann form, but includes quantum corrections to order ?2. The quantum-mechanical zero-point energy is found to increase the kinetic energy per particle to a value of about 30% greater than the classical equipartition value. Calculations have been done for wave-vector transfers in the range 0.75-5.5 times the wave vector at the principal maximum in the static-structure factor, and the theoretical line shapes have been folded with the resolution function for the experiments of Buyers et al. Comparison of the position of the maximum, full width at half-maximum, and line shapes with the experimental results gives good agreement.

W. C. Kerr and K. S. Singwi

1973-03-01T23:59:59.000Z

217

Multidimensional Simulation of Plasma in Argon through a Shock in Hypersonic Flow  

E-Print Network [OSTI]

Multidimensional Simulation of Plasma in Argon through a Shock in Hypersonic Flow Amrita K. Lonkar in gases at hypersonic speeds. A plasma is composed of multiple species in thermo-chemical nonequlibrium major advancements in the field of hypersonics in the past quarter century. Rocket- powered launch

Alonso, Juan J.

218

Multidimensional Simulation of Plasma in Argon through a Shock in Hypersonic Flow  

E-Print Network [OSTI]

Multidimensional Simulation of Plasma in Argon through a Shock in Hypersonic Flow Amrita K. Lonkar in gases at hypersonic speeds. A plasma is composed of multiple species in thermo-chemical nonequlibrium of hypersonics in the past quarter century. Rocket- powered launch vehicles typically achieve hypersonic speeds

Alonso, Juan J.

219

Control of radio-frequency atmospheric pressure argon plasma characteristics by helium gas mixing  

SciTech Connect (OSTI)

The control of plasma characteristics is one of the important issues in many atmospheric pressure plasma applications. In order to accomplish this control, a feasibility study was performed by investigating the role of helium gas in an argon glow plasma that were produced in ambient air by 13.56 MHz radio-frequency power. Optical emission spectroscopy was used to measure rotational temperature and emission spectra acquired between 300 and 840 nm. Based on electrical and optical measurements, parameters such as gas temperature, breakdown voltage, power coupling efficiency, spatial uniformity of rotational temperature, and the sum of the emission intensity were controlled by varying the argon and helium gas mixing ratio. The addition of helium gas (from 0 to 10 lpm) to the argon flow (of 10 lpm) lowered the breakdown voltage (from 430 to 300 V{sub pk}) and the rotational temperature (from 465 to 360 K). However, an excessive addition of helium resulted in a reduction of the spatial uniformity and efficiency of power coupling. When the ratio of helium to argon flow was between 0.3 and 0.5, a high spatial uniformity with a relatively low gas temperature and breakdown voltage was achieved. This suggests that mixing of the supply gas is a useful way of controlling the plasma characteristics that may be utilized for applications with specific required discharge conditions.

Moon, Se Youn; Han, Jewoo; Choe, W. [Department of Physics, Korea Advanced Institute of Science and Technology, 373-1 Guseong-dong, Yuseong-gu, Daejeon 305-701 (Korea, Republic of)

2006-01-15T23:59:59.000Z

220

Characterization of an atmospheric double arc argon-nitrogen plasma source  

SciTech Connect (OSTI)

In the framework of studies devoted to hazardous waste destruction, an original dc double anode plasma torch has been designed and tested, which produces an elongated, weak fluctuation and reproducible plasma jet at atmospheric pressure. The arc instabilities and dynamic behavior of the double arc argon-nitrogen plasma jet are investigated through the oscillations of electrical signals by combined means of fast Fourier transform and Wigner distribution. In our experiment, the restrike mode is identified as the typical fluctuation behavior in an argon-nitrogen plasma jet. The Fourier spectra and Wigner distributions exhibit two characteristic frequencies of 150 Hz and 4.1 kHz, which reveals that the nature of fluctuations in the double arc argon-nitrogen plasma can be ascribed to the undulation of the power supply and both arc roots motion on the anode channels. In addition, the microscopic properties of the plasma jet inside and outside the arc chamber are investigated by means of optical emission spectroscopy, which yields excitation, electronic, rotational, and vibrational temperatures, as well as the electron number density. The results allow us to examine the validity criteria of a local thermodynamic equilibrium (LTE) state in the plasma arc. The measured electron densities are in good agreement with those calculated from the LTE model, which indicates that the atmospheric double arc argon-nitrogen plasma in the core region is close to the LTE state under our experimental conditions.

Tu, X. [State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027 (China); UMR 6614 CNRS CORIA, Saint Etienne du Rouvray 76801 (France); Cheron, B. G. [UMR 6614 CNRS CORIA, Saint Etienne du Rouvray 76801 (France); Yan, J. H.; Yu, L.; Cen, K. F. [State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027 (China)

2008-05-15T23:59:59.000Z

Note: This page contains sample records for the topic "liquid argon prototype" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


221

Studies of Plasma Dynamics in a Small Plasma Focus Operating in Hydrogen-Argon Mixtures  

Science Journals Connector (OSTI)

We report on experimental observations in PFP-I, a small 3.8 kJ plasma focus, which is operated in Hydrogen-Argon mixtures...2-Ar mixing ratio. Hot spot sizes around 150 ?m in the soft X-ray region, have been inf...

M. Favre; P. Silva; H. Chuaqui; E. Wyndham; P. Choi…

1997-01-01T23:59:59.000Z

222

Lattice Boltzmann Computation of Plasma Jet Behaviors : part II Argon-Nitrogen Mixture  

E-Print Network [OSTI]

the applications to simulating flows with temperature-dependent diffusion parameters (viscosity and diffusivity. Argon and Nitrogen are two gases of the most ones used in plasma spraying. The mixture is used when spraying. Our numerical results based on the centerline temperature and velocity profiles, its

Paris-Sud XI, Université de

223

STANDARD OPERATING PROCEDURES Spectra Physics BeamLok 2080-12 Argon Laser  

E-Print Network [OSTI]

ignition) several seconds later and the laser is ready to lase. After another several seconds, the current1 STANDARD OPERATING PROCEDURES Spectra Physics BeamLok 2080-12 Argon Laser (Revised 1/22/04) Important things to know: · Always run the laser in current mode. This operates at a more consistent output

224

Analysis of time-resolved argon line spectra from OMEGA direct-drive implosions  

SciTech Connect (OSTI)

We discuss the observation and data analysis of argon K-shell line spectra from argon-doped deuterium-filled OMEGA direct-drive implosion cores based on data recorded with two streaked crystal spectrometers. The targets were 870 {mu}m in diameter, 27 {mu}m wall thickness plastic shells filled with 20 atm of deuterium gas, and a tracer amount of argon for diagnostic purposes. The argon K-shell line spectrum is primarily emitted at the collapse of the implosion and its analysis provides a spectroscopic diagnostic of the core implosion conditions. The observed spectra includes the He{alpha}, Ly{alpha}, He{beta}, He{gamma}, Ly{beta}, and Ly{gamma} line emissions and their associated He- and Li-like satellites thus covering a broad photon energy range from 3100 to 4200 eV with a spectral resolution power of approximately 500. The data analysis relies on detailed atomic and spectral models that take into account nonequilibrium collisional-radiative atomic kinetics, Stark-broadened line shapes, and radiation transport calculations.

Florido, R.; Nagayama, T.; Mancini, R. C. [Department of Physics, University of Nevada, Reno, Nevada 89557 (United States); Tommasini, R. [Lawrence Livermore National Laboratory, Livermore, California 94550 (United States); Delettrez, J. A.; Regan, S. P.; Smalyuk, V. A. [Laboratory for Laser Energetics, University of Rochester, New York 14623 (United States); Rodriguez, R.; Gil, J. M. [Departamento de Fisica, Universidad de Las Palmas de Gran Canaria, 35017 Las Palmas de Gran Canaria (Spain)

2008-10-15T23:59:59.000Z

225

High efficiency radioisotope thermophotovoltaic prototype generator  

SciTech Connect (OSTI)

A radioisotope thermophotovoltaic generator space power system (RTPV) is lightweight, low-cost alternative to the present radioisotope thermoelectric generator system (RTG). The fabrication of such an RTPV generator has recently become feasible as the result of the invention of the GaSb infrared sensitive photovoltaic cell. Herein, the authors present the results of a parametric study of emitters and optical filters in conjuction with existing data on gallium antimonide cells. They compare a polished tungsten emitter with an Erbia selective emitter for use in combination with a simple dielectric filter and a gallium antimonide cell array. They find that the polished tungsten emitter is by itself a very selective emitter with low emissivity beyond 4 microns. Given a gallium antimonide cell and a tungsten emitter, a simple dielectric filter can be designed to transmit radiant energy below 1.7 microns and to reflect radiant energy between 1.7 and 4 microns back to the emitter. Because of the low long wavelength emissivity associated with the polished tungsten emitter, this simple dielectric filter then yields very respectable system performance. Also as a result of the longer wavelength fall-off in the tungsten emissivity curve, the radiation energy peak for a polished tungsten emitter operating at 1300 K shifts to shorter wavelengths relative to the blackbody spectrum so that the radiated energy peak falls right at the gallium antimonide cell bandedge. The result is that the response of the gallium antimonide cell is well matched to a polished tungsten emitter. The authors propose, therefore, to fabricate an operating prototype of a near term radioisotope thermophotovoltaic generator design consisting of a polished tungsten emitter, standard gallium antimonide cells, and a near-term dielectric filter.

Avery, J.E.; Samaras, J.E.; Fraas, L.M.; Ewell, R. [JX Crystals, Inc., Issaquah, WA (United States)

1995-10-01T23:59:59.000Z

226

An analysis of early stage prototypes using implementation, look and feel, and role  

E-Print Network [OSTI]

Identifying the purpose of a prototype is central to making informed decisions about the kind of prototype to build. Houde and Hill (1997) propose a model for classifying prototypes according to their purpose and the design ...

Hernley, Lauren R. (Lauren Renee)

2011-01-01T23:59:59.000Z

227

THE PROTOTYPE ALUMINUM - CARBON SINGLE, DOUBLE, AND TRIPLE BONDS: Al - CH3, Al = CH2, AND Al. = CH  

E-Print Network [OSTI]

three prototype Table II. aluminum-carbon bonds and theirPhysics THE PROTOTYPE ALUMINUM - CARBON SINGLE, DOUBLE, ANDLBL-l0871 The Prototype Aluminum - Carbon Single, Double.

Fox, Douglas J.

2011-01-01T23:59:59.000Z

228

Liquid electrode  

DOE Patents [OSTI]

A dropping electrolyte electrode is described for use in electrochemical analysis of non-polar sample solutions, such as benzene or cyclohexane. The liquid electrode, preferably an aqueous salt solution immiscible in the sample solution, is introduced into the solution in dropwise fashion from a capillary. The electrolyte is introduced at a known rate, thus, the droplets each have the same volume and surface area. The electrode is used in making standard electrochemical measurements in order to determine properties of non-polar sample solutions. 2 figures.

Ekechukwu, A.A.

1994-07-05T23:59:59.000Z

229

Norcal Prototype LNG Truck Fleet: Final Data Report  

SciTech Connect (OSTI)

U.S. DOE and National Renewable Energy Laboratory evaluated Norcal Waste Systems liquefied natural gas (LNG) waste transfer trucks. Trucks had prototype Cummins Westport ISXG engines. Report gives final data.

Chandler, K.; Proc, K.

2005-02-01T23:59:59.000Z

230

Tailoring the prototyping process to achieve customer value  

E-Print Network [OSTI]

The main objective for prototyping is to get the most value out of the opportunity. Value may take the form of information, performance, displaying production readiness or proving capability for the amount of resources ...

Jordan, Brian Lane

2008-01-01T23:59:59.000Z

231

Prototype Spallation Neutron Source Rotating Target Assembly Final Test Report  

SciTech Connect (OSTI)

A full-scale prototype of an extended vertical shaft, rotating target assembly based on a conceptual target design for a 1 to 3-MW spallation facility was built and tested. Key elements of the drive/coupling assembly implemented in the prototype include high integrity dynamic face seals, commercially available bearings, realistic manufacturing tolerances, effective monitoring and controls, and fail-safe shutdown features. A representative target disk suspended on a 3.5 meter prototypical shaft was coupled with the drive to complete the mechanical tests. Successful operation for 5400 hours confirmed the overall mechanical feasibility of the extended vertical shaft rotating target concept. The prototype system showed no indications of performance deterioration and the equipment did not require maintenance or relubrication.

McManamy, Thomas J [ORNL; Graves, Van [Oak Ridge National Laboratory (ORNL); Garmendia, Amaia Zarraoa [IDOM Bilbao; Sorda, Fernando [ESS Bilbao; Etxeita, Borja [IDOM Bilbao; Rennich, Mark J [ORNL

2011-01-01T23:59:59.000Z

232

MOWII Webinar: OCGen Prototype Testing: Evaluating Buoyancy Pod...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Tidal Energy Development MOWII Webinar: OCGen Prototype Testing: Evaluating Buoyancy PodTension Leg Platforms for Tidal Energy Development November 13, 2014 10:00AM to 10:45AM...

233

SECOQC: Major results, the QKD?Network Prototype in Vienna  

Science Journals Connector (OSTI)

The main results of the integrated EC project SECOQC are presented with a focus on the SECOQC prototype—a Quantum Key Distribution (QKD) back?bone network formed by eight QKD?Link devices.

Momtchil Peev; European Integrated Project SECOQC

2009-01-01T23:59:59.000Z

234

Conventional machining methods for rapid prototyping and direct manufacturing  

Science Journals Connector (OSTI)

The material and product accuracy limitations of rapid prototyped products can often prevent the use of rapid prototyping (RP) processes for production of final end-use products. Conventional machining processes are well-developed technologies with the capability of employing a wide range of materials in the creation of highly accurate components. This paper presents an overview of how conventional machining processes can be used for RP and direct manufacturing processes. The methodologies of computer numerical control machining for rapid prototyping (CNC-RP) and wire electronic discharge machining for rapid prototyping (WEDM-RP) are presented in this paper. A general discussion of selection criteria and cost comparisons among both current additive RP and conventional machining approaches to rapid manufacturing are also presented.

Zhi Yang; Richard A. Wysk; Sanjay Joshi; Matthew C. Frank; Joseph E. Petrzelka

2009-01-01T23:59:59.000Z

235

The Options Approach to Software Prototyping Decisions 1  

E-Print Network [OSTI]

of a software design choice. Boehm [1] pioneered the use of techniques from statistical decision theory Bayesian decision theory to calcuThe Options Approach to Software Prototyping Decisions 1 Prasad Chalasani Somesh Jha Kevin Sullivan

236

Power capping in SLURM First prototype results and feedback  

E-Print Network [OSTI]

Power capping in SLURM First prototype results and feedback Green days @Lille, November 2013;Green days @Lille, November 2013 | Matthieu Hautreux | 2/27 Power capping Green days @Lille, November 2013 | Matthieu Hautreux | 3/27 Power capping

Lefèvre, Laurent

237

A First-Generation Prototype Dynamic Residential Window  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

A First-Generation Prototype Dynamic Residential Window A First-Generation Prototype Dynamic Residential Window Title A First-Generation Prototype Dynamic Residential Window Publication Type Report LBNL Report Number LBNL-56075 Year of Publication 2004 Authors Kohler, Christian, Howdy Goudey, and Dariush K. Arasteh Call Number LBNL-56075 Abstract We present the concept for a smart highly efficient dynamic window that maximizes solar heat gain during the heating season and minimizes solar heat gain during the cooling season in residential buildings. We describe a prototype dynamic window that relies on an internal shade, which deploys automatically in response to solar radiation and temperature. This prototype was built at Lawrence Berkeley National Laboratory from commercially available off-the-shelf components. It is a stand-alone, standard-size product, so it can be easily installed in place of standard window products. Our design shows promise for near-term commercialization. Improving thermal performance of this prototype by incorporating commercially available highly efficient glazing technologies could result in the first window that could be suitable for use in zero-energy homes. The units predictable deployment of shading could help capture energy savings that are not possible with manual shading. Installation of dynamically shaded windows in the field will allow researchers to better quantify the energy effects of shades, which could lead to increased efficiency in the sizing of heating, ventilation, and air conditioning equipment for residences.

238

Dr, Bruce L. Chrisman Chief Operating Officer F~rmilab  

Broader source: Energy.gov (indexed) [DOE]

Dr, Bruce L. Chrisman Dr, Bruce L. Chrisman Chief Operating Officer F~rmilab P.O. Box 500 Batavia, IL 60510 Dear Dr. Chrisman: SUBJECT": NATIONAL ENVIRQNMENTAL POLICY ACT (NEPI~) DETERMINATION .~T FERMI N,4TIONAL ACCELERATOR LABORATORY (FERMILAB~ - 35 TOE( LIQUID ARGON PROTOTYPE DETECTOR Reference: Letter, from B. Chrisman to M. Weis, dated Aprif 11, 2012, Subject: National Environmental Policy Act (NEPA) Environmental Evaluation Notification Forrri (EENF) for the 35 Ton Liquid Argon Prototype Detector have reviewed the Fermilab EENF for the 35 Ton Liquid Argon Prototype Detector. Based on the information provided in the EENF, I have approved the following categorical exclusion (CX): Project Name 35 Ton Liquid Argon Detector Approved CX 4/12/207 2 B3.6 am returning a signed copy of the EENF for your records. No further ~IEPA review is required.

239

Guidance Document Cryogenic Liquids  

E-Print Network [OSTI]

Guidance Document Cryogenic Liquids [This is a brief and general summary. Read the full MSDS for more details before handling.] Introduction: All cryogenic liquids are gases at normal temperature liquefies them. Cryogenic liquids are kept in the liquid state at very low temperatures. Cryogenic liquids

240

Vacuum Studies of a Prototype Composite Coil Dewar for HTSC Transformers  

SciTech Connect (OSTI)

Oak Ridge National Laboratory (ORNL) is collaborating with Waukesha Electric Systems (WES) to develop a high-temperature superconducting (HTSC) utility power transformer with primary and secondary coils cooled by liquid nitrogen. Since the vacuuminsulated cryogenic coil dewar surrounds the magnetic core limb and cannot form a shorted turn, non-conductive materials are required. Two test vessels and a small prototype dewar have been fabricated by Scorpius Space Launch Company with epoxy/fiberglass composites, using their proprietary PRESSURMAXX vessel technology. The effects of pumping time, bakeout temperature, and cryogenic vessel temperature on vacuum outgassing rates have been investigated. Outgassing rates of the individual materials used in vessel construction have also been measured. The results will be scaled up to determine the required pumping capacity for a full-size 25-MVA commercial transformer dewar.

Schwenterly, S W [ORNL] [ORNL; Zhang, Y. [Oak Ridge National Laboratory (ORNL)] [Oak Ridge National Laboratory (ORNL); Pleva, Ed [Waukesha Electric Systems, Waukesha, WI] [Waukesha Electric Systems, Waukesha, WI; Rufer, M. [Scorpius Space Launch Co.] [Scorpius Space Launch Co.

2010-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "liquid argon prototype" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


241

Performance of a cryogenic system prototype for the XENON1T Detector  

E-Print Network [OSTI]

We have developed an efficient cryogenic system with heat exchange and associated gas purification system, as a prototype for the XENON1T experiment. The XENON1T detector will use about 3 ton of liquid xenon (LXe) at a temperature of 175K as target and detection medium for a dark matter search. In this paper we report results on the cryogenic system performance focusing on the dynamics of the gas circulation-purification through a heated getter, at flow rates above 50 Standard Liter per Minute (SLPM). A maximum flow of 114 SLPM has been achieved, and using two heat exchangers in parallel, a heat exchange efficiency better than 96% has been measured.

Elena Aprile; Ran Budnik; Bin Choi; Hugo Contreras; Karl Giboni; Luke Goetzke; Rafael Lang; Kyungeun Lim; Antonio melgarejo; Petr Shagin

2012-08-09T23:59:59.000Z

242

Tank 241-AZ-101 prototype corrosion probe four month status report  

SciTech Connect (OSTI)

High-level nuclear wastes at the Hanford Site are stored underground in carbon steel double-shell and single-shell tanks. The installation of a prototype corrosion monitoring system into double-shell tank 241-AZ-101 was completed in August, 1996. The system monitors fluctuations in corrosion current and potential (electrochemical noise) occurring on three electrode arrays immersed in the waste liquid and in the vapor space above the waste. The system also supports the use of Tafel and linear polarization resistance testing. By monitoring and analyzing the data from these techniques, changes in the corrosive characteristics of the waste have been rapidly detected and correlated with operational changes in the tank.

Edgemon, G.L., Westinghouse Hanford

1996-12-12T23:59:59.000Z

243

Effects of Argon Dilution on the Translational and Rotational Temperatures of SiH in Silane and Disilane Plasmas  

Science Journals Connector (OSTI)

The effects of argon dilution on the translational and rotational temperatures of SiH in both silane and disilane plasmas have been investigated using the imaging of radicals interacting with surfaces (IRIS) technique. The average rotational temperature ...

Jie Zhou; Jianming Zhang; Ellen R. Fisher

2005-11-02T23:59:59.000Z

244

Atmospheric-Pressure Argon Surface-Wave Plasma (SWP) as an Ion Source in Elemental Mass Spectrometry  

Science Journals Connector (OSTI)

Results of the study of a high-power argon surface-wave plasma as an ion source for mass spectrometric elemental analysis of aqueous solutions are presented. The plasma is operated...

Boudreau, D; Hubert, J

1993-01-01T23:59:59.000Z

245

Synthesis of AuPd alloyed nanoparticles via room-temperature electron reduction with argon glow discharge as electron source  

Science Journals Connector (OSTI)

Argon glow discharge has been employed as a cheap, environmentally friendly, and convenient electron source for simultaneous reduction of HAuCl4 and PdCl2...on the anodic aluminum oxide (AAO) substrate. The therm...

Manman Yang; Zongyuan Wang; Wei Wang; Chang-jun Liu

2014-08-01T23:59:59.000Z

246

A liquid film motor  

Science Journals Connector (OSTI)

It is well known that electro-hydrodynamical effects in freely suspended liquid films can force liquids to flow. Here, we report a purely electrically driven rotation in water and some other liquid suspended film...

A. Amjadi; R. Shirsavar; N. Hamedani Radja…

2009-05-01T23:59:59.000Z

247

Observation of ? mode electron heating in dusty argon radio frequency discharges  

SciTech Connect (OSTI)

The time-resolved emission of argon atoms in a dusty plasma has been measured with phase-resolved optical emission spectroscopy using an intensified charge-coupled device camera. For that purpose, three-dimensional dust clouds have been confined in a capacitively coupled rf argon discharge with the help of thermophoretic levitation. While electrons are exclusively heated by the expanding sheath (? mode) in the dust-free case, electron heating takes place in the entire plasma bulk when the discharge volume is filled with dust particles. Such a behavior is known as ? mode, first observed in electronegative plasmas. Furthermore, particle-in-cell simulations have been carried out, which reproduce the trends of the experimental findings. These simulations support previous numerical models showing that the enhanced atomic emission in the plasma can be attributed to a bulk electric field, which is mainly caused by the reduced electrical conductivity due to electron depletion.

Killer, Carsten; Bandelow, Gunnar; Schneider, Ralf; Melzer, André [Institut für Physik, Ernst-Moritz-Arndt-Universität Greifswald, 17489 Greifswald (Germany)] [Institut für Physik, Ernst-Moritz-Arndt-Universität Greifswald, 17489 Greifswald (Germany); Matyash, Konstantin [Universitätsrechenzentrum, Ernst-Moritz-Arndt-Universität Greifswald, 17489 Greifswald (Germany)] [Universitätsrechenzentrum, Ernst-Moritz-Arndt-Universität Greifswald, 17489 Greifswald (Germany)

2013-08-15T23:59:59.000Z

248

Contamination d'un plasma d'argon par des vapeurs anodiques de cuivre P. Andanson et B. Cheminat  

E-Print Network [OSTI]

symboles Nous présentons une étude expérimentale sur la contamination d'un plasma d'arc par des vapeurs775 Contamination d'un plasma d'argon par des vapeurs anodiques de cuivre P. Andanson et B proche de l'anode en cuivre (1 mm à 1 cm) d'un arc stabilisé sous atmosphère d'argon (15 A et 30 A) est

Boyer, Edmond

249

A Large Underground Liquid Argon Detector without a Cryostat? Kirk T McDonald (kirkmcd@princeton.edu)  

E-Print Network [OSTI]

, fabrication of this type of tank in an underground cavern is likely to be prohibitively expensive. Here, we

McDonald, Kirk

250

Influence of oxygen in atmospheric-pressure argon plasma jet on sterilization of Bacillus atrophaeous spores  

Science Journals Connector (OSTI)

A nonequilibrium Ar ? O 2 plasmadischarge at atmospheric pressure was carried out in a coaxial cylindrical reactor with a stepped electrode configuration powered by a 13.56 MHz rf power supplier. The argon glow discharge with high electron density produces oxygen reactive species in large quantities. Argon plasma jets penetrate deep into ambient air and create a path for oxygen radicals to sterilize microbes. A sterilization experiment with bacterial endospores indicates that an argon-oxygen plasma jet very effectively kills endospores of Bacillus atrophaeus (ATCC 9372) thereby demonstrating its capability to clean surfaces and its usefulness for reinstating contaminated equipment as free from toxic biological warfare agents. The decimal reduction time ( D values) of the Ar ? O 2 plasma jet at an exposure distance of 0.5 – 1.5 cm ranges from 5 to 57 s . An actinometric comparison of the sterilization data shows that atomic oxygen radicals play a significant role in plasma sterilization. When observed under a scanning electron microscope the average size of the spores appears to be greatly reduced due to chemical reactions with the oxygen radicals.

Jin-Pyo Lim; Han S. Uhm; Shou-Zhe Li

2007-01-01T23:59:59.000Z

251

Influence of oxygen in atmospheric-pressure argon plasma jet on sterilization of Bacillus atrophaeous spores  

SciTech Connect (OSTI)

A nonequilibrium Ar/O{sub 2} plasma discharge at atmospheric pressure was carried out in a coaxial cylindrical reactor with a stepped electrode configuration powered by a 13.56 MHz rf power supplier. The argon glow discharge with high electron density produces oxygen reactive species in large quantities. Argon plasma jets penetrate deep into ambient air and create a path for oxygen radicals to sterilize microbes. A sterilization experiment with bacterial endospores indicates that an argon-oxygen plasma jet very effectively kills endospores of Bacillus atrophaeus (ATCC 9372), thereby demonstrating its capability to clean surfaces and its usefulness for reinstating contaminated equipment as free from toxic biological warfare agents. The decimal reduction time (D values) of the Ar/O{sub 2} plasma jet at an exposure distance of 0.5-1.5 cm ranges from 5 to 57 s. An actinometric comparison of the sterilization data shows that atomic oxygen radicals play a significant role in plasma sterilization. When observed under a scanning electron microscope, the average size of the spores appears to be greatly reduced due to chemical reactions with the oxygen radicals.

Lim, Jin-Pyo; Uhm, Han S.; Li, Shou-Zhe [Department of Molecular Science and Technology, Ajou University, San 5 Wonchon-Dong, Youngtong-Gu, Suwon 443-749 (Korea, Republic of); State Key Laboratory of Materials Modification by Laser, Ion and Electron Beams Department of Physics, Dalian University of Technology, Dalian 116024 (China)

2007-09-15T23:59:59.000Z

252

High Resolution He-like Argon And Sulfur Spectra From The PSI ECRIT  

E-Print Network [OSTI]

We present new results on the X-ray spectroscopy of multicharged argon, sulfur and chlorine obtained with the Electron Cyclotron Resonance Ion Trap (ECRIT) in operation at the Paul Scherrer Institut (Villigen, Switzerland). We used a Johann-type Bragg spectrometer with a spherically-bent crystal, with an energy resolution of about 0.4 eV. The ECRIT itself is of a hybrid type, with a superconducting split coil magnet, special iron inserts which provides the mirror field, and a permanent magnetic hexapole. The high frequency was provided by a 6.4 GHz microwave emitter. We obtained high intensity X-ray spectra of multicharged F-like to He-like argon, sulfur and chlorine with one 1s hole. In particular, we observed the $1s2s^{3}S_1 \\to 1s^2^{1}S_0 M1$ and $1s2p^{3}P_2 \\to 1s^2^{1}S_0 M2$ transitions in He-like argon, sulfur and chlorine with unprecedented statistics and resolution. The energies of the observed lines are being determined with good accuracy using the He-like M1 line as a reference.

Trassinelli, M; Boucard, S; Covita, D S; Dos Santos, J M F; Gotta, D; Hirtl, A; Indelicato, P J; Le Bigot, E O; Leoni, B; Simons, L M; Stingelin, L; Veloso, J F C; Wasser, A; Zmeskal, J; Bigot, Eric-Olivier Le; Biri, Sandor; Boucard, Stephane; Covita, Daniel S.; Gotta, Detlev; Hirtl, Albert; Indelicato, Paul; Leoni, Bruno; Santos, Joaquim M.F. Dos; Simons, Leopold M.; Stingelin, Lucas; Trassinelli, Martino; Veloso, Joao F.C.A.; Wasser, Alfred; Zmeskal, Johann; ccsd-00003163, ccsd

2004-01-01T23:59:59.000Z

253

Design of the Prototypical Cryomodule for the EUROTRANS Superconducting Linac for Nuclear Waste Transmutation  

E-Print Network [OSTI]

Design of the Prototypical Cryomodule for the EUROTRANS Superconducting Linac for Nuclear Waste Transmutation

Barbanotti, S; Blache, P; Commeaux, C; Duthil, P; Panzeri, N; Pierini, P; Rampnoux, E; Souli, M

2008-01-01T23:59:59.000Z

254

Argon Abundances in the Solar Neighborhood: Non-LTE Analysis of Orion Association B-type Stars  

E-Print Network [OSTI]

Argon abundances have been derived for a sample of B main-sequence stars in the Orion association. The abundance calculations are based on NLTE metal line-blanketed model atmospheres calculated with the NLTE code TLUSTY and an updated and complete argon model atom. We derive an average argon abundance for this young population of A(Ar) = 6.66 +- 0.06. While our result is in excellent agreement with a recent analysis of the Orion nebula, it is significantly higher than the currently recommended solar value which is based on abundance measurements in the solar corona. Moreover, the derived argon abundances in the Orion B stars agree very well with a measurement from a solar impulsive flare during which unmodified solar photospheric material was brought to flare conditions. We therefore argue that the argon abundances obtained independently for both the Orion B stars and the Orion nebula are representative of the disk abundance value in the solar neighborhood. The lower coronal abundance may reflect a depletion related to the FIP effect. We propose a new reference value for the abundance of argon in the solar neighborhood, A(Ar) = 6.63 +- 0.10, corresponding to Ar/O = 0.009.

Thierry Lanz; Katia Cunha; Jon Holtzman; Ivan Hubeny

2007-09-13T23:59:59.000Z

255

Biointrusion test plan for the Permanent Isolation Surface Barrier Prototype  

SciTech Connect (OSTI)

This document provides a testing and monitoring plan for the biological component of the prototype barrier slated for construction at the Hanford Site. The prototype barrier is an aboveground structure engineered to demonstrate the basic features of an earthen cover system. It is designed to permanently isolate waste from the biosphere. The features of the barrier include multiple layers of soil and rock materials and a low-permeability asphalt sublayer. The surface of the barrier consists of silt loam soil, covered with plants. The barrier sides are reinforced with rock or coarse earthen-fill to protect against wind and water erosion. The sublayers inhibit plant and animal intrusion and percolation of water. A series of tests will be conducted on the prototype barrier over the next several years to evaluate barrier performance under extreme climatic conditions. Plants and animals will play a significant role in the hydrologic and water and wind erosion characteristics of the prototype barrier. Studies on the biological component of the prototype barrier will include work on the initial revegetation of the surface, continued monitoring of the developing plant community, rooting depth and dispersion in the context of biointrusion potential, the role of plants in the hydrology of the surface and toe regions of the barrier, the role of plants in stabilizing the surface against water and wind erosion, and the role of burrowing animals in the hydrology and water and wind erosion of the barrier.

Link, S.O.; Cadwell, L.L.; Brandt, C.A.; Downs, J.L.; Rossi, R.E.; Gee, G.W.

1994-04-01T23:59:59.000Z

256

Development of a Very Dense Liquid Cooled Compute Platform  

SciTech Connect (OSTI)

The objective of this project was to design and develop a prototype very energy efficient high density compute platform with 100% pumped refrigerant liquid cooling using commodity components and high volume manufacturing techniques. Testing at SLAC has indicated that we achieved a DCIE of 0.93 against our original goal of 0.85. This number includes both cooling and power supply and was achieved employing some of the highest wattage processors available.

Hughes, Phillip N.; Lipp, Robert J.

2013-12-10T23:59:59.000Z

257

Frostbite Theater - Liquid Oxygen vs. Liquid Nitrogen - Liquid Oxygen and  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Cells vs. Liquid Nitrogen! Cells vs. Liquid Nitrogen! Previous Video (Cells vs. Liquid Nitrogen!) Frostbite Theater Main Index Next Video (Paramagnetism) Paramagnetism Liquid Oxygen and Fire! What happens when nitrogen and oxygen are exposed to fire? [ Show Transcript ] Announcer: Frostbite Theater presents... Cold Cuts! No baloney! Joanna and Steve: Just science! Joanna: Hi! I'm Joanna! Steve: And I'm Steve! Joanna: And this is a test tube of liquid nitrogen! Steve: And this is a test tube of liquid oxygen! Joanna: Let's see what happens when nitrogen and oxygen are exposed to fire. Steve: Fire?! Joanna: Yeah! Steve: Really?! Joanna: Why not! Steve: Okay! Joanna: As nitrogen boils, it changes into nitrogen gas. Because it's so cold, it's denser than the air in the room. The test tube fills up with

258

Evaluation of Computer- Based Procedure System Prototype | Department of  

Broader source: Energy.gov (indexed) [DOE]

Computer- Based Procedure System Prototype Computer- Based Procedure System Prototype Evaluation of Computer- Based Procedure System Prototype This research effort is a part of the Light-Water Reactor Sustainability (LWRS) Program, which is a research and development (R&D) program sponsored by Department of Energy (DOE) and performed in close collaboration with industry R&D programs that provides the technical foundations for licensing and managing the long-term, safe, and economical operation of current nuclear power plants. The LWRS program serves to help the U.S. nuclear industry adopt new technologies and engineering solutions that facilitate the continued safe operation of the plants and extension of the current operating licenses. The introduction of advanced technology in existing nuclear power plants

259

Evaluation of Computer- Based Procedure System Prototype | Department of  

Broader source: Energy.gov (indexed) [DOE]

Evaluation of Computer- Based Procedure System Prototype Evaluation of Computer- Based Procedure System Prototype Evaluation of Computer- Based Procedure System Prototype This research effort is a part of the Light-Water Reactor Sustainability (LWRS) Program, which is a research and development (R&D) program sponsored by Department of Energy (DOE) and performed in close collaboration with industry R&D programs that provides the technical foundations for licensing and managing the long-term, safe, and economical operation of current nuclear power plants. The LWRS program serves to help the U.S. nuclear industry adopt new technologies and engineering solutions that facilitate the continued safe operation of the plants and extension of the current operating licenses. The introduction of advanced technology in existing nuclear power plants

260

Pierre's Prototype for Wind and Solar - Capitol Lake Plaza | Department  

Broader source: Energy.gov (indexed) [DOE]

Pierre's Prototype for Wind and Solar - Capitol Lake Plaza Pierre's Prototype for Wind and Solar - Capitol Lake Plaza Pierre's Prototype for Wind and Solar - Capitol Lake Plaza June 3, 2010 - 3:22pm Addthis Lindsay Gsell What are the key facts? 80 photovoltaic (PV) solar energy system and two vertical wind turbines will produce up to 40 percent of the building's total energy usage Capitol Lake Plaza sits centrally on Pierre, S.D.'s government plaza. Originally built in 1974, the building has been undergoing major energy renovations since being purchased by the state two years ago. Two major components of the renovation are about to appear at the building's highest point: solar panels and wind turbines are being installed on the roof. The 80 photovoltaic (PV) solar energy system and two vertical wind turbines will produce up to 40 percent of the building's total energy usage, says

Note: This page contains sample records for the topic "liquid argon prototype" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


261

Prototype Vector Machine for Large Scale Semi-Supervised Learning  

SciTech Connect (OSTI)

Practicaldataminingrarelyfalls exactlyinto the supervisedlearning scenario. Rather, the growing amount of unlabeled data poses a big challenge to large-scale semi-supervised learning (SSL). We note that the computationalintensivenessofgraph-based SSLarises largely from the manifold or graph regularization, which in turn lead to large models that are dificult to handle. To alleviate this, we proposed the prototype vector machine (PVM), a highlyscalable,graph-based algorithm for large-scale SSL. Our key innovation is the use of"prototypes vectors" for effcient approximation on both the graph-based regularizer and model representation. The choice of prototypes are grounded upon two important criteria: they not only perform effective low-rank approximation of the kernel matrix, but also span a model suffering the minimum information loss compared with the complete model. We demonstrate encouraging performance and appealing scaling properties of the PVM on a number of machine learning benchmark data sets.

Zhang, Kai; Kwok, James T.; Parvin, Bahram

2009-04-29T23:59:59.000Z

262

Design and Construction of Prototype Dark Matter Detectors  

SciTech Connect (OSTI)

The Lepton Quark Studies (LQS) group is engaged in searching for dark matter using the Dark Matter Time Projection Chamber (DMTPC) at the Waste Isolation Pilot Plant (WIPP) (Carlsbad, NM). DMTPC is a direction-sensitive dark matter detector designed to measure the recoil direction and energy deposited by fluorine nuclei recoiling from the interaction with incident WIMPs. In the past year, the major areas of progress have been: #15; to publish the #12;first dark matter search results from a surface run of the DMTPC prototype detector, #15; to build and install the 10L prototype in the underground laboratory at WIPP which will house the 1 m{sup 3} detector, and #15; to demonstrate charge and PMT readout of the TPC using prototype detectors, which allow triggering and #1;{Delta}z measurement to be used in the 1 m{sup 3} detector under development.

Peter Fisher

2012-03-23T23:59:59.000Z

263

Pollution prevention opportunity assessment for electronics prototype laboratory.  

SciTech Connect (OSTI)

This Pollution Prevention Opportunity Assessment (PPOA) was conducted for Sandia National Laboratories/California Electronics Prototype Laboratory (EPL) in May 2005. The primary purpose of this PPOA is to provide recommendations to assist Electronics Prototype Laboratory personnel in reducing the generation of waste and improving the efficiency of their processes. This report contains a summary of the information collected, analyses performed and recommended options for implementation. The Sandia National Laboratories Pollution Prevention staff will continue to work with the EPL to implement the recommendations.

Gerard, Morgan Evan

2005-10-01T23:59:59.000Z

264

Airflow induced vibration of the Si-IT prototype  

E-Print Network [OSTI]

In this note we present the results of air-flow induced vibration tests performed on mechanical prototypes of the Si option of the Inner Tracker upgrade. We made a modal analyze where we observed the eigenfrequency of the Si-ladder structure at ?30 Hz as previously measured at CERN. Flowing dry-air to cool the prototypes we do not observe a lock-in state of the vortex induced vibration (VIV). The maximum observed vibration amplitude is calculated. We conclude that the VIV excites the eigenfrequency almost independently from the air-flow speed, and with an amplitude which does not damage the structure.

Dijkstra, H; De Aguiar, V; Rigo, V

2014-01-01T23:59:59.000Z

265

Safetygram #9- Liquid Hydrogen  

Broader source: Energy.gov [DOE]

Hydrogen is colorless as a liquid. Its vapors are colorless, odorless, tasteless, and highly flammable.

266

Comparative Study of Laboratory-Scale and Prototypic Production-Scale Fuel Fabrication Processes and Product Characteristics  

SciTech Connect (OSTI)

Abstract – An objective of the High Temperature Gas Reactor fuel development and qualification program for the United States Department of Energy has been to qualify fuel fabricated in prototypic production-scale equipment. The quality and characteristics of the tristructural isotropic coatings on fuel kernels are influenced by the equipment scale and processing parameters. Some characteristics affecting product quality were suppressed while others have become more significant in the larger equipment. Changes to the composition and method of producing resinated graphite matrix material has eliminated the use of hazardous, flammable liquids and enabled it to be procured as a vendor-supplied feed stock. A new method of overcoating TRISO particles with the resinated graphite matrix eliminates the use of hazardous, flammable liquids, produces highly spherical particles with a narrow size distribution, and attains product yields in excess of 99%. Compact fabrication processes have been scaled-up and automated with relatively minor changes to compact quality to manual laboratory-scale processes. The impact on statistical variability of the processes and the products as equipment was scaled are discussed. The prototypic production-scale processes produce test fuels that meet fuel quality specifications.

Douglas W. Marshall

2014-10-01T23:59:59.000Z

267

Design, construction, operation and evaluation of a prototype culm combustion boiler/heater unit. Final design of prototype unit  

SciTech Connect (OSTI)

A final design of a prototype anthracite culm combustion boiler has been accomplished under Phase I of DOE Contract ET-78-C-01-3269. The prototype boiler has been designed to generate 20,000 pounds per hour of 150 psig saturated steam using low Btu (4000 Btu per pound) anthracite culm as a fuel. This boiler will be located at the industrial park of the Shamokin Area Industrial Corporation (SAIC). This program is directed at demonstrating the commercial viability of anthracite culm fueled FBC steam generation systems.

Not Available

1980-10-01T23:59:59.000Z

268

SAE INDIA 0301007 Virtual Prototype of Rack and Pinion Steering  

E-Print Network [OSTI]

SAE INDIA 0301007 Virtual Prototype of Rack and Pinion Steering Gear Meshing Naresh Kamble, S K. Gurgaon, India Copyright©2003 SAE International ABSTRACT Rack and pinion steering gear being compact on individual components (such as PCD run out of pinion, rack bend) are maintained within close tolerances

Saha, Subir Kumar

269

PROTOTYPE MIXED-SIGNAL HARDWARE PUBLIC SAFETY RADIO INTEROPERABILITY  

E-Print Network [OSTI]

PROTOTYPE MIXED-SIGNAL HARDWARE FOR PUBLIC SAFETY RADIO INTEROPERABILITY BY TIMOTHY EDWOOD BOND levels of my life and education. "... that in all things he [Christ] might have the preeminence Mixed-Signal Hardware Audio Baseband Switch Approach..................................8 II. BACKGROUND

New Hampshire, University of

270

Constraint-Based Motion Planning for Virtual Prototyping Maxim Garber  

E-Print Network [OSTI]

]: Computational Geometry and Object Modeling; I.6 [Computing Methodologies]: Simulation and Mod- eling General prototyping. Our approach trans- forms the motion planning problem into the simulation of a dy- namical system a collision free path. We demonstrate its effec- tiveness for parts removal, automated car painting

North Carolina at Chapel Hill, University of

271

Prototypical Implementation of Location-Aware Services based on a  

E-Print Network [OSTI]

without a built-in power supply) in large quantities and in a highly redundant fashion over large areas (ARCS '06) in Frankfurt am Main, Germany. #12;2 J. Bohn benefits and first prototypical results. The practical relevance of this concept is reflected in the recent appearance of industrial products that make

272

Color Rapid Prototyping for Diffusion-Tensor MRI Visualization  

E-Print Network [OSTI]

. Laidlaw, Christopher W. Bull Brown University, Providence, RI 02912, USA a) b) c) Fig. 1. (a,b) A plaster color rapid prototyping (RP) plaster mod- els as visualization tools to support scientific research by the printer software. These layers are then manufactured by putting down a thin layer of plaster powder

Laidlaw, David

273

MATLAB tensor classes for fast algorithm prototyping : source code.  

SciTech Connect (OSTI)

We present the source code for three MATLAB classes for manipulating tensors in order to allow fast algorithm prototyping. A tensor is a multidimensional or Nway array. This is a supplementary report; details on using this code are provided separately in SAND-XXXX.

Bader, Brett William; Kolda, Tamara Gibson (Sandia National Laboratories, Livermore, CA)

2004-10-01T23:59:59.000Z

274

UDC Develops Prototype High-Efficiency OLED Undercabinet Luminaire  

Broader source: Energy.gov [DOE]

Universal Display Corporation (UDC) has demonstrated the real-world application of a novel lighting technology by developing two pre-prototype OLED undercabinet lighting systems that exceed 420 total lumens at an efficacy of more than 55 lm/W, with an estimated lifetime (LT70) in excess of 10,000 hours, and a color rendering index (CRI) greater than 85.

275

A prototype classifier based on gravitational search algorithm  

Science Journals Connector (OSTI)

In recent years, heuristic algorithms have been successfully applied to solve clustering and classification problems. In this paper, gravitational search algorithm (GSA) which is one of the newest swarm based heuristic algorithms is used to provide a ... Keywords: Classification, Gravitational search algorithm, Prototype classifier, Swarm intelligence, UCI machine learning repository

Abbas Bahrololoum; Hossein Nezamabadi-pour; Hamid Bahrololoum; Masoud Saeed

2012-02-01T23:59:59.000Z

276

Evaluation of database technologies for the CTBT Knowledge Base prototype  

SciTech Connect (OSTI)

This document examines a number of different software technologies in the rapidly changing field of database management systems, evaluates these systems in light of the expected needs of the Comprehensive Test Ban Treaty (CTBT) Knowledge Base, and makes some recommendations for the initial prototypes of the Knowledge Base. The Knowledge Base requirements are examined and then used as criteria for evaluation of the database management options. A mock-up of the data expected in the Knowledge Base is used as a basis for examining how four different database technologies deal with the problems of storing and retrieving the data. Based on these requirement and the results of the evaluation, the recommendation is that the Illustra database be considered for the initial prototype of the Knowledge Base. Illustra offers a unique blend of performance, flexibility, and features that will aid in the implementation of the prototype. At the same time, Illustra provides a high level of compatibility with the hardware and software environments present at the US NDC (National Data Center) and the PIDC (Prototype International Data Center).

Keyser, R.; Shepard-Dombroski, E.; Baur, D.; Hipp, J.; Moore, S.; Young, C.; Chael, E.

1996-11-01T23:59:59.000Z

277

Hardware Prototyping of Two-Way Relay Systems  

E-Print Network [OSTI]

In this thesis, I conduct the hardware prototyping of a two-way relay system using the National Instruments FlexRIO hardware platform. First of all, I develop several practical mechanisms to solve the critical synchronization issues of the systems...

Wu, Qiong

2012-10-19T23:59:59.000Z

278

Solution nebulization into a low-power argon microwave-induced plasma for atomic emission spectrometry: study of synthetic ocean water  

Science Journals Connector (OSTI)

Solution nebulization into a low-power argon microwave-induced plasma for atomic emission spectrometry: study of synthetic ocean water ...

Kin C. Ng; Wei Lung Shen

1986-08-01T23:59:59.000Z

279

The Physics Analysis of a Gas Attenuator with Argon as a Working Gas  

SciTech Connect (OSTI)

A gas attenuator is an important element of the LCLS facility. The attenuator must operate in a broad range of x-ray energies, provide attenuation coefficient between 1 and 10{sup 4} with the accuracy of 1% and, at the same time, be reliable and allow for many months of un-interrupted operation. S. Shen has recently carried out a detailed design study of the attenuator based on the use of nitrogen as a working gas. In this note we assess the features of the attenuator based on the use of argon. We concentrate on the physics issues, not the design features.

Ryutov,, D.D.

2010-12-07T23:59:59.000Z

280

A comparative numerical study of hybrid-stabilized argon–water electric arc  

Science Journals Connector (OSTI)

The paper presents numerical simulations of the discharge and the near-outlet regions of the hybrid-stabilized argon–water electric arc. Two different numerical methods for solving the set of conservative equations for the continuity, momentum and energy have been applied. The major difference between the results using the two methods occurs in the temperature distribution in arc fringes within the discharge chamber. This fact influences the potential drop, overpressure, reabsorption of radiation and arc efficiency. It is shown that the radial profiles of temperature at the exit nozzle are less influenced by different temperature distribution within the discharge chamber. Comparison with chosen experimental temperature profiles shows very good agreement.

Ji?í Jeništa; Hidemasa Takana; Hideya Nishiyama; Milada Bartlová; Vladimír Aubrecht; Petr K?enek; Viktor Sember; Alan Mašláni

2011-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "liquid argon prototype" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


281

Heat flux characteristics in an atmospheric double arc argon plasma jet  

SciTech Connect (OSTI)

In this study, the axial evolution of heat flux excited by a double arc argon plasma jet impinging on a flat plate is determined, while the nonstationary behavior of the heat flux is investigated by combined means of the fast Fourier transform, Wigner distribution, and short-time Fourier transform. Two frequency groups (<1 and 2-10 kHz) are identified in both the Fourier spectrum and the time-frequency distributions, which suggest that the nature of fluctuations in the heat flux is strongly associated with the dynamic behavior of the plasma arc and the engulfment of ambient air into different plasma jet regions.

Tu Xin; Yu Liang; Yan Jianhua; Cen Kefa [Zhejiang University, Hangzhou 310027 (China); Cheron, Bruno [UMR 6614 CNRS CORIA, Saint Etienne du Rouvray 76801 (France)

2008-10-13T23:59:59.000Z

282

Atmospheric-pressure argon/oxygen plasma-discharge source with a stepped electrode  

SciTech Connect (OSTI)

The nonequilibrium glow discharge in argon mixed with oxygen at atmospheric pressure was generated in a parallel plate reactor with a stepped electrode powered by a 13.56 MHz radio-frequency power supplier. The stepped-electrode reactor consists of a narrow and wide gap structure. A strong electric field occurred at the narrow gap region preionizes Ar/O{sub 2} gas and assists to generate a large volumetric plasma in the wide gap region. Therefore, the stepped-electrode reactor makes it easy to operate Ar/O{sub 2} glow discharge, providing a stable, uniform, and broad plasma jet at atmospheric pressure.

Lim, Jin-Pyo; Uhm, Han S.; Li Shouzhe [Department of Molecular Science and Technology, Ajou University, San 5 Wonchon-Dong, Youngtong-Gu, Suwon 443-749 (Korea, Republic of); State Key Laboratory of Materials Modification by Laser, Ion and Electron Beams and Department of Physics, Dalian University of Technology, Dalian 116024 (China)

2007-01-29T23:59:59.000Z

283

Spectroscopic study of a long high-electron-density argon plasma column generated at atmospheric pressure  

SciTech Connect (OSTI)

A stable plasma column is generated in a quartz tube using a pair of hollow electrodes driven by a sinusoidal power supply of 45 kHz at atmospheric pressure in argon. Two distinct operating modes (low-current and high-current modes) are identified through observing its discharge phenomena, measuring its electrical characteristics, and determining the gas temperatures by spectroscopic diagnosis of Q branch of UV OH spectrum. The electron density in the high-current mode is diagnosed by Stark broadening and is found to be two orders higher than that in low-current mode.

Li Shouzhe; Huang Wentong; Wang Dezhen [Key Laboratory of Materials Modification by Laser, Ion and Electron Beams (Dalian University of Technology), Ministry of Education, and School of Physics and Optoelectronic Technology, Dalian University of Technology, Dalian 116023 (China)

2010-02-15T23:59:59.000Z

284

Nuclear recoil correction to the g factor of boron-like argon  

E-Print Network [OSTI]

The nuclear recoil effect to the g factor of boron-like ions is investigated. The one-photon-exchange correction to the nuclear recoil effect is calculated in the non-relativistic approximation for the nuclear recoil operator and in the Breit approximation for the interelectronic-interaction operator. The screening potential is employed to estimate the higher-order contributions. The updated g-factor values are presented for the ground 2P_1/2 and first excited 2P_3/2 states of B-like argon 40^Ar^13+, which are presently being measured by the ARTEMIS group at GSI.

Shchepetnov, Arseniy A; Volotka, Andrey V; Shabaev, Vladimir M; Tupitsyn, Ilya I; Plunien, Guenter

2014-01-01T23:59:59.000Z

285

Liquid level detector  

DOE Patents [OSTI]

A liquid level detector for low pressure boilers. A boiler tank, from which apor, such as steam, normally exits via a main vent, is provided with a vertical side tube connected to the tank at the desired low liquid level. When the liquid level falls to the level of the side tube vapor escapes therethrough causing heating of a temperature sensitive device located in the side tube, which, for example, may activate a liquid supply means for adding liquid to the boiler tank. High liquid level in the boiler tank blocks entry of vapor into the side tube, allowing the temperature sensitive device to cool, for example, to ambient temperature.

Grasso, Albert P. (Vernon, CT)

1986-01-01T23:59:59.000Z

286

Liquid level detector  

DOE Patents [OSTI]

A liquid level detector for low pressure boilers. A boiler tank, from which vapor, such as steam, normally exits via a main vent, is provided with a vertical side tube connected to the tank at the desired low liquid level. When the liquid level falls to the level of the side tube vapor escapes therethrough causing heating of a temperature sensitive device located in the side tube, which, for example, may activate a liquid supply means for adding liquid to the boiler tank. High liquid level in the boiler tank blocks entry of vapor into the side tube, allowing the temperature sensitive device to cool, for example, to ambient temperature.

Grasso, A.P.

1984-02-21T23:59:59.000Z

287

CX-010395: Categorical Exclusion Determination  

Broader source: Energy.gov [DOE]

A 35 Ton Liquid Argon Prototype Detector Will Be Built in Building PC-4 as a Prototype Detector for the Long Baseline Neutrino Experiment CX(s) Applied: B3.6 Date: 04/12/2012 Location(s): Illinois Offices(s): Fermi Site Office

288

Theoretical investigation of the effect of hydrogen addition on the formation and properties of soliton in direct current argon plasma  

SciTech Connect (OSTI)

In this study the effect of hydrogen addition on the formation and properties of soliton in direct-current (DC) argon plasma is theoretically investigated. By coupling fluid equations with Poisons equation for such multi-component plasma, the Mach number and amplitude of the soliton are determined following pseudo potential method. Addition of hydrogen in argon discharge leads to the decrease of electron, Ar{sup +} ion density while a reverse trend was observed for ArH{sup +} and hydrogen like ions. It was found that presence of hydrogen like ions in argon plasma affects the formation of soliton with its amplitude significantly decreases as concentration of hydrogen increases. On the other hand, increase in ion to electron temperature ratios of the lighter ions in the discharge also has a significant influence on the amplitude and formation of soliton. The inverse relation between solitons width and amplitude is found to be consistent for the entire range of study.

Saikia, P., E-mail: partha.008@gmail.com; Goswami, K. S.; Saikia, B. K. [Centre of Plasma Physics, Institute for Plasma Research, Nazirakhat, Sonapur, Kamrup, Assam-782 402 (India)] [Centre of Plasma Physics, Institute for Plasma Research, Nazirakhat, Sonapur, Kamrup, Assam-782 402 (India)

2014-03-15T23:59:59.000Z

289

Comparison of surface vacuum ultraviolet emissions with resonance level number densities. I. Argon plasmas  

SciTech Connect (OSTI)

Vacuum ultraviolet (VUV) photons emitted from excited atomic states are ubiquitous in material processing plasmas. The highly energetic photons can induce surface damage by driving surface reactions, disordering surface regions, and affecting bonds in the bulk material. In argon plasmas, the VUV emissions are due to the decay of the 1s{sub 4} and 1s{sub 2} principal resonance levels with emission wavelengths of 104.8 and 106.7?nm, respectively. The authors have measured the number densities of atoms in the two resonance levels using both white light optical absorption spectroscopy and radiation-trapping induced changes in the 3p{sup 5}4p?3p{sup 5}4s branching fractions measured via visible/near-infrared optical emission spectroscopy in an argon inductively coupled plasma as a function of both pressure and power. An emission model that takes into account radiation trapping was used to calculate the VUV emission rate. The model results were compared to experimental measurements made with a National Institute of Standards and Technology-calibrated VUV photodiode. The photodiode and model results are in generally good accord and reveal a strong dependence on the neutral gas temperature.

Boffard, John B., E-mail: jboffard@wisc.edu; Lin, Chun C. [Department of Physics, University of Wisconsin, Madison, WI 53706 (United States); Culver, Cody [Materials Science Program, University of Wisconsin, Madison, WI 53706 (United States); Wang, Shicong; Wendt, Amy E. [Department of Electrical and Computer Engineering, University of Wisconsin, Madison, WI 53706 (United States); Radovanov, Svetlana; Persing, Harold [Varian Semiconductor Equipment, Applied Materials Inc., Gloucester, MA 01939 (United States)

2014-03-15T23:59:59.000Z

290

Argon–oxygen dc magnetron discharge plasma probed with ion acoustic waves  

SciTech Connect (OSTI)

The precise determination of the relative concentration of negative ions is very important for the optimization of magnetron sputtering processes, especially for those undertaken in a multicomponent background produced by adding electronegative gases, such as oxygen, to the discharge. The temporal behavior of an ion acoustic wave excited from a stainless steel grid inside the plasma chamber is used to determine the relative negative ion concentration in the magnetron discharge plasma. The phase velocity of the ion acoustic wave in the presence of negative ions is found to be faster than in a pure argon plasma, and the phase velocity increases with the oxygen partial pressure. Optical emission spectroscopy further confirms the increase in the oxygen negative ion density, along with a decrease in the argon positive ion density under the same discharge conditions. The relative negative ion concentration values measured by ion acoustic waves are compared with those measured by a single Langmuir probe, and a similarity in the results obtained by both techniques is observed.

Saikia, Partha, E-mail: partha.008@gmail.com; Saikia, Bipul Kumar; Goswami, Kalyan Sindhu [Centre of Plasma Physics, Institute for Plasma Research, Nazirakhat, Sonapur, Kamrup, Assam 782 402 (India); Phukan, Arindam [Madhabdev College, Narayanpur, Lakhimpur, Assam 784164 (India)

2014-05-15T23:59:59.000Z

291

Doppler Effect in Spectra of Positive Rays of Uniform Velocity in Argon, Neon, Helium  

Science Journals Connector (OSTI)

Ions of argon, neon, helium, formed in a low voltage arc have been accelerated to high speeds in a short electric field, forming beams of positive ions which all have the same energy. The spectra of the beams of positive rays of uniform energy observed in the direction of motion show a characteristic Doppler effect, with displaced lines fully as sharp as the rest lines. With the exception of the very intense ?3418 of neon, the arc lines of argon and neon have no Doppler effect, while the lines of the first spark spectrum are accompanied by sharp displaced lines only slightly less intense than the rest lines, whose separation corresponds accurately to the speeds acquired by singly charged ions in the accelerating field, for velocities 9000 to 28,000 volts and several lines of higher spark spectra were observed with displaced lines also corresponding to singly charged ions. Satisfactory observations are made at pressure about 5×10-3 mm, the intensity and sharpness of the displaced lines diminishing with increasing pressure. In helium, the arc lines show relatively faint displaced lines corresponding to singly charged ions; one spark line ?4686 was accompanied by a relatively intense displaced line, while the only other spark line observed, ?4541, had no Doppler effect.

Anna I. McPherson

1933-11-01T23:59:59.000Z

292

Numerical study on microwave-sustained argon discharge under atmospheric pressure  

SciTech Connect (OSTI)

A numerical study on microwave sustained argon discharge under atmospheric pressure is reported in this paper. The purpose of this study is to investigate both the process and effects of the conditions of microwave-excited gas discharge under atmospheric pressure, thereby aiding improvements in the design of the discharge system, setting the appropriate working time, and controlling the operating conditions. A 3D model is presented, which includes the physical processes of electromagnetic wave propagation, electron transport, heavy species transport, gas flow, and heat transfer. The results can be obtained by means of the fluid approximation. The maxima of the electron density and gas temperature are 4.96?×?10{sup 18} m{sup ?3} and 2514.8?K, respectively, and the gas pressure remains almost unchanged for typical operating conditions with a gas flow rate of 20 l/min, microwave power of 1000 W, and initial temperature of 473?K. In addition, the conditions (microwave power, gas flow rate, and initial temperature) of discharge are varied to obtain deeper information about the electron density and gas temperature. The results of our numerical study are valid and clearly describe both the physical process and effects of the conditions of microwave-excited argon discharge.

Yang, Y.; Hua, W., E-mail: huaw@scu.edu.cn; Guo, S. Y. [School of Electronics and Information Engineering, Sichuan University, Chengdu 610065 (China)] [School of Electronics and Information Engineering, Sichuan University, Chengdu 610065 (China)

2014-04-15T23:59:59.000Z

293

Viscosity, specific (for liquids)  

Science Journals Connector (OSTI)

n. The ratio between the viscosity of a liquid and the viscosity of water at the same temperature. Specific viscosity is sometimes used interchangeably with relative viscosity for liquids.

2007-01-01T23:59:59.000Z

294

Liquid Piston Stirling Engines  

Science Journals Connector (OSTI)

The Fluidyne liquid piston engine is a simple free-piston Stirling engine that can be made from nothing more...

Graham Walker Ph. D.; J. R. Senft Ph.D.

1985-01-01T23:59:59.000Z

295

Observation of two-dimensional compositional ordering of a carbon monoxide and argon monolayer mixture physisorbed on graphite  

SciTech Connect (OSTI)

Commensurate monolayers of a mixture of 70% carbon monoxide and 30% argon on graphite are studied by neutron and low-energy-electron diffraction. A 2 x 2 superstructure due to 3:1 compositional ordering is observed below 25 K. The compositional ordering is most likely due to molecular-axis ordering of carbon monoxide molecules into a pinwheel pattern with argon atoms at the central sites of each pinwheel. Such a pinwheel structure has been predicted by Harris, Mouritsen, and Berlinsky for planar rotors with anisotropic interactions on a triangular lattice with vacancies.

You, H.; Fain, S.C. Jr.; Satija, S.; Passell, L.

1986-01-20T23:59:59.000Z

296

MHK Projects/WavePlane Prototype 1 | Open Energy Information  

Open Energy Info (EERE)

WavePlane Prototype 1 WavePlane Prototype 1 < MHK Projects Jump to: navigation, search << Return to the MHK database homepage Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":5,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"500px","height":"350px","centre":false,"title":"","label":"","icon":"File:Aquamarine-marker.png","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":57.1343,"lon":8.60719,"alt":0,"address":"","icon":"http:\/\/prod-http-80-800498448.us-east-1.elb.amazonaws.com\/w\/images\/7\/74\/Aquamarine-marker.png","group":"","inlineLabel":"","visitedicon":""}]}

297

NETL: Gasification Systems - Development of Prototype Commercial Gasifier  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Development of Prototype Commercial Gasifier Sensor Development of Prototype Commercial Gasifier Sensor Project No.: DE-FE0008350 Gas Technology Institute (GTI) is developing a reliable, practical, and cost effective means to monitor coal gasifier flame characteristics using an optical flame sensor. This project builds on GTI's sensor technology developed under the "Real Time Flame Monitoring of Gasifier Burner and Injectors" DE-FC26-02NT41585 and is focused on the sensor hardware modifications needed to; provide gasifier operators with real time temperature data, improve reliability of the sensor system. Long term (six months) testing will be performed to determine sensor accuracy and reliability. An evaluation will be performed to determine the commercial viability of the sensor system.

298

High power density test of PXIE MEBT absorber prototype  

E-Print Network [OSTI]

One of the goals of the PXIE program at Fermilab is to demonstrate the capability to form an arbitrary bunch pattern from an initially CW 162.5 MHz H- bunch train coming out of an RFQ. The bunch-by-bunch selection will take place in the 2.1 MeV Medium Energy Beam Transport (MEBT) by directing the undesired bunches onto an absorber that needs to withstand a beam power of up to 21 kW, focused onto a spot with a ~2 mm rms radius. Two prototypes of the absorber were manufactured from molybdenum alloy TZM and tested with a 28 keV DC electron beam up to the peak surface power density required for PXIE, 17W/mm2. Temperatures and flow parameters were measured and compared to analysis. This paper describes the absorber prototypes and key testing results.

Shemyakin, A

2015-01-01T23:59:59.000Z

299

Engineering Prototype for a Compact Medical Dielectric Wall Accelerator  

Science Journals Connector (OSTI)

A compact accelerator system architecture based on the dielectric wall accelerator (DWA) for medical proton beam therapy has been developed by the Compact Particle Acceleration Corporation (CPAC). The major subsystems are a Radio Frequency Quadrupole (RFQ) injector linac a pulsed kicker to select the desired proton bunches and a DWA linear accelerator incorporating a high gradient insulator (HGI) with stacked Blumleins to produce the required acceleration energy. The Blumleins are switched with solid state laser?driven optical switches integrated into the Blumlein assemblies. Other subsystems include a high power pulsed laser fiber optic distribution system electrical charging system and beam diagnostics. An engineering prototype has been constructed and characterized and these results will be used within the next three years to develop an extremely compact 150 MeV system capable of modulating energy beam current and spot size on a shot?to?shot basis. This paper presents the details the engineering prototype experimental results and commercialization plans.

Anthony Zografos; Andy Hening; Vladimir Joshkin; Kevin Leung; Dave Pearson; Henry Pearce?Percy; Mario Rougieri; Yoko Parker; John Weir; Donald Blackfield; Yu?Jiuan Chen; Steven Falabella; Gary Guethlein; Brian Poole; Robert W. Hamm; Reinard Becker

2011-01-01T23:59:59.000Z

300

Field Testing of Pre-Production Prototype Residential Heat Pump Water Heaters  

Broader source: Energy.gov [DOE]

Provides and overview of field testing of 18 pre-production prototype residential heat pump water heaters

Note: This page contains sample records for the topic "liquid argon prototype" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


301

Performance of ALICE pixel prototypes in high energy beams  

E-Print Network [OSTI]

The two innermost layers of the ALICE inner tracking system are instrumented with silicon pixel detectors. Single chip assembly prototypes of the ALICE pixels have been tested in high energy particle beams at the CERN SPS. Detection efficiency and spatial precision have been studied as a function of the threshold and the track incidence angle. The experimental method, data analysis and main results are presented.

D. Elia

2005-12-20T23:59:59.000Z

302

Two-dimensional laser-induced fluorescence imaging of metastable density in low-pressure radio frequency argon plasmas with added O2, Cl2,  

E-Print Network [OSTI]

frequency argon plasmas with added O2, Cl2, and CF4 Brian K. McMillina) and M. R. Zachariah Chemical Science, and CF4 on the argon metastable relative density and spatial distribution in low-pressure, radio at the powered electrode. In contrast, the addition of either Cl2 or CF4 was found to significantly modify

Zachariah, Michael R.

303

J. Phys. Chem. Solids. Pergamon Press 1966. Vol. 27, pp. 1659-1665. Printed in Great Britain. VACANCIES IN SOLID ARGON  

E-Print Network [OSTI]

. VACANCIES IN SOLID ARGON H. R. GLYDE University of Sussex School of Mathematical and Physical Sciences and entropy of vacancy creation in solid argon are re-evaluated using the two-body force approximation. At the triple point, the resulting vacancy free energy is g, = 1900 -4.0 RTcaljmole vat. This does not agree

Glyde, Henry R.

304

A Comparison of Two Prototype Laser-Optical Firing Systems  

SciTech Connect (OSTI)

The design and characterization of small, ruggedized laser-optical subsystems is required for the continued development of robust laser-optical firing systems. Typically, these subsystems must be capable of generating the needed laser optical energy, delivering that energy via fiber-optical cables while taking up occupying a volume as small as possible. A novel beam splitting and fiber injection scheme has been proposed which utilizes two diffractive optical components. These components were utilized to reduce the volume of a previously designed system. A laser-optical prototype system was assembled and tested which utilized this beam splitting and fiber injection scheme along other modifications to the laser module and the power supply. This prototype was based on earlier designs that utilized environmentally proven opto-mechanical sub-assemblies. The system was tested to characterize the laser performance, the splitter-coupler transmission efficiency, channel-to-channel energy balance and fiber interchangeability. The results obtained for this design will be compared to the performance of a prototype system based on a more traditional beam splitting and fiber injection scheme. The traditional design utilized partially reflecting mirrors for beam splitting and plano-convex lenses for fiber injection. These results will be discussed as will their ultimate impact on future designs and packaging strategies.

Gregg L. Morelli; Michelle R. Bright

2008-08-11T23:59:59.000Z

305

A new small Stirling engine prototype for auxiliary employments aboard  

SciTech Connect (OSTI)

The development of a small size Stirling engine as low power system for auxiliary employments aboard sailing boats or caravan still appears interesting. In previous papers the author presented the design, the prototype construction and the experimental tests of a monocylinder P-type configuration with the regenerator and part of the heat exchangers set on the displacer; the heat was irradiated by the head and it was removed by the water circulating through the rod of the displacer and around the cylinder. Considerable reductions in dead volume and global dimensions were obtained. At the same time, however, the weight of the heat exchanger regenerator displacer, mainly due to the cooler, kept the speed of revolution from increasing, with consequent limitation of specific power value; furthermore thermal insulation between hot and cold ends and displacer rod seals proved to be critical features as far as reliability is concerned. A new prototype has been developed adopting {gamma}-type configuration with stationary heat exchangers and with the displacer connecting rod linked to the crankshaft by means of an epicyclic train able to make its movement linear thus eliminating rod seal side loadings. The paper deals with the criteria followed with the design and the prototype construction; the adopted technical solutions are shown and discussed.

Bartolini, C.M.; Caresana, F. [Univ. di Ancona (Italy). Dipt. di Energetica

1995-12-31T23:59:59.000Z

306

THE PROTOTYPE OF RECORDING SYSTEM FOR SHOCK AND DETONATION WAVE INVESTIGATION WITH APPLICATION OF  

E-Print Network [OSTI]

THE PROTOTYPE OF RECORDING SYSTEM FOR SHOCK AND DETONATION WAVE INVESTIGATION WITH APPLICATION of the prototype of multichannel recording system for shock-wave and detonation processes investigations (first of all, shock-wave and detonation ones) [1, 2]. A prototype of recording system [3], providing

Fedotov, Mikhail G.

307

Design of a re-configurable test stand for a multi degree of freedom compliant robot prototype  

E-Print Network [OSTI]

A test stand was designed and constructed to compress a compliant robot prototype, while measuring the force applied and the displacement of the prototype's end. The prototype is a five degree of freedom, compliant device, ...

Klenk, Daniel E

2009-01-01T23:59:59.000Z

308

Shock Hugoniots of molecular liquids and the principle of corresponding states  

SciTech Connect (OSTI)

We observe that the shock velocity-particle velocity Hugoniots for various liquids (e.g. nitrogen, oxygen, carbon dioxide, argon) lie almost on top of one another. Recalling the work of Ross and Ree [J. Chem. Phys. 73, 6146-6152 (1980)], we hypothesize that these materials obey a principle of corresponding states. We use the principle to deduce how the Hugoniots of two corresponding materials should be related, and we compare the results with data and find good agreement. We suggest this as a method for estimating the Hugoniot of a material of the appropriate type in the absence of shock data, and we illustrate with fluorine.

Chisolm, Eric D [Los Alamos National Laboratory; Crockett, Scott D [Los Alamos National Laboratory; Shaw, Milton S [Los Alamos National Laboratory

2009-01-01T23:59:59.000Z

309

Liquid Wall Chambers  

SciTech Connect (OSTI)

The key feature of liquid wall chambers is the use of a renewable liquid layer to protect chamber structures from target emissions. Two primary options have been proposed and studied: wetted wall chambers and thick liquid wall (TLW) chambers. With wetted wall designs, a thin layer of liquid shields the structural first wall from short ranged target emissions (x-rays, ions and debris) but not neutrons. Various schemes have been proposed to establish and renew the liquid layer between shots including flow-guiding porous fabrics (e.g., Osiris, HIBALL), porous rigid structures (Prometheus) and thin film flows (KOYO). The thin liquid layer can be the tritium breeding material (e.g., flibe, PbLi, or Li) or another liquid metal such as Pb. TLWs use liquid jets injected by stationary or oscillating nozzles to form a neutronically thick layer (typically with an effective thickness of {approx}50 cm) of liquid between the target and first structural wall. In addition to absorbing short ranged emissions, the thick liquid layer degrades the neutron flux and energy reaching the first wall, typically by {approx}10 x x, so that steel walls can survive for the life of the plant ({approx}30-60 yrs). The thick liquid serves as the primary coolant and tritium breeding material (most recent designs use flibe, but the earliest concepts used Li). In essence, the TLW places the fusion blanket inside the first wall instead of behind the first wall.

Meier, W R

2011-02-24T23:59:59.000Z

310

Sliding Luttinger liquid phases  

Science Journals Connector (OSTI)

We study systems of coupled spin-gapped and gapless Luttinger liquids. First, we establish the existence of a sliding Luttinger liquid phase for a system of weakly coupled parallel quantum wires, with and without disorder. It is shown that the coupling can stabilize a Luttinger liquid phase in the presence of disorder. We then extend our analysis to a system of crossed Luttinger liquids and establish the stability of a non-Fermi-liquid state: the crossed sliding Luttinger liquid phase. In this phase the system exhibits a finite-temperature, long-wavelength, isotropic electric conductivity that diverges as a power law in temperature T as T?0. This two-dimensional system has many properties of a true isotropic Luttinger liquid, though at zero temperature it becomes anisotropic. An extension of this model to a three-dimensional stack exhibits a much higher in-plane conductivity than the conductivity in a perpendicular direction.

Ranjan Mukhopadhyay; C. L. Kane; T. C. Lubensky

2001-07-09T23:59:59.000Z

311

Retrofitting of Conditioning Systems for Existing Small Commercial Buildings - Analysis and Design of Liquid Desiccant - Vapor Compression Hybrid  

E-Print Network [OSTI]

RETROFITTING OF CONDITIONINC SYSTEMS FOR EXISTING SMALL COMMERCIAL BUILDINGS - ANALYSIS AND DESIGN OF LIQUID DESICCANT - VAPOR COMPRESSION HYBRID Ozer A. Arnas Professor Department of Mechanical Engineering Louisiana State University Baton... is combined with air heated passively in an attic to regenerate the desiccant. A prototype open-cycle, liquid desiccant dehumidification system has been adapted to the existing mechanical system of the building (Figure 1). Guidelines for retrofitting...

Arnas, O. A.; McQueen, T. M.

1984-01-01T23:59:59.000Z

312

Argon metastable densities in radio frequency Ar, Ar/O2 and Ar/CF4 electrical discharges  

E-Print Network [OSTI]

Argon metastable densities in radio frequency Ar, Ar/O2 and Ar/CF4 electrical discharges Shahid. In this article, we present results from a two-dimensional computer simulation of Ar, Ar/O2, and Ar/CF4 discharges in the ambipolar electric field resulting from electrode structures. Additions of small amounts of O2 and CF4

Kushner, Mark

313

Dynamics of plasma expansion and shockwave formation in femtosecond laser-ablated aluminum plumes in argon gas at atmospheric pressures  

E-Print Network [OSTI]

plasma expansion into a background gas at atmospheric pressure is cru- cial for many engineeringDynamics of plasma expansion and shockwave formation in femtosecond laser-ablated aluminum plumes in argon gas at atmospheric pressures Alexander Miloshevsky, Sivanandan S. Harilal, Gennady Miloshevsky

Harilal, S. S.

314

One and two photon optogalvanic spectroscopy of argon and neon for the wavelength calibration in the near infrared  

E-Print Network [OSTI]

in the near infrared Zhen Tang *, Richard B. Miles Department of Mechanical and Aerospace Engineering The one photon and two photon optogalvanic spectra of argon and neon have been investigated in the near infrared region between 735 and 781 nm. About 35 transitions have been recorded by illuminating a hollow

Miles, Richard

315

Complete 90.1 Prototype Building Model package | Building Energy Codes  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Complete 90.1 Prototype Building Model package Complete 90.1 Prototype Building Model package The ASHRAE Standard 90.1 prototype building models were developed by Pacific Northwest National Laboratory in support of the U.S. Department of Energy's (DOE's) Building Energy Codes Program. These prototype buildings were derived from DOE's Commercial Reference Building Models. This suite of ASHRAE Standard 90.1 prototype buildings covers all the Reference Building types except supermarket, and also adds a new building prototype representing high-rise apartment buildings.The prototype models include 16 building types in 17 climate locations for ASHRAE Standards 90.1-2004, 90.1-2007 and 90.1-2010. This combination leads to a set of 816 building models (in EnergyPlus Version 6.0). Also included is a scorecard for each

316

90.1 Prototype Building Models Full Service Restaurant | Building Energy  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

90.1 Prototype Building Models Full Service Restaurant 90.1 Prototype Building Models Full Service Restaurant The ASHRAE Standard 90.1 prototype building models were developed by Pacific Northwest National Laboratory in support of the U.S. Department of Energy's (DOE's) Building Energy Codes Program. These prototype buildings were derived from DOE's Commercial Reference Building Models. This suite of ASHRAE Standard 90.1 prototype buildings covers all the Reference Building types except supermarket, and also adds a new building prototype representing high-rise apartment buildings.The prototype models include 16 building types in 17 climate locations for ASHRAE Standards 90.1-2004, 90.1-2007 and 90.1-2010. This combination leads to a set of 816 building models (in EnergyPlus Version 6.0). Also included is a scorecard for each

317

Study of non-thermal plasma jet with dielectric barrier configuration in nitrogen and argon  

Science Journals Connector (OSTI)

Dielectric barrier discharge (DBD) is advantageous in generating non-thermal plasma at atmospheric pressure as it avoids transition to thermal arc and dispenses with costly vacuum system. It has found useful applications in treating heat-sensitive materials such as plastics and living tissue. In this work the discharge formed between the Pyrex glass layer and the ground electrode is extruded through a nozzle to form the non-thermal plasma jet. The DBD characteristics were investigated in terms of charge transferred and mean power dissipated per cycle when operated in nitrogen and argon at various flow rates and applied voltages. These characteristics were then correlated to the dimension of the plasma jet. The mean power dissipated in the DBD was below 7 W giving an efficiency of 17 %. The length of the plasma jet was greatly limited to below 1 cm due to the configuration of the DBD system and nozzle.

O. H. Chin

2014-01-01T23:59:59.000Z

318

Generation of Cold Argon Plasma Jet at the End of Flexible Plastic Tube  

E-Print Network [OSTI]

This brief communication reports a new method for generation of cold atmospheric pressure plasma jet at the downstream end of a flexible plastic tube. The device consists of a small chamber where dielectric barrier discharge (DBD) is ignited in Argon. The discharge is driven by a conventional low frequency AC power supply. The exit of DBD reactor is connected to a commercial flexible plastic tube (up to 4 meters long) with a thin floating Cu wire inside. Under certain conditions an Ar plasma jet can be extracted from the downstream tube end and there is no discharge inside the plastic tube. The jet obtained by this method is cold enough to be put in direct contact with human skin without electric shock and can be used for medical treatment and decontamination.

Kostov, Konstantin G; Prysiazhnyi, Vadym

2014-01-01T23:59:59.000Z

319

Operating characteristics of a hydrogen-argon plasma torch for supersonic combustion applications  

SciTech Connect (OSTI)

The residence time of the combustible mixture in the combustion chamber of a scramjet engine is much less than the time normally required for complete combustion. Hydrogen and hydrocarbon fuels require an ignition source under conditions typically found in a scramjet combustor. Analytical studies indicate that the presence of hydrogen atoms should greatly reduce the ignition delay in this environment. Because hydrogen plasmas are prolific sources of hydrogen atoms, a low-power, uncooled hydrogen plasma torch has been built and tested to evaluate its potential as a possible flame holder for supersonic combustion. The torch was found to be unstable when operated on pure hydrogen; however, stable operation could be obtained by using argon as a body gas and mixing in the desired amount of hydrogen. The stability limits of the torch are delineated and its electrical and thermal behavior documented. An average torch thermal efficiency of around 88 percent is demonstrated. 10 references.

Barbi, E.; Mahan, J.R.; O'brien, W.F.; Wagner, T.C.

1989-04-01T23:59:59.000Z

320

Photoelectron satellite spectrum in the region of the 3s Cooper minimum of argon  

Science Journals Connector (OSTI)

The 3s,3p satellite spectrum of argon has been studied with use of synchrotron radiation in the 40–70-eV energy range. In the region of the 3s Cooper minimum (42.5 eV±0.2), the integral intensity of the satellites is ten times larger than the 3s partial cross section. The angular asymmetry parameters have been measured as a function of the photoelectron energy for the 3s 2S,3p 2P final states as well as for the satellites. For the lowest photon energies it appears that the ? parameter values of the most intense satellites are strongly dependent on the total angular momentum of the final ionic state.

M. Y. Adam, P. Morin, and G. Wendin

1985-03-01T23:59:59.000Z

Note: This page contains sample records for the topic "liquid argon prototype" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


321

Energy spectrum of argon ions emitted from Filippov type Sahand plasma focus  

SciTech Connect (OSTI)

The energy and flux of the argon ions produced in Sahand plasma focus have been measured by employing a well-designed Faraday cup. The secondary electron emission effects on the ion signals are simulated and the dimensions of Faraday cup are optimized to minimize these effects. The measured ion energy spectrum is corrected for the ion energy loss and charge exchange in the background gas. The effects of the capacitor bank voltage and working gas pressure on the ion energy spectrum are also investigated. It has been shown that the emitted ion number per energy increases as the capacitor bank voltage increases. Decreasing the working gas pressure leads to the increase in the number of emitted ion per energy.

Mohammadnejad, M.; Pestehe, S. J.; Mohammadi, M. A. [Department of Atomic and Molecular Physics, Faculty of Physics, University of Tabriz, Postal Code 5166614766, Tabriz (Iran, Islamic Republic of) [Department of Atomic and Molecular Physics, Faculty of Physics, University of Tabriz, Postal Code 5166614766, Tabriz (Iran, Islamic Republic of); Research Institute for Applied Physics and Astronomy, University of Tabriz, Tabriz (Iran, Islamic Republic of)

2013-07-15T23:59:59.000Z

322

Energy Loss and Charge Transfer of Argon in a Laser-Generated Carbon Plasma  

Science Journals Connector (OSTI)

This Letter reports on the measurement of the energy loss and the projectile charge states of argon ions at an energy of 4??MeV/u penetrating a fully ionized carbon plasma. The plasma of ne?1020??cm-3 and Te?180??eV is created by two laser beams at ?Las=532??nm incident from opposite sides on a thin carbon foil. The resulting plasma is spatially homogenous and allows us to record precise experimental data. The data show an increase of a factor of 2 in the stopping power which is in very good agreement with a specifically developed Monte Carlo code, that allows the calculation of the heavy ion beam’s charge state distribution and its energy loss in the plasma.

A. Frank, A. Blaževi?, V. Bagnoud, M. M. Basko, M. Börner, W. Cayzac, D. Kraus, T. Heßling, D. H. H. Hoffmann, A. Ortner, A. Otten, A. Pelka, D. Pepler, D. Schumacher, An. Tauschwitz, and M. Roth

2013-03-12T23:59:59.000Z

323

Theoretical investigation of thermophysical properties in two-temperature argon-helium thermal plasma  

Science Journals Connector (OSTI)

The thermophysical properties of argon-helium thermal plasma have been studied in the temperature range from 5000 to 40 000 K at atmospheric pressure in local thermodynamic equilibrium and non-local thermodynamic equilibrium conditions. Two cases of thermal plasma considered are (i) ground state plasma in which all the atoms and ions are assumed to be in the ground state and (ii) excited stateplasma in which atoms and ions are distributed over various possible excited states. The influence of electronic excitation and non-equilibrium parameter ??=?Te/Th on thermodynamic properties (composition degree of ionization Debye length enthalpy and total specific heat) and transport properties(electrical conductivity electron thermal conductivity and thermal diffusion ratio) have been studied. Within the framework of Chapman-Enskog method the higher-order contributions to transport coefficient and their convergence are studied. The influence of different molar compositions of argon-helium plasma mixture on convergence of higher-orders is investigated. Furthermore the effect of different definitions of Debye length has also been examined for electrical conductivity and it is observed that electrical conductivity with the definition of Debye length (in which only electrons participate in screening) is less than that of the another definition (in which both the electrons and ions participate in screening) and this deviation increases with electron temperature. Finally the effect of lowering of ionization energy is examined on electron number density Debye length and higher-order contribution to electrical conductivity. It is observed that the lowering of the ionization energy affects the electron transport-properties and consequently their higher-order contributions depending upon the value of the non-equilibrium parameter ?.

Rohit Sharma; Gurpreet Singh; Kuldip Singh

2011-01-01T23:59:59.000Z

324

Theoretical investigation of thermophysical properties in two-temperature argon-helium thermal plasma  

SciTech Connect (OSTI)

The thermophysical properties of argon-helium thermal plasma have been studied in the temperature range from 5000 to 40 000 K at atmospheric pressure in local thermodynamic equilibrium and non-local thermodynamic equilibrium conditions. Two cases of thermal plasma considered are (i) ground state plasma in which all the atoms and ions are assumed to be in the ground state and (ii) excited state plasma in which atoms and ions are distributed over various possible excited states. The influence of electronic excitation and non-equilibrium parameter {theta} = T{sub e}/T{sub h} on thermodynamic properties (composition, degree of ionization, Debye length, enthalpy, and total specific heat) and transport properties (electrical conductivity, electron thermal conductivity, and thermal diffusion ratio) have been studied. Within the framework of Chapman-Enskog method, the higher-order contributions to transport coefficient and their convergence are studied. The influence of different molar compositions of argon-helium plasma mixture on convergence of higher-orders is investigated. Furthermore, the effect of different definitions of Debye length has also been examined for electrical conductivity and it is observed that electrical conductivity with the definition of Debye length (in which only electrons participate in screening) is less than that of the another definition (in which both the electrons and ions participate in screening) and this deviation increases with electron temperature. Finally, the effect of lowering of ionization energy is examined on electron number density, Debye length, and higher-order contribution to electrical conductivity. It is observed that the lowering of the ionization energy affects the electron transport-properties and consequently their higher-order contributions depending upon the value of the non-equilibrium parameter {theta}.

Sharma, Rohit; Singh, Kuldip [Department of Physics, Guru Nanak Dev University, Amritsar (India); Singh, Gurpreet [Department of Physics, DAV College, Bathinda (India)

2011-08-15T23:59:59.000Z

325

Experiment and Numerical Simulation of Bubble Behaviors in Argon Gas Injection Into Lead-Bismuth Pool  

SciTech Connect (OSTI)

In a lead-bismuth alloy (45%Pb-55%Bi) cooled direct contact boiling water fast reactor (PBWFR), steam can be produced by direct contact of feed water with primary Pb-Bi coolant in the upper core plenum, and Pb-Bi coolant can be circulated by buoyancy forces of steam bubbles. As a basic study to investigate the two-phase flow characteristics in the chimneys of PBWFR, a two-dimensional two-phase flow was simulated by injecting argon gas into Pb-Bi pool in a rectangular vessel (400 mm in length, 1500 mm in height, 50 mm in width), and bubble behaviors were investigated experimentally. Bubble sizes, bubble rising velocities and void fractions were measured using void probes. Argon gas was injected through five nozzles of 4 mm in diameter into Pb-Bi at two locations. The experimental conditions are the pressure of atmospheric pressure, Pb-Bi temperatures of 443 K, and the flow rate of injection Ar gas is 10, 20, and 30 NL/min. The measured bubble rising velocities were distributed in the range from 1 to 3 m/s. The average velocity was about 0.6 m/s. The measured bubble chord lengths were distributed from 1 mm up to 30 mm. The average chord length was about 7 mm. An analysis was performed by two-dimensional and two-fluid model. The experimental results were compared with the analytical results to evaluate the validity of the analytical model. Although large diameter bubbles were observed in the experiment, the drag force model for spherical bubbles performed better for simulation of the experimental result because of high surface tension force of Pb-Bi. (authors)

Yumi Yamada [Advanced Reactor Technology Company, Ltd. (Japan); Toyou Akashi; Minoru Takahashi [Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8550 (Japan)

2006-07-01T23:59:59.000Z

326

Spectroscopic diagnostics of a pulsed discharge in high-pressure argon  

SciTech Connect (OSTI)

Results of investigation of high-pressure argon plasma excited by a high-current pulsed volume discharge are presented. The plasma diagnostics employs spatiotemporal dependences of the emission intensity in the VUV - visible range. A homogenous discharge is observed at pressures up to 10 atm. It is found that the spectrum of the UV - visible photorecombination continuum is sensitive to the discharge constriction. Change in the shape of the spectrum is caused bythe change of the type of positive charge carriers upon passing of the discharge from the uniform phase (molecular Ar{sub 2}{sup +} ions) to the arc phase (atomic Ar{sup +} ions). Experimental data and model calculations show that the electron heating after the main excitation pulse is a highly undesirable process. It slows down the recombination flow in the plasma, which results in stretching of all the kinetic processes for all excited components in time, and hence in a decrease in the peak values of their concentrations. Electron collision-induced mixing effi-ciently converts the reservoir of long-lived Ar{sub 2}* molecules in the triplet state into rapidly emitting singlet excimers. It is this mechanism that dominates the production of singlet Ar{sub 2}* excimer molecules. The threshold concentration needed to obtain lasing at a wavelength of 127 nm on Ar{sub 2}* excimers ({sup 1{Sigma}+}{sub u(v=0)}) was, according to calculations, about 5x10{sup 15} cm{sup -3} for the gain 0.05 cm{sup -1}. This concentration can be achieved in the case of homogeneous pulsed discharge pumping with the peak electron concentration 2.x10{sup 16} cm{sup -3} at the argon pressure 10 atm.

Treshchalov, A B; Lissovskii, A A [Institute of Physics, University of Tartu, Tartu (Estonia)

2010-05-26T23:59:59.000Z

327

Investigation of magnetic-pole-enhanced inductively coupled nitrogen-argon plasmas  

SciTech Connect (OSTI)

This article presented the features of the mixed mode and H mode in magnetic pole enhanced, inductively coupled Ar-N{sub 2} plasmas using RF-compensated Langmuir probe measurements. To fully characterize plasma parameters and electron energy probability functions (EEPFs), the gas pressure and argon content were varied. It was observed that with increasing the nitrogen content and gas pressure, the critical RF power to sustain H mode increases; this increase was more prominent for pure nitrogen discharge at higher pressure. The electron number density (n{sub e}) shows increasing trend with increasing RF power, while at higher gas pressures, the electron number density decreases at fixed RF power. Mostly, the EEPFs show a Maxwellian distribution even at low RF power (for higher argon content in the discharge) and at moderate RF power (for higher or pure nitrogen content in the discharge) for pressures of 15-60 mTorr. With increasing the nitrogen content in the mixture, the low energy part of the EEPF is more Druyvesteyn with a distorted high energy tail at low RF power. At fixed RF power, the slope of EEPF changes sharply with increasing pressure. It was observed that in hybrid mode, the EEPF at higher gas pressure (75 mTorr) in a pure nitrogen discharge shows a flat hole near the average electron energy of 3 eV and changes to Maxwellian distribution in H mode. The skin depth versus RF power shows that the skin depth is smaller than the critical dimension of the chamber, regardless of the gas type and the gas pressure.

Jan, F.; Zakaullah, M. [Department of Physics, Quaid-i-Azam University Islamabad, Islamabad 45320 (Pakistan); Khan, A. W.; Saeed, A. [National Centre for Physics, Quaid-i-Azam University Campus Islamabad, Islamabad 45320 (Pakistan)

2012-09-15T23:59:59.000Z

328

A virtual prototype for an explosives detection system  

SciTech Connect (OSTI)

The development of the resonance-absorption based explosives detection system (EDS), as initially planned, involved the parallel development of a high-current proton accelerator (with a long development time) and the other detection subsystems. The design approach for the latter was to develop a capability for computer modeling the essential processes of each subsystem, benchmark these models by experiment, and link the models, i.e., creating a virtual prototype, to explore the effect of subsystem design changes on the EDS system performance. Additionally, when the EDS prototype system was completed, the linked models would be used to investigate further trade-offs in defining an airport system. Most of the necessary subsystem modeling was completed and used in subsystem design. Linking of all of the subsystems was accomplished to some degree or another. There are many physical and mathematical processes that take place between the acceleration of the proton beam and the final display of the reconstructed image. Figure 1 summarizes these processes and indicates which code was used to model each particular process. Section II reports on the modeling of the proton beam incident on a {sup 13}C target. The gamma-ray output is the desired output from this phase of modeling. Section III describes the tools used to investigate the transport of the gamma-rays through computer simulated phantoms (suitcases). Two different codes were used in this investigation: a Monte Carlo photon transport code and a ray tracing code. One benchmark between these codes was accomplished. Section IV is concerned with the model calculations performed on single detectors. The calculations again were performed with a Monte Carlo transport code. The reconstruction code, used throughout in the simulations and as the workhorse in the analysis of the real experiments. The authors conclude, in Section VII, with the assessment of the simulation/virtual prototyping of the real experiment.

Seed, T.; Berman, B.L.; Zahrt, J.D.

1993-10-01T23:59:59.000Z

329

Medium-fi EvaluationMedium-fi PrototypesMedium-fi DesignLow-fi EvaluationLow-fi Prototypes What is Aphasia?  

E-Print Network [OSTI]

Medium-fi EvaluationMedium-fi PrototypesMedium-fi DesignLow-fi EvaluationLow-fi Prototypes What Cycle Investigated ability of existing technologies to fulfill needs. Extra time is needed to ensure. Evaluated with two participants. One had aphasia as a result of a brain tumour and the other as a result

Findlater, Leah

330

The Linac4 DTL Prototype: Low and High Power Measurements  

E-Print Network [OSTI]

The prototype of the Linac4 Drift Tube Linac (DTL) has undergone low power measurements in order to verify the RF coupling and to adjust the post-coupler lengths based on bead-pull and spectrum measurements. Following the installation at the test stand, the cavity has been subjected to high power operation at Linac4 and SPL duty cycles. Saturation effects and multipacting have been observed and linked to X-ray emission. Voltage holding is reported in the presence of magnetic fields from permanent magnet quadrupoles (PMQ) installed in the first drift tubes.

De Michele, G; Marques-Balula, J; Ramberger, S

2012-01-01T23:59:59.000Z

331

Design of an omnidirectional and holonomic wheeled platform prototype  

SciTech Connect (OSTI)

This paper presents the concepts for a new family of wheeled platforms which feature full omnidirectionality with simultaneous and independent rotational and translational motion capabilities. We first describe the original orthogonal-wheels assembly'' on which these platforms are based and discuss how a combination of these assemblies is used to generate an omnidirectional capability. The design and control of a prototype platform developed to test and demonstrate the proposed concepts is then described, and experimental results illustrating the full omnidirectionality of the platform with decoupled rotational and translational degrees of freedom are presented. 15 refs., 9 figs.

Killough, S.M.; Pin, F.G.

1991-01-01T23:59:59.000Z

332

Performance of the SLD Warm Iron Calorimeter prototype  

SciTech Connect (OSTI)

A prototype hadron calorimeter, of similar design to the Warm Iron Calorimeter (WIC) planned for the SLD experiment, has been built and its performance has been studied in a test beam. The WIC is an iron sampling calorimeter whose active elements are plastic streamer tubes similar to those used for the Mont-Blanc proton decay experiment. The construction and operation of the tubes will be briefly described together with their use in an iron calorimeter - muon tracker. Efficiency, resolution and linearity have been measured in a hadron/muon beam up to 11 GeV. The measured values correspond to the SLD design goals.

Callegari, G.; Piemontese, L.; De Sangro, R.; Peruzzi, I., Piccolo, M.; Busza, W.; Friedman, J.; Johnson, A.; Kendall, H.; Kistiakowsky, V.

1986-03-01T23:59:59.000Z

333

Hanford prototype-barrier status report FY 1996  

SciTech Connect (OSTI)

A prototype surface barrier is being evaluated as part of a treatability study at the 200-BP-1 Operable Unit in the 200 East Area of the Hanford Site. Tests include the application of irrigation water to the northern half of the barrier and subsequent measurement of water balance, wind and water erosion, subsidence, plant establishment,a nd plant and animal intrusion. The tests are designed to evaluate both irrigated and nonirrigated sideslope and vegetated surfaces over a period of 3 years. This report documents findings from the second year of testing.

Gee, G.W.; Ward, A.L.; Gilmore, B.G.; Link, S.O.; Dennis, G.W.; O`Neil, T.K.

1996-11-01T23:59:59.000Z

334

Construction of the CERN Fast Cycled Superconducting Dipole Magnet Prototype  

E-Print Network [OSTI]

CERN is pursuing a small scale R&D on a fast cycled superconducting dipole magnet (FCM) of interest for the upgrade plan of the LHC accelerator complex. The FCM dipole prototype being built has a number of novel features if compared to other magnets for similar applications. In this paper we describe the magnet design, and its expected performance, focusing especially on the novel features (magnetic circuit, mechanical supports, cooling) and on the details of the manufacturing procedure (coil winding and impregnation, joints, instrumentation and quench protection).

Borgnolutti, F; Bottura, L; Carra, F; Foffano, G; Gomes De Faria, J M; Kalouguine, O; Kirby, G; Lopez, C; Tommasini, D

2012-01-01T23:59:59.000Z

335

Liquid level detector  

DOE Patents [OSTI]

A liquid level detector for conductive liquids for vertical installation in a tank, the detector having a probe positioned within a sheath and insulated therefrom by a seal so that the tip of the probe extends proximate to but not below the lower end of the sheath, the lower end terminating in a rim that is provided with notches, said lower end being tapered, the taper and notches preventing debris collection and bubble formation, said lower end when contacting liquid as it rises will form an airtight cavity defined by the liquid, the interior sheath wall, and the seal, the compression of air in the cavity preventing liquid from further entry into the sheath and contact with the seal. As a result, the liquid cannot deposit a film to form an electrical bridge across the seal.

Tshishiku, Eugene M. (Augusta, GA)

2011-08-09T23:59:59.000Z

336

IMPACT OF BOUNDARY-LAYER CUTTING AND FLOW CONDITIONING ON FREE-SURFACE BEHAVIOR IN TURBULENT LIQUID SHEETS  

E-Print Network [OSTI]

IMPACT OF BOUNDARY-LAYER CUTTING AND FLOW CONDITIONING ON FREE-SURFACE BEHAVIOR IN TURBULENT LIQUID dimension) = 1 cm into ambient air are compared with empirical correlations at a nearly prototypical term, for a well- conditioned jet but is not a substitute for well-designed flow conditioning. I

California at San Diego, University of

337

Ultrasonic liquid level detector  

DOE Patents [OSTI]

An ultrasonic liquid level detector for use within a shielded container, the detector being tubular in shape with a chamber at its lower end into which liquid from in the container may enter and exit, the chamber having an ultrasonic transmitter and receiver in its top wall and a reflector plate or target as its bottom wall whereby when liquid fills the chamber a complete medium is then present through which an ultrasonic wave may be transmitted and reflected from the target thus signaling that the liquid is at chamber level.

Kotz, Dennis M. (North Augusta, SC); Hinz, William R. (Augusta, GA)

2010-09-28T23:59:59.000Z

338

Prototype of time digitizing system for BESIII endcap TOF upgrade  

E-Print Network [OSTI]

The prototype of time digitizing system for the upgrade of BESIII endcap TOF (ETOF) is introduced in this paper. The ETOF readout electronics has a formation of distributed architecture that hit signal from multi-gap resistive plate chamber (MRPC) is signaled as LVDS by front-end electronics (FEE) and sent to the back-end time digitizing system via long shield differential twisted pair cables. The ETOF digitizing system consists of 2 VME crates each of which contains modules of time digitizing, clock, trigger and fast control etc. The time digitizing module (TDIG) of this prototype can support up to 72 electrical channels of hit information measurement. The fast control (FCTL) module can operate at barrel or endcap mode. The barrel FCTL fans fast control signals from the trigger system out to endcap FCTLs, merges data from endcaps and transfers to the trigger system. Without modifying the barrel TOF structure, this time digitizing architecture benefits for improving ETOF performance without degrading barrel TOF measuring. Lab experiments show that the time resolution of this digitizing system can be less than 20ps, and the data throughput to DAQ can be about 92Mbps. Beam experiments show that the complete time resolution can be less than 45ps.

Cao Ping; Sun Wei-Jia; Ji Xiao-Lu; Fan Huan-Huan; Wang Si-Yu; Liu Shu-Bin; An Qi

2013-05-30T23:59:59.000Z

339

Execution of rapid prototyping technology - an Indian manufacturing industry's perspective  

Science Journals Connector (OSTI)

Since independence, India has endeavoured to bring economic and social change through science and technology. While India's economic growth in the recent years has been impressive, many challenges remain to be met to create a strong and vibrant innovation eco-system. This requires a culture and value system which supports both basic and applied research and technology development. One of those technologies, rapid prototyping (RP) technology, is the automatic construction of physical objects using additive manufacturing technology. It can be defined as an automated and patternless process which allows solid physical parts to be made directly from computer data in a short time. RP acts as the 'manufacturing middle' to link up the computer-aided design (CAD) process and manufacturing processes. It includes the making of prototypes for design verification and even the making of tooling for production. With the trend towards concurrent engineering and the widespread use of CAD, RP has quickly become a booming business in the past few years. This paper aims to provide a comprehensive overview of the execution of RP technology in India and the critical decision factors in executing RP for the Indian manufacturing industry.

Rajesh Kumar; Rupinder Singh; I.P.S. Ahuja

2013-01-01T23:59:59.000Z

340

The ASTRI SST-2M Prototype: Structure and Mirror  

E-Print Network [OSTI]

The next generation of IACT (Imaging Atmospheric Cherenkov Telescope) will explore the uppermost end of the VHE (Very High Energy) domain up to about few hundreds of TeV with unprecedented sensibility, angular resolution and imaging quality. To this end, INAF (Italian National Institute of Astrophysics) is currently developing a scientific and technological telescope prototype for the implementation of the CTA (Cherenkov Telescope Array) observatory. ASTRI (Astrofisica con Specchi a Tecnologia Replicante Italiana) foresees the full design, development, installation and calibration of a Small Size 4 meter class Telescope. The telescope, named SST-2M, is based on an aplanatic, wide field, double reflection optical layout in a Schwarzschild-Couder configuration. In this paper we report about the technological solutions adopted for the telescope and for the mirrors. In particular the structural and electro-mechanical design of the telescope and the results on the optical performance derived after the development of a prototype of the segments that will be assembled to form the primary mirror.

Rodolfo Canestrari; Osvaldo Catalano; Mauro Fiorini; Enrico Giro; Nicola La Palombara; Giovanni Pareschi; Luca Stringhetti; Gino Tosti; Stefano Vercellone; for the ASTRI Collaboration; Francesco Martelli; Giancarlo Parodi; Pierfrancesco Rossettini; Raffaele Tomelleri

2013-07-18T23:59:59.000Z

Note: This page contains sample records for the topic "liquid argon prototype" from the National Library of EnergyBeta (NLEBeta).
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341

Liquid heat capacity lasers  

DOE Patents [OSTI]

The heat capacity laser concept is extended to systems in which the heat capacity lasing media is a liquid. The laser active liquid is circulated from a reservoir (where the bulk of the media and hence waste heat resides) through a channel so configured for both optical pumping of the media for gain and for light amplification from the resulting gain.

Comaskey, Brian J. (Walnut Creek, CA); Scheibner, Karl F. (Tracy, CA); Ault, Earl R. (Livermore, CA)

2007-05-01T23:59:59.000Z

342

Carbon monoxide absorbing liquid  

SciTech Connect (OSTI)

The present disclosure is directed to a carbon monoxide absorbing liquid containing a cuprous ion, hydrochloric acid and titanum trichloride. Titanium trichloride is effective in increasing the carbon monoxide absorption quantity. Furthermore, titanium trichloride remarkably increases the oxygen resistance. Therefore, this absorbing liquid can be used continuously and for a long time.

Arikawa, Y.; Horigome, S.; Kanehori, K.; Katsumoto, M.

1981-07-07T23:59:59.000Z

343

Precision liquid level sensor  

DOE Patents [OSTI]

A precision liquid level sensor utilizes a balanced R. F. bridge, each arm including an air dielectric line. Changes in liquid level along one air dielectric line imbalance the bridge and create a voltage which is directly measurable across the bridge.

Field, Michael E. (Albuquerque, NM); Sullivan, William H. (Albuquerque, NM)

1985-01-01T23:59:59.000Z

344

Effect of molecular solutes on the electron drift velocity in liquid Ar, Kr, and Xe  

Science Journals Connector (OSTI)

Measurements of the electron drift velocity in liquid argon, krypton, and xenon were performed in an electric field up to 100 kV cm-1. At higher field strengths saturation velocities were observed in agreement with other authors. The addition of a small concentration of molecular solutes leads to an increase of the electron drift velocity above the saturation value of the pure liquid. The drift velocity either reaches a higher constant value or passes through a maximum at field strengths greater than 104 V cm-1. This effect was investigated as a function of solute concentration for N2, H2, methane, ethane, propane, and butane. Inelastic energy losses in collisions of electrons and solute molecules are assumed and by means of the Cohen-Lekner theory the energy dependence of the loss processes is derived.

K. Yoshino; U. Sowada; W. F. Schmidt

1976-07-01T23:59:59.000Z

345

90.1 Prototype Building Models Mid-rise Apartment | Building Energy Codes  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Mid-rise Apartment Mid-rise Apartment The ASHRAE Standard 90.1 prototype building models were developed by Pacific Northwest National Laboratory in support of the U.S. Department of Energy's (DOE's) Building Energy Codes Program. These prototype buildings were derived from DOE's Commercial Reference Building Models. This suite of ASHRAE Standard 90.1 prototype buildings covers all the Reference Building types except supermarket, and also adds a new building prototype representing high-rise apartment buildings.The prototype models include 16 building types in 17 climate locations for ASHRAE Standards 90.1-2004, 90.1-2007 and 90.1-2010. This combination leads to a set of 816 building models (in EnergyPlus Version 6.0). Also included is a scorecard for each prototype building. The scorecard is a spreadsheet that summarizes the

346

90.1 Prototype Building Models Stand Alone Retail | Building Energy Codes  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Stand Alone Retail Stand Alone Retail The ASHRAE Standard 90.1 prototype building models were developed by Pacific Northwest National Laboratory in support of the U.S. Department of Energy's (DOE's) Building Energy Codes Program. These prototype buildings were derived from DOE's Commercial Reference Building Models. This suite of ASHRAE Standard 90.1 prototype buildings covers all the Reference Building types except supermarket, and also adds a new building prototype representing high-rise apartment buildings.The prototype models include 16 building types in 17 climate locations for ASHRAE Standards 90.1-2004, 90.1-2007 and 90.1-2010. This combination leads to a set of 816 building models (in EnergyPlus Version 6.0). Also included is a scorecard for each prototype building. The scorecard is a spreadsheet that summarizes the

347

90.1 Prototype Building Models Quick Service Restaurant | Building Energy  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Quick Service Restaurant Quick Service Restaurant The ASHRAE Standard 90.1 prototype building models were developed by Pacific Northwest National Laboratory in support of the U.S. Department of Energy's (DOE's) Building Energy Codes Program. These prototype buildings were derived from DOE's Commercial Reference Building Models. This suite of ASHRAE Standard 90.1 prototype buildings covers all the Reference Building types except supermarket, and also adds a new building prototype representing high-rise apartment buildings.The prototype models include 16 building types in 17 climate locations for ASHRAE Standards 90.1-2004, 90.1-2007 and 90.1-2010. This combination leads to a set of 816 building models (in EnergyPlus Version 6.0). Also included is a scorecard for each prototype building. The scorecard is a spreadsheet that summarizes the

348

90.1 Prototype Building Models- Medium Office | Building Energy Codes  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Models- Medium Office Models- Medium Office The ASHRAE Standard 90.1 prototype building models were developed by Pacific Northwest National Laboratory in support of the U.S. Department of Energy's (DOE's) Building Energy Codes Program. These prototype buildings were derived from DOE's Commercial Reference Building Models. This suite of ASHRAE Standard 90.1 prototype buildings covers all the Reference Building types except supermarket, and also adds a new building prototype representing high-rise apartment buildings.The prototype models include 16 building types in 17 climate locations for ASHRAE Standards 90.1-2004, 90.1-2007 and 90.1-2010. This combination leads to a set of 816 building models (in EnergyPlus Version 6.0). Also included is a scorecard for each prototype building. The scorecard is a spreadsheet that summarizes the

349

90.1 Prototype Building Models Large Hotel | Building Energy Codes Program  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Hotel Hotel The ASHRAE Standard 90.1 prototype building models were developed by Pacific Northwest National Laboratory in support of the U.S. Department of Energy's (DOE's) Building Energy Codes Program. These prototype buildings were derived from DOE's Commercial Reference Building Models. This suite of ASHRAE Standard 90.1 prototype buildings covers all the Reference Building types except supermarket, and also adds a new building prototype representing high-rise apartment buildings.The prototype models include 16 building types in 17 climate locations for ASHRAE Standards 90.1-2004, 90.1-2007 and 90.1-2010. This combination leads to a set of 816 building models (in EnergyPlus Version 6.0). Also included is a scorecard for each prototype building. The scorecard is a spreadsheet that summarizes the

350

90.1 Prototype Building Models Warehouse (non-refrigerated) | Building  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Warehouse (non-refrigerated) Warehouse (non-refrigerated) The ASHRAE Standard 90.1 prototype building models were developed by Pacific Northwest National Laboratory in support of the U.S. Department of Energy's (DOE's) Building Energy Codes Program. These prototype buildings were derived from DOE's Commercial Reference Building Models. This suite of ASHRAE Standard 90.1 prototype buildings covers all the Reference Building types except supermarket, and also adds a new building prototype representing high-rise apartment buildings.The prototype models include 16 building types in 17 climate locations for ASHRAE Standards 90.1-2004, 90.1-2007 and 90.1-2010. This combination leads to a set of 816 building models (in EnergyPlus Version 6.0). Also included is a scorecard for each prototype building. The scorecard is a spreadsheet that summarizes the

351

90.1 Prototype Building Models Large Office | Building Energy Codes Program  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Office Office The ASHRAE Standard 90.1 prototype building models were developed by Pacific Northwest National Laboratory in support of the U.S. Department of Energy's (DOE's) Building Energy Codes Program. These prototype buildings were derived from DOE's Commercial Reference Building Models. This suite of ASHRAE Standard 90.1 prototype buildings covers all the Reference Building types except supermarket, and also adds a new building prototype representing high-rise apartment buildings.The prototype models include 16 building types in 17 climate locations for ASHRAE Standards 90.1-2004, 90.1-2007 and 90.1-2010. This combination leads to a set of 816 building models (in EnergyPlus Version 6.0). Also included is a scorecard for each prototype building. The scorecard is a spreadsheet that summarizes the

352

90.1 Prototype Building Models Small Office | Building Energy Codes Program  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Office Office The ASHRAE Standard 90.1 prototype building models were developed by Pacific Northwest National Laboratory in support of the U.S. Department of Energy's (DOE's) Building Energy Codes Program. These prototype buildings were derived from DOE's Commercial Reference Building Models. This suite of ASHRAE Standard 90.1 prototype buildings covers all the Reference Building types except supermarket, and also adds a new building prototype representing high-rise apartment buildings.The prototype models include 16 building types in 17 climate locations for ASHRAE Standards 90.1-2004, 90.1-2007 and 90.1-2010. This combination leads to a set of 816 building models (in EnergyPlus Version 6.0). Also included is a scorecard for each prototype building. The scorecard is a spreadsheet that summarizes the

353

90.1 Prototype Building Models Strip Mall | Building Energy Codes Program  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Strip Mall Strip Mall The ASHRAE Standard 90.1 prototype building models were developed by Pacific Northwest National Laboratory in support of the U.S. Department of Energy's (DOE's) Building Energy Codes Program. These prototype buildings were derived from DOE's Commercial Reference Building Models. This suite of ASHRAE Standard 90.1 prototype buildings covers all the Reference Building types except supermarket, and also adds a new building prototype representing high-rise apartment buildings.The prototype models include 16 building types in 17 climate locations for ASHRAE Standards 90.1-2004, 90.1-2007 and 90.1-2010. This combination leads to a set of 816 building models (in EnergyPlus Version 6.0). Also included is a scorecard for each prototype building. The scorecard is a spreadsheet that summarizes the

354

90.1 Prototype Building Models Small Hotel | Building Energy Codes Program  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Hotel Hotel The ASHRAE Standard 90.1 prototype building models were developed by Pacific Northwest National Laboratory in support of the U.S. Department of Energy's (DOE's) Building Energy Codes Program. These prototype buildings were derived from DOE's Commercial Reference Building Models. This suite of ASHRAE Standard 90.1 prototype buildings covers all the Reference Building types except supermarket, and also adds a new building prototype representing high-rise apartment buildings.The prototype models include 16 building types in 17 climate locations for ASHRAE Standards 90.1-2004, 90.1-2007 and 90.1-2010. This combination leads to a set of 816 building models (in EnergyPlus Version 6.0). Also included is a scorecard for each prototype building. The scorecard is a spreadsheet that summarizes the

355

90.1 Prototype Building Models Primary School | Building Energy Codes  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Primary School Primary School The ASHRAE Standard 90.1 prototype building models were developed by Pacific Northwest National Laboratory in support of the U.S. Department of Energy's (DOE's) Building Energy Codes Program. These prototype buildings were derived from DOE's Commercial Reference Building Models. This suite of ASHRAE Standard 90.1 prototype buildings covers all the Reference Building types except supermarket, and also adds a new building prototype representing high-rise apartment buildings.The prototype models include 16 building types in 17 climate locations for ASHRAE Standards 90.1-2004, 90.1-2007 and 90.1-2010. This combination leads to a set of 816 building models (in EnergyPlus Version 6.0). Also included is a scorecard for each prototype building. The scorecard is a spreadsheet that summarizes the

356

90.1 Prototype Building Models Hospital | Building Energy Codes Program  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Hospital Hospital The ASHRAE Standard 90.1 prototype building models were developed by Pacific Northwest National Laboratory in support of the U.S. Department of Energy's (DOE's) Building Energy Codes Program. These prototype buildings were derived from DOE's Commercial Reference Building Models. This suite of ASHRAE Standard 90.1 prototype buildings covers all the Reference Building types except supermarket, and also adds a new building prototype representing high-rise apartment buildings.The prototype models include 16 building types in 17 climate locations for ASHRAE Standards 90.1-2004, 90.1-2007 and 90.1-2010. This combination leads to a set of 816 building models (in EnergyPlus Version 6.0). Also included is a scorecard for each prototype building. The scorecard is a spreadsheet that summarizes the

357

90.1 Prototype Building Models Secondary School | Building Energy Codes  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Secondary School Secondary School The ASHRAE Standard 90.1 prototype building models were developed by Pacific Northwest National Laboratory in support of the U.S. Department of Energy's (DOE's) Building Energy Codes Program. These prototype buildings were derived from DOE's Commercial Reference Building Models. This suite of ASHRAE Standard 90.1 prototype buildings covers all the Reference Building types except supermarket, and also adds a new building prototype representing high-rise apartment buildings.The prototype models include 16 building types in 17 climate locations for ASHRAE Standards 90.1-2004, 90.1-2007 and 90.1-2010. This combination leads to a set of 816 building models (in EnergyPlus Version 6.0). Also included is a scorecard for each prototype building. The scorecard is a spreadsheet that summarizes the

358

A prototype data archive for the PIER "thermal distribution systems in  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

A prototype data archive for the PIER "thermal distribution systems in A prototype data archive for the PIER "thermal distribution systems in commercial buildings" project Title A prototype data archive for the PIER "thermal distribution systems in commercial buildings" project Publication Type Report LBNL Report Number LBNL-54191 Year of Publication 2004 Authors Diamond, Richard C., Craig P. Wray, Brian V. Smith, Darryl J. Dickerhoff, Nance Matson, and Skylar A. Cox Date Published 01/2004 Publisher Lawrence Berkeley National Laboratory Abstract A prototype archive for a selection of building energy data on thermal distribution systems in commercial buildings was developed and pilot tested. While the pilot demonstrated the successful development of the data archive prototype, several questions remain about the usefulness of such an archive. Specifically, questions on the audience, frequency of use, maintenance, and updating of the archive would need to be addressed before this prototype is taken to the next level.

359

Liquid Fuels Market Module  

U.S. Energy Information Administration (EIA) Indexed Site

Liquid Fuels Market Module Liquid Fuels Market Module This page inTenTionally lefT blank 145 U.S. Energy Information Administration | Assumptions to the Annual Energy Outlook 2013 Liquid Fuels Market Module The NEMS Liquid Fuels Market Module (LFMM) projects petroleum product prices and sources of supply for meeting petroleum product demand. The sources of supply include crude oil (both domestic and imported), petroleum product imports, unfinished oil imports, other refinery inputs (including alcohols, ethers, esters, corn, biomass, and coal), natural gas plant liquids production, and refinery processing gain. In addition, the LFMM projects capacity expansion and fuel consumption at domestic refineries. The LFMM contains a linear programming (LP) representation of U.S. petroleum refining

360

Reading Comprehension - Liquid Nitrogen  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Liquid Nitrogen Liquid Nitrogen Nitrogen is the most common substance in Earth's _________ crust oceans atmosphere trees . In the Earth's atmosphere, nitrogen is a gas. The particles of a gas move very quickly. They run around and bounce into everyone and everything. The hotter a gas is, the _________ slower faster hotter colder the particles move. When a gas is _________ cooled warmed heated compressed , its particles slow down. If a gas is cooled enough, it can change from a gas to a liquid. For nitrogen, this happens at a very _________ strange warm low high temperature. If you want to change nitrogen from a gas to a liquid, you have to bring its temperature down to 77 Kelvin. That's 321 degrees below zero _________ Kelvin Celsius Centigrade Fahrenheit ! Liquid nitrogen looks like water, but it acts very differently. It

Note: This page contains sample records for the topic "liquid argon prototype" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


361

Low-temperature atmospheric pressure argon plasma treatment and hybrid laser-plasma ablation of barite crown and heavy flint glass  

Science Journals Connector (OSTI)

We report on atmospheric pressure argon plasma-based surface treatment and hybrid laser-plasma ablation of barite crown glass N-BaK4 and heavy flint glass SF5. By pure plasma...

Gerhard, Christoph; Roux, Sophie; Brückner, Stephan; Wieneke, Stephan; Viöl, Wolfgang

2012-01-01T23:59:59.000Z

362

Effect of Ultra High Pressure Under Argon and Temperature on the Volatiles and Piperine Content and Microbiological Quality of Black Pepper (Piper Nigrum L.)  

Science Journals Connector (OSTI)

In the search of effective decontamination methods of herbal spices, combined action of high pressure under argon at various temperatures has been applied. Ground black pepper (Piper nigrum L.) samples were expos...

S. Sk?pska; B. Windyga; E. Kostrzewa…

2003-01-01T23:59:59.000Z

363

Risk D&D Rapid Prototype: Scenario Documentation and Analysis Tool  

SciTech Connect (OSTI)

Report describes process and methodology associated with a rapid prototype tool for integrating project risk analysis and health & safety risk analysis for decontamination and decommissioning projects.

Unwin, Stephen D.; Seiple, Timothy E.

2009-05-28T23:59:59.000Z

364

Sensor Development and Readout Prototyping for the STAR Pixel Detector  

SciTech Connect (OSTI)

The STAR experiment at the Relativistic Heavy Ion Collider (RHIC) is designing a new vertex detector. The purpose of this upgrade detector is to provide high resolution pointing to allow for the direct topological reconstruction of heavy flavor decays such as the D{sup 0} by finding vertices displaced from the collision vertex by greater than 60 microns. We are using Monolithic Active Pixel Sensor (MAPS) as the sensor technology and have a coupled sensor development and readout system plan that leads to a final detector with a <200 {micro}s integration time, 400 M pixels and a coverage of -1 < {eta} < 1. We present our coupled sensor and readout development plan and the status of the prototyping work that has been accomplished.

Greiner, L.; Anderssen, E.; Matis, H.S.; Ritter, H.G.; Stezelberger, T.; Szelezniak, M.; Sun, X.; Vu, C.; Wieman, H.

2009-01-14T23:59:59.000Z

365

Testing of 3-meter Prototype Fault Current Limiting Cables  

SciTech Connect (OSTI)

Two 3-m long, single-phase cables have been fabricated by Ultera from second generation (2G) superconductor supplied by American Superconductor. The first cable was made with two layers of 2G tape conductor and had a critical current of 5,750 A while the second cable had four layers and a critical current of 8,500 A. AC loss was measured for both cables at ac currents of up to 4 kArms. Ultera performed initial fault current studies of both cables in Denmark with limited currents in the range from 9.1 to 44 kA. Results from these tests will provide a basis for a 25-m long, three-phase, prototype cable to be tested at ORNL early next year and a 300-m long, fault current limiting, superconducting cable to be installed in a ConEd substation in New York City.

Gouge, Michael J [ORNL] [ORNL; Duckworth, Robert C [ORNL] [ORNL; Demko, Jonathan A [ORNL] [ORNL; Rey, Christopher M [ORNL] [ORNL; Thompson, James R [ORNL] [ORNL; Lindsay, David T [ORNL] [ORNL; Tolbert, Jerry Carlton [ORNL] [ORNL; Willen, Dag [Ultera] [Ultera; Lentge, Heidi [Ultera] [Ultera; Thidemann, Carsten [Ultera] [Ultera; Carter, Bill [AMSC] [AMSC

2009-01-01T23:59:59.000Z

366

Performance of a Quintuple-GEM Based RICH Detector Prototype  

E-Print Network [OSTI]

\\v{C}erenkov technology is one of the first choices when it comes to particle identification in high energy particle collision applications. Particularly challenging is the deployment in the high pseudorapidity\\footnote{Spatial coordinate describing the angle of a particle relative to the beam axis: $\\eta\\equiv -ln\\left[\\tan\\left(\\frac{\\theta}{2}\\right)\\right]$} (forward) direction where particle identification must allow for high lab momenta, up to about 50 GeV/c. In this region \\v{C}erenkov Ring-Imaging is among the most viable solutions and will provide the desired performance if the radiator has a low index of refraction, high yield of photoelectrons, and allows precise measurement of the position of each photoelectron. A RICH detector prototype based on a novel concept that allows the use of a significantly shorter radiator length compared to conventional RICH detectors has been constructed and tested. The setup and the results obtained are described.

Blatnik, M; Deshpande, A; Dixit, D; Feege, N; Hemmick, T K; Lewis, B; Purschke, M L; Roh, W; Torales-Acosta, F; Videbaek, T; Zajac, S

2015-01-01T23:59:59.000Z

367

Design and Testing of Prototypic Elements Containing Monolithic Fuel  

SciTech Connect (OSTI)

The US fuel development team has performed numerous irradiation tests on small to medium sized specimens containing low enriched uranium fuel designs. The team is now focused on qualification and demonstration of the uranium-molybdenum Base Monolithic Design and has entered the next generation of testing with the design and irradiation of prototypic elements which contain this fuel. The designs of fuel elements containing monolithic fuel, such as AFIP-7 (which is currently under irradiation) and RERTR-FE (which is currently under fabrication), are appropriate progressions relative to the technology life cycle. The culmination of this testing program will occur with the design, fabrication, and irradiation of demonstration products to include the base fuel demonstration and design demonstration experiments. Future plans show that design, fabrication, and testing activities will apply the rigor needed for a demonstration campaign.

N.E. Woolstenhulme; M.K. Meyer; D.M. Wachs

2011-10-01T23:59:59.000Z

368

Development and Test of a Prototype 100MVA Superconducting Generator  

SciTech Connect (OSTI)

In 2002, General Electric and the US Department of Energy (DOE) entered into a cooperative agreement for the development of a commercialized 100 MVA generator using high temperature superconductors (HTS) in the field winding. The intent of the program was to: • Identify and develop technologies that would be needed for such a generator. • Develop conceptual designs for generators with ratings of 100 MVA and higher using HTS technology. • Perform proof of concept tests at the 1.5 MW level for GE’s proprietary warm iron rotor HTS generator concept. • Design, build, and test a prototype of a commercially viable 100 MVA generator that could be placed on the power grid. This report summarizes work performed during the program and is provided as one of the final program deliverables.

Fogarty, James M.; Bray, James W.

2007-05-25T23:59:59.000Z

369

Test report : Princeton power systems prototype energy storage system.  

SciTech Connect (OSTI)

The Department of Energy Office of Electricity (DOE/OE), Sandia National Laboratory (SNL) and the Base Camp Integration Lab (BCIL) partnered together to incorporate an energy storage system into a microgrid configured Forward Operating Base to reduce the fossil fuel consumption and to ultimately save lives. Energy storage vendors will be sending their systems to SNL Energy Storage Test Pad (ESTP) for functional testing and then to the BCIL for performance evaluation. The technologies that will be tested are electro-chemical energy storage systems comprised of lead acid, lithium-ion or zinc-bromide. Princeton Power Systems has developed an energy storage system that utilizes lithium ion phosphate batteries to save fuel on a military microgrid. This report contains the testing results and some limited analysis of performance of the Princeton Power Systems Prototype Energy Storage System.

Rose, David Martin; Schenkman, Benjamin L.; Borneo, Daniel R.

2013-08-01T23:59:59.000Z

370

The ASTRI SST-2M Prototype: Structure and Mirror  

E-Print Network [OSTI]

The next generation of IACT (Imaging Atmospheric Cherenkov Telescope) will explore the uppermost end of the VHE (Very High Energy) domain up to about few hundreds of TeV with unprecedented sensibility, angular resolution and imaging quality. To this end, INAF (Italian National Institute of Astrophysics) is currently developing a scientific and technological telescope prototype for the implementation of the CTA (Cherenkov Telescope Array) observatory. ASTRI (Astrofisica con Specchi a Tecnologia Replicante Italiana) foresees the full design, development, installation and calibration of a Small Size 4 meter class Telescope. The telescope, named SST-2M, is based on an aplanatic, wide field, double reflection optical layout in a Schwarzschild-Couder configuration. In this paper we report about the technological solutions adopted for the telescope and for the mirrors. In particular the structural and electro-mechanical design of the telescope and the results on the optical performance derived after the development ...

Canestrari, Rodolfo; Fiorini, Mauro; Giro, Enrico; La Palombara, Nicola; Pareschi, Giovanni; Stringhetti, Luca; Tosti, Gino; Vercellone, Stefano; Martelli, Francesco; Parodi, Giancarlo; Rossettini, Pierfrancesco; Tomelleri, Raffaele

2013-01-01T23:59:59.000Z

371

Prototype dish testing and analysis at Sandia National Laboratories  

SciTech Connect (OSTI)

During the past year, Sandia National Laboratories performed on-sun testing of several dish concentrator concepts. These tests were undertaken at the National Solar Thermal Test Facility (NSTTF). Two of the tests were performed in support of the DOE Concentrator Receiver Development Program. The first was on-sun testing of the single-element stretched-membrane dish; this 7-meter diameter dish uses a single preformed metal membrane with an aluminized polyester optical surface and shows potential for future dish-Stirling systems. The next involved two prototype facets from the Faceted Stretched-Membrane Dish Program. These facets, representing competitive design concepts, are closest to commercialization. Five 1-meter triangular facets were tested on-sun as part of the development program for a solar dynamic system on Space Station Freedom. While unique in character, all the tests utilized the Beam Characterization System (BCS) as the main measurement tool and all were analyzed using the Sandia-developed CIRCE2 computer code. The BCS is used to capture and digitize an image of the reflected concentrator beam that is incident on a target surface. The CIRCE2 program provides a computational tool, which when given the geometry of the concentrator and target as well as other design parameters will predict the flux distribution of the reflected beam. One of these parameters, slope error, is the variable that has a major effect in determining the quality of the reflected beam. The methodology used to combine these two tools to predict uniform slope errors for the dishes is discussed in this document. As the Concentrator Development Programs continue, Sandia will test and evaluate two prototype dish systems. The first, the faceted stretched-membrane dish, is expected to be tested in 1992, followed by the full-scale single-element stretched-membrane dish in 1993. These tests will use the tools and methodology discussed in this document. 14 refs., 10 figs., 5 tabs.

Grossman, J.W.; Houser, R.M.; Erdman, W.W.

1991-01-01T23:59:59.000Z

372

Final report for 1.7 megajoule prototype bank testing  

SciTech Connect (OSTI)

American Control Engineering is pleased to submit to LLNL this Final Report describing the final assembly and preliminary testing of the 1.7 megajoule prototype capacitor bank that is located at our facility. The purpose of this test program was to evaluate and characterize the performance of this capacitor bank. These tests were necessary in order to proceed with the design of a final building block module that is to be used to create a reliable and cost effective multi-hundred megajoule energy storage system. The period of performance covered by this contract is from January 1, 1991 through August 31, 1992. American Control Engineering has provided all of the necessary facilities, personnel and materials that were required to perform this testing effort (except for the existing capacitor bank, the LLNL provided flashlamp assembly and E-size ignitron switch tube), An overall view of the assembled capacitor bank system as it appeared at the completion of this subcontract is shown. The initial statement-of-work for the testing and characterization of the capacitor bank was as follows: (1) Measure all of the principal electrical parameters for the 1.7 megajoule prototype capacitor bank at low voltage before proceeding to high voltage testing. This low voltage testing is to include measurement of both normal and fault current and voltage waveforms, starting with the smallest building block grouping and proceeding systematically through to the capacitor bank load. (2) Assemble and attach each of the major subsystem elements to the capacitor bank as they are required for low voltage testing including the ignition output switch structure, coaxial transmission line and load assembly. (3) Make comparison of the test results collected through low voltage testing with those forecasted by the computer mode. Evaluate and resolve any discrepancies between the two results until the computer model achieves reasonable agreement with the actual measured test results.

NONE

1995-10-01T23:59:59.000Z

373

A prototype photovoltaic/thermal system integrated with transpired collector  

SciTech Connect (OSTI)

Building-integrated photovoltaic/thermal (BIPV/T) systems may be utilized to produce useful heat while simultaneously generating electricity from the same building envelope surface. A well known highly efficient collector is the open-loop unglazed transpired collector (UTC) which consists of dark porous cladding through which outdoor air is drawn and heated by absorbed solar radiation. Commercially available photovoltaic systems typically produce electricity with efficiencies up to about 18%. Thus, it is beneficial to obtain much of the normally wasted heat from the systems, possibly by combining UTC with photovoltaics. Combination of BIPV/T and UTC systems for building facades is considered in this paper - specifically, the design of a prototype facade-integrated photovoltaic/thermal system with transpired collector (BIPV/T). A full scale prototype is constructed with 70% of UTC area covered with PV modules specially designed to enhance heat recovery and compared to a UTC of the same area under outdoor sunny conditions with low wind. The orientation of the corrugations in the UTC is horizontal and the black-framed modules are attached so as to facilitate flow into the UTC plenum. While the overall combined thermal efficiency of the UTC is higher than that of the BIPV/T system, the value of the generated energy - assuming that electricity is at least four times more valuable than heat - is between 7% and 17% higher. Also, the electricity is always useful while the heat is usually utilized only in the heating season. The BIPV/T concept is applied to a full scale office building demonstration project in Montreal, Canada. The ratio of photovoltaic area coverage of the UTC may be selected based on the fresh air heating needs of the building, the value of the electricity generated and the available building surfaces. (author)

Athienitis, Andreas K.; Bambara, James; O'Neill, Brendan; Faille, Jonathan [Dept. of Building, Civil and Environmental Engineering, Concordia University, 1455 Maisonneuve W., Montreal, Quebec (Canada)

2011-01-15T23:59:59.000Z

374

Air Liquide - Biogas & Fuel Cells  

Broader source: Energy.gov (indexed) [DOE]

Liquide - Biogas & Fuel Cells Hydrogen Energy Biogas Upgrading Technology 12 June 2012 Charlie.Anderson@airliquide.com 2 Air Liquide, world leader in gases for industry,...

375

Sandia National Laboratories: ionic liquid  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

liquid Biofuels Blend Right In: Researchers Show Ionic Liquids Effective for Pretreating Mixed Blends of Biofuel Feedstocks On February 26, 2013, in Biofuels, Biomass, Energy,...

376

The Ionization of Neon and Argon by Positive Alkali Ions of Energies from 650 to 2000 Volts  

Science Journals Connector (OSTI)

With an apparatus of new design the study of the ionization of neon and argon by positive alkali ions has been extended to accelerating potentials as high as 2000 volts. The results obtained are in good quantitative agreement with the previous work at the low potentials. In a number of cases the efficiency of ionization reaches a maximum at accelerating potentials less than 2000 volts.

J. Carlisle Mouzon

1932-09-01T23:59:59.000Z

377

Luminescence of argon in a spatially stabilized mono-filamentary dielectric barrier micro-discharge: spectroscopic and kinetic analysis  

Science Journals Connector (OSTI)

The experimental work reported here is devoted to the temporal behaviour of a mono-filamentary dielectric barrier discharge in pure argon, from 100 to 700?Torr. A sinusoidal voltage supply is used, its frequency ranging from 10 to 90?kHz. An anode avalanche followed by a cathode streamer as well as the spatial stability of the micro-discharge is clearly seen in successive 3-ns snapshots in the visible range. Near the cathode, its diameter is about 0.2?mm, at 400?Torr. The electrical characteristics of the discharge are also evaluated, in particular the breakdown voltage and the energy deposited in the micro-discharge. The light output in the vacuum ultraviolet range is essentially due to the second continuum of argon, centred at 130?nm. The kinetic study of this continuum shows that primary excitation of the lowest argon atomic 4s and 4s' states is practically achieved after 120?ns since beyond that time the luminescence decay of the second continuum is fairly described by only two exponential terms. So collisions between excited states, electronic collisions, and recombination of ionic species do not contribute significantly to this luminescence, after 120?ns. Surprisingly, we do not observe the contribution of the Ar(3P1) resonant state in the production of the argon excimers. The radiative lifetime of the Ar2[1u(3P2)]low v excimer ((3.18 ± 0.03)?µs) and the three-body rate constant relative to the decay of the Ar(3P2) metastable state ((13.2 ± 0.9)?Torr?2?s?1) leading to the formation of Ar2[1u(3P2)], are estimated. These results are consistent with those found from the literature. A simple kinetic scheme is proposed for times later than 120?ns.

N Merbahi; N Sewraj; F Marchal; Y Salamero; P Millet

2004-01-01T23:59:59.000Z

378

Liquid sampling system  

DOE Patents [OSTI]

A conduit extends from a reservoir through a sampling station and back to the reservoir in a closed loop. A jet ejector in the conduit establishes suction for withdrawing liquid from the reservoir. The conduit has a self-healing septum therein upstream of the jet ejector for receiving one end of a double-ended cannula, the other end of which is received in a serum bottle for sample collection. Gas is introduced into the conduit at a gas bleed between the sample collection bottle and the reservoir. The jet ejector evacuates gas from the conduit and the bottle and aspirates a column of liquid from the reservoir at a high rate. When the withdrawn liquid reaches the jet ejector the rate of flow therethrough reduces substantially and the gas bleed increases the pressure in the conduit for driving liquid into the sample bottle, the gas bleed forming a column of gas behind the withdrawn liquid column and interrupting the withdrawal of liquid from the reservoir. In the case of hazardous and toxic liquids, the sample bottle and the jet ejector may be isolated from the reservoir and may be further isolated from a control station containing remote manipulation means for the sample bottle and control valves for the jet ejector and gas bleed. 5 figs.

Larson, L.L.

1984-09-17T23:59:59.000Z

379

Liquid sampling system  

DOE Patents [OSTI]

A conduit extends from a reservoir through a sampling station and back to the reservoir in a closed loop. A jet ejector in the conduit establishes suction for withdrawing liquid from the reservoir. The conduit has a self-healing septum therein upstream of the jet ejector for receiving one end of a double-ended cannula, the other end of which is received in a serum bottle for sample collection. Gas is introduced into the conduit at a gas bleed between the sample collection bottle and the reservoir. The jet ejector evacuates gas from the conduit and the bottle and aspirates a column of liquid from the reservoir at a high rate. When the withdrawn liquid reaches the jet ejector the rate of flow therethrough reduces substantially and the gas bleed increases the pressure in the conduit for driving liquid into the sample bottle, the gas bleed forming a column of gas behind the withdrawn liquid column and interrupting the withdrawal of liquid from the reservoir. In the case of hazardous and toxic liquids, the sample bottle and the jet ejector may be isolated from the reservoir and may be further isolated from a control station containing remote manipulation means for the sample bottle and control valves for the jet ejector and gas bleed.

Larson, Loren L. (Idaho Falls, ID)

1987-01-01T23:59:59.000Z

380

Characterization of a Spherical Proportional Counter in argon-based mixtures  

E-Print Network [OSTI]

The Spherical Proportional Counter is a novel type of radiation detector, with a low energy threshold (typically below 100 eV) and good energy resolution. This detector is being developed by the network NEWS, which includes several applications. We can name between many others Dark Matter searches, low level radon and neutron counting or low energy neutrino detection from supernovas or nuclear reactors via neutrino-nucleus elastic scattering. In this context, this works will present the characterization of a spherical detector of 1 meter diameter using two argon-based mixtures (with methane and isobutane) and for gas pressures between 50 and 1250 mbar. In each case, the energy resolution shows its best value in a wide range of gains, limited by the ballistic effect at low gains and by ion-backflow at high gains. Moreover, the best energy resolution shows a degradation with pressure. These effects will be discussed in terms of gas avalanche properties. Finally, the effect of an electrical field corrector in th...

Iguaz, F J; Castel, J F; Irastorza, I G

2015-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "liquid argon prototype" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


381

ARGon{sup 3}: ''3D appearance robot-based gonioreflectometer'' at PTB  

SciTech Connect (OSTI)

At the Physikalisch-Technische Bundesanstalt, the National Metrology Institute of Germany, a new facility for measuring visual appearance-related quantities has been built up. The acronym ARGon{sup 3} stands for ''3D appearance robot-based gonioreflectometer''. Compared to standard gonioreflectometers, there are two main new features within this setup. First, a photometric luminance camera with a spatial resolution of 28 {mu}m on the device under test (DUT) enables spatially high-resolved measurements of luminance and color coordinates. Second, a line-scan CCD-camera mounted to a spectrometer provides measurements of the radiance factor, respectively the bidirectional reflectance distribution function, in full V({lambda})-range (360 nm-830 nm) with arbitrary angles of irradiation and detection relative to the surface normal, on a time scale of about 2 min. First goniometric measurements of diffuse reflection within 3D-space above the DUT with subsequent colorimetric representation of the obtained data of special effect pigments based on the interference effect are presented.

Hoepe, A.; Atamas, T.; Huenerhoff, D.; Teichert, S.; Hauer, K.-O. [Physikalisch-Technische Bundesanstalt (PTB), Bundesallee 100, 38116 Braunschweig (Germany)

2012-04-15T23:59:59.000Z

382

Effect of pulse duration on resonant heating of laser-irradiated argon and deuterium clusters  

Science Journals Connector (OSTI)

We study the effect of pulse duration on the heating of single van der Waals bound argon and deuterium clusters by a strong laser field using a two-dimensional (2D) electrostatic particle-in-cell (PIC) code in the range of laser-cluster parameters such that kinetic as well as hydrodynamic effects are active. Heating is dominated by a collisionless resonant absorption process that involves energetic electrons transiting through the cluster. A size-dependent intensity threshold defines the onset of this resonance [T. Taguchi et al., Physical Review Letters, 92, 20 (2004)]. It is seen that increasing the laser pulse duration lowers this intensity threshold and the energetic electrons take multiple laser periods to transit the cluster instead of one laser period. Our simulations also show that strong electron heating is accompanied by the generation of a high-energy peak in the ion energy distribution function. We also calculate the yield of thermonuclear fusion neutrons from exploding deuterium clusters using the PIC model with periodic boundary conditions that allows for the interaction of ions from neighboring clusters.

Ayush Gupta; T. M. Antonsen; T. Taguchi; J. Palastro

2006-10-25T23:59:59.000Z

383

Structure of the Surface Streamers of an AC Barrier Corona in Argon  

SciTech Connect (OSTI)

Results are presented from experimental studies of the structure of an ac surface discharge excited by a metal needle over a plane dielectric surface. A barrier corona discharge was ignited in atmospheric-pressure argon at frequencies of the applied sinusoidal voltage from 50 Hz to 30 kHz. In experiments, the area of a dielectric covered with the discharge plasma increased with applied voltage. The discharge structure in diffuse and streamer modes was recorded using a digital camera and a high-speed image tube operating in a frame mode. It is found that, in the positive and negative half-periods of the applied voltage, the structure of the surface discharge is substantially different. The statistical characteristics of the branching surface streamers in the positive and negative half-periods are determined as functions of the voltage frequency. The most intense lines in the emission spectrum of the barrier corona are determined for both half-periods. The correlation between the dynamics of the emission intensity and the dynamics of the discharge current and voltage is investigated.

Akishev, Yu.S.; Aponin, G.I.; Karal'nik, V.B.; Monich, A.E.; Trushkin, N.I. [Troitsk Institute for Innovation and Fusion Research, Troitsk, Moscow oblast, 142190 (Russian Federation)

2004-12-15T23:59:59.000Z

384

The solubility of neon, nitrogen and argon in distilled water and seawater  

Science Journals Connector (OSTI)

Large discrepancies in published neon and nitrogen solubility data limit the interpretation of oceanic measurements of these gases. We present new solubility measurements for neon, nitrogen and argon in distilled water and seawater, over a temperature range of 1– 30 ? C . Water was equilibrated with air at measured temperatures, salinities and pressures. Dissolved Ne concentrations were then determined by isotope dilution using a quadrupole mass spectrometer. Ratios of O 2 / N 2 / Ar were measured on a stable isotope ratio mass spectrometer, from which absolute N 2 and Ar concentrations were calculated using published O 2 solubilities. We propose new equations, fitted to the data, for the equilibrium concentrations of Ne, N 2 and Ar with estimated errors of 0.30%, 0.14% and 0.13%, respectively. The Ar results matched those of most previous researchers within 0.4%. However, the Ne and N 2 results were greater by 1% or more than those of Weiss (J. Chem. Eng. Data 16(2) (1971b) 235, Deep-Sea Res. 17(4) (1970) 721).

Roberta C. Hamme; Steven R. Emerson

2004-01-01T23:59:59.000Z

385

Silicon nanoparticle synthesis by short-period thermal anneals at atmospheric pressure in argon  

SciTech Connect (OSTI)

Silicon nanoparticles have been studied for a wide variety of applications including nanoelectronic, photovoltaic, and optoelectronic devices. In this work, silicon nanoparticles were synthesized by short-period annealing of silicon-on-insulator substrates to temperatures ranging between 600 and 900 deg. C in argon gas at atmospheric pressure. Two different top silicon layers were deposited by ion-beam sputtering onto oxidized substrates. The thinner 6 nm top layer samples were annealed to temperatures for 30 s periods while thicker 15 nm top layer samples were annealed for 60 s periods. For both sets of samples, nanoparticles were observed to form at all the anneal temperatures through imaging by AFM. One long-period UHV anneal study, with 30-min anneal times, observed nanoparticle formation at temperatures similar to the current work while another similar long-period UHV anneal reported nanoparticle formation only above well-defined formation temperatures that depended upon the starting top layer thickness. In the current work, the average nanoparticle radius was found to increase both with the final anneal temperature and anneal period. For the highest anneal temperatures of the 6 nm top layer samples, a changing surface topography indicated that the thinner Si source layer was becoming depleted and the nanoparticle formation process was nearing completion. No such changes were observed for the thicker 15 nm samples at the same temperatures.

Spencer, Gregory; Anyamesem-Mensah, Benedict; Galloway, Heather C.; Bandyopadhyay, Anup; Frasier, Daniel [Department of Physics, Texas State University-San Marcos, San Marcos, Texas 78666 (United States); Department of Materials Science and Engineering, University of North Texas, Denton, Texas 76207 (United States); Department of Physics, Texas State University-San Marcos, San Marcos, Texas 78666 (United States)

2011-09-15T23:59:59.000Z

386

Liquid-level detector  

DOE Patents [OSTI]

Aliquid level sensor is described which has a pair of upright conductors spaced by an insulator defining a first high resistance path between the conductors. An electrically conductive path is interposed between the upright conductors at a discrete location at which liquid level is to be measured. It includes a liquid accessible gap of a dimension such that the electrical resistance across the conductor when the gap is filled with the liquid is detectably less than when the gap is emptied. The conductor might also be physically altered by temperature changes to serve also as an indicator of elevated temperature.

Not Available

1981-01-29T23:59:59.000Z

387

Liquid metal electric pump  

DOE Patents [OSTI]

An electrical pump for pumping liquid metals to high pressures in high temperature environments without the use of magnets or moving mechanical parts. The pump employs a non-porous solid electrolyte membrane, typically ceramic, specific to the liquid metal to be pumped. A DC voltage is applied across the thickness of the membrane causing ions to form and enter the membrane on the electrically positive surface, with the ions being neutralized on the opposite surface. This action provides pumping of the liquid metal from one side of the non-porous solid electrolyte membrane to the other. 3 figs.

Abbin, J.P.; Andraka, C.E.; Lukens, L.L.; Moreno, J.B.

1992-01-14T23:59:59.000Z

388

Renewable Liquid Fuels Reforming  

Broader source: Energy.gov [DOE]

The Program anticipates that distributed reforming of biomass-derived liquid fuels could be commercial during the transition to hydrogen and used in the mid- and long-term time frames.

389

The effects of a controlled energy storage and return prototype prosthetic foot on transtibial amputee ambulation  

E-Print Network [OSTI]

during early stance, increased prosthetic foot peak push-off power and work, increased prosthetic limbThe effects of a controlled energy storage and return prototype prosthetic foot on transtibial a prototype microprocessor- controlled prosthetic foot designed to store some of the energy during loading

Collins, Steven H.

390

HighFidelity Rapid Prototyping of 300mm Fabs through Discrete Event System Modeling #  

E-Print Network [OSTI]

High­Fidelity Rapid Prototyping of 300mm Fabs through Discrete Event System Modeling # Jonghun Park and control. Keywords: High­fidelity modeling, 300mm Fab, Flexible Automation, Colored Petri Nets, Web­based Simulation, Rapid Prototyping # A preliminary version of this paper appeared in [28]. + Corresponding author

Reveliotis, Spiridon "Spyros"

391

Effective Prototyping with Excel: A practical handbook for developers and designers  

Science Journals Connector (OSTI)

Although recognized as a key to the design process, prototyping often falls victim to budget cuts, deadlines, or lack of access to sophisticated tools. This can lead to sloppy and ineffective prototypes or the abandonment of them altogether. Rather than ... Keywords: Computer Graphics, Computer Science, Internet, User Interfaces

Nevin Berger; Michael Arent; Jonathan Arnowitz; Fred Sampson

2009-01-01T23:59:59.000Z

392

Rapid Prototyping: energy and environment in the Pascal MOGNOL, Denis LEPICART, Nicolas PERRY  

E-Print Network [OSTI]

of energy and to decrease consumption. For this, the alternative production of energy (wind turbine, solarRapid Prototyping: energy and environment in the spotlight Pascal MOGNOL, Denis LEPICART, Nicolas Prototyping environmental aspects: first focus on the electrical energy consumption. Design

Boyer, Edmond

393

A novel diagnostic for time-resolved spectroscopic argon and lithium density measurements  

E-Print Network [OSTI]

, and easily assembled. Due to the high ionization efficiency of the hollow cathode/anode geometry, relatively and metal vapor densities over a wide pressure range with high time resolution is described. A compact are difficult to obtain. In the framework of the IFE liquid chambers vapor clearing and condensation study

Abdou, Mohamed

394

Wave-Energy Company Looks to Test Prototypes in Maine Waters | Department  

Broader source: Energy.gov (indexed) [DOE]

Wave-Energy Company Looks to Test Prototypes in Maine Waters Wave-Energy Company Looks to Test Prototypes in Maine Waters Wave-Energy Company Looks to Test Prototypes in Maine Waters April 9, 2010 - 4:19pm Addthis Lindsay Gsell Resolute Marine Energy - a Boston-based, wave-energy technology company - hopes to test ocean wave energy conversion prototypes in Maine sometime in the summer of 2011. The company has already completed two of the three testing stages, the first using computer simulation and the second with reduced-scale prototypes in a controlled environment. Now, the company is ready to take the technology offshore to begin ocean testing. Its eyes are set on the waters of its Northern neighbor, Maine. Maine is an ideal location for Resolute Marine Energy to conduct testing for a few reasons, said CEO and President Bill Staby. Working in Maine

395

Passive solar strategies as a logic for improved architectural design: Two prototypes for modular housing  

SciTech Connect (OSTI)

This paper presents a project in which two passive solar housing prototypes were developed for mass production as modular housing. The prototypes have been built and are currently being marketed and thermally monitored. The project received support from the U.S. DOE under its Passive Solar Manufactured Buildings Program. The goal of this project was to develop a prototype which incorporated passive solar technologies into modular housing. Because modular housing is an industrialized product, this incorporation involved relating to a construction process as well as deriving the design of a new product. This paper addresses the issues of modular housing production that impact energy efficiency, passive solar design, and architectural quality. The product's design evolution is described, with emphasis upon how solutions for the prototype(s) were derived in response to factory construction processes, cost, existing and potential markets and the extended goal to improve both energy efficiency and architectural design while introducing passive solar strategies.

Reeder, B.C.

1983-12-01T23:59:59.000Z

396

Laboratory evaluation of the IriScan prototype biometric identifier  

SciTech Connect (OSTI)

One thing that all access control applications have in common is the need to identify those individuals authorized to gain access to an area. Traditionally, the identification is based on something that person possesses, such as a key or badge, or something they know, such as a PIN or password. Biometric identifiers make their decisions based on the physiological or behavioral characteristics of individuals. The potential of biometrics devices to positively identify individuals has made them attractive for use in access control and computer security applications. However, no systems perform perfectly, so it is important to understand what a biometric device`s performance is under real world conditions before deciding to implement one in an access control system. This paper will describe the evaluation of a prototype biometric identifier provided by IriScan Incorporated. This identifier was developed to recognize individual human beings based on the distinctive visual characteristics of the irises of their eyes. The main goal of the evaluation was to determine whether the system has potential as an access control device within the Department of Energy (DOE). The primary interest was an estimate of the accuracy of the system in terms of false accept and false reject rates. Data was also collected to estimate throughput time and user acceptability. The performance of the system during the test will be discussed. Lessons learned during the test which may aid in further testing and simplify implementation of a production system will also be discussed.

Bouchier, F.; Ahrens, J.S.; Wells, G.

1996-04-01T23:59:59.000Z

397

Hanford prototype-barrier status report: FY 1995  

SciTech Connect (OSTI)

Surface barriers (or covers) have been proposed for use at the Hanford Site as a means to isolate certain waste sites that, for reasons of cost or worker safety or both, may not be exhumed. Surface barriers are intende to isolated the wastes from the accessible environment and to provide long-term protection to future populations that might use the Hanford Site. Currently, no ``proven`` long-term barrier system is available. For this reason, the Hanford Site Permanent Isolation Surface-Barrier Development Program (BDP) was organized to develop the technology needed to provide long-term surface barrier capability for the Hanford Site for the US Department of Energy (DOE). Designs have been proposed to meet the most stringent needs for long-term waste disposal. The objective of the current barrier design is to use natural materials to develop a protective barrier system that isolates wastes for at least 1000 years by limiting water, plant, animal, and human intrusion; and minimizing erosion. The design criteria for water drainage has been set at 0.5 mm/yr. While other design criteria are more qualitative, it is clear that waste isolation for an extended time is the prime objective of the design. Constructibility and performance. are issues that can be tested and dealt with by evaluating prototype designs prior to extensive construction and deployment of covers for waste sites at Hanford.

Gee, G.W.; Ward, A.L.; Gilmore, B.G.; Ligotke, M.W.; Link, S.O.

1995-11-01T23:59:59.000Z

398

Development and Testing of the NIF Prototype Module  

SciTech Connect (OSTI)

The NIF Power Conditioning System (PCS) is required to deliver -68 kJ to each of the 3840 flashlamp pairs in the NIF laser in a current pulse with a peak of -500 kA and rise time of- 150 µs. The PCS will consist of 192 modules each of which drive 20 lamp-pairs. Each module will basically be a 6 rnF capacitor bank with a nominal charge voltage of 23.5 kV which is switched by a single pressurized air gas switch to 20 RG-220 cables that are connected to individual lamp loads. In addition each module will have a number of subsystems including; a lamp pre-ionization system, power supplies, isolation circuits, trigger systems, safety dump systems, gas system, and an embedded control system. A module will also include components whose primary function is to limit fault currents and thus minimize collateral damage in faults. In the Prototype Development and Testing effort at Sandia National Laboratories all of these were integrated into a single system and proper fimctionality was demonstrated. Extensive testing was done at nominal operating levels into resistive dummy loads and some testing in fault modes was also done. A description of the system and a summary of testing is given in this paper.

Adcock, J.; Harjes, C.; Mowrer, G.; Wilson, M.

1999-06-25T23:59:59.000Z

399

A prototype station for ARIANNA: a detector for cosmic neutrinos  

SciTech Connect (OSTI)

The Antarctic Ross Iceshelf Antenna Neutrino Array (ARIANNA) is a proposed detector for ultra-high energy astrophysical neutrinos. It will detect coherent radio Cherenkov emission from the particle showers produced by neutrinos with energies above about 1017 eV. ARIANNA will be built on the Ross Ice Shelf just off the coast of Antarctica, where it will eventually cover about 900 km2 in surface area. There, the ice-water interface below the shelf reflects radio waves, giving ARIANNA sensitivity to downward going neutrinos and improving its sensitivity to horizontally incident neutrinos. ARIANNA detector stations will each contain 4-8 antennas which search for brief pulses of 50 MHz to 1 GHz radio emission from neutrino interactions. We describe a prototype station for ARIANNA which was deployed in Moore's Bay on the Ross Ice Shelf in December 2009, discuss the design and deployment, and present some initial figures on performance. The ice shelf thickness was measured to be 572 +- 6 m at the deployment site.

Gerhardt, L.; Klein, S.; Stezelberger, T.; Barwick, S.; Dookayka, K.; Hanson, J.; Nichol, R.

2010-05-27T23:59:59.000Z

400

Phase errors and predicted spectral performance of a prototype undulator  

SciTech Connect (OSTI)

A prototype undulator has been used to study different magnetic end-configurations and shimming techniques for straightening the beam trajectory. Field distributions obtained by Hall probe measurements were analyzed in terms of trajectory, phase errors, and on-axis brightness for the purpose of correlating predicted spectral intensity with the calculated phase errors. Two device configurations were analyzed. One configuration had a full-strength first magnet at each end and the next-to-last pole was recessed to make the trajectory through the middle of the undulator parallel to the undulator axis. For the second configuration, the first permanent magnet at each end was replaced by a half-strength magnet to reduce the trajectory displacement and the next-to-last pole was adjusted appropriately, and shims were added to straighten the trajectory. Random magnetic field errors can cause trajectory deviations that will affect the optimum angle for viewing the emitted radiation, and care must be taken to select the appropriate angle when calculating the phase errors. This angle may be calculated from the average trajectory angle evaluated at the location of the poles. For the second configuration, we find an rms phase error of less than 3{degrees} and predict 87% of the ideal value of the on-axis brightness for the third harmonic. We have also analyzed the gap dependence of the phase errors and spectral brightness and have found that the rms phase error remain small at all gap settings.

Dejus, R.J.; Vassrman, I.; Moog, E.R.; Gluskin, E.

1994-08-01T23:59:59.000Z

Note: This page contains sample records for the topic "liquid argon prototype" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


401

Frostbite Theater - Liquid Nitrogen Experiments - Dry Ice vs. Liquid  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Egg + Liquid Nitrogen + Time-lapse! Egg + Liquid Nitrogen + Time-lapse! Previous Video (Egg + Liquid Nitrogen + Time-lapse!) Frostbite Theater Main Index Next Video (Liquid Nitrogen Cooled Dry Ice in Water!) Liquid Nitrogen Cooled Dry Ice in Water! Dry Ice vs. Liquid Nitrogen! Dry ice is cold. Liquid nitrogen is cold, too. What happens when the two are mixed together? [ Show Transcript ] Announcer: Frostbite Theater presents... Cold Cuts! No baloney! Joanna and Steve: Just science! Joanna: Hi! I'm Joanna! Steve: And I'm Steve! Joanna: Have you ever wondered what happens when you mix dry ice and liquid nitrogen? Steve: Well, we just happen to have a chunk of dry ice left over from when we filmed 'How to Make a Cloud Chamber,' and here at Jefferson Lab, liquid nitrogen flows like water, so we're going to find out!

402

Short-term agricultural financial analysis expert system: prototype development  

E-Print Network [OSTI]

and sources and uses of cash statements. The techniques used in this model to analyze position and performance are the use of 27 financial ratios and the trends in these ratios. The evaluation is broken down into six decision criteria and each criterion... A set of six decision criteria have been determined to be important in the evaluation of the farm/ranch's ability to support operating credit (refer to Table 5). A description of each criterion and the measures used are provided below. Liquidity...

Karkosh, Kedric Lee

2012-06-07T23:59:59.000Z

403

Liquid Hydrogen in Protonic Chabazite  

Science Journals Connector (OSTI)

1,5,6 Today, the prototype hydrogen vehicles use space-demanding tanks with compressed gas. ... aerogela ... hydrogen (LH2) storage in terms of vol., vehicle range, dormancy, energy required for fuel processing, and cost. ...

Adriano Zecchina; Silvia Bordiga; Jenny G. Vitillo; Gabriele Ricchiardi; Carlo Lamberti; Giuseppe Spoto; Morten Bjřrgen; Karl Petter Lillerud

2005-04-12T23:59:59.000Z

404

Evaluation of bone response to synthetic bone grafting material treated with argon-based atmospheric pressure plasma  

Science Journals Connector (OSTI)

Abstract Bone graft materials are utilized to stimulate healing of bone defects or enhance osseointegration of implants. In order to augment these capabilities, various surface modification techniques, including atmospheric pressure plasma (APP) surface treatment, have been developed. This in vivo study sought to assess the effect of APP surface treatment on degradation and osseointegration of Synthograft™, a beta-tricalcium phosphate (?-TCP) synthetic bone graft. The experimental (APP-treated) grafts were subjected to APP treatment with argon for a period of 60 s. Physicochemical characterization was performed by environmental scanning electron microscopy, surface energy (SE), and x-ray photoelectron spectroscopy analyses both before and after APP treatment. Two APP-treated and two untreated grafts were surgically implanted into four critical-size calvarial defects in each of ten New Zealand white rabbits. The defect samples were explanted after four weeks, underwent histological analysis, and the percentages of bone, soft tissue, and remaining graft material were quantified by image thresholding. Material characterization showed no differences in particle surface morphology and that the APP-treated group presented significantly higher SE along with higher amounts of the base material chemical elements on it surface. Review of defect composition showed that APP treatment did not increase bone formation or reduce the amount of soft tissue filling the defect when compared to untreated material. Histologic cross-sections demonstrated osteoblastic cell lines, osteoid deposition, and neovascularization in both groups. Ultimately, argon-based APP treatment did not enhance the osseointegration or degradation of the ?-TCP graft. Future investigations should evaluate the utility of gases other than argon to enhance osseointegration through APP treatment.

Bryan G. Beutel; Natalie R. Danna; Riddhi Gangolli; Rodrigo Granato; Lakshmiprada Manne; Nick Tovar; Paulo G. Coelho

2014-01-01T23:59:59.000Z

405

Ramp-rate sensitivity of SSC dipole magnet prototypes  

SciTech Connect (OSTI)

One of the major achievements of the magnet R&D program for the Superconducting Super Collider (SSC) is the fabrication and test of a series of 20 5-cm aperture, 15-m long dipole magnet prototypes. The ramp rate sensitivity of these magnets appears to fall in at least two categories that can be correlated to the manufacturer and production batch of the strands used for the inner-coil cables. The first category, referred to as type-A, is characterized by a strong quench current degradation at high ramp rates, usually accompanied by large distortions of the multipole fields and large energy losses. The second category, referred to as type-B, is characterized by a sudden drop of quench current at low ramp rates, followed by a much milder degradation at larger rates. The multipole fields of the type-B magnets show little ramp-rate sensitivity, and the energy losses are smaller than for the type-A magnets. The behavior of the Type-A magnets can be explained in terms of inter-strand eddy currents arising from low and non-uniform resistances at the crossovers between the strands of the two-layer Rutherford-type cable. Anomalies in the transport-current repartition among the cable strands are suggested as a possible cause for the type-B behavior. The origins of these anomalies have not yet been clearly identified. The SSC project was canceled by decision of the United States Congress on October 21, 1994.

Devred, A.; Ogitsu, T.

1994-07-01T23:59:59.000Z

406

LCA study and testing of a photovoltaic ceramic tile prototype  

Science Journals Connector (OSTI)

Abstract The article describes the analysis of the environmental impact of a Building Integrated PhotoVoltaics (BIPV) module developed within the research project “BIPV-Building Integrated Photovoltaics, Piastrelle ceramiche fotovoltaiche per involucri edilizi sostenibili”. The aim of the project is the development and the implementation of photovoltaic BIPV ceramic modules to be used in buildings for the construction of active envelopes. In particular, one of the research lines of the project involves the construction of BIPV ceramic modules by depositing a thin film of amorphous silicon on a ceramic support. Research and development activities previously carried out by the Ceramic Centre of Bologna in collaboration with other companies have led to the production of prototype of a ceramic photovoltaic module. The project aims to the optimization and the industrialization of the module. Other BIPV modules (for example made on glass sheets) have been used in the construction industry for over 20 years as an integral part of the building, in both horizontal (roofs and skylights) and vertical components (facades). The use of these modules allows the realization of active technical elements, reducing the use of raw materials. The environmental impact assessment of the BIPV ceramic module was conducted through the life-cycle approach, in accordance with the international standards of the ISO 14040 series, in order to define the eco-profile, identifying the processes with the greatest impacts and suggesting improvements. The environmental profile thus obtained was then compared with that of other photovoltaic modules, in order to assess the environmental performance compared to existing technologies.

Lorenzo Belussi; Matteo Mariotto; Italo Meroni; Chiara Zevi; Sandra Dei Svaldi

2015-01-01T23:59:59.000Z

407

Liquid Scintillator Purification  

SciTech Connect (OSTI)

The KamLAND collaboration has studied background requirements and purification methods needed to observe the 7Be neutrino from the sun. First we will discuss the present background situation in KamLAND where it is found that the main background components are 210Pb and 85Kr. It is then described how to purify the liquid scintillator. The present status and results on how to remove 210Pb from the liquid scintillator are discussed. Specifically, the detailed analysis of the effects of distillation and adsorption techniques are presented.

Kishimoto, Y. [Research Center for Neutrino Science, Tohoku University (Japan)

2005-09-08T23:59:59.000Z

408

Detailed design, fabrication and testing of an engineering prototype compensated pulsed alternator. Final report  

SciTech Connect (OSTI)

The design, fabrication, and test results of a prototype compensated pulsed alternator are discussed. The prototype compulsator is a vertical shaft single phase alternator with a rotating armature and salient pole stator. The machine is designed for low rep rate pulsed duty and is sized to drive a modified 10 cm Beta amplifier. The load consists of sixteen 15 mm x 20 mm x 112 cm long xenon flashlamps connected in parallel. The prototype compulsator generates an open circuit voltage of 6 kV, 180 Hz, at a maximum design speed of 5400 rpm. At maximum speed, the inertial energy stored in the compulsator rotor is 3.4 megajoules.

Bird, W.L. Jr.; Woodson, H.H.

1980-03-01T23:59:59.000Z

409

List of issues for next dynamic window prototype/longer-term research  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

075 075 A First-Generation Prototype Dynamic Residential Window Christian Kohler, Howdy Goudey, and Dariush Arasteh Windows and Daylighting Group Lawrence Berkeley National Laboratory Berkeley CA 94720 October 26, 2004 Abstract We present the concept for a "smart" highly efficient dynamic window that maximizes solar heat gain during the heating season and minimizes solar heat gain during the cooling season in residential buildings. We describe a prototype dynamic window that relies on an internal shade, which deploys automatically in response to solar radiation and temperature. This prototype was built at Lawrence Berkeley National Laboratory from commercially available "off-the-shelf" components. It is a stand-alone, standard-size

410

Frostbite Theater - Liquid Nitrogen Experiments - Liquid Nitrogen in a  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Freeze Liquid Nitrogen! Freeze Liquid Nitrogen! Previous Video (Let's Freeze Liquid Nitrogen!) Frostbite Theater Main Index Next Video (Freeze the Rainbow!) Freeze the Rainbow! Liquid Nitrogen in a Microwave! What happens when the world's most beloved cryogenic liquid meets one of the most common household appliances? Find out when we try to microwave liquid nitrogen! [ Show Transcript ] Announcer: Frostbite Theater presents... Cold Cuts! No baloney! Joanna and Steve: Just science! Joanna: Hi! I'm Joanna! Steve: And I'm Steve! Joanna: A little while ago we received an email from Star of the Sea Catholic School in Virginia Beach, Virginia, asking what happens when you place liquid nitrogen in a microwave. Well, I just happen to have some liquid nitrogen! Steve: And I just happen to have a microwave!

411

Lyophilic liquid porosimetry and a new liquid autoporosimeter  

SciTech Connect (OSTI)

Lyophilic liquid porosimetry determines the volumes of different size pores by measuring the amount of liquid in these pores, thus, providing pore volume distribution (PVD) data for porous structures. Any liquid that wets the sample may be used. This opens unique opportunities for porous structure evaluation. It provides realistic PVD analysis when the liquid of interest changes the porous structure. It determines uptake/drainage hysteresis of real liquids. It allows direct measurements of uptake and retention capillary pressures with different amounts of liquid in a sample. Lyophilic liquid porosimetry determines liquid/solid contact angles of different size pores within the sample. It can also be used for PVD analysis of both soft, brittle materials and porous metal materials.

Tyomkin, I. [TRI/Princeton, NJ (United States)

1998-12-31T23:59:59.000Z

412

Design, fabrication and testing of a liquid hydrogen fuel tank for a long duration aircraft  

Science Journals Connector (OSTI)

Liquid hydrogen has distinct advantages as an aircraft fuel. These include a specific heat of combustion 2.8 times greater than gasoline or jet fuel and zero carbon emissions. It can be utilized by fuel cells turbine engines and internal combustion engines. The high heat of combustion is particularly important in the design of long endurance aircraft with liquid hydrogen enabling cruise endurance of several days. However the mass advantage of the liquid hydrogen fuel will result in a mass advantage for the fuel system only if the liquid hydrogen tank and insulation mass is a small fraction of the hydrogen mass. The challenge is producing a tank that meets the mass requirement while insulating the cryogenic liquid hydrogen well enough to prevent excessive heat leak and boil off. In this paper we report on the design fabrication and testing of a liquid hydrogen fuel tank for a prototype high altitude long endurance (HALE) demonstration aircraft. Design options on tank geometry tank wall material and insulation systems are discussed. The final design is an aluminum sphere insulated with spray on foam insulation (SOFI). Several steps and organizations were involved in the tank fabrication and test. The tank was cold shocked helium leak checked and proof pressure tested. The overall thermal performance was verified with a boil off test using liquid hydrogen.

Gary L. Mills; Brian Buchholtz; Al Olsen

2012-01-01T23:59:59.000Z

413

Optical and electrical characterization of pulse-modulated argon atmospheric-pressure inductively coupled microplasma jets  

SciTech Connect (OSTI)

The critical parameters determining the generation of the pulse-modulated argon atmospheric-pressure inductively coupled plasma (AP-ICP) microjet were studied by varying the power, P, pulse-modulation frequency, f, and duty ratio, DR. The temporal changes in the net output power, P{sub net}, monitored between the very high frequency power supply and matching network by an rf sampler, and ArI 4s{sup '}[1/2]{sub 1}{sup O}-4p{sup '}[1/2]{sub 0} emission from the antenna were measured to elucidate the behavior of this plasma. The AP-ICP microjet, which produces high-density (0.9-1.1x10{sup 15} cm{sup -3}) nonequilibrium plasma, consists of an alumina discharge tube with the inner diameter of 0.8 mm. The generation diagram of the pulse-modulated plasma was created by having f as the horizontal axis and DR as the vertical axis while varying P up to 50 W. At f{<=}10 kHz, the plasma was generated at above the linear lines of f and DR, which indicated the existence of the critical power-off period of approximately 80 {mu}s. At f>10 kHz, the pulse-modulated plasma was produced above constant DR and almost independent of f. The time-averaged power, P, which is the product of P and DR, had to be more than 8-10 W to sustain the pulse-modulated plasma. From the measurement of the temporal changes in the net power and ArI emission, the dynamic behavior of the pulse-modulated plasma was revealed as follows. The prebreakdown period was present for {approx}5 {mu}s after the power was turned on. Once the plasma was generated, the impedance was changed and the reflected power gradually decreased. A strong emission peak was observed immediately after the breakdown, followed by the gradual increase up to the steady state. Finally, the intense afterpeak was observed at 0.8 {mu}s after the power was turned off.

Tajima, Satomi; Tsuchiya, Shouichi [Department of Bioengineering, Graduate School of Engineering, University of Tokyo, 2-11-16 Yayoi, Bunkyo-ku, Tokyo 113-8656 (Japan); Matsumori, Masashi; Nakatsuka, Shigeki [Panasonic Factory Solutions Co., Ltd., 2-7 Matsuba-cho, Kadoma-city, Osaka 571-8502 (Japan); Ichiki, Takanori [Department of Bioengineering, Graduate School of Engineering, University of Tokyo, 2-11-16 Yayoi, Bunkyo-ku, Tokyo 113-8656 (Japan); Institute of Engineering Innovation, Graduate School of Engineering, University of Tokyo, 2-11-16 Yayoi, Bunkyo-ku, Tokyo 113-8656 (Japan)

2010-10-15T23:59:59.000Z

414

Design, fabrication and testing of a 15-kW gas-fired liquid-metal evaporator  

SciTech Connect (OSTI)

This paper describes the development and testing of a compact heat- pipe heat exchanger that is designed to transfer thermal energy from hot combustion gases to the heater tubes of a 25-kW{sub e} Stirling engine. In this system, sodium evaporates from a surface that is heated by a stream of hot gases and the liquid metal then condenses on the heater tubes of a Stirling engine where energy is transferred to the engine`s helium working fluid. Recent tests on a prototype unit illustrated that a compact (8 cm {times} 13 cm {times} 16 cm) sodium evaporator can routinely transfer 15-kW{sub t} of energy at an operating vapor temperature of 760{degrees}C. Four of these prototype units will eventually be used to power a 25-kW{sub e} Stirling engine system. Design details and test results from the prototype unit are presented in this paper.

Adkins, D.R.; Rawlinson, K.S.

1992-07-01T23:59:59.000Z

415

Design, fabrication and testing of a 15-kW gas-fired liquid-metal evaporator  

SciTech Connect (OSTI)

This paper describes the development and testing of a compact heat- pipe heat exchanger that is designed to transfer thermal energy from hot combustion gases to the heater tubes of a 25-kW{sub e} Stirling engine. In this system, sodium evaporates from a surface that is heated by a stream of hot gases and the liquid metal then condenses on the heater tubes of a Stirling engine where energy is transferred to the engine's helium working fluid. Recent tests on a prototype unit illustrated that a compact (8 cm {times} 13 cm {times} 16 cm) sodium evaporator can routinely transfer 15-kW{sub t} of energy at an operating vapor temperature of 760{degrees}C. Four of these prototype units will eventually be used to power a 25-kW{sub e} Stirling engine system. Design details and test results from the prototype unit are presented in this paper.

Adkins, D.R.; Rawlinson, K.S.

1992-01-01T23:59:59.000Z

416

Viscosity of Liquids  

Science Journals Connector (OSTI)

6 November 1952 research-article Viscosity of Liquids E. N. da C. Andrade The Royal Society is collaborating with JSTOR to digitize, preserve, and extend access to Proceedings of the Royal Society of London. Series A, Mathematical and Physical Sciences. www.jstor.org

1952-01-01T23:59:59.000Z

417

The Viscosity of Liquids  

Science Journals Connector (OSTI)

... of momentum between them. In the case of a gas, Maxwell showed how the viscosity can be derived by considering this momentum as being communicated by molecules transferring themselves bodily ... fulfilment of the conditions postulated in Maxwell's treatment, and the fact that while gas viscosity goes up with temperature liquid ...

E. N. DA C. ANDRADE

1930-04-12T23:59:59.000Z

418

Detonation in Liquid Explosives  

Science Journals Connector (OSTI)

... Laboratory, on the initiative of Dr. A. H. Davis, into the process of detonation in explosives, the programme including a photographic study of the ... in explosives, the programme including a photographic study of the detonation Waves in transparent liquid explosives—the sensitivity of some of which can be varied by ...

D. CRONEY

1948-09-25T23:59:59.000Z

419

Liquid Natural Gas  

Science Journals Connector (OSTI)

Liquid Natural Gas ... IN A new technique for storing natural gas at the East Ohio Gas Co. plant, Cleveland, Ohio, the gas is liquefied before passing to the gas holders. ... Natural gas contains moisture and carbon dioxide, both of which liquefy before the natural gas and are somewhat of a nuisance because upon solidification they clog the pipes. ...

W. F. SCHAPHORST

1941-04-25T23:59:59.000Z

420

Synthesis of LaMnO{sub 3+{delta}} by firing gels with poly(acrylic acid) in a pure argon stream  

SciTech Connect (OSTI)

Perovskite-type LaMnO{sub 3+{delta}} was synthesized by firing the gels with 0.007-0.033 M of poly(acrylic acid) (PAA) in a pure argon stream. The oxygen content, crystallite size (D{sub 024}), specific surface area, and catalytic activity for CO oxidation in LaMnO{sub 3+{delta}} were measured to characterize the LaMnO{sub 3+{delta}} surface. In spite of a small specific surface area, the catalytic activity for CO oxidation on LaMnO{sub 3+{delta}} fired in the pure argon stream is twice that of LaMnO{sub 3+{delta}} fired in air. These results indicate that firing the gels in the pure argon stream improved the crystallinity (regularity of the ions) of the LaMnO{sub 3+{delta}} surface.

Taguchi, Hideki; Sugita, Akio; Nagao, Mahiko [Okayama Univ. (Japan)] [Okayama Univ. (Japan)

1996-02-01T23:59:59.000Z

Note: This page contains sample records for the topic "liquid argon prototype" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


421

Air Liquide- Biogas & Fuel Cells  

Broader source: Energy.gov [DOE]

Presentation about Air Liquide's biogas technologies and integration with fuel cells. Presented by Charlie Anderson, Air Liquide, at the NREL/DOE Biogas and Fuel Cells Workshop held June 11-13, 2012, in Golden, Colorado.

422

Prototype Detector and Chip Technology SLAC | U.S. DOE Office of Science  

Office of Science (SC) Website

Prototype Detector Prototype Detector and Chip Technology SLAC Laboratory Policy and Evaluation (LPE) LPE Home Staff M&O Contracts SC Laboratory Appraisal Process Laboratory Planning Process Work for Others in the Office of Science Laboratory Directed Research and Development (LDRD) DOE's Philosophy on LDRD Frequently Asked Questions Success Stories Brochures Additional Information LDRD Program Contacts Technology Transfer DOE National Laboratories Contact Information Laboratory Policy and Evaluation U.S. Department of Energy SC-32/Forrestal Building 1000 Independence Ave., SW Washington, DC 20585 P: (202) 586-5447 F: (202) 586-3119 Success Stories Prototype Detector and Chip Technology SLAC Print Text Size: A A A RSS Feeds FeedbackShare Page Prototype Detector and Chip Technology SLAC National Accelerator Laboratory develops effective capture for gamma

423

Development of a Digital Controller for a Vertical Wind Tunnel (VWT) Prototype to Mitigate Ball Fluctuations  

E-Print Network [OSTI]

The objective of this research was to mitigate fluctuations of a levitated ping pong ball within a vertical wind tunnel (VWT) prototype. This was made possible by remodeling the VWT system with its inherent nonlinear characteristics instead...

Silva, Ramon A.

2011-08-08T23:59:59.000Z

424

Using ARToolKit markers to build tangible prototypes and simulate other technologies  

Science Journals Connector (OSTI)

Quick prototyping of tangible user interfaces is currently hampered by availability of toolkits and the double challenge of tinkering with software and hardware. While software may be downloaded, hardware cannot. As a work-around for a class on experimental ...

Eva Hornecker; Thomas Psik

2005-09-01T23:59:59.000Z

425

Financial Analysis of Incentive Mechanisms to Promote Energy Efficiency: Case Study of a Prototypical Southwest Utility  

E-Print Network [OSTI]

rate base assets, capital expenditure and O&M budgets) asA-5. Annual capital expenditure budget for prototypicalBusiness-as-usual Capital expenditure Combined cycle gas

Cappers, Peter

2009-01-01T23:59:59.000Z

426

Design and prototype of an automated system for commercially viable production using micro contact printing  

E-Print Network [OSTI]

This dissertation is a documentation of the thought process, its justification and the implementation details that went into prototyping a fully automated system employing Micro Contact Printing, an emerging technique for ...

Chauhan, Karan

2006-01-01T23:59:59.000Z

427

DESIGN OF THE PROTOTYPICAL CRYOMODULE FOR THE EUROTRANS SUPERCONDUCTING LINAC FOR NUCLEAR WASTE  

E-Print Network [OSTI]

DESIGN OF THE PROTOTYPICAL CRYOMODULE FOR THE EUROTRANS SUPERCONDUCTING LINAC FOR NUCLEAR WASTE of the accelerator workpackage of the EUROTRANS program for the design of a nuclear waste transmutation system

Boyer, Edmond

428

Design and prototyping of a low-cost portable mechanical ventilator  

E-Print Network [OSTI]

This paper describes the design and prototyping of a low-cost portable mechanical ventilator for use in mass casualty cases and resource-poor environments. The ventilator delivers breaths by compressing a conventional ...

Powelson, Stephen K. (Stephen Kirby)

2010-01-01T23:59:59.000Z

429

X-ray Absorption Spectroscopy Study of Prototype Chemical Systems: Theory vs. Experiment  

E-Print Network [OSTI]

acids by Near Edge X-ray Absorption Fine Structure (NEXAFS)X-ray Absorption Spectroscopy Study of Prototype ChemicalGlaeser Spring 2010 X-ray Absorption Spectroscopy Study of

Schwartz, Craig Philip

2010-01-01T23:59:59.000Z

430

Liquid metal thermal electric converter  

DOE Patents [OSTI]

A liquid metal thermal electric converter which converts heat energy to electrical energy. The design of the liquid metal thermal electric converter incorporates a unique configuration which directs the metal fluid pressure to the outside of the tube which results in the structural loads in the tube to be compressive. A liquid metal thermal electric converter refluxing boiler with series connection of tubes and a multiple cell liquid metal thermal electric converter are also provided.

Abbin, Joseph P. (Albuquerque, NM); Andraka, Charles E. (Albuquerque, NM); Lukens, Laurance L. (Albuquerque, NM); Moreno, James B. (Albuquerque, NM)

1989-01-01T23:59:59.000Z

431

High temperature liquid level sensor  

DOE Patents [OSTI]

A length of metal sheathed metal oxide cable is perforated to permit liquid access to the insulation about a pair of conductors spaced close to one another. Changes in resistance across the conductors will be a function of liquid level, since the wetted insulation will have greater electrical conductivity than that of the dry insulation above the liquid elevation.

Tokarz, Richard D. (West Richland, WA)

1983-01-01T23:59:59.000Z

432

WOLTE_8 Abstract -Workshop on Low Temperature Electronics -June 22-25, 2008 CMOS Charge amplifier for liquid argon Time Projection Chamber detectors  

E-Print Network [OSTI]

, on a system of wires at the sides of the detector, the electric charges from the ionization losses Charge) with a detector capacitance of 250pF. The distribution of charges collected by the wires which decreases with temperature. However, the circuit should dissipate as little heat as possible

Boyer, Edmond

433

A new, very massive modular Liquid Argon Imaging Chamber to detect low energy off-axis neutrinos from the CNGS beam. (Project MODULAr)  

E-Print Network [OSTI]

The paper is considering an opportunity for the CERN/GranSasso (CNGS) neutrino complex, concurrent time-wise with T2K and NOvA, to search for theta_13 oscillations and CP violation. Compared with large water Cherenkov (T2K) and fine grained scintillators (NOvA), the LAr-TPC offers a higher detection efficiency and a lower backgrounds, since virtually all channels may be unambiguously recognized. The present proposal, called MODULAr, describes a 20 kt fiducial volume LAr-TPC, following very closely the technology developed for the ICARUS-T60o, and is focused on the following activities, for which we seek an extended international collaboration: (1) the neutrino beam from the CERN 400 GeV proton beam and an optimised horn focussing, eventually with an increased intensity in the framework of the LHC accelerator improvement program; (2) A new experimental area LNGS-B, of at least 50000 m3 at 10 km off-axis from the main Laboratory, eventually upgradable to larger sizes. A location is under consideration at about 1.2 km equivalent water depth; (3) A new LAr Imaging detector of at least 20 kt fiducial mass. Such an increase in the volume over the current ICARUS T600 needs to be carefully considered. It is concluded that a very large mass is best realised with a set of many identical, independent units, each of 5 kt, "cloning" the technology of the T600. Further phases may foresee extensions of MODULAr to meet future physics goals. The experiment might reasonably be operational in about 4/5 years, provided a new hall is excavated in the vicinity of the Gran Sasso Laboratory and adequate funding and participation are made available.

B. Baibussinov; M. Baldo Ceolin; G. Battistoni; P. Benetti; A. Borio; E. Calligarich; M. Cambiaghi; F. Cavanna; S. Centro; A. G. Cocco; R. Dolfini; A. Gigli Berzolari; C. Farnese; A. Fava; A. Ferrari; G. Fiorillo; D. Gibin; A. Guglielmi; G. Mannocchi; F. Mauri; A. Menegolli; G. Meng; C. Montanari; O. Palamara; L. Periale; A. Piazzoli; P. Picchi; F. Pietropaolo; A. Rappoldi; G. L. Raselli; C. Rubbia; P. Sala; G. Satta; F. Varanini; S. Ventura; C. Vignoli

2007-04-11T23:59:59.000Z

434

Ion Distributions Near a Liquid-Liquid Interface  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Ion Distributions Near a Liquid-Liquid Interface Ion Distributions Near a Liquid-Liquid Interface Researchers from the University of Illinois at Chicago; Northern Illinois University; the University of California, Santa Cruz; and ChemMatCARS (sector 15 at the APS) used x-ray reflectivity from ion distributions at the liquid-liquid interface to provide strong evidence that the interfacial structure of a liquid alters the ion distributions near a charged interface, contrary to earlier theories about ions at charged surfaces. Coulomb's Law describes the interaction between two, otherwise isolated, point charges. If many charges are present in the region between these two charges, the net interaction between them is modified. This is commonly found in real systems, such as a plasma gas of electrons and ionized

435

Frostbite Theater - Liquid Nitrogen Experiments - Liquid Nitrogen and  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Freeze the Rainbow! Freeze the Rainbow! Previous Video (Freeze the Rainbow!) Frostbite Theater Main Index Next Video (Liquid Nitrogen and Fire!) Liquid Nitrogen and Fire! Liquid Nitrogen and Antifreeze! What happens when the freezing power of liquid nitrogen meets the antifreezing power of ethylene glycol? [ Show Transcript ] Announcer: Frostbite Theater presents... Cold Cuts! No baloney! Joanna and Steve: Just science! Joanna: Hi! I'm Joanna! Steve: And I'm Steve! Joanna: What happens when the freezing power of liquid nitrogen... Steve: ...meets the antifreezing power of ethylene glycol! Joanna: While a mix of 70 percent ethylene glycol and 30 percent water doesn't freeze until 60 degrees below zero, it's still no match for liquid nitrogen. At 321 degrees below zero, liquid nitrogen easily freezes

436

Frostbite Theater - Liquid Nitrogen Experiments - Let's Freeze Liquid  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Shattering Pennies! Shattering Pennies! Previous Video (Shattering Pennies!) Frostbite Theater Main Index Next Video (Liquid Nitrogen in a Microwave!) Liquid Nitrogen in a Microwave! Let's Freeze Liquid Nitrogen! By removing the hottest molecules, we're able to freeze liquid nitrogen! [ Show Transcript ] Announcer: Frostbite Theater presents... Cold Cuts! No baloney! Joanna and Steve: Just science! Joanna: Hi! I'm Joanna! Steve: And I'm Steve! Joanna: Today, we're going to freeze liquid nitrogen! Joanna and Steve: Yeah! Joanna: The obvious way to do this is to put the liquid nitrogen into something colder. Something that we have lots of around here! Something like... liquid helium! Steve: Yes! Joanna: Yeah, but we're not going to do that. Instead, we're going to freeze the nitrogen by removing the hottest molecules!

437

DEVELOPMENT OF PROTOTYPE TITANATE ION EXCHANGE LOADED MEMBRANES FOR STRONTIUM, CESIUM AND ACTINIDE DECONTAMINATION FROM AQUEOUS MEDIA  

SciTech Connect (OSTI)

We have successfully incorporated high surface area particles of titanate ion exchange materials (monosodium titanate and crystalline silicotitanate) with acceptable particle size distribution into porous and inert support membrane fibrils consisting of polytetrafluoroethylene (Teflon{reg_sign}), polyethylene and cellulose materials. The resulting membrane sheets, under laboratory conditions, were used to evaluate the removal of surrogate radioactive materials for cesium-137 and strontium-90 from high caustic nuclear waste simulants. These membrane supports met the nominal requirement for nonchemical interaction with the embedded ion exchange materials and were porous enough to allow sufficient liquid flow. Some of this 47-mm size stamped out prototype titanium impregnated ion exchange membrane discs was found to remove more than 96% of dissolved cesium-133 and strontium-88 from a caustic nuclear waste salt simulants. Since in traditional ion exchange based column technology monosodium titanate (MST) is known to have great affinity for the sorbing of other actinides like plutonium, neptunium and even uranium, we expect that the MST-based membranes developed here, although not directly evaluated for uptake of these three actinides because of costs associated with working with actinides which do not have 'true' experimental surrogates, would also show significant affinity for these actinides in aqueous media. It was also observed that crystalline silicotitanate impregnated polytetrafluoroethylene or polyethylene membranes became less selective and sorbed both cesium and strontium from the caustic aqueous salt simulants.

Oji, L; Keisha Martin, K; David Hobbs, D

2008-05-30T23:59:59.000Z

438

Mechanical Analysis of the 400 MHz RF-Dipole Crabbing Cavity Prototype for LHC High Luminosity Upgrade  

SciTech Connect (OSTI)

The proposed LHC high luminosity upgrade requires two crabbing systems in increasing the peak luminosity, operating both vertically and horizontally at two interaction points of IP1 and IP5. The required system has tight dimensional constraints and needs to achieve higher operational gradients. A proof-of-principle 400 MHz crabbing cavity design has been successfully tested and has proven to be an ideal candidate for the crabbing system. The cylindrical proof-of-principle rf-dipole design has been adapted in to a square shaped design to further meet the dimensional requirements. The new rf-dipole design has been optimized in meeting the requirements in rf-properties, higher order mode damping, and multipole components. A crabbing system in a cryomodule is expected to be tested on the SPS beam line prior to the test at LHC. The new prototype is required to achieve the mechanical and thermal specifications of the SPS test followed by the test at LHC. This paper discusses the detailed mechanical and thermal analysis in minimizing Lorentz force detuning and sensitivity to liquid He pressure fluctuations.

De Silva, Subashini U. [ODU; Park, HyeKyoung [ODU, JLAB; Delayen, Jean R. [ODU, JLAB; Li, Z. [SLAC

2013-12-01T23:59:59.000Z

439

Determinants of Hospital's Financial Liquidity  

Science Journals Connector (OSTI)

Abstract The purpose of the articles is to identify key factors that may affect the level of hospital's liquidity ratio. We’ve posed four research hypotheses, assuming that, the level of financial liquidity in hospitals depends on several factors (number of beds, annual income per bed, profitability ratios, debt ratio). We’ve found that: 1) there is a positive relationship between debt ratio and liquidity and profitability ratio and liquidity 2) the relationship between the size of the hospital and the financial liquidity is not statistically significant. In the study we’ve use statistical tools: Pearson's correlation coefficient, T-Student's test with Cohran-Cox's correction.

Agnieszka Bem; Katarzyna Pr?dkiewicz; Pawe? Pr?dkiewicz; Paulina Ucieklak-Je?

2014-01-01T23:59:59.000Z

440

Quantal Ising Liquid  

Science Journals Connector (OSTI)

An example is presented of a model of an amorphous quantum mechanical system, a liquid of quantal Ising spins, which can be solved exactly within certain many-body theories. Analytical solutions of the model in mean-field theory are shown to reveal a decrease in the extent of the ferromagnetic region (compared to an equivalent classical system) and the occurrence of some degree of quantum localization. Both phenomena are analyzed as a competition between quantum mechanics and the condensed phase.

Richard M. Stratt

1984-10-01T23:59:59.000Z

Note: This page contains sample records for the topic "liquid argon prototype" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


441

RHIC The Perfect Liquid  

ScienceCinema (OSTI)

Evidence to date suggests that gold-gold collisions the Relativistic Heavy Ion Collider at Brookhaven are indeed creating a new state of hot, dense matter, but one quite different and even more remarkable than had been predicted. Instead of behaving like a gas of free quarks and gluons, as was expected, the matter created in RHIC's heavy ion collisions appears to be more like a "perfect" liquid.

BNL

2009-09-01T23:59:59.000Z

442

Theory of fermion liquids  

Science Journals Connector (OSTI)

We develop a general theory of fermion liquids in spatial dimensions greater than 1. The principal method, bosonization, is applied to the cases of short- and long-range longitudinal interactions and to transverse gauge interactions. All the correlation funtions of the system may be obtained with the use of a generating functional. Short-range and Coulomb interactions do not destroy the Landau-Fermi fixed point. Non-Fermi liquid fixed points are found, however, in the cases of a super-long-range longitudinal interaction in two dimensions and transverse gauge interactions in two and three spatial dimensions. We consider in some detail the (2+1)-dimensional problem of a Chern-Simons gauge action combined with a longitudinal two-body interaction V(q)??q?y-1, which controls the density, and hence gauge, fluctuations. For y0 the interaction is relevant and the fixed point cannot be accessed by bosonization. Of special importance is the case y=0 (Coulomb interaction), which describes the Halperin-Lee-Read theory of the half-filled Landau level. We obtain the full quasiparticle propagator, which is of a marginal Fermi-liquid form. Using Ward identities, we show that neither the inclusion of nonlinear terms in the fermion dispersion nor vertex corrections alters our results: the fixed point is accessible by bosonization. As the two-point fermion Green’s function is not gauge invariant, we also invetigate the gauge-invariant density response function. Near momentum Q=2kF, in addition to the Kohn anomaly we find other nonanalytic behavior. In the appendies we present a numerical calculation of the spectral function for a Fermi liquid with Landau parameter f0?0. We also show how Kohn’s theorem is satisfied within the bosonization framework.

H.-J. Kwon; A. Houghton; J. B. Marston

1995-09-15T23:59:59.000Z

443

What constitutes a simple liquid?  

E-Print Network [OSTI]

Simple liquids are traditionally defined as many-body systems of classical particles interacting via radially symmetric pair potentials. We suggest that a simple liquid should be defined instead by the property of having strong correlation between virial and potential energy equilibrium fluctuations in the NVT ensemble. There is considerable overlap between the two definitions, but also some notable differences. For instance, in the new definition simplicity is not a property of the intermolecular potential only because a liquid is usually only strongly correlating in part of its phase diagram. Moreover, according to the new definition not all simple liquids are atomic (i.e., with radially symmetric pair potentials) and not all atomic liquids are simple. The main part of the paper motivates the new definition of liquid simplicity by presenting evidence that a liquid is strongly correlating if and only if its intermolecular interactions may be ignored beyond the first coordination shell (FCS). This is demonstrated by NVT simulations of structure and dynamics of 15 atomic and molecular model liquids with a shifted-forces cutoff placed at the first minimum of the radial distribution function. No proof is given that the chemical characterization follows from the strong correlation property, but it is shown to be consistent with the existence of isomorphs in strongly correlating liquids' phase diagram. Finally, we note that the FCS characterization of simple liquids calls into question the basis for standard perturbation theory, according to which the repulsive and attractive forces play fundamentally different roles for the physics of liquids.

Trond S. Ingebrigtsen; Thomas B. Schrřder; Jeppe C. Dyre

2011-11-15T23:59:59.000Z

444

Liquid fossil fuel technology  

SciTech Connect (OSTI)

Progress reports are presented under the following headings: (1) extraction (technology assessment, oil research, gas research); (2) liquid processing (characterization, thermodynamics, processing technology); (3) utilization (energy conservation); and (4) project integration and technology transfer. BETC publications are also listed. Some of the highlights for this period are: the Bartlesville Energy Technology Center was converted into NIPER, the National Institute for Petroleum and Energy Research on October 1, 1983; modelling of enthalpies, heat capacities and volumes of aqueous surfactant solutions began using a mass action model; a series of experiments were run on upgrading by hydrogenation SRC-II coal liquid at different degrees of severity and the products have been analyzed; heavy crude oil extracts were separated into fraction with high performance liquid chromatography by Lawrence Berkeley Laboratory and the mass spectra and electron spin resonance were determin ed; and particulates from exhaust gases of diesel engines using fire fuel types are being collected and will be analyzed by chemical methods and results will be compared with those obtained by biological assay. (ATT)

Not Available

1983-01-01T23:59:59.000Z

445

Frostbite Theater - Liquid Nitrogen Experiments - Let's Pour Liquid  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Shattering Flowers! Shattering Flowers! Previous Video (Shattering Flowers!) Frostbite Theater Main Index Next Video (Giant Koosh Ball!) Giant Koosh Ball! Let's Pour Liquid Nitrogen on the Floor! Liquid nitrogen?! On the floor?! Who's going to clean that mess up?! See what really happens when one of the world's most beloved cryogenic liquids comes into contact with a room temperature floor. [ Show Transcript ] Announcer: Frostbite Theater presents... Cold Cuts! No baloney! Joanna and Steve: Just science! Joanna: Hi! I'm Joanna! Steve: And I'm Steve! Joanna: From time to time, we spill a little liquid nitrogen! The reaction we sometimes get is.... Shannon: Did they just pour LIQUID NITROGEN on the FLOOR?!?! Joanna: Yes. Yes we did. Steve: One thing people seem to have a problem with is the mess that liquid

446

Radiation Chemistry of Ionic Liquids  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Liquids Liquids James F. Wishart, Alison M. Funston, and Tomasz Szreder in "Molten Salts XIV" Mantz, R. A., et al., Eds.; The Electrochemical Society, Pennington, NJ, (2006) pp. 802-813. [Information about the volume (look just above this link)] Abstract: Ionic liquids have potentially important applications in nuclear fuel and waste processing, energy production, improving the efficiency and safety of industrial chemical processes, and pollution prevention. Successful use of ionic liquids in radiation-filled environments will require an understanding of ionic liquid radiation chemistry. For example, characterizing the primary steps of ionic liquid radiolysis will reveal radiolytic degradation pathways and suggest ways to prevent them or mitigate their effects on the properties of the material

447

Process for preparing liquid wastes  

DOE Patents [OSTI]

A process for preparing radioactive and other hazardous liquid wastes for treatment by the method of vitrification or melting is provided for.

Oden, Laurance L. (Albany, OR); Turner, Paul C. (Albany, OR); O'Connor, William K. (Lebanon, OR); Hansen, Jeffrey S. (Corvallis, OR)

1997-01-01T23:59:59.000Z

448

Climate-Weather Modeling Studies Using a Prototype Global Cloud-System  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Climate-Weather Modeling Studies Using a Prototype Global Cloud-System Resolving Model Climate-Weather Modeling Studies Using a Prototype Global Cloud-System Resolving Model Climate-Weather Modeling Studies Using a Prototype Global Cloud-System Resolving Model PI Name: Venkatramani Balaji PI Email: balaji@princeton.edu Institution: Geophysical Fluid Dynamics Laboratory Allocation Program: ESP Allocation Hours at ALCF: 150 Million Year: 2010 to 2013 Research Domain: Earth Science We expect our understanding of the role of clouds in climate to undergo a qualitative change as the resolutions of global models begin to encompass clouds. At these resolutions, non-hydrostatic dynamics become significant and deep convective processes are resolved. We are poised at the threshold of being able to run global scale simulations that include direct, non-parameterized, simulations of deep convective clouds. The goal of this

449

Norcal Prototype LNG Truck Fleet: Final Data Report. Advanced Technology Vehicle Evaluation: Advanced Vehicle Testing Activity  

Alternative Fuels and Advanced Vehicles Data Center [Office of Energy Efficiency and Renewable Energy (EERE)]

Data Report Data Report Norcal Prototype LNG Truck Fleet: Final Data Report By Kevin Chandler, Battelle Ken Proc, National Renewable Energy Laboratory February 2005 This report provides detailed data and analyses from the U.S. Department of Energy's evaluation of prototype liquefied natural gas (LNG) waste transfer trucks operated by Norcal Waste Systems, Inc. The final report for this evaluation, published in July 2004, is available from the Alternative Fuels Data Center at www.eere.energy.gov/afdc or by calling the National Alternative Fuels Hotline at 1-800-423-1363. Request Norcal Prototype LNG Truck Fleet: Final Results, document number DOE/GO-102004-1920. i NOTICE This report was prepared as an account of work sponsored by an agency of the United States

450

Half-Wave, beta=0.43 Cavity Prototyping for a Heavy Ion Linac  

SciTech Connect (OSTI)

A medium velocity half wave resonator has been designed and prototyped at the National Superconducting Cyclotron Laboratory (NSCL) at Michigan State University (MSU) for use in a heavy ion linac. The cavity is designed to provide 3.7 MV of accelerating voltage at an optimum beta = v/c = 0.53, with peak surface electric and magnetic fields of 32.5 MV/m and 79 mT, respectively. The cavity was designed for stiffness and tunability, as well as straightforward fabrication, assembly and cleaning. Measurements were performed to confirm Finite Element Analysis (FEA) predictions for modal analysis, bath pressure sensitivity, tuner stiffness and tuning range. A copper cavity prototype has been fabricated to confirm tolerances and formability. A tuner prototype has been built. The helium vessel and power coupler have been designed.

Popielarski, John [Michigan State University; Compton, Chris C. [Michigan State University; Hartung, Walter [Michigan State University; Johnson, Mat [Michigan State University; Oliva, John [Michigan State University; York, R. C. [Michigan State University; Marti, Felix [Michigan State University

2008-04-01T23:59:59.000Z

451

PJM Controller Testing with Prototypic PJM Nozzle Configuration  

SciTech Connect (OSTI)

The U.S. Department of Energy (DOE) Office of River Protection’s Waste Treatment Plant (WTP) is being designed and built to pre-treat and then vitrify a large portion of the wastes in Hanford’s 177 underground waste storage tanks. The WTP consists of three primary facilities—pretreatment, low-activity waste (LAW) vitrification, and high-level waste (HLW) vitrification. The pretreatment facility will receive waste piped from the Hanford tank farms and separate it into a high-volume, low-activity liquid stream stripped of most solids and radionuclides and a much smaller volume of HLW slurry containing most of the solids and most of the radioactivity. Many of the vessels in the pretreatment facility will contain pulse jet mixers (PJM) that will provide some or all of the mixing in the vessels. Pulse jet mixer technology was selected for use in black cell regions of the WTP, where maintenance cannot be performed once hot testing and operations commence. The PJMs have no moving mechanical parts that require maintenance. The vessels with the most concentrated slurries will also be mixed with air spargers and/or steady jets in addition to the mixing provided by the PJMs. Pulse jet mixers are susceptible to overblows that can generate large hydrodynamic forces, forces that can damage mixing vessels or their internal parts. The probability of an overblow increases if a PJM does not fill completely. The purpose of the testing performed for this report was to determine how reliable and repeatable the primary and safety (or backup) PJM control systems are at detecting drive overblows (DOB) and charge vessel full (CVF) conditions. Testing was performed on the ABB 800xA and Triconex control systems. The controllers operated an array of four PJMs installed in an approximately 13 ft diameter × 15 ft tall tank located in the high bay of the Pacific Northwest National Laboratory (PNNL) 336 Building test facility. The PJMs were fitted with 4 inch diameter discharge nozzles representative of the nozzles to be used in the WTP. This work supplemented earlier controller tests done on PJMs with 2 inch nozzles (Bontha et al. 2007). Those earlier tests enabled the selection of appropriate pressure transmitters with associated piping and resulted in an alternate overblow detection algorithm that uses data from pressure transmitters mounted in a water flush line on the PJM airlines. Much of that earlier work was only qualitative, however, due to a data logger equipment failure that occurred during the 2007 testing. The objectives of the current work focused on providing quantitative determinations of the ability of the BNI controllers to detect DOB and CVF conditions. On both control systems, a DOB or CVF is indicated when the values of particular internal functions, called confidence values, cross predetermined thresholds. There are two types of confidence values; one based on a transformation of jet pump pair (JPP) drive and suction pressures, the other based on the pressure in the flush line. In the present testing, we collected confidence levels output from the ABB and Triconex controllers. These data were analyzed in terms of the true and noise confidence peaks generated during multiple cycles of DOB and CVF events. The distributions of peak and noise amplitudes were compared to see if thresholds could be set that would enable the detection of DOB and CVF events at high probabilities, while keeping false detections to low probabilities. Supporting data were also collected on PJM operation, including data on PJM pressures and levels, to provide direct experimental evidence of when PJMs were filling, full, driving, or overblowing.

Bontha, Jagannadha R.; Nigl, Franz; Weier, Dennis R.; Leigh, Richard J.; Johnson, Eric D.; Wilcox, Wayne A.; Pfund, David M.; Baumann, Aaron W.; Wang, Yeefoo

2009-08-21T23:59:59.000Z

452

EIS-0275: Disposal of the S1C Prototype Reactor Plant, Hanford Site, Richland, WA (Navy Document)  

Broader source: Energy.gov [DOE]

This EIS analyzes the Office of Naval Reactors (Naval Reactors) proposed action to dismantle the defueled S1C Prototype reactor plant.

453

Research & Evaluation Prototypes (REP) | U.S. DOE Office of Science (SC)  

Office of Science (SC) Website

Research & Research & Evaluation Prototypes (REP) Advanced Scientific Computing Research (ASCR) ASCR Home About Research Facilities Accessing ASCR Supercomputers Oak Ridge Leadership Computing Facility (OLCF) Argonne Leadership Computing Facility (ALCF) National Energy Research Scientific Computing Center (NERSC) Energy Sciences Network (ESnet) Research & Evaluation Prototypes (REP) Innovative & Novel Computational Impact on Theory and Experiment (INCITE) ASCR Leadership Computing Challenge (ALCC) Science Highlights Benefits of ASCR Funding Opportunities Advanced Scientific Computing Advisory Committee (ASCAC) News & Resources Contact Information Advanced Scientific Computing Research U.S. Department of Energy SC-21/Germantown Building 1000 Independence Ave., SW Washington, DC 20585 P: (301) 903-7486 F: (301)

454

A high power beam-on-target test of liquid lithium target for RIA.  

SciTech Connect (OSTI)

Experiments were conducted to demonstrate the stable operation of a windowless liquid lithium target under extreme thermal loads that are equivalent to uranium beams from the proposed Rare Isotope Accelerator (RIA) driver linac. The engineering and safety issues accompanying liquid lithium systems are first discussed. The liquid metal technology knowledge base generated primarily for fast reactors, and liquid metal cooled fusion reactors, was applied to the development of these systems in a nuclear physics laboratory setting. The use of a high energy electron beam for simulating a high power uranium beam produced by the RIA driver linac is also described. Calculations were performed to obtain energy deposition profiles produced by electron beams at up to a few MeV to compare with expected uranium beam energy deposition profiles. It was concluded that an experimental simulation using a 1-MeV electron beam would be a valuable tool to assess beam-jet interaction. In the experiments, the cross section of the windowless liquid lithium target was 5 mm x 10 mm, which is a 1/3rd scale prototype target, and the velocity of the liquid lithium was varied up to 6 m/s. Thermal loads up to 20 kW within a beam spot diameter of 1mm were applied on the windowless liquid lithium target by the 1-MeV electron beam. The calculations showed that the maximum power density and total power deposited within the target, from the electron beam, was equivalent to that of a 200-kW, 400-MeV/u uranium beam. It was demonstrated that the windowless liquid lithium target flowing at velocities as low as 1.8 m/s stably operated under beam powers up to 20 kW without disruption or excessive vaporization.

Nolen, J.; Reed, C.; Novick, V.; Specht, J.; Plotkin, P.; Momozaki,Y.; Gomes, I.

2005-08-29T23:59:59.000Z

455

Frostbite Theater - Liquid Nitrogen Experiments - Liquid Nitrogen and Fire!  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Antifreeze! Antifreeze! Previous Video (Liquid Nitrogen and Antifreeze!) Frostbite Theater Main Index Next Video (Liquid Nitrogen and the Tea Kettle Mystery!) Liquid Nitrogen and the Tea Kettle Mystery! Liquid Nitrogen and Fire! A burning candle is placed in a container of liquid nitrogen! Filmed in front of a live studio audience. Well, they were live when we started... [ Show Transcript ] Announcer: Frostbite Theater presents... Cold Cuts! No baloney! Joanna and Steve: Just science! Steve: Now, then. I'm a little bit afraid to ask this next question because I think I already know the answer, but is anyone in here feeling a little... dangerous? You're willing to take a chance? Because I am willing to do an experiment they haven't let me do since 'The Incident.' Now, because of the danger, I cannot have a volunteer. I must do this on my

456

A new Diffractometer for Studies of Liquid-Liquid Interfaces  

SciTech Connect (OSTI)

We have designed a novel, dedicated diffractometer for surface x-ray scattering studies of liquid-liquid and liquid-gas interfaces for the PETRA III High Resolution Diffraction Beamline. Using a double crystal beam-tilter in Bragg geometry this new instrument enables reflectivity and grazing incidence diffraction investigations without moving the sample, which is mechanically decoupled from the rest of the diffractometer. This design minimizes external excitation of surface vibrations, a key prerequisite for studies of liquid interfaces. The instrument operates over the energy range 6.4 keV to 30 keV, the higher energy range being optimal for penetration through liquid sample environments. Vertical momentum transfer up to q{sub z} 2.5 A{sup -1} and lateral q{sub ||} up to 4 A{sup -1}will be available.

Murphy, B. M.; Greve, M.; Runge, B.; Koops, C. T.; Elsen, A.; Stettner, J.; Magnussen, O. M. [IEAP, Christian-Albrechts-Universitaet zu Kiel, D-24098 Kiel (Germany); Seeck, O. H. [PETRA III at DESY, Notkestr. 85, D-22603 Hamburg (Germany)

2010-06-23T23:59:59.000Z

457

Frostbite Theater - Liquid Nitrogen Experiments - Cells vs. Liquid  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Superconductors! Superconductors! Previous Video (Superconductors!) Frostbite Theater Main Index Next Video (Liquid Oxygen and Fire!) Liquid Oxygen and Fire! Cells vs. Liquid Nitrogen! Let's say you've carelessly dunked your hand into a vat of liquid nitrogen and let it freeze solid. Every movie you've seen where this happens tells you that your hand will shatter like fine china should you bump it into something. If you're extremely careful, will your hand be okay once it thaws out? We'll explore this issue, using flower and onion cells rather than our hands! [ Show Transcript ] Announcer: Frostbite Theater presents... Cold Cuts! No baloney! Joanna and Steve: Just science! Joanna: Hi! I'm Joanna! Steve: And I'm Steve! Joanna: By now, we all know what happens when you place a flower in liquid

458

Under-Sodium Viewing: A Review of Ultrasonic Imaging Technology for Liquid Metal Fast Reactors  

SciTech Connect (OSTI)

This current report is a summary of information obtained in the "Information Capture" task of the U.S. DOE-funded "Under Sodium Viewing (USV) Project." The goal of the multi-year USV project is to design, build, and demonstrate a state-of-the-art prototype ultrasonic viewing system tailored for periodic reactor core in-service monitoring and maintenance inspections. The study seeks to optimize system parameters, improve performance, and re-establish this key technology area which will be required to support any new U.S. liquid-metal cooled fast reactors.

Griffin, Jeffrey W.; Peters, Timothy J.; Posakony, Gerald J.; Chien, Hual-Te; Bond, Leonard J.; Denslow, Kayte M.; Sheen, Shuh-Haw; Raptis, Paul

2009-03-27T23:59:59.000Z

459

Enhanced liquid hydrocarbon recovery process  

SciTech Connect (OSTI)

This patent describes a process for recovering liquid hydrocarbons. It comprises: injecting into a fractured subterranean formation a polymer enhanced foam comprising a polymer selected from a synthetic polymer or a biopolymer, a surfactant, an aqueous solvent and a gas, recovering liquid hydrocarbons from the formation.

Sydansk, R.D.

1992-07-14T23:59:59.000Z

460

Laboratory solvent reuse -- Liquid chromatography  

SciTech Connect (OSTI)

The objective of this work was to develop a method for reduction of waste solvent in the Process Engineering Chemistry Laboratory. The liquid chromatographs are the largest generators of explosive-contaminated waste in the laboratory. We developed a successful process for the reuse of solvents from the liquid chromatographs and demonstrated the utility of the process in the assay of hexanitrostilbene.

Quinlin, W.T.; Schaffer, C.L.

1992-11-01T23:59:59.000Z

Note: This page contains sample records for the topic "liquid argon prototype" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


461

Orifice mixing of immiscible liquids  

E-Print Network [OSTI]

measured with an Ostwald Viscosimeter relative to tap water also, All of these physical measurements were made at 83c F, the average tempera- ture noted during the runs. The liquid upon which these measurements were made were samples of the liquids...

McDonough, Joseph Aloysius

1960-01-01T23:59:59.000Z

462

Liquid-permeable electrode  

DOE Patents [OSTI]

Electrodes for use in an electrolytic cell, which are liquid-permeable and have low electrical resistance and high internal surface area are provided of a rigid, porous, carbonaceous matrix having activated carbon uniformly embedded throughout. The activated carbon may be catalyzed with platinum for improved electron transfer between electrode and electrolyte. Activated carbon is mixed with a powdered thermosetting phenolic resin and compacted to the desired shape in a heated mold to melt the resin and form the green electrode. The compact is then heated to a pyrolyzing temperature to carbonize and volatilize the resin, forming a rigid, porous structure. The permeable structure and high internal surface area are useful in electrolytic cells where it is necessary to continuously remove the products of the electrochemical reaction.

Folser, George R. (Lower Burrell, PA)

1980-01-01T23:59:59.000Z

463

Magnetically focused liquid drop radiator  

DOE Patents [OSTI]

A magnetically focused liquid drop radiator for application in rejecting energy from a spacecraft, characterized by a magnetizable liquid or slurry disposed in operative relationship within the liquid droplet generator and its fluid delivery system, in combination with magnetic means disposed in operative relationship around a liquid droplet collector of the LDR. The magnetic means are effective to focus streams of droplets directed from the generator toward the collector, thereby to assure that essentially all of the droplets are directed into the collector, even though some of the streams may be misdirected as they leave the generator. The magnetic focusing means is also effective to suppress splashing of liquid when the droplets impinge on the collector.

Botts, T.E.; Powell, J.R.; Lenard, R.

1984-12-10T23:59:59.000Z

464

Freezing of a Liquid Marble  

E-Print Network [OSTI]

In this study, we present for the first time the observations of a freezing liquid marble. In the experiment, liquid marbles are gently placed on the cold side of a Thermo-Electric Cooler (TEC) and the morphological changes are recorded and characterized thereafter. These liquid marbles are noticed to undergo a shape transition from a spherical to a flying-saucer shaped morphology. The freezing dynamics of liquid marbles is observed to be very different from that of a freezing water droplet on a superhydrophobic surface. For example, the pointy tip appearing on a frozen water drop could not be observed for a frozen liquid marble. In the end, we highlight a possible explanation for the observed morphology.

Ali Hashmi; Adam Strauss; Jie Xu

2012-07-03T23:59:59.000Z

465

Utilizing Metalized Fabrics for Liquid and Rip Detection and Localization  

SciTech Connect (OSTI)

This paper proposes a novel technique for utilizing conductive textiles as a distributed sensor for detecting and localizing liquids (e.g., blood), rips (e.g., bullet holes), and potentially biosignals. The proposed technique is verified through both simulation and experimental measurements. Circuit theory is utilized to depict conductive fabric as a bounded, near-infinite grid of resistors. Solutions to the well-known infinite resistance grid problem are used to confirm the accuracy and validity of this modeling approach. Simulations allow for discontinuities to be placed within the resistor matrix to illustrate the effects of bullet holes within the fabric. A real-time experimental system was developed that uses a multiplexed Wheatstone bridge approach to reconstruct the resistor grid across the conductive fabric and detect liquids and rips. The resistor grid model is validated through a comparison of simulated and experimental results. Results suggest accuracy proportional to the electrode spacing in determining the presence and location of discontinuities in conductive fabric samples. Future work is focused on refining the experimental system to provide more accuracy in detecting and localizing events as well as developing a complete prototype that can be deployed for field testing. Potential applications include intelligent clothing, flexible, lightweight sensing systems, and combat wound detection.

Holland, Stephen [University of Tennessee, Knoxville (UTK); Mahan, Cody [Western Kentucky University; Kuhn, Michael J [ORNL; Rowe, Nathan C [ORNL

2013-01-01T23:59:59.000Z

466

Immersive Vehicle Simulators for Prototyping, Training and Ergonomics Marcelo Kallmann1  

E-Print Network [OSTI]

Immersive Vehicle Simulators for Prototyping, Training and Ergonomics Marcelo Kallmann1 , Patrick (CRF), Human Factors - Physical Ergonomics Strada Torino, 50 - 10043 Orbassano TO - Italy {cecilia simulators allow engineers to test the car before it is built, evaluate ergonomic aspects, interior design

Kallmann, Marcelo

467

High Efficiency Spectrum Splitting Prototype Submodule Using Commercial CPV Cells (Presentation)  

SciTech Connect (OSTI)

This presentation summarizes progress on the design, fabrication and testing of a proof-of-concept, prototype spectrum splitting CPV submodule using commercial CPV cells, aimed at demonstrating an independently confirmed efficiency above 40% at STC (1000 W/m2, AM1.5D ASTM G173-03, 25 degrees C).

Keevers, M.; Lau, J.; Green, M.; Thomas, I.; Lasich, J.; King, R.; Emery, K.

2014-11-01T23:59:59.000Z

468

ccsd00004270, Prototype scintillator cell for an In-based solar  

E-Print Network [OSTI]

indium-loaded scintillator of interest for real-time low energy solar neutrino spectroscopy. First, lightccsd­00004270, version 1 ­ 16 Feb 2005 Prototype scintillator cell for an In-based solar neutrino stable over a period of > 1 y. Key words: Solar neutrinos, Indium experiment, Indium loaded scintillator

469

A REAL TIME 3D VISUALIZATION PROTOTYPE FOR INTERVENTIONAL MAGNETIC RESONANCE IMAGING  

E-Print Network [OSTI]

A REAL TIME 3D VISUALIZATION PROTOTYPE FOR INTERVENTIONAL MAGNETIC RESONANCE IMAGING JENS FISCHER.weiss@pfh.research.philips.com HEIDRUN SCHUMANN University of Rostock, Computer Science Department, D­18051 Rostock,Germany schumann radiologists during invasive and non­invasive magnetic resonance imaging. We use pre­acquired and real time

Schumann, Heidrun

470

Prototype-Based Tests for Hybrid Reactive Systems G. Hahn, J. Philipps  

E-Print Network [OSTI]

of models fits well with processes that rely on rapid, or evolutionary, proto- typing. The comparativelyPrototype-Based Tests for Hybrid Reactive Systems G. Hahn, J. Philipps Validas Model Validation AG¨unchen Germany Abstract Model-based testing relies on the use of behavior models to automatically generate

471

A prototype system for economic, environmental and sustainable optimization of a chemical complex  

E-Print Network [OSTI]

. A second application of the prototype was based on an agricultural chemical complex with ten multiple plant of the system to select an optimum configuration of plants in an agricultural chemical complex tools such as Total (full) Cost Assessment (ac- counting) (TCA), Life Cycle Assessment (LCA

Pike, Ralph W.

472

Development Plus Kinetic and Mechanistic Studies of a Prototype Supported-Nanoparticle Heterogeneous Catalyst  

E-Print Network [OSTI]

-Nanoparticle Heterogeneous Catalyst Formation System in Contact with Solution: Ir(1,5-COD)Cl/ -Al2O3 and Its Reduction by H2 to prepare the next generation of improved, supported-nanoparticle heterogeneous catalysts. It is precisely are eight criteria defining a prototype system for supported-nanoparticle heterogeneous catalyst formation

Frenkel, Anatoly

473

Preliminary versions of the MATLAB tensor classes for fast algorithm prototyping.  

SciTech Connect (OSTI)

We present the source code for three MATLAB classes for manipulating tensors in order to allow fast algorithm prototyping. A tensor is a multidimensional or Nway array. This is a supplementary report; details on using this code are provided separately in SAND-XXXX.

Bader, Brett William; Kolda, Tamara Gibson (Sandia National Laboratories, Livermore, CA)

2004-07-01T23:59:59.000Z

474

Prototype explosives-detection system based on nuclear-resonance absorption in nitrogen  

SciTech Connect (OSTI)

A prototype explosives-detection system (EDS) that was developed for experimental evaluation of a nuclear-resonance absorption technique is described. The major subsystems are a proton accelerator and beam transport, high-temperature proton target, an airline-luggage tomographic inspection station, and an image-processing/detection-alarm subsystem. The detection system performance, based on a limited experimental test, is reported.

Morgado, R.E.; Arnone, G.; Cappiello, C.C.; Gardner, S.D.; Hollas, C.L.; Ussery, L.E.; White, J.M.; Zahrt, J.D. [Los Alamos National Lab., NM (United States); Krauss, R.A. [Federal Aviation Administration, Atlantic City International Airport, NJ (United States)

1994-06-01T23:59:59.000Z

475

Senior Design This competition challenges competitors to design a solution and build a prototype to address  

E-Print Network [OSTI]

Senior Design This competition challenges competitors to design a solution and build a prototype to address a technical problem. Team Composition The Senior Design team will be comprised of a maximum of four competitors. At least half of the design team must be representing an accredited engineering

Saskatchewan, University of

476

EVITA: A Prototype System for Efficient Visualization and Interrogation of Terascale Datasets  

E-Print Network [OSTI]

EVITA: A Prototype System for Efficient Visualization and Interrogation of Terascale Datasets Raghu and visualization techniques has not kept pace with the growth in size and complexity of such datasets. To address datasets. The cornerstone of the EVITA system is a representational scheme that allows ranked access

Fowler, James E.

477

Seismic modeling and analysis of a prototype heated nuclear waste storage tunnel, Yucca Mountain, Nevada  

E-Print Network [OSTI]

was heated to replicate the effects of long-term storage of decaying nuclear waste and to study the effects for the long- term storage of high-level nuclear waste from reactors and decom- missioned atomic weaponsSeismic modeling and analysis of a prototype heated nuclear waste storage tunnel, Yucca Mountain

Snieder, Roel

478

Function Test Framework for Testing IO-Blocks in a Model-Based Rapid Prototyping Development  

E-Print Network [OSTI]

still lie in the responsibility of testing engineers. The paper is structured as follows. In section 2 Environment for Embedded Control Applications Stefan Pitzek1 and Peter Puschner1 1Institut f¨ur Technische of a model-based rapid-prototyping development environment for distributed embedded control applications

479

FRPS: A Fuzzy Rough Prototype Selection method Nele Verbiest a,n  

E-Print Network [OSTI]

: Classification Fuzzy rough sets Instance selection k NN Prototype Selection a b s t r a c t The k Nearest with a reduced but reinforced dataset to pick its neighbours from. We use fuzzy rough set theory to express are instance selection methods specifically designed to improve k NN classification. Rough set theory [6

Gent, Universiteit

480

Rapid prototyping of three-dimensional microstructures from multiwalled carbon nanotubes  

E-Print Network [OSTI]

Rapid prototyping of three-dimensional microstructures from multiwalled carbon nanotubes Wei Hsuan-dimensional carbon nanotube structures, whereby a focused laser beam is used to selectively burn local regions of a dense forest of multiwalled carbon nanotubes. Raman spectroscopy and scanning electron microscopy

Cronin, Steve

Note: This page contains sample records for the topic "liquid argon prototype" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


481

Prototype Programmatic Agreement Between DOE, State Energy Offices, and State Historic Preservation Offices  

Broader source: Energy.gov [DOE]

Prototype programmatic agreement between the U.S. Department of Energy, state energy offices and state historic preservation offices regarding the DOE Office of Energy Efficiency and Renewable Energy (EERE) State Energy Program (SEP), Weatherization Assistance Program, and Energy Efficiency and Conservation Block Grant Program regarding the responsibility to address historic preservation requirements.

482

Intranet Mediators: A Prototype M. Saelee, S. Beitzel, E. Jensen, D. Grossman, O. Frieder  

E-Print Network [OSTI]

Intranet Mediators: A Prototype M. Saelee, S. Beitzel, E. Jensen, D. Grossman, O. Frieder Information Retrieval Laboratory Department of Computer Science Illinois Institute of Technology lee an internet. Our intranet mediator allows data reconciliation and integration to be completed long before

483

Simulation of U-5 prototype undulator effects on the beam dynamics  

SciTech Connect (OSTI)

The APS prototype undulator U-5 has been installed at NSLS VUV ring. Its effects on the beam behaviour have been simulated with tracking codes TEAPOT and RACETRACK. The tune shift, the distortion of betatron function, the chromaticity, the transverse coupling, and some of the amplitude-dependent effects on the VUV ring have been compared and are presented in this paper.

Qian, Y.L.; Turner, L.R.

1992-04-06T23:59:59.000Z

484

Pressure-Compensated Hydrogen Fuel Cell WiSys Prototype Development Fund  

E-Print Network [OSTI]

Pressure-Compensated Hydrogen Fuel Cell WiSys Prototype Development Fund Final Report Principal Description The purpose of this project was to reduce-to-practice the pressure-compensated hydrogen fuel cell was intended to provide a solution for making more reliable and efficient hydrogen fuel cells than the present

Wu, Mingshen

485

Prototype MIMO temps reel pour l'UMTS Taofik Saidi Olivier Sentieys Sebastien Roy  

E-Print Network [OSTI]

Prototype MIMO temps r´eel pour l'UMTS Taofik Sa¨idi Olivier Sentieys S´ebastien Roy IRISA1 1´eatoires et de Traitement du Signal saidi@gel.ulaval.ca 6 rue de K´erampont Qu´ebec (Qu´ebec) 22300 Lannion

Paris-Sud XI, Université de

486

Modeling and simulation of electric propulsion concepts for a multimodal prototype demonstrator  

Science Journals Connector (OSTI)

The Office of Naval Research (ONR) is planning a prototype demonstration of a novel craft envisioned to have three modes of operation: • Fuel-efficient, good sea keeping mode for open ocean transits • High-speed, shallow water mode • Amphibious ... Keywords: integrated power systems, microgrids, multimodal propulsion, naval electric power systems

J. Herbst; A. Gattozzi; J. Uglum; J. S. Chalfant; C. Chryssostomidis; J. Langston; M. Steurer; M. Andrus

2009-07-01T23:59:59.000Z

487

Method of measuring a liquid pool volume  

DOE Patents [OSTI]

A method of measuring a molten metal liquid pool volume and in particular molten titanium liquid pools, including the steps of (a) generating an ultrasonic wave at the surface of the molten metal liquid pool, (b) shining a light on the surface of a molten metal liquid pool, (c) detecting a change in the frequency of light, (d) detecting an ultrasonic wave echo at the surface of the molten metal liquid pool, and (e) computing the volume of the molten metal liquid.

Garcia, Gabe V. (Las Cruces, NM); Carlson, Nancy M. (Idaho Falls, ID); Donaldson, Alan D. (Idaho Falls, ID)

1991-01-01T23:59:59.000Z

488

Supervision and control prototyping for an engine exhaust gas heat recovery system based on a steam Rankine cycle  

E-Print Network [OSTI]

Supervision and control prototyping for an engine exhaust gas heat recovery system based on a steam Rankine steam process for exhaust gas heat recovery from a spark-ignition (SI) engine, from a prototyping of a practical supervi- sion and control system for a pilot Rankine steam process for exhaust gas heat recovery

Paris-Sud XI, Université de

489

Liquid Hydrogen Delivery - Strategic Directions for Hydrogen...  

Broader source: Energy.gov (indexed) [DOE]

Liquid Hydrogen Delivery - Strategic Directions for Hydrogen Delivery Workshop Liquid Hydrogen Delivery - Strategic Directions for Hydrogen Delivery Workshop Targets, barriers and...

490

Reference site selection report for the advanced liquid metal reactor at the Idaho National Engineering Laboratory  

SciTech Connect (OSTI)

This Reference Site Selection Report was prepared by EG G, Idaho Inc., for General Electric (GE) to provide information for use by the Department of Energy (DOE) in selecting a Safety Test Site for an Advanced Liquid Metal Reactor. Similar Evaluation studies are planned to be conducted at other potential DOE sites. The Power Reactor Innovative Small Module (PRISM) Concept was developed for ALMR by GE. A ALMR Safety Test is planned to be performed on a DOE site to demonstrate features and meet Nuclear Regulatory Commission Requirements. This study considered possible locations at the Idaho National Engineering Laboratory that met the ALMR Prototype Site Selection Methodology and Criteria. Four sites were identified, after further evaluation one site was eliminated. Each of the remaining three sites satisfied the criteria and was graded. The results were relatively close. Thus concluding that the Idaho National Engineering Laboratory is a suitable location for an Advanced Liquid Metal Reactor Safety Test. 23 refs., 13 figs., 9 tabs.

Sivill, R.L.

1990-03-01T23:59:59.000Z

491

Laser Desorption/Ionization of Transition Metal Atoms and Oxides from Solid Argon Lester Andrews,*, Andreas Rohrbacher, Christopher M. Laperle, and Robert E. Continetti  

E-Print Network [OSTI]

, approximately 10% of the gas sample condensed on the 10K copper plate. For ablation a focused (10 cm f of the laser-ablated metal atoms and O2 in excess argon during condensation at 10 K, have been laser desorbed spectrometry. Adding the C6H5Br chromophore to the Ar/O2 gas mixture also enhanced the metal and oxide ion

Continetti, Robert E.

492

Frostbite Theater - Liquid Nitrogen Experiments - Instant Liquid Nitrogen  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Freezing Balloons! Freezing Balloons! Previous Video (Freezing Balloons!) Frostbite Theater Main Index Next Video (Shattering Flowers!) Shattering Flowers! Instant Liquid Nitrogen Balloon Party! Need a bunch of balloons blown-up quickly? Liquid nitrogen to the rescue! [ Show Transcript ] Announcer: Frostbite Theater presents... Cold Cuts! No baloney! Joanna and Steve: Just science! Joanna: Hi! I'm Joanna! Steve: And I'm Steve! Joanna: We've been making videos for a while now and we've learned that people like balloons and liquid nitrogen! Steve: So... Here you go! Balloon: Crackling... Balloon: Pop! Joanna: Ooh! Balloon: Pop! Balloon: Pop! Steve: If you'd like to know the science of what's going on behind this, please one of our first videos, "Liquid Nitrogen Experiments: The Balloon."

493

Haze Formation and Behavior in Liquid-Liquid Extraction Processes  

SciTech Connect (OSTI)

Aqueous haze formation and behavior was studied in the liquid-liquid system tri-n-butyl phosphate in odorless kerosene and 3M nitric acid with uranyl nitrate and cesium nitrate representing the major solute and an impurity, respectively. A pulsed column, mixer-settler and centrifugal contactor were chosen to investigate the effect of different turbulence characteristics on the manifestation of haze since these contactors exhibit distinct mixing phenomena. The dispersive processes of drop coalescence and breakage, and water precipitation in the organic phase were observed to lead to the formation of haze drops of {approx}1 um in diameter. The interaction between the haze and primary drops of the dispersion was critical to the separation efficiency of the liquid-liquid extraction equipment. Conditions of high power input and spatially homogeneous mixing enabled the haze drops to become rapidly assimilated within the dispersion to maximize the scrub performance and separation efficiency of the equipment.

Arm, Stuart T.; Jenkins, J. A.

2006-07-31T23:59:59.000Z

494

Effects of the shielding cylinder and substrate on the characteristics of an argon radio-frequency atmospheric glow discharge plasma jet  

SciTech Connect (OSTI)

With unique features of low breakdown voltages, large and uniform discharge areas and high concentrations of chemically reactive species, radio-frequency, atmospheric-pressure glow discharge (rf APGD) plasma sources produced with bare-metallic electrodes have shown promising prospects in the field of materials processing. In this paper, the spatial distributions (i.e., the directly measured integrated axial distribution and the radial distribution by using the inverse Abel transform) of the emission intensities of the Ar I 696.5 nm line are studied for the argon rf APGD plasma jet under different operation conditions, including variations of the rf power input or the argon flow rate, the existence of the solid shielding cylinder or the substrate. The experimental results show that, with other parameters being unchanged, the emission intensities of the Ar I 696.5 nm line increase with increasing the rf power input or the argon flow rate; and the solid shielding cylinder has more significant influences on the characteristics of the plasma impinging jet by reducing the mass flow rate of the ambient air entrained into the plasma jet region than those for the cases without the existence of the substrate at the downstream of the plasma torch nozzle exit.

Li Guo; Le Peisi; Li Heping; Bao Chengyu [Department of Engineering Physics, Tsinghua University, Beijing 100084 (China)

2010-05-15T23:59:59.000Z

495

Radial excitation temperatures and electron number densities in a 9, 27 and 50 \\{MHz\\} inductively-coupled argon plasma  

Science Journals Connector (OSTI)

This work is the result of experiments performed on a 9, 27 and 50 \\{MHz\\} atmospheric pressure argon ICP uing the same thermometric species and instrumentation. Radiation originating from plasma volume with 0.25 mm2 projected areas were measured. The lateral observed spatially integrated radiances were transformed to radial functions by using Abel integral equations. Variations of radiances from Ca atom and ion transitions as function of observation height were studied. Two ion transitions of Ca with sufficient excitation energy difference were chosen for two-line temperature determinations, while substitution of atom to ion radiance ratios into the Saha equation were used in calculating values for the electron number density. The cooling effect of the central penetrating nebulizer gas on the plasma centres was clearly observed through a decrease in the excitation temperatures at the lowest observation heights above the r.f. coils. Experimental evidence indicates a general decrease in excitation temperature with increasing generator frequency. The same tendency was observed for the electron number density. These phenomena are probably due to the variation in skin depth at the different frequencies.

W.H. Gunter; K. Visser; P.B. Zeeman

1983-01-01T23:59:59.000Z

496

Development of the sputtering yields of ArF photoresist after the onset of argon ion bombardment  

SciTech Connect (OSTI)

Modification of an advanced ArF excimer lithographic photoresist by 400 eV Ar ion irradiation was observed in situ in real time using both infrared spectroscopy and a quartz microbalance sensor. The photoresist sputtering yields had a characteristic behavior; the sputtering yields were higher than unity at the beginning, until an ion dose of 2 Multiplication-Sign 10{sup 16} ions cm{sup -2}. Thereafter, the yields decreased immediately to almost zero and remained constant with the yield at zero until a dose of approximately 4 Multiplication-Sign 10{sup 16} ions cm{sup -2} was reached. At larger doses, the yields increased again and reached a steady-state value of approximately 0.6. This development of the sputtering yield after the onset of ion bombardment is explained by an ion-induced modification of the photoresist that includes preferential sputtering of individual groups, argon ion implantation and the generation of voids. All these effects must be taken into account to assess line-edge-roughness on a photoresist subjected to highly energetic ion irradiation.

Takeuchi, Takuya; Ishikawa, Kenji; Kondo, Hiroki; Takeda, Keigo; Sekine, Makoto; Hori, Masaru [Graduate School of Engineering, Nagoya University, Nagoya 464-8603 (Japan); Corbella, Carles; Grosse-Kreul, Simon; Keudell, Achim von [Research Group Reactive Plasmas, Ruhr-Universitaet at Bochum, Bochum 44780 (Germany)

2013-01-07T23:59:59.000Z

497

Molecular Simulation of Henry's Constant at Vapor-Liquid and Liquid-Liquid Phase Richard J. Sadus  

E-Print Network [OSTI]

coexistence. 1. Introduction Henry's constant is a well-known measure of a solute's solubility in a particularMolecular Simulation of Henry's Constant at Vapor-Liquid and Liquid-Liquid Phase Boundaries Richard to determine Henry's constant from the residual chemical potential at infinite dilution at the vapor-liquid

498

Liquid Salt Heat Exchanger Technology for VHTR Based Applications  

SciTech Connect (OSTI)

The objective of this research is to evaluate performance of liquid salt fluids for use as a heat carrier for transferring high-temperature process heat from the very high-temperature reactor (VHTR) to chemical process plants. Currently, helium is being considered as the heat transfer fluid; however, the tube size requirements and the power associated with pumping helium may not be economical. Recent work on liquid salts has shown tremendous potential to transport high-temperature heat efficiently at low pressures over long distances. This project has two broad objectives: To investigate the compatibility of Incoloy 617 and coated and uncoated SiC ceramic composite with MgCl2-KCl molten salt to determine component lifetimes and aid in the design of heat exchangers and piping; and, To conduct the necessary research on the development of metallic and ceramic heat exchangers, which are needed for both the helium-to-salt side and salt-to-process side, with the goal of making these heat exchangers technologically viable. The research will consist of three separate tasks. The first task deals with material compatibility issues with liquid salt and the development of techniques for on-line measurement of corrosion products, which can be used to measure material loss in heat exchangers. Researchers will examine static corrosion of candidate materials in specific high-temperature heat transfer salt systems and develop an in situ electrochemical probe to measure metallic species concentrations dissolved in the liquid salt. The second task deals with the design of both the intermediate and process side heat exchanger systems. Researchers will optimize heat exchanger design and study issues related to corrosion, fabrication, and thermal stresses using commercial and in-house codes. The third task focuses integral testing of flowing liquid salts in a heat transfer/materials loop to determine potential issues of using the salts and to capture realistic behavior of the salts in a small scale prototype system. This includes investigations of plugging issues, heat transfer, pressure drop, and the corrosion and erosion of materials in the flowing system.

Mark Anderson; Kumar Sridhara; Todd Allen; Per Peterson

2012-10-11T23:59:59.000Z

499

The Viscosity of Liquid Helium  

Science Journals Connector (OSTI)

2 September 1935 research-article The Viscosity of Liquid Helium J. O. Wilhelm A. D. Misener A. R. Clark The Royal Society is collaborating with JSTOR to digitize, preserve...

1935-01-01T23:59:59.000Z

500

Liquid Oxygen and its Uses  

Science Journals Connector (OSTI)

... of the liquid. At present, however, there is no known method of rendering them flameless, and their use in the majority of coal-mines is therefore inadmissible. If this ...

HENRY BRIGGS

1924-02-02T23:59:59.000Z