National Library of Energy BETA

Sample records for intensity hid high-intensity

  1. High intensity femtosecond enhancement cavities

    E-Print Network [OSTI]

    Abram, Gilberto

    2009-01-01

    To produce extreme ultraviolet radiation via high harmonic generation (HHG) in rare gases, light intensities in excess of 1014 W/cm 2 are required. Usually such high intensity are obtained by parametric amplification of ...

  2. High Intensity Polarized Electron Gun

    SciTech Connect (OSTI)

    Redwine, Robert P.

    2012-07-31

    The goal of the project was to investigate the possibility of building a very high intensity polarized electron gun for the Electron-Ion Collider. This development is crucial for the eRHIC project. The gun implements a large area cathode, ring-shaped laser beam and active cathode cooling. A polarized electron gun chamber with a large area cathode and active cathode cooling has been built and tested. A preparation chamber for cathode activation has been built and initial tests have been performed. Major parts for a load-lock chamber, where cathodes are loaded into the vacuum system, have been manufactured.

  3. Delivering High IntensityDelivering High Intensity Proton Beam:Proton Beam

    E-Print Network [OSTI]

    McDonald, Kirk

    11 Delivering High IntensityDelivering High Intensity Proton Beam:Proton Beam: Lessons for the NextFACT08NuFACT08 ­­ 4 July4 July S. ChildressS. Childress ­­ Proton BeamsProton Beams 22 Presentation OutlinePresentation Outline Key Proton Beam ConsiderationsKey Proton Beam Considerations The First

  4. Radiation Dose Measurement for High-Intensity Laser Interactions...

    Office of Scientific and Technical Information (OSTI)

    Radiation Dose Measurement for High-Intensity Laser Interactions with Solid Targets at SLAC Citation Details In-Document Search Title: Radiation Dose Measurement for High-Intensity...

  5. COLLIMATION OPTIMIZATION IN HIGH INTENSITY RINGS.

    SciTech Connect (OSTI)

    CATALAN-LASHERAS,N.

    2001-06-18

    In high intensity proton rings, collimation is needed in order to maintain reasonable levels of residual activation and allow hands-on maintenance. Small acceptance to emittance ratio and restrained longitudinal space become important restrictions when dealing with low energy rings. The constraints and specifications when designing a collimation system for this type of machine will be reviewed. The SNS accumulator ring will serve as an examples long which we will illustrate the optimization path. Experimental studies of collimation with 1.3 GeV proton beams are currently under way in the U-70 machine in Protvino. The first results will be presented.

  6. Quantum Vacuum Experiments Using High Intensity Lasers

    E-Print Network [OSTI]

    Mattias Marklund; Joakim Lundin

    2009-04-02

    The quantum vacuum constitutes a fascinating medium of study, in particular since near-future laser facilities will be able to probe the nonlinear nature of this vacuum. There has been a large number of proposed tests of the low-energy, high intensity regime of quantum electrodynamics (QED) where the nonlinear aspects of the electromagnetic vacuum comes into play, and we will here give a short description of some of these. Such studies can shed light, not only on the validity of QED, but also on certain aspects of nonperturbative effects, and thus also give insights for quantum field theories in general.

  7. High intensity discharge device containing oxytrihalides

    DOE Patents [OSTI]

    Lapatovich, W.P.; Keeffe, W.M.; Liebermann, R.W.; Maya, J.

    1987-06-09

    A fill composition for a high intensity discharge device including mercury, niobium oxytrihalide, and a molecular stabilization agent is provided. The molar ratio of niobium oxytrihalide to the molecular stabilization agent in the fill is in the range of from about 5:1 to about 7.5:1. Niobium oxytrihalide is present in the fill in sufficient amount to produce, by dissociation in the discharge, atomic niobium, niobium oxide, NbO, and niobium dioxide, NbO[sub 2], with the molar ratio of niobium-containing vapor species to mercury in the fill being in the range of from about 0.01:1 to about 0.50:1; and mercury pressure of about 1 to about 50 atmospheres at lamp operating temperature. There is also provided a high intensity discharge device comprising a sealed light-transmissive arc tube; the arc tube including the above-described fill; and an energizing means for producing an electric discharge within the arc tube. 7 figs.

  8. Response of High-Tc Superconductor Metamaterials to High Intensity...

    Office of Scientific and Technical Information (OSTI)

    Conference: Response of High-Tc Superconductor Metamaterials to High Intensity THz Radiation Citation Details In-Document Search Title: Response of High-Tc Superconductor...

  9. The Fermilab Main Injector: high intensity operation and beam...

    Office of Scientific and Technical Information (OSTI)

    The Fermilab Main Injector: high intensity operation and beam loss control Authors: Brown, Bruce C. ; Adamson, Philip ; Capista, David ; Chou, Weiren ; Kourbanis, Ioanis ;...

  10. The investigation of high intensity laser driven micro neutron sources

    E-Print Network [OSTI]

    Ghoniem, Nasr M.

    , access to high temperature states of mat- ter capable of thermonuclear fusion and/or the effi- cientThe investigation of high intensity laser driven micro neutron sources for fusion materials. The application of fast pulse, high intensity lasers to drive low cost DT point neutron sources for fusion

  11. High Intensity Muon Beams in Osaka -MuSIC

    E-Print Network [OSTI]

    McDonald, Kirk

    High Intensity Muon Beams in Osaka - MuSIC Yoshitaka Kuno Osaka Unviersity, Osaka, Japan ! THB2014 Muon Transport COMET MuSIC facility at Osaka University MuSIC stage-I for SR PRISM demonstration at MuSIC Phase Rotation at FFAG Summary #12;Muon Beam Sources #12;ISIS EM, RIKEN-RAL J-PARC, MUSE

  12. Drift tube suspension for high intensity linear accelerators

    DOE Patents [OSTI]

    Liska, D.J.; Schamaun, R.G.; Clark, D.C.; Potter, R.C.; Frank, J.A.

    1980-03-11

    The disclosure relates to a drift tube suspension for high intensity linear accelerators. The system comprises a series of box-sections girders independently adjustably mounted on a linear accelerator. A plurality of drift tube holding stems are individually adjustably mounted on each girder.

  13. A SPICE Compatible Model of High Intensity Discharge Lamps

    E-Print Network [OSTI]

    from the arc's * Corresponding author behavior of HID lamps. This model are derived from the arc-linear resistance of the lamp, is the global specific conductance of the plasma, V is the volume of the plasma, L is the length of plasma and S is the cross section. ~ Vin G1 Lamp Model Ballast v(lamp) i(lamp) Analytical

  14. Overview of High Intensity Linac Programs in Europe

    E-Print Network [OSTI]

    Garoby, R

    2004-01-01

    Recent years have seen a boost in the support by the European Union (EU) of accelerator research in Europe. Provided they coordinate their efforts and define common goals and strategies, laboratories and institutions from the member states can receive a financial support reaching 50% of the total project cost. In the field of High Intensity Linacs, the EU has already supported the EURISOL initiative for nuclear physics, which this year is applying for funding of a Design Study, and the development of linacs for Waste Transmutation. More recently, an initiative for high-energy physics has been approved, which includes a programme for the development of pulsed linac technologies. The coordination and synergy imposed by the EU rules increase the benefit of the allocated resources. Combined with the ongoing internal projects in the partner laboratories, these European initiatives represent a strong effort focussed towards the development of linac technologies. This paper summarises the requests from the various E...

  15. Adaptive RF Transient Reduction for HIGH Intensity Beams with Gaps

    E-Print Network [OSTI]

    Tckmantel, Joachim

    2006-01-01

    When a high-intensity beam with bunch-trains and gaps passes a cavity with a high-gain vector feedback enforcing a constant voltage, large transients appear, stressing the RF high power hardware and increasing the trip rate. By modulating the cavity voltage with a varying periodic waveform (set-function), the RF power can be made constant while still preserving the high feedback gain. The average cavity voltage is conserved but bunches have to settle at slightly shifted positions. A method is derived to obtain this set-function in practice while making no assumptions or measurements of the beam or RF parameters. Adiabatic iterations are made including the whole machine as an analog computing device, using all parameters as they are. A computer simulation shows the success of the method.

  16. High intensity neutrino source superconducting solenoid cyrostat design

    SciTech Connect (OSTI)

    Page, T.M.; Nicol, T.H.; Feher, S.; Terechkine, I.; Tompkins, J.; /Fermilab

    2006-06-01

    Fermi National Accelerator Laboratory (FNAL) is involved in the development of a 100 MeV superconducting linac. This linac is part of the High Intensity Neutrino Source (HINS) R&D Program. The initial beam acceleration in the front end section of the linac is achieved using room temperature spoke cavities, each of which is combined with a superconducting focusing solenoid. These solenoid magnets are cooled with liquid helium at 4.5K, operate at 250 A and have a maximum magnetic field strength of 7.5 T. The solenoid cryostat will house the helium vessel, suspension system, thermal shield, multilayer insulation, power leads, instrumentation, a vacuum vessel and cryogenic distribution lines. This paper discusses the requirements and detailed design of these superconducting solenoid cryostats.

  17. High-intensity positron microprobe at Jefferson Lab

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Golge, Serkan; Vlahovic, Branislav; Wojtsekhowski, Bogdan B.

    2014-06-19

    We present a conceptual design for a novel continuous wave electron-linac based high-intensity slow-positron production source with a projected intensity on the order of 1010 e+/s. Reaching this intensity in our design relies on the transport of positrons (T+ below 600 keV) from the electron-positron pair production converter target to a low-radiation and low-temperature area for moderation in a high-efficiency cryogenic rare gas moderator, solid Ne. The performance of the integrated beamline has been verified through computational studies. The computational results include Monte Carlo calculations of the optimized electron/positron beam energies, converter target thickness, synchronized raster system, transport of themorebeam from the converter target to the moderator, extraction of the beam from the channel, and moderation efficiency calculations. For the extraction of positrons from the magnetic channel a magnetic field terminator plug prototype has been built and experimental data on the effectiveness of this prototype are presented. The dissipation of the heat away from the converter target and radiation protection measures are also discussed.less

  18. High-intensity positron microprobe at Jefferson Lab

    SciTech Connect (OSTI)

    Golge, Serkan; Vlahovic, Branislav; Wojtsekhowski, Bogdan B.

    2014-06-19

    We present a conceptual design for a novel continuous wave electron-linac based high-intensity slow-positron production source with a projected intensity on the order of 1010 e+/s. Reaching this intensity in our design relies on the transport of positrons (T+ below 600 keV) from the electron-positron pair production converter target to a low-radiation and low-temperature area for moderation in a high-efficiency cryogenic rare gas moderator, solid Ne. The performance of the integrated beamline has been verified through computational studies. The computational results include Monte Carlo calculations of the optimized electron/positron beam energies, converter target thickness, synchronized raster system, transport of the beam from the converter target to the moderator, extraction of the beam from the channel, and moderation efficiency calculations. For the extraction of positrons from the magnetic channel a magnetic field terminator plug prototype has been built and experimental data on the effectiveness of this prototype are presented. The dissipation of the heat away from the converter target and radiation protection measures are also discussed.

  19. High-intensity positron microprobe at Jefferson Lab

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Golge, Serkan [North Carolina Central Univ., Durham, NC (United States); Vlahovic, Branislav [North Carolina Central Univ., Durham, NC (United States); Wojtsekhowski, Bogdan B. [Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)

    2014-06-21

    We present a conceptual design for a novel continuous wave electron-linac based high-intensity slow-positron production source with a projected intensity on the order of 1010 e+/s. Reaching this intensity in our design relies on the transport of positrons (T+ below 600 keV) from the electron-positron pair production converter target to a low-radiation and low-temperature area for moderation in a high-efficiency cryogenic rare gas moderator, solid Ne. The performance of the integrated beamline has been verified through computational studies. The computational results include Monte Carlo calculations of the optimized electron/positron beam energies, converter target thickness, synchronized raster system, transport of the beam from the converter target to the moderator, extraction of the beam from the channel, and moderation efficiency calculations. For the extraction of positrons from the magnetic channel a magnetic field terminator plug prototype has been built and experimental data on the effectiveness of this prototype are presented. The dissipation of the heat away from the converter target and radiation protection measures are also discussed.

  20. HIGH INTENSITY DISCHARGE (HID) SOLID STATE BALLAST PROGRAM PHASE I FINAL REPORT

    E-Print Network [OSTI]

    Ailing, W.R.

    2013-01-01

    Support ---Gasketing Alzak Reflector Installation %" pipe thread in top insert for conduit mounting or for mounting with eye bolt (

  1. Glass Strengthening via High-Intensity Plasma-Arc Heating

    SciTech Connect (OSTI)

    Wereszczak, Andrew A; Harper, David C; Duty, Chad E; Patel, P

    2010-01-01

    The use of a high-intensity plasma-arc lamp was used to irradiate the surface of soda-lime silicate glass tiles to determine if an increase in strength could be achieved. The lamp had a power density of 3500 W/cm2, a processing area of 1 cm x 10 cm, irradiated near-infrared heating at a wavelength between 0.2 1.4 m, and was controlled to unidirectionally sweep across 50-mm-square tiles at a constant speed of 8 mm/s. Ring-on-ring (RoR) equibiaxial flexure and 4 pt uni-directional flexure testings of entire tiles were used to measure and compare failure stress distributions of treated and untreated glass. Even with non-optimized processing conditions, RoR failure stress increased by approximately 25% and the 4 pt bend failure stress increased by approximately 65%. Strengthening was due to a fire-polishing-like mechanism. The arc-lamp heat-treatment caused the location of the strength-limiting flaws in the 4-pt-bend tiles to change; namely, failure initiation occurred on the gage section surface for the treated glass whereas it occurred at a gage section edge for the untreated. Arc-lamp heat-treatment is attractive not only because it provides strengthening, but because it can (non-contact) process large amounts of glass quickly and inexpensively, and is a process that either a glass manufacturer or end-user can readily employ.

  2. ISSUANCE 2015-12-02: Energy Conservation Program: Energy Conservation Standards for High-Intensity Discharge Lamps, Final Determination

    Office of Energy Efficiency and Renewable Energy (EERE)

    Energy Conservation Program: Energy Conservation Standards for High-Intensity Discharge Lamps, Final Determination

  3. High intensity proton operation at the Brookhaven AGS accelerator complex

    SciTech Connect (OSTI)

    Ahrens, L.A.; Blaskiewicz, M.; Bleser, E.; Brennan, J.M.; Gardner, C.; Glenn, J.W.; Onillon, E.; Reece, R.K.; Roser, T.; Soukas, A.

    1994-08-01

    With the completion of the AGS rf upgrade, and the implementation of a transition {open_quotes}jump{close_quotes}, all of accelerator systems were in place in 1994 to allow acceleration of the proton intensity available from the AGS Booster injector to AGS extraction energy and delivery to the high energy users. Beam commissioning results with these new systems are presented. Progress in identifying and overcoming other obstacles to higher intensity are given. These include a careful exploration of the stopband strengths present on the AGS injection magnetic porch, and implementation of the AGS single bunch transverse dampers throughout the acceleration cycle.

  4. Fusion neutron yield from high intensity laser-cluster interaction

    SciTech Connect (OSTI)

    Davis, J.; Petrov, G.M.; Velikovich, A.L. [Naval Research Laboratory, Plasma Physics Division, 4555 Overlook Avenue SW, Washington, DC 20375 (United States)

    2006-06-15

    The fusion neutron yield from a compact neutron source is studied. Laser-irradiated deuterium clusters serve as a precursor of high-energy deuterium ions, which react with the walls of a fusion reaction chamber and produce copious amounts of neutrons in fusion reactions. The explosion of deuterium clusters with initial radius of 50-200 A irradiated by a subpicosecond laser with intensity of 10{sup 16} W/cm{sup 2} is examined theoretically. We studied the conversion efficiency of laser energy to ion kinetic energy, the mean and maximum ion kinetic energy, and ion energy distribution function by a molecular dynamics model. A yield of {approx}10{sup 5}-10{sup 6} neutrons/J is obtainable for a peak laser intensity of 10{sup 16}-10{sup 17} W/cm{sup 2} and clusters with an initial radius of 200-400 A.

  5. Rider Energy Expenditure during High Intensity Horse Activity

    E-Print Network [OSTI]

    O'Reilly, Colleen L

    2015-04-29

    (DDR) to determine if playing DDR for 30 min a day could meet minimum exercise requirements. Experienced DDR players as well as inexperienced DDR players were observed to determine if they could meet energy expenditure requirements. This study..., in contradiction with the Nintendo Wii study found that experienced DDR players exhibited exercise of a moderate intensity with mean HR of 161.2 beats per min (bpm) and mean VO2 of 25.2mLkg -1min-1 and expended more than 150 kcal in the 30 min exercise which...

  6. Laser enhanced high-intensity focused ultrasound thrombolysis: An in vitro study

    E-Print Network [OSTI]

    Cui, Huizhong; Yang, Xinmai

    2013-01-17

    Laser-enhanced thrombolysis by high intensity focused ultrasound (HIFU) treatment was studied in vitro with bovine blood clots. To achieve laser-enhanced thrombolysis, laser light was employed to illuminate the sample concurrently with HIFU...

  7. Can we detect "Unruh radiation" in the high intensity lasers?

    E-Print Network [OSTI]

    Satoshi Iso; Yasuhiro Yamamoto; Sen Zhang

    2011-02-23

    An accelerated particle sees the Minkowski vacuum as thermally excited, which is called the Unruh effect. Due to an interaction with the thermal bath, the particle moves stochastically like the Brownian motion in a heat bath. It has been discussed that the accelerated charged particle may emit extra radiation (the Unruh radiation) besides the Larmor radiation, and experiments are under planning to detect such radiation by using ultrahigh intensity lasers. There are, however, counterarguments that the radiation is canceled by an interference effect between the vacuum fluctuation and the radiation from the fluctuating motion. In this reports, we review our recent analysis on the issue of the Unruh radiation. In this report, we particularly consider the thermalization of an accelerated particle in the scalar QED, and derive the relaxation time of the thermalization.

  8. Lifetime Analysis at High Intensity Colliders Applied to the LHC

    E-Print Network [OSTI]

    Salvachua, B; Bruce, R; Burkart, F; Redaelli, S; Valentino, G; Wollmann, D

    2013-01-01

    The beam lifetime is one of the main parameters to define the performance of a collider. In a super-conducting machine like the LHC, the lifetime determines the intensity reach for a given collimation cleaning. The beam lifetime can be calculated from the direct measurement of beam current. However, due to the noise in the beam current signal only an average lifetime over several seconds can be calculated. We propose here an alternative method, which uses the signal of the beam loss monitors in the vicinity of the primary collimators to get the instantaneous beam lifetime at the collimators. In this paper we compare the lifetime from the two methods and investigate the minimum lifetime over the LHC cycle for all the physics fills in 2011 and 2012. These data provide a reference for estimates of performance reach from collimator cleaning.

  9. Ultra-High Intensity Magnetic Field Generation in Dense Plasma

    SciTech Connect (OSTI)

    Fisch, Nathaniel J

    2014-01-08

    I. Grant Objective The main objective of this grant proposal was to explore the efficient generation of intense currents. Whereasthefficient generation of electric current in low-?energy-? density plasma has occupied the attention of the magnetic fusion community for several decades, scant attention has been paid to carrying over to high-?energy-? density plasma the ideas for steady-?state current drive developed for low-?energy-? density plasma, or, for that matter, to inventing new methodologies for generating electric current in high-?energy-?density plasma. What we proposed to do was to identify new mechanisms to accomplish current generation, and to assess the operation, physics, and engineering basis of new forms of current drive in regimes appropriate for new fusion concepts.

  10. Generation of Stable (3+1)-dimensional High-intensity Ultrashort Light Pulses

    SciTech Connect (OSTI)

    Todorov, T. P.; Koprinkov, I. G. [Department of Applied Physics, Technical University of Sofia, 1000 Sofia (Bulgaria); Todorova, M. E. [College of Energetics and Electronics, Technical University of Sofia, 1000 Sofia (Bulgaria); Todorov, M. D. [Faculty of Appl. Math. and Informatics, Technical University of Sofia, 1000 Sofia (Bulgaria)

    2010-11-25

    The spatiotemporal dynamics of high-intensity femtosecond laser pulses is studied within a rigorous physical model. The pulse propagation is described by the nonlinear envelope equation. The propagation and the material equations are solved self-consistently at realistic physical conditions. Self-compression of the pulse around single-cycle regime and dramatic increase of the pulse intensity is found. At certain conditions, the peak intensity, transversal width, time duration, and the spatiotemporal pulse shape remain stable with the propagation of the pulse, resembling a soliton formation process. This, to our knowledge, is the first simulation of high-intensity ultrashort soliton formation dynamics in the (3+1)-dimensional case.

  11. Improved Heat Transfer and Performance of High Intensity Combustion Systems for Reformer Furnace Applications

    E-Print Network [OSTI]

    Williams, F. D. M.; Kondratas, H. M.

    1983-01-01

    Developments over the past fifteen years have evolved new short flame, high intensity (1,000,000 BTU/HR/ft3 ) combustion systems for industrial uses. Such systems produce a more uniform and higher heat flux than conventional low intensity systems...

  12. Investigation of long-period fiber gratings induced by high-intensity femtosecond UV laser pulses

    E-Print Network [OSTI]

    Nikogosyan, David N.

    efficiency with that for other existing meth- ods of recording. We studied the temperature sensing properties changes in the fiber core induced by thermal heating, were developed. They include the use of a CO2 laserInvestigation of long-period fiber gratings induced by high-intensity femtosecond UV laser pulses

  13. Target Material Irradiation Studies for High-Intensity Accelerator Beams , H. Ludewig1

    E-Print Network [OSTI]

    McDonald, Kirk

    Target Material Irradiation Studies for High-Intensity Accelerator Beams N. Simos1* , H. Kirk1 , H on the behavior of special materials and composites under irradiation conditions and their potential use irradiated target material. The ever greater deposited energy and induced thermo-mechanical loads combined

  14. Numerical simulations of stripping effects in high-intensity hydrogen ion linacs

    SciTech Connect (OSTI)

    Carneiro, J.-P.; Mustapha, B.; Ostroumov, P.N.; /Argonne

    2008-12-01

    Numerical simulations of H{sup -} stripping losses from blackbody radiation, electromagnetic fields, and residual gas have been implemented into the beam dynamics code TRACK. Estimates of the stripping losses along two high-intensity H{sup -} linacs are presented: the Spallation Neutron Source linac currently being operated at Oak Ridge National Laboratory and an 8 GeV superconducting linac currently being designed at Fermi National Accelerator Laboratory.

  15. Spatiotemporal study of the local thermodynamic equilibrium deviations in high-intensity discharge lamps

    SciTech Connect (OSTI)

    Helali, H.; Bchir, T.; Araoud, Z.; Charrada, K.

    2013-04-15

    The aim of this work is to study the local thermodynamic equilibrium (LTE) deviations in arc discharges plasma generated in high-intensity discharge lamps operating under an ac (50 Hz) power supply. To achieve this goal, we elaborate a two-temperature, two-dimensional, and time-depending model. We have found numerical results almost reproducing the experimental data, which allows us to validate this model. After validation, we have discussed different energy term effects on the LTE deviations.

  16. Electric characteristics of germanium Vertical Multijunction (VMJ) photovoltaic cells under high intensity illumination

    SciTech Connect (OSTI)

    Unishkov, V.A.

    1997-03-01

    This paper presents the results of the performance evaluation of Vertical Multijunction (VMJ) germanium (Ge) photovoltaic (PV) cells. Vertical Multijunction Germanium Photovoltaic cells offer several advantages for Thermophotovoltaic (TPV) applications such as high intensity light conversion, low series resistance, more efficient coupling to lower temperature sources, high output voltage, simplified heat rejection system as well as potentially simple fabrication technology and low cost photovoltaic converter device. {copyright} {ital 1997 American Institute of Physics.}

  17. Report of the Snowmass M6 Working Group on high intensity proton sources

    SciTech Connect (OSTI)

    Weiren Chou and J. Wei

    2002-08-20

    The U.S. high-energy physics program needs an intense proton source, a 1-4 MW Proton Driver (PD), by the end of this decade. This machine will serve as a stand-alone facility that will provide neutrino superbeams and other high intensity secondary beams such as kaons, muons, neutrons, and anti-protons (cf. E1 and E5 group reports) and also serve as the first stage of a neutrino factory (cf. M1 group report). It can also be a high brightness source for a VLHC. Based on present accelerator technology and project construction experience, it is both feasible and cost-effective to construct a 1-4 MW Proton Driver. Two recent PD design studies have been made, one at FNAL and the other at the BNL. Both designed PD's for 1 MW proton beams at a cost of about U.S. $200M (excluding contingency and overhead) and both designs were upgradeable to 4 MW. An international collaboration between FNAL, BNL and KEK on high intensity proton facilities is addressing a number of key design issues. The superconducting (sc) RF cavities, cryogenics, and RF controls developed for the SNS can be directly adopted to save R&D efforts, cost, and schedule. PD studies are also actively being pursued at Europe and Japan.

  18. REPORT OF THE SNOWMASS M6 WORKING GROUP ON HIGH INTENSITY PROTON SOURCES.

    SciTech Connect (OSTI)

    CHOU,W.; WEI,J.

    2001-08-14

    The M6 working group had more than 40 active participants (listed in Section 4). During the three weeks at Snowmass, there were about 50 presentations, covering a wide range of topics associated with high intensity proton sources. The talks are listed in Section 5. This group also had joint sessions with a number of other working groups, including E1 (Neutrino Factories and Muon Colliders), E5 (Fixed-Target Experiments), M1 (Muon Based Systems), T4 (Particle Sources), T5 (Beam dynamics), T7 (High Performance Computing) and T9 (Diagnostics). The M6 group performed a survey of the beam parameters of existing and proposed high intensity proton sources, in particular, of the proton drivers. The results are listed in Table 1. These parameters are compared with the requirements of high-energy physics users of secondary beams in Working Groups E1 and E5. According to the consensus reached in the E1 and E5 groups, the U.S. HEP program requires an intense proton source, a 1-4 MW Proton Driver, by the end of this decade.

  19. High-intensity laser-driven proton acceleration enhancement from hydrogen containing ultrathin targets

    SciTech Connect (OSTI)

    Dollar, F.; Reed, S. A.; Matsuoka, T.; Bulanov, S. S.; Chvykov, V.; Kalintchenko, G.; McGuffey, C.; Rousseau, P.; Thomas, A. G. R.; Willingale, L.; Yanovsky, V.; Krushelnick, K.; Maksimchuk, A.; Litzenberg, D. W.

    2013-09-30

    Laser driven proton acceleration experiments from micron and submicron thick targets using high intensity (2 10{sup 21} W/cm{sup 2}), high contrast (10{sup ?15}) laser pulses show an enhancement of maximum energy when hydrogen containing targets were used instead of non-hydrogen containing. In our experiments, using thin (<1?m) plastic foil targets resulted in maximum proton energies that were consistently 20%100% higher than when equivalent thickness inorganic targets, including Si{sub 3}N{sub 4} and Al, were used. Proton energies up to 20 MeV were measured with a flux of 10{sup 7} protons/MeV/sr.

  20. Early-time interface instabilities in high intensity aero-breakup of liquid drop

    E-Print Network [OSTI]

    Hu, X Y

    2014-01-01

    The early-time interface instabilities in high intensity (high Weber number and high Reynolds number) aero-breakup of a liquid drop are investigated by numerical simulations. A combined analysis based on simulation results and linear-instability theory show that both RT (Rayleigh-Taylor) and KH (Kelvin-Helmholtz) instabilities contributes the dominant disturbances originate from about the half way from the stagnation point to the equator. This is verified further with a specially modified simulation, which decreases the effect of KH instability while keeps other flow properties unchanged.

  1. Observations of the filamentation of high-intensity laser-produced electron beams

    SciTech Connect (OSTI)

    Wei, M.S.; Beg, F.N.; Dangor, A.E.; Gopal, A.; Tatarakis, M.; Krushelnick, K. [Blackett Laboratory, Imperial College London SW7 2BZ (United Kingdom); Clark, E.L.; Evans, R.G. [Blackett Laboratory, Imperial College London SW7 2BZ (United Kingdom); Plasma Physics Department, AWE plc, Aldermaston, Reading RG7 4PR (United Kingdom); Ledingham, K.W.D. [Department of Physics, University of Strathclyde, Glasgow G4 0NG (United Kingdom); Plasma Physics Department, AWE plc, Aldermaston, Reading RG7 4PR (United Kingdom); McKenna, P. [Department of Physics, University of Strathclyde, Glasgow G4 0NG (United Kingdom); Norreys, P.A. [Central Laser Facility, Rutherford Appleton Laboratory, Chilton, Oxon OX11 OQX (United Kingdom); Zepf, M. [Department of Physics, The Queen's University, University Road, Belfast BT7 1NN (United Kingdom)

    2004-11-01

    Filamented electron beams have been observed to be emitted from the rear of thin solid targets irradiated by a high-intensity short-pulse laser when there is low-density plasma present at the back of the target. These observations are consistent with a laser-generated beam of relativistic electrons propagating through the target, which is subsequently fragmented by a Weibel-like instability in the low-density plasma at the rear. These measurements are in agreement with particle-in-cell simulations and theory, since the filamentation instability is predicted to be dramatically enhanced when the electron beam density approaches that of the background plasma.

  2. Backcoupling of acoustic streaming on the temperature field inside high-intensity discharge lamps

    E-Print Network [OSTI]

    Schwieger, Joerg; Wolff, Marcus; Manders, Freddy; Suijker, Jos

    2015-01-01

    Operating high-intensity discharge lamps in the high frequency range (20-300 kHz) provides energy-saving and cost reduction potentials. However, commercially available lamp drivers do not make use of this operating strategy because light intensity fluctuations and even lamp destruction are possible. The reason for the fluctuating discharge arc are acoustic resonances in this frequency range that are excited in the arc tube. The acoustic resonances in turn generate a fluid flow that is caused by the acoustic streaming effect. Here, we present a 3D multiphysics model to determine the influence of acoustic streaming on the temperature field in the vicinity of an acoustic eigenfrequency. In that case a transition from stable to instable behavior occurs. The model is able to predict when light flicker can be expected. The results are in very good accordance with accompanying experiments.

  3. MR-Guided High-Intensity Focused Ultrasound: Current Status of an Emerging Technology

    SciTech Connect (OSTI)

    Napoli, Alessandro, E-mail: napoli.alessandro@gmail.com; Anzidei, Michele, E-mail: michele.anzidei@gmail.com; Ciolina, Federica, E-mail: federica.ciolina@gmail.com; Marotta, Eugenio, E-mail: eugenio.marotta@gmail.com; Cavallo Marincola, Beatrice, E-mail: beatrice.cavalloamarincola@gmail.com; Brachetti, Giulia, E-mail: giuliabrachetti@gmail.com; Mare, Luisa Di, E-mail: luisadimare@gmail.com; Cartocci, Gaia, E-mail: gaia.cartocci@gmail.com; Boni, Fabrizio, E-mail: fabrizioboni00@gmail.com; Noce, Vincenzo, E-mail: vinc.noce@hotmail.it; Bertaccini, Luca, E-mail: lucaone84@libero.it; Catalano, Carlo, E-mail: carlo.catalano@uniroma1.it [Sapienza, University of Rome, Department of Radiological Sciences (Italy)] [Sapienza, University of Rome, Department of Radiological Sciences (Italy)

    2013-10-15

    The concept of ideal tumor surgery is to remove the neoplastic tissue without damaging adjacent normal structures. High-intensity focused ultrasound (HIFU) was developed in the 1940s as a viable thermal tissue ablation approach. In clinical practice, HIFU has been applied to treat a variety of solid benign and malignant lesions, including pancreas, liver, prostate, and breast carcinomas, soft tissue sarcomas, and uterine fibroids. More recently, magnetic resonance guidance has been applied for treatment monitoring during focused ultrasound procedures (magnetic resonance-guided focused ultrasound, MRgFUS). Intraoperative magnetic resonance imaging provides the best possible tumor extension and dynamic control of energy deposition using real-time magnetic resonance imaging thermometry. We introduce the fundamental principles and clinical indications of the MRgFUS technique; we also report different treatment options and personal outcomes.

  4. Left-Right Symmetric Models at the High-Intensity Frontier

    E-Print Network [OSTI]

    Castillo-Felisola, Oscar; Helo, Juan C; Kovalenko, Sergey G; Ortiz, Sebastian E

    2015-01-01

    We study constraints on Left-Right Symmetric models from searches of semileptonic decays of $D$, $D_{s}$, $B$ mesons, mediated by heavy neutrinos $N$ with masses $m_N\\sim $ GeV that go on their mass shell leading to a resonant enhancement of the rates. Using these processes we examine, as a function of $m_N$ and $M_{W_R}$, the physics reach of the recently proposed high-intensity beam dump experiment SHiP, which is expected to produce a large sample of $D_s$ mesons. We compare these results with the corresponding reach of neutrinoless double beta decay experiments, as well as like-sign dilepton searches with displaced vertices at the LHC. We conclude that the SHiP experiment has clear advantages in probing the Left-Right Symmetric models for heavy neutrinos in the GeV mass range.

  5. High-intensity, high-brightness polarized and unpolarized beam production in charge-exchange collisions

    SciTech Connect (OSTI)

    Zelenski, A.; Ritter, J.; Zubets, V.; Steski, D.; Atoian, G.; Davydenko, V.; Ivanov, A.; Kolmogorov, A.

    2011-03-28

    Basic limitations on the high-intensity H{sup -} ion beam production were experimentally studied in charge-exchange collisions of the neutral atomic hydrogen beam in the Na-vapour jet ionizer cell. These studies are the part of the polarized source upgrade (to 10 mA peak current and 85% polarization) project for RHIC. In the source the atomic hydrogen beam of a 5-10 keV energy and total (equivalent) current up to 5 A is produced by neutralization of proton beam in pulsed hydrogen gas target. Formation of the proton beam (from the surface of the plasma emitter with a low transverse ion temperature {approx}0.2 eV) is produced by four-electrode spherical multi-aperture ion-optical system with geometrical focusing. The hydrogen atomic beam intensity up to 1.0 A/cm{sup 2} (equivalent) was obtained in the Na-jet ionizer aperture of a 2.0 cm diameter. At the first stage of the experiment H-beam with 36 mA current, 5 keV energy and {approx}1.0 cm {center_dot} mrad normalized emittance was obtained using the flat grids and magnetic focusing.

  6. Simulation of the Beam Dump for a High Intensity Electron Gun

    E-Print Network [OSTI]

    Doebert, S; Lefevre, T; Pepitone, K

    2014-01-01

    The CLIC Drive Beam is a high-intensity pulsed electron beam. A test facility for the Drive Beam electron gun will soon be commissioned at CERN. In this contribution we outline the design of a beam dump / Faraday cup capable of resisting the beams thermal load. The test facility will operate initially up to 140 keV. At such low energies, the electrons are absorbed very close to the surface of the dump, leading to a large energy deposition density in this thin layer. In order not to damage the dump, the beam must be spread over a large surface. For this reason, a small-angled cone has been chosen. Simulations using Geant4 have been performed to estimate the distribution of energy deposition in the dump. The heat transport both within the electron pulse and between pulses has been modelled using finite element methods to check the resistance of the dump at high repetition rates. In addition, the possibility of using a moveable dump to measure the beam profile and emittance is discussed.

  7. Transcript of the workshop to discuss plans for a National High Intensity Radioactive Nuclear Beam Facility

    SciTech Connect (OSTI)

    Nitschke, J.M. (ed.)

    1989-10-19

    Following the First International Conference on Radioactive Nuclear Beams'' in Berkeley, a workshop was held on October 19, 1989 at the Lawrence Berkeley Laboratory to discuss plans for a National High Intensity Radioactive Nuclear Beam (RNB) Facility. The purpose of the workshop was -- after having discussed during the conference the physics question that can be addressed with RNBs -- to evaluate more concretely the possibilities for actually constructing such a facility in this country. It is becoming increasingly apparent that facility producing beams of radioactive nuclei with extreme neutron-to-proton ratios is of high scientific interest and technically feasible. It would allow the study of nuclear structure and astrophysical reactions very far from the line of stable nuclei, and could provide new possibilities of reaching the long-sought island of stability of superheavy nuclei. Such facilities are under advanced consideration in Japan and at CERN in Europe. This paper contains a slightly edited transcript of the tape recording that was made of the workshop.

  8. Characterization of the fast electrons distribution produced in a high intensity laser target interaction

    SciTech Connect (OSTI)

    Westover, B.; Lawrence Livermore National Laboratory, Livermore, California 94550 ; Chen, C. D.; Patel, P. K.; McLean, H.; Beg, F. N.

    2014-03-15

    Experiments on the Titan laser (?150?J, 0.7ps, 2נ10{sup 20}Wcm{sup ?2}) at the Lawrence Livermore National Laboratory were carried out in order to study the properties of fast electrons produced by high-intensity, short pulse laser interacting with matter under conditions relevant to Fast Ignition. Bremsstrahlung x-rays produced by these fast electrons were measured by a set of compact filter-stack based x-ray detectors placed at three angles with respect to the target. The measured bremsstrahlung signal allows a characterization of the fast electron beam spectrum, conversion efficiency of laser energy into fast electron kinetic energy and angular distribution. A Monte Carlo code Integrated Tiger Series was used to model the bremsstrahlung signal and infer a laser to fast electron conversion efficiency of 30%, an electron slope temperature of about 2.2?MeV, and a mean divergence angle of 39. Simulations were also performed with the hybrid transport code ZUMA which includes fields in the target. In this case, a conversion efficiency of laser energy to fast electron energy of 34% and a slope temperature between 1.5?MeV and 4?MeV depending on the angle between the target normal direction and the measuring spectrometer are found. The observed temperature of the bremsstrahlung spectrum, and therefore the inferred electron spectrum are found to be angle dependent.

  9. Production of high intensity {sup 48}Ca for the 88-Inch Cyclotron and other updates

    SciTech Connect (OSTI)

    Benitez, J. Y.; Hodgkinson, A.; Lyneis, C. M. Strohmeier, M.; Thullier, T.; Todd, D.; Xie, D.; Franzen, K. Y.

    2014-02-15

    Recently the Versatile ECR for NUclear Science (VENUS) ion source was engaged in a 60-day long campaign to deliver high intensity {sup 48}Ca{sup 11+} beam to the 88-Inch Cyclotron. As the first long term use of VENUS for multi-week heavy-element research, new methods were developed to maximize oven to target efficiency. First, the tuning parameters of VENUS for injection into the cyclotron proved to be very different than those used to tune VENUS for maximum beam output of the desired charge state immediately following its bending magnet. Second, helium with no oxygen support gas was used to maximize the efficiency. The performance of VENUS and its low temperature oven used to produce the stable requested 75 e?A of {sup 48}Ca{sup 11+} beam current was impressive. The consumption of {sup 48}Ca in VENUS using the low temperature oven was checked roughly weekly, and was found to be on average 0.27 mg/h with an ionization efficiency into the 11+ charge state of 5.0%. No degradation in performance was noted over time. In addition, with the successful operation of VENUS the 88-Inch cyclotron was able to extract a record 2 p?A of {sup 48}Ca{sup 11+}, with a VENUS output beam current of 219 e?A. The paper describes the characteristics of the VENUS tune used for maximum transport efficiency into the cyclotron as well as ongoing efforts to improve the transport efficiency from VENUS into the cyclotron. In addition, we briefly present details regarding the recent successful repair of the cryostat vacuum system.

  10. Received 9 May 2015 | Accepted 9 Sep 2015 | Published 9 Oct 2015 High-intensity power-resolved radiation

    E-Print Network [OSTI]

    MacDonald, Mark

    to image high-intensity fast-neutron and gamma-ray fields simultaneously. This system has been deployed. Monitoring systems, such as fission chambers and rhodium detector systems are expensive and have limited high temperatures, corrosion, extreme radiation levels and miniaturization. In-core monitoring systems

  11. Impact of a high-intensity fire on mixed evergreen and mixed conifer forests in the Peninsular

    E-Print Network [OSTI]

    Deutschman, Douglas

    Impact of a high-intensity fire on mixed evergreen and mixed conifer forests in the Peninsular have changed the forest fire regime across the western United States by excluding fire. Fire conifer forest, oak woodland, chaparral and grassland. Most conifers were killed by the fire, especially

  12. MERIT -The High Intensity Liquid Mercury Target Experiment at the CERN PS

    E-Print Network [OSTI]

    McDonald, Kirk

    placed long straight sections around the ring of the accelerator, thus creating intense neutrino beams-induced pressure waves and resulting pitting corrosion in the containment walls and cavitation formation. The use of a free flowing liquid in the form of a jet is a promising design option to address these issues

  13. Heavy and superheavy elements production in high intensive fluxes of explosive process

    E-Print Network [OSTI]

    Lutostansky, Yu S; Panov, I V

    2015-01-01

    Mathematical model of heavy and superheavy nuclei production in intensive pulsed neutron fluxes of explosive process is developed. The pulse character of the process allows dividing it in time into two stages: very short rapid process of multiple neutron captures with higher temperature and very intensive neutron fluxes, and relatively slower process with lower temperature and neutron fluxes. The model was also extended for calculation of the transuranium yields in nuclear explosions takes into account the adiabatic character of the process, the probabilities of delayed fission, and the emission of delayed neutrons. Also the binary starting target isotopes compositions were included. Calculations of heavy transuranium and transfermium nuclei production were made for Mike, Par and Barbel experiments, performed in USA. It is shown that the production of transfermium neutron-rich nuclei and superheavy elements with A ~ 295 is only possible in case of binary mixture of starting isotopes with the significant addit...

  14. Calculation of synchrotron radiation from high intensity electron beam at eRHIC

    SciTech Connect (OSTI)

    Jing Y.; Chubar, O.; Litvinenko, V.

    2012-05-20

    The Electron-Relativistic Heavy Ion Collider (eRHIC) at Brookhaven National Lab is an upgrade project for the existing RHIC. A 30 GeV energy recovery linac (ERL) will provide a high charge and high quality electron beam to collide with proton and ion beams. This will improve the luminosity by at least 2 orders of magnitude. The synchrotron radiation (SR) from the bending magnets and strong quadrupoles for such an intense beam could be penetrating the vacuum chamber and producing hazards to electronic devices and undesired background for detectors. In this paper, we calculate the SR spectral intensity, power density distributions and heat load on the chamber wall. We suggest the wall thickness required to stop the SR and estimate spectral characteristics of the residual and scattered background radiation outside the chamber.

  15. Propagation and absorption of high-intensity femtosecond laser radiation in diamond

    SciTech Connect (OSTI)

    Kononenko, V V; Konov, V I; Gololobov, V M; Zavedeev, E V [A M Prokhorov General Physics Institute, Russian Academy of Sciences, Moscow (Russian Federation)

    2014-12-31

    Femtosecond interferometry has been used to experimentally study the photoexcitation of the electron subsystem of diamond exposed to femtosecond laser pulses of intensity 10{sup 11} to 10{sup 14} W cm{sup -2}. The carrier concentration has been determined as a function of incident intensity for three harmonics of a Ti : sapphire laser (800, 400 and 266 nm). The results demonstrate that, in a wide range of laser fluences (up to those resulting in surface and bulk graphitisation), a well-defined multiphoton absorption prevails. We have estimated nonlinear absorption coefficients for pulsed radiation at ? = 800 nm (four-photon transition) and at 400 and 266 nm (indirect and direct two-photon transitions, respectively). It has also been shown that, at any considerable path length of a femtosecond pulse in diamond (tens of microns or longer), the laser beam experiences a severe nonlinear transformation, determining the amount of energy absorbed by the lattice, which is important for the development of technology for diamond photostructuring by ultrashort pulses. The competition between wave packet self-focusing and the plasma defocusing effect is examined as a major mechanism governing the propagation of intense laser pulses in diamond. (interaction of laser radiation with matter. laser plasma)

  16. Design of a High Intensity Neutron Source for Neutron-Induced Fission Yield Studies

    E-Print Network [OSTI]

    M. Lantz; D. Gorelov; A. Jokinen; V. S. Kolhinen; A. Mattera; H. Penttil; S. Pomp; V. Rakopoulos; S. Rinta-Antila; A. Solders

    2013-04-09

    The upgraded IGISOL facility with JYFLTRAP, at the accelerator laboratory of the University of Jyv\\"askyl\\"a, has been supplied with a new cyclotron which will provide protons of the order of 100 {\\mu}A with up to 30 MeV energy, or deuterons with half the energy and intensity. This makes it an ideal place for measurements of neutron-induced fission products from various actinides, in view of proposed future nuclear fuel cycles. The groups at Uppsala University and University of Jyv\\"askyl\\"a are working on the design of a neutron converter that will be used as neutron source in fission yield studies. The design is based on simulations with Monte Carlo codes and a benchmark measurement that was recently performed at The Svedberg Laboratory in Uppsala. In order to obtain a competitive count rate the fission targets will be placed very close to the neutron converter. The goal is to have a flexible design that will enable the use of neutron fields with different energy distributions. In the present paper, some considerations for the design of the neutron converter will be discussed, together with different scenarios for which fission targets and neutron energies to focus on.

  17. High-intensity double-pulse X-ray free-electron laser

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Marinelli, A.; Ratner, D.; Lutman, A. A.; Turner, J.; Welch, J.; Decker, F. J.; Loos, H.; Behrens, C.; Gilevich, S.; Miahnahri, A. A.; et al

    2015-03-06

    The X-ray free-electron laser has opened a new era for photon science, improving the X-ray brightness by ten orders of magnitude over previously available sources. Similar to an optical laser, the spectral and temporal structure of the radiation pulses can be tailored to the specific needs of many experiments by accurately manipulating the lasing medium, that is, the electron beam. Here we report the generation of mJ-level two-colour hard X-ray pulses of few femtoseconds duration with an XFEL driven by twin electron bunches at the Linac Coherent Light Source. This performance represents an improvement of over an order of magnitudemorein peak power over state-of-the-art two-colour XFELs. The unprecedented intensity and temporal coherence of this new two-colour X-ray free-electron laser enable an entirely new set of scientific applications, ranging from X-ray pump/X-ray probe experiments to the imaging of complex biological samples with multiple wavelength anomalous dispersion.less

  18. Surface composition, microstructure and corrosion resistance of AZ31 magnesium alloy irradiated by high-intensity pulsed ion beam

    SciTech Connect (OSTI)

    Li, P., E-mail: pli@sqnc.edu.cn [Department of Physics and Information Engineering, Shangqiu Normal University, Shangqiu 476000 (China); Surface Engineering Laboratory, School of Materials Science and Engineering, Dalian University of Technology, Dalian 116024 (China); Lei, M.K., E-mail: surfeng@dlut.edu.cn [Surface Engineering Laboratory, School of Materials Science and Engineering, Dalian University of Technology, Dalian 116024 (China); Zhu, X.P. [Surface Engineering Laboratory, School of Materials Science and Engineering, Dalian University of Technology, Dalian 116024 (China)

    2011-06-15

    High-intensity pulsed ion beam (HIPIB) irradiation of AZ31 magnesium alloy is performed and electrochemical corrosion experiment of irradiated samples is carried out by using potentiodynamic polarization technology in order to explore the effect of HIPIB irradiation on corrosion resistance of magnesium alloy. The surface composition, cross-sectional morphology and microstructure are characterized by using electron probe microanalyzer, optical microscope and transmission electron microscope, respectively. The results indicated that HIPIB irradiation leads to a significant improvement in corrosion resistance of magnesium alloy, in terms of the considerable increase in both corrosion potential and pitting breakdown potential. The microstructural refinement and surface purification induced by HIPIB irradiation are responsible for the improved corrosion resistance. - Research Highlights: {yields} A modified layer about 30 {mu}m thick is obtained by HIPIB irradiation. {yields} Selective ablation of element/impurity phase having lower melting point is observed. {yields} More importantly, microstructural refinement occurred on the irradiated surface. {yields} The modified layer exhibited a significantly improved corrosion resistance. {yields} Improved corrosion resistance is ascribed to the combined effect induced by HIPIB.

  19. Management of Respiratory Motion in Extracorporeal High-Intensity Focused Ultrasound Treatment in Upper Abdominal Organs: Current Status and Perspectives

    SciTech Connect (OSTI)

    Muller, A., E-mail: arnaud.muller@chu-lyon.fr [Centre Hospitalier Lyon Sud, Service de Radiologie, Hospices Civils de Lyon (France); Petrusca, L.; Auboiroux, V. [University of Geneva, Department of Radiology, Faculty of Medicine (Switzerland)] [University of Geneva, Department of Radiology, Faculty of Medicine (Switzerland); Valette, P. J. [Centre Hospitalier Lyon Sud, Service de Radiologie, Hospices Civils de Lyon (France)] [Centre Hospitalier Lyon Sud, Service de Radiologie, Hospices Civils de Lyon (France); Salomir, R. [University of Geneva, Department of Radiology, Faculty of Medicine (Switzerland)] [University of Geneva, Department of Radiology, Faculty of Medicine (Switzerland); Cotton, F. [Centre Hospitalier Lyon Sud, Service de Radiologie, Hospices Civils de Lyon (France)] [Centre Hospitalier Lyon Sud, Service de Radiologie, Hospices Civils de Lyon (France)

    2013-12-15

    Extracorporeal high-intensity focused ultrasound (HIFU) is a minimally invasive therapy considered with increased interest for the ablation of small tumors in deeply located organs while sparing surrounding critical tissues. A multitude of preclinical and clinical studies have showed the feasibility of the method; however, concurrently they showed several obstacles, among which the management of respiratory motion of abdominal organs is at the forefront. The aim of this review is to describe the different methods that have been proposed for managing respiratory motion and to identify their advantages and weaknesses. First, we specify the characteristics of respiratory motion for the liver, kidneys, and pancreas and the problems it causes during HIFU planning, treatment, and monitoring. Second, we make an inventory of the preclinical and clinical approaches used to overcome the problem of organ motion. Third, we analyze their respective benefits and drawbacks to identify the remaining physical, technological, and clinical challenges. We thereby consider the outlook of motion compensation techniques and those that would be the most suitable for clinical use, particularly under magnetic resonance thermometry monitoring.

  20. MR-Guided High-Intensity Focused Ultrasound Ablation of Breast Cancer with a Dedicated Breast Platform

    SciTech Connect (OSTI)

    Merckel, Laura G.; Bartels, Lambertus W.; Koehler, Max O.; Bongard, H. J. G. Desiree van den; Deckers, Roel; Mali, Willem P. Th. M.; Binkert, Christoph A.; Moonen, Chrit T.; Gilhuijs, Kenneth G. A. Bosch, Maurice A. A. J. van den

    2013-04-15

    Optimizing the treatment of breast cancer remains a major topic of interest. In current clinical practice, breast-conserving therapy is the standard of care for patients with localized breast cancer. Technological developments have fueled interest in less invasive breast cancer treatment. Magnetic resonance-guided high-intensity focused ultrasound (MR-HIFU) is a completely noninvasive ablation technique. Focused beams of ultrasound are used for ablation of the target lesion without disrupting the skin and subcutaneous tissues in the beam path. MRI is an excellent imaging method for tumor targeting, treatment monitoring, and evaluation of treatment results. The combination of HIFU and MR imaging offers an opportunity for image-guided ablation of breast cancer. Previous studies of MR-HIFU in breast cancer patients reported a limited efficacy, which hampered the clinical translation of this technique. These prior studies were performed without an MR-HIFU system specifically developed for breast cancer treatment. In this article, a novel and dedicated MR-HIFU breast platform is presented. This system has been designed for safe and effective MR-HIFU ablation of breast cancer. Furthermore, both clinical and technical challenges are discussed, which have to be solved before MR-HIFU ablation of breast cancer can be implemented in routine clinical practice.

  1. A high-intensity, pulsed supersonii:, carbon source aivith C("Pi> kinetic energies of 0.08-0.7 eV for crossed beam experiments

    E-Print Network [OSTI]

    Kaiser, Ralf I.

    1 A high-intensity, pulsed supersonii:, carbon source aivith C("Pi> kinetic energies of 0.08-0.7 e the laser pulse, the pulsed valve, and a chopper wheel located 40 mm after the laser ablation. Neither. INTRODUCTION Chemical reactions of ground state atomic carbon C(3Pj) play a major role in combustion processes

  2. Trapping and Destruction of Long-Range High-Intensity Optical Filaments by Molecular Quantum Wakes in Air

    E-Print Network [OSTI]

    Milchberg, Howard

    in Air S. Varma, Y.-H. Chen, and H. M. Milchberg Institute for Research in Electronics and Applied in atmospheric air on the long-range filamentary propagation of intense femtosecond laser pulses. In a pump following a pump pulse filamenting in air has a dramatic effect on the propagation of an intense probe pulse

  3. Searching for minicharged particles via birefringence, dichroism and Raman spectroscopy of the vacuum polarized by a high-intensity laser wave

    SciTech Connect (OSTI)

    Villalba-Chvez, S. Mller, C.

    2013-12-15

    Absorption and dispersion of probe photons in the field of a high-intensity circularly polarized laser wave are investigated. The optical theorem is applied for determining the absorption coefficients in terms of the imaginary part of the vacuum polarization tensor. Compact expressions for the vacuum refraction indices and the photon absorption coefficients are obtained in various asymptotic regimes of interest. The outcomes of this analysis reveal that, far from the region relatively close to the threshold of the two-photon reaction, the birefringence and dichroism of the vacuum are small and, in some cases, strongly suppressed. On the contrary, in a vicinity of the region in which the photo-production of a pair occurs, these optical properties are manifest with lasers of moderate intensities. We take advantage of such a property in the search of minicharged particles by considering high-precision polarimetric experiments. In addition, Raman-like electromagnetic waves resulting from the inelastic part of the vacuum polarization tensor are suggested as an alternative form for finding exclusion limits on these hypothetical charge carriers. The envisaged parameters of upcoming high-intensity laser facilities are used for establishing upper bounds on the minicharged particles. -- Highlights: Via dichroism and birefringence of the vacuum by a strong laser wave, minicharged particles can be probed. The discovery potential is the highest in a vicinity of the first pair production threshold. As alternative observable, Raman scattered waves are put forward.

  4. Use of a Linear Paul Trap to Study Random Noise-Induced Beam Degradation in High-Intensity Accelerators

    E-Print Network [OSTI]

    Gilson, Erik

    -Intensity Accelerators Moses Chung* Accelerator Physics Center, Fermi National Accelerator Laboratory, Batavia, Illinois equivalence between an alternating-gradient (AG) focusing system and a linear Paul trap system. It is observed that externally driven noise continuously produces a nonthermal tail of trapped ions

  5. Measuring the strong electrostatic and magnetic fields with proton radiography for ultra-high intensity laser channeling on fast ignition

    SciTech Connect (OSTI)

    Uematsu, Y.; Iwawaki, T.; Habara, H., E-mail: habara@eei.eng.osaka-u.ac.jp; Tanaka, K. A. [Graduate School of Engineering, Osaka University, Osaka 565-0871 (Japan); Ivancic, S.; Theobald, W. [Laboratory for Laser Energetics, 250 East River Road, Rochester, New York 14623-1299 (United States); Lei, A. L. [Shanghai Institute of Laser Plasma, 201800 Shanghai (China)

    2014-11-15

    In order to investigate the intense laser propagation and channel formation in dense plasma, we conducted an experiment with proton deflectometry on the OMEGA EP Laser facility. The proton image was analyzed by tracing the trajectory of mono-energetic protons, which provides understanding the electric and magnetic fields that were generated around the channel. The estimated field strengths (E ? 10{sup 11} V/m and B ? 10{sup 8} G) agree with the predictions from 2D-Particle-in-cell (PIC) simulations, indicating the feasibility of the proton deflectometry technique for over-critical density plasma.

  6. Relativistic effects in the interaction of high intensity ultra-short laser pulse with collisional underdense plasma

    SciTech Connect (OSTI)

    Abedi, Samira [Physics Department, North Tehran Branch, Islamic Azad University, Tehran (Iran, Islamic Republic of); Dorranian, Davoud [Laser Lab., Plasma Physics Research Center, Science and Research Branch, Islamic Azad University, Tehran (Iran, Islamic Republic of); Abari, Mehdi Etehadi [Physics Department, Science Faculty, Shahid Beheshti University, G.C., Evin, Tehran 19839 (Iran, Islamic Republic of); Shokri, Babak [Physics Department, Science Faculty, Shahid Beheshti University, G.C., Evin, Tehran 19839 (Iran, Islamic Republic of); Laser-Plasma Research Institute, Shahid Beheshti University, G.C., Evin, Tehran 19839 (Iran, Islamic Republic of)

    2011-09-15

    In this paper, the effect of weakly relativistic ponderomotive force in the interaction of intense laser pulse with nonisothermal, underdense, collisional plasma is studied. Ponderomotive force modifies the electron density and temperature distribution. By considering the weakly relativistic effect and ohmic heating of plasma electrons, the nonlinear dielectric permittivity of plasma medium is obtained and the equation of electromagnetic wave propagation in plasma is solved. It is shown that with considering the ohmic heating of electrons and collisions, the effect of ponderomotive force in weakly relativistic regime leads to steepening the electron density profile and increases the temperature of plasma electrons noticeably. Bunches of electrons in plasma become narrower. By increasing the laser pulse strength, the wavelength of density oscillations decreases. In this regime of laser-plasma interaction, electron temperature increases sharply by increasing the intensity of laser pulse. The amplitude of electric and magnetic fields increases by increasing the laser pulse energy while their wavelength decreases and they lost their sinusoidal form.

  7. Neutron Halo Isomers in Stable Nuclei and their Possible Application for the Production of Low Energy, Pulsed, Polarized Neutron Beams of High Intensity and High Brilliance

    E-Print Network [OSTI]

    D. Habs; M. Gross; P. G. Thirolf; P. Bni

    2010-09-30

    We propose to search for neutron halo isomers populated via $\\gamma$-capture in stable nuclei with mass numbers of about A=140-180 or A=40-60, where the $4s_{1/2}$ or $3s_{1/2}$ neutron shell model state reaches zero binding energy. These halo nuclei can be produced for the first time with new $\\gamma$-beams of high intensity and small band width ($\\le$ 0.1%) achievable via Compton back-scattering off brilliant electron beams thus offering a promising perspective to selectively populate these isomers with small separation energies of 1 eV to a few keV. Similar to single-neutron halo states for very light, extremely neutron-rich, radioactive nuclei \\cite{hansen95,tanihata96,aumann00}, the low neutron separation energy and short-range nuclear force allows the neutron to tunnel far out into free space much beyond the nuclear core radius. This results in prolonged half lives of the isomers for the $\\gamma$-decay back to the ground state in the 100 ps-$\\mu$s range. Similar to the treatment of photodisintegration of the deuteron, the neutron release from the neutron halo isomer via a second, low-energy, intense photon beam has a known much larger cross section with a typical energy threshold behavior. In the second step, the neutrons can be released as a low-energy, pulsed, polarized neutron beam of high intensity and high brilliance, possibly being much superior to presently existing beams from reactors or spallation neutron sources.

  8. Long distance nu_e -> nu_mu transitions and CP-violation with high intensity beta-beams

    E-Print Network [OSTI]

    Carlo Rubbia

    2013-06-10

    The recent experimental determinations of a large theta_13 angle have opened the way to a determination of the mass hierarchy and of the CP-violating phase. Experiments based on horn produced (anti-)neutrino conventional beams are presently under development. The event rates are marginal for a definitive search, since they require very intense beams and extremely large detector masses. Zucchelli has proposed a method in which pure (anti-)nu_e beams are generated by the beta-decay of relativistic radio-nuclides stored in a high energy storage ring pointing towards a far away neutrino detector. Since they have a much smaller transverse momentum distribution, the neutrino flux will be much more narrowly concentrated than with a horn. The isomeric doublet Li-8 (anti-nu_e, tau_1/2=0.84s) and B-8 (nu_e, tau_1/2=0.77s) has been studied. Neutrino and antineutrino beams are produced with an average transverse momentum of about 6.5 MeV/c. Radioactive ions may be generated with a dedicated table-top storage ring to supply a suitable ion source to be accelerated at high energies either at FNAL or at CERN. Ions should then extracted from the accelerator and accumulated in a decay storage ring with a long straight section pointing toward the neutrino detector. A massive detector based on liquid Argon technology is probably offering the best opportunities for such future programme. The present ICARUS LAr-TPC experiment has already collected at LNGS events in the relevant neutrino energy region. They should provide a first evidence for a conclusive experimental study of the competing signals and more generally for the actual feasibility of the beta-beam option in a search of the CP violating phase. Additional data may be provided in the near future with the ICARUS and MicroBooNe neutrino experiments located at a short distance neutrino beam and that will collect a much larger number of neutrino events.

  9. Study of 18 keV K-? x-ray emission from high intensity femtosecond laser produced plasma

    SciTech Connect (OSTI)

    Arora, V., E-mail: arora@rrcat.gov.in; Naik, P. A.; Chakera, J. A.; Bagchi, S.; Tayyab, M.; Gupta, P. D. [Laser Plasma Division, Raja Rammana Centre for Advanced Technology, Indore 452 013 (India)] [Laser Plasma Division, Raja Rammana Centre for Advanced Technology, Indore 452 013 (India)

    2014-04-15

    We report an experimental study on the optimization of a laser plasma based x-ray source of ultra-short duration K-? line radiation. The interaction of pulses from a CPA based Ti:sapphire laser (10 TW, 45 fs, 10 Hz) system with magnesium, titanium, iron and copper solid target generates bright 1-8 keV K-? x-ray radiation. The x-ray yield was optimized with the laser pulse duration (at fixed fluence) which is varied in the range of 45 fs to 1.4 ps. It showed a maximum at laser pulse duration of ?740 fs, 420 fs, 350 and 250 fs for Mg (1.3 keV), Ti (4.5 keV), Fe (6.4 keV) and Cu (8.05 keV) respectively. The x-ray yield is observed to be independent of the sign of the chirp. The scaling of the K-? yield (I{sub x} ? I{sub L}{sup ?}) for 45 fs and optimized pulse duration were measured for laser intensities in the region of 3 10{sup 14} 8 10{sup 17}. The x-ray yield shows a much faster scaling exponent ? = 1.5, 2.1, 2.4 and 2.6 for Mg, Ti, Fe and Cu respectively at optimized pulse duration compared to scaling exponent of 0.65, 1.3, 1.5, and 1.7 obtained for 45 fs duration laser pulses. The laser to x-ray energy conversion efficiencies obtained for different target materials are ?{sub Mg} = 1.2 10{sup ?5}, ?{sub Ti} = 3.1 10{sup ?5}, ?{sub Fe} = 2.7 10{sup ?5}, ?{sub Cu} = 1.9 10{sup ?5}. The results have been explained from the efficient generation of optimal energy hot electrons at longer laser pulse duration. The faster scaling observed at optimal pulse duration indicates that the x-ray source is generated at the target surface and saturation of x-ray emission would appear at larger laser fluence. An example of utilization of the source for measurement of shock-wave profiles in a silicon crystal by time resolved x-ray diffraction is also presented.

  10. High-Intensity Proton Accelerator

    SciTech Connect (OSTI)

    Jay L. Hirshfield

    2011-12-27

    Analysis is presented for an eight-cavity proton cyclotron accelerator that could have advantages as compared with other accelerators because of its potentially high acceleration gradient. The high gradient is possible since protons orbit in a sequence of TE111 rotating mode cavities of equally diminishing frequencies with path lengths during acceleration that greatly exceed the cavity lengths. As the cavities operate at sequential harmonics of a basic repetition frequency, phase synchronism can be maintained over a relatively wide injection phase window without undue beam emittance growth. It is shown that use of radial vanes can allow cavity designs with significantly smaller radii, as compared with simple cylindrical cavities. Preliminary beam transport studies show that acceptable extraction and focusing of a proton beam after cyclic motion in this accelerator should be possible. Progress is also reported on design and tests of a four-cavity electron counterpart accelerator for experiments to study effects on beam quality arising from variations injection phase window width. This device is powered by four 500-MW pulsed amplifiers at 1500, 1800, 2100, and 2400 MHz that provide phase synchronous outputs, since they are driven from a with harmonics derived from a phase-locked 300 MHz source.

  11. Continuation of full-scale three-dimensional numerical experiments on high-intensity particle and laser beam-matter interactions

    SciTech Connect (OSTI)

    Mori, Warren, B.

    2012-12-01

    We present results from the grant entitled, ???¢????????Continuation of full-scale three-dimensional numerical experiments on high-intensity particle and laser beam-matter interactions.???¢??????? The research significantly advanced the understanding of basic high-energy density science (HEDS) on ultra intense laser and particle beam plasma interactions. This advancement in understanding was then used to to aid in the quest to make 1 GeV to 500 GeV plasma based accelerator stages. The work blended basic research with three-dimensions fully nonlinear and fully kinetic simulations including full-scale modeling of ongoing or planned experiments. The primary tool was three-dimensional particle-in-cell simulations. The simulations provided a test bed for theoretical ideas and models as well as a method to guide experiments. The research also included careful benchmarking of codes against experiment. High-fidelity full-scale modeling provided a means to extrapolate parameters into regimes that were not accessible to current or near term experiments, thereby allowing concepts to be tested with confidence before tens to hundreds of millions of dollars were spent building facilities. The research allowed the development of a hierarchy of PIC codes and diagnostics that is one of the most advanced in the world.

  12. Characterisation of a MeV Bremsstrahlung x-ray source produced from a high intensity laser for high areal density object radiography

    SciTech Connect (OSTI)

    Courtois, C.; Compant La Fontaine, A.; Bazzoli, S.; Bourgade, J. L.; Gazave, J.; Lagrange, J. M.; Landoas, O.; Dain, L. Le; Pichoff, N. [CEA, DAM, DIF, F-91297 Arpajon (France)] [CEA, DAM, DIF, F-91297 Arpajon (France); Edwards, R.; Aedy, C. [AWE Plc., Aldermaston, Reading RG7 4PR (United Kingdom)] [AWE Plc., Aldermaston, Reading RG7 4PR (United Kingdom); Mastrosimone, D.; Pien, G.; Stoeckl, C. [Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623 (United States)] [Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623 (United States)

    2013-08-15

    Results of an experiment to characterise a MeV Bremsstrahlung x-ray emission created by a short (<10 ps) pulse, high intensity (1.4 10{sup 19} W/cm{sup 2}) laser are presented. X-ray emission is characterized using several diagnostics; nuclear activation measurements, a calibrated hard x-ray spectrometer, and dosimeters. Results from the reconstructed x-ray energy spectra are consistent with numerical simulations using the PIC and Monte Carlo codes between 0.3 and 30 MeV. The intense Bremsstrahlung x-ray source is used to radiograph an image quality indicator (IQI) heavily filtered with thick tungsten absorbers. Observations suggest that internal features of the IQI can be resolved up to an external areal density of 85 g/cm{sup 2}. The x-ray source size, inferred by the radiography of a thick resolution grid, is estimated to be approximately 400 ?m (full width half maximum of the x-ray source Point Spread Function)

  13. Relativistic self-focusing of ultra-high intensity X-ray laser beams in warm quantum plasma with upward density profile

    SciTech Connect (OSTI)

    Habibi, M.; Ghamari, F.

    2014-05-15

    The results of a numerical study of high-intensity X-ray laser beam interaction with warm quantum plasma (WQP) are presented. By means of an upward ramp density profile combined with quantum factors specially the Fermi velocity, we have demonstrated significant relativistic self-focusing (RSF) of a Gaussian electromagnetic beam in the WQP where the Fermi temperature term in the dielectric function is important. For this purpose, we have considered the quantum hydrodynamics model that modifies refractive index of inhomogeneous WQPs with the inclusion of quantum correction through the quantum statistical and diffraction effects in the relativistic regime. Also, to better illustration of the physical difference between warm and cold quantum plasmas and their effect on the RSF, we have derived the envelope equation governing the spot size of X-ray laser beam in Q-plasmas. In addition to the upward ramp density profile, we have found that the quantum effects would be caused much higher oscillation and better focusing of X-ray laser beam in the WQP compared to that of cold quantum case. Our computational results reveal the importance of the use of electrons density profile and Fermi speed in enhancing self-focusing of laser beam.

  14. Abstract The Accelerator Driven Systems (ADS) require high power beam (>10 MW) to irradiate the neutron production target. To mitigate the effect of the high power, and high intensity beam on the target we propose to reduce the intensity of the beam by un

    E-Print Network [OSTI]

    McDonald, Kirk

    the neutron production target. To mitigate the effect of the high power, and high intensity beam on the targetAbstract The Accelerator Driven Systems (ADS) require high power beam (>10 MW) to irradiate a High-Power Beam* M. Haj Tahar, F Meot, P. Pile, *N. Tsoupas Brookhaven National Laboratory Upton, NY

  15. A high intensity 200 mA proton source for the FRANZ-Project (Frankfurt-Neutron-Source at the Stern-Gerlach-Center)

    SciTech Connect (OSTI)

    Schweizer, W. Ratzinger, U.; Klump, B.; Volk, K.

    2014-02-15

    At the University of Frankfurt a high current proton source has been developed and tested for the FRANZ-Project [U. Ratzinger, L. P. Chau, O. Meusel, A. Schempp, K. Volk, M. Heil, F. Kppeler, and R. Stieglitz, Intense pulsed neutron source FRANZ in the 1500 keV range, ICANS-XVIII Proceedings, Dongguan, April 2007, p. 210]. The ion source is a filament driven arc discharge ion source. The new design consists of a plasma generator, equipped with a filter magnet to produce nearly pure proton beams (92 %), and a compact triode extraction system. The beam current density has been enhanced up to 521 mA/cm{sup 2}. Using an emission opening radius of 4 mm, a proton beam current of 240 mA at 50 keV beam energy in continuous wave mode (cw) has been extracted. This paper will present the current status of the proton source including experimental results of detailed investigations of the beam composition in dependence of different plasma parameters. Both, cw and pulsed mode were studied. Furthermore, the performance of the ion source was studied with deuterium as working gas.

  16. Aspects of a high intensity neutron source

    E-Print Network [OSTI]

    Chapman, Peter H. (Peter Henry)

    2010-01-01

    A unique methodology for creating a neutron source model was developed for deuterons and protons incident on solid phase beryllium and lithium targets. This model was then validated against experimental results already ...

  17. High-intensity beam collimation and targetry

    SciTech Connect (OSTI)

    Mokhov, N.V.; /Fermilab

    2006-11-01

    Principles, design criteria and realization of reliable collimation systems for the high-power accelerators and hadron colliders are described. Functionality of collimators as the key elements of the machine protection system are discussed along with the substantial progress on the crystal collimation front. The key issues are considered in design of high-power target systems and achieving their best performance. Simulation code requirements are presented.

  18. Neutralized transport of high intensity beams

    E-Print Network [OSTI]

    2003-01-01

    by a metal arc source and an RF plasma source. Effects ofexperiments. ARC SOURCE MEVVA Source (plasma plug) RF

  19. High intensity SRF proton linac workshop (vugraphs)

    SciTech Connect (OSTI)

    Rusnak, B.A.

    1995-11-01

    The meeting is divided into four sections. The first section is the general introduction and included opening remarks and an overview of APT (accelerator product of tritium). The second section contains vugraphs from the cavity-structures working group. The third section is comprised of vugraphs from the couplers and rf working group. And the fourth section contains vugraphs of the system integration group.

  20. RELATIVISTIC (E > 0.6, > 2.0, AND > 4.0 MeV) ELECTRON ACCELERATION AT GEOSYNCHRONOUS ORBIT DURING HIGH-INTENSITY, LONG-DURATION, CONTINUOUS AE ACTIVITY (HILDCAA) EVENTS

    SciTech Connect (OSTI)

    Hajra, Rajkumar; Echer, Ezequiel; Gonzalez, Walter D.; Tsurutani, Bruce T.; Santolik, Ondrej

    2015-01-20

    Radiation-belt relativistic (E > 0.6, > 2.0, and > 4.0MeV) electron acceleration is studied for solar cycle 23 (1995-2008). High-intensity, long-duration, continuous AE activity (HILDCAA) events are considered as the basis of the analyses. All of the 35 HILDCAA events under study were found to be characterized by flux enhancements of magnetospheric relativistic electrons of all three energies compared to the pre-event flux levels. For the E > 2.0MeV electron fluxes, enhancement of >50% occurred during 100% of HILDCAAs. Cluster-4 passes were examined for electromagnetic chorus waves in the 5 < L < 10 and 0 < MLT < 12 region when wave data were available. Fully 100% of these HILDCAA cases were associated with enhanced whistler-mode chorus waves. The enhancements of E > 0.6, > 2.0, and > 4.0MeV electrons occurred ?1.0day, ?1.5days, and ?2.5days after the statistical HILDCAA onset, respectively. The statistical acceleration rates for the three energy ranges were ?1.8 10{sup 5}, 2.2 10{sup 3}, and 1.0 10{sup 1} cm{sup 2} s{sup 1} sr{sup 1} d{sup 1}, respectively. The relativistic electron-decay timescales were determined to be ?7.7, 5.5, and 4.0days for the three energy ranges, respectively. The HILDCAAs were divided into short-duration (D ? 3days) and long-duration (D > 3days) events to study the dependence of relativistic electron variation on HILDCAA duration. For long-duration events, the flux enhancements during HILDCAAs with respect to pre-event fluxes were ?290%, 520%, and 82% for E > 0.6, > 2.0, and > 4.0MeV electrons, respectively. The enhancements were ?250%, 400%, and 27% respectively, for short-duration events. The results are discussed with respect to the current understanding of radiation-belt dynamics.

  1. T-547: Microsoft Windows Human Interface Device (HID) Vulnerability

    Broader source: Energy.gov [DOE]

    Microsoft Windows does not properly warn the user before enabling additional Human Interface Device (HID) functionality over USB, which allows user-assisted attackers to execute arbitrary programs via crafted USB data, as demonstrated by keyboard and mouse data sent by malware on a Smartphone that the user connected to the computer.

  2. A LIQUID FILM STRIPPER FOR HIGH INTENSITY HEAVY ION BEAMS

    E-Print Network [OSTI]

    Leemann, B.T.

    2010-01-01

    arrangement. A centrifugal pump provides the circulation ofenclosed, vacuum tight centrifugal pump solved this problem.

  3. Max Tech and Beyond: High-Intensity Discharge Lamps

    E-Print Network [OSTI]

    Scholand, Michael

    2012-01-01

    in the price of LED lighting (DOE, 2011). This forecast Maxsolid-state lighting and LED lighting in particular, the barapplications, such as street lighting. LED devices recently

  4. High Intensity, Pulsed, D-D Neutron Generator

    E-Print Network [OSTI]

    Williams, D. L.

    2010-01-01

    application. Whether thermal activation (measuring prompt orthermal neutrons for both prompt and delayed gamma neutron activation

  5. High Intensity, Pulsed, D-D Neutron Generator

    E-Print Network [OSTI]

    Williams, D. L.

    2010-01-01

    Pulsed, D-D Neutron Generator Authors: D. L. Williams, J. H.of Advanced Neutron/Gamma Generators for Imaging and ActiveN. K. -N. Leung, D-D neutron generator development at LBNL

  6. Response of High-Tc Superconductor Metamaterials to High Intensity...

    Office of Scientific and Technical Information (OSTI)

    and Electromagnetic Crystal Structures ; 2012-06-03 - 2012-06-08 ; Santa Fe, New Mexico, United States Research Org: Los Alamos National Laboratory (LANL) Sponsoring Org:...

  7. Radiation Dose Measurement for High-Intensity Laser Interactions...

    Office of Scientific and Technical Information (OSTI)

    Org: SLAC National Accelerator Laboratory (SLAC) Sponsoring Org: US DOE Office of Science (DOE SC) Country of Publication: United States Language: English Subject: OPTICS, SAFETY...

  8. High-Intensity Silicon Vertical Multi-Junction Solar Cells |...

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

    operation for optimum compatibility with most power processing loads. An active cooling system in the StarGen solar concentrator removes heat from the PhotoVolt cells,...

  9. PHOTOACOUSTIC IMAGING AND HIGH INTENSITY FOCUSED ULTRASOUND IN BIOMEDICAL APPLICATIONS

    E-Print Network [OSTI]

    Jo, Janggu

    2014-08-31

    performance of the reach-to-grasp task. .40 xii Figure 5.1 Changes of the linear propagating spherical waveforms generated from sphere target on the different distances. ............................................46 Figure 5.2 Distortion of propagating... seconds. .............................................................................................69 Figure 6.6 Cavitation signals detected by a PCD as a function of time. (a) The signal generated withHIFU -only. (b) The signal generated with HIFU...

  10. Simulation of High-Intensity Mercury Jet Targets

    E-Print Network [OSTI]

    McDonald, Kirk

    of high speed jet cavitation and breakup FronTier MHD, a 3D code with explicitly tracked interfaces for cavitation Realistic equation of states Simulation studies focus on Distortion of mercury jets entering Smoothed Particle Hydrodynamics (SPH) Code A new code for free surface / multiphase MHD flows is being

  11. NEUTRALIZED TRANSPORT OF HIGH INTENSITY BEAMS E. Henestroza #

    E-Print Network [OSTI]

    Gilson, Erik

    system is injected into a neutralized drift section. The neutralization is provided by a metal arc source and an RF plasma source. Effects of a "plasma plug", where electrons are extracted from a localized plasma as the "volumetric plasma", where neutralization is provided by the plasma laid down along the ion path, are both

  12. Study of a final focus system for high intensity beams

    E-Print Network [OSTI]

    2004-01-01

    section with a cathode arc plasma plug, an RF plasma source,consisting of a cathode arc plasma plug and an RF plasmaSource chamber Cathode arc RF plasma source Plasma plug

  13. High-Intensity Plasma Glass Melter Final Technical Report

    SciTech Connect (OSTI)

    Gonterman, J. Ronald; Weinstein, Michael A.

    2006-10-27

    The purpose of this project was to demonstrate the energy efficiency and reduced emissions that can be obtained with a dual torch DC plasma transferred arc-melting system. Plasmelt Glass Technologies, LLC was formed to solicit and execute the project, which utilize a full-scale test melter system. The system is similar to the one that was originally constructed by Johns Manville, but Plasmelt has added significant improvements to the torch design and melter system that has extended the original JM short torch lives. The original JM design has been shown to achieve melt rates 5 to 10 times faster than conventional gas or electric melting, with improved energy efficiency and reduced emissions. This project began on 7/28/2003 and ended 7/27/06. A laboratory scale melter was designed, constructed, and operated to conduct multiple experimental melting trials on various glass compositions. Glass quality was assessed. Although the melter design is generic and equally applicable to all sectors within the glass industry, the development of this melter has focused primarily on fiberglass with additional exploratory melting trials of frits, specialty, and minerals-melting applications. Throughput, energy efficiency, and glass quality have been shown to be heavily dependent on the selected glass composition. During this project, Plasmelt completed the proof-of-concept work in our Boulder, CO Lab to show the technical feasibility of this transferred-arc plasma melter. Late in the project, the work was focused on developing the processes and evaluating the economic viability of plasma melting aimed at the specific glasses of interest to specific client companies. Post project work is on going with client companies to address broader non-glass materials such as refractories and industrial minerals. Exploratory melting trials have been conducted on several glasses of commercial interest including: C-glass, E-glass, S-Glass, AR-Glass, B-glass, Lighting Glass, NE-Glass, and various frits. Exploratory melts of non-glassy materials, such as wollastonite, zirconium silicate, and alumino-silicate melts were successfully done indicating that plasma melting has potential application beyond glass. Experimental results were generated that show the high quality of plasma-melted fiberglass compositions, such as E-glass, can result in good fiberizing performance. Fiberizing performance and tensile strength data were achieved during the project to support this conclusion. High seed counts are a feature of the current lab scale melter and must be dealt with via other means, since fining work was outside the scope of this project.

  14. Max Tech and Beyond: High-Intensity Discharge Lamps

    E-Print Network [OSTI]

    Scholand, Michael

    2012-01-01

    Pressure Sodium Light Emitting Diode Lamp Lumen Depreciationit is expected that light emitting diode (LED) lamps willLED Technology Light emitting diodes (LEDs) are an emerging

  15. Very high efficacy electrodeless high intensity discharge lamps

    DOE Patents [OSTI]

    Johnson, Peter D. (Schenectady, NY)

    1987-01-01

    An electrodeless arc lamp comprises an outer jacket hermetically sealing and thermally protecting an arc tube inside which has an upwardly convex bottom center section. The absence of chemically reactive electrode material makes it possible to use metal halides other than iodides. The tube contains chlorides, bromides or a mixture thereof of scandium and sodium in a nearly equimolar relationship in addition to mercury and an inert gas. Good color balance can be obtained at reduced reservoir temperature and with less power loss. Reduction in wall temperature makes it possible to attain longer lamp life.

  16. Laboratory Astrophysics Using High Intensity Particle and Photon...

    Office of Scientific and Technical Information (OSTI)

    We will give examples on how frontier phenomena such as black holes, supernovae, gamma ray bursts, ultra high-energy cosmic rays, etc., can be investigated in the laboratory...

  17. High Intensity, Pulsed, D-D Neutron Generator

    E-Print Network [OSTI]

    Williams, D. L.

    2010-01-01

    OD pipe 3 OD pipe Polyethylene shielding Hole 10 ?Hole 8 ? Polyethylene shielding Fig. 3.a. The DD-109

  18. Very high efficacy electrodeless high intensity discharge lamps

    DOE Patents [OSTI]

    Johnson, P.D.

    1985-10-03

    An electrodeless arc lamp comprises an outer jacket hermetically sealing and thermally protecting an arc tube inside which has an upwardly convex bottom center section. The absence of chemically reactive electrode material makes it possible to use metal halides other than iodides. The tube contains chlorides, bromides or a mixture thereof of scandium and sodium in a nearly equimolar relationship in addition to mercury and an inert gas. Good color balance can be obtained at reduced reservoir temperature and with less power loss. Reduction in wall temperature makes it possible to attain longer lamp life.

  19. MATERIAL STUDIES FOR PULSED HIGH-INTENSITY PROTON BEAM TARGETS

    E-Print Network [OSTI]

    McDonald, Kirk

    as high-Z target to be evaluated for effects of irradiation on CTE, fracture toughness and ductility loss or strength) degrade with radiation is unknown. Titanium Ti-6Al-4V alloy The evaluation of the fracture toughness changes due to irradiation is of interest regarding this alloy that combines good tensile strength

  20. MATERIAL IRRADIATION STUDIES HIGH-INTENSITY PROTON BEAM TARGETS

    E-Print Network [OSTI]

    McDonald, Kirk

    loss Strength loss/gain Fracture toughness Physical property changes CTE Diffusivity Heat capacityBeMet Nickel-Plated Aluminum Material Matrix TESTS (on-going + upcoming) Mechanical property changes Ductility (C) Strain(%) Gum (unirradiated) Gum (irradiated) GUM Metal Strengthens but clearly looses the "super-ductility

  1. DESIGN OF HIGH INTENSITY MUON SOURCES HISHAM KAMAL SAYED

    E-Print Network [OSTI]

    McDonald, Kirk

    /19/15 OUTLINE Goal : Op0mize number of useful muons Involved systems: - Carbon parameters: Carbon target length, radius, and 0lt angle to solenoid axis 2 momentum spread Challenges with muon beams: - Short life0me ~ 2

  2. Response of High-Tc Superconductor Metamaterials to High Intensity...

    Office of Scientific and Technical Information (OSTI)

    Laboratory (LANL) LDRD United States 2012-08-13 English Conference Conference: SPIE Optics+Photonics ; 2012-08-12 - 2012-08-16 ; San Diego, California, United States Medium: ED...

  3. Laboratory Astrophysics Using High Intensity Particle and Photon Beams

    Office of Scientific and Technical Information (OSTI)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfate Reducing(Journalspectroscopy of aerosols(Technical Report)(Conference) | SciTech Connect

  4. Laboratory Astrophysics Using High Intensity Particle and Photon Beams

    Office of Scientific and Technical Information (OSTI)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfate Reducing(Journalspectroscopy of aerosols(Technical Report)(Conference) | SciTech

  5. Fourth order resonance of a high intensity linear accelerator* (Journal

    Office of Scientific and Technical Information (OSTI)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfate Reducing(Journal Article) |production atmeasurementComparisonArticle)sNN=5.02

  6. Practical transverse matching of a high intensity SNS linac (Journal

    Office of Scientific and Technical Information (OSTI)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfateSciTech ConnectSpeeding accessusers'(x≤2) surface: A combined scanningusingArticle) |

  7. High Intensity Gamma-Ray Source (HIGS) Program Advisory Committee

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration would likeUniverse (Journalvivo Low-DoseOptionsthroughput spectrometerEnergy

  8. High-Intensity Discharge Lighting Basics | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustmentsShirley Ann JacksonDepartment ofOffice ofofWindUpcomingcanGrid Integrationheat pumpJack M. Holl.

  9. Promising Technology: High Bay Light-Emitting Diodes

    Broader source: Energy.gov [DOE]

    High bay LEDs offer several advantages over conventional high intensity discharge (HID) luminaires including longer lifetimes, reduced maintenance costs, and lower energy consumption.

  10. Promising Technology: Parking Lot Light-Emitting Diodes with Controls

    Broader source: Energy.gov [DOE]

    LEDs offer several advantages over conventional high intensity discharge (HID) luminaires. LEDs have longer life times, reduced maintenance and operating costs, superior color rendition, and lower energy consumption.

  11. Evaluation of High-intensity and Low-intensity Preconditioning Systems

    E-Print Network [OSTI]

    Orsak, Andrew Nathan

    2012-02-14

    Steer calves n = 345 (year 1 n = 183; 253 35 kg, year 2 n = 162; 241 36 kg initial BW) were used to evaluate 56-d preconditioning systems in each of two years. Angus- and Charolais-sired calves out of crossbred dams were assigned to systems...

  12. J.M. Butler USACIL talk on NIST HID projects November 14, 2006 http://www.cstl.nist.gov/biotech/strbase/NISTpub.htm 1

    E-Print Network [OSTI]

    J.M. Butler USACIL talk on NIST HID projects November 14, 2006 http://www.cstl.nist.gov/biotech available for the purpose. Our publications and presentations are made available at: http://www.cstl.nist.gov/biotech USACIL talk on NIST HID projects November 14, 2006 http://www.cstl.nist.gov/biotech/strbase/NISTpub.htm 2

  13. Mechanical Damage from Cavitation in High Intensity Focused Ultrasound Accelerated Thrombolysis

    E-Print Network [OSTI]

    Weiss, Hope

    2012-01-01

    for Mechanical Damage . . . . . . . . . . . . . . . .3.3.3 Connection to Mechanical Damage . . . . . . 3.41.2.5 Assessing mechanical damage . . 1.3 Bubble

  14. Aspects of the physics, chemistry, and technology of high intensity heavy ion sources

    SciTech Connect (OSTI)

    Alton, G.D.

    1980-01-01

    Particular emphasis is placed on the technology of plasma discharge ion sources which utilize solid elemental or molecular compounds to produce vapor for the ionization process. A brief discussion is made of the elementary concepts underlying the formation and extraction of ion beams from plasma discharge sources. A limited review of low charge state positive ion sources suitable for accelerator use is also given.

  15. SUPER-INVAR AS A TARGET FOR A PULSED HIGH-INTENSITY PROTON BEAM

    E-Print Network [OSTI]

    McDonald, Kirk

    beam enters from the top. The irradiation was done at the Brookhaven Linac Iso- tope Producer (BLIP, with holder, were immersed in a water tank for target cooling purposes. In addition, water was directed

  16. Contribution to the numerical study of turbulence in high intensity discharge lamps

    SciTech Connect (OSTI)

    Kaziz, S.; Ben Ahmed, R.; Helali, H.; Gazzah, H.; Charrada, K. [Unite d'Etude des Milieux Ionises et Reactifs, IPEIM, 5019 route de Kairouan Monastir (Tunisia)

    2011-07-15

    We present in this paper a comparison between results obtained with a laminar and turbulent models for high-pressure mercury arc. The two models are based on the resolution of bidimensional time-dependent equations by a semi-implicit finite-element code. The numerical computation of turbulent model is solved with large eddy simulation model; this approach takes into account the various scales of turbulence by a filtering method on each scale. The results show the quantitative influence of turbulence on the flow fields and also the difference between laminar and turbulent effects on the dynamic thermal behaviour and on the characteristics of the discharge.

  17. ECOS-LINCE: A HIGH INTENSITY MULTI-ION SUPERCONDUCTING LINAC FOR NUCLEAR STRUCTURE AND REACTIONS

    E-Print Network [OSTI]

    Boyer, Edmond

    - Nuclear astrophysics - Ion-ion collisions in plasma Applied research should be also foreseen in the fields

  18. Effect of target heating on ion-induced reactions in high-intensity laserplasma interactions

    E-Print Network [OSTI]

    Strathclyde, University of

    -produced plasmas. The protons, which result from water and hydrocarbon contami- nation layers on the surfaces that heating the solid target reduces the contamination layers, and hence the proton flux, thereby increasing

  19. INVESTIGATION OF THERAPY IMPROVEMENT USING REAL-TIME PHOTOACOUSTIC IMAGING GUIDED HIGH INTENSITY FOCUSED ULTRASOUND

    E-Print Network [OSTI]

    Cui, Huizhong

    2013-05-31

    . Although several groups showed that magnetic resonance imaging (MRI),[32, 91, 92] thermoacoustic tomography (TAT),[93] ultrasound imaging[25, 94] have the capabilities of monitoring the thermal lesion generated by HIFU in the targeted region, PAI has... modes (such as head and neck imaging), special RF coils are used to fit closely to the patients anatomy, and these coils will interfere with HIFU transducer placement. Photoacoustic imaging, also called optoacoustic imaging or thermoacoustic imaging...

  20. Workshop on Applications of High Intensity Proton Accelerators October 19 -21, 2009, FNAL

    E-Print Network [OSTI]

    McDonald, Kirk

    of the hydrodynamic response of the mercury target andg y y p y g explanation of all details of MERIT data hydrodynamic response is critical for designUnderstanding of the target hydrodynamic response is critical for design Studies of surface instabilities, jet breakup, and cavitation MHD forces reduce both jet

  1. High-intensity ion sources for accelerators with emphasis on H-beam formation and transport

    SciTech Connect (OSTI)

    Keller, Roderich [Los Alamos National Laboratory

    2009-01-01

    This paper lays out the fundamental working principles of a variety of high-current ion sources for accelerators in a tutorial manner, and gives examples of specific source types such as d. c. discharge- and rf-driven multicusp sources. Penning-type and ECR-based sources while discussing those principles, pointing out general performance limits as well as the performance parameters of specific sources. Laser-based, two-chamber-. and surface-ionization sources are briefly mentioned. Main aspects of this review are particle feed. ionization mechanism, beam formation and beam transport. Issues seen with beam formation and low-energy transport of negative hydrogen-ion beams are treated in detail.

  2. Mechanical Damage from Cavitation in High Intensity Focused Ultrasound Accelerated Thrombolysis

    E-Print Network [OSTI]

    Weiss, Hope

    2012-01-01

    Mechanical Damage . . . . . . . . . . . . . . . . . .iiiMethod for Estimation of Cavitation Damage for an EmbeddedMethod for Estimation of Cavitation Damage for an Embedded

  3. INITIAL RESULTS ON NEUTRALIZED DRIFT COMPRESSION EXPERIMENTS (NDCX-IA) FOR HIGH INTENSITY ION BEAM

    E-Print Network [OSTI]

    Gilson, Erik

    in the presence of a neutralizing plasma provide by a Al arc or MEVVA source. Given adequate neutralization makes use of a temporal velocity tilt and neutralizing plasma to achieve small pulse lengths [2]. Here tilt core induction cell, plasma source, solenoid tube for plasma channel and diagnostics such as gated

  4. Area X-ray or UV camera system for high-intensity beams

    DOE Patents [OSTI]

    Chapman, Henry N. (Livermore, CA); Bajt, Sasa (Livermore, CA); Spiller, Eberhard A. (Livermore, CA); Hau-Riege, Stefan (Fremont, CA), Marchesini, Stefano (Oakland, CA)

    2010-03-02

    A system in one embodiment includes a source for directing a beam of radiation at a sample; a multilayer mirror having a face oriented at an angle of less than 90 degrees from an axis of the beam from the source, the mirror reflecting at least a portion of the radiation after the beam encounters a sample; and a pixellated detector for detecting radiation reflected by the mirror. A method in a further embodiment includes directing a beam of radiation at a sample; reflecting at least some of the radiation diffracted by the sample; not reflecting at least a majority of the radiation that is not diffracted by the sample; and detecting at least some of the reflected radiation. A method in yet another embodiment includes directing a beam of radiation at a sample; reflecting at least some of the radiation diffracted by the sample using a multilayer mirror; and detecting at least some of the reflected radiation.

  5. Development of a PCI Based Data Acquisition Platform for High Intensity Accelerator Experiments

    E-Print Network [OSTI]

    T. Higuchi; H. Fujii; M. Ikeno; Y. Igarashi; E. Inoue; R. Itoh; H. Kodama; T. Murakami; M. Nakao; K. Nakayoshi; M. Saitoh; S. Shimazaki; S. Y. Suzuki; M. Tanaka; K. Tauchi; M. Yamauchi; Y. Yasu; G. Varner; Y. Nagasaka; T. Katayama; K. Watanabe; M. Ishizuka; S. Onozawa; C. J. Li

    2003-05-28

    Data logging at an upgraded KEKB accelerator or the J-PARC facility, currently under commission, requires a high density data acquisition platform with integrated data reduction CPUs. To follow market trends, we have developed a DAQ platform based on the PCI bus, a choice which permits a fast DAQ and a long expected lifetime of the system. The platform is a 9U-VME motherboard consisting of four slots for signal digitization modules, readout FIFOs for data buffering, and three PMC slots, on one of which resides a data reduction CPU. We have performed long term and thermal stability tests. The readout speed on the platform has been measured up to 125 MB/s in DMA mode.

  6. HIGH INTENSITY LINAC DRIVER FOR THE SPIRAL-2 PROJECT : DESIGN OF SUPERCONDUCTING 88 MHZ QUARTER WAVE

    E-Print Network [OSTI]

    Paris-Sud XI, Universit de

    . For the high-energy section of the linac, a superconducting 88 MHz Quarter Wave Resonator (beta 0.12) has been WAVE RESONATORS (BETA 0.12), POWER COUPLERS AND CRYOMODULES T. Junquera, G. Olry, H. Saugnac, J Abstract A superconducting linac driver, delivering deuterons with an energy up to 40 MeV (5 mA) and heavy

  7. Flexible pulse delay control up to picosecond for high-intensity twin electron bunches

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Zhang, Zhen; Ding, Yuantao; Emma, Paul; Huang, Zhirong; Marinelli, Agostino; Tang, Chuanxiang

    2015-09-10

    Two closely spaced electron bunches have attracted strong interest due to their applications in two color X-ray free-electron lasers as well as witness bunch acceleration in plasmas and dielectric structures. In this paper, we propose a new scheme of delay system to vary the time delay up to several picoseconds while not affecting the bunch compression. Numerical simulations based on the Linac Coherent Light Source are performed to demonstrate the feasibility of this method.

  8. The IsoDAR High Intensity H$_2^+$ Transport and Injection Tests

    E-Print Network [OSTI]

    Alonso, Jose; Calabretta, Luciano; Campo, Daniela; Celona, Luigi; Conrad, Janet M; Day, Alexandra; Castro, Giuseppe; Labrecque, Francis; Winklehner, Daniel

    2015-01-01

    This technical report reviews the tests performed at the Best Cyclotron Systems, Inc. facility in regards to developing a cost effective ion source, beam line transport system, and acceleration system capable of high H$_2^+$ current output for the IsoDAR (Isotope Decay At Rest) experiment. We begin by outlining the requirements for the IsoDAR experiment then provide overview of the Versatile Ion Source, Low Energy Beam Transport system, spiral inflector, and cyclotron. The experimental measurements are then discussed and the results are compared with a thorough set of simulation studies. Of particular importance we note that the Versatile Ion Source (VIS) proved to be a reliable ion source capable of generating a large amount of H$_2^+$ current. The results suggest that with further upgrades, the VIS could potentially be a suitable candidate for IsoDAR. The conclusion outlines the key results from our tests and introduces the forthcoming work this technical report has motivated.

  9. High power 325 MHz vector modulators for the Fermilab High Intensity Neutrino Source (HINS)

    SciTech Connect (OSTI)

    Madrak, Robyn Leigh; Wildman, David; /Fermilab

    2008-10-01

    One of the goals of the low energy 60 MeV section of the HINS H{sup -} linac [1] is to demonstrate that a total of {approx}40 RF cavities can be powered by a single 2.5 MW, 325 MHz klystron. This requires individual vector modulators at the input of each RF cavity to independently adjust the amplitude and phase of the RF input signal during the 3.5 ms RF pulse. Two versions of vector modulators have been developed; a 500 kW device for the radiofrequency quadrupole (RFQ) and a 75 kW modulator for the RF cavities. High power tests showing the vector modulator phase and amplitude responses will be presented.

  10. 2014-05-05 Issuance: Test Procedures for High-Intensity Discharge...

    Energy Savers [EERE]

    Register publication controls. This document is being made available through the Internet solely as a means to facilitate the public's access to this document. 2014-05-05 Test...

  11. High Intensity Regimes for Resonant Raman Compression N. J. Fischa, V. M. Malkina, and Z. Torokerb

    E-Print Network [OSTI]

    Department of Electrical Engineering, Technion Israel Institute of Technology, Haifa 32000, Israel ABSTRACT In order pump pulse by the plasma frequency, absorbs the pump energy through a resonant decay interaction of the two counter-propagating light waves and a plasma wave. In the pump-depletion regime, the counter

  12. MATERIAL R&D FOR HIGH-INTENSITY PROTON BEAM PROGRESS REPORT

    E-Print Network [OSTI]

    McDonald, Kirk

    strength, very low thermal expansion or high ductility #12;Experimentation with Graphite & Carbon Resilience in terms of strength/shock absorption CTE evaluation Stress-strain Fatigue Fracture Toughness and crack development/propagation Corrosion Resistance De-lamination (if a composite such as CC

  13. Studies on low energy beam transport for high intensity high charged ions at IMP

    SciTech Connect (OSTI)

    Yang, Y. Lu, W.; Fang, X.; University of Chinese Academy of Sciences, Beijing 100039 ; Sun, L. T.; Hu, Q.; Cao, Y.; Feng, Y. C.; Zhang, X. Z.; Zhao, H. W.; Xie, D. Z.

    2014-02-15

    Superconducting Electron Cyclotron Resonance ion source with Advanced design in Lanzhou (SECRAL) is an advanced fully superconducting ECR ion source at IMP designed to be operational at the microwave frequency of 1824 GHz. The existing SECRAL beam transmission line is composed of a solenoid lens and a 110 analyzing magnet. Simulations of particle tracking with 3D space charge effect and realistic 3D magnetic fields through the line were performed using particle-in-cell code. The results of the beam dynamics show that such a low energy beam is very sensitive to the space charge effect and significantly suffers from the second-order aberration of the analyzing magnet resulting in large emittance. However, the second-order aberration could be reduced by adding compensating sextupole components in the beam line. On this basis, a new 110 analyzing magnet with relatively larger acceptance and smaller aberration is designed and will be used in the design of low energy beam transport line for a new superconducting ECR ion source SECRAL-II. The features of the analyzer and the corresponding beam trajectory calculation will be detailed and discussed in this paper.

  14. Target Material Irradiation Studies for High-Intensity Accelerator Beams , H. Ludewig1

    E-Print Network [OSTI]

    McDonald, Kirk

    during the useful life of the target. Several studies have been performed in recent years [2, 3] (in on the behavior of special materials and composites under irradiation conditions and their potential use to the response of a carbon-carbon (CC) composite which is specially fabricated to eliminate thermal expansion

  15. The influence of high intensity white noise of free 17-hydroxycorticosteroid levels in dogs

    E-Print Network [OSTI]

    Thalken, Charles Edward

    1970-01-01

    Rhythms in Dogs Dog number Grou I* Grou II 6AM 12AM 6PM 6AM 12AM 6PM HGO 13H 17H 19H 21H 23H HG2 HG4 HG6 HGS 25H HHO 27H HH2 HH4 HH6 t HJO 37H 39H 41H 2. 76 3 ' 40 4. 46 7. 54 2. 42 2. 22 2. 06 2. 76 4. 82 l. 72 4. 82 4. 48... * HGB HHO* 13. 70 2. 92 5. 40 7. 20 3. 82 5. 40 5. 16 6. 75 10. 88 2. 66 2. 22 2. 66 4, 44 3. 10 4, 44 3. 56 10. 74 5. 24 5. 50 5. 76 2. 76 2. 50 2. 24 6. 24 6. 34 1. 00 3. 34 1. 00 3. 00 1. 66 4. 00 2. 32 11. 74 1. 80 1. 84 2. 94 3. 46 1. 80 1. 91...

  16. A New Proposal to the High Intensity Gamma-Ray Source (HIS) PAC-09

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach HomeA Better Anode Design to Improve Lithium-Ion Batteries Print Lithium-ionAAEngineEIA'sANew MethodAA

  17. Response of High-Tc Superconductor Metamaterials to High Intensity THz

    Office of Scientific and Technical Information (OSTI)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefield MunicipalTechnical Report:Speeding access toSmall ReactorRaymond Davis, Jr.,Workshop

  18. A FOURTH ORDER RESONANCE OF A HIGH INTENSITY LINAC (Conference) | SciTech

    Office of Scientific and Technical Information (OSTI)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefield MunicipalTechnicalInformation4563 LLNL Small-scaleCoherent Light SourceAConnect Conference: A

  19. Max Tech and Beyond: High-Intensity Discharge Lamps (Technical Report) |

    Office of Scientific and Technical Information (OSTI)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfate Reducing(JournalspectroscopyReport) | SciTech Connect Mathematical andFluorescentSciTech

  20. Max Tech and Beyond: High-Intensity Discharge Lamps (Technical Report) |

    Office of Scientific and Technical Information (OSTI)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfate Reducing(JournalspectroscopyReport) | SciTech Connect Mathematical

  1. PREDICTION OF 4\nu=1 RESONANCE OF A HIGH INTENSITY LINAC* (Conference) |

    Office of Scientific and Technical Information (OSTI)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfateSciTech ConnectSpeeding access to(Conference) |ofPDVGLENELG IN GALE CRATER ON

  2. PREDICTION OF 4nu=1 RESONANCE OF A HIGH INTENSITY LINAC (Conference) |

    Office of Scientific and Technical Information (OSTI)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfateSciTech ConnectSpeeding access to(Conference) |ofPDVGLENELG IN GALE CRATER ONSciTech

  3. Response of High-Tc Superconductor Metamaterials to High Intensity THz

    Office of Scientific and Technical Information (OSTI)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfateSciTech ConnectSpeedingConnect(Conference)Factory: Linearcuprate| SciTech

  4. Response of High-Tc Superconductor Metamaterials to High Intensity THz

    Office of Scientific and Technical Information (OSTI)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfateSciTech ConnectSpeedingConnect(Conference)Factory: Linearcuprate| SciTechRadiation

  5. Response of High-Tc Superconductor Metamaterials to High Intensity THz

    Office of Scientific and Technical Information (OSTI)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfateSciTech ConnectSpeedingConnect(Conference)Factory: Linearcuprate|

  6. 2014-05-05 Issuance: Test Procedures for High-Intensity Discharge Lamps;

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustmentsShirleyEnergyTher i n c i p a l De p u t y A s s iof1 of 8 2 of 8 3 of 8 4 ofSupplemental Notice

  7. Sixth-Order Resonance of High-Intensity Linear Accelerators (Journal

    Office of Scientific and Technical Information (OSTI)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfateSciTechtail. (Conference)Feedback System in the CERN SPS

  8. The Fermilab Main Injector: high intensity operation and beam loss control

    Office of Scientific and Technical Information (OSTI)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfateSciTechtail. (Conference)FeedbackProperties of Graphene (Journal Article)(Conference)The

  9. The Fermilab Main Injector: high intensity operation and beam loss control

    Office of Scientific and Technical Information (OSTI)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfateSciTechtail. (Conference)FeedbackProperties of Graphene (Journal Article)(Conference)The(Journal

  10. IEEE Power Electronics Specialists Conference, PESC-97, 39-45, St. Louis, 1997. A MHz Electronic Ballast for Automotive-Type HID Lamps

    E-Print Network [OSTI]

    Ballast for Automotive-Type HID Lamps Michael Gulko and Sam Ben-Yaakov* Power Electronics Laboratory lamps designated for automotive headlight applications was investigated theoretically, by simulation and experimentally. The study reveals that a based ballast (CS-PPRI) complies with the automotive requirement of very

  11. High intensity low temperature (HILT) performance of space concentrator GaInP/GaInAs/Ge MJ SCs

    SciTech Connect (OSTI)

    Shvarts, Maxim Z., E-mail: shvarts@scell.ioffe.ru; Kalyuzhnyy, Nikolay A.; Mintairov, Sergey A.; Soluyanov, Andrei A.; Timoshina, Nailya Kh. [Ioffe Physical-Technical Institute, 26 Polytekhnicheskaya str., St.-Petersburg, 194021 (Russian Federation); Gudovskikh, Alexander S. [Saint-Petersburg Academic University - Nanotechnology Research and Education Centre RAS, St. Petersburg, 194021 (Russian Federation); Luque, Antonio [Ioffe Physical-Technical Institute, 26 Polytekhnicheskaya str., St.-Petersburg, 194021, Russia and Instituto de Energia Solar, Universidad Politecnica de Madrid, Madrid (Spain)

    2014-09-26

    In the work, the results of an investigation of GaInP/GaInAs/Ge MJ SCs intended for converting concentrated solar radiation, when operating at low temperatures (down to ?190 C) are presented. A kink of the cell I-V characteristic has been observed in the region close to V{sub oc} starting from ?20C at operation under concentrated sunlight. The causes for its occurrence have been analyzed and the reasons for formation of a built-in potential barrier for majority charge carriers at the n-GaInP/n-Ge isotype hetero-interface are discussed. The effect of charge carrier transport in n-GaInP/n-pGe heterostructures on MJ SC output characteristics at low temperatures has been studied including EL technique.

  12. Production of neutrons up to 18 MeV in high-intensity, short-pulse laser matter interactions

    E-Print Network [OSTI]

    . Plasmas 18, 104506 (2011) Charge resolved electrostatic diagnostic of colliding copper laser plasma plumes the 7 Li(d,xn) nuclear reaction (Q 15 MeV). Radiochromic film and a Thomson parabola ion, such as fusion power plant materials testing,1 contraband detec- tion,2 and fissile material waste disposal,3

  13. THE DESIGN AND FABRICATION OF A LARGE RECTANGULAR MAGNETIC CUSP PLASMA SOURCE FOR HIGH INTENSITY NEUTRAL BEAM INJECTORS

    E-Print Network [OSTI]

    Biagi, L.A.

    2010-01-01

    generator should be replaced with a larger-volume "magnetic bucket" plasma source,-* in which the walls are lined with permanent magnetsgenerator (Fi^. 1). Design and Fabrication Techniq The permanent magnets

  14. Production of Medical Radioisotopes with High Specific Activity in Photonuclear Reactions with $?$ Beams of High Intensity and Large Brilliance

    E-Print Network [OSTI]

    D. Habs; U. Kster

    2010-09-08

    We study the production of radioisotopes for nuclear medicine in $(\\gamma,x{\\rm n}+y{\\rm p})$ photonuclear reactions or ($\\gamma,\\gamma'$) photoexcitation reactions with high flux [($10^{13}-10^{15}$)$\\gamma$/s], small diameter $\\sim (100 \\, \\mu$m$)^2$ and small band width ($\\Delta E/E \\approx 10^{-3}-10^{-4}$) $\\gamma$ beams produced by Compton back-scattering of laser light from relativistic brilliant electron beams. We compare them to (ion,$x$n$ + y$p) reactions with (ion=p,d,$\\alpha$) from particle accelerators like cyclotrons and (n,$\\gamma$) or (n,f) reactions from nuclear reactors. For photonuclear reactions with a narrow $\\gamma$ beam the energy deposition in the target can be managed by using a stack of thin target foils or wires, hence avoiding direct stopping of the Compton and pair electrons (positrons). $(\\gamma,\\gamma')$ isomer production via specially selected $\\gamma$ cascades allows to produce high specific activity in multiple excitations, where no back-pumping of the isomer to the ground state occurs. We discuss in detail many specific radioisotopes for diagnostics and therapy applications. Photonuclear reactions with $\\gamma$ beams allow to produce certain radioisotopes, e.g. $^{47}$Sc, $^{44}$Ti, $^{67}$Cu, $^{103}$Pd, $^{117m}$Sn, $^{169}$Er, $^{195m}$Pt or $^{225}$Ac, with higher specific activity and/or more economically than with classical methods. This will open the way for completely new clinical applications of radioisotopes. For example $^{195m}$Pt could be used to verify the patient's response to chemotherapy with platinum compounds before a complete treatment is performed. Also innovative isotopes like $^{47}$Sc, $^{67}$Cu and $^{225}$Ac could be produced for the first time in sufficient quantities for large-scale application in targeted radionuclide therapy.

  15. Laser-Energy Transfer and Enhancement of Plasma Waves and Electron Beams by Interfering High-Intensity Laser Pulses

    E-Print Network [OSTI]

    Umstadter, Donald

    Laser-Energy Transfer and Enhancement of Plasma Waves and Electron Beams by Interfering High%) and a decreased electron-beam divergence angle (by 45%), as compared with single-pulse illumination. Simulations reveal that increased stochastic heating of electrons may have also contributed to the electron-beam

  16. Fast magnetic field annihilation in the relativistic collisionless regime driven by two ultra-short high-intensity laser pulses

    E-Print Network [OSTI]

    Gu, Y J; Kumar, D; Liu, Y; Singh, S K; Esirkepov, T Zh; Bulanov, S V; Weber, S; Korn, G

    2015-01-01

    The magnetic quadrupole structure formation during the interaction of two ultra-short high power laser pulses with a collisionless plasma is demonstrated with 2.5-dimensional particle-in-cell simulations. The subsequent expansion of the quadrupole is accompanied by magnetic field annihilation in the ultrarelativistic regime, when the magnetic field can not be sustained by the plasma current. This results in a dominant contribution of the displacement current exciting a strong large scale electric?field. This field leads to the conversion of magnetic energy into kinetic energy of accelerated electrons inside the thin current sheet.

  17. Imaging of high-intensity focused ultrasound-induced lesions in soft biological tissue using thermoacoustic tomography

    E-Print Network [OSTI]

    Wang, Lihong

    thermoacoustic tomography Xing Jin, Yuan Xu, and Lihong V. Wanga) Optical Imaging Laboratory, Department December 2004) An imaging technology, thermoacoustic tomograpy (TAT), was applied to the visualization thermoacoustic sources in this tissue sample. The thermoacoustic signals were detected by an unfocused ultrasonic

  18. MeV electrons accelerated backward along laser axis from low energy, high intensity laser-water interactions

    E-Print Network [OSTI]

    Feister, Scott; Morrison, John T; Frische, Kyle D; Orban, Chris; Ngirmang, Gregory; Handler, Abraham; Schillaci, Mark; Chowdhury, Enam A; Freeman, R R; Roquemore, W M

    2015-01-01

    Direct electron spectrum measurements show MeV energy electrons generated backward along the laser axis by a $\\lambda =$ 780 nm, 40 fs, 2.9 mJ short-pulse laser ($1.5 \\cdot 10^{18}$ W/cm$^2$). Electrons pass through a 3 mm hole in the center of the final off-axis paraboloid (OAP) and are characterized by a magnetic spectrometer. The charge collected at the OAP is hundreds of pC per pulse. A mechanism for this super-ponderomotive backward electron acceleration is discussed in the framework of 3D Particle-in-cell simulations.

  19. Submicro and Nano Structured Porous Materials for the Production of High-Intensity Exotic Radioactive Ion Beams

    E-Print Network [OSTI]

    Fernandes, Sandrina; Stora, Thierry

    2010-01-01

    ISOLDE, the CERN Isotope Separator On-line DEvice is a unique source of low energy beams of radioactive isotopes - atomic nuclei that have too many or too few neutrons to be stable. The facility is like a small chemical factory, giving the possibility of changing one element to another, by selecting the atomic mass of the required isotope beam in the mass separator, rather as the alchemists once imagined. It produces a total of more than 1000 different isotopes from helium to radium, with half-lives down to milliseconds, by impinging a 1.4 GeV proton beam from the Proton Synchrotron Booster (PSB) onto special targets, yielding a wide variety of atomic fragments. Different components then extract the nuclei and separate them according to mass. The post-accelerator REX (Radioactive beam EXperiment) at ISOLDE accelerates the radioactive beams up to 3 MeV/u for many experiments. A wide international user radioactive ion beam (RIB) community investigates fundamental aspects of nuclear physics, particle...

  20. Nuclear astrophysics with intense photon beam

    SciTech Connect (OSTI)

    Shizuma, Toshiyuki [Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195 (Japan)

    2012-07-09

    Quasi-monochromatic photon beams generated by inverse Compton scattering of laser light with high energy electrons can be used for precise measurements of photoneutrons and resonant scattered {gamma} rays. Extremely high intensity and small energy spreading width of the photon beam expected at the ELI Nuclear Physics facility would increase the experimental sensitivities considerably. Possible photonuclear reaction measurements relevant to the p-process nucleosynthesis are discussed.

  1. CX-003524: Categorical Exclusion Determination

    Broader source: Energy.gov [DOE]

    Energy Efficient Street Lighting Changeover - Light-Emitting Diode (LED)/High Intensity Discharge (HID)CX(s) Applied: A1, A9, B1.3, B5.1Date: 08/26/2010Location(s): Oak Harbor, OhioOffice(s): Electricity Delivery and Energy Reliability, National Energy Technology Laboratory

  2. Mechanism and computational model for Lyman-{alpha}-radiation generation by high-intensity-laser four-wave mixing in Kr-Ar gas

    SciTech Connect (OSTI)

    Louchev, Oleg A.; Saito, Norihito; Wada, Satoshi; Bakule, Pavel; Yokoyama, Koji; Ishida, Katsuhiko; Iwasaki, Masahiko

    2011-09-15

    We present a theoretical model combined with a computational study of a laser four-wave mixing process under optical discharge in which the non-steady-state four-wave amplitude equations are integrated with the kinetic equations of initial optical discharge and electron avalanche ionization in Kr-Ar gas. The model is validated by earlier experimental data showing strong inhibition of the generation of pulsed, tunable Lyman-{alpha} (Ly-{alpha}) radiation when using sum-difference frequency mixing of 212.6 nm and tunable infrared radiation (820-850 nm). The rigorous computational approach to the problem reveals the possibility and mechanism of strong auto-oscillations in sum-difference resonant Ly-{alpha} generation due to the combined effect of (i) 212.6-nm (2+1)-photon ionization producing initial electrons, followed by (ii) the electron avalanche dominated by 843-nm radiation, and (iii) the final breakdown of the phase matching condition. The model shows that the final efficiency of Ly-{alpha} radiation generation can achieve a value of {approx}5x10{sup -4} which is restricted by the total combined absorption of the fundamental and generated radiation.

  3. Fast Ignition relevant study of the flux of high intensity laser generated electrons via a hollow cone into a laser-imploded plasma

    SciTech Connect (OSTI)

    Key, M; Adam, J; Akli, K; Borgheshi, M; Chen, M; Evans, R; Freeman, R; Hatchett, S; Hill, J; Heron, A; King, J; Lancaster, K; Mackinnon, A; Norreys, P; Phillips, T; Romagnani, L; Snavely, R; Stephens, R; Stoeckl, C

    2005-10-11

    An integrated experiment relevant to fast ignition is described. A Cu doped CD spherical shell target is imploded around an inserted hollow Au cone by a six beam 600J, 1ns laser to a peak density of 4gcm{sup -3} and a diameter of 100 {micro}m. A 10 ps, 20TW laser pulse is focused into the cone at the time of peak compression. The flux of high-energy electrons through the imploded material is determined from the yield of Cu K{alpha} fluorescence by comparison with a Monte Carlo model and is estimated to carry 15% of the laser energy. Collisional and Ohmic heating are modeled. An electron spectrometer shows significantly greater reduction of the transmitted electron flux than is due to binary collisions and Ohmic potential. Enhanced scattering by instability-induced magnetic fields is suggested.

  4. Fast ignition relevant study of the flux of high intensity laser-generated electrons via a hollow cone into a laser-imploded plasma

    SciTech Connect (OSTI)

    Key, M. H.; Chen, M. H.; Hatchett, S. P.; Hill, J. M.; King, J. A.; MacKinnon, A. J.; Patel, P.; Phillips, T.; Snavely, R. A.; Town, R. [University of California, Lawrence Livermore National Laboratory, Livermore, California 94550 (United States); Adam, J. C.; Heron, A. [Centre de Physique Theorique (UPR14 du CNRS), Ecole Polytechnique, 91128 Palaiseau Cedex (France); Akli, K. U.; Stephens, R. [General Atomics, San Diego, California 92186 (United States); Borghesi, M.; Romagnani, L.; Zepf, M. [Department of Pure and Applied Physics, Queens University of Belfast, Belfast BT7 1NN (United Kingdom); Evans, R. G. [Blackett Laboratory, Imperial College of Science Technology and Medicine, London SW7 2BZ (United Kingdom); Freeman, R. R. [The Ohio State University, Columbus, Ohio 34210 (United States); Habara, H. [Rutherford Appleton Laboratory, Chilton, Oxon, OX11OQX (United Kingdom)] (and others)

    2008-02-15

    An integrated experiment relevant to fast ignition . A Cu-doped deuterated polymer spherical shell target with an inserted hollow Au cone is imploded by a six-beam 900-J, 1-ns laser. A 10-ps, 70-J laser pulse is focused into the cone at the time of peak compression. The flux of high-energy electrons through the imploded material is determined from the yield of Cu K{alpha} fluorescence by comparison with a Monte Carlo model. The electrons are estimated to carry about 15% of the laser energy. Collisional and Ohmic heating are modeled, and Ohmic effects are shown to be relatively unimportant. An electron spectrometer shows significantly greater reduction of the transmitted electron flux than is calculated in the model. Enhanced scattering by instability-induced magnetic fields is suggested. An extension of this fluor-based technique to measurement of coupling efficiency to the ignition hot spot in future larger-scale fast ignition experiments is outlined.

  5. Demonstration of Fusion-Evaporation and Direct-Interaction Nuclear Reactions using High-Intensity Laser-Plasma-Accelerated Ion Beams

    E-Print Network [OSTI]

    Strathclyde, University of

    nuclei'' with the subsequent evaporation of proton, neutron, and alpha particles. Results are compared to date have been limited to Thomson parabola ion spectrometers, which generally sample small solid angles that the ion expansion profile in some situations is influenced by self-generated electric and magnetic fields

  6. Fast ignition relevant study of the flux of high intensity laser-generated electrons via a hollow cone into a laser-imploded plasma

    SciTech Connect (OSTI)

    Key, M

    2007-11-20

    An integrated experiment relevant to fast ignition. A Cu-doped deuterated polymer spherical shell target with an inserted hollow Au cone is imploded by a six-beam 900-J, 1-ns laser. A 10-ps, 70-J laser pulse is focused into the cone at the time of peak compression. The flux of high-energy electrons through the imploded material is determined from the yield of Cu K{sub {alpha}} fluorescence by comparison with a Monte Carlo model. The electrons are estimated to carry about 15% of the laser energy. Collisional and Ohmic heating are modeled, and Ohmic effects are shown to be relatively unimportant. An electron spectrometer shows significantly greater reduction of the transmitted electron flux than is calculated in the model. Enhanced scattering by instability-induced magnetic fields is suggested. An extension of this fluor-based technique to measurement of coupling efficiency to the ignition hot spot in future larger-scale fast ignition experiments is outlined.

  7. Simulating the effect of high-intensity sound on cetaceans: Modeling, approach and a case study for Cuvier's beaked whale (Ziphius cavirostris)

    E-Print Network [OSTI]

    Krysl, P; Cranford, T W; Wiggins, S M; Hildebrand, John A

    2006-01-01

    impedance mismatch within this ani- mal. To construct anwith respect to the ani- mal, with an exponential ramp upfactors determined by the ani- mal during a dive cycle. With

  8. Simulating the effect of high-intensity sound on cetaceans: Modeling, approach and a case study for Cuvier's beaked whale (Ziphius cavirostris)

    E-Print Network [OSTI]

    Krysl, P; Cranford, T W; Wiggins, S M; Hildebrand, John A

    2006-01-01

    energy dissipation. The pterygoid sinuses are shown in green,energy dissipation, darker shade corresponds to lower density. The pterygoid sinuses are shown in green,

  9. A versatile source to produce high-intensity, pulsed supersonic radical beams for crossed-beam experiments: The cyanogen radical CN,,X2

    E-Print Network [OSTI]

    Kaiser, Ralf I.

    terrestrial and extraterrestrial environments. Initiated by the solar photolyses of hydrogen cyanide HCN are obtained by monitoring the decay kinetics of the CN radical, these investigations could not provide reac

  10. Lateral Electron Transport in High-Intensity Laser-Irradiated Foils Diagnosed by Ion Emission P. McKenna,1,2,* D. C. Carroll,1

    E-Print Network [OSTI]

    Greenaway, Alan

    of the factors influencing the efficiency of longitudinal energy transport in a laser-irradiated target electric-field generation resulting from electron transport. The measurement of large electric fields (0:1 TV=m) millimeters from the laser focus reveals that lateral energy transport continues long after

  11. ,,,"Incandescent","Standard Fluorescent","Compact Fluorescent","High-Intensity Discharge","Halogen"

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: AlternativeMonthly","10/2015"Monthly","10/2015" ,"Release7 Relative Standard Errors for Table 5.7;" " Unit:8977.8.38.

  12. ,,,"Incandescent","Standard Fluorescent","Compact Fluorescent","High-Intensity Discharge","Halogen"

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: AlternativeMonthly","10/2015"Monthly","10/2015" ,"Release7 Relative Standard Errors for Table 5.7;" "

  13. Title of dissertation: Precision Control of Intense Electron Beams in a Low-Energy Ring

    E-Print Network [OSTI]

    Anlage, Steven

    ABSTRACT Title of dissertation: Precision Control of Intense Electron Beams in a Low-Energy Ring ELECTRON BEAMS IN A LOW-ENERGY RING by Chao Wu Dissertation submitted to the Faculty of the Graduate School of particle accelerators require beams with high intensity and low emittance in a stable fashion. An important

  14. Channeling of intense laser beams in underdense plasmas

    SciTech Connect (OSTI)

    Feit, M.D.; Garrison, J.C.; Rubenchik, A.M.

    1997-09-01

    A hydrodynamic simulation is used to show that intense laser pulses propagating in underdense plasmas create stable, long-lived, and completely evacuated channels. At low intensities, I=10{sup 17} W/cm{sup 2}, self focusing seriously distorts the temporal envelope of the pulse, but channeling still occurs. At high intensities, I=10{sup 19} W/cm{sup 2}, channeling can proceed over many diffraction lengths with significant distortion restricted to the leading edge of the pulse. {copyright} {ital 1997} {ital The American Physical Society}

  15. 5/23/13 EBSCOhost ehis.ebscohost.com.libproxy.mit.edu/ehost/delivery?sid=24f6d6e6-10b5-495d-90c9-221fc19a83fe%40sessionmgr114&vid=7&hid=107 1/2

    E-Print Network [OSTI]

    Deutch, John

    ordered the removal of all nuclear weapons from surface ships and attack submarines. Along-221fc19a83fe%40sessionmgr114&vid=7&hid=107 1/2 Database: Section: Record: 1 Nuclear weapons in the new and White Photograph. Business Source Complete The National Interest NUCLEAR WEAPONS IN THE NEW WORLD ORDER

  16. Nonlinear dynamics of ionization stabilization of atoms in intense laser fields

    E-Print Network [OSTI]

    Michael Norman; C. Chandre; T. Uzer; Peijie Wang

    2014-12-06

    We revisit the stabilization of ionization of atoms subjected to a superintense laser pulse using nonlinear dynamics. We provide an explanation for the lack of complete ionization at high intensity and for the decrease of the ionization probability as intensity is increased. We investigate the role of each part of the laser pulse (ramp-up, plateau, ramp-down) in this process. We emphasize the role of the choice for the ionization criterion, energy versus distance criterion.

  17. Intense Muon Beams for Experiments at Project X

    SciTech Connect (OSTI)

    C.M. Ankenbrandt, R.P. Johnson, C. Y. Yoshikawa, V.S. Kashikhin, D.V. Neuffer, J. Miller, R.A. Rimmer

    2011-03-01

    A coherent approach for providing muon beams to several experiments for the intensity-frontier program at Project X is described. Concepts developed for the front end of a muon collider/neutrino factory facility, such as phase rotation and ionization cooling, are applied, but with significant differences. High-intensity experiments typically require high-duty-factor beams pulsed at a time interval commensurate with the muon lifetime. It is challenging to provide large RF voltages at high duty factor, especially in the presence of intense radiation and strong magnetic fields, which may preclude the use of superconducting RF cavities. As an alternative, cavities made of materials such as ultra-pure Al and Be, which become very good but not super conductors at cryogenic temperatures, can be used.

  18. VOLUME 88, NUMBER 7 P H Y S I C A L R E V I E W L E T T E R S 18 FEBRUARY 2002 Boosting Sonoluminescence with a High-Intensity Ultrasonic Pulse Focused

    E-Print Network [OSTI]

    Forterre, Yol

    was first proposed by Moss et al. [20] in the context of thermonuclear fusion reaction. However, his paper of higher energy or to ignite a nuclear fusion reaction. We present a new experimental approach where fusion reaction. Most of these trials have rapidly reached the boundaries of the narrow stability domain

  19. Building-Level Intensities

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

    . Electricity Consumption and Expenditure Intensities for Non-Mall Buildings, 2003" ,"Electricity Consumption",,,,,,"Electricity Expenditures" ,"per Building (thousand kWh)","per...

  20. Light intensity compressor

    DOE Patents [OSTI]

    Rushford, Michael C. (Livermore, CA)

    1990-01-01

    In a system for recording images having vastly differing light intensities over the face of the image, a light intensity compressor is provided that utilizes the properties of twisted nematic liquid crystals to compress the image intensity. A photoconductor or photodiode material that is responsive to the wavelength of radiation being recorded is placed adjacent a layer of twisted nematic liquid crystal material. An electric potential applied to a pair of electrodes that are disposed outside of the liquid crystal/photoconductor arrangement to provide an electric field in the vicinity of the liquid crystal material. The electrodes are substantially transparent to the form of radiation being recorded. A pair of crossed polarizers are provided on opposite sides of the liquid crystal. The front polarizer linearly polarizes the light, while the back polarizer cooperates with the front polarizer and the liquid crystal material to compress the intensity of a viewed scene. Light incident upon the intensity compressor activates the photoconductor in proportion to the intensity of the light, thereby varying the field applied to the liquid crystal. The increased field causes the liquid crystal to have less of a twisting effect on the incident linearly polarized light, which will cause an increased percentage of the light to be absorbed by the back polarizer. The intensity of an image may be compressed by forming an image on the light intensity compressor.

  1. Generation of Ultra-intense Gamma-ray Train by QED Harmonics

    E-Print Network [OSTI]

    Liu, Chen; Zhang, Xiaomei; Ji, Liangliang; Wang, Wenpeng; Xu, Jiancai; Zhao, Xueyan; Yi, Longqing; Shi, Yin; Zhang, Lingang; Xu, Tongjun; Pei, Zhikun; Xu, Zhizhan

    2015-01-01

    When laser intensity exceeds 10^22W/cm^2, photons with energy above MeV can be generated from high-order harmonics process in the laser-plasma interaction. We find that under such laser intensity, QED effect plays a dominating role in the radiation pattern. Contrast to the gas and relativistic HHG processes, both the occurrence and energy of gamma-ray emission produced by QED harmonics are random and QED harmonics are usually not coherent, while the property of high intensity and ultra-short duration is conserved. Our simulation shows that the period of gamma-ray train is half of the laser period and the peak intensity is 1.4e22W/cm^2. This new harmonic production with QED effects are crucial to light-matter interaction in strong field and can be verified in experiments by 10PW laser facilities in the near future.

  2. Hanford Identification (HID) PIA, Richland Operations Office...

    Energy Savers [EERE]

    Safety Management Workshop Registration, PIA, Idaho National Laboratory Occupational Medicine - Assistant PIA, Idaho National Laboratory Manchester Software 1099 Reporting PIA,...

  3. HID Laboratories Inc | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIXsource History View NewGuam: Energy Resources Jump to:Wind Farm

  4. Stationary self-focusing of intense laser beam in cold quantum plasma using ramp density profile

    SciTech Connect (OSTI)

    Habibi, M.; Ghamari, F.

    2012-10-15

    By using a transient density profile, we have demonstrated stationary self-focusing of an electromagnetic Gaussian beam in cold quantum plasma. The paper is devoted to the prospects of using upward increasing ramp density profile of an inhomogeneous nonlinear medium with quantum effects in self-focusing mechanism of high intense laser beam. We have found that the upward ramp density profile in addition to quantum effects causes much higher oscillation and better focusing of laser beam in cold quantum plasma in comparison to that in the classical relativistic case. Our computational results reveal the importance and influence of formation of electron density profiles in enhancing laser self-focusing.

  5. Efficient electronic structure calculation for molecular ionization dynamics at high x-ray intensity

    E-Print Network [OSTI]

    Hao, Yajiang; Hanasaki, Kota; Son, Sang-Kil; Santra, Robin

    2015-01-01

    We present the implementation of an electronic-structure approach dedicated to ionization dynamics of molecules interacting with x-ray free-electron laser (XFEL) pulses. In our scheme, molecular orbitals for molecular core-hole states are represented by linear combination of numerical atomic orbitals that are solutions of corresponding atomic core-hole states. We demonstrate that our scheme efficiently calculates all possible multiple-hole configurations of molecules formed during XFEL pulses. The present method is suitable to investigate x-ray multiphoton multiple ionization dynamics and accompanying nuclear dynamics, providing essential information on the chemical dynamics relevant for high-intensity x-ray imaging.

  6. Energy Intensity Strategy

    E-Print Network [OSTI]

    Rappolee, D.; Shaw, J.

    2008-01-01

    Our presentation will cover how we began the journey of conserving energy at our facility. Well discuss a basic layout of our energy intensity plan and the impact our team has had on the process, what tools were using, what goals have been...

  7. The interaction of intense subpicosecond laser pulses with underdense plasmas

    SciTech Connect (OSTI)

    Coverdale, C.A.

    1995-05-11

    Laser-plasma interactions have been of interest for many years not only from a basic physics standpoint, but also for their relevance to numerous applications. Advances in laser technology in recent years have resulted in compact laser systems capable of generating (psec), 10{sup 16} W/cm{sup 2} laser pulses. These lasers have provided a new regime in which to study laser-plasma interactions, a regime characterized by L{sub plasma} {ge} 2L{sub Rayleigh} > c{tau}. The goal of this dissertation is to experimentally characterize the interaction of a short pulse, high intensity laser with an underdense plasma (n{sub o} {le} 0.05n{sub cr}). Specifically, the parametric instability known as stimulated Raman scatter (SRS) is investigated to determine its behavior when driven by a short, intense laser pulse. Both the forward Raman scatter instability and backscattered Raman instability are studied. The coupled partial differential equations which describe the growth of SRS are reviewed and solved for typical experimental laser and plasma parameters. This solution shows the growth of the waves (electron plasma and scattered light) generated via stimulated Raman scatter. The dispersion relation is also derived and solved for experimentally accessible parameters. The solution of the dispersion relation is used to predict where (in k-space) and at what frequency (in {omega}-space) the instability will grow. Both the nonrelativistic and relativistic regimes of the instability are considered.

  8. French intensive truck garden

    SciTech Connect (OSTI)

    Edwards, T D

    1983-01-01

    The French Intensive approach to truck gardening has the potential to provide substantially higher yields and lower per acre costs than do conventional farming techniques. It was the intent of this grant to show that there is the potential to accomplish the gains that the French Intensive method has to offer. It is obvious that locally grown food can greatly reduce transportation energy costs but when there is the consideration of higher efficiencies there will also be energy cost reductions due to lower fertilizer and pesticide useage. As with any farming technique, there is a substantial time interval for complete soil recovery after there have been made substantial soil modifications. There were major crop improvements even though there was such a short time since the soil had been greatly disturbed. It was also the intent of this grant to accomplish two other major objectives: first, the garden was managed under organic techniques which meant that there were no chemical fertilizers or synthetic pesticides to be used. Second, the garden was constructed so that a handicapped person in a wheelchair could manage and have a higher degree of self sufficiency with the garden. As an overall result, I would say that the garden has taken the first step of success and each year should become better.

  9. Hole boring in a DT pellet and fast ion ignition with ultra-intense laser pulses

    E-Print Network [OSTI]

    Naumova, N; Tikhonchuk, V T; Labaune, C; Sokolov, I V; Mourou, G; 10.1103/PhysRevLett.102.025002

    2009-01-01

    Recently achieved high intensities of short laser pulses open new prospects in their application to hole boring in inhomogeneous overdense plasmas and for ignition in precompressed DT fusion targets. A simple analytical model and numerical simulations demonstrate that pulses with intensities exceeding 1022 W/cm2 may penetrate deeply into the plasma as a result of efficient ponderomotive acceleration of ions in the forward direction. The penetration depth as big as hundreds of microns depends on the laser fluence, which has to exceed a few tens of GJ/cm2. The fast ions, accelerated at the bottom of the channel with an efficiency of more than 20%, show a high directionality and may heat the precompressed target core to fusion conditions.

  10. Intensity Frontier Instrumentation

    SciTech Connect (OSTI)

    Kettell S.; Rameika, R.; Tshirhart, B.

    2013-09-24

    The fundamental origin of flavor in the Standard Model (SM) remains a mystery. Despite the roughly eighty years since Rabi asked Who ordered that? upon learning of the discovery of the muon, we have not understood the reason that there are three generations or, more recently, why the quark and neutrino mixing matrices and masses are so different. The solution to the flavor problem would give profound insights into physics beyond the Standard Model (BSM) and tell us about the couplings and the mass scale at which the next level of insight can be found. The SM fails to explain all observed phenomena: new interactions and yet unseen particles must exist. They may manifest themselves by causing SM reactions to differ from often very precise predictions. The Intensity Frontier (1) explores these fundamental questions by searching for new physics in extremely rare processes or those forbidden in the SM. This often requires massive and/or extremely finely tuned detectors.

  11. A proposal to extend the intensity frontier of nuclear and particle physics to 45 GeV (LAMPF 2)

    SciTech Connect (OSTI)

    Not Available

    1984-12-01

    It is proposed to construct and operate a high-intensity, medium energy synchrotron addition to the Clinton P. Anderson Meson Physics Facility. The addition is to consist of a 6-GeV, 170-..mu..A booster and a 45-GeV, 34-..mu..A, 3-Hz main synchrotron with 50% duty factor. The physics of strong and electroweak interactions to be studied at the facility is discussed, as well as accelerator design, scope of experimental area facilities, and cost estimates and schedule. (LEW)

  12. Accelerators for Intensity Frontier Research

    SciTech Connect (OSTI)

    Derwent, Paul; /Fermilab

    2012-05-11

    In 2008, the Particle Physics Project Prioritization Panel identified three frontiers for research in high energy physics, the Energy Frontier, the Intensity Frontier, and the Cosmic Frontier. In this paper, I will describe how Fermilab is configuring and upgrading the accelerator complex, prior to the development of Project X, in support of the Intensity Frontier.

  13. Gamma radiation field intensity meter

    DOE Patents [OSTI]

    Thacker, L.H.

    1995-10-17

    A gamma radiation intensity meter measures dose rate of a radiation field. The gamma radiation intensity meter includes a tritium battery emitting beta rays generating a current which is essentially constant. Dose rate is correlated to an amount of movement of an electroscope element charged by the tritium battery. Ionizing radiation decreases the voltage at the element and causes movement. A bleed resistor is coupled between the electroscope support element or electrode and the ionization chamber wall electrode. 4 figs.

  14. Gamma radiation field intensity meter

    DOE Patents [OSTI]

    Thacker, L.H.

    1994-08-16

    A gamma radiation intensity meter measures dose rate of a radiation field. The gamma radiation intensity meter includes a tritium battery emitting beta rays generating a current which is essentially constant. Dose rate is correlated to an amount of movement of an electroscope element charged by the tritium battery. Ionizing radiation decreases the voltage at the element and causes movement. A bleed resistor is coupled between the electroscope support element or electrode and the ionization chamber wall electrode. 4 figs.

  15. Gamma radiation field intensity meter

    DOE Patents [OSTI]

    Thacker, Louis H. (Knoxville, TN)

    1995-01-01

    A gamma radiation intensity meter measures dose rate of a radiation field. The gamma radiation intensity meter includes a tritium battery emitting beta rays generating a current which is essentially constant. Dose rate is correlated to an amount of movement of an electroscope element charged by the tritium battery. Ionizing radiation decreases the voltage at the element and causes movement. A bleed resistor is coupled between the electroscope support element or electrode and the ionization chamber wall electrode.

  16. Gamma radiation field intensity meter

    DOE Patents [OSTI]

    Thacker, Louis H. (Knoxville, TN)

    1994-01-01

    A gamma radiation intensity meter measures dose rate of a radiation field. The gamma radiation intensity meter includes a tritium battery emitting beta rays generating a current which is essentially constant. Dose rate is correlated to an amount of movement of an electroscope element charged by the tritium battery. Ionizing radiation decreases the voltage at the element and causes movement. A bleed resistor is coupled between the electroscope support element or electrode and the ionization chamber wall electrode.

  17. Nonlinear photoresponse of field effect transistors terahertz detectors at high irradiation intensities

    SciTech Connect (OSTI)

    But, D. B.; Drexler, C.; Ganichev, S. D.; Sakhno, M. V.; Sizov, F. F.; Dyakonova, N.; Drachenko, O.; Gutin, A.; Knap, W.

    2014-04-28

    Terahertz power dependence of the photoresponse of field effect transistors, operating at frequencies from 0.1 to 3 THz for incident radiation power density up to 100?kW/cm{sup 2} was studied for Si metaloxidesemiconductor field-effect transistors and InGaAs high electron mobility transistors. The photoresponse increased linearly with increasing radiation intensity up to the kW/cm{sup 2} range. Nonlinearity followed by saturation of the photoresponse was observed for all investigated field effect transistors for intensities above several kW/cm{sup 2}. The observed photoresponse nonlinearity is explained by nonlinearity and saturation of the transistor channel current. A theoretical model of terahertz field effect transistor photoresponse at high intensity was developed. The model explains quantitative experimental data both in linear and nonlinear regions. Our results show that dynamic range of field effect transistors is very high and can extend over more than six orders of magnitudes of power densities (from ?0.5 mW/cm{sup 2} to ?5?kW/cm{sup 2})

  18. 5.5-7.5 MeV Proton Generation by a Moderate-Intensity Ultrashort-Pulse Laser Interaction with H{sub 2}O Nanowire Targets

    SciTech Connect (OSTI)

    Zigler, A.; Palchan, T.; Bruner, N.; Schleifer, E.; Eisenmann, S.; Botton, M.; Henis, Z. [Racah Institute of Physics, Hebrew University, Jerusalem 91904 (Israel); Pikuz, S. A.; Faenov, A. Y. Jr. [Joint Institute for High Temperatures, Russian Academy of Sciences, Moscow (Russian Federation); Gordon, D.; Sprangle, P. [Plasma Physics Division, Naval Research Laboratory, Washington, D.C. 20375 (United States)

    2011-04-01

    We report on the first generation of 5.5-7.5 MeV protons by a moderate-intensity short-pulse laser ({approx}5x10{sup 17} W/cm{sup 2}, 40 fsec) interacting with frozen H{sub 2}O nanometer-size structure droplets (snow nanowires) deposited on a sapphire substrate. In this setup, the laser intensity is locally enhanced by the snow nanowire, leading to high spatial gradients. Accordingly, the nanoplasma is subject to enhanced ponderomotive potential, and confined charge separation is obtained. Electrostatic fields of extremely high intensities are produced over the short scale length, and protons are accelerated to MeV-level energies.

  19. Neutrino physics with an intense \

    E-Print Network [OSTI]

    R. Henning

    2010-11-16

    We study some of the physics potential of an intense $1\\,\\mathrm{MCi}$ $^{51}\\mathrm{Cr}$ source combined with the {\\sc Majorana Demonstrator} enriched germanium detector array. The {\\sc Demonstrator} will consist of detectors with ultra-low radioactive backgrounds and extremely low energy thresholds of~$\\sim 400\\,\\mathrm{eV}$. We show that it can improve the current limit on the neutrino magnetic dipole moment. We briefly discuss physics applications of the charged-current reaction of the $^{51}\\mathrm{Cr} neutrino with the $^{73}\\mathrm{Ge} isotope. Finally, we argue that the rate from a realistic, intense tritium source is below the detectable limit of even a tonne-scale HPGe experiment

  20. Becky Hill ABI 3130xl Validation Applied Biosystems HID University/

    E-Print Network [OSTI]

    Technology Research programs in SNPs, miniSTRs, Y-STRs, mtDNA, qPCR Assay and software development Experiments Performed at NIST Becky Hill ABI Seminar Series Future Trends in Forensic DNA Technology

  1. RAPID/Roadmap/14-HI-d | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page onRAPID/Geothermal/Exploration/Colorado <RAPID/Geothermal/Water Use/Nevadaa < RAPID‎ | RoadmapCO-c <FD-c <ad

  2. RAPID/Roadmap/18-HI-d | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION JEnvironmental Jump to:EA EIS Report UrlNM-b < RAPID‎ | Roadmap JumpNV-ad-MT-da <b <d

  3. RAPID/Roadmap/3-HI-d | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION JEnvironmental Jump to:EA EIS Report UrlNM-b < RAPID‎ | RoadmapAK-a <CA-a <

  4. RAPID/Roadmap/6-HI-d | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION JEnvironmental Jump to:EA EIS Report UrlNM-b < RAPID‎ | RoadmapAK-ab < RAPID‎ |c <d

  5. Hanford Identification (HID) PIA, Richland Operations Office | Department

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE: Alternative Fuelsof Energy ServicesContracting OversightEMS Policy HQ EMS Policy

  6. Experimental transport of intensity diffraction tomography

    E-Print Network [OSTI]

    Lee, Justin Wu

    2011-01-01

    In this thesis, I perform intensity-based tomographic phase imaging in two ways. First, I utilize the paraxial transport of intensity equation (TIE) to construct phase maps of a phase object at multiple projection angles ...

  7. Control Intensive Planning Planet 2003 Summer School

    E-Print Network [OSTI]

    Bacchus, Fahiem

    in efficiency. Why not utilize that knowledge! Control Intensive Planning/F. Bacchus p.2/131 #12;Goals Control Intensive planning involves finding ways to build and utilize richer domain models so as to support more utilize Forward Chaining. B C A C C A B A B pickup(A) unstack(B) Control Intensive Planning/F. Bacchus p

  8. HI intensity mapping with FAST

    E-Print Network [OSTI]

    Bigot-Sazy, Marie-Anne; Battye, Richard A; Browne, Ian W A; Chen, Tianyue; Dickinson, Clive; Harper, Stuart; Maffei, Bruno; Olivari, Lucas C; Wilkinson, Peter N

    2015-01-01

    We discuss the detectability of large-scale HI intensity fluctuations using the FAST telescope. We present forecasts for the accuracy of measuring the Baryonic Acoustic Oscillations and constraining the properties of dark energy. The FAST $19$-beam L-band receivers ($1.05$--$1.45$ GHz) can provide constraints on the matter power spectrum and dark energy equation of state parameters ($w_{0},w_{a}$) that are comparable to the BINGO and CHIME experiments. For one year of integration time we find that the optimal survey area is $6000\\,{\\rm deg}^2$. However, observing with larger frequency coverage at higher redshift ($0.95$--$1.35$ GHz) improves the projected errorbars on the HI power spectrum by more than $2~\\sigma$ confidence level. The combined constraints from FAST, CHIME, BINGO and Planck CMB observations can provide reliable, stringent constraints on the dark energy equation of state.

  9. Beam intensity upgrade at Fermilab

    SciTech Connect (OSTI)

    Marchionni, A.; /Fermilab

    2006-07-01

    The performance of the Fermilab proton accelerator complex is reviewed. The coming into operation of the NuMI neutrino line and the implementation of slip-stacking to increase the anti-proton production rate has pushed the total beam intensity in the Main Injector up to {approx} 3 x 10{sup 13} protons/pulse. A maximum beam power of 270 kW has been delivered on the NuMI target during the first year of operation. A plan is in place to increase it to 350 kW, in parallel with the operation of the Collider program. As more machines of the Fermilab complex become available with the termination of the Collider operation, a set of upgrades are being planned to reach first 700 kW and then 1.2 MW by reducing the Main Injector cycle time and by implementing proton stacking.

  10. System for obtaining smooth laser beams where intensity variations are reduced by spectral dispersion of the laser light (SSD)

    DOE Patents [OSTI]

    Skupsky, S.; Kessler, T.J.; Short, R.W.; Craxton, S.; Letzring, S.A.; Soures, J.

    1991-09-10

    In an SSD (smoothing by spectral dispersion) system which reduces the time-averaged spatial variations in intensity of the laser light to provide uniform illumination of a laser fusion target, an electro-optic phase modulator through which a laser beam passes produces a broadband output beam by imposing a frequency modulated bandwidth on the laser beam. A grating provides spatial and angular spectral dispersion of the beam. Due to the phase modulation, the frequencies (''colors'') cycle across the beam. The dispersed beam may be amplified and frequency converted (e.g., tripled) in a plurality of beam lines. A distributed phase plate (DPP) in each line is irradiated by the spectrally dispersed beam and the beam is focused on the target where a smooth (uniform intensity) pattern is produced. The color cycling enhances smoothing and the use of a frequency modulated laser pulse prevents the formation of high intensity spikes which could damage the laser medium in the power amplifiers. 8 figures.

  11. Energy Intensity Baselining and Tracking Guidance

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

    betterbuildings.energy.gov Energy Intensity Baselining and Tracking Guidance i Preface The U.S. Department of Energy's (DOE's) Better Buildings, Better Plants Program (Better...

  12. Energy Intensity Indicators: Terminology and Definitions

    Office of Energy Efficiency and Renewable Energy (EERE)

    The Energy Intensity Indicators website uses the following terms with their associated definitions. The terms related to various definitions of energy are discussed first.

  13. Fundamental Physics at the Intensity Frontier

    E-Print Network [OSTI]

    J. L. Hewett; H. Weerts; R. Brock; J. N. Butler; B. C. K. Casey; J. Collar; A. de Gouvea; R. Essig; Y. Grossman; W. Haxton; J. A. Jaros; C. K. Jung; Z. T. Lu; K. Pitts; Z. Ligeti; J. R. Patterson; M. Ramsey-Musolf; J. L. Ritchie; A. Roodman; K. Scholberg; C. E. M. Wagner; G. P. Zeller; S. Aefsky; A. Afanasev; K. Agashe; C. Albright; J. Alonso; C. Ankenbrandt; M. Aoki; C. A. Arguelles; N. Arkani-Hamed; J. R. Armendariz; C. Armendariz-Picon; E. Arrieta Diaz; J. Asaadi; D. M. Asner; K. S. Babu; K. Bailey; O. Baker; B. Balantekin; B. Baller; M. Bass; B. Batell; J. Beacham; J. Behr; N. Berger; M. Bergevin; E. Berman; R. Bernstein; A. J. Bevan; M. Bishai; M. Blanke; S. Blessing; A. Blondel; T. Blum; G. Bock; A. Bodek; G. Bonvicini; F. Bossi; J. Boyce; R. Breedon; M. Breidenbach; S. J. Brice; R. A. Briere; S. Brodsky; C. Bromberg; A. Bross; T. E. Browder; D. A. Bryman; M. Buckley; R. Burnstein; E. Caden; P. Campana; R. Carlini; G. Carosi; C. Castromonte; R. Cenci; I. Chakaberia; M. C. Chen; C. H. Cheng; B. Choudhary; N. H. Christ; E. Christensen; M. E. Christy; T. E. Chupp; E. Church; D. B. Cline; T. E. Coan; P. Coloma; J. Comfort; L. Coney; J. Cooper; R. J. Cooper; R. Cowan; D. F. Cowen; D. Cronin-Hennessy; A. Datta; G. S. Davies; M. Demarteau; D. P. DeMille; A. Denig; R. Dermisek; A. Deshpande; M. S. Dewey; R. Dharmapalan; J. Dhooghe; M. R. Dietrich; M. Diwan; Z. Djurcic; S. Dobbs; M. Duraisamy; B. Dutta; H. Duyang; D. A. Dwyer; M. Eads; B. Echenard; S. R. Elliott; C. Escobar; J. Fajans; S. Farooq; C. Faroughy; J. E. Fast; B. Feinberg; J. Felde; G. Feldman; P. Fierlinger; P. Fileviez Perez; B. Filippone; P. Fisher; B. T. Flemming; K. T. Flood; R. Forty; M. J. Frank; A. Freyberger; A. Friedland; R. Gandhi; K. S. Ganezer; A. Garcia; F. G. Garcia; S. Gardner; L. Garrison; A. Gasparian; S. Geer; V. M. Gehman; T. Gershon; M. Gilchriese; C. Ginsberg; I. Gogoladze; M. Gonderinger; M. Goodman; H. Gould; M. Graham; P. W. Graham; R. Gran; J. Grange; G. Gratta; J. P. Green; H. Greenlee; R. C. Group; E. Guardincerri; V. Gudkov; R. Guenette; A. Haas; A. Hahn; T. Han; T. Handler; J. C. Hardy; R. Harnik; D. A. Harris; F. A. Harris; P. G. Harris; J. Hartnett; B. He; B. R. Heckel; K. M. Heeger; S. Henderson; D. Hertzog; R. Hill; E. A Hinds; D. G. Hitlin; R. J. Holt; N. Holtkamp; G. Horton-Smith; P. Huber; W. Huelsnitz; J. Imber; I. Irastorza; J. Jaeckel; I. Jaegle; C. James; A. Jawahery; D. Jensen; C. P. Jessop; B. Jones; H. Jostlein; T. Junk; A. L. Kagan; M. Kalita; Y. Kamyshkov; D. M. Kaplan; G. Karagiorgi; A. Karle; T. Katori; B. Kayser; R. Kephart; S. Kettell; Y. K. Kim; M. Kirby; K. Kirch; J. Klein; J. Kneller; A. Kobach; M. Kohl; J. Kopp; M. Kordosky; W. Korsch; I. Kourbanis; A. D. Krisch; P. Krizan; A. S. Kronfeld; S. Kulkarni; K. S. Kumar; Y. Kuno; T. Kutter; T. Lachenmaier; M. Lamm; J. Lancaster; M. Lancaster; C. Lane; K. Lang; P. Langacker; S. Lazarevic; T. Le; K. Lee; K. T. Lesko; Y. Li; M. Lindgren; A. Lindner; J. Link; D. Lissauer; L. S. Littenberg; B. Littlejohn; C. Y. Liu; W. Loinaz; W. Lorenzon; W. C. Louis; J. Lozier; L. Ludovici; L. Lueking; C. Lunardini; D. B. MacFarlane; P. A. N. Machado; P. B. Mackenzie; J. Maloney; W. J. Marciano; W. Marsh; M. Marshak; J. W. Martin; C. Mauger; K. S. McFarland; C. McGrew; G. McLaughlin; D. McKeen; R. McKeown; B. T. Meadows; R. Mehdiyev; D. Melconian; H. Merkel; M. Messier; J. P. Miller; G. Mills; U. K. Minamisono; S. R. Mishra; I. Mocioiu; S. Moed Sher; R. N. Mohapatra; B. Monreal; C. D. Moore; J. G. Morfin; J. Mousseau; L. A. Moustakas; G. Mueller; P. Mueller; M. Muether; H. P. Mumm; C. Munger; H. Murayama; P. Nath; O. Naviliat-Cuncin; J. K. Nelson; D. Neuffer; J. S. Nico; A. Norman; D. Nygren; Y. Obayashi; T. P. O'Connor; Y. Okada; J. Olsen; L. Orozco; J. L. Orrell; J. Osta; B. Pahlka; J. Paley; V. Papadimitriou; M. Papucci; S. Parke; R. H. Parker; Z. Parsa; K. Partyka; A. Patch; J. C. Pati; R. B. Patterson; Z. Pavlovic; G. Paz; G. N. Perdue; D. Perevalov; G. Perez; R. Petti; W. Pettus; A. Piepke; M. Pivovaroff; R. Plunkett; C. C. Polly; M. Pospelov; R. Povey; A. Prakesh; M. V. Purohit; S. Raby; J. L. Raaf; R. Rajendran; S. Rajendran; G. Rameika; R. Ramsey; A. Rashed; B. N. Ratcliff; B. Rebel; J. Redondo; P. Reimer; D. Reitzner; F. Ringer; A. Ringwald; S. Riordan; B. L. Roberts; D. A. Roberts; R. Robertson; F. Robicheaux; M. Rominsky; R. Roser; J. L. Rosner; C. Rott; P. Rubin; N. Saito; M. Sanchez; S. Sarkar; H. Schellman; B. Schmidt; M. Schmitt; D. W. Schmitz; J. Schneps; A. Schopper; P. Schuster; A. J. Schwartz; M. Schwarz; J. Seeman; Y. K. Semertzidis; K. K. Seth; Q. Shafi; P. Shanahan; R. Sharma; S. R. Sharpe; M. Shiozawa; V. Shiltsev; K. Sigurdson; P. Sikivie; J. Singh; D. Sivers; T. Skwarnicki; N. Smith; J. Sobczyk; H. Sobel; M. Soderberg; Y. H. Song; A. Soni; P. Souder; A. Sousa; J. Spitz; M. Stancari; G. C. Stavenga; J. H. Steffen

    2012-05-11

    The Proceedings of the 2011 workshop on Fundamental Physics at the Intensity Frontier. Science opportunities at the intensity frontier are identified and described in the areas of heavy quarks, charged leptons, neutrinos, proton decay, new light weakly-coupled particles, and nucleons, nuclei, and atoms.

  14. Fundamental Physics at the Intensity Frontier

    E-Print Network [OSTI]

    Hewett, J L; Brock, R; Butler, J N; Casey, B C K; Collar, J; de Gouvea, A; Essig, R; Grossman, Y; Haxton, W; Jaros, J A; Jung, C K; Lu, Z T; Pitts, K; Ligeti, Z; Patterson, J R; Ramsey-Musolf, M; Ritchie, J L; Roodman, A; Scholberg, K; Wagner, C E M; Zeller, G P; Aefsky, S; Afanasev, A; Agashe, K; Albright, C; Alonso, J; Ankenbrandt, C; Aoki, M; Arguelles, C A; Arkani-Hamed, N; Armendariz, J R; Armendariz-Picon, C; Diaz, E Arrieta; Asaadi, J; Asner, D M; Babu, K S; Bailey, K; Baker, O; Balantekin, B; Baller, B; Bass, M; Batell, B; Beacham, J; Behr, J; Berger, N; Bergevin, M; Berman, E; Bernstein, R; Bevan, A J; Bishai, M; Blanke, M; Blessing, S; Blondel, A; Blum, T; Bock, G; Bodek, A; Bonvicini, G; Bossi, F; Boyce, J; Breedon, R; Breidenbach, M; Brice, S J; Briere, R A; Brodsky, S; Bromberg, C; Bross, A; Browder, T E; Bryman, D A; Buckley, M; Burnstein, R; Caden, E; Campana, P; Carlini, R; Carosi, G; Castromonte, C; Cenci, R; Chakaberia, I; Chen, M C; Cheng, C H; Choudhary, B; Christ, N H; Christensen, E; Christy, M E; Chupp, T E; Church, E; Cline, D B; Coan, T E; Coloma, P; Comfort, J; Coney, L; Cooper, J; Cooper, R J; Cowan, R; Cowen, D F; Cronin-Hennessy, D; Datta, A; Davies, G S; Demarteau, M; DeMille, D P; Denig, A; Dermisek, R; Deshpande, A; Dewey, M S; Dharmapalan, R; Dhooghe, J; Dietrich, M R; Diwan, M; Djurcic, Z; Dobbs, S; Duraisamy, M; Dutta, B; Duyang, H; Dwyer, D A; Eads, M; Echenard, B; Elliott, S R; Escobar, C; Fajans, J; Farooq, S; Faroughy, C; Fast, J E; Feinberg, B; Felde, J; Feldman, G; Fierlinger, P; Perez, P Fileviez; Filippone, B; Fisher, P; Flemming, B T; Flood, K T; Forty, R; Frank, M J; Freyberger, A; Friedland, A; Gandhi, R; Ganezer, K S; Garcia, A; Garcia, F G; Gardner, S; Garrison, L; Gasparian, A; Geer, S; Gehman, V M; Gershon, T; Gilchriese, M; Ginsberg, C; Gogoladze, I; Gonderinger, M; Goodman, M; Gould, H; Graham, M; Graham, P W; Gran, R; Grange, J; Gratta, G; Green, J P; Greenlee, H; Guardincerri, E; Gudkov, V; Guenette, R; Haas, A; Hahn, A; Han, T; Handler, T; Hardy, J C; Harnik, R; Harris, D A; Harris, F A; Harris, P G; Hartnett, J; He, B; Heckel, B R; Heeger, K M; Henderson, S; Hertzog, D; Hill, R; Hinds, E A; Hitlin, D G; Holt, R J; Holtkamp, N; Horton-Smith, G; Huber, P; Huelsnitz, W; Imber, J; Irastorza, I; Jaeckel, J; Jaegle, I; James, C; Jawahery, A; Jensen, D; Jessop, C P; Jones, B; Jostlein, H; Junk, T; Kagan, A L; Kalita, M; Kamyshkov, Y; Kaplan, D M; Karagiorgi, G; Karle, A; Katori, T; Kayser, B; Kephart, R; Kettell, S; Kim, Y K; Kirby, M; Kirch, K; Klein, J; Kneller, J; Kobach, A; Kohl, M; Kopp, J; Kordosky, M; Korsch, W; Kourbanis, I; Krisch, A D; Krizan, P; Kronfeld, A S; Kulkarni, S; Kumar, K S; Kuno, Y; Kutter, T; Lachenmaier, T; Lamm, M; Lancaster, J; Lancaster, M; Lane, C; Lang, K; Langacker, P; Lazarevic, S; Le, T; Lee, K; Lesko, K T; Li, Y; Lindgren, M; Lindner, A; Link, J; Lissauer, D; Littenberg, L S; Littlejohn, B; Liu, C Y; Loinaz, W; Lorenzon, W; Louis, W C; Lozier, J; Ludovici, L; Lueking, L; Lunardini, C; MacFarlane, D B; Machado, P A N; Mackenzie, P B; Maloney, J; Marciano, W J; Marsh, W; Marshak, M; Martin, J W; Mauger, C; McFarland, K S; McGrew, C; McLaughlin, G; McKeen, D; McKeown, R; Meadows, B T; Mehdiyev, R; Melconian, D; Merkel, H; Messier, M; Miller, J P; Mills, G; Minamisono, U K; Mishra, S R; Mocioiu, I; Sher, S Moed; Mohapatra, R N; Monreal, B; Moore, C D; Morfin, J G; Mousseau, J; Moustakas, L A; Mueller, G; Mueller, P; Muether, M; Mumm, H P; Munger, C; Murayama, H; Nath, P; Naviliat-Cuncin, O; Nelson, J K; Neuffer, D; Nico, J S; Norman, A; Nygren, D; Obayashi, Y; O'Connor, T P; Okada, Y; Olsen, J; Orozco, L; Orrell, J L; Osta, J; Pahlka, B; Paley, J; Papadimitriou, V; Papucci, M; Parke, S; Parker, R H; Parsa, Z; Partyka, K; Patch, A; Pati, J C; Patterson, R B; Pavlovic, Z; Paz, G; Perdue, G N; Perevalov, D; Perez, G; Petti, R; Pettus, W; Piepke, A; Pivovaroff, M; Plunkett, R; Polly, C C; Pospelov, M; Povey, R; Prakesh, A; Purohit, M V; Raby, S; Raaf, J L; Rajendran, R; Rajendran, S; Rameika, G; Ramsey, R; Rashed, A; Ratcliff, B N; Rebel, B; Redondo, J; Reimer, P; Reitzner, D; Ringer, F; Ringwald, A; Riordan, S; Roberts, B L; Roberts, D A; Robertson, R; Robicheaux, F; Rominsky, M; Roser, R; Rosner, J L; Rott, C; Rubin, P; Saito, N; Sanchez, M; Sarkar, S; Schellman, H; Schmidt, B; Schmitt, M; Schmitz, D W; Schneps, J; Schopper, A; Schuster, P; Schwartz, A J; Schwarz, M; Seeman, J; Semertzidis, Y K; Seth, K K; Shafi, Q; Shanahan, P; Sharma, R; Sharpe, S R; Shiozawa, M; Shiltsev, V; Sigurdson, K; Sikivie, P; Singh, J; Sivers, D; Skwarnicki, T; Smith, N; Sobczyk, J; Sobel, H; Soderberg, M; Song, Y H; Soni, A; Souder, P; Sousa, A; Spitz, J; Stancari, M; Stavenga, G C; Steffen, J H; Stepanyan, S; Stoeckinger, D; Stone, S; Strait, J; Strassler, M; Sulai, I A; Sundrum, R; Svoboda, R; Szczerbinska, B; Szelc, A; Takeuchi, T; Tanedo, P

    2012-01-01

    The Proceedings of the 2011 workshop on Fundamental Physics at the Intensity Frontier. Science opportunities at the intensity frontier are identified and described in the areas of heavy quarks, charged leptons, neutrinos, proton decay, new light weakly-coupled particles, and nucleons, nuclei, and atoms.

  15. Service Assessment Intense Space Weather Storms

    E-Print Network [OSTI]

    Schrijver, Karel

    Service Assessment Intense Space Weather Storms October 19 November 07, 2003 U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Weather Service Silver Spring, Maryland image. #12;Service Assessment Intense Space Weather Storms October 19 November 07, 2003 April 2004 U

  16. Modeling Data-Intensive Web Sites 259 ModelingData-Intensive

    E-Print Network [OSTI]

    Modeling Data-Intensive Web Sites 259 ChapterXII ModelingData-Intensive Web Sites-by-stepapproachtothedesign,implementation and management of a Data-Intensive Web Site (DIWS). The approach introduces five data formulation is that of "Web fragments," that is an information decomposition technique that aids design, implementation

  17. Simulations and experiments of intense ion beam compression in space and time.

    SciTech Connect (OSTI)

    Yu, S. S. (Lawrence Berkeley National Laboratory, Berkeley, CA); Seidl, P. A. (Lawrence Berkeley National Laboratory, Berkeley, CA); Roy, P. K. (Lawrence Berkeley National Laboratory, Berkeley, CA); Lidia, S. M. (Lawrence Berkeley National Laboratory, Berkeley, CA); Coleman, J. E. (Lawrence Berkeley National Laboratory, Berkeley, CA); Kaganovich, I. D. (Princeton Plasma Physics Laboratory, Princeton, NJ); Gilson, E. P. (Princeton Plasma Physics Laboratory, Princeton, NJ); Welch, Dale Robert; Sefkow, Adam B.; Davidson, R. C. (Princeton Plasma Physics Laboratory, Princeton, NJ)

    2008-12-01

    The Heavy Ion Fusion Science Virtual National Laboratory has achieved 60-fold longitudinal pulse compression of ion beams on the Neutralized Drift Compression Experiment (NDCX) [P. K. Roy et al., Phys. Rev. Lett. 95, 234801 (2005)]. To focus a space-charge-dominated charge bunch to sufficiently high intensities for ion-beam-heated warm dense matter and inertial fusion energy studies, simultaneous transverse and longitudinal compression to a coincident focal plane is required. Optimizing the compression under the appropriate constraints can deliver higher intensity per unit length of accelerator to the target, thereby facilitating the creation of more compact and cost-effective ion beam drivers. The experiments utilized a drift region filled with high-density plasma in order to neutralize the space charge and current of an {approx}300 keV K{sup +} beam and have separately achieved transverse and longitudinal focusing to a radius <2 mm and pulse duration <5 ns, respectively. Simulation predictions and recent experiments demonstrate that a strong solenoid (B{sub Z} < 100 kG) placed near the end of the drift region can transversely focus the beam to the longitudinal focal plane. This paper reports on simulation predictions and experimental progress toward realizing simultaneous transverse and longitudinal charge bunch focusing. The proposed NDCX-II facility would capitalize on the insights gained from NDCX simulations and measurements in order to provide a higher-energy (>2 MeV) ion beam user-facility for warm dense matter and inertial fusion energy-relevant target physics experiments.

  18. Techniques for optically compressing light intensity ranges

    SciTech Connect (OSTI)

    Rushford, Michael C.

    1989-01-01

    A pin hole camera assembly for use in viewing an object having a relatively large light intensity range, for example a crucible containing molten uranium in an atomic vapor laser isotope separator (AVLIS) system is disclosed herein. The assembly includes means for optically compressing the light intensity range appearing at its input sufficient to make it receivable and decipherable by a standard video camera. A number of different means for compressing the intensity range are disclosed. These include the use of photogray glass, the use of a pair of interference filters, and the utilization of a new liquid crystal notch filter in combination with an interference filter.

  19. Techniques for optically compressing light intensity ranges

    DOE Patents [OSTI]

    Rushford, M.C.

    1989-03-28

    A pin hole camera assembly for use in viewing an object having a relatively large light intensity range, for example a crucible containing molten uranium in an atomic vapor laser isotope separator (AVLIS) system is disclosed herein. The assembly includes means for optically compressing the light intensity range appearing at its input sufficient to make it receivable and decipherable by a standard video camera. A number of different means for compressing the intensity range are disclosed. These include the use of photogray glass, the use of a pair of interference filters, and the utilization of a new liquid crystal notch filter in combination with an interference filter. 18 figs.

  20. Energy Intensity Indicators: Commercial Source Energy Consumption

    Broader source: Energy.gov [DOE]

    Figure C1 below reports as index numbers over the period 1970 through 2011: 1) commercial building floor space, 2) energy use based on source energy consumption, 3) energy intensity, and 4) the...

  1. Building dependability arguments for software intensive systems

    E-Print Network [OSTI]

    Seater, Robert Morrison

    2009-01-01

    A method is introduced for structuring and guiding the development of end-to-end dependability arguments. The goal is to establish high-level requirements of complex software-intensive systems, especially properties that ...

  2. Technical Change, Investment and Energy Intensity

    E-Print Network [OSTI]

    Kratena, Kurt

    This paper analyzes the role of different components of technical change on energy intensity by applying a Translog variable cost function setting to the new EU KLEMS dataset for 3 selected EU countries (Italy, Finland and ...

  3. Absolute vs. intensity-based emission caps

    E-Print Network [OSTI]

    Ellerman, A. Denny.

    Cap-and-trade systems limit emissions to some pre-specified absolute quantity. Intensity-based limits, that restrict emissions to some pre-specified rate relative to input or output, are much more widely used in environmental ...

  4. Computational phase imaging based on intensity transport

    E-Print Network [OSTI]

    Waller, Laura A. (Laura Ann)

    2010-01-01

    Light is a wave, having both an amplitude and a phase. However, optical frequencies are too high to allow direct detection of phase; thus, our eyes and cameras see only real values - intensity. Phase carries important ...

  5. Applications in Data-Intensive Computing

    SciTech Connect (OSTI)

    Shah, Anuj R.; Adkins, Joshua N.; Baxter, Douglas J.; Cannon, William R.; Chavarra-Miranda, Daniel; Choudhury, Sutanay; Gorton, Ian; Gracio, Deborah K.; Halter, Todd D.; Jaitly, Navdeep; Johnson, John R.; Kouzes, Richard T.; Macduff, Matt C.; Marquez, Andres; Monroe, Matthew E.; Oehmen, Christopher S.; Pike, William A.; Scherrer, Chad; Villa, Oreste; Webb-Robertson, Bobbie-Jo M.; Whitney, Paul D.; Zuljevic, Nino

    2010-04-01

    This book chapter, to be published in Advances in Computers, Volume 78, in 2010 describes applications of data intensive computing (DIC). This is an invited chapter resulting from a previous publication on DIC. This work summarizes efforts coming out of the PNNL's Data Intensive Computing Initiative. Advances in technology have empowered individuals with the ability to generate digital content with mouse clicks and voice commands. Digital pictures, emails, text messages, home videos, audio, and webpages are common examples of digital content that are generated on a regular basis. Data intensive computing facilitates human understanding of complex problems. Data-intensive applications provide timely and meaningful analytical results in response to exponentially growing data complexity and associated analysis requirements through the development of new classes of software, algorithms, and hardware.

  6. Laser intensity effects in noncommutative QED

    E-Print Network [OSTI]

    Thomas Heinzl; Anton Ilderton; Mattias Marklund

    2010-02-17

    We discuss a two-fold extension of QED assuming the presence of strong external fields provided by an ultra-intense laser and noncommutativity of spacetime. While noncommutative effects leave the electron's intensity induced mass shift unchanged, the photons change significantly in character: they acquire a quasi-momentum that is no longer light-like. We study the consequences of this combined noncommutative strong-field effect for basic lepton-photon interactions.

  7. ON COMPUTING UPPER LIMITS TO SOURCE INTENSITIES

    SciTech Connect (OSTI)

    Kashyap, Vinay L.; Siemiginowska, Aneta [Smithsonian Astrophysical Observatory, 60 Garden Street, Cambridge, MA 02138 (United States); Van Dyk, David A.; Xu Jin [Department of Statistics, University of California, Irvine, CA 92697-1250 (United States); Connors, Alanna [Eureka Scientific, 2452 Delmer Street, Suite 100, Oakland, CA 94602-3017 (United States); Freeman, Peter E. [Department of Statistics, Carnegie Mellon University, 5000 Forbes Avenue, Pittsburgh, PA 15213 (United States); Zezas, Andreas, E-mail: vkashyap@cfa.harvard.ed, E-mail: asiemiginowska@cfa.harvard.ed, E-mail: dvd@ics.uci.ed, E-mail: jinx@ics.uci.ed, E-mail: aconnors@eurekabayes.co, E-mail: pfreeman@cmu.ed, E-mail: azezas@cfa.harvard.ed [Physics Department, University of Crete, P.O. Box 2208, GR-710 03, Heraklion, Crete (Greece)

    2010-08-10

    A common problem in astrophysics is determining how bright a source could be and still not be detected in an observation. Despite the simplicity with which the problem can be stated, the solution involves complicated statistical issues that require careful analysis. In contrast to the more familiar confidence bound, this concept has never been formally analyzed, leading to a great variety of often ad hoc solutions. Here we formulate and describe the problem in a self-consistent manner. Detection significance is usually defined by the acceptable proportion of false positives (background fluctuations that are claimed as detections, or Type I error), and we invoke the complementary concept of false negatives (real sources that go undetected, or Type II error), based on the statistical power of a test, to compute an upper limit to the detectable source intensity. To determine the minimum intensity that a source must have for it to be detected, we first define a detection threshold and then compute the probabilities of detecting sources of various intensities at the given threshold. The intensity that corresponds to the specified Type II error probability defines that minimum intensity and is identified as the upper limit. Thus, an upper limit is a characteristic of the detection procedure rather than the strength of any particular source. It should not be confused with confidence intervals or other estimates of source intensity. This is particularly important given the large number of catalogs that are being generated from increasingly sensitive surveys. We discuss, with examples, the differences between these upper limits and confidence bounds. Both measures are useful quantities that should be reported in order to extract the most science from catalogs, though they answer different statistical questions: an upper bound describes an inference range on the source intensity, while an upper limit calibrates the detection process. We provide a recipe for computing upper limits that applies to all detection algorithms.

  8. Optical Intensity Interferometry through Atmospheric Turbulence

    E-Print Network [OSTI]

    Peng Kian Tan; Aik Hui Chan; Christian Kurtsiefer

    2015-12-29

    Conventional ground-based astronomical observations suffer from image distortion due to atmospheric turbulence. This can be minimized by choosing suitable geographic locations or adaptive optical techniques, and avoided altogether by using orbital platforms outside the atmosphere. One of the promises of optical intensity interferometry is its independence from atmospherically induced phase fluctuations. By performing narrowband spectral filtering on sunlight and conducting temporal intensity interferometry using actively quenched avalanche photon detectors (APDs), the Solar $g^{(2)}(\\tau)$ signature was directly measured. We observe an averaged photon bunching signal of $g^{(2)}(\\tau) = 1.693 \\pm 0.003$ from the Sun, consistently throughout the day despite fluctuating weather conditions, cloud cover and elevation angle. This demonstrates the robustness of the intensity interferometry technique against atmospheric turbulence and opto-mechanical instabilities, and the feasibility to implement measurement schemes with both large baselines and long integration times.

  9. World Best Practice Energy Intensity Values for Selected Industrial Sectors

    E-Print Network [OSTI]

    Worrell, Ernst; Price, Lynn; Neelis, Maarten; Galitsky, Christina; Zhou, Nan

    2007-01-01

    1 2. World Best Practice Energy IntensityBrussels: IISI. Best practice energy use is also determinedalong with the best practice energy intensity value for

  10. World Best Practice Energy Intensity Values for Selected Industrial Sectors

    E-Print Network [OSTI]

    Worrell, Ernst; Price, Lynn; Neelis, Maarten; Galitsky, Christina; Zhou, Nan

    2007-01-01

    Best Practice Final and Primary Energy Intensity Values forWorld Best Practice Primary Energy Intensity Values forRecovered Pulp Note: Primary energy includes electricity

  11. 2014 call for NERSC's Data Intensive Computing Pilot Program...

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

    NERSC's Data Intensive Computing Pilot Program 2014 call for NERSC's Data Intensive Computing Pilot Program Due December 10 November 18, 2013 by Francesca Verdier (0 Comments)...

  12. EIA Energy Efficiency-Residential Sector Energy Intensities,...

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

    Residential Sector Energy Intensities RESIDENTIAL SECTOR ENERGY INTENSITIES: 1978-2005 Released Date: August 2004 Page Last Modified:June 2009 These tables provide estimates of...

  13. ITP Energy Intensive Processes: Improved Heat Recovery in Biomass...

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

    Intensive Processes: Energy-Intensive Processes Portfolio: Addressing Key Energy Challenges Across U.S. Industry Guide to Low-Emission Boiler and Combustion Equipment Selection...

  14. WHERE ARE THE MOST INTENSE THUNDERSTORMS

    E-Print Network [OSTI]

    Nesbitt, Steve

    provided unparalleled information on the global distribution of intense convective storms. T he Tropical-alti- tude, non-sun-synchronous orbit permits sampling throughout the diurnal cycle of precipitation. The cloud-top temperature of storms has been measured using infrared (IR) bright- ness temperature (Tb

  15. Energy Intensity Indicators: Transportation Energy Consumption

    Broader source: Energy.gov [DOE]

    This section contains an overview of the aggregate transportation sector, combining both passenger and freight segments of this sector. The specific energy intensity indicators for passenger and freight can be obtained from the links, passenger transportation, or freight transportation. For further detail within the transportation sector, download the appropriate Trend Data worksheet containing detailed data and graphics for specific transportation modes.

  16. Adaptive Background Estimation using Intensity Independent Features

    E-Print Network [OSTI]

    Lunds Universitet

    Adaptive Background Estimation using Intensity Independent Features Håkan Ardö, Rikard Berthilsson to rapid changes in lighting conditions. Furthermore, the features can be computed very efficiently using reliable way, also in outdoor scenes where the lighting conditions is changing rapidly due to passing

  17. Storage-Intensive Supercomputing Benchmark Study

    SciTech Connect (OSTI)

    Cohen, J; Dossa, D; Gokhale, M; Hysom, D; May, J; Pearce, R; Yoo, A

    2007-10-30

    Critical data science applications requiring frequent access to storage perform poorly on today's computing architectures. This project addresses efficient computation of data-intensive problems in national security and basic science by exploring, advancing, and applying a new form of computing called storage-intensive supercomputing (SISC). Our goal is to enable applications that simply cannot run on current systems, and, for a broad range of data-intensive problems, to deliver an order of magnitude improvement in price/performance over today's data-intensive architectures. This technical report documents much of the work done under LDRD 07-ERD-063 Storage Intensive Supercomputing during the period 05/07-09/07. The following chapters describe: (1) a new file I/O monitoring tool iotrace developed to capture the dynamic I/O profiles of Linux processes; (2) an out-of-core graph benchmark for level-set expansion of scale-free graphs; (3) an entity extraction benchmark consisting of a pipeline of eight components; and (4) an image resampling benchmark drawn from the SWarp program in the LSST data processing pipeline. The performance of the graph and entity extraction benchmarks was measured in three different scenarios: data sets residing on the NFS file server and accessed over the network; data sets stored on local disk; and data sets stored on the Fusion I/O parallel NAND Flash array. The image resampling benchmark compared performance of software-only to GPU-accelerated. In addition to the work reported here, an additional text processing application was developed that used an FPGA to accelerate n-gram profiling for language classification. The n-gram application will be presented at SC07 at the High Performance Reconfigurable Computing Technologies and Applications Workshop. The graph and entity extraction benchmarks were run on a Supermicro server housing the NAND Flash 40GB parallel disk array, the Fusion-io. The Fusion system specs are as follows: SuperMicro X7DBE Xeon Dual Socket Blackford Server Motherboard; 2 Intel Xeon Dual-Core 2.66 GHz processors; 1 GB DDR2 PC2-5300 RAM (2 x 512); 80GB Hard Drive (Seagate SATA II Barracuda). The Fusion board is presently capable of 4X in a PCIe slot. The image resampling benchmark was run on a dual Xeon workstation with NVIDIA graphics card (see Chapter 5 for full specification). An XtremeData Opteron+FPGA was used for the language classification application. We observed that these benchmarks are not uniformly I/O intensive. The only benchmark that showed greater that 50% of the time in I/O was the graph algorithm when it accessed data files over NFS. When local disk was used, the graph benchmark spent at most 40% of its time in I/O. The other benchmarks were CPU dominated. The image resampling benchmark and language classification showed order of magnitude speedup over software by using co-processor technology to offload the CPU-intensive kernels. Our experiments to date suggest that emerging hardware technologies offer significant benefit to boosting the performance of data-intensive algorithms. Using GPU and FPGA co-processors, we were able to improve performance by more than an order of magnitude on the benchmark algorithms, eliminating the processor bottleneck of CPU-bound tasks. Experiments with a prototype solid state nonvolative memory available today show 10X better throughput on random reads than disk, with a 2X speedup on a graph processing benchmark when compared to the use of local SATA disk.

  18. Passive, Noiseless, Intensity Amplification of Repetitive Signals

    E-Print Network [OSTI]

    Maram, R; Li, M; Azaa, J

    2014-01-01

    Amplification of signal intensity is essential for initiating physical processes, diagnostics, sensing, communications, and scientific measurement. During traditional amplification, the signal is amplified by multiplying the signal carriers through an active gain process using an external power source. However, for repetitive waveforms, sufficient energy for amplification often resides in the signal itself. In such cases, the unneeded external power is wasted, and the signal is additionally degraded by noise and distortions that accompany active gain processes. We show noiseless, intensity amplification of repetitive optical pulse waveforms with a gain from 2 to ~20 without using active gain, by recycling energy already stored in the input repetitive signal. This "green" method uses dispersion-induced self-imaging (Talbot) effects to precisely re-distribute the original signal energy into fewer replica waveforms. This approach simply requires a suitable manipulation of the input signal's phase profile along t...

  19. Intensive Variables & Nanostructuring in Magnetostructural Materials

    SciTech Connect (OSTI)

    Lewis, Laura

    2014-08-13

    Over the course of this project, fundamental inquiry was carried out to investigate, understand and predict the effects of intensive variables, including the structural scale, on magnetostructural phase transitions in the model system of equiatomic FeRh. These transitions comprise simultaneous magnetic and structural phase changes that have their origins in very strong orbital-lattice coupling and thus may be driven by a plurality of effects.

  20. Intense steady state electron beam generator

    DOE Patents [OSTI]

    Hershcovitch, A.; Kovarik, V.J.; Prelec, K.

    1990-07-17

    An intense, steady state, low emittance electron beam generator is formed by operating a hollow cathode discharge plasma source at critical levels in combination with an extraction electrode and a target electrode that are operable to extract a beam of fast primary electrons from the plasma source through a negatively biased grid that is critically operated to repel bulk electrons toward the plasma source while allowing the fast primary electrons to move toward the target in the desired beam that can be successfully transported for relatively large distances, such as one or more meters away from the plasma source. 2 figs.

  1. CHARACTERIZING COSTS, SAVINGS AND BENEFITS OF A SELECTION OF ENERGY EFFICIENT EMERGING TECHNOLOGIES IN THE UNITED STATES

    E-Print Network [OSTI]

    Xu, T.

    2011-01-01

    coal injection Electron Beam Pasteurization Advanced polysilicon production High Intensity Plasma Melting Heat recovery -

  2. China's energy intensity and its determinants at the provincial level

    E-Print Network [OSTI]

    Zhang, Xin, S.M. Massachusetts Institute of Technology

    2009-01-01

    Energy intensity is defined as the amount of energy consumed per dollar of GDP (Gross Domestic Product). The People's Republic of China's (China's) energy intensity has been declining significantly since the late 1970s. ...

  3. INERTIAL FUSION DRIVEN BY INTENSE HEAVY-ION BEAMS

    E-Print Network [OSTI]

    Sharp, W. M.

    2011-01-01

    HIFAN 1830 INERTIAL FUSION DRIVEN BY INTENSE HEAVY-ION BEAMSAC02-05CH11231. INERTIAL FUSION DRIVEN BY INTENSE HEAVY-ION467 (1992). [38] R. W. Moir, Fusion Tech. 25, 5 (1994) [39

  4. Energy End-Use Intensities in Commercial Buildings

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

    lighting intensities per lighted square foot-hour (Figure 23). * Food service and health care buildings had the highest water-heating intensities per square foot--more than...

  5. Precipitation amount and intensity measurements with the Ott Pluvio

    E-Print Network [OSTI]

    Wauben, Wiel

    Precipitation amount and intensity measurements with the Ott Pluvio Wiel Wauben Instrumental Department, INSA-IO, KNMI August 26, 2004 #12;#12;Precipitation amount and intensity measurements................................................................................... 1 2. Precipitation sensors................................................................... 5 2

  6. Turbulence Intensity Comparisons for Pipes with/without Welds

    E-Print Network [OSTI]

    McDonald, Kirk

    Turbulence Intensity Comparisons for Pipes with/without Welds Oct. 24, 2012 Yan Zhan 1 #12;Outline Line Plot of TI at the Pipe Exit Contour of Turbulence Intensity (Page 4 - 9) with a weld - 3.2M with a weld 2.5M Contour of Turbulence Intensity (Page 10 - 15) with a weld - 3.2M without a weld 3

  7. Reconstruction of Intensity From Covered Samples

    SciTech Connect (OSTI)

    Barabash, Rozaliya; Watkins, Thomas R; Meisner, Roberta Ann; Burchell, Timothy D; Rosseel, Thomas M

    2015-01-01

    The safe handling of activated samples requires containment and covering the sample to eliminate any potential for contamination. Subsequent characterization of the surface with x-rays ideally necessitates a thin film. While many films appear visually transparent, they are not necessarily x-ray transparent. Each film material has a unique beam attenuation and sometimes have amorphous peaks that can superimpose with those of the sample. To reconstruct the intensity of the underlying activated sample, the x-ray attenuation and signal due to the film needs to be removed from that of the sample. This requires the calculation of unique deconvolution parameters for the film. The development of a reconstruction procedure for a contained/covered sample is described.

  8. Position, rotation, and intensity invariant recognizing method

    DOE Patents [OSTI]

    Ochoa, Ellen (Pleasanton, CA); Schils, George F. (San Ramon, CA); Sweeney, Donald W. (Alamo, CA)

    1989-01-01

    A method for recognizing the presence of a particular target in a field of view which is target position, rotation, and intensity invariant includes the preparing of a target-specific invariant filter from a combination of all eigen-modes of a pattern of the particular target. Coherent radiation from the field of view is then imaged into an optical correlator in which the invariant filter is located. The invariant filter is rotated in the frequency plane of the optical correlator in order to produce a constant-amplitude rotational response in a correlation output plane when the particular target is present in the field of view. Any constant response is thus detected in the output The U.S. Government has rights in this invention pursuant to Contract No. DE-AC04-76DP00789 between the U.S. Department of Energy and AT&T Technologies, Inc.

  9. THE CENTER FOR DATA INTENSIVE COMPUTING

    SciTech Connect (OSTI)

    GLIMM,J.

    2002-11-01

    CDIC will provide state-of-the-art computational and computer science for the Laboratory and for the broader DOE and scientific community. We achieve this goal by performing advanced scientific computing research in the Laboratory's mission areas of High Energy and Nuclear Physics, Biological and Environmental Research, and Basic Energy Sciences. We also assist other groups at the Laboratory to reach new levels of achievement in computing. We are ''data intensive'' because the production and manipulation of large quantities of data are hallmarks of scientific research in the 21st century and are intrinsic features of major programs at Brookhaven. An integral part of our activity to accomplish this mission will be a close collaboration with the University at Stony Brook.

  10. THE CENTER FOR DATA INTENSIVE COMPUTING

    SciTech Connect (OSTI)

    GLIMM,J.

    2001-11-01

    CDIC will provide state-of-the-art computational and computer science for the Laboratory and for the broader DOE and scientific community. We achieve this goal by performing advanced scientific computing research in the Laboratory's mission areas of High Energy and Nuclear Physics, Biological and Environmental Research, and Basic Energy Sciences. We also assist other groups at the Laboratory to reach new levels of achievement in computing. We are ''data intensive'' because the production and manipulation of large quantities of data are hallmarks of scientific research in the 21st century and are intrinsic features of major programs at Brookhaven. An integral part of our activity to accomplish this mission will be a close collaboration with the University at Stony Brook.

  11. THE CENTER FOR DATA INTENSIVE COMPUTING

    SciTech Connect (OSTI)

    GLIMM,J.

    2003-11-01

    CDIC will provide state-of-the-art computational and computer science for the Laboratory and for the broader DOE and scientific community. We achieve this goal by performing advanced scientific computing research in the Laboratory's mission areas of High Energy and Nuclear Physics, Biological and Environmental Research, and Basic Energy Sciences. We also assist other groups at the Laboratory to reach new levels of achievement in computing. We are ''data intensive'' because the production and manipulation of large quantities of data are hallmarks of scientific research in the 21st century and are intrinsic features of major programs at Brookhaven. An integral part of our activity to accomplish this mission will be a close collaboration with the University at Stony Brook.

  12. Multiparameter Intelligent Monitoring in Intensive Care Ii (Mimic-Ii): A Public-Access Intensive Care Unit Database

    E-Print Network [OSTI]

    Saeed, Mohammed

    Objective: We sought to develop an intensive care unit research database applying automated techniques to aggregate high-resolution diagnostic and therapeutic data from a large, diverse population of adult intensive care ...

  13. Distilling two-atom distance information from intensity-intensity correlation functions RID A-5077-2009

    E-Print Network [OSTI]

    Chang, Jun-Tao; Evers, Joerg; Zubairy, M. Suhail

    2006-01-01

    accessible in experiments. For this, we numerically solve the time-evolution equations of the system and calculate the steady-state intensity-intensity correlation by using the Laplace transform and quantum regression theory. By varying the interatomic...

  14. Data Intensive Architecture for Scalable Cyber Analytics

    SciTech Connect (OSTI)

    Olsen, Bryan K.; Johnson, John R.; Critchlow, Terence J.

    2011-12-19

    Cyber analysts are tasked with the identification and mitigation of network exploits and threats. These compromises are difficult to identify due to the characteristics of cyber communication, the volume of traffic, and the duration of possible attack. In this paper, we describe a prototype implementation designed to provide cyber analysts an environment where they can interactively explore a months worth of cyber security data. This prototype utilized On-Line Analytical Processing (OLAP) techniques to present a data cube to the analysts. The cube provides a summary of the data, allowing trends to be easily identified as well as the ability to easily pull up the original records comprising an event of interest. The cube was built using SQL Server Analysis Services (SSAS), with the interface to the cube provided by Tableau. This software infrastructure was supported by a novel hardware architecture comprising a Netezza TwinFin for the underlying data warehouse and a cube server with a FusionIO drive hosting the data cube. We evaluated this environment on a months worth of artificial, but realistic, data using multiple queries provided by our cyber analysts. As our results indicate, OLAP technology has progressed to the point where it is in a unique position to provide novel insights to cyber analysts, as long as it is supported by an appropriate data intensive architecture.

  15. Intense ultraviolet perturbations on aquatic primary producers

    E-Print Network [OSTI]

    Guimarais, Mayrene; Horvath, Jorge

    2010-01-01

    During the last decade, the hypothesis that one or more biodiversity drops in the Phanerozoic eon, evident in the geological record, might have been caused by the most powerful kind of stellar explosion so far known (Gamma Ray Bursts) has been discussed in several works. These stellar explosions could have left an imprint in the biological evolution on Earth and in other habitable planets. In this work we calculate the short-term lethality that a GRB would produce in the aquatic primary producers on Earth. This effect on life appears as a result of ultraviolet (UV) re-transmission in the atmosphere of a fraction of the gamma energy, resulting in an intense UV flash capable of penetrating ~ tens of meters in the water column in the ocean. We focus on the action of the UV flash on phytoplankton, as they are the main contributors to global aquatic primary productivity. Our results suggest that the UV flash could cause an hemispheric reduction of phytoplankton biomass in the upper mixed layer of the World Ocean o...

  16. Economic potential of intensive culture of Penaeus vannamei in Mexico

    E-Print Network [OSTI]

    De La Mora Perez-Arce, Jose Bernardo

    1991-01-01

    operations; these operations included stocking, feeding, monitoring and harvesting of semi- intensively managed ponds stocked with Penaeus vannamei. Also, intensively managed round ponds were studied during my internship; this allowed me to become.... EXECUTIVE SUMMARY Two hypothetical shrimp farms on the Pacific coast of Mexico were designed to allow financial analysis of methods and management technologies developed in the USA for intensive culture of Penaeus vannamei under local conditions in west...

  17. Ionized channel generation of an intense-relativistic electron beam

    DOE Patents [OSTI]

    Frost, Charles A. (Albuquerque, NM); Leifeste, Gordon T. (Albuquerque, NM); Shope, Steven L. (Albuquerque, NM)

    1988-01-01

    A foilless intense relativistic electron beam generator uses an ionized cnel to guide electrons from a cathode passed an anode to a remote location.

  18. Table 6. Energy intensity by State (2000-2011

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

    Energy intensity by State (2000-2011)" "thousand Btu per dollar of GDP" ,,,"Change" ,,,"2000 to 2011" "State",1997,1998,1999,2000,2001,2002,2003,2004,2005...

  19. Energy End-Use Intensities in Commercial Buildings

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

    Intensities The purpose of this section is to provide information on how energy was used for space conditioning--heating, cooling, and ventilation--in commercial...

  20. Table C10. Electricity Consumption and Expenditure Intensities...

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

    Electricity Consumption and Expenditure Intensities, 1999" ,"Electricity Consumption",,,,,,"Electricity Expenditures" ,"per Building (thousand kWh)","per Square Foot (kWh)","per...

  1. The direct injection of intense ion beams from a high field electron cyclotron resonance ion source into a radio frequency quadrupole

    SciTech Connect (OSTI)

    Rodrigues, G. Kanjilal, D.; Roy, A.; Becker, R.; Baskaran, R.

    2014-02-15

    The ion current achievable from high intensity ECR sources for highly charged ions is limited by the high space charge. This makes classical extraction systems for the transport and subsequent matching to a radio frequency quadrupole (RFQ) accelerator less efficient. The direct plasma injection (DPI) method developed originally for the laser ion source avoids these problems and uses the combined focusing of the gap between the ion source and the RFQ vanes (or rods) and the focusing of the rf fields from the RFQ penetrating into this gap. For high performance ECR sources that use superconducting solenoids, the stray magnetic field of the source in addition to the DPI scheme provides focusing against the space charge blow-up of the beam. A combined extraction/matching system has been designed for a high performance ECR ion source injecting into an RFQ, allowing a total beam current of 10 mA from the ion source for the production of highly charged {sup 238}U{sup 40+} (1.33 mA) to be injected at an ion source voltage of 60 kV. In this design, the features of IGUN have been used to take into account the rf-focusing of an RFQ channel (without modulation), the electrostatic field between ion source extraction and the RFQ vanes, the magnetic stray field of the ECR superconducting solenoid, and the defocusing space charge of an ion beam. The stray magnetic field is shown to be critical in the case of a matched beam.

  2. Title of Dissertation: LONGITUDINAL DYNAMICS OF AN INTENSE ELECTRON BEAM

    E-Print Network [OSTI]

    Anlage, Steven

    ABSTRACT Title of Dissertation: LONGITUDINAL DYNAMICS OF AN INTENSE ELECTRON BEAM John Richardson fusion, spallation neutron sources, free-electron lasers, and other applications. In addition, all beams beams. #12;LONGITUDINAL DYNAMICS OF AN INTENSE ELECTRON BEAM By John Richardson Harris. Dissertation

  3. Title of Dissertation: CONTROL AND TRANSPORT OF INTENSE ELECTRON BEAMS

    E-Print Network [OSTI]

    Anlage, Steven

    ABSTRACT Title of Dissertation: CONTROL AND TRANSPORT OF INTENSE ELECTRON BEAMS Hui Li, Doctor of beam characteristics over long distances. The University of Maryland Electron Ring (UMER), which uses low energy, high current electron beams to model the transport physics of intense space

  4. Vessel tractography using an intensity based tensor model

    E-Print Network [OSTI]

    Yanikoglu, Berrin

    Vessel tractography using an intensity based tensor model Suheyla Cetin1 , Gozde Unal1 , Ali Demir1 method, which is based on an intensity-based tensor that fits to a vessel. Our model is initialized with a single seed point and it is ca- pable of capturing whole vessel tree by an automatic branch detection

  5. Intensive Summer Spanish Courses in Barcelona for Erasmus & University .

    E-Print Network [OSTI]

    Greifswald, Ernst-Moritz-Arndt-Universitt

    Intensive Summer Spanish Courses in Barcelona for Erasmus & University . 2014 -AUGUST 11th -SEPTEMBER- OCTOBER SpainBcn-Programs in Barcelona, is the best place to learn Spanish fast, in a warm in Barcelona or elsewhere in Spain (many students attending Spanish Universities take a 2/3/4 weeks Intensive

  6. Knowledge-Intensive Work in the Oil and Gas Industry

    E-Print Network [OSTI]

    Knowledge-Intensive Work in the Oil and Gas Industry: A Case Study Thesis for the degree collaborative work practices within a large international oil and gas company (OGC). The work is founded empirical findings, we argue that in knowledge-intensive, interdisciplinary work such as oil and gas

  7. LIQUID METAL JET TARGETS FOR INTENSE HIGH ENERGY BEAMS

    E-Print Network [OSTI]

    McDonald, Kirk

    LIQUID METAL JET TARGETS FOR INTENSE HIGH ENERGY BEAMS G. I. Silvestrov, Budker Institute for Nuclear Physics Novosibirsk, August 1998. #12;1 LIQUID METAL JET TARGETS FOR INTENSE HIGH ENERGY BEAMS target of liquid metal. The technical solution is producing the target in the form of flat jet flowing

  8. Precipitation amount and intensity measurements using a windscreen

    E-Print Network [OSTI]

    Wauben, Wiel

    Precipitation amount and intensity measurements using a windscreen Wiel Wauben Instrumental Department, INSA-IO, KNMI June 21, 2004 #12;#12;Precipitation amount and intensity measurements using................................................................................... 1 2. Precipitation gauge and measurement setup............................ 3 2.1. KNMI electronic

  9. A Comprehensive System of U.S. Energy Intensity Indicators

    Broader source: Energy.gov [DOE]

    This report describes a comprehensive system of energy intensity indicators for the United States that has been developed for the Department of Energy's Office of Energy Efficiency and Renewable Energy (EERE) over the past decade. This system of indicators is hierarchical in nature, beginning with detailed indexes of energy intensity for various sectors of the economy, which are ultimately aggregated to an overall energy intensity index for the economy as a whole. The aggregation of energy intensity indexes to higher levels in the hierarchy is performed with a version of the Log Mean Divisia index (LMDI) method. Based upon the data and methods in the system of indicators, the economy-wide energy intensity index shows a decline of about 14% in 2011 relative to a 1985 base year.

  10. Variability of Gas Composition and Flux Intensity in Natural Marine Hydrocarbon Seeps

    E-Print Network [OSTI]

    Clark, J F; Schwager, Katherine; Washburn, Libe

    2005-01-01

    of gas composition and flux intensity in natural marineof gas composition and flux intensity in natural marine

  11. Spatiotemporal focusing does not always improve axial intensity localization

    E-Print Network [OSTI]

    Cheng, Ya; Wang, Zhaohui; Li, Guihua; Zeng, Bin; He, Fei; Chu, Wei; Yao, Jinping; Qiao, Lingling

    2015-01-01

    We report on an experimental comparison on critical intensities of nonlinear self-focusing in air with conventional focusing and spatiotemporal focusing schemes. Our results show that the conventional focusing with the focal lens completely filled with the incident beam allows for the strongest axial intensity confinement against the self-focusing effect. This is because that in the high-numerical-aperture condition, the focal spot will have a compact size which results in a high focal intensity. Meanwhile, the Rayleigh length of the focused beam will be substantially shortened which efficiently postpones the onset of self-focusing.

  12. Study of high frequency & low frequency electronic ballasts for HID lamps

    E-Print Network [OSTI]

    Peng, Hua

    1997-01-01

    known to avoid acoustic resonances. This thesis focuses on real-time detection of acoustic resonance occurrence by measuring lamp electrical parameters. Theoretical analysis and experiment results pronounce that the variation of the lamp impedance ([]R...

  13. Energy intensity in China's iron and steel sector

    E-Print Network [OSTI]

    Xu, Jingsi, M.C.P. Massachusetts Institute of Technology

    2011-01-01

    In this study, I examine the spatial and economic factors that influence energy intensity in China's iron and steel sector, namely industrial value added, renovation investment, coke consumption, and local coke supply. ...

  14. China energy issues : energy intensity, coal liquefaction, and carbon pricing

    E-Print Network [OSTI]

    Wu, Ning, Ph. D. Massachusetts Institute of Technology

    2011-01-01

    In my dissertation I explore three independent, but related, topics on China's energy issues. First, I examine the drivers for provincial energy-intensity trends in China, and finds that technology innovation is the key ...

  15. Engineering Strength, Porosity, and Emission Intensity of Nanostructur...

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

    Engineering Strength, Porosity, and Emission Intensity of Nanostructured CdSe Networks by Altering the Building-Block Shape Home Author: H. Yu, R. Bellair, R. M. Kannan, S. L....

  16. IFTS Intensive Course on Advanced Plasma Physics-Spring 2011,

    E-Print Network [OSTI]

    Zonca, Fulvio

    IFTS Intensive Course on Advanced Plasma Physics-Spring 2011, Non-linear charged particle dynamics/2 with the arc length along the magnetic field line, at the lowest order in the drift expansion for the charged

  17. Energy End-Use Intensities in Commercial Buildings

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

    as buildings of the 1980's. In this section, intensities are based upon the entire building stock, not just those buildings using a particular fuel for a given end use. This...

  18. 2nd conference on Intense field- Short Wavelength Atomic and...

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

    nd conference on Intense field- Short Wavelength Atomic and Molecular Processes - ISWAMP2 http:iswamp2.jlu.edu.cn July 20-22, 2013; Xi'an, China...

  19. Diurnal analysis of intensity trends in Atlantic tropical cyclones

    E-Print Network [OSTI]

    Kowch, Roman S

    2013-01-01

    I postulate that a diurnal cycle may exist in observational variables related to tropical cyclone (TC) intensity. Prior studies document a significant diurnal signal in moist convection across tropical regions. Since ...

  20. Estimating material and energy intensities of urban areas

    E-Print Network [OSTI]

    Quinn, David James, Ph. D. Massachusetts Institute of Technology

    2012-01-01

    The objective of this thesis is to develop methods to estimate, analyze and visualize the resource intensity of urban areas. Understanding the resource consumption of the built environment is particularly relevant in cities ...

  1. precipitation frequency & intensity in instantaneous and aggregated data

    E-Print Network [OSTI]

    Kuang, Zhiming

    precipitation frequency & intensity in instantaneous and aggregated data Michela Biasutti1, Sandra - Ocean Implications (and a suggestion for model diagnostics) Outline #12;4 Minute-by-minute precipitation

  2. Observational tests of hurricane intensity estimations using GPS radio occultations

    E-Print Network [OSTI]

    Vergados, Panagiotis

    This study presents a novel approach to estimating the intensity of hurricanes using temperature profiles from Global Positioning System radio occultation (GPSRO) measurements. Previous research has shown that the temperature ...

  3. Ion Acceleration from the Interaction of Ultra-Intense Lasers with Solid Foils

    SciTech Connect (OSTI)

    Allen, M

    2004-11-24

    The discovery that ultra-intense laser pulses (I > 10{sup 18} W/cm{sup 2}) can produce short pulse, high energy proton beams has renewed interest in the fundamental mechanisms that govern particle acceleration from laser-solid interactions. Experiments have shown that protons present as hydrocarbon contaminants on laser targets can be accelerated up to energies > 50 MeV. Different theoretical models that explain the observed results have been proposed. One model describes a front-surface acceleration mechanism based on the ponderomotive potential of the laser pulse. At high intensities (I > 10{sup 18} W/cm{sup 2}), the quiver energy of an electron oscillating in the electric field of the laser pulse exceeds the electron rest mass, requiring the consideration of relativistic effects. The relativistically correct ponderomotive potential is given by U{sub p} = ([1 + I{lambda}{sup 2}/1.3 x 10{sup 18}]{sup 1/2} - 1) m{sub o}c{sup 2}, where I{lambda}{sup 2} is the irradiance in W {micro}m{sup 2}/cm{sup 2} and m{sub o}c{sup 2} is the electron rest mass. At laser irradiance of I{lambda}{sup 2} {approx} 10{sup 20} W {micro}m{sup 2}/cm{sup 2}, the ponderomotive potential can be of order several MeV. A few recent experiments--discussed in Chapter 3 of this thesis--consider this ponderomotive potential sufficiently strong to accelerate protons from the front surface of the target to energies up to tens of MeV. Another model, known as Target Normal Sheath Acceleration (TNSA), describes the mechanism as an electrostatic sheath on the back surface of the laser target. According to the TNSA model, relativistic hot electrons created at the laser-solid interaction penetrate the foil where a few escape to infinity. The remaining hot electrons are retained by the target potential and establish an electrostatic sheath on the back surface of the target. In this thesis we present several experiments that study the accelerated ions by affecting the contamination layer from which they originate. Radiative heating was employed as a method of removing contamination from palladium targets doped with deuterium. We present evidence that ions heavier than protons can be accelerated if hydrogenous contaminants that cover the laser target can be removed. We show that deuterons can be accelerated from the deuterated-palladium target, which has been radiatively heated to remove contaminants. Impinging a deuteron beam onto a tritiated-titanium catcher could lead to the development of a table-top source of short-pulse, 14-MeV fusion neutrons. We also show that by using an argon-ion sputter gun, contaminants from one side of the laser target can be selectively removed without affecting the other side. We show that irradiating a thin metallic foil with an ultra-intense laser pulse produces a proton beam with a yield of 1.5-2.5 10{sup 11} and temperature, kT = 1.5 MeV with a maximum proton energy > 9 MeV. Removing contaminants from the front surface of the laser target with an argon-ion sputter gun, had no observable effect on the proton beam. However, removing contaminants from the back surface of the laser target reduced the proton beam by two orders of magnitude to, at most, a yield of {approx} 10{sup 9} and a maximum proton energy < 4 MeV. Based on these observations, we conclude that the majority (> 99%) of high energy protons (E > 5 MeV) from the interaction of an ultra-intense laser pulse with a thin foil originate on the back surface of the foil--as predicted by the TNSA model. Our experimental results are in agreement with PIC simulations showing back surface protons reach energies up to 13 MeV, while front surface protons reach a maximum energy of 4 MeV. Well diagnosed and controllable proton beams will have many applications: neutron radiography, material damage studies, production of medical isotopes, and as a high-resolution radiography tool for diagnosing opaque materials and plasmas. Well collimated and focusable ion beams may also prove beneficial for alternative inertial-fusion concepts such as proton fast ignition, a pote

  4. Interpreting the unresolved intensity of cosmologically redshifted line radiation

    E-Print Network [OSTI]

    Switzer, Eric R; Masui, Kiyoshi W; Pen, Ue-Li; Voytek, Tabitha C

    2015-01-01

    Intensity mapping experiments survey the spectrum of diffuse line radiation rather than detect individual objects at high signal-to-noise. Spectral maps of unresolved atomic and molecular line radiation contain three-dimensional information about the density and environments of emitting gas, and efficiently probe cosmological volumes out to high redshift. Intensity mapping survey volumes also contain all other sources of radiation at the frequencies of interest. Continuum foregrounds are typically ~10^2-10^3 times brighter than the cosmological signal. The instrumental response to bright foregrounds will produce new spectral degrees of freedom that are not known in advance, nor necessarily spectrally smooth. The intrinsic spectra of foregrounds may also not be well-known in advance. We describe a general class of quadratic estimators to analyze data from single-dish intensity mapping experiments, and determine contaminated spectral modes from the data itself. The key attribute of foregrounds is not that they ...

  5. Energy Intensity Trends in AEO2010 (released in AEO2010)

    Reports and Publications (EIA)

    2010-01-01

    Energy intensity (energy consumption per dollar of real GDP) indicates how much energy a country uses to produce its goods and services. From the early 1950s to the early 1970s, U.S. total primary energy consumption and real GDP increased at nearly the same annual rate. During that period, real oil prices remained virtually flat. In contrast, from the mid-1970s to 2008, the relationship between energy consumption and real GDP growth changed, with primary energy consumption growing at less than one-third the previous average rate and real GDP growth continuing to grow at its historical rate. The decoupling of real GDP growth from energy consumption growth led to a decline in energy intensity that averaged 2.8% per year from 1973 to 2008. In the Annual Energy Outlook 2010 Reference case, energy intensity continues to decline, at an average annual rate of 1.9% from 2008 to 2035.

  6. Foreground Subtraction in Intensity Mapping with the SKA

    E-Print Network [OSTI]

    Wolz, Laura; Alonso, David; Blake, Chris; Bull, Philip; Chang, Tzu-Ching; Ferreira, Pedro G; Kuo, Cheng-Yu; Santos, Marios G; Shaw, Richard

    2015-01-01

    21cm intensity mapping experiments aim to observe the diffuse neutral hydrogen (HI) distribution on large scales which traces the Cosmic structure. The Square Kilometre Array (SKA) will have the capacity to measure the 21cm signal over a large fraction of the sky. However, the redshifted 21cm signal in the respective frequencies is faint compared to the Galactic foregrounds produced by synchrotron and free-free electron emission. In this article, we review selected foreground subtraction methods suggested to effectively separate the 21cm signal from the foregrounds with intensity mapping simulations or data. We simulate an intensity mapping experiment feasible with SKA phase 1 including extragalactic and Galactic foregrounds. We give an example of the residuals of the foreground subtraction with a independent component analysis and show that the angular power spectrum is recovered within the statistical errors on most scales. Additionally, the scale of the Baryon Acoustic Oscillations is shown to be unaffecte...

  7. Simulating the Large-Scale Structure of HI Intensity Maps

    E-Print Network [OSTI]

    Seehars, Sebastian; Witzemann, Amadeus; Refregier, Alexandre; Amara, Adam; Akeret, Joel

    2015-01-01

    Intensity mapping of neutral hydrogen (HI) is a promising observational probe of cosmology and large-scale structure. We present wide field simulations of HI intensity maps based on N-body simulations, the halo model, and a phenomenological prescription for assigning HI mass to halos. The simulations span a redshift range of 0.35 HI. We apply and compare several estimators for the angular power spectrum and its covariance. We verify that they agree with analytic predictions on large scales and study the validity of approximations based on Gaussian random fields, particularly in the context of the covariance. We discuss how our results and the simulated maps can be useful for planning and interpreting future HI intensity mapping surveys.

  8. Numerical solution of transient eddy current problems with input current intensities as boundary data

    E-Print Network [OSTI]

    Rodríguez, Rodolfo

    Numerical solution of transient eddy current problems with input current intensities as boundary to solve transient eddy current problems with input current intensities as data, formulated in terms: Eddy current problems, time-dependent electromagnetic problems, input current intensities, finite

  9. Measurements of integral muon intensity at large zenith angles

    E-Print Network [OSTI]

    A. N. Dmitrieva; D. V. Chernov; R. P. Kokoulin; K. G. Kompaniets; G. Mannocchi; A. A. Petrukhin; O. Saavedra; V. V. Shutenko; D. A. Timashkov; G. Trinchero; I. I. Yashin

    2006-11-28

    High-statistics data on near-horizontal muons collected with Russian-Italian coordinate detector DECOR are analyzed. Precise measurements of muon angular distributions in zenith angle interval from 60 to 90 degrees have been performed. In total, more than 20 million muons are selected. Dependences of the absolute integral muon intensity on zenith angle for several threshold energies ranging from 1.7 GeV to 7.2 GeV are derived. Results for this region of zenith angles and threshold energies have been obtained for the first time. The dependence of integral intensity on zenith angle and threshold energy is well fitted by a simple analytical formula.

  10. Energy use and carbon dioxide emissions in energy-intensive industries in key developing countries

    E-Print Network [OSTI]

    Price, Lynn; Worrell, Ernst; Phylipsen, Dian

    1999-01-01

    Energy Efficiency and Carbon Dioxide Emissions ReductionEnergy Use and Carbon Dioxide Emissions in Energy-IntensiveEnergy Use and Carbon Dioxide Emissions in Energy-Intensive

  11. Experiments at the Intensity Frontier | U.S. DOE Office of Science...

    Office of Science (SC) Website

    Intensity Frontier High Energy Physics (HEP) HEP Home About Research Facilities User Facilities Facility Ops Experiments at the Energy Frontier Experiments at the Intensity...

  12. Intensive neutrino source on the base of lithium converter

    E-Print Network [OSTI]

    Lyashuk, V I

    2015-01-01

    An intensive antineutrino source with a hard spectrum (with energy up to 13 MeV, average energy 6.5 MeV) can be realized on the base of beta-decay of short living isotope 8Li (0.84 s). The 8Li isotope (generated in activation of 7Li isotope) is a prime perspective antineutrino source owing to the hard antineutrino spectrum and square dependence of cross section on the energy. Up today nuclear reactors are the most intensive neutrino sources. Antineutrino reactor spectra have large uncertainties in the summary antineutrino spectrum at energy E>6 MeV. Use of 8Li isotope allows to decrease sharply the uncertainties or to exclude it completely. An intensive neutron fluxes are requested for rapid generation of 8Li isotope. The installations on the base of nuclear reactors can be an alternative for nuclear reactors as traditional neutron sources. It is possible creation of neutrino sources another in principle: on the base of tandem of accelerators, neutron generating targets and lithium converter. An intensive neu...

  13. PNNLs Data Intensive Computing research battles Homeland Security threats

    ScienceCinema (OSTI)

    David Thurman; Joe Kielman; Katherine Wolf; David Atkinson

    2012-12-31

    The Pacific Northwest National Laboratorys (PNNL's) approach to data intensive computing (DIC) is focused on three key research areas: hybrid hardware architecture, software architectures, and analytic algorithms. Advancements in these areas will help to address, and solve, DIC issues associated with capturing, managing, analyzing and understanding, in near real time, data at volumes and rates that push the frontiers of current technologies.

  14. Explosive photodissociation of methane induced by ultrafast intense laser

    SciTech Connect (OSTI)

    Kong Fanao; Luo Qi; Xu Huailiang; Sharifi, Mehdi; Song Di; Chin, See Leang

    2006-10-07

    A new type of molecular fragmentation induced by femtosecond intense laser at the intensity of 2x10{sup 14} W/cm{sup 2} is reported. For the parent molecule of methane, ethylene, n-butane, and 1-butene, fluorescence from H (n=3{yields}2), CH (A {sup 2}{delta}, B {sup 2}{sigma}{sup -}, and C {sup 2}{sigma}{sup +}{yields}X {sup 2}{pi}), or C{sub 2} (d {sup 3}{pi}{sub g}{yields}a {sup 3}{pi}{sub u}) is observed in the spectrum. It shows that the fragmentation is a universal property of neutral molecule in the intense laser field. Unlike breaking only one or two chemical bonds in conventional UV photodissociation, the fragmentation caused by the intense laser undergoes vigorous changes, breaking most of the bonds in the molecule, like an explosion. The fragments are neutral species and cannot be produced through Coulomb explosion of multiply charged ion. The laser power dependence of CH (A{yields}X) emission of methane on a log-log scale has a slope of 10{+-}1. The fragmentation is thus explained as multiple channel dissociation of the superexcited state of parent molecule, which is created by multiphoton excitation.

  15. PNNL Data-Intensive Computing for a Smarter Energy Grid

    ScienceCinema (OSTI)

    Carol Imhoff; Zhenyu (Henry) Huang; Daniel Chavarria

    2012-12-31

    The Middleware for Data-Intensive Computing (MeDICi) Integration Framework, an integrated platform to solve data analysis and processing needs, supports PNNL research on the U.S. electric power grid. MeDICi is enabling development of visualizations of grid operations and vulnerabilities, with goal of near real-time analysis to aid operators in preventing and mitigating grid failures.

  16. Continuous Snow Depth, Intensive Site 1, Barrow, Alaska

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Bob Busey; Larry Hinzman; Vladimir Romanovsky; William Cable

    Continuous Snow depth data are being collected at several points within four intensive study areas in Barrow, Alaska. These data are being collected to better understand the energy dynamics above the active layer and permafrost. They complement in-situ snow and soil measurements at this location. The data could also be used as supporting measurements for other research and modeling activities.

  17. Solar panels are cost intensive, have limitations with respect to

    E-Print Network [OSTI]

    Langendoen, Koen

    Solar panels are cost intensive, have limitations with respect to where they can be integrated of the window, integrated in the window frames, strip-shaped CIGS PV solar cells convert the light the CIGS PV solar cells in the form of strips at the edges of the window in the window frame. These solar

  18. IFTS Intensive Course on Advanced Plasma Physics-Spring 2011,

    E-Print Network [OSTI]

    Zonca, Fulvio

    IFTS Intensive Course on Advanced Plasma Physics-Spring 2011, Non-linear charged particle dynamics, the arc length along the magnetic field line and J the second invariant. (iii) In a large aspect ration), Ann. Phys. 41, 302), where the authors show that, when studying the physics of magnetized plasmas

  19. Continuous Snow Depth, Intensive Site 1, Barrow, Alaska

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Bob Busey; Larry Hinzman; Vladimir Romanovsky; William Cable

    2014-11-06

    Continuous Snow depth data are being collected at several points within four intensive study areas in Barrow, Alaska. These data are being collected to better understand the energy dynamics above the active layer and permafrost. They complement in-situ snow and soil measurements at this location. The data could also be used as supporting measurements for other research and modeling activities.

  20. Surface Intensive Materials Processing for Multi-Functional Purposes

    SciTech Connect (OSTI)

    Ila, D.; Williams, E.K.; Muntele, C.I.; George, M.A.; Poker, D.B.; Hensley, D.K.; Larkin, D.J.

    2000-03-06

    We have chosen silicon carbide (SiC) as a multi-functional material to demonstrate the application of surface intensive processing for device fabrication. We will highlight two devices which are produced in house at the Center for Irradiation of materials of Alabama A and M university: (A) High temperature electronic gas sensor, (B) High temperature optical properties/sensor.

  1. Gamma Ray Bursts Sudden, intense flashes of gamma rays

    E-Print Network [OSTI]

    Washington at Seattle, University of - Department of Physics, Electroweak Interaction Research Group

    Gamma Ray Bursts #12;The Case Sudden, intense flashes of gamma rays come from nowhere and disappear with out a trace. Incredibly powerful: A single gamma ray burst is hundreds of times brighter a supernova #12;Who Vela (1960's) Looking for arms testing, found gamma ray bursts Compton Gamma Ray Observatory

  2. PNNL pushing scientific discovery through data intensive computing breakthroughs

    ScienceCinema (OSTI)

    Deborah Gracio; David Koppenaal; Ruby Leung

    2012-12-31

    The Pacific Northwest National Laboratorys approach to data intensive computing (DIC) is focused on three key research areas: hybrid hardware architectures, software architectures, and analytic algorithms. Advancements in these areas will help to address, and solve, DIC issues associated with capturing, managing, analyzing and understanding, in near real time, data at volumes and rates that push the frontiers of current technologies.

  3. Intense Lithium Streams in Tokamaks 1 Leonid E. Zakharov,

    E-Print Network [OSTI]

    Zakharov, Leonid E.

    Intense Lithium Streams in Tokamaks 1 Leonid E. Zakharov, Princeton University, Princeton Plasma. Temperature of the streams. 2. Lithium jets. 3. Injection into vacuum chamber. 4. Propulsion inside the vacuum chamber. 5. Stability of the lithium streams. 6. Expulsion of the lithium. 7. Summary. PRINCETON PLASMA

  4. Intensity Based Image Registration By Nonparametric Local Smoothing

    E-Print Network [OSTI]

    Qiu, Peihua

    features is often a challenging and time-consuming process, intensity-based image registration, by which of this technique is to integrate useful information from different sources (e.g., CT, PET, SPECT, X-ray, ultrasound an important tool for improving the quality of certain image-based technologies [21]. Mathematically, the image

  5. Intensity Based Image Registration By Nonparametric Local Smoothing

    E-Print Network [OSTI]

    Qiu, Peihua

    features is often a challenging and time­consuming process, intensity­based image registration, by which of this technique is to integrate useful information from different sources (e.g., CT, PET, SPECT, X­ray, ultrasound an important tool for improving the quality of certain image­based technologies [21]. Mathematically, the image

  6. Global warming and hurricane intensity and frequency: The debate continues

    E-Print Network [OSTI]

    Kareem, Ahsan

    Global warming and hurricane intensity and frequency: The debate continues Megan Mc mmccull3@nd.edu ABSTRACT: The recent destruction due to hurricanes and the apparent increase in frequency. Warm water holds more energy to fuel hurricanes and may contribute to the conditions needed

  7. A unified approach for inversion problems in intensity-modulated radiation therapy

    E-Print Network [OSTI]

    Censor, Yair

    intensities (radiation intensity map) deliverable by all beamlets, that would result in a clinically value, however, this radiation intensity map must be implementable, in a clinically acceptable formA unified approach for inversion problems in intensity-modulated radiation therapy Yair Censor1

  8. Regulation of GHG emissions from transportation fuels: Emission quota versus emission intensity standard

    E-Print Network [OSTI]

    Rajagopal, Deepak

    2010-01-01

    mandated envision that blending gasoline (or diesel) withemission intensity as blending gasoline from crude oil with

  9. Cross-correlation cosmography with HI intensity mapping

    E-Print Network [OSTI]

    Pourtsidou, Alkistis; Crittenden, Robert

    2015-01-01

    The cross-correlation of a foreground density field with two different background convergence fields can be used to measure cosmographic distance ratios and constrain dark energy parameters. We investigate the possibility of performing such measurements using a combination of optical galaxy surveys and HI intensity mapping surveys, with emphasis on the performance of the planned Square Kilometre Array (SKA). Using HI intensity mapping to probe the foreground density tracer field and/or the background source fields has the advantage of excellent redshift resolution and a longer lever arm achieved by using the lensing signal from high redshift background sources. Our results show that, for our best SKA-optical configuration of surveys, a constant equation of state for dark energy can be constrained to $\\simeq 8\\%$ for a sky coverage $f_{\\rm sky}=0.5$ and assuming a $\\sigma(\\Omega_{\\rm DE})=0.03$ prior for the dark energy density parameter.

  10. Dynamic characteristic of intense short microwave propagation in an atmosphere

    SciTech Connect (OSTI)

    Yee, J.H.; Alvarez, R.A.; Mayhall, D.J.; Madsen, N.K.; Cabayan, H.S.

    1983-07-01

    The dynamic behavior of an intense microwave pulse which propagates through the atmosphere will be presented. Our theoretical results are obtained by solving Maxwell's equations, together with the electron fluid equations. Our calculations show that although large portions of the initial energy are absorbed by the electrons that are created through the avalanche process, a significant amount of energy is still able to reach the earth's surface. The amount of energy that reaches the earth's surface as a function of initial energy and wave shape after having propagated through 100 km in the atmosphere are investigated. Results for the air breakdown threshold intensity as a function of the pressure for different pulse widths and different frequencies will also be presented. In addition, we will present a comparison between the theoretical and the experimental results for the pulse shape of a short microwave pulse after it has traveled through a rectangular wave guide which contains a section of air. 23 references, 9 figures.

  11. Device for imaging scenes with very large ranges of intensity

    DOE Patents [OSTI]

    Deason, Vance Albert (Idaho Falls, ID)

    2011-11-15

    A device for imaging scenes with a very large range of intensity having a pair of polarizers, a primary lens, an attenuating mask, and an imaging device optically connected along an optical axis. Preferably, a secondary lens, positioned between the attenuating mask and the imaging device is used to focus light on the imaging device. The angle between the first polarization direction and the second polarization direction is adjustable.

  12. CHALLENGES IN DATA INTENSIVE ANALYSIS AT SCIENTIFIC EXPERIMENTAL USER FACILITIES

    SciTech Connect (OSTI)

    Kleese van Dam, Kerstin; Li, Dongsheng; Miller, Stephen D.; Cobb, John W.; Green, Mark L.; Ruby, Catherine L.

    2011-12-31

    This chapter will discuss the critical data intensive analysis and visualiza-tion challenges faced by the experimental science community at large scale and laboratory based facilities. The chapter will further highlight initial solutions under development through community efforts and lay out perspectives for the future, such as the potential of more closely linked experimental and computational science approaches, methods to achieve real time analysis capabilities and the challenges and opportunities of data integration across experimental scales, levels of theory and varying techniques.

  13. A measurement of the relative intensities of some vibronic bands

    E-Print Network [OSTI]

    Loyd, Coleman Monroe

    1955-01-01

    ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ . 1 II ~ EXPERIMENTAL ~ III ~ PROCEDURE FOR INTENSITI NEASUREHENTS . IV. EXPERINENTAL RESULTS FOR CHLORINE DIOXIDE ~ ~ ~ ~ 5 14 ~ ~ ~ ~ ~ 19 V. EXPERIHENTAL RESULTS FOR SULPHUR DIOXIDE. . . . 26 VI. CONCLUSIONS...INE DIOXIDE APPARATUS ~ . o . . . ~ 9 4. TOP VIEW OF CH1 CRINE DIOXIDE APPARATUS . 5 ~ CHLORINE DIOXIDE ABSORPTION SPECTROGRAM WITH CAI IBRATION BLANKS ~ ~ ~ e ~ ~ e ~ ~ ~ 6, CHLORINE DIOXIDE DECONPOSITION IiN PROGRESS 10 . 11 7. H AND D CURVE FOil...

  14. Intensive neutrino source on the base of lithium converter

    E-Print Network [OSTI]

    V. I. Lyashuk; Yu. S Lutostansky

    2015-04-13

    An intensive antineutrino source with a hard spectrum (with energy up to 13 MeV, average energy 6.5 MeV) can be realized on the base of beta-decay of short living isotope 8Li (0.84 s). The 8Li isotope (generated in activation of 7Li isotope) is a prime perspective antineutrino source owing to the hard antineutrino spectrum and square dependence of cross section on the energy. Up today nuclear reactors are the most intensive neutrino sources. Antineutrino reactor spectra have large uncertainties in the summary antineutrino spectrum at energy E>6 MeV. Use of 8Li isotope allows to decrease sharply the uncertainties or to exclude it completely. An intensive neutron fluxes are requested for rapid generation of 8Li isotope. The installations on the base of nuclear reactors can be an alternative for nuclear reactors as traditional neutron sources. It is possible creation of neutrino sources another in principle: on the base of tandem of accelerators, neutron generating targets and lithium converter. An intensive neutron flux (i.e., powerful neutron source) is requested for realization of considered neutrino sources (neutrino factories). Different realizations of lithium antineutrino sources (lithium converter on the base of high purified 7Li isotope) are discussed: static regime (i.e., without transport of 8Li isotope to the neutrino detector); dynamic regime (transport of 8Li isotope to the remote detector in a closed cycle); an operation of lithium converter in tandem of accelerator with a neutron-producing target on the base of tungsten, lead or bismuth. Different chemical compounds of lithium (as the substance of the converter) are considered. Heavy water solution of LiOD is proposed as a serious alternative to high-pure 7Li in a metallic state.

  15. Energy Intensity Indicators: Methodology Downloads | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:FinancingPetroleum12, 2015 Infographic courtesyEducation Data JamDepartment2 AEnergy Intensity

  16. Effects of interplanetary shock inclinations on auroral power intensity

    E-Print Network [OSTI]

    Oliveira, D M; Tsurutani, B T; Gjerloev, J W

    2015-01-01

    We derive fast forward interplanetary (IP) shock speeds and impact angles to study the geoeffectivness of 461 IP shocks that occurred from January 1995 to December 2013 using ACE and WIND spacecraft data. The geomagnetic activity is inferred from the SuperMAG project data. SuperMAG is a large chain which employs more than 300 ground stations to compute enhanced versions of the traditional geomagnetic indices. The SuperMAG auroral electroject SME index, an enhanced version of the traditional AE index, is used as an auroral power (AP) indicator. AP intensity jumps triggered by shock impacts are correlated with both shock speed and impact angle. It is found that high AP intensity events typically occur when high speed IP shocks impact the Earths magnetosphere with the shock normal almost parallel to the Sun-Earth line. This result suggests that symmetric and strong magnetospheric compression leads to favorable conditions for intense auroral power release, as shown previously by simulations and observations. Some...

  17. A TWO-PHASE HEAT SPREADER FOR COOLING HIGH HEAT FLUX SOURCES Mitsuo Hashimoto, Hiroto Kasai, Yuichi Ishida, Hiroyuki Ryoson, a

    E-Print Network [OSTI]

    -power lasers, high-intensity light-emitting diodes (LEDs), and semiconductor power devices. The heat spreader

  18. Nuclear data at n_TOF for fundamental science and technological applicationsg pp

    E-Print Network [OSTI]

    McDonald, Kirk

    . González Romero CIEMAT, on behalf of the n_TOF Collaboration Workshop on Applications of High Intensity

  19. Field assessment of an aluminum intensive passenger car

    SciTech Connect (OSTI)

    Cuenca, R.M.

    1994-12-31

    Ford Motor Co. has made a small batch of ``aluminum intensive vehicles`` (AIV), consisting of mid-size cars (Taurus/Sable) with all-aluminum bodies. The first twenty vehicles were made for internal evaluation at Ford, but the second batch of twenty has been placed on the hands of selected independent users, primarily automotive suppliers, for long term field assessment. The mass reduction achieved in the body of an AIV is shown, and compared with an equivalent standard steel body. Argonne obtained one of these vehicles last October; this is an assessment of the fuel consumption and other operational characteristics of this type of car to date.

  20. Assessing Internet energy intensity: A review of methods and results

    SciTech Connect (OSTI)

    Coroama, Vlad C.; Hilty, Lorenz M.; Empa, Swiss Federal Laboratories for Materials Science and Technology, Lerchenfeldstr. 5, 9014 St. Gallen; Centre for Sustainable Communications, KTH Royal Institute of Technology, Lindstedtsvgen 5, 100 44 Stockholm

    2014-02-15

    Assessing the average energy intensity of Internet transmissions is a complex task that has been a controversial subject of discussion. Estimates published over the last decade diverge by up to four orders of magnitude from 0.0064 kilowatt-hours per gigabyte (kWh/GB) to 136 kWh/GB. This article presents a review of the methodological approaches used so far in such assessments: i) topdown analyses based on estimates of the overall Internet energy consumption and the overall Internet traffic, whereby average energy intensity is calculated by dividing energy by traffic for a given period of time, ii) model-based approaches that model all components needed to sustain an amount of Internet traffic, and iii) bottomup approaches based on case studies and generalization of the results. Our analysis of the existing studies shows that the large spread of results is mainly caused by two factors: a) the year of reference of the analysis, which has significant influence due to efficiency gains in electronic equipment, and b) whether end devices such as personal computers or servers are included within the system boundary or not. For an overall assessment of the energy needed to perform a specific task involving the Internet, it is necessary to account for the types of end devices needed for the task, while the energy needed for data transmission can be added based on a generic estimate of Internet energy intensity for a given year. Separating the Internet as a data transmission system from the end devices leads to more accurate models and to results that are more informative for decision makers, because end devices and the networking equipment of the Internet usually belong to different spheres of control. -- Highlights: Assessments of the energy intensity of the Internet differ by a factor of 20,000. We review topdown, model-based, and bottomup estimates from literature. Main divergence factors are the year studied and the inclusion of end devices. We argue against extending the Internet system boundary beyond data transmission. Decision-makers need data that differentiates between end devices and transmission.

  1. Fermilab | Science at Fermilab | Experiments & Projects | Intensity

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration would likeUniverse (Journal Article) | SciTechSubmitted More OftenFrontier Intensity

  2. Optical Fiber High Temperature Sensor Instrumentation for Energy Intensive Industries

    SciTech Connect (OSTI)

    Cooper, Kristie L.; Wang, Anbo; Pickrell, Gary R.

    2006-11-14

    This report summarizes technical progress during the program Optical Fiber High Temperature Sensor Instrumentation for Energy Intensive Industries, performed by the Center for Photonics Technology of the Bradley Department of Electrical and Computer Engineering at Virginia Tech. The objective of this program was to use technology recently invented at Virginia Tech to develop and demonstrate the application of self-calibrating optical fiber temperature and pressure sensors to several key energy-intensive industries where conventional, commercially available sensors exhibit greatly abbreviated lifetimes due primarily to environmental degradation. A number of significant technologies were developed under this program, including a laser bonded silica high temperature fiber sensor with a high temperature capability up to 700C and a frequency response up to 150 kHz, the worlds smallest fiber Fabry-Perot high temperature pressure sensor (125 x 20 ?m) with 700C capability, UV-induced intrinsic Fabry-Perot interferometric sensors for distributed measurement, a single crystal sapphire fiber-based sensor with a temperature capability up to 1600C. These technologies have been well demonstrated and laboratory tested. Our work plan included conducting major field tests of these technologies at EPRI, Corning, Pratt & Whitney, and Global Energy; field validation of the technology is critical to ensuring its usefulness to U.S. industries. Unfortunately, due to budget cuts, DOE was unable to follow through with its funding commitment to support Energy Efficiency Science Initiative projects and this final phase was eliminated.

  3. Precision monitoring of relative beam intensity for Mu2e

    SciTech Connect (OSTI)

    Evans, N.J.; Kopp, S.E.; /Texas U.; Prebys, E.; /Fermilab

    2011-04-01

    For future experiments at the intensity frontier, precise and accurate knowledge of beam time structure will be critical to understanding backgrounds. The proposed Mu2e experiment will utilize {approx}200 ns (FW) bunches of 3 x 10{sup 7} protons at 8 GeV with a bunch-to-bunch period of 1695 ns. The out-of-bunch beam must be suppressed by a factor of 10{sup -10} relative to in-bunch beam and continuously monitored. I propose a Cerenkov-based particle telescope to measure secondary production from beam interactions in a several tens of microns thick foil. Correlating timing information with beam passage will allow the determination of relative beam intensity to arbitrary precision given a sufficiently long integration time. The goal is to verify out-of-bunch extinction to the level 10{sup -6} in the span of several seconds. This will allow near real-time monitoring of the initial extinction of the beam resonantly extracted from Fermilabs Debuncher before a system of AC dipoles and collimators, which will provide the final extinction. The effect on beam emittance is minimal, allowing the necessary continuous measurement. I will present the detector design and some concerns about bunch growth during the resonant extraction.

  4. Ferroplasmons: Intense Localized Surface Plasmons in Metal-Ferromagnetic Nanoparticles

    SciTech Connect (OSTI)

    Sachan, Ritesh [University of Tennessee, Knoxville (UTK); Malasi, Abhinav [ORNL; Ge, Jingxuan [Materials Science and Engineering Department, University of Tennessee, Knoxville, TN, USA; Yadavali, Sagar P [ORNL; Gangopadhyay, Anup [Washington University, St. Louis; Krishna, Dr. Hare [Washington University, St. Louis; Garcia, Hernando [Southern Illinois University; Duscher, Gerd J M [ORNL; Kalyanaraman, Ramki [University of Tennessee, Knoxville (UTK)

    2014-01-01

    Interaction of photons with matter at length scales far below their wavelengths has given rise to many novel phenomena, including localized surface plasmon resonance (LSPR). However, LSPR with narrow bandwidth (BW) is observed only in a select few noble metals, and ferromagnets are not among them. Here, we report the discovery of LSPR in ferromagnetic Co and CoFe alloy (8% Fe) in contact with Ag in the form of bimetallic nanoparticles prepared by pulsed laser dewetting. These plasmons in metal-erromagnetic nanostructures, or ferroplasmons (FP) for short, are in the visible spectrum with comparable intensity and BW to those of the LSPRs from the Ag regions. This finding was enabled by electron energy-loss mapping across individual nanoparticles in a monochromated scanning transmission electron microscope. The appearance of the FP is likely due to plasmonic interaction between the contacting Ag and Co nanoparticles. Since there is no previous evidence for materials that simultaneously show ferromagnetism and such intense LSPRs, this discovery may lead to the design of improved plasmonic materials and applications. It also demonstrates that materials with interesting plasmonic properties can be synthesized using bimetallic nanostructures in contact with each other.

  5. DZero data-intensive computing on the Open Science Grid

    SciTech Connect (OSTI)

    Abbott, B.; /Oklahoma U.; Baranovski, A.; Diesburg, M.; Garzoglio, G.; /Fermilab; Kurca, T.; /Lyon, IPN; Mhashilkar, P.; /Fermilab

    2007-09-01

    High energy physics experiments periodically reprocess data, in order to take advantage of improved understanding of the detector and the data processing code. Between February and May 2007, the DZero experiment has reprocessed a substantial fraction of its dataset. This consists of half a billion events, corresponding to about 100 TB of data, organized in 300,000 files. The activity utilized resources from sites around the world, including a dozen sites participating to the Open Science Grid consortium (OSG). About 1,500 jobs were run every day across the OSG, consuming and producing hundreds of Gigabytes of data. Access to OSG computing and storage resources was coordinated by the SAM-Grid system. This system organized job access to a complex topology of data queues and job scheduling to clusters, using a SAM-Grid to OSG job forwarding infrastructure. For the first time in the lifetime of the experiment, a data intensive production activity was managed on a general purpose grid, such as OSG. This paper describes the implications of using OSG, where all resources are granted following an opportunistic model, the challenges of operating a data intensive activity over such large computing infrastructure, and the lessons learned throughout the project.

  6. Effect of variable suckling intensity upon serum luteinzing hormone in brangus heifers and effect of varible suckling intensity and estrogen administration upon serum luteinizing hormone in brahman cows

    E-Print Network [OSTI]

    Forrest, Philip Kent

    1979-01-01

    EFFECT OF VARIABLE SUCKLING INTENSITY UPON SERUM LUTEINIZING HORMONE IN BRANGUS HEIFERS AND EFFECT OF VARIABLE SUCKLING INTENSITY AND ESTROGEN ADMINISTRATION UPON SERUM LUTEINIZING HORMONE IN BRAHMAN COWS A Thesis by PHILIP KENT FORREST... HORMONE IN BRANGUS HEIFERS AND EFFECT OF VARIABLE SUCKLING INTENSITY AND ESTROGEN ADMINISTRATION UPON SERUM LUTEINIZING HORMONE IN BRAHMAN COWS A Thesis by PHILIP KENT FORREST Approved as to sty1e and content by: (+M Chairman of Committee) Head...

  7. Nonlinear increase of X-ray intensities from thin foils irradiated...

    Office of Scientific and Technical Information (OSTI)

    increase of X-ray intensities from thin foils irradiated with a 200 TW femtosecond laser Citation Details In-Document Search Title: Nonlinear increase of X-ray intensities...

  8. February 11, 1997 Signal-to-Noise Ratio of Intensity Interferometry

    E-Print Network [OSTI]

    Kemner, Ken

    . INTRODUCTION The prospects for an x-ray Hanbury Brown and Twiss (HBT) intensity interferometry experiment using Hanbury Brown and Twiss #12;3 experiment with visible light,[10] in which the correlation of the intensity

  9. Detecting Hazardous Intensive Care Patient Episodes Using Real-time Mortality Models

    E-Print Network [OSTI]

    Hug, Caleb

    2009-08-26

    The modern intensive care unit (ICU) has become a complex, expensive, data-intensive environment. Caregivers maintain an overall assessment of their patients based on important observations and trends. If an advanced ...

  10. Detecting hazardous intensive care patient episodes using real-time mortality models

    E-Print Network [OSTI]

    Hug, Caleb W. (Caleb Wayne)

    2009-01-01

    The modern intensive care unit (ICU) has become a complex, expensive, data-intensive environment. Caregivers maintain an overall assessment of their patients based on important observations and trends. If an advanced ...

  11. Verifica(on of Hurricane Irene, Isaac and Sandy's Storm Track, Intensity, and Wind Radii Errors

    E-Print Network [OSTI]

    Miami, University of

    Verifica(on of Hurricane Irene, Isaac and Sandy's Storm Track, Intensity/onal Hurricane Center (NHC). Forecasts of the track have steadily improved over the past, intensity (MWND) and wind radii (WRAD) errors of Hurricane Irene (2011

  12. Optically Interconnected Data Center Architecture for Bandwidth Intensive Energy Efficient Networking

    E-Print Network [OSTI]

    Bergman, Keren

    Optically Interconnected Data Center Architecture for Bandwidth Intensive Energy Efficient will either be prohibitively costly, overly complex, or result in unsustainable energy requirements. Network of communication-intensive applications. Recent network architectures based on optical circuit switching leverage

  13. Strategies for the Commercialization & Deployment of GHG Intensity-Reducing Technologies & Practices

    Broader source: Energy.gov [DOE]

    This report looks at the best methods of commercializing and deploying energy technologies that reduce greenhouse gas intensity.

  14. Quantifying Regional Economic Impacts of CO2 Intensity Targets in China

    E-Print Network [OSTI]

    Zhang, Da

    2012-09-01

    To address rising energy use and CO2 emissions, Chinas leadership has enacted energy and CO2 intensity

  15. Energy Policy 30 (2002) 151163 Aggregating physical intensity indicators: results of applying the

    E-Print Network [OSTI]

    2002-01-01

    Energy Policy 30 (2002) 151163 Aggregating physical intensity indicators: results of applying and interpretation of energy intensity indicators are a continuing source of debate in the field of energy policy the performance of energy-related policies. Energy intensity indicators continue to be used for monitoring

  16. An Empirical Analysis of Energy Intensity and Its Determinants at the State Level

    E-Print Network [OSTI]

    1 An Empirical Analysis of Energy Intensity and Its Determinants at the State Level Gilbert E. Metcalf* Aggregate energy intensity in the United States has been declining steadily since the mid-1970s and the first oil shock. Energy intensity can be reduced by improving efficiency in the use of energy

  17. Accessing defect dynamics using intense, nanosecond pulsed ion beams

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Persaud, A.; Barnard, J. J.; Guo, H.; Hosemann, P.; Lidia, S.; Minor, A. M.; Seidl, P. A.; Schenkel, T.

    2015-06-18

    Gaining in-situ access to relaxation dynamics of radiation induced defects will lead to a better understanding of materials and is important for the verification of theoretical models and simulations. We show preliminary results from experiments at the new Neutralized Drift Compression Experiment (NDCX-II) at Lawrence Berkeley National Laboratory that will enable in-situ access to defect dynamics through pump-probe experiments. Here, the unique capabilities of the NDCX-II accelerator to generate intense, nanosecond pulsed ion beams are utilized. Preliminary data of channeling experiments using lithium and potassium ions and silicon membranes are shown. We compare these data to simulation results using CrystalmoreTrim. Furthermore, we discuss the improvements to the accelerator to higher performance levels and the new diagnostics tools that are being incorporated.less

  18. Accessing defect dynamics using intense, nanosecond pulsed ion beams

    SciTech Connect (OSTI)

    Persaud, A. [Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Barnard, J. J. [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Guo, H. [Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Hosemann, P. [Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Univ. of California, Berkeley, CA (United States); Lidia, S. [Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Minor, A. M. [Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Univ. of California, Berkeley, CA (United States); Seidl, P. A. [Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Schenkel, T. [Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)

    2015-01-01

    Gaining in-situ access to relaxation dynamics of radiation induced defects will lead to a better understanding of materials and is important for the verification of theoretical models and simulations. We show preliminary results from experiments at the new Neutralized Drift Compression Experiment (NDCX-II) at Lawrence Berkeley National Laboratory that will enable in-situ access to defect dynamics through pump-probe experiments. Here, the unique capabilities of the NDCX-II accelerator to generate intense, nanosecond pulsed ion beams are utilized. Preliminary data of channeling experiments using lithium and potassium ions and silicon membranes are shown. We compare these data to simulation results using Crystal Trim. Furthermore, we discuss the improvements to the accelerator to higher performance levels and the new diagnostics tools that are being incorporated.

  19. Simulations for single-dish intensity mapping experiments

    E-Print Network [OSTI]

    Bigot-Sazy, M -A; Battye, R A; Browne, I W A; Ma, Y -Z; Maffei, B; Noviello, F; Remazeilles, M; Wilkinson, P N

    2015-01-01

    HI intensity mapping is an emerging tool to probe dark energy. Observations of the redshifted HI signal will be contaminated by instrumental noise, atmospheric and Galactic foregrounds. The latter is expected to be four orders of magnitude brighter than the HI emission we wish to detect. We present a simulation of single-dish observations including an instrumental noise model with 1/f and white noise, and sky emission with a diffuse Galactic foreground and HI emission. We consider two foreground cleaning methods: spectral parametric fitting and principal component analysis. For a smooth frequency spectrum of the foreground and instrumental effects, we find that the parametric fitting method provides residuals that are still contaminated by foreground and 1/f noise, but the principal component analysis can remove this contamination down to the thermal noise level. This method is robust for a range of different models of foreground and noise, and so constitutes a promising way to recover the HI signal from the ...

  20. Towards phasing using high X-ray intensity

    SciTech Connect (OSTI)

    Galli, Lorenzo; Son, Sang -Kil; Barends, Thomas R. M.; White, Thomas A.; Barty, Anton; Botha, Sabine; Boutet, Sbastien; Caleman, Carl; Doak, R. Bruce; Nanao, Max H.; Nass, Karol; Shoeman, Robert L.; Timneanu, Nicusor; Santra, Robin; Schlichting, Ilme; Chapman, Henry N.

    2015-09-30

    X-ray free-electron lasers (XFELs) show great promise for macromolecular structure determination from sub-micrometre-sized crystals, using the emerging method of serial femtosecond crystallography. The extreme brightness of the XFEL radiation can multiply ionize most, if not all, atoms in a protein, causing their scattering factors to change during the pulse, with a preferential `bleaching' of heavy atoms. This paper investigates the effects of electronic damage on experimental data collected from a Gd derivative of lysozyme microcrystals at different X-ray intensities, and the degree of ionization of Gd atoms is quantified from phased difference Fourier maps. In conclusion, a pattern sorting scheme is proposed to maximize the ionization contrast and the way in which the local electronic damage can be used for a new experimental phasing method is discussed.

  1. Emittance of positron beams produced in intense laser plasma interaction

    SciTech Connect (OSTI)

    Chen Hui; Hazi, A.; Link, A.; Anderson, S.; Gronberg, J.; Izumi, N.; Tommasini, R.; Wilks, S. [Lawrence Livermore National Laboratory, Livermore, California 94551 (United States); Sheppard, J. C. [SLAC, Standford University, Menlo Park, California 94025 (United States); Meyerhofer, D. D. [Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623 (United States); Baldis, H. A.; Marley, E.; Park, J.; Williams, G. J. [Department of Electrical and Computer Engineering, University of California, Davis, California 95616 (United States); Fedosejev, R.; Kerr, S. [Department of Applied Science, University of Alberta, Alberta T6G 2R3 (Canada)

    2013-01-15

    The first measurement of the emittance of intense laser-produced positron beams has been made. The emittance values were derived through measurements of positron beam divergence and source size for different peak positron energies under various laser conditions. For one of these laser conditions, we used a one dimensional pepper-pot technique to refine the emittance value. The laser-produced positrons have a geometric emittance between 100 and 500 mm{center_dot}mrad, comparable to the positron sources used at existing accelerators. With 10{sup 10}-10{sup 12} positrons per bunch, this low emittance beam, which is quasi-monoenergetic in the energy range of 5-20 MeV, may be useful as an alternative positron source for future accelerators.

  2. Working Group Report: Computing for the Intensity Frontier

    SciTech Connect (OSTI)

    Rebel, B.; Sanchez, M.C.; Wolbers, S.

    2013-10-25

    This is the report of the Computing Frontier working group on Lattice Field Theory prepared for the proceedings of the 2013 Community Summer Study ("Snowmass"). We present the future computing needs and plans of the U.S. lattice gauge theory community and argue that continued support of the U.S. (and worldwide) lattice-QCD effort is essential to fully capitalize on the enormous investment in the high-energy physics experimental program. We first summarize the dramatic progress of numerical lattice-QCD simulations in the past decade, with some emphasis on calculations carried out under the auspices of the U.S. Lattice-QCD Collaboration, and describe a broad program of lattice-QCD calculations that will be relevant for future experiments at the intensity and energy frontiers. We then present details of the computational hardware and software resources needed to undertake these calculations.

  3. INERTIAL FUSION DRIVEN BY INTENSE HEAVY-ION BEAMS

    SciTech Connect (OSTI)

    Sharp, W. M.; Friedman, A.; Grote, D. P.; Barnard, J. J.; Cohen, R. H.; Dorf, M. A.; Lund, S. M.; Perkins, L. J.; Terry, M. R.; Logan, B. G.; Bieniosek, F. M.; Faltens, A.; Henestroza, E.; Jung, J. Y.; Kwan, J. W.; Lee, E. P.; Lidia, S. M.; Ni, P. A.; Reginato, L. L.; Roy, P. K.; Seidl, P. A.; Takakuwa, J. H.; Vay, J.-L.; Waldron, W. L.; Davidson, R. C.; Gilson, E. P.; Kaganovich, I. D.; Qin, H.; Startsev, E.; Haber, I.; Kishek, R. A.; Koniges, A. E.

    2011-03-31

    Intense heavy-ion beams have long been considered a promising driver option for inertial-fusion energy production. This paper briefly compares inertial confinement fusion (ICF) to the more-familiar magnetic-confinement approach and presents some advantages of using beams of heavy ions to drive ICF instead of lasers. Key design choices in heavy-ion fusion (HIF) facilities are discussed, particularly the type of accelerator. We then review experiments carried out at Lawrence Berkeley National Laboratory (LBNL) over the past thirty years to understand various aspects of HIF driver physics. A brief review follows of present HIF research in the US and abroad, focusing on a new facility, NDCX-II, being built at LBNL to study the physics of warm dense matter heated by ions, as well as aspects of HIF target physics. Future research directions are briefly summarized.

  4. Towards phasing using high X-ray intensity

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Galli, Lorenzo; Son, Sang -Kil; Barends, Thomas R. M.; White, Thomas A.; Barty, Anton; Botha, Sabine; Boutet, Sbastien; Caleman, Carl; Doak, R. Bruce; Nanao, Max H.; et al

    2015-09-30

    X-ray free-electron lasers (XFELs) show great promise for macromolecular structure determination from sub-micrometre-sized crystals, using the emerging method of serial femtosecond crystallography. The extreme brightness of the XFEL radiation can multiply ionize most, if not all, atoms in a protein, causing their scattering factors to change during the pulse, with a preferential `bleaching' of heavy atoms. This paper investigates the effects of electronic damage on experimental data collected from a Gd derivative of lysozyme microcrystals at different X-ray intensities, and the degree of ionization of Gd atoms is quantified from phased difference Fourier maps. In conclusion, a pattern sorting schememoreis proposed to maximize the ionization contrast and the way in which the local electronic damage can be used for a new experimental phasing method is discussed.less

  5. Intense Pulsed Neutron Emission from a Compact Pyroelectric Driven Accelerator

    SciTech Connect (OSTI)

    Tang, V; Meyer, G; Falabella, S; Guethlein, G; Sampayan, S; Kerr, P; Rusnak, B; Morse, J

    2008-10-08

    Intense pulsed D-D neutron emission with rates >10{sup 10} n/s during the pulse, pulse widths of {approx}100's ns, and neutron yields >10 k per pulse are demonstrated in a compact pyroelectric accelerator. The accelerator consists of a small pyroelectric LiTaO{sub 3} crystal which provides the accelerating voltage and an independent compact spark plasma ion source. The crystal voltage versus temperature is characterized and compare well with theory. Results show neutron output per pulse that scales with voltage as V{approx}1.7. These neutron yields match a simple model of the system at low voltages but are lower than predicted at higher voltages due to charge losses not accounted for in the model. Interpretation of the data against modeling provides understanding of the accelerator and in general pyroelectric LiTaO{sub 3} crystals operated as charge limited negative high voltage targets. The findings overall serve as the proof-of-principle and basis for pyroelectric neutron generators that can be pulsed, giving peak neutron rates orders of magnitude greater than previous work, and notably increase the potential applications of pyroelectric based neutron generators.

  6. Quasiperiodic and chaotic motions in intense field multiphoton processes

    SciTech Connect (OSTI)

    Shih-I Chu

    1987-09-25

    The question of the behavior of quantum systems in time-dependent fields whose classical counterparts exhibit chaotic behavior is addressed. For any nondissipative bounded quantum system under the influence of polychromatic (i.e., quasiperiodic) fields, it is proved by means of the many-mode Floquet theory that the auto-correlation function will recur infinitely often in the course of time, indicating no strict quantum stochasticity is possible. In particular, for an N-level quantum system undergoing multiphoton transitions, its dynamic behavior is described by the quasiperiodic motion of an (N/sup 2/--1)-dimensional coherence vector S-arrow-right in accord with the SU(N) dynamic symmetries. On the other hand, for any dissipative quantum system, SU(N) symmetries are broken, and non-quasiperiodic behavior is observed as the coherence vector S-arrow-right evolves from an initially (N/sup 2/--1)-dimensional space to a lower-dimensional space. The dynamical behaviors are illustrated for two- and three-level quantum systems driven by intense bichromatic laser fields.

  7. National Level Co-Control Study of the Targets for Energy Intensity and Sulfur Dioxide in China

    E-Print Network [OSTI]

    Zhou, Nan

    2013-01-01

    the Tool BEST Cement: Benchmarking and Energy Savings ToolZhou. 2008. World Best Practice Energy Intensity Values forpublications/world-best-practice-energy- intensity-values-

  8. Industrial Sector Energy Demand: Revisions for Non-Energy-Intensive Manufacturing (released in AEO2007)

    Reports and Publications (EIA)

    2007-01-01

    For the industrial sector, the Energy Information Administration's (EIA) analysis and projection efforts generally have focused on the energy-intensive industriesfood, bulk chemicals, refining, glass, cement, steel, and aluminumwhere energy cost averages 4.8% of annual operating cost. Detailed process flows and energy intensity indicators have been developed for narrowly defined industry groups in the energy-intensive manufacturing sector. The non-energy-intensive manufacturing industries, where energy cost averages 1.9% of annual operating cost, previously have received somewhat less attention, however. In Annual Energy Outlook 2006 (AEO), energy demand projections were provided for two broadly aggregated industry groups in the non-energy-intensive manufacturing sector: metal-based durables and other non-energy-intensive. In the AEO2006 projections, the two groups accounted for more than 50% of the projected increase in industrial natural gas consumption from 2004 to 2030.

  9. Changes in energy intensity in the manufacturing sector 1985--1991

    SciTech Connect (OSTI)

    1995-09-15

    In this report, energy intensity is defined as the ratio of energy consumption per unit of output. Output is measured as the constant dollar of value of shipments and receipts, and two measures of energy consumption are presented in British thermal units (Btu): Offsite-Produced Energy and Total Inputs of Energy. A decrease in energy intensity from one period to another suggests an increase in energy efficiency, and vice versa. Energy efficiency can be defined and measured in various ways. Certain concepts of energy efficiency, especially those limited to equipment efficiencies, cannot be measured over time using changes in energy-intensity ratios. While improved energy efficiency will tend to reduce energy intensity, it is also true that a change in energy intensity can be due to factors unrelated to energy efficiency. For this report, energy intensity is used as a surrogate measure for energy efficiency, based on industry knowledge and current methodological analyses.

  10. HIGH ENERGY DENSITY PHYSICS EXPERIMENTS WITH INTENSE HEAVY ION BEAMS

    SciTech Connect (OSTI)

    Henestroza, E.; Leitner, M.; Logan, B.G.; More, R.M.; Roy, P.K.; Ni, P.; Seidl, P.A.; Waldron, W.L.; Barnard, J.J.

    2010-03-16

    The US heavy ion fusion science program has developed techniques for heating ion-beam-driven warm dense matter (WDM) targets. The WDM conditions are to be achieved by combined longitudinal and transverse space-charge neutralized drift compression of the ion beam to provide a hot spot on the target with a beam spot size of about 1 mm, and pulse length about 1-2 ns. As a technique for heating volumetric samples of matter to high energy density, intense beams of heavy ions are capable of delivering precise and uniform beam energy deposition dE/dx, in a relatively large sample size, and the ability to heat any solid-phase target material. Initial experiments use a 0.3 MeV K+ beam (below the Bragg peak) from the NDCX-I accelerator. Future plans include target experiments using the NDCX-II accelerator, which is designed to heat targets at the Bragg peak using a 3-6 MeV lithium ion beam. The range of the beams in solid matter targets is about 1 micron, which can be lengthened by using porous targets at reduced density. We have completed the fabrication of a new experimental target chamber facility for WDM experiments, and implemented initial target diagnostics to be used for the first target experiments in NDCX-1. The target chamber has been installed on the NDCX-I beamline. The target diagnostics include a fast multi-channel optical pyrometer, optical streak camera, VISAR, and high-speed gated cameras. Initial WDM experiments will heat targets by compressed NDCX-I beams and will explore measurement of temperature and other target parameters. Experiments are planned in areas such as dense electronegative targets, porous target homogenization and two-phase equation of state.

  11. HIGH ENERGY DENSITY PHYSICS EXPERIMENTS WITH INTENSE HEAVY ION BEAMS

    SciTech Connect (OSTI)

    Bieniosek, F.M.; Henestroza, E.; Leitner, M.; Logan, B.G.; More, R.M.; Roy, P.K.; Ni, P.; Seidl, P.A.; Waldron, W.L.; Barnard, J.J.

    2008-08-01

    The US heavy ion fusion science program has developed techniques for heating ion-beam-driven warm dense matter (WDM) targets. The WDM conditions are to be achieved by combined longitudinal and transverse space-charge neutralized drift compression of the ion beam to provide a hot spot on the target with a beam spot size of about 1 mm, and pulse length about 1-2 ns. As a technique for heating volumetric samples of matter to high energy density, intense beams of heavy ions are capable of delivering precise and uniform beam energy deposition dE/dx, in a relatively large sample size, and the ability to heat any solid-phase target material. Initial experiments use a 0.3 MeV K+ beam (below the Bragg peak) from the NDCX-I accelerator. Future plans include target experiments using the NDCX-II accelerator, which is designed to heat targets at the Bragg peak using a 3-6 MeV lithium ion beam. The range of the beams in solid matter targets is about 1 micron, which can be lengthened by using porous targets at reduced density. We have completed the fabrication of a new experimental target chamber facility for WDM experiments, and implemented initial target diagnostics to be used for the first target experiments in NDCX-1. The target chamber has been installed on the NDCX-I beamline. The target diagnostics include a fast multi-channel optical pyrometer, optical streak camera, VISAR, and high-speed gated cameras. Initial WDM experiments will heat targets by compressed NDCX-I beams and will explore measurement of temperature and other target parameters. Experiments are planned in areas such as dense electronegative targets, porous target homogenization and two-phase equation of state.

  12. Energy end-use intensities in commercial buildings

    SciTech Connect (OSTI)

    Not Available

    1994-09-01

    This report examines energy intensities in commercial buildings for nine end uses: space heating, cooling, ventilation, lighting, water heating, cooking, refrigeration, office equipment, and other. The objective of this analysis was to increase understanding of how energy is used in commercial buildings and to identify targets for greater energy efficiency which could moderate future growth in demand. The source of data for the analysis is the 1989 Commercial Buildings Energy Consumption survey (CBECS), which collected detailed data on energy-related characteristics and energy consumption for a nationally representative sample of approximately 6,000 commercial buildings. The analysis used 1989 CBECS data because the 1992 CBECS data were not yet available at the time the study was initiated. The CBECS data were fed into the Facility Energy Decision Screening (FEDS) system, a building energy simulation program developed by the US Department of Energy`s Pacific Northwest Laboratory, to derive engineering estimates of end-use consumption for each building in the sample. The FEDS estimates were then statistically adjusted to match the total energy consumption for each building. This is the Energy Information Administration`s (EIA) first report on energy end-use consumption in commercial buildings. This report is part of an effort to address customer requests for more information on how energy is used in buildings, which was an overall theme of the 1992 user needs study. The end-use data presented in this report were not available for publication in Commercial Buildings Energy Consumption and Expenditures 1989 (DOE/EIA-0318(89), Washington, DC, April 1992). However, subsequent reports on end-use energy consumption will be part of the Commercial Buildings Energy Consumption and Expenditures series, beginning with a 1992 data report to be published in early 1995.

  13. Prostate Bed Motion During Intensity-Modulated Radiotherapy Treatment

    SciTech Connect (OSTI)

    Klayton, Tracy; Price, Robert; Buyyounouski, Mark K.; Sobczak, Mark; Greenberg, Richard; Li, Jinsheng; Keller, Lanea; Sopka, Dennis; Kutikov, Alexander; Horwitz, Eric M.

    2012-09-01

    Purpose: Conformal radiation therapy in the postprostatectomy setting requires accurate setup and localization of the prostatic fossa. In this series, we report prostate bed localization and motion characteristics, using data collected from implanted radiofrequency transponders. Methods and Materials: The Calypso four-dimensional localization system uses three implanted radiofrequency transponders for daily target localization and real-time tracking throughout a course of radiation therapy. We reviewed the localization and tracking reports for 20 patients who received ultrasonography-guided placement of Calypso transponders within the prostate bed prior to a course of intensity-modulated radiation therapy at Fox Chase Cancer Center. Results: At localization, prostate bed displacement relative to bony anatomy exceeded 5 mm in 9% of fractions in the anterior-posterior (A-P) direction and 21% of fractions in the superior-inferior (S-I) direction. The three-dimensional vector length from skin marks to Calypso alignment exceeded 1 cm in 24% of all 652 fractions with available setup data. During treatment, the target exceeded the 5-mm tracking limit for at least 30 sec in 11% of all fractions, generally in the A-P or S-I direction. In the A-P direction, target motion was twice as likely to move posteriorly, toward the rectum, than anteriorly. Fifteen percent of all treatments were interrupted for repositioning, and 70% of patients were repositioned at least once during their treatment course. Conclusion: Set-up errors and motion of the prostatic fossa during radiotherapy are nontrivial, leading to potential undertreatment of target and excess normal tissue toxicity if not taken into account during treatment planning. Localization and real-time tracking of the prostate bed via implanted Calypso transponders can be used to improve the accuracy of plan delivery.

  14. SU-E-T-409: Intensity Modulated Robotic Radiotherapy

    SciTech Connect (OSTI)

    Wang, B; Jin, L; Li, J; Chen, L; Ma, C; Fan, J; Zhang, C

    2014-06-01

    Purpose: As compared with the IRIS-based models, the MLC-based CyberKnife system allows more efficient treatment delivery due to its improved coverage of large lesions and intensity modulation. The treatment delivery efficiency is mainly determined by the number of selected nodes. This study aimed to demonstrate that relatively small sets of optimally selected nodes could produce high-quality plans. Methods: The full body path of the CyberKnife system consists of 110 nodes, from which we selected various sets for 4 prostate cancer cases using our in-house beamselection software. With the selected nodes we generated IMRT plans using our in-house beamlet-based inverse-planning optimization program. We also produced IMRT plans using the MultiPlan treatment planning system (version 5.0) for the same cases. Furthermore, the nodes selected by MultiPlan were used to produce plans with our own optimization software so that we could compare the quality of the selected sets of nodes. Results: Our beam-selection program selected one node-set for each case, with the number of nodes ranging from 23 to 34. The IMRT plans based on the selected nodes and our in-house optimization program showed adequate target coverage, with favorable critical structure sparing for the cases investigated. Compared with the plans using the nodes selected by MultiPlan, the plans generated with our selected beams provided superior rectum/bladder sparing for 75% of the cases. The plans produced by MultiPlan with various numbers of nodes also suggested that the plan quality was not compromised significantly when the number of nodes was reduced. Conclusion: Our preliminary results showed that with beamletbased planning optimization, one could produce high-quality plans with an optimal set of nodes for MLC-based robotic radiotherapy. Furthermore, our beam-selection strategy could help further improve critical structure sparing.

  15. Intensity Modulated Radiation Therapy With Dose Painting to Treat Rhabdomyosarcoma

    SciTech Connect (OSTI)

    Yang, Joanna C.; Dharmarajan, Kavita V.; Wexler, Leonard H.; La Quaglia, Michael P.; Happersett, Laura; Wolden, Suzanne L.

    2012-11-01

    Purpose: To examine local control and patterns of failure in rhabdomyosarcoma patients treated with intensity modulated radiation therapy (RT) with dose painting (DP-IMRT). Patients and Methods: A total of 41 patients underwent DP-IMRT with chemotherapy for definitive treatment. Nineteen also underwent surgery with or without intraoperative RT. Fifty-six percent had alveolar histologic features. The median interval from beginning chemotherapy to RT was 17 weeks (range, 4-25). Very young children who underwent second-look procedures with or without intraoperative RT received reduced doses of 24-36 Gy in 1.4-1.8-Gy fractions. Young adults received 50.4 Gy to the primary tumor and lower doses of 36 Gy in 1.8-Gy fractions to at-risk lymph node chains. Results: With 22 months of median follow-up, the actuarial local control rate was 90%. Patients aged {<=}7 years who received reduced overall and fractional doses had 100% local control, and young adults had 79% (P=.07) local control. Three local failures were identified in young adults whose primary target volumes had received 50.4 Gy in 1.8-Gy fractions. Conclusions: DP-IMRT with lower fractional and cumulative doses is feasible for very young children after second-look procedures with or without intraoperative RT. DP-IMRT is also feasible in adolescents and young adults with aggressive disease who would benefit from prophylactic RT to high-risk lymph node chains, although dose escalation might be warranted for improved local control. With limited follow-up, it appears that DP-IMRT produces local control rates comparable to those of sequential IMRT in patients with rhabdomyosarcoma.

  16. Monitoring I/O on Data-Intensive Clusters Visualizing Disk Reads...

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

    Clinton, Mike Mason, Graham Van Heule - HPC 3 1 LA---UR---14---26019 Background Motivation: - IO Intensive Jobs * Large amounts of scientific data 2 Background Motivation: -...

  17. Table 8. Carbon intensity of the economy by State (2000-2011

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

    Carbon intensity of the economy by State (2000-2011)" "metric tons energy-related carbon dioxide per million dollars of GDP" ,,,"Change" ,,,"2000 to 2011"...

  18. Table 7. Carbon intensity of the energy supply by State (2000...

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

    Carbon intensity of the energy supply by State (2000-2011)" "kilograms of energy-related carbon dioxide per million Btu" ,,,"Change" ,,,"2000 to 2011"...

  19. Intense Super-radiant X-rays from a Compact Source using a Nanocathode...

    Office of Scientific and Technical Information (OSTI)

    periodically bunched at the wavelength of interest enabling in-phase super-radiant emission that is far more intense than from unbunched electrons. The periodic bunching is...

  20. A Comparison of Iron and Steel Production Energy Use and Energy Intensity in China and the U.S.

    E-Print Network [OSTI]

    Hasanbeigi, Ali

    2012-01-01

    Intensity GJ/t kgce/t Primary Energy Intensity* GJ/t kgce/tIntensity GJ/t kgce/t Primary Energy Intensity* GJ/t kgce/Scenarios 1, 4 and 6 the primary energy value includes T&D

  1. 2d-PIC simulation of atomic clusters in intense laser fields F. Greschik and H.-J. Kull,

    E-Print Network [OSTI]

    Kull, Hans-Jrg

    Title page Full title 2d-PIC simulation of atomic clusters in intense laser fields Authors F of atomic clusters in intense laser fields Abstract Collective absorption of intense laser pulses by atomic by electron emission increases as a power law with the laser intensity. The absorbed energy per electron

  2. A Computational Model of Knowledge-Intensive Learning and Problem Solving1

    E-Print Network [OSTI]

    Aamodt, Agnar

    1 A Computational Model of Knowledge-Intensive Learning and Problem Solving1 Agnar Aamodt Knowledge. If knowledge-based systems are to become more competent and robust in solving real world problems, they need model - a framework -for knowledge-intensive problem solving and learning from experience. The model has

  3. Second-Best Instruments for Near-Term Climate Policy: Intensity Targets vs. the Safety Valve

    E-Print Network [OSTI]

    Wing, Ian Sue

    Second-Best Instruments for Near-Term Climate Policy: Intensity Targets vs. the Safety Valve Mort Keywords: Uncertainty, climate change, instrument choice, safety valve, intensity target. Abstract Current to be preferred over a safety valve. 1 #12;1. Introduction As many countries prepare to begin their implementation

  4. Storage of water on vegetation under simulated rainfall of varying intensity

    E-Print Network [OSTI]

    Keim, Richard

    Storage of water on vegetation under simulated rainfall of varying intensity R.F. Keim a,*, A Little is understood about how storage of water on forest canopies varies during rainfall, even though storage changes intensity of throughfall and thus affects a variety of hydrological processes

  5. Measurement of proton and anti-proton intensities in the Tevatron Collider

    SciTech Connect (OSTI)

    Stephen Pordes et al.

    2003-06-04

    This paper describes the techniques used to measure the intensities of the proton (p) and anti-proton ({bar p}) beams in the Tevatron collider. The systems provide simultaneous measurements of the intensity of the 36 proton and 36 antiproton bunches and their longitudinal profiles.

  6. Initial ultraviolet-B intensity data at Lawrence Livermore National Laboratory

    SciTech Connect (OSTI)

    Patten, K.O. Jr.; Wuebbles, D.J. [Lawrence Livermore National Lab., CA (United States); Smith, G.J. [New Zealand Inst. for Industrial Research and Development, Lower Hutt (New Zealand)

    1993-10-01

    A measurement of UV-B reaching the ground has been established at the Lawrence Livermore National Laboratory. The instrument is the same as those operated by the National Institute for Water and Atmospheric Research in their network in New Zealand. The wavelength response of the radiometer is similar to the response of human skin to UV-B. Intensity data are collected by averaging meter readings over 10 minutes from 6:00 am to 6:00 pm Pacific Standard Time, then converting to effective UV-B intensity normalized at 310 nm. This report checks the intensities obtained at LLNL from November 1992 to July 1993 against the expected results: Increased solar zenith angle, whether from the daily cycle or from the yearly cycle in solar position, should decrease UV-B intensity at the ground due to increased optical path; and, intervening cloud cover should decrease ground UV-B intensity. Three additional findings are reported here: Maximum UV-B intensity on cloudless days does not always follow a smooth curve, but instead varies either high or low to some extent; Morning UV-B intensities are less than those in the afternoon at comparable solar zenith angles at certain times of year; LLNL wintertime daily-averaged UV-B intensities are somewhat higher than those observed at Auckland, New Zealand in their winter of 1992.

  7. The Effect of Topography on Storm-Track Intensity in a Relatively Simple General Circulation Model

    E-Print Network [OSTI]

    Son, Seok-Woo

    The Effect of Topography on Storm-Track Intensity in a Relatively Simple General Circulation Model The effect of topography on storm-track intensity is examined with a set of primitive equation model flow impinging on the topography. If the background flow consists of a weak double jet, higher

  8. Issues and R&D Required for the Intensity Frontier Accelerators

    SciTech Connect (OSTI)

    Shiltsev, V.; Henderson, S.; Hurh, P.; Kourbanis, I.; Lebedev, V.

    2013-09-26

    Operation, upgrade and development of accelerators for Intensity Frontier face formidable challenges in order to satisfy both the near-term and long-term Particle Physics program. Here we discuss key issues and R&D required for the Intensity Frontier accelerators.

  9. Generation of mega-electron-volt electron beams by an ultrafast intense laser pulse

    E-Print Network [OSTI]

    Umstadter, Donald

    Generation of mega-electron-volt electron beams by an ultrafast intense laser pulse Xiaofang Wang filamentation and beam breakup. These results suggest an approach for generating a beam of femtosecond, Me-intensity lasers has made it pos- sible to study extreme physics on a tabletop. Among the studies, the generation

  10. A hybrid approach to beam angle optimization in intensity-modulated radiation therapy

    E-Print Network [OSTI]

    Bertsimas, Dimitris

    Linear programming Computational experiments a b s t r a c t Intensity-Modulated Radiation Therapy Optimization) is an important problem and is today often based on human experience. In this context, we faceA hybrid approach to beam angle optimization in intensity-modulated radiation therapy D. Bertsimas

  11. Plasma discreteness eects in the presence of an intense, ultrashort laser pulse

    E-Print Network [OSTI]

    Plasma discreteness eects in the presence of an intense, ultrashort laser pulse V.I. Savchenko, intense laser pulse are investigated. Although, for most plasmas of interest, the damping of the laser pulse is due to collective plasma eects, in certain regimes the energy absorbed in the plasma micro#12

  12. Plasma discreteness effects in the presence of an intense, ultrashort laser pulse

    E-Print Network [OSTI]

    Plasma discreteness effects in the presence of an intense, ultrashort laser pulse V. I. Savchenko irradiated by an ultrashort, intense laser pulse are investigated. Although, for most plasmas of interest, the damping of the laser pulse is due to collective plasma effects, in certain regimes the energy absorbed

  13. Plasma discreteness effects in the presence of an intense, ultrashort laser pulse

    E-Print Network [OSTI]

    Plasma discreteness effects in the presence of an intense, ultrashort laser pulse V.I. Savchenko, intense laser pulse are investigated. Although, for most plasmas of interest, the damping of the laser pulse is due to collective plasma effects, in certain regimes the energy absorbed in the plasma

  14. Soil protozoa--An intensive study of population dynamics and community structure in an upland grassland

    E-Print Network [OSTI]

    Soil protozoa--An intensive study of population dynamics and community structure in an upland intensive investigation of soil protozoan diversity sponsored by the Natural Environment Research Council within the context of the fractal character of the soil. We developed methods for estimating

  15. Molecular Dynamics of Methylamine, Methanol, and Methyl Fluoride Cations in Intense 7 Micron Laser Fields

    E-Print Network [OSTI]

    Schlegel, H. Bernhard

    Molecular Dynamics of Methylamine, Methanol, and Methyl Fluoride Cations in Intense 7 Micron Laser of methylamine (CH3NH2 + ), methanol (CH3OH+ ), and methyl fluoride (CH3F+ ) cations by short, intense laser 7 m laser pulses. This work is motivated by recent studies of methanol cations by Yamanouchi and co

  16. The Kuznets-Kaldor-Puzzle and Neutral Cross-Capital-Intensity

    E-Print Network [OSTI]

    Gting, Ralf Hartmut

    The Kuznets-Kaldor-Puzzle and Neutral Cross-Capital-Intensity Structural Change by Denis Stijepic://www.fernuni-hagen.de/ls_wagner/en/ #12;The Kuznets-Kaldor-Puzzle and Neutral Cross- Capital-Intensity Structural Change* Denis Stijepic The Kuznets-Kaldor stylized facts are one of the most striking empirical observations about the development

  17. Light intensity, prey detection and foraging mechanisms of age 0 year yellow perch

    E-Print Network [OSTI]

    Mensinger, Allen F.

    Light intensity, prey detection and foraging mechanisms of age 0 year yellow perch H. E. RICHMOND feeding trials at varying light intensities. Perch were highly effective predators and captured Daphnia pulicaria with 94% overall foraging success at light levels ranging from 0 to 3400lx. Maximum average

  18. 28th International Cosmic Ray Conference 4041 Long-Term Cosmic Ray Intensities: Physical Reconstruc-

    E-Print Network [OSTI]

    Usoskin, Ilya G.

    model of the heliosphere, we calculate the expected differential spectra and integral intensity of galactic cosmic rays at the Earth's orbit since 1610. The calculated cosmic ray integral intensity. (2000) have recently calculated the open solar magnetic flux for the last 400 years from sunspot data

  19. Vasco: A Visual Approach to Explore Object Churn in Framework-intensive Applications

    E-Print Network [OSTI]

    Dufour, Bruno

    Vasco: A Visual Approach to Explore Object Churn in Framework-intensive Applications Fleur Duseau,dufour,sahraouh}@iro.umontreal.ca Abstract--Bloat, and particularly object churn, is a common performance problem in framework-intensive applications. Ob- ject churn consists of an excessive use of temporary objects. Identifying and understanding

  20. U.S. Greenhouse Gas Intensity and the Global Climate Change Initiative (released in AEO2005)

    Reports and Publications (EIA)

    2005-01-01

    On February 14, 2002, President Bush announced the Administrations Global Climate Change Initiative. A key goal of the Climate Change Initiative is to reduce U.S. greenhouse gas intensity by 18% over the 2002 to 2012 time frame. For the purposes of the initiative, greenhouse gas intensity is defined as the ratio of total U.S. greenhouse gas emissions to economic output.

  1. Electrochemical Control of the Time-Dependent Intensity Fluctuations in Surface-Enhanced Raman Scattering (SERS)

    E-Print Network [OSTI]

    Brolo, Alexandre G.

    in surface-enhanced Raman scattering (SERS) intensities were recorded from a roughened silver electrode the applied potential. The potential-controlled distribution of SERS intensities was interpreted by considering the modulation of the surface coverage of the adsorbed dye by the interfacial electric field

  2. Development status of triple-junction solar cells optimized for low intensity low temperature applications

    E-Print Network [OSTI]

    Development status of triple-junction solar cells optimized for low intensity low temperature triple-junction solar cells manufactured by AZUR SPACE Solar Power GmbH under low intensity low unusable for deep space missions. Fig. 1: Example of a flat spot effect present in a triple- junction solar

  3. Oecologia (2000) 124:270279 Springer-Verlag 2000 Abstract Disturbance frequency, intensity, and areal ex-

    E-Print Network [OSTI]

    McCabe, Declan

    2000-01-01

    Oecologia (2000) 124:270279 Springer-Verlag 2000 Abstract Disturbance frequency, intensity The intensity, frequency, and area of disturbance may de- termine the abundance and species richness of an assem for recoloniza- tion. If disturbance frequency is greater than the rate of competitive exclusion, diversity may

  4. Energy Policy 35 (2007) 52675286 The implications of the historical decline in US energy intensity

    E-Print Network [OSTI]

    2007-01-01

    Energy Policy 35 (2007) 52675286 The implications of the historical decline in US energy intensity for long-run CO2 emission projections Ian Sue Winga,, Richard S. Eckausb a Center for Energy 2007 Abstract This paper analyzes the influence of the long-run decline in US energy intensity

  5. FINAL FOCUS ION BEAM INTENSITY FROM TUNGSTEN FOIL CALORIMETER AND SCINTILLATOR IN NDCX-I

    SciTech Connect (OSTI)

    Lidia, S.M.; Bieniosek, F.; Henestroza, E.; Ni, P.; Seidl, P.

    2010-04-30

    Laboratory high energy density experiments using ion beam drivers rely upon the delivery of high-current, high-brightness ion beams with high peak intensity onto targets. Solid-state scintillators are typically used to measure the ion beam spatial profile but they display dose-dependent degradation and aging effects. These effects produce uncertainties and limit the accuracy of measuring peak beam intensities delivered to the target. For beam tuning and characterizing the incident beam intensity, we have developed a cross-calibrating diagnostic suite that extends the upper limit of measurable peak intensity dynamic range. Absolute intensity calibration is obtained with a 3 {micro}m thick tungsten foil calorimeter and streak spectrometer. We present experimental evidence for peak intensity measures in excess of 400 kW/cm{sup 2} using a 0.3 MV, 25 mA, 5-20 {micro}sec K{sup +1} beam. Radiative models and thermal diffusion effects are discussed because they affect temporal and spatial resolution of beam intensity profiles.

  6. A sensitivity study of the thermodynamic environment on GFDL model hurricane intensity: Implications for global warming

    SciTech Connect (OSTI)

    Shen, W.; Tuleya, R.E.; Ginis, I.

    2000-01-01

    In this study, the effect of thermodynamic environmental changes on hurricane intensity is extensively investigated with the National Oceanic and Atmospheric Administration Geophysical Fluid Dynamics Laboratory hurricane model for a suite of experiments with different initial upper-tropospheric temperature anomalies up to {+-}4 C and sea surface temperatures ranging from 26 to 31 C given the same relative humidity profile. The results indicate that stabilization in the environmental atmosphere and sea surface temperature (SST) increase cause opposing effects on hurricane intensity. The offsetting relationship between the effects of atmospheric stability increase (decrease) and SST increase (decrease) is monotonic and systematic in the parameter space. This implies that hurricane intensity increase due to a possible global warming associated with increased CO{sub 2} is considerably smaller than that expected from warming of the oceanic waters alone. The results also indicate that the intensity of stronger (weaker) hurricanes is more (less) sensitive to atmospheric stability and SST changes. The model-attained hurricane intensity is found to be well correlated with the maximum surface evaporation and the large-scale environmental convective available potential energy. The model-attained hurricane intensity if highly correlated with the energy available from wet-adiabatic ascent near the eyewall relative to a reference sounding in the undisturbed environment for all the experiments. Coupled hurricane-ocean experiments show that hurricane intensity becomes less sensitive to atmospheric stability and SST changes since the ocean coupling causes larger (smaller) intensity reduction for stronger (weaker) hurricanes. This implies less increase of hurricane intensity related to a possible global warming due to increased CO{sub 2}.

  7. Intense terahertz emission from relativistic circularly polarized laser pulses interaction with overdense plasmas

    SciTech Connect (OSTI)

    Chen, Zi-Yu; Li, Xiao-Ya [National Key Laboratory of Shock Wave and Detonation Physics, Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang 621900 (China)] [National Key Laboratory of Shock Wave and Detonation Physics, Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang 621900 (China); Yu, Wei [Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800 (China)] [Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800 (China)

    2013-10-15

    During the interaction of a relativistic circularly polarized laser pulse with an overdense plasma target, the longitudinal motion of bunches of electrons under the action of light pressure and electrostatic restore force can emit intense terahertz (THz) pulses. This mechanism allows high pump laser intensity and large electron number participating in the emission. Two-dimensional particle-in-cell simulations are carried out to investigate the THz emission. The results suggest that such a source can produce remarkably intense THz pulses with energy of several mJ/sr and power of tens of gigawatts, which could find applications in nonlinear studies and relativistic laser-plasma interaction diagnostics.

  8. Prospects for clustering and lensing measurements with forthcoming intensity mapping and optical surveys

    E-Print Network [OSTI]

    Pourtsidou, Alkistis; Crittenden, Robert; Metcalf, R Benton

    2015-01-01

    We explore the potential of using intensity mapping surveys (MeerKAT, SKA) and optical galaxy surveys (DES, LSST) to detect HI clustering and weak gravitational lensing of 21cm emission in auto- and cross-correlation. Our forecasts show that high precision measurements of the clustering and lensing signals can be made in the near future using the intensity mapping technique. Such studies can be used to test the intensity mapping method, and constrain parameters such as the HI density $\\Omega_{\\rm HI}$, the HI bias $b_{\\rm HI}$ and the galaxy-HI correlation coefficient $r_{\\rm HI-g}$.

  9. Manpower planning and cycle-time reduction of a labor-intensive assembly line

    E-Print Network [OSTI]

    Oh, Shao Chong

    2010-01-01

    The demand for Gas Lift Mandrels(GLM) in the oil and gas industry is expected to increase over the next few years, requiring Schlumberger's GLM assembly line to increase their manufacturing capacity. Given the labor-intensive ...

  10. Note: Design and initial results of a multi-pulsed intense electron beam source

    SciTech Connect (OSTI)

    Xia, L., E-mail: xialiansheng@caep.cn; Zhang, H.; Yang, A.; Shen, Y.; Wang, W.; Wen, L.; Zhang, K.; Shi, J.; Zhang, L.; Deng, J. [Institute of Fluid Physics, CAEP, Mianyang 621900 (China)

    2014-06-15

    A multi-pulsed intense electron beam source is introduced, including the design and the initial experimental results. The source can generate a burst of three pulses of intense electron beams with energy of 23 MeV and beam intensities of around 2.5 kA. An inductive adder is chosen to generate the pulsed diode voltages and a dispenser cathode is chosen to emit electron beams. The test results indicate that the design of the source is reliable. The multi-pulsed diode voltage is up to 2.5 MV and the beam intensities are more than 2 kA at the exit of the source with small variation.

  11. Energy-Intensive Processes Portfolio: Addressing Key Energy Challenges Across U.S. Industry

    SciTech Connect (OSTI)

    2011-03-07

    AMO is developing advanced technologies that cut energy use and carbon emissions in some of the most energy-intensive processes within U.S. manufacturing. The brochure describes the AMO R&D projects that address these challenges.

  12. Vehicle Technologies Office Merit Review 2015: Magnesium-Intensive Front End Sub-Structure Development

    Broader source: Energy.gov [DOE]

    Presentation given by USAMP at 2015 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Office Annual Merit Review and Peer Evaluation Meeting about magnesium-intensive front end sub...

  13. Hybrid intensity and time-of-flight signal processing techniques for intelligent distance sensors

    E-Print Network [OSTI]

    Hiromi, Itariu

    2013-01-01

    With the advent of "smart" consumer electronics, distance sensing is an increasingly important field in optical sensing. A novel approach to active infrared(IR) 1D distance sensing is proposed, employing both intensity and ...

  14. Determinants of energy intensity in industrialized countries : a comparison of China and India

    E-Print Network [OSTI]

    Huang, Feiya

    2006-01-01

    The amount of final energy per unit of economic output (usually in terms of gross domestic product, or GDP), known as energy intensity, is often used to measure the effectiveness of energy use and the consumption patterns ...

  15. Correlation of intensity fluctuations in beams generated by quasi-homogeneous sources

    E-Print Network [OSTI]

    Visser, Taco D.

    of intensity fluctuations (the Hanbury BrownTwiss effect) that occurs in electromagnetic beams.1364/JOSAA.31.002152 1. INTRODUCTION In the mid-1950s Hanbury Brown and Twiss (HBT) deter- mined the angular

  16. Generation and search of axion-like light particle using intense crystalline field

    E-Print Network [OSTI]

    Wei Liao

    2011-07-19

    Intense electric field $\\sim 10^{10}-10^{11}$ V/cm in crystal has been known for a long time and has wide applications. We study the conversion of axion-like light particle and photon in the intense electric field in crystal. We find that the conversion of axion-like particle and photon happens for energy larger than keV range. We propose search of axion-like light particle using the intense crystalline field. We discuss the solar axion search experiment and a variety of shining-through-wall experiment using crystalline field. Due to the intense crystalline field which corresponds to magnetic field $\\sim 10^4-10^5$ Tesla these experiments are very interesting. In particular these experiments can probe the mass range of axion-like particle from eV to keV.

  17. [19] OSCILLATIONMETHOD 211 breaks down, and the most intense reflections will be systematically un-

    E-Print Network [OSTI]

    Harrison, Stephen C.

    intensities from crystals of large unit cell. The problems imposed by the need to analyze the digitized data of two perpendicular bent mirrors, providing glancing-angle reflection in horizontal and vertical planes

  18. Bulk ablation of soft tissue with intense ultrasound: Modeling and experiments

    E-Print Network [OSTI]

    Mast, T. Douglas

    , the thermal de- struction of large tissue volumes is most commonly per- formed using radiofrequency RF ablation electromagnetic radiation in the 400700 kHz range .3,4 Intense ultrasound treatment, first

  19. Physics of Neutralization of Intense Charged Particle Beam Pulses by a Background Plasma

    E-Print Network [OSTI]

    Kaganovich, I.D.

    2010-01-01

    2002). J.D. Lawson, Physics of Charged Particles Beams, (B. Kusse, J. Moschella, Physics of Fluids 30 , 245 (1987).Davidson and H. Qin, Physics of Intense Charged Particle

  20. The emergence of negotiated family care in intensive care - a grounded theory approach

    E-Print Network [OSTI]

    Kean, Susanne

    2007-01-01

    This thesis describes a qualitative enquiry into the experiences of families visiting an adult intensive care unit (ICU) during a critical illness of a family member and nurses perceptions of families in this environment. ...

  1. Apparatus and process for active pulse intensity control of laser beam

    DOE Patents [OSTI]

    Wilcox, Russell B. (Oakland, CA)

    1992-01-01

    An optically controlled laser pulse energy control apparatus and process is disclosed wherein variations in the energy of a portion of the laser beam are used to vary the resistance of a photodetector such as a photoresistor through which a control voltage is fed to a light intensity controlling device through which a second portion of the laser beam passes. Light attenuation means are provided to vary the intensity of the laser light used to control the resistance of the photodetector. An optical delay path is provided through which the second portion of the beam travels before reaching the light intensity controlling device. The control voltage is supplied by a variable power supply. The apparatus may be tuned to properly attenuate the laser beam passing through the intensity controlling device by adjusting the power supply, the optical delay path, or the light attenuating means.

  2. Multi-objective fuel policies: Renewable fuel standards versus Fuel greenhouse gas intensity standards

    E-Print Network [OSTI]

    Rajagopal, Deepak

    2010-01-01

    of both biofuel and fossil fuel and thereby increases totalof proof to show world fossil fuel price decreases under anyGHG intensity among fossil fuels. We ?nd that the relative

  3. Extreme rainfall intensities and long-term rainfall risk from tropical cyclones

    E-Print Network [OSTI]

    Langousis, Andreas, 1981-

    2009-01-01

    We develop a methodology for the frequency of extreme rainfall intensities caused by tropical cyclones (TCs) in coastal areas. The mean rainfall field associated with a TC with maximum tangential wind speed Vmax, radius ...

  4. Energy Intensity Changes by Sector, 1985-2011 Alternative Measures by Type of Energy

    Broader source: Energy.gov [DOE]

    Further insight with regard to the comparison of intensity changes by sector can be gained by looking at how they differ with respect to different definitions of energy use. Source energy...

  5. Zone folding effect in Raman G-band intensity of twisted bilayer graphene

    E-Print Network [OSTI]

    Dresselhaus, Mildred

    The G-band Raman intensity is calculated for twisted bilayer graphene as a function of laser excitation energy based on the extended tight binding method. Here we explicitly consider the electron-photon and electron-phonon ...

  6. Network of Spaces and Interaction-Related Behaviors in Adult Intensive Care Units

    E-Print Network [OSTI]

    Rashid, Mahbub; Boyle, Diane K.; Crosser, Michael

    2014-12-01

    Using three spatial network measures of space syntax, this correlational study describes four interaction-related behaviors among three groups of users in relation to visibility and accessibility of spaces in four adult intensive care units (ICUs...

  7. Energy prices and energy intensity in China : a structural decomposition analysis and econometrics study

    E-Print Network [OSTI]

    Shi, Xiaoyu

    2006-01-01

    Since the start of its economic reforms in 1978, China's energy prices relative to other prices have increased. At the same time, its energy intensity, i.e., energy consumption per unit of Gross Domestic Product (GDP), has ...

  8. Intensity-resolved Above Threshold Ionization Yields of Atoms with Ultrashort Laser Pulses

    E-Print Network [OSTI]

    Hart, Nathan Andrew

    2012-10-19

    The above threshold ionization (ATI) spectra provide a diversity of information about a laser-atom ionization process such as laser intensity, pulse duration, carrier envelope phase, and atomic energy level spacing. However, the spatial distribution...

  9. Photoionization dynamics and angular squeezing phenomenon in intense long-wavelength laser fields

    E-Print Network [OSTI]

    Chu, Shih-I; Zhou, Zhongyuan

    2011-03-11

    We develop a coherent-state Ehrenfest trajectory (CSET) approach for the nonperturbative study of full electronic and nuclear dynamics of molecules interacting with intense laser fields. In this approach, electrons and ...

  10. Energy prices and energy intensity in China : a structural decomposition analysis and econometric study

    E-Print Network [OSTI]

    Shi, Xiaoyu, M.C.P. Massachusetts Institute of Technology

    2005-01-01

    Since the start of its economic reforms in 1978, China's energy prices relative to other prices have increased. At the same time, its energy intensity, i.e., physical energy consumption per unit of Gross Domestic Product ...

  11. Sensitivity of Tropical Cyclone Intensity to Ventilation in an Axisymmetric Model

    E-Print Network [OSTI]

    Tang, Brian

    The sensitivity of tropical cyclone intensity to ventilation of cooler, drier air into the inner core is examined using an axisymmetric tropical cyclone model with parameterized ventilation. Sufficiently strong ventilation ...

  12. Sub-Orbital Scale variations in the Intensity of the Arabian Sea Monsoon

    E-Print Network [OSTI]

    Ivanochko, Tara S

    A high-resolution multi-proxy reconstruction of the Arabian Sea Summer Monsoon (ASSM) intensity over the past 90,000 years has been determined using two marine sediment cores: one from the Somali margin and one from the ...

  13. Gregorian optical system with non-linear optical technology for protection against intense optical transients

    DOE Patents [OSTI]

    Ackermann, Mark R. (Albuquerque, NM); Diels, Jean-Claude M. (Albuquerque, NM)

    2007-06-26

    An optical system comprising a concave primary mirror reflects light through an intermediate focus to a secondary mirror. The secondary mirror re-focuses the image to a final image plane. Optical limiter material is placed near the intermediate focus to optically limit the intensity of light so that downstream components of the optical system are protected from intense optical transients. Additional lenses before and/or after the intermediate focus correct optical aberrations.

  14. Operation of the intensity monitors in beam transport lines at Fermilab during Run II

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Crisp, J.; Fellenz, B.; Fitzgerald, J.; Heikkinen, D.; Ibrahim, M. A.

    2011-10-06

    The intensity of charged particle beams at Fermilab must be kept within pre-determined safety and operational envelopes in part by assuring all beam within a few percent has been transported from any source to destination. Beam instensity monitors with toroidial pickups provide such beam intensity measurements in the transport lines between accelerators at FNAL. With Run II, much effort was made to continually improve the resolution and accuracy of the system.

  15. Nighttime atmospheric stability changes and their effects on the temporal intensity of a mesoscale convective complex

    E-Print Network [OSTI]

    Hovis, Jeffrey Scott

    1988-01-01

    NIGHTTIME ATMOSPHERIC STABILITY CHANGES AND THEIR EFFECTS ON THE TEMPORAL INTENSITY OF A MESOSCALE CONVECTIVE COMPLEX A Thesis JEFFREY SCOTT HOVIS Submitted to the Graduate College of Texas A&M University in partial fulfillment... of the requirements for the degree of MASTER OF SCIENCE May 1988 Major Subject: Meteorology NIGHTTIME ATMOSPHERIC STABILITY CHANGES AND THEIR EFFECTS ON THE TEMPORAL INTENSITY OF A MESOSCALE CONVECTIVE COMPLEX A Thesis JEFFREY SCOTT HOVIS Approved as to style...

  16. Measuring the impact of an intensive commodity price risk management education program on agricultural producers

    E-Print Network [OSTI]

    McCorkle, Dean Alexander

    2005-08-29

    -1 MEASURING THE IMPACT OF AN INTENSIVE COMMODITY PRICE RISK MANAGEMENT EDUCATION PROGRAM ON AGRICULTURAL PRODUCERS A Dissertation by DEAN ALEXANDER MCCORKLE Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment... of the requirements for the degree of DOCTOR OF PHILOSOPHY May 2005 Major Subject: Agricultural Education MEASURING THE IMPACT OF AN INTENSIVE COMMODITY PRICE RISK MANAGEMENT EDUCATION PROGRAM ON AGRICULTURAL PRODUCERS A Dissertation by DEAN ALEXANDER MCCORKLE...

  17. Tone-evoked Fos labeling in the central auditory pathway : effects of stimulus intensity and auditory fear conditioning

    E-Print Network [OSTI]

    Santos, Teresa P. G

    2006-01-01

    Understanding intensity coding and auditory learning are basic concerns of research on the auditory central pathway. There is no unifying model of intensity coding but several mechanisms have been proposed to play a role. ...

  18. Comparison of the Evolution of Energy Intensity in Spain and in the EU15. Why is Spain Different?

    E-Print Network [OSTI]

    Ocaa, Carlos

    Energy intensity in Spain has increased since 1990, while the opposite has happened in the EU15. Decomposition analysis of primary energy intensity ratios has been used to identify which are the key sectors driving the ...

  19. Baker-Barry Tunnel Lighting: Evaluation of a Potential GATEWAY Demonstrations Project

    SciTech Connect (OSTI)

    Tuenge, Jason R.

    2011-06-28

    The U.S. Department of Energy is evaluating the Baker-Barry Tunnel as a potential GATEWAY Demonstrations project for deployment of solid-state lighting (SSL) technology. The National Park Service views this project as a possible proving ground and template for implementation of light-emitting diode (LED) luminaires in other tunnels, thereby expanding the estimated 40% energy savings from 132 MWh/yr to a much larger figure nationally. Most of the energy savings in this application is attributable to the instant-restrike capability of LED products and to their high tolerance for frequent on/off switching, used here to separately control either end of the tunnel during daytime hours. Some LED luminaires rival or outperform their high-intensity discharge (HID) counterparts in terms of efficacy, but options are limited, and smaller lumen packages preclude true one-for-one equivalence. However, LED products continue to improve in efficacy and affordability at a rate unmatched by other light source technologies; the estimated simple payback period of eight years (excluding installation costs and maintenance savings) can be expected to improve with time. The proposed revisions to the existing high-pressure sodium (HPS) lighting system would require slightly increased controls complexity and significantly increased luminaire types and quantities. In exchange, substantial annual savings (from reduced maintenance and energy use) would be complemented by improved quantity and quality of illumination. Although advanced lighting controls could offer additional savings, it is unclear whether such a system would prove cost-effective; this topic may be explored in future work.

  20. Foreground contamination in Ly? intensity mapping during the epoch of reionization

    SciTech Connect (OSTI)

    Gong, Yan; Cooray, Asantha; Silva, Marta; Santos, Mario G.

    2014-04-10

    The intensity mapping of Ly? emission during the epoch of reionization will be contaminated by foreground emission lines from lower redshifts. We calculate the mean intensity and the power spectrum of Ly? emission at z ? 7 and estimate the uncertainties according to the relevant astrophysical processes. We find that the low-redshift emission lines from 6563 H?, 5007 [O III], and 3727 [O II] will be strong contaminants on the observed Ly? power spectrum. We make use of both the star formation rate and luminosity functions to estimate the mean intensity and power spectra of the three foreground lines at z ? 0.5 for H?, z ? 0.9 for [O III], and z ? 1.6 for [O II], as they will contaminate the Ly? emission at z ? 7. The [O II] line is found to be the strongest. We analyze the masking of the bright survey pixels with a foreground line above some line intensity threshold as a way to reduce the contamination in an intensity mapping survey. We find that the foreground contamination can be neglected if we remove pixels with fluxes above 1.4 10{sup 20} W m{sup 2}.

  1. Intensity-resolved ionization yields of aniline with femtosecond laser pulses

    SciTech Connect (OSTI)

    Strohaber, J.; Hart, N.; Zhu, F.; Nava, R.; Pham, F.; Kolomenskii, A. A.; Paulus, G. G.; Schuessler, H. A.; Mohamed, T.; Schroeder, H.

    2011-12-15

    We present experimental results for the ionization of aniline and benzene molecules subjected to intense ultrashort laser pulses. Measured parent molecular ions yields were obtained using a recently developed technique capable of three-dimensional imaging of ion distributions within the focus of a laser beam. By selecting ions originating from the central region of the focus, where the spatial intensity distribution is nearly uniform, volumetric-free intensity-dependent ionization yields were obtained. The measured data revealed a previously unseen resonance-enhanced multiphoton ionization (REMPI)-like process. Comparison of benzene, aniline, and Xe ion yields demonstrates that the observed intensity-dependent structures are not due to geometric artifacts in the focus. Finally for intensities greater than {approx}3x10{sup 13} W/cm{sup 2}, we attribute the ionization of aniline to a stepwise process going through the {pi}{sigma}{sup *} state which sits three photons above the ground state and two photons below the continuum.

  2. Intensive Observation

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration would likeUniverseIMPACT EVALUATION PLANIs gravityIntellectual PropertyEnergyAdvisor XESpring

  3. Constant-intensity waves and their modulation instability in non-Hermitian potentials

    E-Print Network [OSTI]

    Konstantinos G. Makris; Ziad H. Musslimani; Demetrios N. Christodoulides; Stefan Rotter

    2015-03-31

    In all of the diverse areas of science where waves play an important role, one of the most fundamental solutions of the corresponding wave equation is a stationary wave with constant intensity. The most familiar example is that of a plane wave propagating in free space. In the presence of any Hermitian potential, a wave's constant intensity is, however, immediately destroyed due to scattering. Here we show that this fundamental restriction is conveniently lifted when working with non-Hermitian potentials. In particular, we present a whole new class of waves that have constant intensity in the presence of linear as well as of nonlinear inhomogeneous media with gain and loss. These solutions allow us to study, for the first time, the fundamental phenomenon of modulation instability in an inhomogeneous environment. Our results pose a new challenge for the experiments on non-Hermitian scattering that have recently been put forward.

  4. Calculation of integrated intensities in aberration-corrected Z-contrast images

    SciTech Connect (OSTI)

    Molina, S. I. [Universidad de Cadiz, Spain; Guerrero, M. P. [Universidad de Cadiz, Spain; Galindo, Pedro [Universidad de Cadiz, Spain; Sales, David [Universidad de Cadiz, Spain; Varela del Arco, Maria [ORNL; Pennycook, Stephen J [ORNL

    2011-01-01

    Inclusion of spatial incoherence has been shown to give quantitative agreement between non-aberration-corrected high-angle annular dark-field scanning transmission electron microscopy images and theoretical simulations. Here we show that, using the same approach, a significant improvement in the correlation between calculated and experimental normalized integrated intensities is obtained in the InAsP ternary semiconductor alloy, but residual discrepancies remain. We have demonstrated, in good agreement with experimental intensities obtained in calibrated samples, that normalized integrated intensities show a low dependence on the sample thickness over a wide range of thickness values. This behaviour does not occur in conventional (non-aberration-corrected) images and constitutes a powerful tool for straightforward interpretation of high-resolution images in terms of atomic column-resolved compositional maps.

  5. Optimization of infrared two-color multicycle field synthesis for intense-isolated-attosecond-pulse generation

    SciTech Connect (OSTI)

    Lan Pengfei; Takahashi, Eiji J.; Midorikawa, Katsumi [Extreme Photonics Research Group, RIKEN Advanced Science Institute, 2-1 Hirosawa, Wako, Saitama 351-0198 (Japan)

    2010-11-15

    We present the optimization of the two-color synthesis method for generating an intense isolated attosecond pulse (IAP) in the multicycle regime. By mixing an infrared assistant pulse with a Ti:sapphire main pulse, we show that an IAP can be produced using a multicycle two-color pulse with a duration longer than 30 fs. We also discuss the influence of the carrier-envelope phase (CEP) and the relative intensity on the generation of IAPs. By optimizing the wavelength of the assistant field, IAP generation becomes insensitive to the CEP slip. Therefore, the optimized two-color method enables us to relax the requirements of pulse duration and easily produce the IAP with a conventional multicycle laser pulse. In addition, it enables us to markedly suppress the ionization of the harmonic medium. This is a major advantage for efficiently generating intense IAPs from a neutral medium by applying the appropriate phase-matching and energy-scaling techniques.

  6. Increase in the Intensity of Postmonsoon Bay of Bengal Tropical Cyclones

    SciTech Connect (OSTI)

    Balaguru, Karthik; Taraphdar, Sourav; Leung, Lai-Yung R.; Foltz, Gregory R.

    2014-05-28

    The post-monsoon (October-November) tropical cyclone (TC) season in the Bay of Bengal has spawned many of the deadliest storms in recorded history. Here it is shown that the intensity of post-monsoon Bay of Bengal TCs, and the contribution of major TCs to total TC power, increased during 1981-2010. It is found that changes in environmental parameters are responsible for the observed increases in TC intensity. Increases in sea surface temperature and upper ocean heat content made the ocean more conducive to TC development, while enhanced convective instability made the atmosphere more favorable for the growth of TCs. The largest changes in the atmosphere and ocean occurred in the eastern Bay of Bengal, where nearly all major TCs form. These changes are part of positive linear trends, suggesting that the intensity of post-monsoon Bay of Bengal TCs may continue to increase in the future.

  7. Technique for compressing light intensity ranges utilizing a specifically designed liquid crystal notch filter

    DOE Patents [OSTI]

    Rushford, Michael C. (Livermore, CA)

    1988-01-01

    A pin hole camera assembly for use in viewing an object having a relatively large light intensity range, for example a crucible containing molten metal in an atomic vapor laser isotope separation (AVLIS) system is disclosed herein. The assembly includes means for optically compressing the light intensity range appearing at its input sufficient to make it receivable and decipherable by a standard video camera. To accomplish this, the assembly utilizes the combination of interference filter and a liquid crystal notch filter. The latter which preferably includes a cholesteric liquid crystal arrangement is configured to pass light at all wavelengths, except a relatively narrow wavelength band which defines the filter's notch, and includes means for causing the notch to vary to at least a limited extent with the intensity of light at its light incidence surface.

  8. Dynamic Soil-Structure-Soil-Interaction Analysis of Structures in Dense Urban Environments

    E-Print Network [OSTI]

    Jones, Katherine Carys

    2013-01-01

    Figure 3-21: Saratoga West Valley College, low intensity (Figure 3-28: Saratoga West Valley College, high intensity (Figure 4-11: Saratoga West Valley College, low intensity (

  9. Unveiling temporal correlations characteristic to phase transition in the intensity of a fibre laser radiation

    E-Print Network [OSTI]

    Andres Aragoneses; Laura Carpi; Nikita Tarasov; Dmitry V. Churkin; M. C. Torrent; Cristina Masoller; Sergei K. Turitsyn

    2015-06-09

    We use advanced statistical tools of time-series analysis to characterize the dynamical complexity of the transition to optical wave turbulence in a fibre laser. Ordinal analysis and the horizontal visibility graph applied to the experimentally measured laser output intensity reveal the presence of temporal correlations during the transition from the laminar to the turbulent lasing regimes. Both methods unveil coherent structures with well defined time-scales and strong correlations both, in the timing of the laser pulses and in their peak intensities. Our approach is generic and may be used in other complex systems that undergo similar transitions involving the generation of extreme fluctuations.

  10. Generation of high pressure shocks relevant to the shock-ignition intensity regime

    SciTech Connect (OSTI)

    Batani, D.; Folpini, G.; Giuffrida, L.; Maheut, Y.; Malka, G.; Nicolai, Ph.; Ribeyre, X. [Universit Bordeaux, CNRS, CEA, CELIA (Centre Lasers Intenses et Applications), UMR 5107, F-33405 Talence (France)] [Universit Bordeaux, CNRS, CEA, CELIA (Centre Lasers Intenses et Applications), UMR 5107, F-33405 Talence (France); Antonelli, L. [Universit Bordeaux, CNRS, CEA, CELIA (Centre Lasers Intenses et Applications), UMR 5107, F-33405 Talence (France) [Universit Bordeaux, CNRS, CEA, CELIA (Centre Lasers Intenses et Applications), UMR 5107, F-33405 Talence (France); Universit di Roma Tor Vergata, Roma (Italy); Atzeni, S.; Marocchino, A.; Schiavi, A. [Dipartimento SBAI, Universit di Roma La Sapienza and CNISM, Roma (Italy)] [Dipartimento SBAI, Universit di Roma La Sapienza and CNISM, Roma (Italy); Badziak, J.; Chodukowski, T.; Kalinowska, Z.; Pisarczyk, T.; Rosinski, M. [Institute of Plasma Physics and Laser Microfusion, Warsaw (Poland)] [Institute of Plasma Physics and Laser Microfusion, Warsaw (Poland); Baffigi, F.; Cristoforetti, G.; Gizzi, L. A.; Koester, P. [Intense Laser Irradiation Laboratory, INO-CNR, Pisa (Italy)] [Intense Laser Irradiation Laboratory, INO-CNR, Pisa (Italy); and others

    2014-03-15

    An experiment was performed using the PALS laser to study laser-target coupling and laser-plasma interaction in an intensity regime ?10{sup 16}?W/cm{sup 2}, relevant for the shock ignition approach to Inertial Confinement Fusion. A first beam at low intensity was used to create an extended preformed plasma, and a second one to create a strong shock. Pressures up to 90 Megabars were inferred. Our results show the importance of the details of energy transport in the overdense region.

  11. Simultaneous electronic and the magnetic excitation of a ferromagnet by intense THz pulses

    E-Print Network [OSTI]

    Shalaby, Mostafa; Hauri, Christoph P

    2015-01-01

    The speed of magnetization reversal is a key feature in magnetic data storage. Magnetic fields from intense THz pulses have been recently shown to induce small magnetization dynamics in Cobalt thin film on the sub-picosecond time scale. Here, we show that at higher field intensities, the THz electric field starts playing a role, strongly changing the dielectric properties of the cobalt thin film. Both the electronic and magnetic responses are found to occur simultaneously, with the electric field response persistent on a time scale orders of magnitude longer than the THz stimulus

  12. Search for: All records | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    for a way to improve these results? Response of High-Tc Superconductor Metamaterials to High Intensity THz Radiation Grady, Nathaniel ; Perkins Jr., Bradford G. ;...

  13. LED Outdoor Area Lighting Fact Sheet

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

    Outdoor Area Lighting LED technology is rapidly becoming competitive with high-intensity discharge light sources for outdoor area lighting. This document reviews the major design...

  14. Energy Savings Potential for Street Lighting in India

    E-Print Network [OSTI]

    Johnson, Alissa K.

    2014-01-01

    M. B. Kostic, Light-emitting diodes in street and roadwayCompact fluorescent Light emitting diode High intensityCompact fluorescent Light emitting diode Mercury Vapor High

  15. Advancing Solar Through Photovoltaic Technology Innovations ...

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

    At NREL's High-Intensity Pulse Solar Simulator, NREL's Keith Emery removes an array of multijunction solar cells produced by PV Incubator partner Solar Junction. The NREL...

  16. Women @ Energy: Triveni Rao | Department of Energy

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

    high average current Electron injectors, and the interaction of high intensity short pulse laser on matter. Triveni holds three patents and two invention disclosures, and is a...

  17. Analysis of Potential Energy Saving and CO2 Emission Reduction of Home Appliances and Commercial Equipments in China

    E-Print Network [OSTI]

    Zhou, Nan

    2011-01-01

    2002. Chinese Household Electric Washing Machine Efficiencymachines, copiers, monitors, high intensity discharge lamps and ballasts, electricElectric storage water heaters Household induction cooktop Computer monitors Copy machines

  18. Life-cycle energy savings potential from aluminum-intensive vehicles

    SciTech Connect (OSTI)

    Stodolsky, F.; Vyas, A.; Cuenca, R.; Gaines, L.

    1995-07-01

    The life-cycle energy and fuel-use impacts of US-produced aluminum-intensive passenger cars and passenger trucks are assessed. The energy analysis includes vehicle fuel consumption, material production energy, and recycling energy. A model that stimulates market dynamics was used to project aluminum-intensive vehicle market shares and national energy savings potential for the period between 2005 and 2030. We conclude that there is a net energy savings with the use of aluminum-intensive vehicles. Manufacturing costs must be reduced to achieve significant market penetration of aluminum-intensive vehicles. The petroleum energy saved from improved fuel efficiency offsets the additional energy needed to manufacture aluminum compared to steel. The energy needed to make aluminum can be reduced further if wrought aluminum is recycled back to wrought aluminum. We find that oil use is displaced by additional use of natural gas and nonfossil energy, but use of coal is lower. Many of the results are not necessarily applicable to vehicles built outside of the United States, but others could be used with caution.

  19. Energy Production, Frictional Dissipation, and Maximum Intensity of a Numerically Simulated Tropical Cyclone

    E-Print Network [OSTI]

    Wang, Yuqing

    0 Energy Production, Frictional Dissipation, and Maximum Intensity of a Numerically Simulated is eventually dissipated due to surface friction. Since the energy production rate is a linear function while intensifies. When the dissipation rate eventually reaches the production rate, the TC has no excess energy

  20. Energy Production, Frictional Dissipation, and Maximum Intensity of a Numerically Simulated Tropical Cyclone*

    E-Print Network [OSTI]

    Wang, Yuqing

    Energy Production, Frictional Dissipation, and Maximum Intensity of a Numerically Simulated is eventually dissipated due to surface friction. Since the energy production rate is a linear function while intensifies. When the dissipation rate eventually reaches the production rate, the TC has no excess energy

  1. Outsourcing Resource-Intensive Tasks from Mobile Apps to Clouds: Android and Aneka Integration

    E-Print Network [OSTI]

    Buyya, Rajkumar

    the reduction of application execution time and extension of mobile device battery life. Keywords--Mobile Cloud, resulting in an enhanced user experience. However, the development of a mobile cloud application-intensive mobile tasks in order to alleviate the mobile device load and, consequently, extend the battery life. We

  2. Modeling proton intensity gradients and radiation dose equivalents in the inner

    E-Print Network [OSTI]

    Pringle, James "Jamie"

    Modeling proton intensity gradients and radiation dose equivalents in the inner heliosphere using exposure in IP space. In this paper, we utilize EMMREM to study the radial dependence of proton peak crossfield diffusion at large radial distances. Our results show that radial dependencies of proton peak

  3. Measurement and interpretation of threshold stress intensity factors for steels in high-pressure hydrogen gas.

    SciTech Connect (OSTI)

    Dadfarnia, Mohsen; Nibur, Kevin A.; San Marchi, Christopher W.; Sofronis, Petros; Somerday, Brian P.; Foulk, James W., III; Hayden, Gary A.

    2010-07-01

    Threshold stress intensity factors were measured in high-pressure hydrogen gas for a variety of low alloy ferritic steels using both constant crack opening displacement and rising crack opening displacement procedures. The sustained load cracking procedures are generally consistent with those in ASME Article KD-10 of Section VIII Division 3 of the Boiler and Pressure Vessel Code, which was recently published to guide design of high-pressure hydrogen vessels. Three definitions of threshold were established for the two test methods: K{sub THi}* is the maximum applied stress intensity factor for which no crack extension was observed under constant displacement; K{sub THa} is the stress intensity factor at the arrest position for a crack that extended under constant displacement; and K{sub JH} is the stress intensity factor at the onset of crack extension under rising displacement. The apparent crack initiation threshold under constant displacement, K{sub THi}*, and the crack arrest threshold, K{sub THa}, were both found to be non-conservative due to the hydrogen exposure and crack-tip deformation histories associated with typical procedures for sustained-load cracking tests under constant displacement. In contrast, K{sub JH}, which is measured under concurrent rising displacement and hydrogen gas exposure, provides a more conservative hydrogen-assisted fracture threshold that is relevant to structural components in which sub-critical crack extension is driven by internal hydrogen gas pressure.

  4. Fast Gaussian Process Methods for Point Process Intensity Estimation John P. Cunningham JCUNNIN@STANFORD.EDU

    E-Print Network [OSTI]

    Columbia University

    time requirements. We demonstrate problem specific methods for a class of renewal processes coupled with point process observation models. The problem of intensity estimation then becomes not address the appropriateness of doubly-stochastic point pro- cess models for particular applications

  5. The spatial scales, distribution, and intensity of natural marine hydrocarbon seeps near Coal Oil Point, California

    E-Print Network [OSTI]

    Washburn, Libe

    The spatial scales, distribution, and intensity of natural marine hydrocarbon seeps near Coal Oil pollution sources. A field of strong hydrocarbon seepage offshore of Coal Oil Point near Santa Barbara in the Coal Oil Point field to measure directly the atmospheric gas flux from three seeps of varying size

  6. Energy-efficient Data-intensive Computing with a Fast Array of Wimpy Nodes

    E-Print Network [OSTI]

    necessary to unlock its energy efficiency potential. First, we present a deep study into building FAWNEnergy-efficient Data-intensive Computing with a Fast Array of Wimpy Nodes Vijay R. Vasudevan CMU other entity. #12;Keywords: Energy Efficiency, Low Power, Cluster Computing, Flash #12;For my family

  7. A TEST OF THE PRECIPITATION AMOUNT AND INTENSITY MEASUREMENTS WITH THE OTT PLUVIO

    E-Print Network [OSTI]

    Wauben, Wiel

    A TEST OF THE PRECIPITATION AMOUNT AND INTENSITY MEASUREMENTS WITH THE OTT PLUVIO Wiel M.F. Wauben precipitation sensor of Ott has been tested at KNMI in order to find out whether it is a suitable candidate for replacing the current operational KNMI precipitation gauge. Tests performed at the calibration facilities

  8. Resistive Memory Based Acceleration of Data Intensive Computing Engin Ipek and Eby G. Friedman

    E-Print Network [OSTI]

    Friedman, Eby G.

    significant acceleration and energy reduction over a broad set of data intensive applications. Additionally both write energy and latency in high performance STT-MRAM on-chip caches. 2 Resistive TCAM Accelerator cell and array archi- tecture. High capacity resistive TCAM circuits are placed on a DDR3 compatible

  9. USING THE EARTHQUAKE ENGINEERING INTENSITY SCALE TO IMPROVE URBAN AREA EARTHQUAKE EMERGENCY RESPONSE

    E-Print Network [OSTI]

    Irfanoglu, Ayhan

    USING THE EARTHQUAKE ENGINEERING INTENSITY SCALE TO IMPROVE URBAN AREA EARTHQUAKE EMERGENCY distribution estimation of earthquake damage in building stocks is presented. The purpose is to start a strong urban area earthquake. We used a pair of ground motion and building-tag color databases

  10. (Submitted to Earthquake Spectra in April, 2001.) Structure-Specific Scalar Intensity Measures

    E-Print Network [OSTI]

    Sweetman, Bert

    (Submitted to Earthquake Spectra in April, 2001.) Structure-Specific Scalar Intensity Measures for Near-Source and Ordinary Earthquake Ground Motions Nicolas Luco and C. Allin Cornell, M.EERI Introduced of earthquake records, and (b) linear regression analysis. The efficiency and sufficiency of each

  11. AN ASSESSMENT OF ENERGY INTENSITY INDICATORS AND THEIR ROLE AS POLICY -MAKING TOOLS

    E-Print Network [OSTI]

    AN ASSESSMENT OF ENERGY INTENSITY INDICATORS AND THEIR ROLE AS POLICY - MAKING TOOLS by Mallika as policy tools in the context of issues related to the development, interpretation and application trends in energy use, their role as climate change policy tools is limited, particularly

  12. Fermi-LAT ?-ray anisotropy and intensity explained by unresolved radio-loud active galactic nuclei

    SciTech Connect (OSTI)

    Mauro, Mattia Di; Cuoco, Alessandro; Donato, Fiorenza [Dipartimento di Fisica, Universit di Torino, via P. Giuria 1, Torino, 10125 Italy (Italy); Siegal-Gaskins, Jennifer M., E-mail: mattia.dimauro@to.infn.it, E-mail: alessandro.cuoco@to.infn.it, E-mail: donato@to.infn.it, E-mail: jsg@tapir.caltech.edu [California Institute of Technology, 1200 E. California Blvd., Pasadena, CA, 91125 (United States)

    2014-11-01

    Radio-loud active galactic nuclei (AGN) are expected to contribute substantially to both the intensity and anisotropy of the isotropic ?-ray background (IGRB). In turn, the measured properties of the IGRB can be used to constrain the characteristics of proposed contributing source classes. We consider individual subclasses of radio-loud AGN, including low-, intermediate-, and high-synchrotron-peaked BL Lacertae objects, flat-spectrum radio quasars, and misaligned AGN. Using updated models of the ?-ray luminosity functions of these populations, we evaluate the energy-dependent contribution of each source class to the intensity and anisotropy of the IGRB. We find that collectively radio-loud AGN can account for the entirety of the IGRB intensity and anisotropy as measured by the Fermi Large Area Telescope (LAT). Misaligned AGN provide the bulk of the measured intensity but a negligible contribution to the anisotropy, while high-synchrotron-peaked BL Lacertae objects provide the dominant contribution to the anisotropy. In anticipation of upcoming measurements with the Fermi-LAT and the forthcoming Cherenkov Telescope Array, we predict the anisotropy in the broader energy range that will be accessible to future observations.

  13. Effects of grazing intensity on soil carbon stocks following deforestation of a Hawaiian dry tropical forest

    E-Print Network [OSTI]

    Elmore, Andrew J.

    : carbon isotopes, elevation, Hawai'i, imaging spectroscopy, land-use change, pastures, remote sensing be addressed, future changes in ecosystem dynamics and atmospheric carbon dioxide cannot be easily predictedEffects of grazing intensity on soil carbon stocks following deforestation of a Hawaiian dry

  14. MODELLING THE VERTICAL WIND SPEED AND TURBULENCE INTENSITY PROFILES AT PROSPECTIVE OFFSHORE WIND FARM SITES

    E-Print Network [OSTI]

    Heinemann, Detlev

    MODELLING THE VERTICAL WIND SPEED AND TURBULENCE INTENSITY PROFILES AT PROSPECTIVE OFFSHORE WIND important for offshore wind energy utilisation are discussed and tested: Four models for the surface tested with data from the offshore field measurement Rdsand by extrapolating the measured 10 m wind

  15. MODELLING THE VERTICAL WIND SPEED AND TURBULENCE INTENSITY PROFILES AT PROSPECTIVE OFFSHORE WIND FARM SITES

    E-Print Network [OSTI]

    Heinemann, Detlev

    MODELLING THE VERTICAL WIND SPEED AND TURBULENCE INTENSITY PROFILES AT PROSPECTIVE OFFSHORE WIND for conditions important for offshore wind energy utilisation are compared and tested: Four models tested with data from the offshore field measurement Rdsand by extrapolating the measured 10 m wind

  16. On the Varieties of Clouds for Data Intensive Computing Robert L. Grossman

    E-Print Network [OSTI]

    Grossman, Robert

    On the Varieties of Clouds for Data Intensive Computing Robert L. Grossman University of Illinois and with the reliability of a data center. We distinguish between clouds that provide on-demand computing instances (such as Amazon's EC2 service) and clouds that provide on-demand computing capacity (such as provided by Hadoop

  17. 1407 Letters to the Editor 1407 merged sea lion uses intensity cues to localize under-

    E-Print Network [OSTI]

    Illinois at Urbana-Champaign, University of

    1407 Letters to the Editor 1407 merged sea lion uses intensity cues to localize under- water sound Pinnipeds,"in Studies of Captive Wild Animals. edited by H. Markowitz and V. Stevens(Nelson-Hail, Chicago. J. McGillandJ.P. Goldberg,"Pure-toneintensitydis- orimination and energy detection," J. Aeoust. SCc

  18. Lake Sediments as Archives of Recurrence Rates and Intensities of Past Flood Events

    E-Print Network [OSTI]

    Gilli, Adrian

    Lake Sediments as Archives of Recurrence Rates and Intensities of Past Flood Events Adrian Gilli is an expanding field as the damage potential of floods and flood-related processes is increasing of methods is employed using diverse biologic, geomorphic or geologic evidences to track past flood events

  19. Polarity and energetics of inner core lightning in three intense North Atlantic hurricanes

    E-Print Network [OSTI]

    Cummer, Steven A.

    Atlantic hurricanes Jeremy N. Thomas,1,2,3 Natalia N. Solorzano,1,3 Steven A. Cummer,4 and Robert H and energetics of lightning within 100 km of the centers (inner core regions) of North Atlantic hurricanes Emily important for hurricane intensity change forecasting. Additionally, we find that the majority of inner core

  20. Explaining Long-Run Changes in the Energy Intensity of the U.S. Economy

    E-Print Network [OSTI]

    Sue Wing, Ian.

    Recent events have revived interest in explaining the long-run changes in the energy intensity of the U.S. economy. We use a KLEM dataset for 35 industries over 39 years to decompose changes in the aggregate energy-GDP ...

  1. Generation of intense continuum extreme-ultraviolet radiation by many-cycle

    E-Print Network [OSTI]

    Loss, Daniel

    LETTERS Generation of intense continuum extreme-ultraviolet radiation by many-cycle laser fields P in ultrashort pulse engineering have recently led to the breakthroughs of the generation of attosecond (10-18 s) pulse trains17 and isolated pulses811 . Although trains of multiple pulses can be generated through

  2. Field and intensity correlations in amplifying random media Alexey Yamilov,1,

    E-Print Network [OSTI]

    Yamilov, Alexey

    functions CFs is fundamentally flawed. Theoretically, the spatial and spectral CFs are obtained by average configurations diverges, and so do the ensemble-averaged CFs. Experimen- tally, the divergence of laser intensity the nonlasing ones, thus they dominate the CFs. The width of spectral CFs is simply equal to the lasing mode

  3. Superconductivity-induced phonon anomalies in high-Tc superconductors: A Raman intensity study

    E-Print Network [OSTI]

    Sipe,J. E.

    Superconductivity-induced phonon anomalies in high-Tc superconductors: A Raman intensity study O. V of a number of Raman-active phonons below the superconducting transition temperature in YBa2Cu3O7 x , Bi2Sr2Ca to obtain information about the superconducting state.4 Several years ago, Friedl et al.5 ob- served

  4. Title of Dissertation: NONLINEAR DYNAMICS OF EXTENDED SYSTEMS: CHAOS FRONTS, RARE INTENSE EVENTS,

    E-Print Network [OSTI]

    Anlage, Steven

    ABSTRACT Title of Dissertation: NONLINEAR DYNAMICS OF EXTENDED SYSTEMS: CHAOS FRONTS, RARE INTENSE Edward Ott Department of Physics We investigate the nonlinear dynamics of three extended systems: chaos considered as nodes and actors as links. #12;NONLINEAR DYNAMICS OF EXTENDED SYSTEMS: CHAOS FRONTS, RARE

  5. Production of intense negative hydrogen beams with polarized nuclei by selective neutralization of cold negative ions

    DOE Patents [OSTI]

    Hershcovitch, A.

    1984-02-13

    A process for selectively neutralizing H/sup -/ ions in a magnetic field to produce an intense negative hydrogen ion beam with spin polarized protons. Characteristic features of the process include providing a multi-ampere beam of H/sup -/ ions that are

  6. Degree of polarization and source counts of faint radio sources from Stacking Polarized intensity

    SciTech Connect (OSTI)

    Stil, J. M.; George, S. J.; Keller, B. W.; Taylor, A. R.

    2014-06-01

    We present stacking polarized intensity as a means to study the polarization of sources that are too faint to be detected individually in surveys of polarized radio sources. Stacking offers not only high sensitivity to the median signal of a class of radio sources, but also avoids a detection threshold in polarized intensity, and therefore an arbitrary exclusion of sources with a low percentage of polarization. Correction for polarization bias is done through a Monte Carlo analysis and tested on a simulated survey. We show that the nonlinear relation between the real polarized signal and the detected signal requires knowledge of the shape of the distribution of fractional polarization, which we constrain using the ratio of the upper quartile to the lower quartile of the distribution of stacked polarized intensities. Stacking polarized intensity for NRAO VLA Sky Survey (NVSS) sources down to the detection limit in Stokes I, we find a gradual increase in median fractional polarization that is consistent with a trend that was noticed before for bright NVSS sources, but is much more gradual than found by previous deep surveys of radio polarization. Consequently, the polarized radio source counts derived from our stacking experiment predict fewer polarized radio sources for future surveys with the Square Kilometre Array and its pathfinders.

  7. A reduced voltage polarization intensity electrooptic modulator in SBN:60 utilizing a step strain waveguide

    E-Print Network [OSTI]

    Ottinger, Tina Lynette

    1997-01-01

    . Electrooptic modulation via the linear electrooptic effect has been demonstrated by polarization intensity modulation at 0.633 gm wavelength in both substrates. LiNbo3 devices require a v,, of 10.75 V for a Tc-radian phase shift. SBN devices require a voltage...

  8. Adaptive control of input field to achieve desired output intensity profile in

    E-Print Network [OSTI]

    Kahn, Joseph M.

    Adaptive control of input field to achieve desired output intensity profile in multimode fiber fiber (MMF) with random mode coupling by controlling the input field distribution using a spatial light objective function. We present an adaptive sequential coordinate ascent (SCA) algorithm for controlling

  9. Revised: 6 November 1991 Trends in the Consumption of Energy-Intensive Basic Materials

    E-Print Network [OSTI]

    materials consumption patterns on energy use is the recognition that physical units (kilograms) are moreRevised: 6 November 1991 Trends in the Consumption of Energy-Intensive Basic Materials. 1. INTRODUCTION} Industry accounts for 50% of total energy use in developing countries

  10. Journal of Philosophy, Inc. A Note on Extension, Intension, and Truth

    E-Print Network [OSTI]

    Belnap, Nuel

    Journal of Philosophy, Inc. A Note on Extension, Intension, and Truth Author(s): Anil Gupta and Nuel Belnap Source: The Journal of Philosophy, Vol. 84, No. 3 (Mar., 1987), pp. 168-174 Published by: Journal of Philosophy, Inc. Stable URL: http://www.jstor.org/stable/2026597 Accessed: 28/05/2009 11

  11. An Economy-based Algorithm for Scheduling Data-Intensive Applications on Global Grids

    E-Print Network [OSTI]

    Buyya, Rajkumar

    An Economy-based Algorithm for Scheduling Data-Intensive Applications on Global Grids Srikumar suggested a computational economy metaphor for resource management within compute and data grids. However, the issue of scheduling jobs that require distributed data within an economy-based data grid has not been

  12. Intense plasma waves at and near the solar wind termination shock

    E-Print Network [OSTI]

    Gurnett, Donald A.

    LETTERS Intense plasma waves at and near the solar wind termination shock D. A. Gurnett1 & W. S wind termination shock. The observations were obtained from the plasma-wave instrument on the Voyager 2 a series of crossings of the termination shock at a heliocentric radial distance of 83.7 AU. The spectrum

  13. Mul$-scale Demand-Side Management for Con$nuous Power-intensive Processes

    E-Print Network [OSTI]

    Grossmann, Ignacio E.

    1 Mul$-scale Demand-Side Management for Con$nuous Power-intensive Processes-dependent) Load Informa(on Electricity ((me-dependent) Load Informa(on Transmission, Distribu Response Energy Efficiency Demand-Side Management (DSM)1 Integra

  14. Multi-scale Demand-Side Management for Continuous Power-intensive Processes

    E-Print Network [OSTI]

    Grossmann, Ignacio E.

    , with an emphasis on price responsive programs", CRA No. D06090, Technical report, The World Bank. Electricity (time-intensive industries for electricity markets in Germany. Applied Energy, 88:432441, 2011. Industrial DSM decreased Stochastic Operational Strategic (design)Single plant Robust schedules w.r.t. electricity prices - FOCAPO

  15. Systems for controlling the intensity variations in a laser beam and for frequency conversion thereof

    DOE Patents [OSTI]

    Skupsky, S.; Craxton, R.S.; Soures, J.

    1990-10-02

    In order to control the intensity of a laser beam so that its intensity varies uniformly and provides uniform illumination of a target, such as a laser fusion target, a broad bandwidth laser pulse is spectrally dispersed spatially so that the frequency components thereof are spread apart. A disperser (grating) provides an output beam which varies spatially in wavelength in at least one direction transverse to the direction of propagation of the beam. Temporal spread (time delay) across the beam is corrected by using a phase delay device (a time delay compensation echelon). The dispersed beam may be amplified with laser amplifiers and frequency converted (doubled, tripled or quadrupled in frequency) with nonlinear optical elements (birefringent crystals). The spectral variation across the beam is compensated by varying the angle of incidence on one of the crystals with respect to the crystal optical axis utilizing a lens which diverges the beam. Another lens after the frequency converter may be used to recollimate the beam. The frequency converted beam is recombined so that portions of different frequency interfere and, unlike interference between waves of the same wavelength, there results an intensity pattern with rapid temporal oscillations which average out rapidly in time thereby producing uniform illumination on target. A distributed phase plate (also known as a random phase mask), through which the spectrally dispersed beam is passed and then focused on a target, is used to provide the interference pattern which becomes nearly modulation free and uniform in intensity in the direction of the spectral variation. 16 figs.

  16. Effect of pulse intensity distributions on fragment internal energy in the infrared multiphoton dissociation of vinyl

    E-Print Network [OSTI]

    Effect of pulse intensity distributions on fragment internal energy in the infrared multiphoton the rovibra- tional energy distributions of fragmentsl formed in the infrared multiphoton dissociation (IRMPD energies of the frag- ment can be well characterized in terms of a Boltzmann distribution with a single

  17. Operation of the DC current transformer intensity monitors at FNAL during run II

    SciTech Connect (OSTI)

    Crisp, J.; Fellenz, B.; Heikkinen, D.; Ibrahim, M.A.; Meyer, T.; Vogel, G.; /Fermilab

    2012-01-01

    Circulating beam intensity measurements at FNAL are provided by five DC current transformers (DCCT), one per machine. With the exception of the DCCT in the Recycler, all DCCT systems were designed and built at FNAL. This paper presents an overview of both DCCT systems, including the sensor, the electronics, and the front-end instrumentation software, as well as their performance during Run II.

  18. Temporary Acceleration of Electrons While Inside an Intense Electromagnetic Pulse Kirk T. McDonald

    E-Print Network [OSTI]

    McDonald, Kirk

    Temporary Acceleration of Electrons While Inside an Intense Electromagnetic Pulse Kirk T. Mc. In tense electromagnetic pulses of astrophysical origin can lead to very energetic photons via potential'' associated with the envelope of the electromagnetic pulse [3]. The resulting temporary energy

  19. Temporary Acceleration of Electrons While Inside an Intense Electromagnetic Pulse Kirk T. McDonald

    E-Print Network [OSTI]

    McDonald, Kirk

    Temporary Acceleration of Electrons While Inside an Intense Electromagnetic Pulse Kirk T. Mc. In- tense electromagnetic pulses of astrophysical origin can lead to very energetic photons via of the electromagnetic pulse [3]. The resulting temporary energy transfer to the longitudinal motion of the electron can

  20. Magnetic Propulsion of Intense Lithium Streams in a Tokamak Magnetic Field

    E-Print Network [OSTI]

    Zakharov, Leonid E.

    Magnetic Propulsion of Intense Lithium Streams in a Tokamak Magnetic Field Leonid E. Zakharov the theory of magnetic propulsion of liquid lithium streams and their stability in tokamaks takes into account the propulsion e#11;ect, viscosity and the drag force due to magnetic pumping

  1. Ultrahigh-Intensity Optical Slow-Wave Structure B. D. Layer,1,3

    E-Print Network [OSTI]

    Milchberg, Howard

    current laser energy and side leakage. Hydrogen and argon plasma wave- guides up to 1.5 cm in lengthUltrahigh-Intensity Optical Slow-Wave Structure B. D. Layer,1,3 A. York,1,3 T. M. Antonsen,2,3 S and Technology, University of Maryland, College Park, Maryland 20742, USA 2 Department of Electrical and Computer

  2. Impact of Low-Level Jets on the Nocturnal Urban Heat Island Intensity in Oklahoma City

    E-Print Network [OSTI]

    Xue, Ming

    Impact of Low-Level Jets on the Nocturnal Urban Heat Island Intensity in Oklahoma City XIAO-MING HU Center for Analysis and Prediction of Storms, University of Oklahoma, Norman, Oklahoma PETRA M. KLEIN AND MING XUE Center for Analysis and Prediction of Storms and School of Meteorology, University of Oklahoma

  3. High-Level Fusion of Depth and Intensity for Pedestrian Classification

    E-Print Network [OSTI]

    Gavrila, Dariu M.

    High-Level Fusion of Depth and Intensity for Pedestrian Classification Marcus Rohrbach1,3 , Markus. This paper presents a novel approach to pedestrian classi- fication which involves a high-level fusion pedestrians and non-pedestrians. We refrain from the construction of a joint feature space, but instead employ

  4. Idaho Habitat/Natural Production Monitoring, Part II: Intensive Monitoring Subproject : Annual Progress Report 1990.

    SciTech Connect (OSTI)

    Kiefer, Russell B.; Forster, Katharine A.

    1992-04-01

    Project 83-7 was established under the Northeast Power Planning Council's 1982 Fish and Wildlife Program, Measure 704 (d) (1) to monitor natural production of anadromous fish, evaluate Bonneville Power Administration habitat improvement project, and develop a credit record for off-site mitigation projects in Idaho. Project 83-7 is divided into two sub-projects: general and intensive monitoring. Results of the intensive monitoring sub-project are reported here. Results from the general monitoring sub-project will be reported in a separate document. The purpose of this intensive monitoring project is to determine the number of returning chinook and steelhead adults necessary to achieve optimal smolt production, and develop mitigation accounting based on increases in smolt production. Two locations are being intensively studied to meet these objectives. Information from this research will be applied to parr monitoring streams statewide to develop escapement objectives and determine success of habitat enhancement projects. Field work began in 1987 in upper Salmon River and Crooked River (South Fork Clearwater River tributary). Methods include using weirs to trap adults, conducting ground and aerial redd counts, snorkeling to estimate parr populations, PIT-tagging juveniles to determine parr-tosmolt survival, trapping fall and spring downstream emigrants with scoop traps, and outplanting adults to determine juvenile carrying capacity. PIT tags also provide a wide range of other information such as migration timing, effects of flow and passage conditions on smolt survival, other factors affecting smolt survival, and growth.

  5. Real Time Biomedical Data Streaming Platform (RIMES): a data-intensive virtual environment

    E-Print Network [OSTI]

    Schulze, Jrgen P.

    Real Time Biomedical Data Streaming Platform (RIMES): a data-intensive virtual environment Kejun@ucsd.edu Abstract - In this paper we present Real tIme bioMEdical data Streaming platform (RIMES), a data of California, San Diego. RIMES extends scientists' desktops to biomedical grid computation resources and mass

  6. U.S. Greenhouse Gas Intensity and the Global Climate Change Initiative (released in AEO2006)

    Reports and Publications (EIA)

    2006-01-01

    On February 14, 2002, President Bush announced the Administrations Global Climate Change Initiative. A key goal of the Climate Change Initiative is to reduce U.S. greenhouse gas (GHG) intensity-defined as the ratio of total U.S. GHG emissions to economic output-by 18% over the 2002 to 2012 time frame.

  7. Intense red upconversion luminescence from Tm3Yb3 codoped transparent glass ceramic

    E-Print Network [OSTI]

    Cao, Wenwu

    Intense red upconversion luminescence from Tm3Yb3 codoped transparent glass ceramic Wei Xu,1 (Doc. ID 158093); published January 12, 2012 Tm3Yb3 codoped transparent glass ceramic containing -PbF2 choose the oxyfluoride glass ceramic as the host material in our investigations. Through thermal treat

  8. Are ceramics and bricks reliable absolute geomagnetic intensity carriers? Juan Morales a,

    E-Print Network [OSTI]

    Cattin, Rodolphe

    Are ceramics and bricks reliable absolute geomagnetic intensity carriers? Juan Morales a, , Avto performed on the raw material (clay and paste) and on in situ prepared baked ceramics and bricks included indicate a mixture of multi- domain and a significant amount of single-domain grains. Ceramic pieces

  9. Effect of initial turbulence intensity and velocity profile on liquid jets for IFE beamline protection

    E-Print Network [OSTI]

    Abdou, Mohamed

    Effect of initial turbulence intensity and velocity profile on liquid jets for IFE beamline ion inertial fusion reactors utilize banks of liquid jets and vortex flow tubes to protect sensitive observations and quantitative data for rectangular and circular jets are compared in an effort to illuminate

  10. Effect of initial turbulence intensity and velocity profile on liquid jets for IFE beamline protection

    E-Print Network [OSTI]

    California at Los Angeles, University of

    Effect of initial turbulence intensity and velocity profile on liquid jets for IFE beamline reactors utilize banks of liquid jets and vortex flow tubes to protect sensitive beam line components from for rectangular and circular jets are compared in an effort to illuminate the critical phenomena involved

  11. Experiences with Applying STPA to Software-Intensive Systems in the Automotive

    E-Print Network [OSTI]

    Wagner, Stefan

    Experiences with Applying STPA to Software-Intensive Systems in the Automotive Domain Asim in the automotive industries: Adaptive Cruise Control (ACC). The results of the application of STPA to our case can result in accidents. Safety critical-systems are increasingly used in the automotive industry

  12. Industrial Technologies Program Research Plan for Energy-Intensive Process Industries

    SciTech Connect (OSTI)

    Chapas, Richard B.; Colwell, Jeffery A.

    2007-10-01

    In this plan, the Industrial Technologies Program (ITP) identifies the objectives of its cross-cutting strategy for conducting research in collaboration with industry and U.S. Department of Energy national laboratories to develop technologies that improve the efficiencies of energy-intensive process industries.

  13. Present and future perspectives for high energy density physics with intense heavy ion and laser beams

    E-Print Network [OSTI]

    , Germany! accelerator facilities, together with two high energy laser systems: petawatt high energy laserPresent and future perspectives for high energy density physics with intense heavy ion and laser!, Plasmaphysik, Darmstadt, Germany 2 Institut fr Kernphysik, Technische Universitt Darmstadt, Darmstadt

  14. P1.26 ROLE OF WARM OCEAN FEATURES ON INTENSITY CHANGE: HURRICANE OPAL

    E-Print Network [OSTI]

    P1.26 ROLE OF WARM OCEAN FEATURES ON INTENSITY CHANGE: HURRICANE OPAL Lynn K. Shay, Gustavo J. Goni elds during hurricane Opal. 2. HURRICANE OPAL As shown in Fig. 1a., the passage of hurricane Opal, hurricane Opal moved over a warm core eddy detected by the altimeter onboard the NASA oceanographic TOPogra

  15. JETS: intense circulations in atmospheres and ocean OC569c Spring 2008

    E-Print Network [OSTI]

    1 JETS: intense circulations in atmospheres and ocean OC569c Spring 2008 Room 211 Ocean Teaching.ocean.washington.edu/research/gfd Outline a look at the extratropical jet stream with synoptic data: transport, energy, vertical structure or veering with height) the Hadley cell and its limited size oceanic jets and boundary currents Why

  16. Seismic Intensity Estimation of Tall Buildings in Earthquake Early Warning System

    E-Print Network [OSTI]

    Greer, Julia R.

    prediction equation (GMPE) that predicts response spectral amplitude from knowledge of earthquake magnitudeSeismic Intensity Estimation of Tall Buildings in Earthquake Early Warning System M. H. Cheng & T. W. Graves U.S. Geological Survey, USA SUMMARY: In California, United States, an earthquake early

  17. Regulation of GHG emissions from transportation fuels: Emission quota versus emission intensity standard

    E-Print Network [OSTI]

    Rajagopal, Deepak

    2010-01-01

    relative to coal than base case IV: Transportation cost isCoal-based ethanol pro- 0.430 duction cost ($/liter) Ethanol transportation 0.050 cost -transportation 0.130 cost - road ($/liter) Energy used in biore?ning 13.85 (MJ/liter) GHG intensity of coal-

  18. Energy use and energy intensity of the U.S. chemical industry

    SciTech Connect (OSTI)

    Worrell, E.; Phylipsen, D.; Einstein, D.; Martin, N.

    2000-04-01

    The U.S. chemical industry is the largest in the world, and responsible for about 11% of the U.S. industrial production measured as value added. It consumes approximately 20% of total industrial energy consumption in the U.S. (1994), and contributes in similar proportions to U.S. greenhouse gas emissions. Surprisingly, there is not much information on energy use and energy intensity in the chemical industry available in the public domain. This report provides detailed information on energy use and energy intensity for the major groups of energy-intensive chemical products. Ethylene production is the major product in terms of production volume of the petrochemical industry. The petrochemical industry (SIC 2869) produces a wide variety of products. However, most energy is used for a small number of intermediate compounds, of which ethylene is the most important one. Based on a detailed assessment we estimate fuel use for ethylene manufacture at 520 PJ (LHV), excluding feedstock use. Energy intensity is estimated at 26 GJ/tonne ethylene (LHV), excluding feedstocks.The nitrogenous fertilizer production is a very energy intensive industry, producing a variety of fertilizers and other nitrogen-compounds. Ammonia is the most important intermediate chemical compound, used as basis for almost all products. Fuel use is estimated at 268 PJ (excluding feedstocks) while 368 PJ natural gas is used as feedstock. Electricity consumption is estimated at 14 PJ. We estimate the energy intensity of ammonia manufacture at 39.3 GJ/tonne (including feedstocks, HHV) and 140 kWh/tonne, resulting in a specific primary energy consumption of 40.9 GJ/tonne (HHV), equivalent to 37.1 GJ/tonne (LHV). Excluding natural gas use for feedstocks the primary energy consumption is estimated at 16.7 GJ/tonne (LHV). The third most important product from an energy perspective is the production of chlorine and caustic soda. Chlorine is produced through electrolysis of a salt-solution. Chlorine production is the main electricity consuming process in the chemical industry, next to oxygen and nitrogen production. We estimate final electricity use at 173 PJ (48 TWh) and fuel use of 38 PJ. Total primary energy consumption is estimated at 526 PJ (including credits for hydrogen export). The energy intensity is estimated at an electricity consumption of 4380 kWh/tonne chlorine and fuel consumption of 3.45 GJ/tonne chlorine, where all energy use is allocated to chlorine production. Assuming an average power generation efficiency of 33% the primary energy consumption is estimated at 47.8 GJ/tonne chlorine (allocating all energy use to chlorine).

  19. Target Allocation Methodology for China's Provinces: Energy Intensity in the 12th FIve-Year Plan

    SciTech Connect (OSTI)

    Ohshita, Stephanie; Price, Lynn

    2011-03-21

    Experience with China's 20% energy intensity improvement target during the 11th Five-Year Plan (FYP) (2006-2010) has shown the challenges of rapidly setting targets and implementing measures to meet them. For the 12th FYP (2011-2015), there is an urgent need for a more scientific methodology to allocate targets among the provinces and to track physical and economic indicators of energy and carbon saving progress. This report provides a sectoral methodology for allocating a national energy intensity target - expressed as percent change in energy per unit gross domestic product (GDP) - among China's provinces in the 12th FYP. Drawing on international experience - especially the European Union (EU) Triptych approach for allocating Kyoto carbon targets among EU member states - the methodology here makes important modifications to the EU approach to address an energy intensity rather than a CO{sub 2} emissions target, and for the wider variation in provincial energy and economic structure in China. The methodology combines top-down national target projections and bottom-up provincial and sectoral projections of energy and GDP to determine target allocation of energy intensity targets. Total primary energy consumption is separated into three end-use sectors - industrial, residential, and other energy. Sectoral indicators are used to differentiate the potential for energy saving among the provinces. This sectoral methodology is utilized to allocate provincial-level targets for a national target of 20% energy intensity improvement during the 12th FYP; the official target is determined by the National Development and Reform Commission. Energy and GDP projections used in the allocations were compared with other models, and several allocation scenarios were run to test sensitivity. The resulting allocations for the 12th FYP offer insight on past performance and offer somewhat different distributions of provincial targets compared to the 11th FYP. Recommendations for reporting and monitoring progress on the targets, and methodology improvements, are included.

  20. World Best Practice Energy Intensity Values for SelectedIndustrial Sectors

    SciTech Connect (OSTI)

    Worrell, Ernst; Price, Lynn; Neelis, Maarten; Galitsky,Christina; Zhou, Nan

    2007-06-05

    "World best practice" energy intensity values, representingthe most energy-efficient processes that are in commercial use in atleast one location worldwide, are provided for the production of iron andsteel, aluminium, cement, pulp and paper, ammonia, and ethylene. Energyintensity is expressed in energy use per physical unit of output for eachof these commodities; most commonly these are expressed in metric tonnes(t). The energy intensity values are provided by major energy-consumingprocesses for each industrial sector to allow comparisons at the processlevel. Energy values are provided for final energy, defined as the energyused at the production facility as well as for primary energy, defined asthe energy used at the production facility as well as the energy used toproduce the electricity consumed at the facility. The "best practice"figures for energy consumption provided in this report should beconsidered as indicative, as these may depend strongly on the materialinputs.