National Library of Energy BETA

Sample records for optic 3c receiver

  1. Development and Test of a 1,000 Level 3C Fiber Optic Borehole Seismic Receiver Array Applied to Carbon Sequestration

    SciTech Connect (OSTI)

    Paulsson, Bjorn N.P.

    2015-02-28

    To address the critical site characterization and monitoring needs for CCS programs, US Department of Energy (DOE) awarded Paulsson, Inc. in 2010 a contract to design, build and test a fiber optic based ultra-large bandwidth clamped borehole seismic vector array capable of deploying up to one thousand 3C sensor pods suitable for deployment into high temperature and high pressure boreholes. Paulsson, Inc. has completed a design or a unique borehole seismic system consisting of a novel drill pipe based deployment system that includes a hydraulic clamping mechanism for the sensor pods, a new sensor pod design and most important – a unique fiber optic seismic vector sensor with technical specifications and capabilities that far exceed the state of the art seismic sensor technologies. These novel technologies were all applied to the new borehole seismic system. In combination these technologies will allow for the deployment of up to 1,000 3C sensor pods in vertical, deviated or horizontal wells. Laboratory tests of the fiber optic seismic vector sensors developed during this project have shown that the new borehole seismic sensor technology is capable of generating outstanding high vector fidelity data with extremely large bandwidth: 0.01 – 6,000 Hz. Field tests have shown that the system can record events at magnitudes much smaller than M-2.3 at frequencies up to 2,000 Hz. The sensors have also proved to be about 100 times more sensitive than the regular coil geophones that are used in borehole seismic systems today. The fiber optic seismic sensors have furthermore been qualified to operate at temperatures over 300°C (572°F). The fibers used for the seismic sensors in the system are used to record Distributed Temperature Sensor (DTS) data allowing additional value added data to be recorded simultaneously with the seismic vector sensor data.

  2. Optical Metrology Lab Receives New Funding for Upgrades

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

    Optical Metrology Lab Receives New Funding for Upgrades Optical Metrology Lab Receives New Funding for Upgrades Print The Optical Metrology Lab (OML) at the ALS is renowned for its precision and technical expertise in metrology of x-ray optics. It has achieved this notoriety with only two full-time staff members and extremely limited laboratory facilities. Now, with new funding from the DOE that provides $1.2M to build a new clean room laboratory with environmental controls, and the promise of

  3. Development of a 400 Level 3C Clamped Downhole Seismic Receiver Array for 3D Borehole Seismic Imaging of Gas Reservoirs

    SciTech Connect (OSTI)

    Bjorn N. P. Paulsson

    2006-09-30

    Borehole seismology is the highest resolution geophysical imaging technique available today to the oil and gas industry for characterization and monitoring of oil and gas reservoirs. However, the industry's ability to perform high resolution 3D imaging of deep and complex gas reservoirs using borehole seismology has been hampered by the lack of acquisition technology necessary to record large volumes of high frequency, high signal-to-noise-ratio borehole seismic data. This project took aim at this shortcoming by developing a 400 level 3C clamped downhole seismic receiver array, and accompanying software, for borehole seismic 3D imaging. This large borehole seismic array has removed the technical acquisition barrier for recording the data volumes necessary to do high resolution 3D VSP and 3D cross-well seismic imaging. Massive 3D VSP{reg_sign} and long range Cross-Well Seismology (CWS) are two of the borehole seismic techniques that promise to take the gas industry to the next level in their quest for higher resolution images of deep and complex oil and gas reservoirs. Today only a fraction of the oil or gas in place is produced when reservoirs are considered depleted. This is primarily due to our lack of understanding of detailed compartmentalization of oil and gas reservoirs. In this project, we developed a 400 level 3C borehole seismic receiver array that allows for economic use of 3D borehole seismic imaging for reservoir characterization and monitoring. This new array has significantly increased the efficiency of recording large data volumes at sufficiently dense spatial sampling to resolve reservoir complexities. The receiver pods have been fabricated and tested to withstand high temperature (200 C/400 F) and high pressure (25,000 psi), so that they can operate in wells up to 7,620 meters (25,000 feet) deep. The receiver array is deployed on standard production or drill tubing. In combination with 3C surface seismic or 3C borehole seismic sources, the 400

  4. Optical Metrology Lab Receives New Funding for Upgrades

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

    Optical Metrology Lab Receives New Funding for Upgrades Print The Optical Metrology Lab (OML) at the ALS is renowned for its precision and technical expertise in metrology of x-ray optics. It has achieved this notoriety with only two full-time staff members and extremely limited laboratory facilities. Now, with new funding from the DOE that provides $1.2M to build a new clean room laboratory with environmental controls, and the promise of $1.4M to upgrade and replace outdated instrumentation,

  5. Optical Metrology Lab Receives New Funding for Upgrades

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

    Optical Metrology Lab Receives New Funding for Upgrades Print The Optical Metrology Lab (OML) at the ALS is renowned for its precision and technical expertise in metrology of x-ray optics. It has achieved this notoriety with only two full-time staff members and extremely limited laboratory facilities. Now, with new funding from the DOE that provides $1.2M to build a new clean room laboratory with environmental controls, and the promise of $1.4M to upgrade and replace outdated instrumentation,

  6. Optical Metrology Lab Receives New Funding for Upgrades

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

    Profiler (DLTP) is a new surface slope measuring instrument demonstrating state-of-the-art 80 nano radians (rms) performance in measurements with a 1280 spherical optic. The...

  7. Optical Metrology Lab Receives New Funding for Upgrades

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

    at the ALS is renowned for its precision and technical expertise in metrology of x-ray optics. It has achieved this notoriety with only two full-time staff members and extremely...

  8. A Change in the Optical Polarization Associated with a Gamma-Ray Flare in the Blazar 3C 279

    SciTech Connect (OSTI)

    Abdo, A.A.

    2011-08-19

    It is widely accepted that strong and variable radiation detected over all accessible energy bands in a number of active galaxies arises from a relativistic, Doppler-boosted jet pointing close to our line of sight. The size of the emitting zone and the location of this region relative to the central supermassive black hole are, however, poorly known, with estimates ranging from light-hours to a light-year or more. Here we report the coincidence of a gamma ({gamma})-ray flare with a dramatic change of optical polarization angle. This provides evidence for co-spatiality of optical and {gamma}-ray emission regions and indicates a highly ordered jet magnetic field. The results also require a non-axisymmetric structure of the emission zone, implying a curved trajectory for the emitting material within the jet, with the dissipation region located at a considerable distance from the black hole, at about 10{sup 5} gravitational radii.

  9. Measuring the Optical Performance of Evacuated Receivers via an Outdoor Thermal Transient Test: Preprint

    SciTech Connect (OSTI)

    Kutscher, C.; Burkholder, F.; Netter, J.

    2011-08-01

    Modern parabolic trough solar collectors operated at high temperatures to provide the heat input to Rankine steam power cycles employ evacuated receiver tubes along the collector focal line. High performance is achieved via the use of a selective surface with a high absorptance for incoming short-wave solar radiation and a low emittance for outgoing long-wave infrared radiation, as well as the use of a hard vacuum to essentially eliminate convective and conductive heat losses. This paper describes a new method that determines receiver overall optical efficiency by exposing a fluid-filled, pre-cooled receiver to one sun outdoors and measuring the slope of the temperature curve at the point where the receiver temperature passes the glass envelope temperature (that is, the point at which there is no heat gain or loss from the absorber). This transient test method offers the potential advantages of simplicity, high accuracy, and the use of the actual solar spectrum.

  10. ARM - Instrument - mwr3c

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

    govInstrumentsmwr3c Documentation MWR3C : Handbook ARM Data Discovery Browse Data Comments? We would love to hear from you Send us a note below or call us at 1-888-ARM-DATA. Send...

  11. (w3c-wot)

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

    Standards Potential for The Web of Things Wendy Seltzer wseltzer@w3.org World Wide Web Consortium (W3C) 1 May 2014 WWW, circa 1989 Web25TH ANNIUERSARY W3C World Wide Web ...

  12. ARM - Datastreams - mwr3c

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

    Datastreamsmwr3c Documentation Data Quality Plots Citation DOI: 10.5439/1025248 [ What is this? ] Generate Citation ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Datastream : MWR3C Microwave Radiometer, 3 Channel Active Dates 2011.01.11 - 2016.09.02 Measurement Categories Atmospheric State, Cloud Properties, Radiometric Originating Instrument Microwave Radiometer, 3 Channel (MWR3C) Measurements Only measurements

  13. Generation of a Parabolic Trough Collector Efficiency Curve from Separate Measurements of Outdoor Optical Efficiency and Indoor Receiver Heat Loss

    SciTech Connect (OSTI)

    Kutscher, C.; Burkholder, F.; Stynes, J. K.

    2012-02-01

    The thermal efficiency of a parabolic trough collector is a function of both the fraction of direct normal radiation absorbed by the receiver (the optical efficiency) and the heat lost to the environment when the receiver is at operating temperature. The thermal efficiency can be determined by testing the collector under actual operating conditions or by separately measuring these two components. This paper describes how outdoor measurement of the optical efficiency is combined with laboratory measurements of receiver heat loss to obtain the thermal efficiency curve. This paper describes this approach and also makes the case that there are advantages to plotting collector efficiency versus the difference between the operating temperature and the ambient temperature at which the receiver heat loss was measured divided by radiation to a fractional power (on the order of 1/3 but obtained via data regression) - as opposed to the difference between operating and ambient temperatures divided by the radiation. The results are shown to be robust over wide ranges of ambient temperature, sky temperature, and wind speed.

  14. Generation of a Parabolic Trough Collector Efficiency Curve from Separate Measurements of Outdoor Optical Efficiency and Indoor Receiver Heat Loss: Preprint

    SciTech Connect (OSTI)

    Kutscher, C.; Burkholder, F.; Stynes, K.

    2010-10-01

    The overall efficiency of a parabolic trough collector is a function of both the fraction of direct normal radiation absorbed by the receiver (the optical efficiency) and the heat lost to the environment when the receiver is at operating temperature. The overall efficiency can be determined by testing the collector under actual operating conditions or by separately measuring these two components. This paper describes how outdoor measurement of the optical efficiency is combined with laboratory measurements of receiver heat loss to obtain an overall efficiency curve. Further, it presents a new way to plot efficiency that is more robust over a range of receiver operating temperatures.

  15. 3C Holding AG | Open Energy Information

    Open Energy Info (EERE)

    am Main, Germany Zip: 61118 Sector: Services Product: 3C Holding AG develops trading strategies for EU allowances, JICDM Projects and climate neutral events, products...

  16. Coupled modeling of a directly heated tubular solar receiver for supercritical carbon dioxide Brayton cycle: Optical and thermal-fluid evaluation

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

    Ortega, Jesus; Khivsara, Sagar; Christian, Joshua; Ho, Clifford; Yellowhair, Julius; Dutta, Pradip

    2016-05-30

    In single phase performance and appealing thermo-physical properties supercritical carbon dioxide (s-CO2) make a good heat transfer fluid candidate for concentrating solar power (CSP) technologies. The development of a solar receiver capable of delivering s-CO2 at outlet temperatures ~973 K is required in order to merge CSP and s-CO2 Brayton cycle technologies. A coupled optical and thermal-fluid modeling effort for a tubular receiver is undertaken to evaluate the direct tubular s-CO2 receiver’s thermal performance when exposed to a concentrated solar power input of ~0.3–0.5 MW. Ray tracing, using SolTrace, is performed to determine the heat flux profiles on the receivermore » and computational fluid dynamics (CFD) determines the thermal performance of the receiver under the specified heating conditions. Moreover, an in-house MATLAB code is developed to couple SolTrace and ANSYS Fluent. CFD modeling is performed using ANSYS Fluent to predict the thermal performance of the receiver by evaluating radiation and convection heat loss mechanisms. Understanding the effects of variation in heliostat aiming strategy and flow configurations on the thermal performance of the receiver was achieved through parametric analyses. Finally, a receiver thermal efficiency ~85% was predicted and the surface temperatures were observed to be within the allowable limit for the materials under consideration.« less

  17. Coupled optical/thermal/fluid analysis and design requirements for operation and testing of a supercritical CO2 solar receiver.

    SciTech Connect (OSTI)

    Khivsara, Sagar

    2015-01-01

    Recent studies have evaluated closed-loop supercritical carbon dioxide (s-CO2) Brayton cycles to be a higher energy-density system in comparison to conventional superheated steam Rankine systems. At turbine inlet conditions of 923K and 25 MPa, high thermal efficiency (~50%) can be achieved. Achieving these high efficiencies will make concentrating solar power (CSP) technologies a competitive alternative to current power generation methods. To incorporate a s-CO2 Brayton power cycle in a solar power tower system, the development of a solar receiver capable of providing an outlet temperature of 923 K (at 25 MPa) is necessary. To satisfy the temperature requirements of a s-CO2 Brayton cycle with recuperation and recompression, it is required to heat s-CO2 by a temperature of ~200 K as it passes through the solar receiver. Our objective was to develop an optical-thermal-fluid model to design and evaluate a tubular receiver that will receive a heat input ~1 MWth from a heliostat field. We also undertook the documentation of design requirements for the development, testing and safe operation of a direct s-CO2 solar receiver. The main purpose of this document is to serve as a reference and guideline for design and testing requirements, as well as to address the technical challenges and provide initial parameters for the computational models that will be employed for the development of s-CO2 receivers.

  18. CALUTRON RECEIVER

    DOE Patents [OSTI]

    Barnes, S.W.

    1959-06-16

    An improved receiver and receiver mount for calutrons are described. The receiver can be manipulated from outside the tank by a single control to position it with respect to the beam. A door can be operated exteriorly also to prevent undesired portions of the beam from entering the receiver. The receiver has an improved pocket which is more selective in the ions collected. (T.R.H.)

  19. CALUTRON RECEIVERS

    DOE Patents [OSTI]

    Schmidt, F.H.; Stone, K.F.

    1958-09-01

    S>This patent relates to improvements in calutron devices and, more specifically, describes a receiver fer collecting the ion curreot after it is formed into a beam of non-homogeneous isotropic cross-section. The invention embodies a calutron receiver having an ion receiving pocket for separately collecting and retaining ions traveling in a selected portion of the ion beam and anelectrode for intercepting ions traveling in another selected pontion of the ion beam. The electrode is disposed so as to fix the limit of one side of the pontion of the ion beam admitted iato the ion receiving pocket.

  20. Energy Economic Environmental Consultants e3c | Open Energy Informatio...

    Open Energy Info (EERE)

    search Name: Energy Economic & Environmental Consultants (e3c) Place: Albuquerque, New Mexico Zip: 87111 Sector: Services Product: E3c, Inc. has provided economic consulting...

  1. CALUTRON RECEIVERS

    DOE Patents [OSTI]

    MacKenzie, K.R.

    1958-09-16

    A novel calutron receiver is described for collecting the constituent material of two closely adjacent selected portions of an ion beam in separate compartments. The receiver is so conntructed that ion scatter and intermixing of the closely adjacent beam portions do nnt occur when the ions strike the receiver structure, and the beam is sharply separated Into the two compartments. In essence, these desirable results are achieved by inclining the adjoining wall of one compartment with respect to the approaching ions to reduce possible rebounding of ions from the compartment into the adjacent compartment.

  2. Investigations of radio jets in M87, 3C273, and 3C345

    SciTech Connect (OSTI)

    Biretta, J.A.

    1986-01-01

    Observational studies of extra-galactic radio jets in M87, 3C273, and 3C345 are presented. Observations of the M87 jet were made at 15 GHz with 0.12'' resolution. All of the knots are clearly resolved both along and across the jet. Most of the knots are found to be smooth in appearance with no evidence of shocklike discontinuities. The brightest knot and the innermost knot are exceptions to this. The brightest knot (knot A) seems consistent with a shock caused by unsteady flow in the jet. Models for this feature are discussed. Combining these data with x-ray data suggests that the jet is neither freely expanding, thermally confined, nor ram-pressure confined. The jet may, however, be magnetically confined. The author presents 10.7 GHz VLBI observations of 3C273 with high north-south resolution. A strong, nonmonotonic curvature is found in the jet at projected radii less than or equal to 5 pc. It is unlikely that this curvature can be caused by precession. Measurements of the core size show that bulk relativistic motion in the core is not required for consistency with the observed x-ray flux.

  3. CALUTRON RECEIVER

    DOE Patents [OSTI]

    Barnes, S.W.

    1959-08-25

    An improvement in a calutron receiver for collecting the isotopes ts described. The electromagnetic separation of the isotopes produces a mass spectrum of closely adjacent beams of ions at the foci regions, and a dividing wall between the two pockets is arranged at an angle. Substantially all of the tons of the less abundant isotope enter one of the pockets and strike one side of the wall directly, while substantially none of the tons entering the other pocket strikes the wall directly.

  4. Radiation receiver

    DOE Patents [OSTI]

    Hunt, Arlon J.

    1983-01-01

    The apparatus for collecting radiant energy and converting same to alternate energy form includes a housing having an interior space and a radiation transparent window allowing, for example, solar radiation to be received in the interior space of the housing. Means are provided for passing a stream of fluid past said window and for injecting radiation absorbent particles in said fluid stream. The particles absorb the radiation and because of their very large surface area, quickly release the heat to the surrounding fluid stream. The fluid stream particle mixture is heated until the particles vaporize. The fluid stream is then allowed to expand in, for example, a gas turbine to produce mechanical energy. In an aspect of the present invention properly sized particles need not be vaporized prior to the entrance of the fluid stream into the turbine, as the particles will not damage the turbine blades. In yet another aspect of the invention, conventional fuel injectors are provided to inject fuel into the fluid stream to maintain the proper temperature and pressure of the fluid stream should the source of radiant energy be interrupted. In yet another aspect of the invention, an apparatus is provided which includes means for providing a hot fluid stream having hot particles disbursed therein which can radiate energy, means for providing a cooler fluid stream having cooler particles disbursed therein, which particles can absorb radiant energy and means for passing the hot fluid stream adjacent the cooler fluid stream to warm the cooler fluid and cooler particles by the radiation from the hot fluid and hot particles.

  5. Radiation receiver

    DOE Patents [OSTI]

    Hunt, A.J.

    1983-09-13

    The apparatus for collecting radiant energy and converting same to alternate energy form includes a housing having an interior space and a radiation transparent window allowing, for example, solar radiation to be received in the interior space of the housing. Means are provided for passing a stream of fluid past said window and for injecting radiation absorbent particles in said fluid stream. The particles absorb the radiation and because of their very large surface area, quickly release the heat to the surrounding fluid stream. The fluid stream particle mixture is heated until the particles vaporize. The fluid stream is then allowed to expand in, for example, a gas turbine to produce mechanical energy. In an aspect of the present invention properly sized particles need not be vaporized prior to the entrance of the fluid stream into the turbine, as the particles will not damage the turbine blades. In yet another aspect of the invention, conventional fuel injectors are provided to inject fuel into the fluid stream to maintain the proper temperature and pressure of the fluid stream should the source of radiant energy be interrupted. In yet another aspect of the invention, an apparatus is provided which includes means for providing a hot fluid stream having hot particles disbursed therein which can radiate energy, means for providing a cooler fluid stream having cooler particles disbursed therein, which particles can absorb radiant energy and means for passing the hot fluid stream adjacent the cooler fluid stream to warm the cooler fluid and cooler particles by the radiation from the hot fluid and hot particles. 5 figs.

  6. Collector/Receiver Characterization (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2010-08-01

    Fact sheet describing NREL CSP Program capabilities for collector/receiver characterization: determining optical efficiency, measuring heat loss, developing and testing concentrators, concentrating the sun's power, and optically characterizing CSP plants.

  7. Microwave Radiometer – 3 Channel (MWR3C) Handbook

    SciTech Connect (OSTI)

    Cadeddu, MP

    2012-05-04

    The microwave radiometer 3-channel (MWR3C) provides time-series measurements of brightness temperatures from three channels centered at 23.834, 30, and 89 GHz. These three channels are sensitive to the presence of liquid water and precipitable water vapor.

  8. THE {gamma}-RAY EMISSION REGION IN THE FANAROFF-RILEY II RADIO GALAXY 3C 111

    SciTech Connect (OSTI)

    Grandi, P.; Torresi, E.; Stanghellini, C. E-mail: torresi@iasfbo.inaf.it

    2012-05-20

    The broad-line radio galaxy 3C 111, characterized by a Fanaroff-Riley II (FRII) radio morphology, is one of the sources of the misaligned active galactic nucleus sample, consisting of radio galaxies and steep spectrum radio quasars, recently detected by the Fermi Large Area Telescope (LAT). Our analysis of the 24 month {gamma}-ray light curve shows that 3C 111 was only occasionally detected at high energies. It was bright at the end of 2008 and faint, below the Fermi-LAT sensitivity threshold, for the rest of the time. A multifrequency campaign of 3C 111, ongoing in the same period, revealed an increase of the millimeter, optical, and X-ray fluxes in 2008 September-November, interpreted by Chatterjee et al. as due to the passage of a superluminal knot through the jet core. The temporal coincidence of the millimeter-optical-X-ray outburst with the GeV activity suggests a cospatiality of the events, allowing, for the first time, the localization of the {gamma}-ray dissipative zone in an FRII jet. We argue that the GeV photons of 3C 111 are produced in a compact region confined within 0.1 pc and at a distance of about 0.3 pc from the black hole.

  9. Development of potent inhibitors of the coxsackievirus 3C protease

    SciTech Connect (OSTI)

    Lee, Eui Seung; Lee, Won Gil; Yun, Soo-Hyeon; Rho, Seong Hwan; Im, Isak; Yang, Sung Tae; Sellamuthu, Saravanan; Lee, Yong Jae; Kwon, Sun Jae; Park, Ohkmae K.; Jeon, Eun-Seok; Park, Woo Jin . E-mail: wjpark@gist.ac.kr; Kim, Yong-Chul . E-mail: yongchul@gist.ac.kr

    2007-06-22

    Coxsackievirus B3 (CVB3) 3C protease (3CP) plays essential roles in the viral replication cycle, and therefore, provides an attractive therapeutic target for treatment of human diseases caused by CVB3 infection. CVB3 3CP and human rhinovirus (HRV) 3CP have a high degree of amino acid sequence similarity. Comparative modeling of these two 3CPs revealed one prominent distinction; an Asn residue delineating the S2' pocket in HRV 3CP is replaced by a Tyr residue in CVB3 3CP. AG7088, a potent inhibitor of HRV 3CP, was modified by substitution of the ethyl group at the P2' position with various hydrophobic aromatic rings that are predicted to interact preferentially with the Tyr residue in the S2' pocket of CVB3 3CP. The resulting derivatives showed dramatically increased inhibitory activities against CVB3 3CP. In addition, one of the derivatives effectively inhibited the CVB3 proliferation in vitro.

  10. Kinematic evidence for precessing beams in 3C 129

    SciTech Connect (OSTI)

    Icke, V.

    1981-06-01

    Some features of the radio trail of 3C 129 can be explained if it is assumed that the trail is due to plasma beams which precess as the galaxy traverses the intergalactic medium. The solution of a simple equation of motion, incorporating ram pressure in an external medium, is fitted to the trail. It is shown that the observations can be reproduced, to first order, if the beam generator in the galactic nucleus precesses with a period of 9 x 10/sup 6/ yr on a cone with opening half-angle 12/sup 0/, if the ram pressure stopping time scale is 5 x 10/sup 6/ yr, and if the initial speed of the plasma beam is 2600 km s/sup -1/.

  11. Solar heat receiver

    DOE Patents [OSTI]

    Hunt, Arlon J.; Hansen, Leif J.; Evans, David B.

    1985-01-01

    A receiver for converting solar energy to heat a gas to temperatures from 700.degree.-900.degree. C. The receiver is formed to minimize impingement of radiation on the walls and to provide maximum heating at and near the entry of the gas exit. Also, the receiver is formed to provide controlled movement of the gas to be heated to minimize wall temperatures. The receiver is designed for use with gas containing fine heat absorbing particles, such as carbon particles.

  12. Solar heat receiver

    DOE Patents [OSTI]

    Hunt, A.J.; Hansen, L.J.; Evans, D.B.

    1982-09-29

    A receiver is described for converting solar energy to heat a gas to temperatures from 700 to 900/sup 0/C. The receiver is formed to minimize impingement of radiation on the walls and to provide maximum heating at and near the entry of the gas exit. Also, the receiver is formed to provide controlled movement of the gas to be heated to minimize wall temperatures. The receiver is designed for use with gas containing fine heat absorbing particles, such as carbon particles.

  13. ON THE REDSHIFT OF THE VERY HIGH ENERGY BLAZAR 3C 66A

    SciTech Connect (OSTI)

    Furniss, A.; Williams, D. A. [Santa Cruz Institute of Particle Physics and Department of Physics, University of California Santa Cruz, 1156 High Street, Santa Cruz, CA 95064 (United States)] [Santa Cruz Institute of Particle Physics and Department of Physics, University of California Santa Cruz, 1156 High Street, Santa Cruz, CA 95064 (United States); Fumagalli, M. [Carnegie Observatories, 813 Santa Barbara Street, Pasadena, CA 91101 (United States)] [Carnegie Observatories, 813 Santa Barbara Street, Pasadena, CA 91101 (United States); Danforth, C. [CASA, Department of Astrophysical and Planetary Sciences, University of Colorado, 389-UCB, Boulder, CO 80309 (United States)] [CASA, Department of Astrophysical and Planetary Sciences, University of Colorado, 389-UCB, Boulder, CO 80309 (United States); Prochaska, J. X. [Department of Astronomy and Astrophysics, UCO/Lick Observatory, University of California, 1156 High Street, Santa Cruz, CA 95064 (United States)] [Department of Astronomy and Astrophysics, UCO/Lick Observatory, University of California, 1156 High Street, Santa Cruz, CA 95064 (United States)

    2013-03-20

    As a bright gamma-ray source, 3C 66A is of great interest to the high-energy astrophysics community, having a potential for placing cosmological constraints on models for the extragalactic background light (EBL) and the processes which contribute to this photon field. No firm spectroscopic redshift measurement has been possible for this blazar due to a lack of intrinsic emission and absorption features in optical spectra. We present new far-ultraviolet spectra from the Hubble Space Telescope/Cosmic Origins Spectrograph (HST/COS) of the BL Lac object 3C 66A covering the wavelength range 1132-1800 A. The data show a smooth continuum with intergalactic medium absorption features which can be used to place a firm lower limit on the blazar redshift of z {>=} 0.3347. An upper limit is set by statistically treating the non-detection of additional absorbers beyond z = 0.3347, indicating a redshift of less than 0.41 at 99% confidence and ruling out z {>=} 0.444 at 99.9% confidence. We conclude by showing how the redshift limits derived from the COS spectra remove the potential for this gamma-ray emitting blazar to place an upper limit on the flux of the EBL using high energy data from a flare in 2009 October.

  14. Central Receiver Test Facility

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

    Receiver Test Facility - Sandia Energy Energy Search Icon Sandia Home Locations Contact Us ... Applications National Solar Thermal Test Facility Nuclear Energy Systems ...

  15. Data-fusion receiver

    DOE Patents [OSTI]

    Gabelmann, Jeffrey M.; Kattner, J. Stephen; Houston, Robert A.

    2006-12-19

    This invention is an ultra-low frequency electromagnetic telemetry receiver which fuses multiple input receive sources to synthesize a decodable message packet from a noise corrupted telemetry message string. Each block of telemetry data to be sent to the surface receiver from a borehole tool is digitally encoded into a data packet prior to transmission. The data packet is modulated onto the ULF EM carrier wave and transmitted from the borehole to the surface and then are simultaneously detected by multiple receive sensors disbursed within the rig environment. The receive sensors include, but are not limited to, electric field and magnetic field sensors. The spacing of the surface receive elements is such that noise generators are unequally coupled to each receive element due to proximity and/or noise generator type (i.e. electric or magnetic field generators). The receiver utilizes a suite of decision metrics to reconstruct the original, non noise-corrupted data packet from the observation matrix via the estimation of individual data frames. The receiver will continue this estimation process until: 1) the message validates, or 2) a preset "confidence threshold" is reached whereby frames within the observation matrix are no longer "trusted".

  16. Fiber optic coupled optical sensor

    DOE Patents [OSTI]

    Fleming, Kevin J. (Albuquerque, NM)

    2001-01-01

    A displacement sensor includes a first optical fiber for radiating light to a target, and a second optical fiber for receiving light from the target. The end of the first fiber is adjacent and not axially aligned with the second fiber end. A lens focuses light from the first fiber onto the target and light from the target onto the second fiber.

  17. Extremely high polarization in the 2010 outburst of blazar 3C 454.3

    SciTech Connect (OSTI)

    Sasada, Mahito; Kino, Masaru; Uemura, Makoto; Yoshida, Michitoshi; Kawabata, Koji S.; Akitaya, Hiroshi; Fukazawa, Yasushi; Yasuda, Hajimu; Itoh, Ryosuke; Sakimoto, Kiyoshi; Ikejiri, Yuki; Ohsugi, Takashi; Komatsu, Tomoyuki; Miyamoto, Hisashi; Nagae, Osamu; Tanaka, Hiroyuki; Yamanaka, Masayuki; Nakaya, Hidehiko; Sato, Shuji

    2014-04-01

    The gamma-ray-detected blazar 3C 454.3 exhibits dramatic flux and polarization variations in the optical and near-infrared bands. In 2010 December, the object emitted a very bright outburst. We monitored it for approximately four years (including the 2010 outburst) by optical and near-infrared photopolarimetry. During the 2010 outburst, the object emitted two rapid, redder brightenings, at which the polarization degrees (PDs) in both bands increased significantly and the bands exhibited a frequency-dependent polarization. The observed frequency-dependent polarization leads us to propose that the polarization vector is composed of two vectors. Therefore, we separate the observed polarization vectors into short- and long-term components that we attribute to the emissions of the rapid brightenings and the outburst that varied the timescale of days and months, respectively. The estimated PD of the short-term component is greater than the maximum observed PD and is close to the theoretical maximum PD. We constrain the bulk Lorentz factors and inclination angles between the jet axis and the line of sight from the estimated PDs. In this case, the inclination angle of the emitting region of short-term component from the first rapid brightening should be equal to 90°, because the estimated PD of the short-term component was approximately equal to the theoretical maximum PD. Thus, the Doppler factor at the emitting region of the first rapid brightening should be equal to the bulk Lorentz factor.

  18. Klimov receives Alexander von Humboldt award

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

    Klimov Receives Alexander Von Humboldt Award Klimov receives Alexander von Humboldt award The German government grants the award in recognition of a researcher whose discoveries, theories or insights have had a significant impact on his or her own discipline and who is expected to continue producing cutting-edge achievements in the future. May 16, 2013 Victor Klimov Victor Klimov Klimov is an expert in nanocrystal quantum dots and optical amplification in nanocrystals. Victor Klimov of Physical

  19. KP-VA-3-C Wholesale Power Rate Schedule | Department of Energy

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

    3-C Wholesale Power Rate Schedule KP-VA-3-C Wholesale Power Rate Schedule Area: Virginia Power System: Kerr-Philpott This rate schedule shall be available to public bodies and ...

  20. KP-DEP-3-C Wholesale Power Rate Schedule | Department of Energy

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

    3-C Wholesale Power Rate Schedule KP-DEP-3-C Wholesale Power Rate Schedule Area: Duke Energy Progress System: Kerr-Philpott This rate schedule shall be available to public bodies ...

  1. Single-Step Non-Thermal Plasma Synthesis of 3C-SiC Nanoparticles...

    Office of Scientific and Technical Information (OSTI)

    Single-Step Non-Thermal Plasma Synthesis of 3C-SiC Nanoparticles Citation Details In-Document Search Title: Single-Step Non-Thermal Plasma Synthesis of 3C-SiC Nanoparticles ...

  2. CALUTRON RECEIVER STRUCTURE

    DOE Patents [OSTI]

    Roush, J.L.

    1959-09-01

    A receiver is described for collecting isotopes in a calutron The receiver has several compartments, formed by a sertes of parallel metal plates and an open front. Each plate has flanges which space it from the other plates and a flexible extension pressing against a common supporting red to maintain the plate in assembled relation when all but the last rod is removed. The plates may be removed individualy from the front of the receiver, cleaned ard replaced without disturbing the alignment of the other plates.

  3. Shipping and Receiving

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

    Shipping and Receiving Print On this page: Transport Policy Shipping to the ALS Shipping from the ALS Shipping Hazardous Materials Contacts: ALS Shipping & Receiving (small packages) LBNL Shipping & Receiving (large packages requiring forklift truck) Building 7 Hours: M-F, 7:30 am-4:30 pm Telephone: 510 486 4494 Building 69 Hours: M-F, 7:00 am-3:30 pm Telephone: 510 486 4935 Fax: 510 486 5668 Transport Policy - Getting Your Samples and Equipment to and from the ALS All Lab personnel,

  4. Shipping and Receiving

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

    Shipping and Receiving Print On this page: Transport Policy Shipping to the ALS Shipping from the ALS Shipping Hazardous Materials Contacts: ALS Shipping & Receiving (small packages) LBNL Shipping & Receiving (large packages requiring forklift truck) Building 7 Hours: M-F, 7:30 am-4:30 pm Telephone: 510 486 4494 Building 69 Hours: M-F, 7:00 am-3:30 pm Telephone: 510 486 4935 Fax: 510 486 5668 Transport Policy - Getting Your Samples and Equipment to and from the ALS All Lab personnel,

  5. Shipping and Receiving

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

    Shipping and Receiving Print On this page: Transport Policy Shipping to the ALS Shipping from the ALS Shipping Hazardous Materials Contacts: ALS Shipping & Receiving (small packages) LBNL Shipping & Receiving (large packages requiring forklift truck) Building 7 Hours: M-F, 7:30 am-4:30 pm Telephone: 510 486 4494 Building 69 Hours: M-F, 7:00 am-3:30 pm Telephone: 510 486 4935 Fax: 510 486 5668 Transport Policy - Getting Your Samples and Equipment to and from the ALS All Lab personnel,

  6. Shipping and Receiving

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

    Shipping and Receiving Print On this page: Transport Policy Shipping to the ALS Shipping from the ALS Shipping Hazardous Materials Contacts: ALS Shipping & Receiving (small packages) LBNL Shipping & Receiving (large packages requiring forklift truck) Building 7 Hours: M-F, 7:30 am-4:30 pm Telephone: 510 486 4494 Building 69 Hours: M-F, 7:00 am-3:30 pm Telephone: 510 486 4935 Fax: 510 486 5668 Transport Policy - Getting Your Samples and Equipment to and from the ALS All Lab personnel,

  7. Ultrasonic pulser-receiver

    DOE Patents [OSTI]

    Taylor, Steven C.

    2006-09-12

    Ultrasonic pulser-receiver circuitry, for use with an ultrasonic transducer, the circuitry comprising a circuit board; ultrasonic pulser circuitry supported by the circuit board and configured to be coupled to an ultrasonic transducer and to cause the ultrasonic transducer to emit an ultrasonic output pulse; receiver circuitry supported by the circuit board, coupled to the pulser circuitry, including protection circuitry configured to protect against the ultrasonic pulse and including amplifier circuitry configured to amplify an echo, received back by the transducer, of the output pulse; and a connector configured to couple the ultrasonic transducer directly to the circuit board, to the pulser circuitry and receiver circuitry, wherein impedance mismatches that would result if the transducer was coupled to the circuit board via a cable can be avoided.

  8. Solar energy receiver

    DOE Patents [OSTI]

    Schwartz, Jacob

    1978-01-01

    An improved long-life design for solar energy receivers provides for greatly reduced thermally induced stress and permits the utilization of less expensive heat exchanger materials while maintaining receiver efficiencies in excess of 85% without undue expenditure of energy to circulate the working fluid. In one embodiment, the flow index for the receiver is first set as close as practical to a value such that the Graetz number yields the optimal heat transfer coefficient per unit of pumping energy, in this case, 6. The convective index for the receiver is then set as closely as practical to two times the flow index so as to obtain optimal efficiency per unit mass of material.

  9. Yoho receives NNSA Fellowship

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

    Yoho receives NNSA Fellowship Yoho receives NNSA Fellowship Michael Yoho was one of four students selected nationwide for the NNIS fellowship. July 15, 2014 Michael Yoho Michael Yoho The NNIS Fellowship program is designed to meet NNSA's needs for appropriately trained personnel in research and development in areas pertinent to nuclear nonproliferation and international safeguards. Michael Yoho, a doctoral candidate at the University of Texas at Austin and graduate research assistant in the

  10. Central solar energy receiver

    DOE Patents [OSTI]

    Drost, M. Kevin

    1983-01-01

    An improved tower-mounted central solar energy receiver for heating air drawn through the receiver by an induced draft fan. A number of vertically oriented, energy absorbing, fin-shaped slats are radially arranged in a number of concentric cylindrical arrays on top of the tower coaxially surrounding a pipe having air holes through which the fan draws air which is heated by the slats which receive the solar radiation from a heliostat field. A number of vertically oriented and wedge-shaped columns are radially arranged in a number of concentric cylindrical clusters surrounding the slat arrays. The columns have two mirror-reflecting sides to reflect radiation into the slat arrays and one energy absorbing side to reduce reradiation and reflection from the slat arrays.

  11. MULTI-EPOCH OBSERVATIONS OF THE RED WING EXCESS IN THE SPECTRUM OF 3C 279

    SciTech Connect (OSTI)

    Punsly, Brian E-mail: brian.punsly@comdev-usa.com

    2013-01-10

    It has been previously determined that there is a highly significant correlation between the spectral index from 10 GHz to 1350 A and the amount of excess luminosity in the red wing of quasar C IV {lambda}1549 broad emission lines (BELs). Ostensibly, the prominence of the red excess is associated with the radio jet emission mechanism and is most pronounced for lines of sight close to the jet axis. Studying the scant significant differences in the UV spectra of radio-loud and radio-quiet quasars might provide vital clues to the origin of the unknown process that creates powerful relativistic jets that appear in only about 10% of quasars. In this study, the phenomenon is explored with multi-epoch observations of the Mg II {lambda}2798 broad line in 3C 279 which has one of the largest known red wing excesses in a quasar spectrum. The amount of excess that is detected appears to be independent of all directly observed optical continuum, radio, or submillimeter properties (fluxes or polarizations). The only trend that occurs in this sparse data is: the stronger the BEL, the larger the fraction of flux that resides in the red wing. It is concluded that more monitoring is needed and spectropolarimetry with a large telescope is essential during low states to understand more.

  12. Multichannel homodyne receiver

    DOE Patents [OSTI]

    Landt, J.A.

    1981-01-19

    A homodyne radar transmitter/receiver device which produces a single combined output which contains modulated backscatter information for all phase conditions of both modulated and unmodulated backscatter signals is described. The device utilizes taps along coaxial transmission lines, strip transmission line, and waveguides which are spaced by 1/8 wavelength or 1/6 wavelength, etc. This greatly reduces costs by eliminating separate transmission and reception antennas and an expensive arrangement of power splitters and mixers utilized in the prior art.

  13. Yoho receives NNSA Fellowship

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

    Yoho receives NNSA Fellowship July 15, 2014 Michael Yoho, a doctoral candidate at the University of Texas at Austin and graduate research assistant in the Actinide Analytical Chemistry Group (C-AAC), has been awarded the Nuclear Nonproliferation International Safeguards (NNIS) Graduate Fellowship, sponsored by the NNSA Office of Nonproliferation and International Security's Next Generation Safeguards Initiative (NA-241). Yoho's achievements Yoho was one of four students selected nationwide for

  14. falling-particle receiver

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

    falling-particle receiver - Sandia Energy Energy Search Icon Sandia Home Locations Contact Us Employee Locator Energy & Climate Secure & Sustainable Energy Future Stationary Power Energy Conversion Efficiency Solar Energy Wind Energy Water Power Supercritical CO2 Geothermal Natural Gas Safety, Security & Resilience of the Energy Infrastructure Energy Storage Nuclear Power & Engineering Grid Modernization Battery Testing Nuclear Energy Defense Waste Management Programs Advanced

  15. Central Receiver Test Facility

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

    Receiver Test Facility - Sandia Energy Energy Search Icon Sandia Home Locations Contact Us Employee Locator Energy & Climate Secure & Sustainable Energy Future Stationary Power Energy Conversion Efficiency Solar Energy Wind Energy Water Power Supercritical CO2 Geothermal Natural Gas Safety, Security & Resilience of the Energy Infrastructure Energy Storage Nuclear Power & Engineering Grid Modernization Battery Testing Nuclear Energy Defense Waste Management Programs Advanced

  16. Multichannel homodyne receiver

    DOE Patents [OSTI]

    Landt, Jeremy A. (Los Alamos, NM)

    1982-01-01

    A homodyne radar transmitter/receiver device which produces a single combined output which contains modulated backscatter information for all phase conditions of both modulated and unmodulated backscatter signals. The device utilizes taps along coaxial transmission lines, strip transmission line, and waveguides which are spaced by 1/8 wavelength or 1/6 wavelength, etc. This greatly reduces costs by eliminating separate transmission and reception antennas and an expensive arrangement of power splitters and mixers utilized in the prior art.

  17. Czanderna Receives Research Award

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

    Czanderna Receives Research Award For more information contact: e:mail: Public Affairs Golden, Colo., May 5, 1999 — A scientist at the U.S. Department of Energy's National Renewable Energy Laboratory (NREL) was recognized for his contributions to the science and technology of energy-related research. The Energy Technology Division (ETD) of The Electrochemical Society selected Dr. Al Czanderna for its Fourth Research Award in recognition of his outstanding solar research. During his 21-year

  18. Ultra-wideband receiver

    DOE Patents [OSTI]

    McEwan, T.E.

    1996-06-04

    An ultra-wideband (UWB) receiver utilizes a strobed input line with a sampler connected to an amplifier. In a differential configuration, {+-}UWB inputs are connected to separate antennas or to two halves of a dipole antenna. The two input lines include samplers which are commonly strobed by a gating pulse with a very low duty cycle. In a single ended configuration, only a single strobed input line and sampler is utilized. The samplers integrate, or average, up to 10,000 pulses to achieve high sensitivity and good rejection of uncorrelated signals. 21 figs.

  19. Ultra-wideband receiver

    DOE Patents [OSTI]

    McEwan, Thomas E.

    1994-01-01

    An ultra-wideband (UWB) receiver utilizes a strobed input line with a sampler connected to an amplifier. In a differential configuration, .+-.UWB inputs are connected to separate antennas or to two halves of a dipole antenna. The two input lines include samplers which are commonly strobed by a gating pulse with a very low duty cycle. In a single ended configuration, only a single strobed input line and sampler is utilized. The samplers integrate, or average, up to 10,000 pulses to achieve high sensitivity and good rejection of uncorrelated signals.

  20. Ultra-wideband receiver

    DOE Patents [OSTI]

    McEwan, T.E.

    1994-09-06

    An ultra-wideband (UWB) receiver utilizes a strobed input line with a sampler connected to an amplifier. In a differential configuration, [+-] UWB inputs are connected to separate antennas or to two halves of a dipole antenna. The two input lines include samplers which are commonly strobed by a gating pulse with a very low duty cycle. In a single ended configuration, only a single strobed input line and sampler is utilized. The samplers integrate, or average, up to 10,000 pulses to achieve high sensitivity and good rejection of uncorrelated signals. 16 figs.

  1. Ultra-wideband receiver

    DOE Patents [OSTI]

    McEwan, Thomas E.

    1996-01-01

    An ultra-wideband (UWB) receiver utilizes a strobed input line with a sampler connected to an amplifier. In a differential configuration, .+-.UWB inputs are connected to separate antennas or to two halves of a dipole antenna. The two input lines include samplers which are commonly strobed by a gating pulse with a very low duty cycle. In a single ended configuration, only a single strobed input line and sampler is utilized. The samplers integrate, or average, up to 10,000 pulses to achieve high sensitivity and good rejection of uncorrelated signals.

  2. MULTIWAVELENGTH VARIATIONS OF 3C 454.3 DURING THE 2010 NOVEMBER TO 2011 JANUARY OUTBURST

    SciTech Connect (OSTI)

    Wehrle, Ann E.; Marscher, Alan P.; Jorstad, Svetlana G.; Joshi, Manasvita; MacDonald, Nicholas R.; Williamson, Karen E.; Agudo, Ivan; Gurwell, Mark A.; Grupe, Dirk

    2012-10-20

    We present multiwavelength data of the blazar 3C 454.3 obtained during an extremely bright outburst from 2010 November through 2011 January. These include flux density measurements with the Herschel Space Observatory at five submillimeter-wave and far-infrared bands, the Fermi Large Area Telescope at {gamma}-ray energies, Swift at X-ray, ultraviolet (UV), and optical frequencies, and the Submillimeter Array at 1.3 mm. From this data set, we form a series of 52 spectral energy distributions (SEDs) spanning nearly two months that are unprecedented in time coverage and breadth of frequency. Discrete correlation analysis of the millimeter, far-infrared, and {gamma}-ray light curves show that the variations were essentially simultaneous, indicative of cospatiality of the emission, at these wavebands. In contrast, differences in short-term fluctuations at various wavelengths imply the presence of inhomogeneities in physical conditions across the source. We locate the site of the outburst in the parsec-scale 'core', whose flux density as measured on 7 mm Very Long Baseline Array images increased by 70% during the first five weeks of the outburst. Based on these considerations and guided by the SEDs, we propose a model in which turbulent plasma crosses a conical standing shock in the parsec-scale region of the jet. Here, the high-energy emission in the model is produced by inverse Compton scattering of seed photons supplied by either nonthermal radiation from a Mach disk, thermal emission from hot dust, or (for X-rays) synchrotron radiation from plasma that crosses the standing shock. For the two dates on which we fitted the model SED to the data, the model corresponds very well to the observations at all bands except at X-ray energies, where the spectrum is flatter than observed.

  3. Fiber optic connector

    DOE Patents [OSTI]

    Rajic, S.; Muhs, J.D.

    1996-10-22

    A fiber optic connector and method for connecting composite materials within which optical fibers are imbedded are disclosed. The fiber optic connector includes a capillary tube for receiving optical fibers at opposing ends. The method involves inserting a first optical fiber into the capillary tube and imbedding the unit in the end of a softened composite material. The capillary tube is injected with a coupling medium which subsequently solidifies. The composite material is machined to a desired configuration. An external optical fiber is then inserted into the capillary tube after fluidizing the coupling medium, whereby the optical fibers are coupled. 3 figs.

  4. Discovery of Pulsations from the Pulsar J0205 6449 in SNR 3C...

    Office of Scientific and Technical Information (OSTI)

    Gamma-Ray Space Telescope Citation Details In-Document Search Title: Discovery of Pulsations from the Pulsar J0205 6449 in SNR 3C 58 with the Fermi Gamma-Ray Space Telescope ...

  5. Spare parts list for B83-0, Type 3C, Issue G

    SciTech Connect (OSTI)

    1987-02-25

    This report is a table listing spare parts for the B83-0 type 3C. An explanation for information in each column is given. This issue supersedes Issue F, dated March 22, 1985.

  6. EIA Energy Efficiency-Table 3c. Capacity Adjusted Value of Production...

    Gasoline and Diesel Fuel Update (EIA)

    c Page Last Modified: May 2010 Table 3c. Capacity Adjusted Value of Production 1 by Selected Industries, 1998, 2002, and 2006 (Current Billion Dollars) MECS Survey Years NAICS...

  7. Structural Basis for Molecular Discrimination by a 3',3'-cGAMP Sensing Riboswitch

    SciTech Connect (OSTI)

    Ren, Aiming; Wang, Xin  C.; Kellenberger, Colleen  A.; Rajashankar, Kanagalaghatta  R.; Jones, Roger  A.; Hammond, Ming  C.; Patel, Dinshaw  J.

    2015-04-07

    Cyclic dinucleotides are second messengers that target the adaptor STING and stimulate the innate immune response in mammals. Besides protein receptors, there are bacterial riboswitches that selectively recognize cyclic dinucleotides. We recently discovered a natural riboswitch that targets 3',3'-cGAMP, which is distinguished from the endogenous mammalian signal 2',3'-cGAMP by its backbone connectivity. Here, we report on structures of the aptamer domain of the 3',3'-cGAMP riboswitch from Geobacter in the 3',3'-cGAMP and c-di-GMP bound states. The riboswitch adopts a tuning forklike architecture with a junctional ligand-binding pocket and different orientations of the arms are correlated with the identity of the bound cyclic dinucleotide. Subsequent biochemical experiments revealed that specificity of ligand recognition can be affected by point mutations outside of the binding pocket, which has implications for both the assignment and reengineering of riboswitches in this structural class.

  8. KP-AP-3-C Wholesale Power Rate Schedule | Department of Energy

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

    3-C Wholesale Power Rate Schedule KP-AP-3-C Wholesale Power Rate Schedule Area: American Electric Power System: Kerr-Philpott This rate schedule shall be available to public bodies and cooperatives (any one of whom is hereinafter called the Customer) in Virginia to whom power may be scheduled pursuant to contracts between the Government, American Electric Power Service Corporation (hereinafter called the Company), PJM Interconnection LLC (hereinafter called PJM), and the Customer. This rate

  9. Liquid cooled, linear focus solar cell receiver

    DOE Patents [OSTI]

    Kirpich, A.S.

    1983-12-08

    Separate structures for electrical insulation and thermal conduction are established within a liquid cooled, linear focus solar cell receiver for use with parabolic or Fresnel optical concentrators. The receiver includes a V-shaped aluminum extrusion having a pair of outer faces each formed with a channel receiving a string of solar cells in thermal contact with the extrusion. Each cell string is attached to a continuous glass cover secured within the channel with spring clips to isolate the string from the external environment. Repair or replacement of solar cells is effected simply by detaching the spring clips to remove the cover/cell assembly without interrupting circulation of coolant fluid through the receiver. The lower surface of the channel in thermal contact with the cells of the string is anodized to establish a suitable standoff voltage capability between the cells and the extrusion. Primary electrical insulation is provided by a dielectric tape disposed between the coolant tube and extrusion. Adjacent solar cells are soldered to interconnect members designed to accommodate thermal expansion and mismatches. The coolant tube is clamped into the extrusion channel with a releasably attachable clamping strip to facilitate easy removal of the receiver from the coolant circuit.

  10. Liquid cooled, linear focus solar cell receiver

    DOE Patents [OSTI]

    Kirpich, Aaron S.

    1985-01-01

    Separate structures for electrical insulation and thermal conduction are established within a liquid cooled, linear focus solar cell receiver for use with parabolic or Fresnel optical concentrators. The receiver includes a V-shaped aluminum extrusion having a pair of outer faces each formed with a channel receiving a string of solar cells in thermal contact with the extrusion. Each cell string is attached to a continuous glass cover secured within the channel with spring clips to isolate the string from the external environment. Repair or replacement of solar cells is effected simply by detaching the spring clips to remove the cover/cell assembly without interrupting circulation of coolant fluid through the receiver. The lower surface of the channel in thermal contact with the cells of the string is anodized to establish a suitable standoff voltage capability between the cells and the extrusion. Primary electrical insulation is provided by a dielectric tape disposed between the coolant tube and extrusion. Adjacent solar cells are soldered to interconnect members designed to accommodate thermal expansion and mismatches. The coolant tube is clamped into the extrusion channel with a releasably attachable clamping strip to facilitate easy removal of the receiver from the coolant circuit.

  11. WIPP Receives Top Safety Award

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

    WIPP Receives Top Safety Award CARLSBAD, N.M., November 10, 2011 - The U.S. Department of Energy's (DOE) Waste Isolation Pilot Plant (WIPP) received top accolades from New...

  12. Optical microphone

    DOE Patents [OSTI]

    Veligdan, James T.

    2000-01-11

    An optical microphone includes a laser and beam splitter cooperating therewith for splitting a laser beam into a reference beam and a signal beam. A reflecting sensor receives the signal beam and reflects it in a plurality of reflections through sound pressure waves. A photodetector receives both the reference beam and reflected signal beam for heterodyning thereof to produce an acoustic signal for the sound waves. The sound waves vary the local refractive index in the path of the signal beam which experiences a Doppler frequency shift directly analogous with the sound waves.

  13. Solar central receiver heliostat reflector assembly

    DOE Patents [OSTI]

    Horton, Richard H.; Zdeb, John J.

    1980-01-01

    A heliostat reflector assembly for a solar central receiver system comprises a light-weight, readily assemblable frame which supports a sheet of stretchable reflective material and includes mechanism for selectively applying tension to and positioning the sheet to stretch it to optical flatness. The frame is mounted on and supported by a pipe pedestal assembly that, in turn, is installed in the ground. The frame is controllably driven in a predetermined way by a light-weight drive system so as to be angularly adjustable in both elevation and azimuth to track the sun and efficiently continuously reflect the sun's rays to a focal zone, i.e. central receiver, which forms part of a solar energy utilization system, such as a solar energy fueled electrical power generation system. The frame may include a built-in system for testing for optical flatness of the reflector. The preferable geometric configuration of the reflector is octagonal; however, it may be other shapes, such as hexagonal, pentagonal or square. Several different embodiments of means for tensioning and positioning the reflector to achieve optical flatness are disclosed. The reflector assembly is based on the stretch frame concept which provides an extremely light-weight, simple, low-cost reflector assembly that may be driven for positioning and tracking by a light-weight, inexpensive drive system.

  14. Hanford Projects Receive Sustainability Awards

    Broader source: Energy.gov [DOE]

    RICHLAND, WASH. – Hanford’s Department of Energy offices and their contractors received special recognition Tuesday for their part in promoting sustainability.

  15. Resolving the structure of Ti3C2Tx MXenes through multilevel structural modeling of the atomic pair distribution function

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

    Wesolowski, David J.; Wang, Hsiu -Wen; Page, Katharine L.; Naguib, Michael; Gogotsi, Yury

    2015-12-08

    MXenes are a recently discovered family of two-dimensional (2D) early transition metal carbides and carbonitrides, which have already shown many attractive properties and a great promise in energy storage and many other applications. However, a complex surface chemistry and small coherence length has been an obstacle in some applications of MXenes, also limiting accuracy of predictions of their properties. In this study, we describe and benchmark a novel way of modeling layered materials with real interfaces (diverse surface functional groups and stacking order between the adjacent monolayers) against experimental data. The structures of three kinds of Ti3C2Tx MXenes (T standsmore » for surface terminating species, including O, OH, and F) produced under different synthesis conditions were resolved for the first time using atomic pair distribution function obtained by high-quality neutron total scattering. The true nature of the material can be easily captured with the sensitivity of neutron scattering to the surface species of interest and the detailed third-generation structure model we present. The modeling approach leads to new understanding of MXene structural properties and can replace the currently used idealized models in predictions of a variety of physical, chemical and functional properties of Ti3C2-based MXenes. Furthermore, the developed models can be employed to guide the design of new MXene materials with selected surface termination and controlled contact angle, catalytic, optical, electrochemical and other properties. We suggest that the multi-level structural modeling should form the basis for a generalized methodology on modeling diffraction and pair distribution function data for 2D and layered materials.« less

  16. supplemental_lists_1d-2d-3c_06-24-2011.xls | Department of Energy

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

    lists1d-2d-3c06-24-2011.xls supplementallists1d-2d-3c06-24-2011.xls Office spreadsheet icon supplementallists1d-2d-3c06-24-2011.xls More Documents & Publications...

  17. Structural Basis for Molecular Discrimination by a 3',3'-cGAMP Sensing Riboswitch

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

    Ren, Aiming; Wang, Xin  C.; Kellenberger, Colleen  A.; Rajashankar, Kanagalaghatta  R.; Jones, Roger  A.; Hammond, Ming  C.; Patel, Dinshaw  J.

    2015-04-07

    Cyclic dinucleotides are second messengers that target the adaptor STING and stimulate the innate immune response in mammals. Besides protein receptors, there are bacterial riboswitches that selectively recognize cyclic dinucleotides. We recently discovered a natural riboswitch that targets 3',3'-cGAMP, which is distinguished from the endogenous mammalian signal 2',3'-cGAMP by its backbone connectivity. Here, we report on structures of the aptamer domain of the 3',3'-cGAMP riboswitch from Geobacter in the 3',3'-cGAMP and c-di-GMP bound states. The riboswitch adopts a tuning forklike architecture with a junctional ligand-binding pocket and different orientations of the arms are correlated with the identity of the boundmore » cyclic dinucleotide. Subsequent biochemical experiments revealed that specificity of ligand recognition can be affected by point mutations outside of the binding pocket, which has implications for both the assignment and reengineering of riboswitches in this structural class.« less

  18. UWB delay and multiply receiver

    DOE Patents [OSTI]

    Dallum, Gregory E.; Pratt, Garth C.; Haugen, Peter C.; Romero, Carlos E.

    2013-09-10

    An ultra-wideband (UWB) delay and multiply receiver is formed of a receive antenna; a variable gain attenuator connected to the receive antenna; a signal splitter connected to the variable gain attenuator; a multiplier having one input connected to an undelayed signal from the signal splitter and another input connected to a delayed signal from the signal splitter, the delay between the splitter signals being equal to the spacing between pulses from a transmitter whose pulses are being received by the receive antenna; a peak detection circuit connected to the output of the multiplier and connected to the variable gain attenuator to control the variable gain attenuator to maintain a constant amplitude output from the multiplier; and a digital output circuit connected to the output of the multiplier.

  19. The blob crashes into the mirror: modeling the exceptional γ-ray flaring activity of 3C 454.3 in 2010 November

    SciTech Connect (OSTI)

    Vittorini, V.; Tavani, M.; Vercellone, S.

    2014-10-01

    3C 454.3 is a prominent flat-spectrum radio quasar that in recent years attracted considerable attention because of its variable high-energy emissions. In this paper, we focus on the exceptional flaring activity of 3C 454.3 that was detected by AGILE and by Fermi-LAT in 2010 November. In the light of the time-varying data ranging from the radio, optical, and X-ray up to GeV γ-ray bands, we discuss a theoretical framework addressing all data in their overall evolution. For two weeks, the source has shown a plateau of enhanced GeV emission preceding a sudden major flare lasting about three days before decaying. The γ-ray flare onset is abrupt (about six hours), and is characterized by a prominent 'Compton dominance' with the GeV flux exceeding the pre-flare values by a factor of four to five. During this episode, the optical and X-ray fluxes increased by a factor of around two. Within the standard framework of a jet launched with a Lorentz bulk factor Γ ∼ 10 from a central black hole, we explore the yields of two alternatives. Case 1, with high-energy emission originating within the broad line region (BLR); and Case 2, with most of it produced outside at larger distances of a few parsecs. We show that Case 1 has considerable problems in explaining the whole set of multifrequency data. Case 2, instead, leads to a consistent and interesting interpretation based on the enhanced inverse Compton radiation that is produced as the jet crashes onto a mirror cloud positioned at parsec scales. This model explains the γ-ray versus optical/X-ray behavior of 3C 454.3, including the otherwise puzzling phenomena such as the prominent 'rphan' optical flare, and the enhanced line emission with no appreciable γ-ray counterpart that preceded the GeV γ-ray flare. It also accounts for the delayed onset of the latter on top of the long plateau. Our modeling of the exceptional 3C 454.3 γ-ray flare shows that while emission inside the canonical BLR is problematic, major and rapid

  20. Stepped inlet optical panel

    DOE Patents [OSTI]

    Veligdan, James T.

    2001-01-01

    An optical panel includes stacked optical waveguides having stepped inlet facets collectively defining an inlet face for receiving image light, and having beveled outlet faces collectively defining a display screen for displaying the image light channeled through the waveguides by internal reflection.

  1. Integrated optical interrogation of micro-structures (Patent...

    Office of Scientific and Technical Information (OSTI)

    is configured to receive a light beam. A waveguide, such as an optical waveguide or an optical fiber, is positioned to redirect light towards the deflectable member. ...

  2. BLAZAR 3C 454.3 IN OUTBURST AND QUIESCENCE DURING 2005-2007: TWO VARIABLE SYNCHROTRON EMISSION PEAKS

    SciTech Connect (OSTI)

    Ogle, Patrick M.; Wehrle, Ann E.; Balonek, Thomas; Gurwell, Mark A.

    2011-08-01

    We monitored the flaring blazar 3C 454.3 during 2005 June-July with the Spitzer Infrared Spectrograph (IRS: 15 epochs), Infrared Array Camera (IRAC: 12 epochs), and Multiband Imaging Photometer (MIPS: 2 epochs). We also made Spitzer IRS, IRAC, and MIPS observations from 2006 December to 2007 January when the source was in a low state, the latter simultaneous with a single Chandra X-ray observation. In addition, we present optical and submillimeter (sub-mm) monitoring data. The 2005-2007 period saw three major outbursts. We present evidence that the radio-optical spectral energy distribution (SED) actually consists of two variable synchrotron peaks, the primary at IR and the secondary at sub-mm wavelengths. The lag between the optical and sub-mm outbursts may indicate that these two peaks arise from two distinct regions along the jet separated by a distance of 0.9-3 pc. The flux at 5-35 {mu}m varied by a factor of 40 and the IR peak varied in frequency from 4 x 10{sup 12} Hz to 4 x 10{sup 13} Hz between the highest and lowest states in 2005 and 2006, respectively. Variability was well correlated across the mid-IR band, with no measurable lag. Flares that doubled in flux occurred on a timescale of {approx}5 days, yielding a variability size of <0.05 pc. The IR SED peak moved to higher frequency as a flare brightened, then returned to lower frequency as it decayed. The fractional variability amplitude increased with frequency, which we attribute to decreasing synchrotron self-absorption optical depth. Mid-IR flares may signal the re-energization of a shock that runs into inhomogeneities along the pre-existing jet or in the external medium. The synchrotron peak frequencies during each major outburst may depend upon both the distance from the jet apex and the physical conditions in the shocks. Variation of the Doppler parameter along a curved or helical jet is another possibility. Frequency variability of the IR synchrotron peak may have important consequences for the

  3. receive DOE Early Career Award

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

    will receive financial assistance, still to be determined, to cover year-round salary plus research expenses. The funding is for the first year of planned five-year...

  4. WIPP Receives 100th Shipment

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

    Waste Isolation Pilot Plant Receives 100 th Shipment CARLSBAD, N.M., October 19, 2000 - The 100 th shipment of defense-generated transuranic radioactive waste has arrived safely at...

  5. WIPP Receives 200th Shipment

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

    200 th Shipment CARLSBAD, N.M., April 18, 2001 - The U.S. Department of Energy's (DOE) Waste Isolation Pilot Plant (WIPP) today received its 200 th shipment of defense- generated...

  6. Fensin receives Young Leaders Award

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

    Fensin receives Young Leaders Award March 3, 2016 Saryu Fensin of LANL's Materials Science in Radiation and Dynamics Extremes group has been selected to receive the 2015 TMS Young Leaders International Scholar- Japanese Institute of Metals (JIM) Award. She will represent the Minerals, Metals & Materials Society (TMS) at the JIM Spring Annual Meeting at the Tokyo University of Science in Japan and present her research. The award is part of the TMS Young Leaders International Scholar Program,

  7. Fermi large area telescope observations of blazar 3C 279 occultations by the sun

    SciTech Connect (OSTI)

    Barbiellini, G.; Bastieri, D.; Buson, S.; Bechtol, K.; Blandford, R. D.; Borgland, A. W.; Buehler, R.; Cameron, R. A.; Chiang, J.; Bellazzini, R.; Bregeon, J.; Bruel, P.; Caraveo, P. A.; Cavazzuti, E.; Ciprini, S.; Cecchi, C.; Chaves, R. C. G.; Cheung, C. C. E-mail: phdmitry@stanford.edu; and others

    2014-04-01

    Observations of occultations of bright ?-ray sources by the Sun may reveal predicted pair halos around blazars and/or new physics, such as, e.g., hypothetical light dark matter particlesaxions. We use Fermi Gamma-Ray Space Telescope (Fermi) data to analyze four occultations of blazar 3C 279 by the Sun on October 8 each year from 2008 to 2011. A combined analysis of the observations of these occultations allows a point-like source at the position of 3C 279 to be detected with significance of ?3?, but does not reveal any significant excess over the flux expected from the quiescent Sun. The likelihood ratio test rules out complete transparency of the Sun to the blazar ?-ray emission at a 3? confidence level.

  8. Atmospheric formation and removal of C3-C5 peroxyacyl nitrates

    SciTech Connect (OSTI)

    Grosjean, D.

    1993-12-31

    The C3-C5 peroxyacyl nitrates RC(O)OONO{sub 2} (R=Et, n-Pr, i-Pr, n-Bu, i-Bu, sec-Bu, t-Bu, Ch{sub 2}=CH- and CH{sub 2}=C(CH{sub 3})-) have been synthesized and prepared in situ and have been characterized by electron capture gas chromatography. Their thermal decomposition rates have been measured and are similar to that of PAN (R = CH{sub 3}). Carbonyl products have been identified and the corresponding reaction mechanisms have been outlined. Ambient levels of several peroxyacyl nitrates (R =CH{sub 3}, Et, n-Pr and CH{sub 2}=(CH{sub 3})-) have been measured. The results are discussed with focus on atmospheric hydrocarbons as precursors to C3-C5 peroxyacyl nitrates in the atmosphere.

  9. Time constant of defect relaxation in ion-irradiated 3C-SiC

    SciTech Connect (OSTI)

    Wallace, J. B.; Bayu Aji, L. B.; Kucheyev, S. O.; Shao, L.

    2015-05-18

    Above room temperature, the buildup of radiation damage in SiC is a dynamic process governed by the mobility and interaction of ballistically generated point defects. Here, we study the dynamics of radiation defects in 3C-SiC bombarded at 100 °C with 500 keV Ar ions, with the total ion dose split into a train of equal pulses. Damage–depth profiles are measured by ion channeling for a series of samples irradiated under identical conditions except for different durations of the passive part of the beam cycle. Results reveal an effective defect relaxation time constant of ∼3 ms (for second order kinetics) and a dynamic annealing efficiency of ∼40% for defects in both Si and C sublattices. This demonstrates a crucial role of dynamic annealing at elevated temperatures and provides evidence of the strong coupling of defect accumulation processes in the two sublattices of 3C-SiC.

  10. Recombining plasma in the gamma-ray-emitting mixed-morphology supernova remnant 3C 391

    SciTech Connect (OSTI)

    Ergin, T.; Sezer, A.; Saha, L.; Majumdar, P.; Chatterjee, A.; Bayirli, A.; Ercan, E. N.

    2014-07-20

    A group of middle-aged mixed-morphology (MM) supernova remnants (SNRs) interacting with molecular clouds (MCs) has been discovered to be strong GeV gamma-ray emitters by the Large Area Telescope (LAT) on board the Fermi Gamma-Ray Space Telescope (Fermi-LAT). The recent observations of the Suzaku X-ray satellite have revealed that some of these interacting gamma-ray-emitting SNRs, such as IC443, W49B, W44, and G359.1-0.5, have overionized plasmas. 3C 391 (G31.9+0.0) is another Galactic MM SNR interacting with MCs. It was observed in GeV gamma rays by Fermi-LAT as well as in the 0.3-10.0 keV X-ray band by Suzaku. In this work, 3C 391 was detected in GeV gamma rays with a significance of ?18? and we showed that the GeV emission is point-like in nature. The GeV gamma-ray spectrum was shown to be best explained by the decay of neutral pions assuming that the protons follow a broken power-law distribution. We revealed radiative recombination structures of silicon and sulfur from 3C 391 using Suzaku data. In this paper, we discuss the possible origin of this type of radiative plasma and hadronic gamma rays.

  11. Spatial optic multiplexer/diplexer

    DOE Patents [OSTI]

    Tremblay, Paul L.

    1991-01-01

    An apparatus for simultaneous transmission of optic signals having different wavelengths over a single optic fiber. Multiple light signals are transmitted through optic fibers that are formed into a circumference surrounding a central core fiber. The multiple light signals are directed by a lens into a single receiving fiber where the light combines and is then focused into the central core fiber which transmits the light to a wavelength discriminating receiver assembly.

  12. CHANDRA AND HST IMAGING OF THE QUASARS PKS B0106+013 AND 3C 345: INVERSE COMPTON X-RAYS AND MAGNETIZED JETS

    SciTech Connect (OSTI)

    Kharb, P.; Lister, M. L.; Hogan, B. S.; Marshall, H. L.

    2012-04-01

    We present results from deep ({approx}70 ks) Chandra/ACIS observations and Hubble Space Telescope (HST) Advanced Camera for Surveys F475W observations of two highly optically polarized quasars belonging to the MOJAVE blazar sample, viz., PKS B0106+013 and 1641+399 (3C 345). These observations reveal X-ray and optical emissions from the jets in both sources. X-ray emission is detected from the entire length of the 0106+013 radio jet, which shows clear bends or wiggles-the X-ray emission is brightest at the first prominent kiloparsec jet bend. A picture of a helical kiloparsec jet with the first kiloparsec-scale bend representing a jet segment moving close(r) to our line of sight, and getting Doppler boosted at both radio and X-ray frequencies, is consistent with these observations. The X-ray emission from the jet end, however, peaks at about 0.''4 ({approx}3.4 kpc) upstream of the radio hot spot. Optical emission is detected both at the X-ray jet termination peak and at the radio hot spot. The X-ray jet termination peak is found upstream of the radio hot spot by around 0.''2 ({approx}1.3 kpc) in the short projected jet of 3C 345. HST optical emission is seen in an arc-like structure coincident with the bright radio hot spot, which we propose is a sharp (apparent) jet bend instead of a terminal point, that crosses our line of sight and consequently has a higher Doppler beaming factor. A weak radio hot spot is indeed observed less than 1'' downstream of the bright radio hot spot, but has no optical or X-ray counterpart. By making use of the parsec-scale radio and the kiloparsec-scale radio/X-ray data, we derive constraints on the jet Lorentz factors ({Gamma}{sub jet}) and inclination angles ({theta}): for a constant jet speed from parsec to kiloparsec scales, we obtain a {Gamma}{sub jet} of {approx}70 for 0106+013 and {approx}40 for 3C 345. On relaxing this assumption, we derive a {Gamma}{sub jet} of {approx}2.5 for both the sources. Upper limits on {theta} of {approx

  13. Optical Metrology Lab Receives New Funding for Upgrades

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

    are some of the best in the world, but unfortunately, environmental conditions are not as good as they could be." The Developmental Long Trace Profiler (DLTP) is a new surface...

  14. Support and maneuvering apparatus for solar energy receivers

    DOE Patents [OSTI]

    Murphy, L.M.

    1988-07-28

    A support and maneuvering apparatus is disclosed for a solar energy receiving device adapted for receiving and concentrating solar energy and having a central axis extending through the center thereof. The apparatus includes a frame for mounting the perimeter of said solar energy receiving device. A support member extends along the central axis of the receiving device and has a base end passing through the center of the receiving device and an outer distal end adapted for carrying a solar energy receiving and conversion mechanism. A variable tension mechanism interconnects the support member with the frame to provide stiffening for the support member and the frame and to assist in the alignment of the frame to optimize the optical efficiency of the solar energy receiving device. A rotatable base is provided, and connecting members extend from the base for pivotable attachment to the frame at spaced positions therealong. Finally, an elevation assembly is connected to the receiving device for selectively pivoting the receiving about an axis defined between the attachment positions of the connecting members on the frame. 4 figs.

  15. Support and maneuvering apparatus for solar energy receivers

    DOE Patents [OSTI]

    Murphy, Lawrence M.

    1989-01-01

    A support and maneuvering apparatus is disclosed for a solar energy receiving device adpated for receiving and concentrating solar energy and having a central axis extending through the center thereof. The apparatus includes a frame for mounting the perimeter of said solar energy receiving device. A support member extends along the central axis of the receiving device and has a base end passing through the center of the receiving device and an outer distal end adapted for carrying a solar energy receiving and conversion mechanism. A variable tension mechanism interconnects the support member with the frame to provide stiffening for the support member and the frame and to assist in the alignment of the frame to optimize the optical efficiency of the solar energy receiving device. A rotatable base is provided, and connecting members extend from the base for pivotable attachment to the frame at spaced positions therealong. Finally, an elevation assembly is connected to the receiving device for selectively pivoting the receiving device about an axis defined between the attachment positions of the connecting members on the frame.

  16. Test results for the Oasis 3C high performance water-pumping windmill

    SciTech Connect (OSTI)

    Eggleston, D.M.

    1997-12-31

    The WINDTech International, L.L.C. Oasis 3C, a 3 m diameter, high-performance water-pumping windmill, was tested at the DME Engineering Wind Test Site just south of Midland, Texas from August through December, 1996. This machine utilizes a 3:1 gearbox with rotating counterweights, similar to a conventional oilfield pumping unit, driven by a multibladed rotor. The rotating counterweight system balances most of the pumping loads and reduces gear loads and starting torque by a factor of at least two and often by a factor of four or more. The torque reduction substantially extends gear and bearing life, and reduces wind speeds required for starting by 30 to 50% or more. The O3C was tested pumping from a quiescent fluid depth of 12.2 m (40 ft) from a 28.3 m (93 ft)-deep well, with additional pumping depth simulated using a pressure regulator valve system. A 9.53 cm (3.75 in.) diameter Harbison-Fischer seal-less single-acting piston pump was used to eliminate pump seal friction as a variable, and standard O3C stroke lengths of 30.5 and 15.2 cm (12 and 6 inches) were used. The regulator spring was set to give a maximum stroke rate of 33 strokes per minute. The water pumped was returned to the well after flowing through a settling tank. The tests were performed in accordance with AWEA WECS testing standards. Instrumentation provided 16 channels of data to accurately measure machine performance, including starting wind speeds, flow rates, O3C azimuth, tail furl angle, wind direction tracking errors, RPM, sucker rod loads, and other variables. The most significant performance data is summarized herein. A mathematical model of machine performance was developed that fairly accurately predicts performance for each of three test conditions. The results verify that the O3C is capable of pumping water at wind speeds from 30% to more than 50% lower than comparable un-counterbalanced units.

  17. Central solar-energy receiver

    DOE Patents [OSTI]

    Not Available

    1981-10-27

    An improved tower-mounted central solar energy receiver for heating air drawn through the receiver by an induced draft fan is described. A number of vertically oriented, energy absorbing, fin-shaped slats are radially arranged in a number of concentric cylindrical arrays on top of the tower coaxially surrounding a pipe having air holes through which the fan draws air which is heated by the slats which receive the solar radiation from a heliostat field. A number of vertically oriented and wedge-shaped columns are radially arranged in a number of concentric cylindrical clusters surrounding the slat arrays. The columns have two mirror-reflecting sides to reflect radiation into the slat arrays and one energy absorbing side to reduce reradiation and reflection from the slat arrays.

  18. UWB communication receiver feedback loop

    DOE Patents [OSTI]

    Spiridon, Alex; Benzel, Dave; Dowla, Farid U.; Nekoogar, Faranak; Rosenbury, Erwin T.

    2007-12-04

    A novel technique and structure that maximizes the extraction of information from reference pulses for UWB-TR receivers is introduced. The scheme efficiently processes an incoming signal to suppress different types of UWB as well as non-UWB interference prior to signal detection. Such a method and system adds a feedback loop mechanism to enhance the signal-to-noise ratio of reference pulses in a conventional TR receiver. Moreover, sampling the second order statistical function such as, for example, the autocorrelation function (ACF) of the received signal and matching it to the ACF samples of the original pulses for each transmitted bit provides a more robust UWB communications method and system in the presence of channel distortions.

  19. MULTIWAVELENGTH OBSERVATIONS OF 3C 454.3. III. EIGHTEEN MONTHS OF AGILE MONITORING OF THE 'CRAZY DIAMOND'

    SciTech Connect (OSTI)

    Vercellone, S.; Romano, P.; Ferrari, A.; Chen, A. W.; Raiteri, C. M.; Villata, M.; Krimm, H.; Tiengo, A.; Venturi, T.; Giroletti, M.; Lister, M. L.

    2010-03-20

    GAMMA{sub XRT} = 1.33-2.04. In the 15-150 keV energy band, when detected, the source has an average flux of about 5 mCrab. GASP-WEBT monitored 3C 454.3 during the whole 2007-2008 period in the radio, millimeter, near-IR, and optical bands. The observations show an extremely variable behavior at all frequencies, with flux peaks almost simultaneous with those at higher energies. A correlation analysis between the optical and the gamma-ray fluxes shows that the gamma-optical correlation occurs with a time lag of tau = -0.4{sup +0.6}{sub -0.8} days, consistent with previous findings for this source. An analysis of 15 GHz and 43 GHz VLBI core radio flux observations in the period 2007 July-2009 February shows an increasing trend of the core radio flux, anti-correlated with the higher frequency data, allowing us to derive the value of the source magnetic field. Finally, the modeling of the broadband spectral energy distributions for the still unpublished data, and the behavior of the long-term light curves in different energy bands, allow us to compare the jet properties during different emission states, and to study the geometrical properties of the jet on a time-span longer than one year.

  20. CBFO Manager Receives ESGR Award

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

    U.S. Department of Energy Carlsbad Field Office Waste Isolation Pilot Plant P.O. Box 3090 Carlsbad, New Mexico 88221 For Immediate Release CBFO Manager Receives ESGR Honor CARLSBAD, N.M., July 8, 2013 - Department of Energy (DOE) Carlsbad Field Office (CBFO) Manager Joe Franco receives the Employer Support of the Guard and Reserve (ESGR) Seven Seals Award in June at a New Mexico ESGR recognition event in Carlsbad, N.M. From left: Assistant Adjutant General for Air and Commander of the New

  1. Omnidirectional fiber optic tiltmeter

    DOE Patents [OSTI]

    Benjamin, B.C.; Miller, H.M.

    1983-06-30

    A tiltmeter is provided which is useful in detecting very small movements such as earth tides. The device comprises a single optical fiber, and an associated weight affixed thereto, suspended from a support to form a pendulum. A light source, e.g., a light emitting diode, mounted on the support transmits light through the optical fiber to a group of further optical fibers located adjacent to but spaced from the free end of the single optical fiber so that displacement of the single optical fiber with respect to the group will result in a change in the amount of light received by the individual optical fibers of the group. Photodetectors individually connectd to the fibers produce corresponding electrical outputs which are differentially compared and processed to produce a resultant continuous analog output representative of the amount and direction of displacement of the single optical fiber.

  2. RFID receiver apparatus and method

    DOE Patents [OSTI]

    Scott, Jeffrey Wayne

    2006-12-26

    An RFID backscatter interrogator for transmitting data to an RFID tag, generating a carrier for the tag, and receiving data from the tag modulated onto the carrier, the interrogator including a single grounded-coplanar wave-guide circuit board and at least one surface mount integrated circuit supported by the circuit board.

  3. Atomic configuration of irradiation-induced planar defects in 3C-SiC

    SciTech Connect (OSTI)

    Lin, Y. R. [Department of Engineering and System Science, National Tsing-Hua University, Hsinchu 30013, Taiwan (China); National Synchrotron Radiation Center, 101 Hsin-Ann Road, Hsinchu Science Park, Hsinchu 30076, Taiwan (China); Ho, C. Y. [Institute of Nuclear Engineering and Science, National Tsing-Hua University, Hsinchu 30013, Taiwan (China); Hsieh, C. Y.; Chang, M. T.; Lo, S. C. [Material and Chemical Research Laboratories, Industrial Technology Research Institute, Hsinchu 31040, Taiwan (China); Chen, F. R. [Department of Engineering and System Science, National Tsing-Hua University, Hsinchu 30013, Taiwan (China); Kai, J. J., E-mail: ceer0001@gmail.com [Department of Engineering and System Science, National Tsing-Hua University, Hsinchu 30013, Taiwan (China); Institute of Nuclear Engineering and Science, National Tsing-Hua University, Hsinchu 30013, Taiwan (China)

    2014-03-24

    The atomic configuration of irradiation-induced planar defects in single crystal 3C-SiC at high irradiation temperatures was shown in this research. A spherical aberration corrected scanning transmission electron microscope provided images of individual silicon and carbon atoms by the annular bright-field (ABF) method. Two types of irradiation-induced planar defects were observed in the ABF images including the extrinsic stacking fault loop with two offset Si-C bilayers and the intrinsic stacking fault loop with one offset Si-C bilayer. The results are in good agreement with images simulated under identical conditions.

  4. Optical contact micrometer

    DOE Patents [OSTI]

    Jacobson, Steven D.

    2014-08-19

    Certain examples provide optical contact micrometers and methods of use. An example optical contact micrometer includes a pair of opposable lenses to receive an object and immobilize the object in a position. The example optical contact micrometer includes a pair of opposable mirrors positioned with respect to the pair of lenses to facilitate viewing of the object through the lenses. The example optical contact micrometer includes a microscope to facilitate viewing of the object through the lenses via the mirrors; and an interferometer to obtain one or more measurements of the object.

  5. Magneto-optic current sensor

    SciTech Connect (OSTI)

    Lanagan, Michael T.; Valsko-Vlasov, Vitalii K.; Fisher, Brandon L.; Welp, Ulrich

    2003-10-07

    An optical current transducer configured to sense current in the conductor is disclosed. The optical current transducer includes a light source and a polarizer that generates linearly polarized light received from a the light source. The light is communicated to a magneto-optic garnet that includes, among other elements, bismuth, iron and oxygen and is coupled to the conductor. The magneto-optic garnet is configured to rotate the polarization of the linearly polarized light received from the polarizer. The optical current transducer also includes an analyzer in optical communication with the magneto-optic garnet. The analyzer detects the rotation of the linearly polarized light caused by the magneto-optic garnet.

  6. DISCOVERY OF GIANT RELIC RADIO LOBES STRADDLING THE CLASSICAL DOUBLE RADIO GALAXY 3C452

    SciTech Connect (OSTI)

    Sirothia, S. K.; Gopal-Krishna; Wiita, Paul J. E-mail: krishna@ncra.tifr.res.in

    2013-03-01

    We report the discovery of a pair of megaparsec size radio lobes of extremely steep spectrum straddling the well-known classical double radio source 3C452. The existence of such fossil lobes was unexpected since for the past several decades this powerful radio galaxy has been regarded as a textbook example of an edge-brightened double radio source of Fanaroff-Riley type II (FR II), which we now show to be a bona fide ''double-double'' radio galaxy (DDRG). Thus, 3C452 presents a uniquely robust example of recurrent nuclear activity in which the restarted jets are expanding non-relativistically within the relic synchrotron plasma from an earlier active phase and hence the inner double fed by them has evolved into a perfectly normal FR II radio source. This situation contrasts markedly with the strikingly narrow inner doubles observed in a few other DDRGs that have been interpreted in terms of compression of the synchrotron plasma of the relic outer lobes at the relativistic bow-shocks driven by the near ballistic propagation of the two inner jets through the relic plasma. A key ramification of this finding is that it cautions against the currently widespread use of FR II classical double radio sources for testing cosmological models and unification schemes for active galactic nuclei.

  7. Hints of correlation between broad-line and radio variations for 3C 120

    SciTech Connect (OSTI)

    Liu, H. T.; Bai, J. M.; Li, S. K.; Wang, J. M.

    2014-01-01

    In this paper, we investigate the correlation between broad-line and radio variations for the broad-line radio galaxy 3C 120. By the z-transformed discrete correlation function method and the model-independent flux randomization/random subset selection (FR/RSS) Monte Carlo method, we find that broad Hβ line variations lead the 15 GHz variations. The FR/RSS method shows that the Hβ line variations lead the radio variations by a factor of τ{sub ob} = 0.34 ± 0.01 yr. This time lag can be used to locate the position of the emitting region of radio outbursts in the jet, on the order of ∼5 lt-yr from the central engine. This distance is much larger than the size of the broad-line region. The large separation of the radio outburst emitting region from the broad-line region will observably influence the gamma-ray emission in 3C 120.

  8. SAW correlator spread spectrum receiver

    DOE Patents [OSTI]

    Brocato, Robert W

    2014-04-01

    A surface acoustic wave (SAW) correlator spread-spectrum (SS) receiver is disclosed which utilizes a first demodulation stage with a chip length n and a second demodulation stage with a chip length m to decode a transmitted SS signal having a code length l=n.times.m which can be very long (e.g. up to 2000 chips or more). The first demodulation stage utilizes a pair of SAW correlators which demodulate the SS signal to generate an appropriate code sequence at an intermediate frequency which can then be fed into the second demodulation stage which can be formed from another SAW correlator, or by a digital correlator. A compound SAW correlator comprising two input transducers and a single output transducer is also disclosed which can be used to form the SAW correlator SS receiver, or for use in processing long code length signals.

  9. receive DOE Early Career Award

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

    researcher Joel Rowland to receive DOE Early Career Award May 8, 2014 Research focuses on land surface dynamics in Arctic environments LOS ALAMOS, N.M., May 8, 2014-Los Alamos National Laboratory researcher Joel Rowland is one of 35 national recipients of 2014 Early Career Research Program awards from the Department of Energy. Rowland's research was recognized by DOE's Office of Biological and Environmental Research for incorporating hydrological controls on carbon cycling in flood plain

  10. Digital-data receiver synchronization

    DOE Patents [OSTI]

    Smith, Stephen F.; Turner, Gary W.

    2005-08-02

    Digital-data receiver synchronization is provided with composite phase-frequency detectors, mutually cross-connected comparison feedback or both to provide robust reception of digital data signals. A single master clock can be used to provide frequency signals. Advantages can include fast lock-up time in moderately to severely noisy conditions, greater tolerance to noise and jitter when locked, and improved tolerance to clock asymmetries.

  11. Multichannel optical sensing device

    DOE Patents [OSTI]

    Selkowitz, S.E.

    1985-08-16

    A multichannel optical sensing device is disclosed, for measuring the outdoor sky luminance or illuminance or the luminance or illuminance distribution in a room, comprising a plurality of light receptors, an optical shutter matrix including a plurality of liquid crystal optical shutter elements operable by electrical control signals between light transmitting and light stopping conditions, fiber optical elements connected between the receptors and the shutter elements, a microprocessor based programmable control unit for selectively supplying control signals to the optical shutter elements in a programmable sequence, a photodetector including an optical integrating spherical chamber having an input port for receiving the light from the shutter matrix and at least one detector element in the spherical chamber for producing output signals corresponding to the light, and output units for utilizing the output signals including a storage unit having a control connection to the microprocessor based programmable control unit for storing the output signals under the sequence control of the programmable control unit.

  12. Multichannel optical sensing device

    DOE Patents [OSTI]

    Selkowitz, Stephen E.

    1990-01-01

    A multichannel optical sensing device is disclosed, for measuring the outr sky luminance or illuminance or the luminance or illuminance distribution in a room, comprising a plurality of light receptors, an optical shutter matrix including a plurality of liquid crystal optical shutter elements operable by electrical control signals between light transmitting and light stopping conditions, fiber optic elements connected between the receptors and the shutter elements, a microprocessor based programmable control unit for selectively supplying control signals to the optical shutter elements in a programmable sequence, a photodetector including an optical integrating spherical chamber having an input port for receiving the light from the shutter matrix and at least one detector element in the spherical chamber for producing output signals corresponding to the light, and output units for utilizing the output signals including a storage unit having a control connection to the microprocessor based programmable control unit for storing the output signals under the sequence control of the programmable control unit.

  13. Effective defect diffusion lengths in Ar-ion bombarded 3C-SiC

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

    Bayu Aji, L. B.; Wallace, J. B.; Shao, L.; Kucheyev, S. O.

    2016-04-14

    Above room temperature, SiC exhibits pronounced processes of diffusion and interaction of radiation-generated point defects. Here, we use the recently developed pulsed ion beam method to measure effective defect diffusion lengths in 3C-SiC bombarded in the temperature range of 25–200 °C with 500 keV Ar ions. Results reveal a diffusion length of ~10 nm, which exhibits a weak temperature dependence, changing from 9 to 13 nm with increasing temperature. Lastly, these results have important implications for understanding and predicting radiation damage in SiC and for the development of radiation-resistant materials via interface-mediated defect reactions.

  14. Ti 3 C 2 T x (MXene)–polyacrylamide nanocomposite films

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

    Naguib, Michael; Saito, Tomonori; Lai, Sophia; Rager, Matthew S.; Aytug, Tolga; Parans Paranthaman, M.; Zhao, Meng-Qiang; Gogotsi, Yury

    2016-07-20

    Polymer nanocomposite films are of great interest due to their enhanced properties over base polymers. By incorporating 2D titanium carbide a representative of a new family of 2D materials, MXenes, as nanofillers into a water soluble polyacrylamide (PAM) matrix, the resulting films benefit from the flexibility, robustness, and processability of PAM, as well as the conductivity and mechanical properties of MXene fillers. We report on manufacturing and characterization of MXene-PAM nanocomposite films. Dimethylsulfoxide (DMSO) intercalation in-between the Ti3C2-based MXene layers led to full delamination of the MXene layers and hence a uniform dispersion of hydrophilic MXene nanosheets in aqueous PAMmore » solutions was achieved. Moreover, the polymer composite solutions of up to 75 wt.% MXene loading were sonicated and cast onto large Teflon trays and dried at room temperature to produce shiny black films. The observation of reduced 0002 peaks of Ti3C2Tx phase in X-ray diffraction patterns and TEM images indicate the presence of well dispersed nanoflakes. The as-prepared composite films are flexible and the conductivity was increased significantly to 3 x 10-3 S cm-1 for 6 wt. % MXene-PAM films. With high MXene loading, some non-uniformity between the top and bottom surfaces was observed. This could be due to the segregation of MXene layers in composite films during drying. Finally, the power law dependence of conductivity above the percolation threshold is presented through detailed conductivity measurements.« less

  15. LM Receives Sustainability Award | Department of Energy

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

    Receives Sustainability Award LM Receives Sustainability Award January 8, 2013 - 1:17pm Addthis Award ceremony (left to right): Melvin G. Williams, Jr., Associate Deputy Secretary, ...

  16. 3C 220.3: A radio galaxy lensing a submillimeter galaxy

    SciTech Connect (OSTI)

    Haas, Martin; Westhues, Christian; Chini, Rolf; Leipski, Christian; Klaas, Ulrich; Meisenheimer, Klaus; Barthel, Peter; Koopmans, Lon V. E.; Wilkes, Belinda J.; Bussmann, R. Shane; Willner, S. P.; Ashby, Matthew L. N.; Kuraszkiewicz, Joanna; Vegetti, Simona; Clements, David L.; Fassnacht, Christopher D.; Horesh, Assaf; Lagattuta, David J.; Stern, Daniel; Wylezalek, Dominika

    2014-07-20

    Herschel Space Observatory photometry and extensive multiwavelength follow-up have revealed that the powerful radio galaxy (PRG) 3C 220.3 at z = 0.685 acts as a gravitational lens for a background submillimeter galaxy (SMG) at z = 2.221. At an observed wavelength of 1 mm, the SMG is lensed into three distinct images. In the observed near infrared, these images are connected by an arc of ?1''.8 radius forming an Einstein half-ring centered near the radio galaxy. In visible light, only the arc is apparent. 3C 220.3 is the only known instance of strong galaxy-scale lensing by a PRG not located in a galaxy cluster and therefore it offers the potential to probe the dark matter content of the radio galaxy host. Lens modeling rejects a single lens, but two lenses centered on the radio galaxy host A and a companion B, separated by 1''.5, provide a fit consistent with all data and reveal faint candidates for the predicted fourth and fifth images. The model does not require an extended common dark matter halo, consistent with the absence of extended bright X-ray emission on our Chandra image. The projected dark matter fractions within the Einstein radii of A (1''.02) and B (0''.61) are about 0.4 0.3 and 0.55 0.3. The mass to i-band light ratios of A and B, M/L{sub i}?84 M{sub ?} L{sub ?}{sup ?1}, appear comparable to those of radio-quiet lensing galaxies at the same redshift in the CfA-Arizona Space Telescope LEns Survey, Lenses Structure and Dynamics, and Strong Lenses in the Legacy Survey samples. The lensed SMG is extremely bright with observed f(250 ?m) = 440 mJy owing to a magnification factor ? ? 10. The SMG spectrum shows luminous, narrow C IV ?1549 emission, revealing that the SMG houses a hidden quasar in addition to a violent starburst. Multicolor image reconstruction of the SMG indicates a bipolar morphology of the emitted ultraviolet (UV) light suggestive of cones through which UV light escapes a dust-enshrouded nucleus.

  17. Norwich Technologies' Advanced Low-Cost Receivers for Parabolic Troughs

    SciTech Connect (OSTI)

    Stettenheim, Joel; McBride, Troy O.; Brambles, Oliver J.; Cashin, Emil A.

    2013-12-31

    This report summarizes the successful results of our SunShot project, Advanced Low-Cost Receivers for Parabolic Troughs. With a limited budget of $252K and in only 12 months, we have (1) developed validated optical and thermal models and completed rigorous optimization analysis to identify key performance characteristics as part of developing first-generation laboratory prototype designs, (2) built optical and thermal laboratory prototypes and test systems with associated innovative testing protocols, and (3) performed extensive statistically relevant testing. We have produced fully functioning optical and thermal prototypes and accurate, validated models shown to capture important underlying physical mechanisms. The test results from the first-generation prototype establish performance exceeding the FOA requirement of thermal efficiency >90% for a CSP receiver while delivering an exit fluid temperature of > 650 °C and a cost < $150/kWth. Our vacuum-free SunTrap receiver design provides improvements over conventional vacuum-tube collectors, allowing dramatic reductions in thermal losses at high operating temperature.

  18. Ab initio study of point defects near stacking faults in 3C-SiC

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

    Xi, Jianqi; Liu, Bin; Zhang, Yanwen; Weber, William J.

    2016-07-02

    Interactions between point defects and stacking faults in 3C-SiC are studied using an ab initio method based on density functional theory. The results show that the discontinuity of the stacking sequence considerably affects the configurations and behavior of intrinsic defects, especially in the case of silicon interstitials. The existence of an intrinsic stacking fault (missing a C-Si bilayer) shortens the distance between the tetrahedral-center site and its second-nearest-neighboring silicon layer, making the tetrahedral silicon interstitial unstable. Instead of a tetrahedral configuration with four C neighbors, a pyramid-like interstitial structure with a defect state within the band gap becomes a stablemore » configuration. In addition, orientation rotation occurs in the split interstitials that has diverse effects on the energy landscape of silicon and carbon split interstitials in the stacking fault region. Moreover, our analyses of ionic relaxation and electronic structure of vacancies show that the built-in strain field, owing to the existence of the stacking fault, makes the local environment around vacancies more complex than that in the bulk.« less

  19. Systems Analysis of an Advanced Nuclear Fuel Cycle Based on a Modified UREX+3c Process

    SciTech Connect (OSTI)

    E. R. Johnson; R. E. Best

    2009-12-28

    The research described in this report was performed under a grant from the U.S. Department of Energy (DOE) to describe and compare the merits of two advanced alternative nuclear fuel cycles -- named by this study as the “UREX+3c fuel cycle” and the “Alternative Fuel Cycle” (AFC). Both fuel cycles were assumed to support 100 1,000 MWe light water reactor (LWR) nuclear power plants operating over the period 2020 through 2100, and the fast reactors (FRs) necessary to burn the plutonium and minor actinides generated by the LWRs. Reprocessing in both fuel cycles is assumed to be based on the UREX+3c process reported in earlier work by the DOE. Conceptually, the UREX+3c process provides nearly complete separation of the various components of spent nuclear fuel in order to enable recycle of reusable nuclear materials, and the storage, conversion, transmutation and/or disposal of other recovered components. Output of the process contains substantially all of the plutonium, which is recovered as a 5:1 uranium/plutonium mixture, in order to discourage plutonium diversion. Mixed oxide (MOX) fuel for recycle in LWRs is made using this 5:1 U/Pu mixture plus appropriate makeup uranium. A second process output contains all of the recovered uranium except the uranium in the 5:1 U/Pu mixture. The several other process outputs are various waste streams, including a stream of minor actinides that are stored until they are consumed in future FRs. For this study, the UREX+3c fuel cycle is assumed to recycle only the 5:1 U/Pu mixture to be used in LWR MOX fuel and to use depleted uranium (tails) for the makeup uranium. This fuel cycle is assumed not to use the recovered uranium output stream but to discard it instead. On the other hand, the AFC is assumed to recycle both the 5:1 U/Pu mixture and all of the recovered uranium. In this case, the recovered uranium is reenriched with the level of enrichment being determined by the amount of recovered plutonium and the combined amount

  20. Nanoscale elastic changes in 2D Ti3C2Tx (MXene) pseudocapacitive electrodes

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

    Come, Jeremy; Xie, Yu; Naguib, Michael; Jesse, Stephen; Kalinin, Sergei V.; Gogotsi, Yury; Kent, Paul R. C.; Balke, Nina

    2016-02-01

    Designing sustainable electrodes for next generation energy storage devices relies on the understanding of their fundamental properties at the nanoscale, including the comprehension of ions insertion into the electrode and their interactions with the active material. One consequence of ion storage is the change in the electrode volume resulting in mechanical strain and stress that can strongly affect the cycle life. Therefore, it is important to understand the changes of dimensions and mechanical properties occurring during electrochemical reactions. While the characterization of mechanical properties via macroscopic measurements is well documented, in-situ characterization of their evolution has never been achieved atmore » the nanoscale. Two dimensional (2D) carbides, known as MXenes, are promising materials for supercapacitors and various kinds of batteries, and understating the coupling between their mechanical and electrochemical properties is therefore necessary. Here we report on in-situ imaging, combined with density functional theory of the elastic changes, of a 2D titanium carbide (Ti3C2Tx) electrode in direction normal to the basal plane during cation intercalation. The results show a strong correlation between the Li+ ions content and the elastic modulus, whereas little effects of K+ ions are observed. Moreover, this strategy enables identifying the preferential intercalation pathways within a single particle.« less

  1. Photolysis rates in correlated overlapping cloud fields: Cloud-J 7.3c

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

    Prather, M. J.

    2015-08-14

    A new approach for modeling photolysis rates (J values) in atmospheres with fractional cloud cover has been developed and is implemented as Cloud-J – a multi-scattering eight-stream radiative transfer model for solar radiation based on Fast-J. Using observations of the vertical correlation of cloud layers, Cloud-J 7.3c provides a practical and accurate method for modeling atmospheric chemistry. The combination of the new maximum-correlated cloud groups with the integration over all cloud combinations by four quadrature atmospheres produces mean J values in an atmospheric column with root mean square (rms) errors of 4 % or less compared with 10–20 % errorsmore » using simpler approximations. Cloud-J is practical for chemistry–climate models, requiring only an average of 2.8 Fast-J calls per atmosphere vs. hundreds of calls with the correlated cloud groups, or 1 call with the simplest cloud approximations. Another improvement in modeling J values, the treatment of volatile organic compounds with pressure-dependent cross sections, is also incorporated into Cloud-J.« less

  2. An XMM-Newton view of the radio galaxy 3C 411

    SciTech Connect (OSTI)

    Bostrom, Allison; Reynolds, Christopher S.; Tombesi, Francesco

    2014-08-20

    We present the first high signal-to-noise XMM-Newton observations of the broad-line radio galaxy 3C 411. After fitting various spectral models, an absorbed double power-law (PL) continuum and a blurred relativistic disk reflection model (kdblur) are found to be equally plausible descriptions of the data. While the softer PL component (Γ = 2.11) of the double PL model is entirely consistent with that found in Seyfert galaxies (and hence likely originates from a disk corona), the additional PL component is very hard (Γ = 1.05); amongst the active galactic nucleus zoo, only flat-spectrum radio quasars (FSRQ) have such hard spectra. Together with the flat radio-spectrum displayed by this source, we suggest that it should instead be classified as an FSRQ. This leads to potential discrepancies regarding the jet inclination angle, with the radio morphology suggesting a large jet inclination but the FSRQ classification suggesting small inclinations. The kdblur model predicts an inner disk radius of at most 20 r {sub g} and relativistic reflection.

  3. Nanowire-density-dependent field emission of n-type 3C-SiC nanoarrays

    SciTech Connect (OSTI)

    Wang, Lin; Gao, Fengmei; Chen, Shanliang; Yang, Weiyou; Li, Chengming

    2015-09-21

    The density of the nanowires is one of the key issues for their field emission (FE) properties of the nanoarrays, since it plays an important role on the electron emission sites and field screening effect. Here, we reported the nanowire-density-dependent FE properties of the n-type 3C-SiC nanoarrays. The highly oriented and large-scale SiC nanoarrays were grown on the 6H-SiC wafer via pyrolysis of polyureasilazane by adjusting the thicknesses of Au films used as the catalysts. The densities of the nanoarrays were tunable to be ∼2.9 × 10{sup 7}, ∼4.0 × 10{sup 7}, and ∼5.7 × 10{sup 7} nanowires/cm{sup 2} by controlling the Au film thicknesses of 50, 70, and 90 nm, respectively. The measured FE characteristics disclosed that the turn-on fields of the samples could be tailored to be of ∼1.79, 1.57, and 1.95 V/μm with the increase of the densities, suggesting that a suitable nanowire density could favor the enhanced electron emission from the SiC nanoarrays with improved emission sites and limited field screening effects.

  4. System and method for linearly amplifying optical analog signals by backward Raman scattering

    DOE Patents [OSTI]

    Lin, Cheng-Heui

    1988-01-01

    A system for linearly amplifying an optical analog signal by backward stimulated Raman scattering comprises a laser source for generating a pump pulse; and an optic fiber having two opposed apertures, a first aperture for receiving the pump pulse and a second aperture for receiving the optical analog signal, wherein the optical analog signal is linearly amplified to an amplified optical analog signal.

  5. System and method for linearly amplifying optical analog signals by backward Raman scattering

    DOE Patents [OSTI]

    Lin, Cheng-Heui

    1988-07-05

    A system for linearly amplifying an optical analog signal by backward stimulated Raman scattering comprises a laser source for generating a pump pulse; and an optic fiber having two opposed apertures, a first aperture for receiving the pump pulse and a second aperture for receiving the optical analog signal, wherein the optical analog signal is linearly amplified to an amplified optical analog signal.

  6. Dimensional isotropy of 6H and 3C SiC under neutron irradiation

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

    Snead, Lance L.; Katoh, Yutai; Koyanagi, Takaaki; Terrani, Kurt A.; Specht, Eliot D.

    2016-01-16

    This investigation experimentally determines the as-irradiated crystal axes dimensional change of the common polytypes of SiC considered for nuclear application. Single crystal α-SiC (6H), β-SiC (3C), CVD β-SiC, and single crystal Si have been neutron irradiated near 60 °C from 2 × 1023 to 2 × 1026 n/m2 (E > 0.1 MeV), or about 0.02–20 dpa, in order to study the effect of irradiation on bulk swelling and strain along independent crystalline axes. Single crystal, powder diffractometry and density measurement have been carried out. For all neutron doses where the samples remained crystalline all SiC materials demonstrated equivalent swelling behavior.more » Moreover the 6H–SiC expanded isotropically. The magnitude of the swelling followed a ~0.77 power law against dose consistent with a microstructure evolution driven by single interstitial (carbon) mobility. Extraordinarily large ~7.8% volume expansion in SiC was observed prior to amorphization. Above ~0.9 × 1025 n/m2 (E > 0.1 MeV) all SiC materials became amorphous with an identical swelling: a 11.7% volume expansion, lowering the density to 2.84 g/cm3. As a result, the as-amorphized density was the same at the 2 × 1025 and 2 × 1026 n/m2 (E > 0.1 MeV) dose levels.« less

  7. Optical fiber stripper positioning apparatus

    DOE Patents [OSTI]

    Fyfe, Richard W.; Sanchez, Jr., Amadeo

    1990-01-01

    An optical fiber positioning apparatus for an optical fiber stripping device is disclosed which is capable of providing precise axial alignment between an optical fiber to be stripped of its outer jacket and the cutting blades of a stripping device. The apparatus includes a first bore having a width approximately equal to the diameter of an unstripped optical fiber and a counter bore axially aligned with the first bore and dimensioned to precisely receive a portion of the stripping device in axial alignment with notched cutting blades within the stripping device to thereby axially align the notched cutting blades of the stripping device with the axis of the optical fiber to permit the notched cutting blades to sever the jacket on the optical fiber without damaging the cladding on the optical fiber. In a preferred embodiment, the apparatus further includes a fiber stop which permits determination of the length of jacket to be removed from the optical fiber.

  8. Final Optics

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

    final optics Final Optics Schematic layout of NIF's final optics assembly (FOA). The suite of optics for one beamline is on the right. The final optics assemblies (FOAs) are the last element of the main laser system and the first of the target area systems. Each FOA contains four integrated optics modules (IOMs) that incorporate beam conditioning, frequency conversion, focusing, diagnostic sampling, and debris shielding capabilities into a single compact assembly. These optics are shown in the

  9. Argonne receives 2014 Illinois Governor's Sustainability Award...

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

    receives 2014 Illinois Governor's Sustainability Award By Else Tennessen * November 10, ... Illinois Sustainable Technology Center's 2014 Illinois Governor's Sustainability Award. ...

  10. FERMI RULES OUT THE INVERSE COMPTON/CMB MODEL FOR THE LARGE-SCALE JET X-RAY EMISSION OF 3C 273

    SciTech Connect (OSTI)

    Meyer, Eileen T.; Georganopoulos, Markos

    2014-01-10

    The X-ray emission mechanism in large-scale jets of powerful radio quasars has been a source of debate in recent years, with two competing interpretations: either the X-rays are of synchrotron origin, arising from a different electron energy distribution than that producing the radio to optical synchrotron component, or they are due to inverse Compton scattering of cosmic microwave background photons (IC/CMB) by relativistic electrons in a powerful relativistic jet with bulk Lorentz factor ? ? 10-20. These two models imply radically different conditions in the large-scale jet in terms of jet speed, kinetic power, and maximum energy of the particle acceleration mechanism, with important implications for the impact of the jet on the large-scale environment. A large part of the X-ray origin debate has centered on the well-studied source 3C 273. Here we present new observations from Fermi which put an upper limit on the gamma-ray flux from the large-scale jet of 3C 273 that violates at a confidence greater that 99.9% the flux expected from the IC/CMB X-ray model found by extrapolation of the UV to X-ray spectrum of knot A, thus ruling out the IC/CMB interpretation entirely for this source when combined with previous work. Further, this upper limit from Fermi puts a limit on the Doppler beaming factor of at least ? <9, assuming equipartition fields, and possibly as low as ? <5, assuming no major deceleration of the jet from knots A throughD1.

  11. High throughput optical scanner

    DOE Patents [OSTI]

    Basiji, David A. (Seattle, WA); van den Engh, Gerrit J. (Seattle, WA)

    2001-01-01

    A scanning apparatus is provided to obtain automated, rapid and sensitive scanning of substrate fluorescence, optical density or phosphorescence. The scanner uses a constant path length optical train, which enables the combination of a moving beam for high speed scanning with phase-sensitive detection for noise reduction, comprising a light source, a scanning mirror to receive light from the light source and sweep it across a steering mirror, a steering mirror to receive light from the scanning mirror and reflect it to the substrate, whereby it is swept across the substrate along a scan arc, and a photodetector to receive emitted or scattered light from the substrate, wherein the optical path length from the light source to the photodetector is substantially constant throughout the sweep across the substrate. The optical train can further include a waveguide or mirror to collect emitted or scattered light from the substrate and direct it to the photodetector. For phase-sensitive detection the light source is intensity modulated and the detector is connected to phase-sensitive detection electronics. A scanner using a substrate translator is also provided. For two dimensional imaging the substrate is translated in one dimension while the scanning mirror scans the beam in a second dimension. For a high throughput scanner, stacks of substrates are loaded onto a conveyor belt from a tray feeder.

  12. Quantum Optics

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

    Energy Frontier Research Centers: Solid-State Lighting Science Center for Frontiers of ... Quantum Optics HomeEnergy ResearchEFRCsSolid-State Lighting Science EFRCQuantum Optics ...

  13. Optical apparatus for forming correlation spectrometers and optical processors

    DOE Patents [OSTI]

    Butler, M.A.; Ricco, A.J.; Sinclair, M.B.; Senturia, S.D.

    1999-05-18

    Optical apparatus is disclosed for forming correlation spectrometers and optical processors. The optical apparatus comprises one or more diffractive optical elements formed on a substrate for receiving light from a source and processing the incident light. The optical apparatus includes an addressing element for alternately addressing each diffractive optical element thereof to produce for one unit of time a first correlation with the incident light, and to produce for a different unit of time a second correlation with the incident light that is different from the first correlation. In preferred embodiments of the invention, the optical apparatus is in the form of a correlation spectrometer; and in other embodiments, the apparatus is in the form of an optical processor. In some embodiments, the optical apparatus comprises a plurality of diffractive optical elements on a common substrate for forming first and second gratings that alternately intercept the incident light for different units of time. In other embodiments, the optical apparatus includes an electrically-programmable diffraction grating that may be alternately switched between a plurality of grating states thereof for processing the incident light. The optical apparatus may be formed, at least in part, by a micromachining process. 24 figs.

  14. Optical apparatus for forming correlation spectrometers and optical processors

    DOE Patents [OSTI]

    Butler, Michael A.; Ricco, Antonio J.; Sinclair, Michael B.; Senturia, Stephen D.

    1999-01-01

    Optical apparatus for forming correlation spectrometers and optical processors. The optical apparatus comprises one or more diffractive optical elements formed on a substrate for receiving light from a source and processing the incident light. The optical apparatus includes an addressing element for alternately addressing each diffractive optical element thereof to produce for one unit of time a first correlation with the incident light, and to produce for a different unit of time a second correlation with the incident light that is different from the first correlation. In preferred embodiments of the invention, the optical apparatus is in the form of a correlation spectrometer; and in other embodiments, the apparatus is in the form of an optical processor. In some embodiments, the optical apparatus comprises a plurality of diffractive optical elements on a common substrate for forming first and second gratings that alternately intercept the incident light for different units of time. In other embodiments, the optical apparatus includes an electrically-programmable diffraction grating that may be alternately switched between a plurality of grating states thereof for processing the incident light. The optical apparatus may be formed, at least in part, by a micromachining process.

  15. Projection optics box

    DOE Patents [OSTI]

    Hale, Layton C.; Malsbury, Terry; Hudyma, Russell M.; Parker, John M.

    2000-01-01

    A projection optics box or assembly for use in an optical assembly, such as in an extreme ultraviolet lithography (EUVL) system using 10-14 nm soft x-ray photons. The projection optics box utilizes a plurality of highly reflective optics or mirrors, each mounted on a precision actuator, and which reflects an optical image, such as from a mask, in the EUVL system onto a point of use, such as a target or silicon wafer, the mask, for example, receiving an optical signal from a source assembly, such as a developed from laser system, via a series of highly reflective mirrors of the EUVL system. The plurality of highly reflective optics or mirrors are mounted in a housing assembly comprised of a series of bulkheads having wall members secured together to form a unit construction of maximum rigidity. Due to the precision actuators, the mirrors must be positioned precisely and remotely in tip, tilt, and piston (three degrees of freedom), while also providing exact constraint.

  16. Small businesses serving LANL receive DOE awards

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

    Small businesses serving LANL receive DOE awards Small businesses serving LANL receive DOE awards Eberline Services, HukariAscendent Inc. and ARSEC Environmental LLC received Department of Energy small business awards for fiscal year 2011. June 11, 2012 Los Alamos National Laboratory sits on top of a once-remote mesa in northern New Mexico with the Jemez mountains as a backdrop to research and innovation covering multi-disciplines from bioscience, sustainable energy sources, to plasma physics

  17. Balancing radar receiver channels with commutation. (Conference...

    Office of Scientific and Technical Information (OSTI)

    Title: Balancing radar receiver channels with commutation. Abstract not provided. Authors: Doerry, Armin Walter Publication Date: 2015-01-01 OSTI Identifier: 1244859 Report ...

  18. Container Technologies Industries, LLC receives small business...

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

    Container Technologies ... Container Technologies Industries, LLC receives small business award The mp4 video format is not supported by this browser. Download video Captions: On...

  19. High-Flux Microchannel Solar Receiver

    Broader source: Energy.gov [DOE]

    This fact sheet describes a high-flux, microchannel solar receiver project awarded under the DOE's 2012 SunShot Concentrating Solar Power R&D award program. The team, led by Oregon State University, is working to demonstrate a microchannel-based solar receiver capable of absorbing high solar flux, while using a variety of liquid and gaseous working fluids. High-flux microchannel receivers have the potential to dramatically reduce the size and cost of a solar receiver by minimizing re-radiation and convective losses.

  20. Department of Energy Receives Highest Transportation Industry...

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

    WASHINGTON, DC - The U.S. Department of Energy (DOE) today received the Transportation Community Awareness and Emergency Response (TRANSCAER) Chairman's Award, one of industry's ...

  1. WIPP Receives New Emergency Response Vehicle

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

    February 19, 2015 WIPP Receives New Emergency Response Vehicle WIPP recently placed a new emergency response vehicle into service. The new fire engine "Engine 24" will enhance...

  2. Hanford Contractor Receives Awards for Safety

    Broader source: Energy.gov [DOE]

    RICHLAND, Wash. – A Hanford site contractor supporting EM’s cleanup program has again received a prestigious safety award from DOE’s Voluntary Protection Program (VPP).

  3. New Lab facility receives green building recognition

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

    All Issues submit New Lab facility receives green building recognition The Radiological Laboratory Utility Office Building is the first to achieve Leadership in Energy and ...

  4. Optical domain analog to digital conversion methods and apparatus

    DOE Patents [OSTI]

    Vawter, Gregory A

    2014-05-13

    Methods and apparatus for optical analog to digital conversion are disclosed. An optical signal is converted by mapping the optical analog signal onto a wavelength modulated optical beam, passing the mapped beam through interferometers to generate analog bit representation signals, and converting the analog bit representation signals into an optical digital signal. A photodiode receives an optical analog signal, a wavelength modulated laser coupled to the photodiode maps the optical analog signal to a wavelength modulated optical beam, interferometers produce an analog bit representation signal from the mapped wavelength modulated optical beam, and sample and threshold circuits corresponding to the interferometers produce a digital bit signal from the analog bit representation signal.

  5. Optical microspectrometer

    DOE Patents [OSTI]

    Sweatt, William C.; Christenson, Todd R.

    2004-05-25

    An optical microspectrometer comprises a grism to disperse the spectra in a line object. A single optical microspectrometer can be used to sequentially scan a planar object, such as a dye-tagged microchip. Because the optical microspectrometer is very compact, multiple optical microspectrometers can be arrayed to provide simultaneous readout across the width of the planar object The optical microspectrometer can be fabricated with lithographic process, such as deep X-ray lithography (DXRL), with as few as two perpendicular exposures.

  6. Laser warning receiver to identify the wavelength and angle of arrival of incident laser light

    DOE Patents [OSTI]

    Sinclair; Michael B.; Sweatt, William C.

    2010-03-23

    A laser warning receiver is disclosed which has up to hundreds of individual optical channels each optically oriented to receive laser light from a different angle of arrival. Each optical channel has an optical wedge to define the angle of arrival, and a lens to focus the laser light onto a multi-wavelength photodetector for that channel. Each multi-wavelength photodetector has a number of semiconductor layers which are located in a multi-dielectric stack that concentrates the laser light into one of the semiconductor layers according to wavelength. An electrical signal from the multi-wavelength photodetector can be processed to determine both the angle of arrival and the wavelength of the laser light.

  7. Liquid cooled fiber thermal radiation receiver

    DOE Patents [OSTI]

    Butler, Barry L.

    1987-01-01

    A radiation-to-thermal receiver apparatus for collecting radiation and converting it to thermal energy is disclosed. The invention includes a fibrous mat material which captures radiation striking the receiver. Captured radiation is removed from the fibrous mat material by a transparent fluid within which the material is bathed.

  8. Liquid cooled fiber thermal radiation receiver

    DOE Patents [OSTI]

    Butler, B.L.

    1985-03-29

    A radiation-to-thermal receiver apparatus for collecting radiation and converting it to thermal energy is disclosed. The invention includes a fibrous mat material which captures radiation striking the receiver. Captured radiation is removed from the fibrous mat material by a transparent fluid within which the material is bathed.

  9. In situ study of the R{bar 3}c-R{bar 3}m orientational disorder in calcite.

    SciTech Connect (OSTI)

    Antao, S. M.; Hassan, I.; Mulder, W. H.; Lee, P. L.; Toby, B. H.; X-Ray Science Division; Univ. of West Indies

    2009-01-01

    The temperature dependences of the crystal structure and intensities of the (113) and (211) reflections in calcite, CaCO{sub 3}, were studied using Rietveld structure refinements based on synchrotron powder X-ray diffraction data. Calcite transforms from R{bar 3}c to R{bar 3}m at about T{sub c} = 1240 K. A CO{sub 3} group occupies, statistically, two positions with equal frequency in the disordered R{bar 3}m phase, but with unequal frequency in the partially ordered R{bar 3}c phase. One position for the CO{sub 3} group is rotated by 180{sup o} with respect to the other. The unequal occupancy of the two orientations in the partially ordered R{bar 3}c phase is obtained directly from the occupancy factor, x, for the O1 site and gives rise to the order parameter, S = 2x - 1. The a cell parameter shows a negative thermal expansion at low T, followed by a plateau region at higher T, then a steeper contraction towards T{sub c}, where the CO{sub 3} groups disorder in a rapid process. Using a modified Bragg-Williams model, fits were obtained for the order parameter S, and for the intensities of the (113) and (211) reflections.

  10. Passive thermo-optic feedback for robust athermal photonic systems

    DOE Patents [OSTI]

    Rakich, Peter T.; Watts, Michael R.; Nielson, Gregory N.

    2015-06-23

    Thermal control devices, photonic systems and methods of stabilizing a temperature of a photonic system are provided. A thermal control device thermally coupled to a substrate includes a waveguide for receiving light, an absorption element optically coupled to the waveguide for converting the received light to heat and an optical filter. The optical filter is optically coupled to the waveguide and thermally coupled to the absorption element. An operating point of the optical filter is tuned responsive to the heat from the absorption element. When the operating point is less than a predetermined temperature, the received light is passed to the absorption element via the optical filter. When the operating point is greater than or equal to the predetermined temperature, the received light is transmitted out of the thermal control device via the optical filter, without being passed to the absorption element.

  11. Optical probe

    DOE Patents [OSTI]

    Hencken, Kenneth; Flower, William L.

    1999-01-01

    A compact optical probe is disclosed particularly useful for analysis of emissions in industrial environments. The instant invention provides a geometry for optically-based measurements that allows all optical components (source, detector, rely optics, etc.) to be located in proximity to one another. The geometry of the probe disclosed herein provides a means for making optical measurements in environments where it is difficult and/or expensive to gain access to the vicinity of a flow stream to be measured. Significantly, the lens geometry of the optical probe allows the analysis location within a flow stream being monitored to be moved while maintaining optical alignment of all components even when the optical probe is focused on a plurality of different analysis points within the flow stream.

  12. Optical keyboard

    DOE Patents [OSTI]

    Veligdan, James T.; Feichtner, John D.; Phillips, Thomas E.

    2001-01-01

    An optical keyboard includes an optical panel having optical waveguides stacked together. First ends of the waveguides define an inlet face, and opposite ends thereof define a screen. A projector transmits a light beam outbound through the waveguides for display on the screen as a keyboard image. A light sensor is optically aligned with the inlet face for sensing an inbound light beam channeled through the waveguides from the screen upon covering one key of the keyboard image.

  13. Strategic Petroleum Reserve Receives Prestigious Environmental Award

    Broader source: Energy.gov [DOE]

    The Department of Energy's Office of Fossil Energy announced today that the Strategic Petroleum Reserve has received the Most Valuable Pollution Prevention Project (MVP2) award from the National Pollution Prevention Roundtable for lowering potential greenhouse gas emissions.

  14. Lab suppliers receive Department of Energy awards

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

    Services of Santa Fe received DOE's Small Business of the Year award. Eberline conducted environmental drilling services at the Lab as well as gamma-ray spectroscopy analysis. The...

  15. WIPP Receives Top Mine Safety Award

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

    Top Mine Safety Award CARLSBAD, N.M., September 18, 2013 - The U.S. Department of Energy's (DOE) Waste Isolation Pilot Plant (WIPP) received top safety honors from the New Mexico...

  16. EM Field Office Manager Receives Military Honor

    Broader source: Energy.gov [DOE]

    EM Carlsbad Field Office (CBFO) Manager Joe Franco receives the Employer Support of the Guard and Reserve (ESGR) Seven Seals Award in June at a ESGR recognition event in Carlsbad, N.M.

  17. Solar central receiver systems comparative economics

    SciTech Connect (OSTI)

    Eicker, P J

    1980-04-01

    Several major conceptual design studies of solar central receiver systems and components have been completed in the last year. The results of these studies are used to compare the projected cost of electric power generation using central receiver systems with that of more conventional power generation. The cost estimate for a molten salt central receiver system is given. Levelized busbar energy cost is shown as a function of annual capacity factor indicating the fraction of the cost due to each of the subsystems. The estimated levelized busbar energy cost for a central receiver (70 to 90 mills per kilowatt hour) is compared with the levelized busbar energy cost for a new coal fired Rankine cycle plant. Sensitivities to the initial cost of coal and the delta fuel escalation are shown. (WHK)

  18. NREL: Concentrating Solar Power Research - Particle Receiver...

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

    Particle Receiver Integrated with a Fluidized Bed-Novel Components to Overcome Existing Barriers Advancing concentrating solar power (CSP) systems to the target cost of 0.06 per...

  19. Tom Harper receives cyber security award

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

    Harper receives cyber security award Tom Harper receives cyber security award The Charlene Douglass Memorial Award recognizes an individual's expertise, dedication, and significant contributions to information security. June 8, 2009 Los Alamos National Laboratory sits on top of a once-remote mesa in northern New Mexico with the Jemez mountains as a backdrop to research and innovation covering multi-disciplines from bioscience, sustainable energy sources, to plasma physics and new materials. Los

  20. Fry receives Charles W. Briggs Award

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

    Fry receives Charles W. Briggs Award Fry receives Charles W. Briggs Award The ASTM International Committee E07 on Nondestructive Testing has honored David Fry with the Charles W. Briggs Award. June 2, 2014 David Fry David Fry Fry was recognized for his continuous and outstanding contributions to the standards development work of the committee through its subcommittees, sections and task groups. The ASTM International Committee E07 on Nondestructive Testing has honored David Fry of Applied

  1. Janoschek receives Wolfram-Prandl Prize

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

    November » Janoschek receives Wolfram-Prandl Prize Janoschek receives Wolfram-Prandl Prize Janoschek honored for "his pioneering studies of the spin dynamics in chiral helimagnets and the development of a cryogen-free apparatus for spherical neutron polarimetry." November 6, 2014 Marc Janoschek Marc Janoschek Part of this research was performed using a novel device called MuPAD (Mu-Metal Polarization Analysis Device) that Janoschek designed and built during his thesis. Marc Janoschek

  2. Los Alamos scientist receives prestigious fellowship

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

    Los Alamos scientist receives prestigious fellowship Los Alamos scientist receives prestigious fellowship The American Association for the Advancement of Science (AAAS) has awarded the distinction of Fellow to Dave Morris. January 11, 2016 Dave Morris Dave Morris Contact Nick Njegomir Communications Office (505) 665-9394 Email "The AAAS fellowship is a great honor that recognizes Dave's prominence as a chemistry researcher and a scientific leader," said Carol Burns, Deputy Principal

  3. A handbook for solar central receiver design

    SciTech Connect (OSTI)

    Falcone, P.K.

    1986-12-01

    This Handbook describes central receiver technology for solar thermal power plants. It contains a description and assessment of the major components in a central receiver system configured for utility scale production of electricity using Rankine-cycle steam turbines. It also describes procedures to size and optimize a plant and discussed examples from recent system analyses. Information concerning site selection criteria, cost estimation, construction, and operation and maintenance is also included, which should enable readers to perform design analyses for specific applications.

  4. Mudundi R. Raju receives Padma Shri award

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

    Mudundi R. Raju receives Padma Shri award Mudundi R. Raju receives Padma Shri award The government of India honored Mudundi Raju for his distinguished service in science and engineering, providing cancer radiation treatment to the poor of rural India. July 18, 2013 President of India Pranab Mukherjee presents the Padma Shri award to former Los Alamos National Laboratory scientist Mudundi Raju. President of India Pranab Mukherjee presents the Padma Shri award to former Los Alamos National

  5. RDC receives award for Accelerate Program

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

    RDC Receives Award for Accelerate Program Community Connections: Your link to news and opportunities from Los Alamos National Laboratory Latest Issue: September 1, 2016 all issues All Issues » submit RDC receives award for Accelerate Program Accelerate is designed to help graduate more technical career students, place them in jobs, and better prepare them for career and educational advancement. November 1, 2012 dummy image Read our archives Contacts Editor Linda Anderman Email Community

  6. Shipping and Receiving Services | The Ames Laboratory

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

    Shipping and Receiving Services General Information: Shipping and Receiving services are provided for Ames Laboratory personnel. The warehouse facility on Kooser Dr. is operated by the Materials and Transportation group. Daily on-site deliveries are made of gases, inbound express mail, credit card and purchase order packages. Shipping Address for ALL packages to Ames Laboratory: Ames Lab. DOE Warehouse % (your name)/building/room ISU Campus, 2416 Pammel Dr. Ames, IA 50011-2416 Services: Shipping

  7. High-Temperature Falling-Particle Receiver

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

    conceptual drawing illustrates a high-temperature falling-particle receiver system that will achieve greater efficiencies and lower costs. Illustration from Sandia National Laboratories Project Leader: Dr. Cliff Ho ckho@sandia.gov Printed with a renewable-source ink on paper containing at least 50% wastepaper, including 10% post consumer waste. eere.energy.gov * energy.gov/sunshot DOE/GO-102012-3672 * September 2012 MOTIVATION Conventional central receiver technologies are limited to

  8. THE INFLUENCE OF NEUTRON-IRRADIATION AT LOW TEMPERATURES ON THE DIELECTRIC PARAMETERS OF 3C-SiC

    SciTech Connect (OSTI)

    J.A.A. Engelbrecht; G. Deyzel; E. Minnaar; W.E. Goosen; I. J. van Rooyen

    2014-04-01

    3C-SiC wafers were irradiated with neutrons of various fluences and at low (200 - 400 ?C) irradiation temperatures. Fourier Transform infrared (FTIR) reflectance spectra were obtained for the samples, and the spectra used to extract the dielectric parameters for each specimen, using statistical curve-fitting procedures. Analysis of all data revealed trends in reflectance peak heights as well as in the dielectric parameters. The surface roughness of the irradiated samples was measured by atomic force spectroscopy (AFM) and certain trends could be ascribed to surface roughness.

  9. Impact of Aerosols on Atmospheric Attenuation Loss in Central Receiver Systems: Preprint

    SciTech Connect (OSTI)

    Sengupta, M.; Wagner, M. J.

    2011-08-01

    Atmospheric attenuation loss between the heliostat field and receiver has been recognized as a significant source of loss in Central Receiver Systems. In clear sky situations, extinction of Direct Normal Irradiance (DNI) is primarily by aerosols in the atmosphere. When aerosol loading is high close to the surface the attenuation loss between heliostat and receivers is significantly influenced by the amount of aerosols present on a particular day. This study relates measured DNI to aerosol optical depths close to the surface of the earth. The model developed in the paper uses only measured DNI to estimate the attenuation between heliostat and receiver in a central receiver system. The requirement that only a DNI measurement is available potentially makes the model a candidate for widespread use.

  10. Optical Switch

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

    seven wonders / optical switch Optical Switch A key component in the laser chain, an optical switch called a plasma electrode Pockels cell (PEPC), was invented and developed at LLNL. A Pockels cell rotates the polarization of a laser beam when a voltage is applied across an electro-optic crystal. Depending on the voltage applied, the Pockels cell either allows light to pass through or to reflect off a polarizer, creating an optical switch. For each of NIF's 192 beamlines, a PEPC allows the laser

  11. Fiber optic hydrogen sensor

    DOE Patents [OSTI]

    Buchanan, B.R.; Prather, W.S.

    1992-10-06

    An apparatus and method are described for detecting a chemical substance by exposing an optic fiber having a core and a cladding to the chemical substance so that the chemical substance can be adsorbed onto the surface of the cladding. The optic fiber is coiled inside a container having a pair of valves for controlling the entrance and exit of the substance. Light from a light source is received by one end of the optic fiber, preferably external to the container, and carried by the core of the fiber. Adsorbed substance changes the transmissivity of the fiber as measured by a spectrophotometer at the other end, also preferably external to the container. Hydrogen is detected by the absorption of infrared light carried by an optic fiber with a silica cladding. Since the adsorption is reversible, a sensor according to the present invention can be used repeatedly. Multiple positions in a process system can be monitored using a single container that can be connected to each location to be monitored so that a sample can be obtained for measurement, or, alternatively, containers can be placed near each position and the optic fibers carrying the partially-absorbed light can be multiplexed for rapid sequential reading by a single spectrophotometer. 4 figs.

  12. Fiber optic hydrogen sensor

    DOE Patents [OSTI]

    Buchanan, B.R.; Prather, W.S.

    1991-01-01

    Apparatus and method for detecting a chemical substance by exposing an optic fiber having a core and a cladding to the chemical substance so that the chemical substance can be adsorbed onto the surface of the cladding. The optic fiber is coiled inside a container having a pair of valves for controlling the entrance and exit of the substance. Light from a light source is received by one end of the optic fiber, preferably external to the container, and carried by the core of the fiber. Adsorbed substance changes the transmissivity of the fiber as measured by a spectrophotometer at the other end, also preferably external to the container. Hydrogen is detected by the absorption of infrared light carried by an optic fiber with a silica cladding. Since the adsorption is reversible, a sensor according to the present invention can be used repeatedly. Multiple positions in a process system can be monitored using a single container that can be connected to each location to be monitored so that a sample can be obtained for measurement, or, alternatively, containers can be placed near each position and the optic fibers carrying the partially-absorbed light can be multiplexed for rapid sequential reading, by a single spectrophotometer.

  13. Optical high acidity sensor

    DOE Patents [OSTI]

    Jorgensen, B.S.; Nekimken, H.L.; Carey, W.P.; O`Rourke, P.E.

    1997-07-22

    An apparatus and method for determining acid concentrations in solutions having acid concentrations of from about 0.1 Molar to about 16 Molar is disclosed. The apparatus includes a chamber for interrogation of the sample solution, a fiber optic light source for passing light transversely through the chamber, a fiber optic collector for receiving the collimated light after transmission through the chamber, a coating of an acid resistant polymeric composition upon at least one fiber end or lens, the polymeric composition in contact with the sample solution within the chamber and having a detectable response to acid concentrations within the range of from about 0.1 Molar to about 16 Molar, a measurer for the response of the polymeric composition in contact with the sample solution, and a comparer of the measured response to predetermined standards whereby the acid molarity of the sample solution within the chamber can be determined. Preferably, a first lens is attached to the end of the fiber optic light source, the first lens adapted to collimate light from the fiber optic light source, and a second lens is attached to the end of the fiber optic collector for focusing the collimated light after transmission through the chamber. 10 figs.

  14. Optical high acidity sensor

    DOE Patents [OSTI]

    Jorgensen, Betty S.; Nekimken, Howard L.; Carey, W. Patrick; O'Rourke, Patrick E.

    1997-01-01

    An apparatus and method for determining acid concentrations in solutions having acid concentrations of from about 0.1 Molar to about 16 Molar is disclosed. The apparatus includes a chamber for interrogation of the sample solution, a fiber optic light source for passing light transversely through the chamber, a fiber optic collector for receiving the collimated light after transmission through the chamber, a coating of an acid resistant polymeric composition upon at least one fiber end or lens, the polymeric composition in contact with the sample solution within the chamber and having a detectable response to acid concentrations within the range of from about 0.1 Molar to about 16 Molar, a measurer for the response of the polymeric composition in contact with the sample solution, and, a comparer of the measured response to predetermined standards whereby the acid molarity of the sample solution within the chamber can be determined. Preferably, a first lens is attached to the end of the fiber optic light source, the first lens adapted to collimate light from the fiber optic light source, and a second lens is attached to the end of the fiber optic collector for focusing the collimated light after transmission through the chamber.

  15. Optical key system

    SciTech Connect (OSTI)

    Hagans, Karla G.; Clough, Robert E.

    2000-01-01

    An optical key system comprises a battery-operated optical key and an isolated lock that derives both its operating power and unlock signals from the correct optical key. A light emitting diode or laser diode is included within the optical key and is connected to transmit a bit-serial password. The key user physically enters either the code-to-transmit directly, or an index to a pseudorandom number code, in the key. Such person identification numbers can be retained permanently, or ephemeral. When a send button is pressed, the key transmits a beam of light modulated with the password information. The modulated beam of light is received by a corresponding optical lock with a photovoltaic cell that produces enough power from the beam of light to operate a password-screen digital logic. In one application, an acceptable password allows a two watt power laser diode to pump ignition and timing information over a fiberoptic cable into a sealed engine compartment. The receipt of a good password allows the fuel pump, spark, and starter systems to each operate. Therefore, bypassing the lock mechanism as is now routine with automobile thieves is pointless because the engine is so thoroughly disabled.

  16. Optical key system

    SciTech Connect (OSTI)

    Hagans, K.G.; Clough, R.E.

    2000-04-25

    An optical key system comprises a battery-operated optical key and an isolated lock that derives both its operating power and unlock signals from the correct optical key. A light emitting diode or laser diode is included within the optical key and is connected to transmit a bit-serial password. The key user physically enters either the code-to-transmit directly, or an index to a pseudorandom number code, in the key. Such person identification numbers can be retained permanently, or ephemeral. When a send button is pressed, the key transmits a beam of light modulated with the password information. The modulated beam of light is received by a corresponding optical lock with a photovoltaic cell that produces enough power from the beam of light to operate a password-screen digital logic. In one application, an acceptable password allows a two watt power laser diode to pump ignition and timing information over a fiberoptic cable into a sealed engine compartment. The receipt of a good password allows the fuel pump, spark, and starter systems to each operate. Therefore, bypassing the lock mechanism as is now routine with automobile thieves is pointless because the engine is so thoroughly disabled.

  17. Fiber optic hydrogen sensor

    DOE Patents [OSTI]

    Buchanan, Bruce R.; Prather, William S.

    1992-01-01

    An apparatus and method for detecting a chemical substance by exposing an optic fiber having a core and a cladding to the chemical substance so that the chemical substance can be adsorbed onto the surface of the cladding. The optic fiber is coiled inside a container having a pair of valves for controlling the entrance and exit of the substance. Light from a light source is received by one end of the optic fiber, preferably external to the container, and carried by the core of the fiber. Adsorbed substance changes the transmissivity of the fiber as measured by a spectrophotometer at the other end, also preferably external to the container. Hydrogen is detected by the absorption of infrared light carried by an optic fiber with a silica cladding. Since the adsorption is reversible, a sensor according to the present invention can be used repeatedly. Multiple positions in a process system can be monitored using a single container that can be connected to each location to be monitored so that a sample can be obtained for measurement, or, alternatively, containers can be placed near each position and the optic fibers carrying the partially-absorbed light can be multiplexed for rapid sequential reading by a single spectrophotometer.

  18. C C3 C

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

    cq4-o ta o c NC oo M0t ~- 00 C)W)0 N 0 ' O m C C -t-W0 en "C 0 - () o viw; c c; 6 C; 4 r'i6 ien61 r r ~~C ' (0 t- V) t 00W Np\ 0W )a ot)I > 000000 000 0 C0 00C>0 ct- M0 00) 0000000kr) 00 00 0q 0\0w -NW 4mk 0 0 00 -n 0000000000- IC oe000 e4 60 000000 S I 00 C)0000000D > > >00000 00 0 000 C >00 C0C)0 00 0 0 C)C >C - )C >C 0 C C) C0 ) - ->00 ,0 C C> - -> -0 0 -0C)C 0> -C> - - - - C) --- -D - C )C >C >C >C D (0 0 0 0 C)C )C >0( )C c; kei C c;

  19. Molecular dynamics modeling of atomic displacement cascades in 3C-SiC: Comparison of interatomic potentials

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

    Samolyuk, German D.; Osetskiy, Yury N.; Stoller, Roger E.

    2015-06-03

    We used molecular dynamics modeling of atomic displacement cascades to characterize the nature of primary radiation damage in 3C-SiC. We demonstrated that the most commonly used interatomic potentials are inconsistent with ab initio calculations of defect energetics. Both the Tersoff potential used in this work and a modified embedded-atom method potential reveal a barrier to recombination of the carbon interstitial and carbon vacancy which is much higher than the density functional theory (DFT) results. The barrier obtained with a newer potential by Gao and Weber is closer to the DFT result. This difference results in significant differences in the cascademore » production of point defects. We have completed both 10 keV and 50 keV cascade simulations in 3C-SiC at a range of temperatures. In contrast to the Tersoff potential, the Gao-Weber potential produces almost twice as many C vacancies and interstitials at the time of maximum disorder (~0.2 ps) but only about 25% more stable defects at the end of the simulation. Only about 20% of the carbon defects produced with the Tersoff potential recombine during the in-cascade annealing phase, while about 60% recombine with the Gao-Weber potential.« less

  20. Molecular dynamics modeling of atomic displacement cascades in 3C-SiC: Comparison of interatomic potentials

    SciTech Connect (OSTI)

    Samolyuk, German D.; Osetskiy, Yury N.; Stoller, Roger E.

    2015-06-03

    We used molecular dynamics modeling of atomic displacement cascades to characterize the nature of primary radiation damage in 3C-SiC. We demonstrated that the most commonly used interatomic potentials are inconsistent with ab initio calculations of defect energetics. Both the Tersoff potential used in this work and a modified embedded-atom method potential reveal a barrier to recombination of the carbon interstitial and carbon vacancy which is much higher than the density functional theory (DFT) results. The barrier obtained with a newer potential by Gao and Weber is closer to the DFT result. This difference results in significant differences in the cascade production of point defects. We have completed both 10 keV and 50 keV cascade simulations in 3C-SiC at a range of temperatures. In contrast to the Tersoff potential, the Gao-Weber potential produces almost twice as many C vacancies and interstitials at the time of maximum disorder (~0.2 ps) but only about 25% more stable defects at the end of the simulation. Only about 20% of the carbon defects produced with the Tersoff potential recombine during the in-cascade annealing phase, while about 60% recombine with the Gao-Weber potential.

  1. Background-free balanced optical cross correlator

    SciTech Connect (OSTI)

    Nejadmalayeri, Amir Hossein; Kaertner, Franz X

    2014-12-23

    A balanced optical cross correlator includes an optical waveguide, a first photodiode including a first n-type semiconductor and a first p-type semiconductor positioned about the optical waveguide on a first side of the optical waveguide's point of symmetry, and a second photodiode including a second n-type semiconductor and a second p-type semiconductor positioned about the optical waveguide on a second side of the optical waveguide's point of symmetry. A balanced receiver including first and second inputs is configured to produce an output current or voltage that reflects a difference in currents or voltages, originating from the first and the second photodiodes of the balanced cross correlator and fed to the first input and to the second input of the balanced receiver.

  2. DOE Projects Receive Honors for Best Geothermal Presentations...

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

    From the International Partnership for Geothermal Technology Reservoir Modeling Working Group, Podgorney, Robert & Ketilsson, Jonas & Driesner, Thomas. Integration of a 3S-3C ...

  3. Dish/stirling hybrid-receiver

    DOE Patents [OSTI]

    Mehos, Mark S.; Anselmo, Kenneth M.; Moreno, James B.; Andraka, Charles E.; Rawlinson, K. Scott; Corey, John; Bohn, Mark S.

    2002-01-01

    A hybrid high-temperature solar receiver is provided which comprises a solar heat-pipe-receiver including a front dome having a solar absorber surface for receiving concentrated solar energy, a heat pipe wick, a rear dome, a sidewall joining the front and the rear dome, and a vapor and a return liquid tube connecting to an engine, and a fossil fuel fired combustion system in radial integration with the sidewall for simultaneous operation with the solar heat pipe receiver, the combustion system comprising an air and fuel pre-mixer, an outer cooling jacket for tangentially introducing and cooling the mixture, a recuperator for preheating the mixture, a burner plenum having an inner and an outer wall, a porous cylindrical metal matrix burner firing radially inward facing a sodium vapor sink, the mixture ignited downstream of the matrix forming combustion products, an exhaust plenum, a fossil-fuel heat-input surface having an outer surface covered with a pin-fin array, the combustion products flowing through the array to give up additional heat to the receiver, and an inner surface covered with an extension of the heat-pipe wick, a pin-fin shroud sealed to the burner and exhaust plenums, an end seal, a flue-gas diversion tube and a flue-gas valve for use at off-design conditions to limit the temperature of the pre-heated air and fuel mixture, preventing pre-ignition.

  4. Solar Heat-Pipe Receiver Wick Modeling

    SciTech Connect (OSTI)

    Andraka, C.E.

    1998-12-21

    Stirling-cycle engines have been identified as a promising technology for the conversion of concentrated solar energy into usable electrical power. In previous experimented work, we have demonstrated that a heat pipe receiver can significantly improve system performance-over a directly-illuminated heater head. The design and operating conditions of a heat pipe receiver differ significantly from typical laboratory heat pipes. New wick structures have been developed to exploit the characteristics of the solar generation system. Typically, these wick structures allow vapor generation within the wick. Conventional heat pipe models do not handle this enhancement yet it can more than double the performance of the wick. In this study, I develop a steady-state model of a boiling-enhanced wick for a solar heat pipe receiver. The model is used for design-point calculations and is written in FORTRAN90. Some limited comparisons have been made with actual test data.

  5. Optical distance measurement device and method thereof

    DOE Patents [OSTI]

    Bowers, Mark W.

    2003-05-27

    A system and method of efficiently obtaining distance measurements of a target. A modulated optical beam may be used to determine the distance to the target. A first beam splitter may be used to split the optical beam and a second beam splitter may be used to recombine a reference beam with a return ranging beam. An optical mixing detector may be used in a receiver to efficiently detect distance measurement information.

  6. Particle Receiver Integrated with Fludized Bed

    Broader source: Energy.gov [DOE]

    This fact sheet describes a project awarded under the DOE's 2012 SunShot Concentrating Solar Power R&D award program to NREL which features a particle receiver with a fluidized bed. The research team is working to develop a technology that uses gas/solid, two-phase flow as a heat-transfer fluid and separated, stable, solid particles as a thermal energy storage medium. This project provides a pathway for CSP plants to increase their solar-to-electric conversion efficiency and reduce costs in the areas of solar collection from the solar field to the receiver, energy conversion systems, and thermal energy storage.

  7. WIPP receives 9,000th shipment

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

    WIPP receives 9,000th shipment CARLSBAD, N.M., October 7, 2010 � The U.S. Department of Energy's Waste Isolation Pilot Plant (WIPP) received its 9,000th shipment of transuranic (TRU) waste on Tuesday evening, marking an important milestone in the Department�s mission to clean up the legacy of the cold war. �This significant milestone represents our commitment to the nation to clean up the defense legacy TRU waste footprint,� said Interim Acting CBFO Manager Ed Ziemianski. �The WIPP

  8. Microsoft Word - Hejazi Receives Award 030910

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

    1, 2010 Follow us on Facebook at www.facebook.com/NNSANevadaSiteOffice NNSA/NSO Office of Public Affairs http://www.nv.doe.gov P.O. Box 98518 Las Vegas, NV 89193-8518 Nevada Site Office News Nevada Site Office General Counsel Receives First Annual Legal Excellence Award Sharon A. Hejazi has received the First Annual National Nuclear Security Administration (NNSA) Legal Excellence Award for 2009. As the Site Counsel for the Nevada Site Office (NSO), Ms. Hejazi demonstrates the highest standards

  9. Fiber optic spectroscopic digital imaging sensor and method for flame properties monitoring

    DOE Patents [OSTI]

    Zelepouga, Serguei A.; Rue, David M.; Saveliev, Alexei V.

    2011-03-15

    A system for real-time monitoring of flame properties in combustors and gasifiers which includes an imaging fiber optic bundle having a light receiving end and a light output end and a spectroscopic imaging system operably connected with the light output end of the imaging fiber optic bundle. Focusing of the light received by the light receiving end of the imaging fiber optic bundle by a wall disposed between the light receiving end of the fiber optic bundle and a light source, which wall forms a pinhole opening aligned with the light receiving end.

  10. High temperature, minimally invasive optical sensing modules

    DOE Patents [OSTI]

    Riza, Nabeel Agha; Perez, Frank

    2008-02-05

    A remote temperature sensing system includes a light source selectively producing light at two different wavelengths and a sensor device having an optical path length that varies as a function of temperature. The sensor receives light emitted by the light source and redirects the light along the optical path length. The system also includes a detector receiving redirected light from the sensor device and generating respective signals indicative of respective intensities of received redirected light corresponding to respective wavelengths of light emitted by the light source. The system also includes a processor processing the signals generated by the detector to calculate a temperature of the device.

  11. Is the quasar 3C 232 embedded in the neutral hydrogen tail of the galaxy NGC 3067

    SciTech Connect (OSTI)

    Pesch, P.; Westpfahl, D.J. Jr.; Simkin, S.M. New Mexico Institute of Mining and Technology, Socorro Michigan State Univ., East Lansing )

    1990-04-01

    Radio observations (Carilli et al. 1989) have detected a tail of neutral hydrogen at the low redshift of the galaxy NGC 3067 and pointing toward the higher redshift quasar 3C 232, which is 2-arcmin distant from NGC 3067. If the quasar and NGC 3067 are physically associated, in spite of their different redshifts, then the quasar would produce a large region of ionized hydrogen in the cloud of neutral hydrogen. Observations aimed at detecting the H-alpha emission expected from such a region of ionized hydrogen were obtained with a CCD; no emission in H-alpha was detected, and upper limits are established. These upper limits rule out a distance closer than several kiloparsecs between the quasar and the neutral hydrogen. Thus the quasar is not embedded in the neutral hydrogen of the galaxy, but a physical association between the quasar and the galaxy is not disproved. 14 refs.

  12. EVIDENCE FOR HIGHLY RELATIVISTIC VELOCITIES IN THE KILOPARSEC-SCALE JET OF THE QUASAR 3C 345

    SciTech Connect (OSTI)

    Roberts, David H.; Wardle, John F. C.

    2012-11-10

    In this paper we use radio polarimetric observations of the jet of the nearby bright quasar 3C 345 to estimate the fluid velocity on kiloparsec scales. The jet is highly polarized, and surprisingly, the electric vector position angles in the jet are 'twisted' with respect to the jet axis. Simple models of magnetized jets are investigated in order to study various possible origins of the electric vector distribution. In a cylindrically symmetric transparent jet a helical magnetic field will appear either transverse or longitudinal due to partial cancellations of Stokes parameters between the front and back of the jet. Synchrotron opacity can break the symmetry, but it leads to fractional polarization less than that observed and to strong frequency dependence that is not seen. Modeling shows that differential Doppler boosting in a diverging jet can break the symmetry, allowing a helical magnetic field to produce a twisted electric vector pattern. Constraints on the jet inclination, magnetic field properties, intrinsic opening angle, and fluid velocities are obtained and show that highly relativistic speeds ({beta} {approx}> 0.95) are required. This is consistent with the observed jet opening angle, with the absence of a counter-jet, with the polarization of the knots at the end of the jet, and with some inverse-Compton models for the X-ray emission from the 3C 345 jet. This model can also apply on parsec scales and may help explain those sources where the electric vector position angles in the jet are neither parallel nor transverse to the jet axis.

  13. Optical humidity sensor

    DOE Patents [OSTI]

    Tarvin, Jeffrey A.

    1987-01-01

    An optical dielectric humidity sensor which includes a dielectric mirror having multiple alternating layers of two porous water-adsorbent dielectric materials with differing indices of refraction carried by a translucent substrate. A narrow-band polarized light source is positioned to direct light energy onto the mirror, and detectors are positioned to receive light energy transmitted through and reflected by the mirror. A ratiometer indicates humidity in the atmosphere which surrounds the dielectric mirror as a function of a ratio of light energies incident on the detectors.

  14. Optical humidity sensor

    DOE Patents [OSTI]

    Tarvin, J.A.

    1987-02-10

    An optical dielectric humidity sensor is disclosed which includes a dielectric mirror having multiple alternating layers of two porous water-adsorbent dielectric materials with differing indices of refraction carried by a translucent substrate. A narrow-band polarized light source is positioned to direct light energy onto the mirror, and detectors are positioned to receive light energy transmitted through and reflected by the mirror. A ratiometer indicates humidity in the atmosphere which surrounds the dielectric mirror as a function of a ratio of light energies incident on the detectors. 2 figs.

  15. Analysis and design methodology for the development of optimized, direct-detection CO{sub 2} DIAL receivers

    SciTech Connect (OSTI)

    Cooke, B.J.; Laubscher, B.E.; Cafferty, M.

    1996-12-31

    The analysis methodology and corresponding analytical tools for the design of optimized, low-noise, hard target return CO{sub 2} Differential Absorption Lidar (DIAL) receiver systems implementing both single element detectors and multi-pixel imaging arrays for passive/active, remote-sensing applications are presented. System parameters and components composing the receiver include: aperture, focal length, field of view, cold shield requirements, image plane dimensions, pixel dimensions, pixel pitch and fill factor, detection quantum efficiency, optical filter requirements, amplifier and temporal sampling parameters. The performance analysis is accomplished by calculating the system`s CO{sub 2} laser range response, total noise, optical geometric form factor and optical resolution. The noise components include speckle, photon noise due to signal, scene and atmospheric background, cold shield, and electronic noise. System resolution is simulated through cascaded optical transfer functions and includes effects due to atmosphere, optics, image sampling, and system motion. Experimental results of a developmental single-element detector receiver designed to detect 100 ns wide laser pulses (10 - 100 kHz pulse repetition rates) backscattered from hard-targets at nominal ranges of 10 km are presented. The receiver sensitivity is near-background noise limited, given an 8.5-11.5 {mu}m radiant optical bandwidth, with the total noise floor spectrally white for maximum pulse averaging efficiency.

  16. Signal processor for processing ultrasonic receiver signals

    DOE Patents [OSTI]

    Fasching, George E.

    1980-01-01

    A signal processor is provided which uses an analog integrating circuit in conjunction with a set of digital counters controlled by a precision clock for sampling timing to provide an improved presentation of an ultrasonic transmitter/receiver signal. The signal is sampled relative to the transmitter trigger signal timing at precise times, the selected number of samples are integrated and the integrated samples are transferred and held for recording on a strip chart recorder or converted to digital form for storage. By integrating multiple samples taken at precisely the same time with respect to the trigger for the ultrasonic transmitter, random noise, which is contained in the ultrasonic receiver signal, is reduced relative to the desired useful signal.

  17. WIPP Receives Waste Characterized With Mobile System

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

    For Immediate Release WIPP Receives Waste Characterized With Mobile System CARLSBAD, N.M., April 12, 2002 - The first shipment of transuranic waste characterized by the Central Characterization Project arrived Saturday (April 6) at the U.S. Department of Energy's (DOE) Waste Isolation Pilot Plant (WIPP). The shipment came to WIPP from DOE's Savannah River Site in South Carolina. The shipment was the eighth to WIPP from the Savannah River Site, but the first under the newly approved Central

  18. CFD analysis of coverplate receiver flow

    SciTech Connect (OSTI)

    Popp, O.; Zimmermann, H.; Kutz, J.

    1998-01-01

    The flow field in a preswirled cooling air supply to a turbine rotor has been investigated by means of CFD simulations. Coefficients for system efficiency are derived. The influences of various geometric parameters for different configurations have been correlated with the help of appropriate coefficients. For some of the most important geometric parameters of the coverplate receiver, design recommendations have been made. For the preswirl nozzles, the potential of efficiency improvement by contour design is highlighted.

  19. Gated frequency-resolved optical imaging with an optical parametric amplifier

    DOE Patents [OSTI]

    Cameron, S.M.; Bliss, D.E.; Kimmel, M.W.; Neal, D.R.

    1999-08-10

    A system for detecting objects in a turbid media utilizes an optical parametric amplifier as an amplifying gate for received light from the media. An optical gating pulse from a second parametric amplifier permits the system to respond to and amplify only ballistic photons from the object in the media. 13 figs.

  20. Gated frequency-resolved optical imaging with an optical parametric amplifier

    DOE Patents [OSTI]

    Cameron, Stewart M.; Bliss, David E.; Kimmel, Mark W.; Neal, Daniel R.

    1999-01-01

    A system for detecting objects in a turbid media utilizes an optical parametric amplifier as an amplifying gate for received light from the media. An optical gating pulse from a second parametric amplifier permits the system to respond to and amplify only ballistic photons from the object in the media.

  1. Quantum wells on 3C-SiC/NH-SiC heterojunctions. Calculation of spontaneous polarization and electric field strength in experiments

    SciTech Connect (OSTI)

    Sbruev, I. S.; Sbruev, S. B.

    2010-10-15

    The results of experiments with quantum wells on 3C-SiC/4H-SiC and 3C-SiC/6H-SiC heterojunctions obtained by various methods are reconsidered. Spontaneous polarizations, field strengths, and energies of local levels in quantum wells on 3C-SiC/NH-SiC heterojunctions were calculated within a unified model. The values obtained are in agreement with the results of all considered experiments. Heterojunction types are determined. Approximations for valence band offsets on heterojunctions between silicon carbide polytypes and the expression for calculating local levels in quantum wells on the 3C-SiC/NH-SiC heterojunction are presented. The spontaneous polarizations and field strengths induced by spontaneous polarization on 3C-SiC/4H-SiC and 3C-SiC/6H-SiC heterojunctions were calculated as 0.71 and 0.47 C/m{sup 2} and 0.825 and 0.55 MV/cm, respectively.

  2. New Optical Evaluation Approach for Parabolic Trough Collectors: First-Principle OPTical Intercept Calculation

    SciTech Connect (OSTI)

    Zhu, G.; Lewandowski, A.

    2012-11-01

    A new analytical method -- First-principle OPTical Intercept Calculation (FirstOPTIC) -- is presented here for optical evaluation of trough collectors. It employs first-principle optical treatment of collector optical error sources and derives analytical mathematical formulae to calculate the intercept factor of a trough collector. A suite of MATLAB code is developed for FirstOPTIC and validated against theoretical/numerical solutions and ray-tracing results. It is shown that FirstOPTIC can provide fast and accurate calculation of intercept factors of trough collectors. The method makes it possible to carry out fast evaluation of trough collectors for design purposes. The FirstOPTIC techniques and analysis may be naturally extended to other types of CSP technologies such as linear-Fresnel collectors and central-receiver towers.

  3. Optical Distance Measurement Device And Method Thereof

    DOE Patents [OSTI]

    Bowers, Mark W.

    2004-06-15

    A system and method of efficiently obtaining distance measurements of a target by scanning the target. An optical beam is provided by a light source and modulated by a frequency source. The modulated optical beam is transmitted to an acousto-optical deflector capable of changing the angle of the optical beam in a predetermined manner to produce an output for scanning the target. In operation, reflected or diffused light from the target may be received by a detector and transmitted to a controller configured to calculate the distance to the target as well as the measurement uncertainty in calculating the distance to the target.

  4. Laser Safety Method For Duplex Open Loop Parallel Optical Link

    DOE Patents [OSTI]

    Baumgartner, Steven John; Hedin, Daniel Scott; Paschal, Matthew James

    2003-12-02

    A method and apparatus are provided to ensure that laser optical power does not exceed a "safe" level in an open loop parallel optical link in the event that a fiber optic ribbon cable is broken or otherwise severed. A duplex parallel optical link includes a transmitter and receiver pair and a fiber optic ribbon that includes a designated number of channels that cannot be split. The duplex transceiver includes a corresponding transmitter and receiver that are physically attached to each other and cannot be detached therefrom, so as to ensure safe, laser optical power in the event that the fiber optic ribbon cable is broken or severed. Safe optical power is ensured by redundant current and voltage safety checks.

  5. X-ray structure and inhibition of 3C-like protease from porcine epidemic diarrhea virus

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

    St. John, Sarah E.; Anson, Brandon J.; Mesecar, Andrew D.

    2016-05-13

    Porcine epidemic diarrhea virus (PEDV) is a coronavirus that infects pigs and can have mortality rates approaching 100% in piglets, causing serious economic impact. The 3C-like protease (3CLpro) is essential for the coronaviral life cycle and is an appealing target for the development of therapeutics. We report the expression, purification, crystallization and 2.10 angstrom X-ray structure of 3CLpro from PEDV. Analysis of the PEDV 3CLpro structure and comparison to other coronaviral 3CLpro's from the same alpha-coronavirus phylogeny shows that the overall structures and active site architectures across 3CLpro's are conserved, with the exception of a loop that comprises the proteasemore » S-2 pocket. We found a known inhibitor of severe acute respiratory syndrome coronavirus (SARS-CoV) 3CLpro, (R)-16, to have inhibitor activity against PEDV 3CLpro, despite that SARS-3CLpro and PEDV 3CLpro share only 45.4% sequence identity. Structural comparison reveals that the majority of residues involved in (R)-16 binding to SARS-3CLpro are conserved in PEDV-3CLpro; however, the sequence variation and positional difference in the loop forming the S-2 pocket may account for large observed difference in IC50 values. In conclusion, this work advances our understanding of the subtle, but important, differences in coronaviral 3CLpro architecture and contributes to the broader structural knowledge of coronaviral 3CLpro's.« less

  6. Limb-brightened jet of 3C 84 revealed by the 43 GHz very-long-baseline-array observation

    SciTech Connect (OSTI)

    Nagai, H.; Hada, K.; Haga, T.; Giovannini, G.; Orienti, M.; D'Ammando, F.; Giroletti, M.; Doi, A.; Kino, M.; Nakamura, M.; Asada, K.

    2014-04-10

    We present a study of the sub-parsec scale radio structure of the radio galaxy 3C 84/NGC 1275 based on the Very Long Baseline Array data at 43 GHz. We discover a limb brightening in the 'restarted' jet that is associated with the 2005 radio outburst. In the 1990s, the jet structure was ridge brightening rather than limb brightening, despite the observations being done with similar angular resolutions. This indicates that the transverse jet structure has recently changed. This change in the morphology reveals an interesting agreement with the ?-ray flux increase, i.e., the ?-ray flux in the 1990s was at least seven times lower than the current one. One plausible explanation for the limb brightening is that the velocity structure of the jet is in the context of the stratified jet, which is a successful scenario that explains the ?-ray emission in some active galactic nuclei. If this is the case, then the change in apparent transverse structure might be caused by the change in the transverse velocity structure. We argue that the transition from ridge brightening to limb brightening is related to the ?-ray time variability on the timescale of decades. We also discuss the collimation profile of the jet.

  7. Fiber optics spectrochemical emission sensors

    DOE Patents [OSTI]

    Griffin, J.W.; Olsen, K.B.

    1992-02-04

    A method is described of in situ monitoring of a body of a fluid stored in a tank or groundwater or vadose zone gases in a well for the presence of selected chemical species. The method uses a probe insertable into the well or tank via a cable and having an electrical apparatus for exciting selected chemical species in the body of fluid. The probe can have a pair of electrodes for initiating a spark or a plasma cell for maintaining a plasma to excite the selected chemical species. The probe also has an optical apparatus for receiving optical emissions emitted by the excited species and optically transmitting the emissions via the cable to an analysis location outside the well. The analysis includes detecting a selected wavelength in the emissions indicative of the presence of the selected chemical species. A plurality of probes can be suspended at an end of a respective cable, with the transmitting and analyzing steps for each probe being synchronized sequentially for one set of support equipment and instrumentation to monitor at multiple test points. The optical apparatus is arranged about the light guide axis so that the selected chemical species are excited in the fluid in alignment with the light guide axis. Optical emissions are received from the excited chemical species along such axis. 18 figs.

  8. Fiber optics spectrochemical emission sensors

    DOE Patents [OSTI]

    Griffin, Jeffrey W.; Olsen, Khris B.

    1992-01-01

    A method of in situ monitoring of a body of a fluid stored in a tank or groundwater or vadose zone gases in a well for the presence of selected chemical species uses a probe insertable into the well or tank via a cable and having electrical apparatus for exciting selected chemical species in the body of fluid. The probe can have a pair of electrodes for initiating a spark or a plasma cell for maintaining a plasma to excite the selected chemical species. The probe also has optical apparatus for receiving optical emissions emitted by the excited species and optically transmitting the emissions via the cable to an analysis location outside the well. The analysis includes detecting a selected wavelength in the emissions indicative of the presence of the selected chemical species. A plurality of probes can be suspended at an end of a respective cable, with the transmitting and analyzing steps for each probe being synchronized sequentially for one set of support equipment and instrumentation to monitor at multiple test points. The optical apparatus is arranged about the light guide axis so that the selected chemical species are excited the fluid in alignment with the light guide axis and optical emissions are received from the excited chemical species along such axis.

  9. Full-wave receiver architecture for the homodyne motion sensor

    DOE Patents [OSTI]

    Haugen, Peter C; Dallum, Gregory E; Welsh, Patrick A; Romero, Carlos E

    2013-11-19

    A homodyne motion sensor or detector based on ultra-wideband radar utilizes the entire received waveform through implementation of a voltage boosting receiver. The receiver includes a receiver input and a receiver output. A first diode is connected to the receiver output. A first charge storage capacitor is connected from between the first diode and the receiver output to ground. A second charge storage capacitor is connected between the receiver input and the first diode. A second diode is connected from between the second charge storage capacitor and the first diode to ground. The dual diode receiver performs voltage boosting of a RF signal received at the receiver input, thereby enhancing receiver sensitivity.

  10. Full-wave receiver architecture for the homodyne motion sensor

    DOE Patents [OSTI]

    Haugen, Peter C.; Dallum, Gregory E.; Welsh, Patrick A.; Romero, Carlos E.

    2015-09-29

    A homodyne motion sensor or detector based on ultra-wideband radar utilizes the entire received waveform through implementation of a voltage boosting receiver. The receiver includes a receiver input and a receiver output. A first diode is connected to the receiver output. A first charge storage capacitor is connected from between the first diode and the receiver output to ground. A second charge storage capacitor is connected between the receiver input and the first diode. A second diode is connected from between the second charge storage capacitor and the first diode to ground. The dual diode receiver performs voltage boosting of a RF signal received at the receiver input, thereby enhancing receiver sensitivity.

  11. Mudundi R. Raju receives Padma Shri

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

    Mudundi R. Raju receives Padma Shri award July 18, 2013 Los Alamos retiree brings medical advances to poor of India LOS ALAMOS, N.M., July 18, 2013-The government of India honored former Los Alamos scientist and Laboratory Fellow Mudundi Raju with a Padma Shri award this year for his distinguished service in science and engineering, providing cancer radiation treatment to the poor of rural India. "The aim of science is to improve the human condition," said Nobel Laureate Ilya

  12. Advanced motor driven clamped borehole seismic receiver

    DOE Patents [OSTI]

    Engler, B.P.; Sleefe, G.E.; Striker, R.P.

    1993-02-23

    A borehole seismic tool is described including a borehole clamp which only moves perpendicular to the borehole. The clamp is driven by an electric motor, via a right angle drive. When used as a seismic receiver, the tool has a three part housing, two of which are hermetically sealed. Accelerometers or geophones are mounted in one hermetically sealed part, the electric motor in the other hermetically sealed part, and the clamp and right angle drive in the third part. Preferably the tool includes cable connectors at both ends. Optionally a shear plate can be added to the clamp to extend the range of the tool.

  13. Advanced motor driven clamped borehole seismic receiver

    DOE Patents [OSTI]

    Engler, Bruce P.; Sleefe, Gerard E.; Striker, Richard P.

    1993-01-01

    A borehole seismic tool including a borehole clamp which only moves perpendicular to the borehole. The clamp is driven by an electric motor, via a right angle drive. When used as a seismic receiver, the tool has a three part housing, two of which are hermetically sealed. Accelerometers or geophones are mounted in one hermetically sealed part, the electric meter in the other hermetically sealed part, and the clamp and right angle drive in the third part. Preferably the tool includes cable connectors at both ends. Optionally a shear plate can be added to the clamp to extend the range of the tool.

  14. Line Focus Receiver Infrared Temperature Survey System

    Energy Science and Technology Software Center (OSTI)

    2010-06-01

    For ongoing maintenance and performance purposes, solar parabolic trough field operators desire to know that the Heat Collection Elements (HCEs) are performing properly. Measuring their temperature is one way of doing this One 30MW field can contain approximately 10,000 HCE's. This software interfaces with a GPS receiver and an infrared camera. It takes global positioning data from the GPS and uses this information to automate the infrared image capture and temperature analysis of individual solarmore » parabolic HCEs in a solar parabolic trough field With this software system an entire 30MW field can be surveyed in 2-3 days.« less

  15. THE STRUCTURE AND EMISSION MODEL OF THE RELATIVISTIC JET IN THE QUASAR 3C 279 INFERRED FROM RADIO TO HIGH-ENERGY {gamma}-RAY OBSERVATIONS IN 2008-2010

    SciTech Connect (OSTI)

    Hayashida, M.; Madejski, G. M.; Chiang, J.; Blandford, R. D.; Buehler, R.; Sikora, M.; Wehrle, A. E.; Ogle, P.; Collmar, W.; Larsson, S.; Fukazawa, Y.; Itoh, R.; Stawarz, L.; Richards, J. L.; Max-Moerbeck, W.; Readhead, A.; Cavazzuti, E.; Ciprini, S.; Gehrels, N. E-mail: madejski@slac.stanford.edu E-mail: sikora@camk.edu.pl; and others

    2012-08-01

    We present time-resolved broadband observations of the quasar 3C 279 obtained from multi-wavelength campaigns conducted during the first two years of the Fermi Gamma-ray Space Telescope mission. While investigating the previously reported {gamma}-ray/optical flare accompanied by a change in optical polarization, we found that the optical emission appears to be delayed with respect to the {gamma}-ray emission by about 10 days. X-ray observations reveal a pair of 'isolated' flares separated by {approx}90 days, with only weak {gamma}-ray/optical counterparts. The spectral structure measured by Spitzer reveals a synchrotron component peaking in the mid-infrared band with a sharp break at the far-infrared band during the {gamma}-ray flare, while the peak appears in the millimeter (mm)/submillimeter (sub-mm) band in the low state. Selected spectral energy distributions are fitted with leptonic models including Comptonization of external radiation produced in a dusty torus or the broad-line region. Adopting the interpretation of the polarization swing involving propagation of the emitting region along a curved trajectory, we can explain the evolution of the broadband spectra during the {gamma}-ray flaring event by a shift of its location from {approx}1 pc to {approx}4 pc from the central black hole. On the other hand, if the {gamma}-ray flare is generated instead at sub-pc distance from the central black hole, the far-infrared break can be explained by synchrotron self-absorption. We also model the low spectral state, dominated by the mm/sub-mm peaking synchrotron component, and suggest that the corresponding inverse-Compton component explains the steady X-ray emission.

  16. Y-12 employees receive awards recognizing excellence in nuclear...

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

    receive ... Y-12 employees receive awards recognizing excellence in nuclear weapons program Posted: October 6, 2014 - 9:09am Defense Programs 2013 Award of Excellence recipient ...

  17. LANL spinoff receives NIH grant for respiratory disease diagnostic...

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

    LANL spinoff receives NIH grant LANL spinoff receives NIH grant for respiratory disease diagnostic device Mesa Tech has been awarded a grant to develop an inexpensive, ...

  18. Zelenay receives professorship in chemistry from president of...

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

    Zelenay receives professorship in chemistry from president of Poland Zelenay receives professorship in chemistry from president of Poland Piotr Zelenay of Materials Synthesis and ...

  19. DOE's Jefferson Lab Receives Approval To Start Construction of...

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

    DOE's Jefferson Lab Receives Approval To Start Construction of 310 Million Upgrade DOE's Jefferson Lab Receives Approval To Start Construction of 310 Million Upgrade NEWPORT ...

  20. SFCC receives $1 million grant for Youth Construction Program

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

    SFCC Receives Grant for Youth Construction Program Community Connections: Your link to ... SFCC receives 1 million grant for Youth Construction Program Los Alamos National ...

  1. EERE Success Story-Utilities in California and Washington Receive...

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

    Utilities in California and Washington Receive Honors for Innovative Wind Deployment EERE Success Story-Utilities in California and Washington Receive Honors for Innovative Wind ...

  2. Abrikosov receives Ukrainian Gold Medal | Argonne National Laboratory

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

    Abrikosov receives Ukrainian Gold Medal By Lynn Tefft Hoff * July 28, 2015 Tweet ... Abrikosov has received the Gold Medal of Vernadsky of the National Academy of Sciences of ...

  3. Newest Los Alamos facility receives LEED® Gold certification

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

    Newest facility receives LEED Gold certification Newest Los Alamos facility receives LEED Gold certification The Radiological Laboratory Utility Office Building is first to ...

  4. EM Receives Several Honors in 2011 DOE Sustainability Awards...

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

    Receives Several Honors in 2011 DOE Sustainability Awards EM Receives Several Honors in 2011 DOE Sustainability Awards November 4, 2011 - 12:00pm Addthis Several EM employees, ...

  5. DOE Announces First Companies to Receive Industrial Energy Efficiency...

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

    DOE Announces First Companies to Receive Industrial Energy Efficiency Certification DOE Announces First Companies to Receive Industrial Energy Efficiency Certification December 9,...

  6. Chemical Scientist Hendrik Bluhm Receives Bessel Research Award

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

    Chemical Scientist Hendrik Bluhm Receives Bessel Research Award Chemical Scientist Hendrik Bluhm Receives Bessel Research Award Print Friday, 24 May 2013 00:00 Hendrik Bluhm of the ...

  7. Seventy-three New Mexico students receive Los Alamos Employees...

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

    Seventy-three students receive LAESF scholarships Seventy-three New Mexico students receive Los Alamos Employees' Scholarship Fund scholarships Raymond Fasano of Bernalillo High...

  8. Y-12 Steam Plant Project Received National Recognition for Project...

    National Nuclear Security Administration (NNSA)

    Steam Plant Project Received National Recognition for Project Management Excellence March 23, 2011 Y-12 steam plant project receives national recognition for project management ...

  9. Laboratory researcher Joel Rowland to receive DOE Early Career...

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

    Rowland to receive DOE Early Career Award Laboratory researcher Joel Rowland to receive DOE Early Career Award Rowland's research was recognized by DOE for incorporating...

  10. Receiver Operating Characteristic (ROC) Curves: An Analysis Tool...

    Office of Scientific and Technical Information (OSTI)

    Technical Report: Receiver Operating Characteristic (ROC) Curves: An Analysis Tool for Detection Performance Citation Details In-Document Search Title: Receiver Operating ...

  11. AN X-RAY VIEW OF THE JET CYCLE IN THE RADIO-LOUD AGN 3C120

    SciTech Connect (OSTI)

    Lohfink, Anne M.; Reynolds, Christopher S.; Mushotzky, Richard F.; Tombesi, Francesco; Jorstad, Svetlana G.; Marscher, Alan P.; Miller, Eric D.; Nowak, Michael A.; Aller, Hugh; Aller, Margo F.; Miller, Jon M.; Brenneman, Laura W.; Fabian, Andrew C.

    2013-08-01

    We present a study of the central engine in the broad-line radio galaxy 3C120 using a multi-epoch analysis of a deep XMM-Newton observation and two deep Suzaku pointings (in 2012). In order to place our spectral data into the context of the disk-disruption/jet-ejection cycles displayed by this object, we monitor the source in the UV/X-ray bands, and in the radio band. We find three statistically acceptable spectral models: a disk-reflection model, a jet model, and a jet+disk model. Despite being good descriptions of the data, the disk-reflection model violates the radio constraints on the inclination, and the jet model has a fine-tuning problem, requiring a jet contribution exceeding that expected. Thus, we argue for a composite jet+disk model. Within the context of this model, we verify the basic predictions of the jet-cycle paradigm, finding a truncated/refilling disk during the Suzaku observations and a complete disk extending down to the innermost stable circular orbit during the XMM-Newton observation. The idea of a refilling disk is further supported by the detection of the ejection of a new jet knot approximately one month after the Suzaku pointings. We also discover a step-like event in one of the Suzaku pointings in which the soft band lags the hard band. We suggest that we are witnessing the propagation of a disturbance from the disk into the jet on a timescale set by the magnetic field.

  12. Integrated optical interrogation of micro-structures

    DOE Patents [OSTI]

    Evans, III, Boyd M. (Oak Ridge, TN); Datskos, Panagiotis G. (Knoxville, TN); Rajic, Slobodan (Knoxville, TN)

    2003-01-01

    The invention is an integrated optical sensing element for detecting and measuring changes in position or deflection. A deflectable member, such as a microcantilever, is configured to receive a light beam. A waveguide, such as an optical waveguide or an optical fiber, is positioned to redirect light towards the deflectable member. The waveguide can be incorporated into the deflectable member or disposed adjacent to the deflectable member. Means for measuring the extent of position change or deflection of the deflectable member by receiving the light beam from the deflectable member, such as a photodetector or interferometer, receives the reflected light beam from the deflectable member. Changes in the light beam are correlated to the changes in position or deflection of the deflectable member. A plurality of deflectable members can be arranged in a matrix or an array to provide one or two-dimensional imaging or sensing capabilities.

  13. Optical coupler

    DOE Patents [OSTI]

    Majewski, Stanislaw; Weisenberger, Andrew G.

    2004-06-15

    In a camera or similar radiation sensitive device comprising a pixilated scintillation layer, a light guide and an array of position sensitive photomultiplier tubes, wherein there exists so-called dead space between adjacent photomultiplier tubes the improvement comprising a two part light guide comprising a first planar light spreading layer or portion having a first surface that addresses the scintillation layer and optically coupled thereto at a second surface that addresses the photomultiplier tubes, a second layer or portion comprising an array of trapezoidal light collectors defining gaps that span said dead space and are individually optically coupled to individual position sensitive photomultiplier tubes. According to a preferred embodiment, coupling of the trapezoidal light collectors to the position sensitive photomultiplier tubes is accomplished using an optical grease having about the same refractive index as the material of construction of the two part light guide.

  14. Optical analyzer

    DOE Patents [OSTI]

    Hansen, A.D.

    1987-09-28

    An optical analyzer wherein a sample of particulate matter, and particularly of organic matter, which has been collected on a quartz fiber filter is placed in a combustion tube, and light from a light source is passed through the sample. The temperature of the sample is raised at a controlled rate and in a controlled atmosphere. The magnitude of the transmission of light through the sample is detected as the temperature is raised. A data processor, differentiator and a two pen recorder provide a chart of the optical transmission versus temperature and the rate of change of optical transmission versus temperature signatures (T and D) of the sample. These signatures provide information as to physical and chemical processes and a variety of quantitative and qualitative information about the sample. Additional information is obtained by repeating the run in different atmospheres and/or different rates or heating with other samples of the same particulate material collected on other filters. 7 figs.

  15. Optical memory

    DOE Patents [OSTI]

    Mao, Samuel S; Zhang, Yanfeng

    2013-07-02

    Optical memory comprising: a semiconductor wire, a first electrode, a second electrode, a light source, a means for producing a first voltage at the first electrode, a means for producing a second voltage at the second electrode, and a means for determining the presence of an electrical voltage across the first electrode and the second electrode exceeding a predefined voltage. The first voltage, preferably less than 0 volts, different from said second voltage. The semiconductor wire is optically transparent and has a bandgap less than the energy produced by the light source. The light source is optically connected to the semiconductor wire. The first electrode and the second electrode are electrically insulated from each other and said semiconductor wire.

  16. Optical switch

    DOE Patents [OSTI]

    Reedy, Robert P.

    1987-01-01

    An optical switching device (10) is provided whereby light from a first glass fiber (16) or a second glass fiber (14) may be selectively transmitted into a third glass fiber (18). Each glass fiber is provided with a focusing and collimating lens system (26, 28, 30). In one mode of operation, light from the first glass fiber (16) is reflected by a planar mirror (36) into the third glass fiber (18). In another mode of operation, light from the second glass fiber (14) passes directly into the third glass fiber (18). The planar mirror (36) is attached to a rotatable table (32) which is rotated to provide the optical switching.

  17. Optical switch

    DOE Patents [OSTI]

    Reedy, R.P.

    1987-11-10

    An optical switching device is provided whereby light from a first glass fiber or a second glass fiber may be selectively transmitted into a third glass fiber. Each glass fiber is provided with a focusing and collimating lens system. In one mode of operation, light from the first glass fiber is reflected by a planar mirror into the third glass fiber. In another mode of operation, light from the second glass fiber passes directly into the third glass fiber. The planar mirror is attached to a rotatable table which is rotated to provide the optical switching. 3 figs.

  18. THE STRUCTURE AND LINEAR POLARIZATION OF THE KILOPARSEC-SCALE JET OF THE QUASAR 3C 345

    SciTech Connect (OSTI)

    Roberts, David H.; Wardle, John F. C.; Marchenko, Valerie V.

    2013-02-01

    Deep Very Large Array imaging of the quasar 3C 345 at 4.86 and 8.44 GHz has been used to study the structure and linear polarization of its radio jet on scales ranging from 2 to 30 kpc. There is a 7-8 Jy unresolved core with spectral index {alpha} {approx_equal} -0.24 (I{sub {nu}}{proportional_to}{nu}{sup {alpha}}). The jet (typical intensity 15 mJy beam{sup -1}) consists of a 2.''5 straight section containing two knots, and two additional non-co-linear knots at the end. The jet's total projected length is about 27 kpc. The spectral index of the jet varies over -1.1 {approx}< {alpha} {approx}< -0.5. The jet diverges with a semi-opening angle of about 9 Degree-Sign , and is nearly constant in integrated brightness over its length. A faint feature northeast of the core does not appear to be a true counter-jet, but rather an extended lobe of this FR-II radio source seen in projection. The absence of a counter-jet is sufficient to place modest constraints on the speed of the jet on these scales, requiring {beta} {approx}> 0.5. Despite the indication of jet precession in the total intensity structure, the polarization images suggest instead a jet re-directed at least twice by collisions with the external medium. Surprisingly, the electric vector position angles in the main body of the jet are neither longitudinal nor transverse, but make an angle of about 55 Degree-Sign with the jet axis in the middle while along the edges the vectors are transverse, suggesting a helical magnetic field. There is no significant Faraday rotation in the source, so that is not the cause of the twist. The fractional polarization in the jet averages 25% and is higher at the edges. In a companion paper, Roberts and Wardle show that differential Doppler boosting in a diverging relativistic velocity field can explain the electric vector pattern in the jet.

  19. COSMIC ORIGINS SPECTROGRAPH OBSERVATIONS OF WARM INTERVENING GAS AT z {approx} 0.325 TOWARD 3C 263

    SciTech Connect (OSTI)

    Narayanan, Anand [Indian Institute of Space Science and Technology, Thiruvananthapuram 695547, Kerala (India); Savage, Blair D.; Wakker, Bart P., E-mail: anand@iist.ac.in, E-mail: savage@astro.wisc.edu, E-mail: wakker@astro.wisc.edu [Department of Astronomy, University of Wisconsin-Madison, 5534 Sterling Hall, 475 N. Charter Street, Madison, WI 53706-1582 (United States)

    2012-06-10

    We present HST/COS high-S/N observations of the z = 0.32566 multiphase absorber toward 3C 263. The Cosmic Origins Spectrograph (COS) data show absorption from H I (Ly{alpha} to Ly{theta}), O VI, C III, N III, Si III, and C II. The Ne VIII in this absorber is detected in the FUSE spectrum along with O III, O IV, and N IV. The low and intermediate ions are kinematically aligned with each other and H I and display narrow line widths of b {approx} 6-8 km s{sup -1}. The O VI {lambda}{lambda}1031, 1037 lines are kinematically offset by {Delta}v {approx} 12 km s{sup -1} from the low ions and are a factor of {approx}4 broader. All metal ions except O VI and Ne VIII are consistent with an origin in gas photoionized by the extragalactic background radiation. The bulk of the observed H I is also traced by this photoionized medium. The metallicity in this gas phase is Z {approx}> 0.15 Z{sub Sun} with carbon having near-solar abundances. The O VI and Ne VIII favor an origin in collisionally ionized gas at T = 5.2 Multiplication-Sign 10{sup 5} K. The H I absorption associated with this warm absorber is a broad-Ly{alpha} absorber (BLA) marginally detected in the COS spectrum. This warm gas phase has a metallicity of [X/H] {approx}-0.12 dex, and a total hydrogen column density of N( H) {approx} 3 Multiplication-Sign 10{sup 19} cm{sup -2}, which is {approx}2 dex higher than what is traced by the photoionized gas. Simultaneous detection of O VI, Ne VIII, and BLAs in an absorber can be a strong diagnostic of gas with T {approx} 10{sup 5}-10{sup 6} K corresponding to the warm phase of the warm-hot intergalactic medium or shock-heated gas in the extended halos of galaxies.

  20. Integrated optical biosensor system (IOBS)

    DOE Patents [OSTI]

    Grace, Karen M.; Sweet, Martin R.; Goeller, Roy M.; Morrison, Leland Jean; Grace, Wynne Kevin; Kolar, Jerome D.

    2007-10-30

    An optical biosensor has a first enclosure with a pathogen recognition surface, including a planar optical waveguide and grating located in the first enclosure. An aperture is in the first enclosure for insertion of sample to be investigated to a position in close proximity to the pathogen recognition surface. A laser in the first enclosure includes means for aligning and means for modulating the laser, the laser having its light output directed toward said grating. Detection means are located in the first enclosure and in optical communication with the pathogen recognition surface for detecting pathogens after interrogation by the laser light and outputting the detection. Electronic means is located in the first enclosure and receives the detection for processing the detection and outputting information on the detection, and an electrical power supply is located in the first enclosure for supplying power to the laser, the detection means and the electronic means.

  1. Quantum Optics

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

    Quantum Optics - Sandia Energy Energy Search Icon Sandia Home Locations Contact Us Employee Locator Energy & Climate Secure & Sustainable Energy Future Stationary Power Energy Conversion Efficiency Solar Energy Wind Energy Water Power Supercritical CO2 Geothermal Natural Gas Safety, Security & Resilience of the Energy Infrastructure Energy Storage Nuclear Power & Engineering Grid Modernization Battery Testing Nuclear Energy Defense Waste Management Programs Advanced Nuclear

  2. High-performance parallel interface to synchronous optical network gateway

    DOE Patents [OSTI]

    St. John, Wallace B.; DuBois, David H.

    1996-01-01

    A system of sending and receiving gateways interconnects high speed data interfaces, e.g., HIPPI interfaces, through fiber optic links, e.g., a SONET network. An electronic stripe distributor distributes bytes of data from a first interface at the sending gateway onto parallel fiber optics of the fiber optic link to form transmitted data. An electronic stripe collector receives the transmitted data on the parallel fiber optics and reforms the data into a format effective for input to a second interface at the receiving gateway. Preferably, an error correcting syndrome is constructed at the sending gateway and sent with a data frame so that transmission errors can be detected and corrected in a real-time basis. Since the high speed data interface operates faster than any of the fiber optic links the transmission rate must be adapted to match the available number of fiber optic links so the sending and receiving gateways monitor the availability of fiber links and adjust the data throughput accordingly. In another aspect, the receiving gateway must have sufficient available buffer capacity to accept an incoming data frame. A credit-based flow control system provides for continuously updating the sending gateway on the available buffer capacity at the receiving gateway.

  3. High-performance parallel interface to synchronous optical network gateway

    DOE Patents [OSTI]

    St. John, W.B.; DuBois, D.H.

    1996-12-03

    Disclosed is a system of sending and receiving gateways interconnects high speed data interfaces, e.g., HIPPI interfaces, through fiber optic links, e.g., a SONET network. An electronic stripe distributor distributes bytes of data from a first interface at the sending gateway onto parallel fiber optics of the fiber optic link to form transmitted data. An electronic stripe collector receives the transmitted data on the parallel fiber optics and reforms the data into a format effective for input to a second interface at the receiving gateway. Preferably, an error correcting syndrome is constructed at the sending gateway and sent with a data frame so that transmission errors can be detected and corrected in a real-time basis. Since the high speed data interface operates faster than any of the fiber optic links the transmission rate must be adapted to match the available number of fiber optic links so the sending and receiving gateways monitor the availability of fiber links and adjust the data throughput accordingly. In another aspect, the receiving gateway must have sufficient available buffer capacity to accept an incoming data frame. A credit-based flow control system provides for continuously updating the sending gateway on the available buffer capacity at the receiving gateway. 7 figs.

  4. Two position optical element actuator device

    DOE Patents [OSTI]

    Holdener, Fred R.; Boyd, Robert D.

    2002-01-01

    The present invention is a two position optical element actuator device utilizing a powered means to hold an actuation arm, to which an optical element is attached, in a first position. A non-powered means drives the actuation arm to a second position, when the powered means ceases to receive power. The optical element may be a electromagnetic (EM) radiation or particle source, an instrument, or EM radiation or particle transmissive, reflective or absorptive elements. A bearing is used to transfer motion and smoothly transition the actuation arm from the first to second position.

  5. Microbend fiber-optic chemical sensor

    DOE Patents [OSTI]

    Weiss, Jonathan D.

    2002-01-01

    A microbend fiber-optic chemical sensor for detecting chemicals in a sample, and a method for its use, is disclosed. The sensor comprises at least one optical fiber having a microbend section (a section of small undulations in its axis), for transmitting and receiving light. In transmission, light guided through the microbend section scatters out of the fiber core and interacts, either directly or indirectly, with the chemical in the sample, inducing fluorescence radiation. Fluorescence radiation is scattered back into the microbend section and returned to an optical detector for determining characteristics of the fluorescence radiation quantifying the presence of a specific chemical.

  6. Optical analyzer

    DOE Patents [OSTI]

    Hansen, Anthony D.

    1989-01-01

    An optical analyzer (10) wherein a sample (19) of particulate matter, and particularly of organic matter, which has been collected on a quartz fiber filter (20) is placed in a combustion tube (11), and light from a light source (14) is passed through the sample (19). The temperature of the sample (19) is raised at a controlled rate and in a controlled atmosphere. The magnitude of the transmission of light through the sample (19) is detected (18) as the temperature is raised. A data processor (23), differentiator (28) and a two pen recorder (24) provide a chart of the optical transmission versus temperature and the rate of change of optical transmission versus temperature signatures (T and D) of the sample (19). These signatures provide information as to physical and chemical processes and a variety of quantitative and qualitative information about the sample (19). Additional information is obtained by repeating the run in different atmospheres and/or different rates of heating with other samples of the same particulate material collected on other filters.

  7. Optical add/drop filter for wavelength division multiplexed systems

    DOE Patents [OSTI]

    Deri, Robert J.; Strand, Oliver T.; Garrett, Henry E.

    2002-01-01

    An optical add/drop filter for wavelength division multiplexed systems and construction methods are disclosed. The add/drop filter includes a first ferrule having a first pre-formed opening for receiving a first optical fiber; an interference filter oriented to pass a first set of wavelengths along the first optical fiber and reflect a second set of wavelengths; and, a second ferrule having a second pre-formed opening for receiving the second optical fiber, and the reflected second set of wavelengths. A method for constructing the optical add/drop filter consists of the steps of forming a first set of openings in a first ferrule; inserting a first set of optical fibers into the first set of openings; forming a first set of guide pin openings in the first ferrule; dividing the first ferrule into a first ferrule portion and a second ferrule portion; forming an interference filter on the first ferrule portion; inserting guide pins through the first set of guide pin openings in the first ferrule portion and second ferrule portion to passively align the first set of optical fibers; removing material such that light reflected from the interference filter from the first set of optical fibers is accessible; forming a second set of openings in a second ferrule; inserting a second set of optical fibers into the second set of openings; and positioning the second ferrule with respect to the first ferrule such that the second set of optical fibers receive the light reflected from the interference filter.

  8. Fiber optic monitoring device

    DOE Patents [OSTI]

    Samborsky, James K.

    1993-01-01

    A device for the purpose of monitoring light transmissions in optical fibers comprises a fiber optic tap that optically diverts a fraction of a transmitted optical signal without disrupting the integrity of the signal. The diverted signal is carried, preferably by the fiber optic tap, to a lens or lens system that disperses the light over a solid angle that facilitates viewing. The dispersed light indicates whether or not the monitored optical fiber or system of optical fibers is currently transmitting optical information.

  9. Method to determine and adjust the alignment of the transmitter and receiver fields of view of a LIDAR system

    DOE Patents [OSTI]

    Schmitt, Randal L.; Henson, Tammy D.; Krumel, Leslie J.; Hargis, Jr., Philip J.

    2006-06-20

    A method to determine the alignment of the transmitter and receiver fields of view of a light detection and ranging (LIDAR) system. This method can be employed to determine the far-field intensity distribution of the transmitter beam, as well as the variations in transmitted laser beam pointing as a function of time, temperature, or other environmental variables that may affect the co-alignment of the LIDAR system components. In order to achieve proper alignment of the transmitter and receiver optical systems when a LIDAR system is being used in the field, this method employs a laser-beam-position-sensing detector as an integral part of the receiver optics of the LIDAR system.

  10. Power optics

    SciTech Connect (OSTI)

    Apollonov, V V

    2014-02-28

    By using the theory we developed in the early 1970s, a broad range of phenomena is considered for an optical surface of a solid body that is exposed to radiation arbitrarily varying in time and producing temperature fields, thermoelastic stresses and thermal deformations on the surface layer. The examination is based on the relations (which are similar to Duhamel's integral formula from the theory of heat conduction) between the quantities characterising the thermal stress state in any nonstationary regimes of energy input into a solid. A peculiar feature of the analysis of the thermal stress state in this case consists in the fact that this relation comprises time as a parameter, which in turn is a consequence of incoherence of the quasi-stationary problem of thermoelasticity. This phenomenon is particularly important for the optics of high-power, high-pulse repetition rate lasers, which are being actively developed. In the review, we have recently published in Laser Physics, the thermal stress state of a solid is analysed. In this state, time is treated as an independent variable used in differentiation. Such an approach greatly reduces the applicability of the method. The review published contains data on the use of capillary porous structures made of various materials with different degrees of the surface development. Moreover, such structures can be efficiently employed to increase the heat exchange at a temperature below the boiling point of the coolant. In the present review we discuss the dependences of the limiting laser intensities on the duration of a pulse or a pulse train, corresponding to the three stages of the state of the reflecting surface and leading to unacceptable elastic deformations of the surface, to the plastic yield of the material accompanied by the formation of residual stresses and to the melting of the surface layer. We also analyse the problem of heat exchange in the surface layer with a liquid metal coolant pumped through it. The

  11. High-Efficiency Receivers for Supercritical Carbon Dioxide Cycles...

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

    More Documents & Publications High-Efficiency Low-Cost Solar Receiver for Use in a Supercritical CO2 Recompression Cycle - FY13 Q1 High-Efficiency Receivers for...

  12. Energy-Department Supported Scientist Receives Nobel Prize for...

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

    scientists to receive the Nobel Prize in Physics for their invention of the blue light ... scientists to receive the Nobel Prize in Physics for their invention of the blue light ...

  13. Sixty-Eight Students to Receive Nuclear Energy Scholarships and...

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

    Sixty-Eight Students to Receive Nuclear Energy Scholarships and Fellowships Sixty-Eight Students to Receive Nuclear Energy Scholarships and Fellowships July 17, 2013 - 10:30am ...

  14. Public Comment Received on Proposed Revisions to DOE's NEPA Rule...

    Energy Savers [EERE]

    Public Comment Received on Proposed Revisions to DOE's NEPA Rule: 10 CFR Part 1021 Public Comment Received on Proposed Revisions to DOE's NEPA Rule: 10 CFR Part 1021 Public Comment...

  15. Five Native Colleges Receive Grants to Advance Tribal Careers...

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

    Five Native Colleges Receive Grants to Advance Tribal Careers in STEM Five Native Colleges Receive Grants to Advance Tribal Careers in STEM November 3, 2015 - 2:53pm Addthis On ...

  16. Waste Isolation Pilot Plant Contractor Receives 86 Percent of...

    Office of Environmental Management (EM)

    Waste Isolation Pilot Plant Contractor Receives 86 Percent of Available Fee April 27, 2016 - 12:20pm Addthis Nuclear Waste Partnership received about 86 percent of the available ...

  17. Seventy-Five Students to Receive Nuclear Energy Scholarships...

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

    Seventy-Five Students to Receive Nuclear Energy Scholarships and Fellowships Seventy-Five Students to Receive Nuclear Energy Scholarships and Fellowships May 9, 2014 - 11:17am...

  18. Department of Energy Receives 2013 Partners in Conservation Award...

    Energy Savers [EERE]

    Receives 2013 Partners in Conservation Award Department of Energy Receives 2013 Partners in Conservation Award June 5, 2014 - 11:38am Addthis The Department of Energy (DOE), along ...

  19. Energy Department Receives EPA Award for Top Green Power Purchase...

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

    Receives EPA Award for Top Green Power Purchase Energy Department Receives EPA Award for Top Green Power Purchase September 24, 2013 - 12:19pm Addthis The Energy Department ...

  20. Optical seismic sensor systems and methods

    DOE Patents [OSTI]

    Beal, A. Craig; Cummings, Malcolm E.; Zavriyev, Anton; Christensen, Caleb A.; Lee, Keun

    2015-12-08

    Disclosed is an optical seismic sensor system for measuring seismic events in a geological formation, including a surface unit for generating and processing an optical signal, and a sensor device optically connected to the surface unit for receiving the optical signal over an optical conduit. The sensor device includes at least one sensor head for sensing a seismic disturbance from at least one direction during a deployment of the sensor device within a borehole of the geological formation. The sensor head includes a frame and a reference mass attached to the frame via at least one flexure, such that movement of the reference mass relative to the frame is constrained to a single predetermined path.

  1. Y-12 employees receive awards recognizing excellence in nuclear weapons

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

    program | Y-12 National Security Complex receive ... Y-12 employees receive awards recognizing excellence in nuclear weapons program Posted: October 6, 2014 - 9:09am Defense Programs 2013 Award of Excellence recipient Penny Cunningham receives congratulations from Jim Haynes (far left), CNS president and CEO, Tim Driscoll, NNSA uranium program manager, and Mark Padilla, NPO's assistant manager for programs and projects. Thirteen Y-12 teams received DP Awards of Excellence for 2013 at a

  2. Zelenay receives professorship in chemistry from president of Poland

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

    Zelenay receives professorship in chemistry from president of Poland Zelenay receives professorship in chemistry from president of Poland Piotr Zelenay of Materials Synthesis and Integrated Devices (MPA-11) received the honorary title of Professor in Chemistry from Poland's President Bronisław Komorowski during a June 23 ceremony at the Presidential Palace in Warsaw. October 8, 2015 Zelenay receives professorship in chemistry from president of Poland Piotr Zelenay, right, shakes hands with

  3. Current Fiscal Year FOIA Requests received by Golden Field Office |

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

    Department of Energy Current Fiscal Year FOIA Requests received by Golden Field Office Current Fiscal Year FOIA Requests received by Golden Field Office Golden Field Office Status of FOIA Requests Received -- Current Quarter FY'16, from the U.S. Department of Energy. GFO Status of FOIA Requests Received (1.31 MB) More Documents & Publications EA-1245: Finding of No Significant Impact EA-1875: Final Environmental Assessment EA-1761: Final Environmental Assessment

  4. Project Profile: Advanced Nitrate Salt Central Receiver Power Plant |

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

    Department of Energy Nitrate Salt Central Receiver Power Plant Project Profile: Advanced Nitrate Salt Central Receiver Power Plant Abengoa logo Abengoa, under the Baseload CSP FOA, demonstrated a 100-megawatt electrical (MWe) central receiver plant using nitrate salt as the receiver coolant, thermal storage medium, and heat transport fluid in the steam generator. Approach Photo of two lit towers surrounded by much smaller blue flat plates that are mounted on the ground. Abengoa planned to

  5. Project Profile: High-Efficiency Receivers for Supercritical Carbon Dioxide

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

    Cycles | Department of Energy Receivers for Supercritical Carbon Dioxide Cycles Project Profile: High-Efficiency Receivers for Supercritical Carbon Dioxide Cycles Brayton logo --This project is inactive -- Brayton Energy, under the 2012 SunShot Concentrating Solar Power (CSP) R&D FOA, is building and testing a new solar receiver that uses supercritical carbon dioxide (s-CO2) as the heat-transfer fluid. The research team is designing the receiver to withstand higher operating temperatures

  6. Project Profile: High-Flux Microchannel Solar Receiver | Department of

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

    Energy Flux Microchannel Solar Receiver Project Profile: High-Flux Microchannel Solar Receiver Oregon logo -- This project is inactive -- Oregon State University and its partners, under the 2012 SunShot Concentrating Solar Power (CSP) R&D funding opportunity announcement (FOA), are working to develop an advanced heat exchanger for use in CSP receivers. The heat exchanger has the potential to significantly increase heat transfer and reduce the size of the receiver. Approach Illustration

  7. Los Alamos National Laboratory receives Department of Energy...

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

    DOE environmental sustainability award Los Alamos National Laboratory receives Department of Energy environmental sustainability award EStar awards recognize excellence in ...

  8. High Flux Microchannel Solar Receiver Development with Adaptive Flow

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

    Control | Department of Energy Flux Microchannel Solar Receiver Development with Adaptive Flow Control High Flux Microchannel Solar Receiver Development with Adaptive Flow Control This presentation was delivered at the SunShot Concentrating Solar Power (CSP) Program Review 2013, held April 23-25, 2013 near Phoenix, Arizona. csp_review_meeting_042313_drost.pdf (1.81 MB) More Documents & Publications Microchannel Receiver Development - FY12 Q4 Microchannel Receiver Development - FY13 Q2

  9. Optical system for high resolution spectrometer/monochromator

    DOE Patents [OSTI]

    Hettrick, Michael C.; Underwood, James H.

    1988-01-01

    An optical system for use in a spectrometer or monochromator employing a mirror which reflects electromagnetic radiation from a source to converge with same in a plane. A straight grooved, varied-spaced diffraction grating receives the converging electromagnetic radiation from the mirror and produces a spectral image for capture by a detector, target or like receiver.

  10. Optical system for high resolution spectrometer/monochromator

    DOE Patents [OSTI]

    Hettrick, M.C.; Underwood, J.H.

    1988-10-11

    An optical system for use in a spectrometer or monochromator employing a mirror which reflects electromagnetic radiation from a source to converge with same in a plane is disclosed. A straight grooved, varied-spaced diffraction grating receives the converging electromagnetic radiation from the mirror and produces a spectral image for capture by a detector, target or like receiver. 11 figs.

  11. Optical transcutaneous bilirubin detector

    DOE Patents [OSTI]

    Kronberg, J.W.

    1991-03-04

    This invention consists of a transcutaneous bilirubin detector comprising a source of light having spectral components absorbable and not absorbable by bilirubin, a handle assembly, electronic circuitry and a fiber optic bundle connecting the assembly to the light source and circuitry. Inside the assembly is a prism that receives the light from one end of the fiber optic bundle and directs it onto the skin and directs the reflected light back into the bundle. The other end of the bundle is trifucated, with one end going to the light source and the other two ends going to circuitry that determines how much light of each kind has been reflected. A relatively greater amount absorbed by the skin from the portion of the spectrum absorbable by bilirubin may indicate the presence of the illness. Preferably, two measurements are made, one on the kneecap and one on the forehead, and compared to determine the presence of bilirubin. To reduce the impact of light absorption by hemoglobin in the blood carried by the skin, pressure is applied with a plunger and spring in the handle assembly, the pressure limited by points of a button slidably carried in the assembly that are perceived by touch when the pressure applied is sufficient.

  12. Optical transcutaneous bilirubin detector

    DOE Patents [OSTI]

    Kronberg, James W.

    1993-01-01

    A transcutaneous bilirubin detector comprising a source of light having spectral components absorbable and not absorbable by bilirubin, a handle assembly, electronic circuitry and a fiber optic bundle connecting the assembly to the light source and circuitry. Inside the assembly is a prism that receives the light from one end of the fiber optic bundle and directs it onto the skin and directs the reflected light back into the bundle. The other end of the bundle is trifucated, with one end going to the light source and the other two ends going to circuitry that determines how much light of each kind has been reflected. A relatively greater amount absorbed by the skin from the portion of the spectrum absorbable by bilirubin may indicate the presence of the illness. Preferably, two measurements are made, one on the kneecap and one on the forehead, and compared to determine the presence of bilirubin. To reduce the impact of light absorption by hemoglobin in the blood carried by the skin, pressure is applied with a plunger and spring in the handle assembly, the pressure limited by points of a button slidably carried in the assembly that are perceived by touch when the pressure applied is sufficient.

  13. Optical transcutaneous bilirubin detector

    DOE Patents [OSTI]

    Kronberg, J.W.

    1993-11-09

    A transcutaneous bilirubin detector is designed comprising a source of light having spectral components absorbable and not absorbable by bilirubin, a handle assembly, electronic circuitry and a fiber optic bundle connecting the assembly to the light source and circuitry. Inside the assembly is a prism that receives the light from one end of the fiber optic bundle and directs it onto the skin and directs the reflected light back into the bundle. The other end of the bundle is trifucated, with one end going to the light source and the other two ends going to circuitry that determines how much light of each kind has been reflected. A relatively greater amount absorbed by the skin from the portion of the spectrum absorbable by bilirubin may indicate the presence of the illness. Preferably, two measurements are made, one on the kneecap and one on the forehead, and compared to determine the presence of bilirubin. To reduce the impact of light absorption by hemoglobin in the blood carried by the skin, pressure is applied with a plunger and spring in the handle assembly, the pressure limited by points of a button slidably carried in the assembly that are perceived by touch when the pressure applied is sufficient. 6 figures.

  14. Parallel optical sampler

    DOE Patents [OSTI]

    Tauke-Pedretti, Anna; Skogen, Erik J; Vawter, Gregory A

    2014-05-20

    An optical sampler includes a first and second 1.times.n optical beam splitters splitting an input optical sampling signal and an optical analog input signal into n parallel channels, respectively, a plurality of optical delay elements providing n parallel delayed input optical sampling signals, n photodiodes converting the n parallel optical analog input signals into n respective electrical output signals, and n optical modulators modulating the input optical sampling signal or the optical analog input signal by the respective electrical output signals, and providing n successive optical samples of the optical analog input signal. A plurality of output photodiodes and eADCs convert the n successive optical samples to n successive digital samples. The optical modulator may be a photodiode interconnected Mach-Zehnder Modulator. A method of sampling the optical analog input signal is disclosed.

  15. Waltzer Receives NNSA Gold Medal Award | National Nuclear Security

    National Nuclear Security Administration (NNSA)

    Administration | (NNSA) Waltzer Receives NNSA Gold Medal Award June 26, 2014 Karl Waltzer, Acting Deputy Manager of the National Nuclear Security Administration's Production Office, has received the NNSA Gold Medal Award in recognition of his distinguished achievements in support of national security programs. File Waltzer Receives NNSA Gold Medal Award

  16. Y-12 Steam Plant Project Received National Recognition for Project

    National Nuclear Security Administration (NNSA)

    Management Excellence | National Nuclear Security Administration | (NNSA) Steam Plant Project Received National Recognition for Project Management Excellence March 23, 2011 Y-12 steam plant project receives national recognition for project management excellence. Y-12's Steam Plant Life Extension Project (SPLE) has received the Secretary of Energy's Project Management Improvement Award. Microsoft Office document icon NR-03-28

  17. Project Profile: Direct Supercritical Carbon Dioxide Receiver Development |

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

    Department of Energy Direct Supercritical Carbon Dioxide Receiver Development Project Profile: Direct Supercritical Carbon Dioxide Receiver Development National Renewable Energy Laboratory logo -- This project is inactive -- The National Renewable Energy Laboratory (NREL), under the National Laboratory R&D competitive funding opportunity, is working to develop, characterize, and experimentally demonstrate a novel high-temperature receiver technology using supercritical carbon dioxide

  18. OIG Receives Prestigious CIGIE Award | Department of Energy

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

    OIG Receives Prestigious CIGIE Award OIG Receives Prestigious CIGIE Award OIG Receives Prestigious CIGIE Award (103.17 KB) More Documents & Publications Audit Report: IG-0673 Preliminary Notice of Violation, Los Alamos National Security, LLC Combined Fiscal Year (FY) 2014 Annual Performance Results and FYs 2015 and 2016 Annual Performance Plan

  19. Compact self-contained electrical-to-optical converter/transmitter

    DOE Patents [OSTI]

    Seligmann, Daniel A. (Manteca, CA); Moss, William C. (San Mateo, CA); Valk, Theodore C. (Livermore, CA); Conder, Alan D. (Tracy, CA)

    1995-01-01

    A first optical receiver and a second optical receiver are provided for receiving a calibrate command and a power switching signal, respectively, from a remote processor. A third receiver is provided for receiving an analog electrical signal from a transducer. A calibrator generates a reference signal in response to the calibrate command. A combiner mixes the electrical signal with the reference signal to form a calibrated signal. A converter converts the calibrated signal to an optical signal. A transmitter transmits the optical signal to the remote processor. A primary battery supplies power to the calibrator, the combiner, the converter, and the transmitter. An optically-activated switch supplies power to the calibrator, the combiner, the converter, and the transmitter in response to the power switching signal. An auxiliary battery supplies power continuously to the switch.

  20. Compact self-contained electrical-to-optical converter/transmitter

    DOE Patents [OSTI]

    Seligmann, D.A.; Moss, W.C.; Valk, T.C.; Conder, A.D.

    1995-11-21

    A first optical receiver and a second optical receiver are provided for receiving a calibrate command and a power switching signal, respectively, from a remote processor. A third receiver is provided for receiving an analog electrical signal from a transducer. A calibrator generates a reference signal in response to the calibrate command. A combiner mixes the electrical signal with the reference signal to form a calibrated signal. A converter converts the calibrated signal to an optical signal. A transmitter transmits the optical signal to the remote processor. A primary battery supplies power to the calibrator, the combiner, the converter, and the transmitter. An optically-activated switch supplies power to the calibrator, the combiner, the converter, and the transmitter in response to the power switching signal. An auxiliary battery supplies power continuously to the switch. 13 figs.

  1. Optical devices

    DOE Patents [OSTI]

    Chaves, Julio C.; Falicoff, Waqidi; Minano, Juan C.; Benitez, Pablo; Dross, Oliver; Parkyn, Jr., William A.

    2010-07-13

    An optical manifold for efficiently combining a plurality of blue LED outputs to illuminate a phosphor for a single, substantially homogeneous output, in a small, cost-effective package. Embodiments are disclosed that use a single or multiple LEDs and a remote phosphor, and an intermediate wavelength-selective filter arranged so that backscattered photoluminescence is recycled to boost the luminance and flux of the output aperture. A further aperture mask is used to boost phosphor luminance with only modest loss of luminosity. Alternative non-recycling embodiments provide blue and yellow light in collimated beams, either separately or combined into white.

  2. Optical microfluidics

    SciTech Connect (OSTI)

    Kotz, K.T.; Noble, K.A.; Faris, G.W. [Molecular Physics Laboratory, SRI International, 333 Ravenswood Avenue, Menlo Park, California 94025 (United States)

    2004-09-27

    We present a method for the control of small droplets based on the thermal Marangoni effect using laser heating. With this approach, droplets covering five orders of magnitude in volume ({approx}1.7 {mu}L to 14 pL), immersed in decanol, were moved on an unmodified polystyrene surface, with speeds of up to 3 mm/s. When two droplets were brought into contact, they spontaneously fused and rapidly mixed in less than 33 ms. This optically addressed microfluidic approach has many advantages for microfluidic transport, including exceptional reconfigurability, low intersample contamination, large volume range, extremely simple substrates, no electrical connections, and ready scaling to large arrays.

  3. Optical data transmission at the superconducting super collider

    SciTech Connect (OSTI)

    Leskovar, B.

    1989-04-01

    Digital and analog data transmissions via fiber optics for the Superconducting Super Collider have been investigated. The state of the art of optical transmitters, low loss fiber waveguides, receivers and associated electronics components are reviewed and summarized. Emphasis is placed on the effects of the radiation environment on the performance of an optical data transmission system components. Also, the performance of candidate components of the wide band digital and analog transmission systems intended for deployment in the Superconducting Super Collider Detector is discussed.

  4. Micropower RF transponder with superregenerative receiver and RF receiver with sampling mixer

    DOE Patents [OSTI]

    McEwan, Thomas E.

    1997-01-01

    A micropower RF transdponder employs a novel adaptation of the superregenerative receiver wherein the quench oscillator is external to the regenerative transistor. The quench oscillator applies an exponentially decaying waveform rather than the usual sinewave to achieve high sensitivity at microampere current levels. Further improvements include circuit simplifications for antenna coupling, extraction of the detected signal, and a low-voltage bias configuration that allows operation with less than a 1-volt rail voltage. The inventive transponder is expected to operate as long as the battery shelf life.

  5. Micropower RF transponder with superregenerative receiver and RF receiver with sampling mixer

    DOE Patents [OSTI]

    McEwan, T.E.

    1997-05-13

    A micropower RF transponder employs a novel adaptation of the superregenerative receiver wherein the quench oscillator is external to the regenerative transistor. The quench oscillator applies an exponentially decaying waveform rather than the usual sinewave to achieve high sensitivity at microampere current levels. Further improvements include circuit simplifications for antenna coupling, extraction of the detected signal, and a low-voltage bias configuration that allows operation with less than a 1-volt rail voltage. The inventive transponder is expected to operate as long as the battery shelf life. 13 figs.

  6. Optical interconnect assembly

    DOE Patents [OSTI]

    Laughlin, Daric; Abel, Philip

    2015-06-09

    An optical assembly includes a substrate with a first row of apertures and a second row of apertures. A first optical die includes a first plurality of optical transducer elements and is mounted on the substrate such that an optical signal interface of each transducer element is aligned with an aperture of the first row of optical apertures. A second optical die includes a second plurality of optical transducer elements and is mounted on the substrate such that an optical signal interface of each of the second plurality of optical transducer elements is aligned with an aperture of the second row of optical apertures. A connector configured to mate with the optical assembly supports a plurality of optical fibers. A terminal end of each optical fiber protrudes from the connector and extends into one of the apertures when the connector is coupled with the optical assembly.

  7. Solid-state graphene formation via a nickel carbide intermediate phase [Nickel carbide (Ni3C) as an intermediate phase for graphene formation

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

    Xiong, W; Zhou, Yunshen; Hou, Wenjia; Guillemet, Thomas; Silvain, Jean-François; Lahaye, Michel; Lebraud, Eric; Xu, Shen; Wang, Xinwei; Cullen, David A; et al

    2015-01-01

    Direct formation of graphene with controlled number of graphitic layers on dielectric surfaces is highly desired for practical applications. Despite significant progress achieved in understanding the formation of graphene on metallic surfaces through chemical vapor deposition (CVD) of hydrocarbons, very limited research is available elucidating the graphene formation process via rapid thermal processing (RTP) of solid-state amorphous carbon, through which graphene is formed directly on dielectric surfaces accompanied by autonomous nickel evaporation. It is suggested that a metastable hexagonal nickel carbide (Ni3C) intermediate phase plays a critical role in transforming amorphous carbon to 2D crystalline graphene and contributing to themore » autonomous Ni evaporation. Temperature resolved carbon and nickel evolution in the RTP process is investigated using Auger electron spectroscopic (AES) depth profiling and glancing-angle X-ray diffraction (GAXRD). Formation, migration and decomposition of the hexagonal Ni3C are confirmed to be responsible for the formation of graphene and the evaporation of Ni at 1100 °C. The Ni3C-assisted graphene formation mechanism expands the understanding of Ni-catalyzed graphene formation, and provides insightful guidance for controlled growth of graphene through the solid-state transformation process.« less

  8. Power selective optical filter devices and optical systems using same

    SciTech Connect (OSTI)

    Koplow, Jeffrey P

    2014-10-07

    In an embodiment, a power selective optical filter device includes an input polarizer for selectively transmitting an input signal. The device includes a wave-plate structure positioned to receive the input signal, which includes at least one substantially zero-order, zero-wave plate. The zero-order, zero-wave plate is configured to alter a polarization state of the input signal passing in a manner that depends on the power of the input signal. The zero-order, zero-wave plate includes an entry and exit wave plate each having a fast axis, with the fast axes oriented substantially perpendicular to each other. Each entry wave plate is oriented relative to a transmission axis of the input polarizer at a respective angle. An output polarizer is positioned to receive a signal output from the wave-plate structure and selectively transmits the signal based on the polarization state.

  9. Optical manifold

    DOE Patents [OSTI]

    Falicoff, Waqidi; Chaves, Julio C.; Minano, Juan Carlos; Benitez, Pablo; Dross, Oliver; Parkyn, Jr., William A.

    2010-02-23

    Optical systems are described that have at least one source of a beam of blue light with divergence under 15.degree.. A phosphor emits yellow light when excited by the blue light. A collimator is disposed with the phosphor and forms a yellow beam with divergence under 15.degree.. A dichroic filter is positioned to transmit the beam of blue light to the phosphor and to reflect the beam of yellow light to an exit aperture. In different embodiments, the beams of blue and yellow light are incident upon said filter with central angles of 15.degree., 22.degree., and 45.degree.. The filter may reflect all of one polarization and part of the other polarization, and a polarization rotating retroreflector may then be provided to return the unreflected light to the filter.

  10. Combustion synthesized nanocrystalline Li{sub 3}V{sub 2}(PO{sub 4}){sub 3}/C cathode for lithium-ion batteries

    SciTech Connect (OSTI)

    Nathiya, K.; Bhuvaneswari, D.; Gangulibabu; Kalaiselvi, N.

    2012-12-15

    Graphical abstract: Nanocrystalline Li{sub 3}V{sub 2}(PO{sub 4}){sub 3}/C compound has been synthesized using a novel corn assisted combustion (CAC) method, wherein the composite prepared at 850 °C is found to exhibit superior physical and electrochemical properties than the one synthesized at 800 °C (Fig. 1). Despite the charge disproportionation of V{sup 4+} and a possible solid solution behavior of Li{sub 3}V{sub 2}(PO{sub 4}){sub 3} cathode upon insertion and de-insertion of Li{sup +} ions, the structural stability of the same is appreciable, even with the extraction of third lithium at 4.6 V (Fig. 2). An appreciable specific capacity of 174 mAh g{sup −1} with an excellent columbic efficiency (99%) and better capacity retention upon high rate applications have been exhibited by Li{sub 3}V{sub 2}(PO{sub 4}){sub 3}/C cathode, thus demonstrating the feasibility of CAC method in preparing the title compound to best suit with the needs of lithium battery applications. Display Omitted Highlights: ► Novel corn assisted combustion method has been used to synthesize Li{sub 3}V{sub 2}(PO{sub 4}){sub 3}/C. ► Corn is a cheap and eco benign combustible fuel to facilitate CAC synthesis. ► Li{sub 3}V{sub 2}(PO{sub 4}){sub 3}/C exhibits an appreciable specific capacity of 174 mAh g{sup −1} (C/10 rate). ► Currently observed columbic efficiency of 99% is better than the reported behavior. ► Suitability of Li{sub 3}V{sub 2}(PO{sub 4}){sub 3}/C cathode up to 10C rate is demonstrated. -- Abstract: Nanocrystalline Li{sub 3}V{sub 2}(PO{sub 4}){sub 3}/C composite synthesized using a novel corn assisted combustion method at 850 °C exhibits superior physical and electrochemical properties than the one synthesized at 800 °C. Despite the charge disproportionation of V{sup 4+} and a possible solid solution behavior of Li{sub 3}V{sub 2}(PO{sub 4}){sub 3} cathode upon insertion and extraction of Li{sup +} ions, the structural stability of the same is appreciable, even with

  11. Radiant energy receiver having improved coolant flow control means

    DOE Patents [OSTI]

    Hinterberger, H.

    1980-10-29

    An improved coolant flow control for use in radiant energy receivers of the type having parallel flow paths is disclosed. A coolant performs as a temperature dependent valve means, increasing flow in the warmer flow paths of the receiver, and impeding flow in the cooler paths of the receiver. The coolant has a negative temperature coefficient of viscosity which is high enough such that only an insignificant flow through the receiver is experienced at the minimum operating temperature of the receiver, and such that a maximum flow is experienced at the maximum operating temperature of the receiver. The valving is accomplished by changes in viscosity of the coolant in response to the coolant being heated and cooled. No remotely operated valves, comparators or the like are needed.

  12. Borehole optical lateral displacement sensor

    DOE Patents [OSTI]

    Lewis, R.E.

    1998-10-20

    There is provided by this invention an optical displacement sensor that utilizes a reflective target connected to a surface to be monitored to reflect light from a light source such that the reflected light is received by a photoelectric transducer. The electric signal from the photoelectric transducer is then imputed into electronic circuitry to generate an electronic image of the target. The target`s image is monitored to determine the quantity and direction of any lateral displacement in the target`s image which represents lateral displacement in the surface being monitored. 4 figs.

  13. More than 230 nonprofit organizations to receive monetary donations from

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

    Los Alamos National Security, LLC Nonprofit organizations to receive monetary donations from LANS More than 230 nonprofit organizations to receive monetary donations from Los Alamos National Security, LLC Nonprofit organizations will receive more than $180,000 from LANS, LLC. June 25, 2012 image description LANL employees Randy Erickson, left, and Louise Mendius, right, help fill sandbags at Santa Clara Pueblo. Contact Steve Sandoval Communications Office (505) 665-9206 Email The genuine

  14. Eleven nonprofit organizations receive community giving grants from Los

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

    Alamos National Security, LLC Organizations receive community giving grants Eleven nonprofit organizations receive community giving grants from Los Alamos National Security, LLC The organizations received grants for projects that range from a summer camp for children with Autism Spectrum Disorders to providing winter coats and shoes for needy children. December 15, 2009 Los Alamos National Laboratory sits on top of a once-remote mesa in northern New Mexico with the Jemez mountains as a

  15. NIS receives two NAGC awards | National Nuclear Security Administration |

    National Nuclear Security Administration (NNSA)

    (NNSA) NIS receives two NAGC awards Wednesday, July 2, 2014 - 12:17pm NNSA's Office of Nonproliferation and International Security (NIS) received two awards from the National Association of Government Communicators (NAGC) Blue Pencil and Gold Screen Awards Competition. It received First Place in the External Newsletter category and an Award of Excellence in the Annual Report category for its FY 2012 report. The NAGC Blue Pencil & Gold Screen Awards Competition salutes superior

  16. Receiving Your EERE Funding Award | Department of Energy

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

    Manage Awards » Receiving Your EERE Funding Award Receiving Your EERE Funding Award Approximately two weeks after completing successful award negotiations, you will receive a notification from FedConnect that your cooperative agreement award package is ready to download. The award package consists of six elements (listed below), all of which explain the recipient's duties and responsibilities during the performance and closeout of the award. Assistance Agreement This section includes only

  17. NEJC Board Member Receives 2015 National Planning Excellence Award |

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

    Department of Energy Board Member Receives 2015 National Planning Excellence Award NEJC Board Member Receives 2015 National Planning Excellence Award National Environmental Justice Conference, Inc. Board of Directors Member Receives American Planning Association 2015 National Planning Excellence Award (122.22 KB) More Documents & Publications NEJC Honors EJ Leaders and Pioneers 2015 National Environmental Justice Conference and Training Program Concludes in Washington, DC Preparations

  18. Young Physicist from Syracuse University Receives Jefferson Lab's 2014

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

    Thesis Prize | Jefferson Lab Physicist from Syracuse University Receives Jefferson Lab's 2014 Thesis Prize Young Physicist from Syracuse University Receives Jefferson Lab's 2014 Thesis Prize Beminiwattha Rakitha Beminiwattha NEWPORT NEWS, VA, June 6, 2014 - A young researcher, who worked on software development and data analysis for a major physics experiment conducted at the Thomas Jefferson National Accelerator Facility, has received an award for the thesis he wrote about his efforts.

  19. Energy Department Receives Prestigious Closing the Circle Awards for

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

    Environmental Stewardship | Department of Energy Receives Prestigious Closing the Circle Awards for Environmental Stewardship Energy Department Receives Prestigious Closing the Circle Awards for Environmental Stewardship June 13, 2007 - 1:40pm Addthis DOE Won Four Out of Ten Civilian Awards WASHINGTON, DC - The Department of Energy (DOE) this week received four White House Closing the Circle (CTC) awards, which recognize federal leadership in green purchasing, electronics recycling, and

  20. Project Profile: Advanced Low-Cost Receivers for Parabolic Troughs |

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

    Department of Energy Low-Cost Receivers for Parabolic Troughs Project Profile: Advanced Low-Cost Receivers for Parabolic Troughs Norwich Technologies logo -- This project is inactive -- Norwich Technologies, under the 2012 SunShot Concentrating Solar Power (CSP) R&D FOA, is developing a novel receiver for parabolic trough CSP systems that will dramatically improve performance while substantially reducing acquisition and operation and maintenance (O&M) costs. Approach Two side-by-side

  1. Project Profile: Particle Receiver Integrated with a Fluidized Bed |

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

    Department of Energy Particle Receiver Integrated with a Fluidized Bed Project Profile: Particle Receiver Integrated with a Fluidized Bed NREL logo -- This project is inactive -- The National Renewable Energy Laboratory (NREL) and its partners, under the 2012 SunShot Concentrating Solar Power (CSP) R&D funding opportunity announcement (FOA), are developing a novel receiver that uses falling particles instead of liquid for the heat-transfer fluid (HTF). The research team aims to build a

  2. Los Alamos National Laboratory employees receive Pollution Prevention

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

    Awards Employees Receive Pollution Prevention Awards Los Alamos National Laboratory employees receive Pollution Prevention Awards Nearly 400 employees on 47 teams received Pollution Prevention awards for protecting the environment and saving taxpayers more than $8 million. April 23, 2013 Molten plutonium in a crucible. The improved processing of old plutonium generates less than half of the waste of the former process. Molten plutonium in a crucible. The improved processing of old plutonium

  3. Los Alamos National Laboratory employees receive Pollution Prevention

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

    awards Employees receive Pollution Prevention awards Los Alamos National Laboratory employees receive Pollution Prevention awards Nearly 400 employees on 47 teams received Pollution Prevention awards for protecting the environment and saving taxpayers more than $8 million. April 23, 2013 Molten plutonium in a crucible. The improved processing of old plutonium generates less than half of the waste of the former process. Molten plutonium in a crucible. The improved processing of old plutonium

  4. Los Alamos National Laboratory receives Star Status recognition for safety

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

    excellence from Department of Energy LANL receives recognition for safety excellence Los Alamos National Laboratory receives Star Status recognition for safety excellence from Department of Energy Los Alamos becomes the largest site in the DOE complex to receive VPP Star Status. October 8, 2014 Officials from the Department of Energy and the National Nuclear Security Administration joined Laboratory managers and employees at a VPP Star flag raising ceremony. Officials from the Department of

  5. Los Alamos National Laboratory receives second Presidential Award as a

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

    climate champion LANL receives second Presidential Award as a climate champion Los Alamos National Laboratory receives second Presidential Award as a climate champion The awards honor federal teams, projects, facilities and programs that exemplify President Obama's charge to lead by example towards a clean energy economy. December 8, 2015 Los Alamos National Laboratory recently received a second presidential award as a climate champion. From left are: Mathew Moury, Associate Under Secretary

  6. Los Alamos team receives DOE Secretary's Achievement Award

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

    Los Alamos team receives DOE Secretary's Achievement Award Los Alamos team receives DOE Secretary's Achievement Award The Radiological Laboratory Utility Office Building (RLUOB) Transition Team received the U.S. Department of Energy Secretary's Achievement Award for its teamwork and performance. September 8, 2015 The DOE Secretary's Achievement Award is presented to the RLUOB Transfer Team. Top (from left): David Gallimore, Brett Cederdahl, Mike Parkes, Tim Leckbee and Tim Nelson. Bottom (from

  7. Vehicle Technologies Office: Awards Received | Department of Energy

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

    News » Vehicle Technologies Office: Awards Received Vehicle Technologies Office: Awards Received The Department of Energy's investments in research and development have significantly influenced our nation's transportation sector. The Vehicle Technologies Office has received a number of awards throughout the years reaffirming the importance of this research and its results. These awards highlight the positive impact of VTO's work with national laboratories and industry partners, including

  8. More than 240 nonprofit organizations to receive monetary donations from

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

    Los Alamos National Security, LLC Nonprofit organizations to receive monetary donations from LANS More than 240 nonprofit organizations to receive monetary donations from Los Alamos National Security, LLC Organizations will receive more than $180,000 from Los Alamos National Security. June 10, 2013 Los Alamos National Laboratory employees Cynthia Fuentes, left, and Brian Foley, right, help fill sandbags at Santa Clara Pueblo in 2011. They are assisted by Brenden Baca, 9. Los Alamos National

  9. DOE to Expedite Disbursement of Funds Received via Stimulus Act |

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

    Department of Energy to Expedite Disbursement of Funds Received via Stimulus Act DOE to Expedite Disbursement of Funds Received via Stimulus Act February 25, 2009 - 12:06pm Addthis Photo of President Obama and Secretary Chu talking. Energy Secretary Steven Chu has announced a sweeping restructuring of DOE's processes for issuing direct loans, loan guarantees, and other funds to expedite the disbursement of the DOE funds received via the American Recovery and Reinvestment Act (ARRA). DOE will

  10. WIPP Receives First Remote-Handled Waste Shipment From Sandia...

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

    For immediate release WIPP Receives First Remote-Handled Waste Shipment From Sandia Labs ... (RH-TRU) waste shipments from Sandia National Laboratories (SNL) in Albuquerque. ...

  11. High-Efficiency Receivers for Supercritical Carbon Dioxide Cycles

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

    Brayton Energy's supercritical carbon dioxide (s-CO 2 ) solar receiver has the potential to significantly improve reliability, increase efficiency, and reduce costs of CSP systems. ...

  12. Six regional businesses receive Native American Venture Acceleration...

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

    Six regional businesses receive Native American Venture Acceleration Fund grants Grant ... Grant recipients are: Walatowa Timber, Jemez Pueblo: to develop business and manufacturing ...

  13. Comments Received on Proposed Rulemaking for regulation implementing...

    Office of Environmental Management (EM)

    for regulation implementing section 216(h): Coordination of Federal Transmission Permitting on Federal Lands Comments Received on Proposed Rulemaking for regulation ...

  14. Young Physicist from Syracuse University Receives Jefferson Lab...

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

    Physicist from Syracuse University Receives Jefferson Lab's 2014 Thesis Prize Beminiwattha Rakitha Beminiwattha NEWPORT NEWS, VA, June 6, 2014 - A young researcher, who worked on...

  15. WIPP - Freedom of Information Act (FOIA) Requests Received and...

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

    Requests Received and Estimated Completion Dates Requesters who have submitted Freedom of Information (FOIA) requests to the Carlsbad Field Office on or after December 31, 2008,...

  16. Receiver Operating Characteristic (ROC) Curves: An Analysis Tool...

    Office of Scientific and Technical Information (OSTI)

    for Detection Performance Citation Details In-Document Search Title: Receiver Operating Characteristic (ROC) Curves: An Analysis Tool for Detection Performance You are ...

  17. ORISE: ORAU receives DOE Small Business Award for work under...

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

    Rebecca Crowe, Small Business advocate; both with ORAU, receiving the Facility Management Contractor Small Business Achievement of the Year Award for fiscal year 2013...

  18. NREL Receives Editors' Choice Awards for Supercomputer Research...

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

    of the Computational Science Center at NREL. NREL's Beckham Receives Two Awards for Cellulose Research Beckham also won two additional awards: the AIChE Computational Science and...

  19. DOE Receives Responses on the Implementation of Large-Capacity...

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

    establishing alternative test procedures for existing large-capacity residential clothes washer models and units. We received responses from several parties, which can be...

  20. LLNL scientist receives NNSA award for developing uncrackable...

    National Nuclear Security Administration (NNSA)

    LLNL scientist receives NNSA award for developing uncrackable code for nuclear weapons Mark Hart, a scientist and engineer in Lawrence Livermore National Laboratory's Defense ...

  1. Col. Kabban receives NNSA Defense Programs Excellence Award ...

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

    Excellence Award Col. Kabban receives NNSA Defense Programs Excellence Award Brig. Gen. Jim Dawkins, NNSA's Principal Assistant Deputy Administrator for Military Application,...

  2. Sandian Receives the Illuminating Engineering Society of North...

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

    Energy Frontier Research Centers: Solid-State Lighting Science Center for Frontiers of ... Research & Capabilities, Solid-State LightingSandian Receives the Illuminating ...

  3. Waltzer Receives NNSA Gold Medal Award | National Nuclear Security...

    National Nuclear Security Administration (NNSA)

    Gold Medal Award June 26, 2014 AMARILLO, Texas--Karl Waltzer, Acting Deputy Manager of the National Nuclear Security Administration's Production Office, has received the NNSA Gold ...

  4. Nevada National Security Site contractor receives safety recertificati...

    National Nuclear Security Administration (NNSA)

    Nevada National Security Site contractor receives safety recertification for 5th straight ... and operating contractor for the Nevada National Security Site, continues to ...

  5. U.S. Senator Heinrich receives Lab briefing

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

    a variety of topics with Director Charlie McMillan. Heinrich, who has a background in environmental and science issues, received briefings on the Lab's science, technology and...

  6. Lynden Archer receives chemical engineering award > EMC2 News...

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

    Lynden Archer receives chemical engineering award August 6th, 2014 Lynden Archer, the William C. Hooey Director and Professor of Chemical and Biomolecular Engineering, has...

  7. Charles E. Messick receives the Administrator's Gold Award |...

    National Nuclear Security Administration (NNSA)

    E. Messick receives the Administrator's Gold Award | National Nuclear Security Administration Facebook Twitter Youtube Flickr RSS People Mission Managing the Stockpile Preventing...

  8. New CREW Database Receives First Set of Data

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

    CREW Database Receives First Set of Data - Sandia Energy Energy Search Icon Sandia Home ... Stationary Power Energy Conversion Efficiency Solar Energy Wind Energy Water Power ...

  9. Sandia Energy - Sandian's Receive Hydrogen and Fuel Cell Program...

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

    Sandian's Receive Hydrogen and Fuel Cell Program Achievement Award Home Infrastructure Security Energy Transportation Energy Facilities News News & Events Research & Capabilities...

  10. Alaska Native Communities Receive Technical Assistance for Local...

    Office of Environmental Management (EM)

    Alaska Native Communities Receive Technical Assistance for Local Clean Energy Development Alaska Native ... the Strategic Technical Assistance Response Team (START) program. ...

  11. NNSA project receives DOE Secretary's Award for Project Management...

    National Nuclear Security Administration (NNSA)

    receives DOE Secretary's Award for Project Management Improvement Monday, April 13, 2015 - 3:28pm The NNSA Nuclear Materials Safeguards and Security Upgrade Project (NMSSUP) ...

  12. Four New Mexico companies to receive Venture Acceleration Fund

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

    Latest Issue:April 2016 all issues All Issues submit Four New Mexico companies to receive ... IR Dynamics, Santa Fe (A manufacturer of thermally dynamic solar gain technology. ...

  13. Waste receiving and processing facility module 1 auditable safetyanalysis

    SciTech Connect (OSTI)

    Bottenus, R.J.

    1997-02-01

    The Waste Receiving and Processing Facility Module 1 Auditable Safety Analysis analyzes postulated accidents and determines controls to prevent the accidents or mitigate the consequences.

  14. EM’s Huizenga Receives Presidential Rank Award

    Broader source: Energy.gov [DOE]

    WASHINGTON, D.C. – EM Senior Advisor Dave Huizenga recently received the nation’s highest civil service recognition, the Presidential Rank of Distinguished Executive award.

  15. STUDENTS WHO RECEIVED GRADUATE DEGREES FROM THESIS WORK CONDUCTED...

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

    2 STUDENTS WHO RECEIVED GRADUATE DEGREES FROM THESIS WORK CONDUCTED AT THE CYCLOTRON INSTITUTE April 1, 2010 - March 31, 2011 Name Year Thesis Title Advisor Present Position Zach...

  16. NREL: Concentrating Solar Power Research - Receiver R&D

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

    power conversion systems must operate at high temperatures without depending on water and fluids. And advanced receivers will need to be developed to integrate with these...

  17. Sandia National Laboratories: Sandia Receives Award for Electronics...

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

    Laboratories has received an award for reducing the environmental impacts of the computers, printers and other office electronics it uses through its fiscal year 2010...

  18. Sixty-five New Mexico students receive Los Alamos Employees'...

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

    Los Alamos Employees' Scholarship Fund recipients Sixty-five New Mexico students receive Los Alamos Employees' Scholarship Fund scholarships Los Alamos High School senior Scott...

  19. Fifty-five New Mexico students receive Los Alamos Employees'...

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

    Employees' Scholarship Fund scholarships Fifty-five New Mexico students receive Los Alamos Employees' Scholarship Fund scholarships Escalante High School senior Estevan Trujillo is...

  20. Energy Department Receives Prestigious Closing the Circle Awards...

    Office of Environmental Management (EM)

    this week received four White House Closing the Circle (CTC) awards, which recognize federal leadership in green purchasing, electronics recycling, and energy efficiency practices. ...

  1. WIPP Receives Green Zia Award for Environmental Excellence |...

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

    Green Zia Award for Environmental Excellence WIPP Receives Green Zia Award for ... Plant (WIPP), the U.S. Department of Energy (DOE) facility known as the nation's only ...

  2. Optical data latch

    DOE Patents [OSTI]

    Vawter, G. Allen

    2010-08-31

    An optical data latch is formed on a substrate from a pair of optical logic gates in a cross-coupled arrangement in which optical waveguides are used to couple an output of each gate to an photodetector input of the other gate. This provides an optical bi-stability which can be used to store a bit of optical information in the latch. Each optical logic gate, which can be an optical NOT gate (i.e. an optical inverter) or an optical NOR gate, includes a waveguide photodetector electrically connected in series with a waveguide electroabsorption modulator. The optical data latch can be formed on a III-V compound semiconductor substrate (e.g. an InP or GaAs substrate) from III-V compound semiconductor layers. A number of optical data latches can be cascaded to form a clocked optical data shift register.

  3. Polarization-independent optical wavelength filter for channel dropping applications

    DOE Patents [OSTI]

    Deri, Robert J.; Patterson, Frank

    1996-01-01

    The polarization dependence of optical wavelength filters is eliminated by using waveguide directional couplers. Material birefringence is used to compensate for the waveguide (electromagnetic) birefringence which is the original cause of the polarization dependence. Material birefringence is introduced in a controllable fashion by replacing bulk waveguide layers by finely layered composites, such as multiple quantum wells using III-V semiconductor materials. The filter has use in wavelength-division-multiplexed fiber optic communication systems. This filter has broad application for wavelength-tunable receivers in fiber optic communication links, which may be used for telecommunications, optical computer interconnect links, or fiber optic sensor systems. Since multiple-wavelength systems are increasingly being used for all of these applications, the filter is useable whenever a rapidly tunable, wavelength-filtering receiver is required.

  4. Polarization-independent optical wavelength filter for channel dropping applications

    DOE Patents [OSTI]

    Deri, R.J.; Patterson, F.

    1996-05-07

    The polarization dependence of optical wavelength filters is eliminated by using waveguide directional couplers. Material birefringence is used to compensate for the waveguide (electromagnetic) birefringence which is the original cause of the polarization dependence. Material birefringence is introduced in a controllable fashion by replacing bulk waveguide layers by finely layered composites, such as multiple quantum wells using III-V semiconductor materials. The filter has use in wavelength-division multiplexed fiber optic communication systems. This filter has broad application for wavelength-tunable receivers in fiber optic communication links, which may be used for telecommunications, optical computer interconnect links, or fiber optic sensor systems. Since multiple-wavelength systems are increasingly being used for all of these applications, the filter is useable whenever a rapidly tunable, wavelength-filtering receiver is required. 14 figs.

  5. Optical absorption measurement system

    DOE Patents [OSTI]

    Draggoo, Vaughn G.; Morton, Richard G.; Sawicki, Richard H.; Bissinger, Horst D.

    1989-01-01

    The system of the present invention contemplates a non-intrusive method for measuring the temperature rise of optical elements under high laser power optical loading to determine the absorption coefficient. The method comprises irradiating the optical element with a high average power laser beam, viewing the optical element with an infrared camera to determine the temperature across the optical element and calculating the absorption of the optical element from the temperature.

  6. Fiber optical assembly for fluorescence spectrometry

    DOE Patents [OSTI]

    Carpenter, II, Robert W.; Rubenstein, Richard; Piltch, Martin; Gray, Perry

    2010-12-07

    A system for analyzing a sample for the presence of an analyte in a sample. The system includes a sample holder for containing the sample; an excitation source, such as a laser, and at least one linear array radially disposed about the sample holder. Radiation from the excitation source is directed to the sample, and the radiation induces fluorescent light in the sample. Each linear array includes a plurality of fused silica optical fibers that receive the fluorescent light and transmits a fluorescent light signal from the first end to an optical end port of the linear array. An end port assembly having a photo-detector is optically coupled to the optical end port. The photo-detector detects the fluorescent light signal and converts the fluorescent light signal into an electrical signal.

  7. Advanced Optical Technologies

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

    The Advanced Optical Components and Technologies program develops, creates and provides critical optical components for laser-based missions at LLNL. Past projects focused on ...

  8. Optical extensometer

    DOE Patents [OSTI]

    Walker, Ray A.; Reich, Fred R.; Russell, James T.

    1978-01-01

    An optical extensometer is described using sequentially pulsed light beams for measuring the dimensions of objects by detecting two opposite edges of the object without contacting the object. The light beams may be of different distinguishable light characteristics, such as polarization or wave length, and are time modulated in an alternating manner at a reference frequency. The light characteristics are of substantially the same total light energy and are distributed symmetrically. In the preferred embodiment two light beam segments of one characteristic are on opposite sides of a middle segment of another characteristic. As a result, when the beam segments are scanned sequentially across two opposite edges of the object, they produce a readout signal at the output of a photoelectric detector that is compared with the reference signal by a phase comparator to produce a measurement signal with a binary level transition when the light beams cross an edge. The light beams may be of different cross sectional geometries, including two superimposed and concentric circular beam cross sections of different diameter, or two rectangular cross sections which intersect with each other substantially perpendicular so only their central portions are superimposed. Alternately, a row of three light beams can be used including two outer beams on opposite sides and separate from a middle beam. The three beams may all be of the same light characteristic. However it is preferable that the middle beam be of a different characteristic but of the same total energy as the two outer beams.

  9. A first-principles study of cementite (Fe{sub 3}C) and its alloyed counterparts: Elastic constants, elastic anisotropies, and isotropic elastic moduli

    SciTech Connect (OSTI)

    Ghosh, G.

    2015-08-15

    A comprehensive computational study of elastic properties of cementite (Fe{sub 3}C) and its alloyed counterparts (M{sub 3}C (M = Al, Co, Cr, Cu, Fe, Hf, Mn, Mo, Nb, Ni, Si, Ta, Ti, V, W, Zr, Cr{sub 2}FeC and CrFe{sub 2}C) having the crystal structure of Fe{sub 3}C is carried out employing electronic density-functional theory (DFT), all-electron PAW pseudopotentials and the generalized gradient approximation for the exchange-correlation energy (GGA). Specifically, as a part of our systematic study of cohesive properties of solids and in the spirit of materials genome, following properties are calculated: (i) single-crystal elastic constants, C{sub ij}, of above M{sub 3}Cs; (ii) anisotropies of bulk, Young’s and shear moduli, and Poisson’s ratio based on calculated C{sub ij}s, demonstrating their extreme anisotropies; (iii) isotropic (polycrystalline) elastic moduli (bulk, shear, Young’s moduli and Poisson’s ratio) of M{sub 3}Cs by homogenization of calculated C{sub ij}s; and (iv) acoustic Debye temperature, θ{sub D}, of M{sub 3}Cs based on calculated C{sub ij}s. We provide a critical appraisal of available data of polycrystalline elastic properties of alloyed cementite. Calculated single crystal properties may be incorporated in anisotropic constitutive models to develop and test microstructure-processing-property-performance links in multi-phase materials where cementite is a constituent phase.

  10. Ionic radius of (CF{sub 3}SO{sub 2}){sub 3}C{sup {minus}} and applicability of Stokes law to its propylene carbonate solution

    SciTech Connect (OSTI)

    Ue, Makoto

    1996-11-01

    The ionic radius of (Cf{sub 3}SO{sub 2}){sub 3}C{+-}{sup {minus}} was calculated to be 0.375 nm from its van der Waals volume, which was obtained by molecular mechanics calculations with the aid of its crystallographic data. This radius was correlated with its single ion limiting molar conductivity in propylene carbonate at 25 C, and it was proven that this anion also nearly followed the behavior of perfect slip in Stokes law, as is observed for other popular anions for lithium battery applications.

  11. WIPP Receives First Shipment | National Nuclear Security Administration |

    National Nuclear Security Administration (NNSA)

    (NNSA) WIPP Receives First Shipment WIPP Receives First Shipment Carlsbad, NM After more than two decades of political, legal, and bureaucratic delays, the first truckload of radioactive waste from Los Alamos National Laboratory arrives at the DOE Waste Isolation Pilot Plant (WIPP) in southeastern New Mexico, 26 miles east of Carlsbad

  12. Previous Fiscal Year FOIA Requests received by Golden Field Office

    Broader source: Energy.gov [DOE]

    Golden Field Office Status of FOIA Requests Received – Previous Fiscal Year, from the U.S. Department of Energy This document provides a listing of all FOIA requests received by the Golden Field Office in the past fiscal year, including a description of the FOIA request and the resolution of the FOIA request.

  13. Optical NAND gate

    DOE Patents [OSTI]

    Skogen, Erik J.; Raring, James; Tauke-Pedretti, Anna

    2011-08-09

    An optical NAND gate is formed from two pair of optical waveguide devices on a substrate, with each pair of the optical waveguide devices consisting of an electroabsorption modulator and a photodetector. One pair of the optical waveguide devices is electrically connected in parallel to operate as an optical AND gate; and the other pair of the optical waveguide devices is connected in series to operate as an optical NOT gate (i.e. an optical inverter). The optical NAND gate utilizes two digital optical inputs and a continuous light input to provide a NAND function output. The optical NAND gate can be formed from III-V compound semiconductor layers which are epitaxially deposited on a III-V compound semiconductor substrate, and operates at a wavelength in the range of 0.8-2.0 .mu.m.

  14. Sensible heat transfer receiver for solar dynamic space power system

    SciTech Connect (OSTI)

    Perez-davis, M.E.; Gaier, J.R.; Petrefski, C.

    1991-01-01

    A sensible heat receiver considered in this study uses a vapor grown carbon fiber-carbon (VGCF/C) composite as the thermal storage media and was designed for a 7 kW Brayton engine. The proposed heat receiver stores the required energy to power the system during eclipse in the VGCF/C composite. The heat receiver thermal analysis was conducted through the Systems Improved Numerical Differencing Analyzer and Fluid Integrator (SINDA) software package. The sensible heat receiver compares well with other latent and advanced sensible heat receivers analyzed in other studies while avoiding the problems associated with latent heat storage salts and liquid metal heat pipes. The concept also satisfies the design requirements for a 7 kW Brayton engine system. The weight and size of the system can be optimized by changes in geometry and technology advances for this new material.

  15. Hybrid sodium heat pipe receivers for dish/Stirling systems

    SciTech Connect (OSTI)

    Laing, D.; Reusch, M.

    1997-12-31

    The design of a hybrid solar/gas heat pipe receiver for the SBP 9 kW dish/Stirling system using a United Stirling AB V160 Stirling engine and the results of on-sun testing in alternative and parallel mode will be reported. The receiver is designed to transfer a thermal power of 35 kW. The heat pipe operates at around 800 C, working fluid is sodium. Operational options are solar-only, gas augmented and gas-only mode. Also the design of a second generation hybrid heat pipe receiver currently developed under a EU-funded project, based on the experience gained with the first hybrid receiver, will be reported. This receiver is designed for the improved SPB/L. and C.-10 kW dish/Stirling system with the reworked SOLO V161 Stirling engine.

  16. Electro-optic component mounting device

    DOE Patents [OSTI]

    Gruchalla, M.E.

    1994-09-13

    A technique is provided for integrally mounting a device such as an electro-optic device in a transmission line to avoid series resonant effects. A center conductor of the transmission line has an aperture formed therein for receiving the device. The aperture splits the center conductor into two parallel sections on opposite sides of the device. For a waveguide application, the center conductor is surrounded by a conductive ground surface which is spaced apart from the center conductor with a dielectric material. One set of electrodes formed on the surface of the electro-optic device is directly connected to the center conductor and an electrode formed on the surface of the electro-optic device is directly connected to the conductive ground surface. The electrodes formed on the surface of the electro-optic device are formed on curved sections of the surface of the device to mate with correspondingly shaped electrodes on the conductor and ground surface to provide a uniform electric field across the electro-optic device. The center conductor includes a passage formed therein for passage of optical signals to an electro-optic device. 10 figs.

  17. Electro-optic component mounting device

    DOE Patents [OSTI]

    Gruchalla, Michael E.

    1994-01-01

    A technique is provided for integrally mounting a device such as an electro-optic device (50) in a transmission line to avoid series resonant effects. A center conductor (52) of the transmission line has an aperture (58) formed therein for receiving the device (50). The aperture (58) splits the center conductor into two parallel sections on opposite sides of the device. For a waveguide application, the center conductor is surrounded by a conductive ground surface (54), which is spaced apart from the center conductor with a dielectric material (56). One set of electrodes formed on the surface of the electro-optic device (50) is directly connected to the center conductor 52 and an electrode formed on the surface of the electro-optic device is directly connected to the conductive ground surface (54). The electrodes formed on the surface of the electro-optic device are formed on curved sections of the surface of the device to mate with correspondingly shaped electrodes on the conductor and ground surface to provide a uniform electric field across the electro-optic device. The center conductor includes a passage ( 60) formed therein for passage of optical signals to an electro-optic device.

  18. Optically isolated signal coupler with linear response

    DOE Patents [OSTI]

    Kronberg, James W.

    1994-01-01

    An optocoupler for isolating electrical signals that translates an electrical input signal linearly to an electrical output signal. The optocoupler comprises a light emitter, a light receiver, and a light transmitting medium. The light emitter, preferably a blue, silicon carbide LED, is of the type that provides linear, electro-optical conversion of electrical signals within a narrow wavelength range. Correspondingly, the light receiver, which converts light signals to electrical signals and is preferably a cadmium sulfide photoconductor, is linearly responsive to light signals within substantially the same wavelength range as the blue LED.

  19. A Chandrasekhar mass progenitor for the Type Ia supernova remnant 3C 397 from the enhanced abundances of nickel and manganese

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

    Yamaguchi, Hiroya; Badenes, Carles; Foster, Adam R.; Bravo, Eduardo; Williams, Brian J.; Maeda, Keiichi; Nobukawa, Masayoshi; Eriksen, Kristoffer A.; Brickhouse, Nancy S.; Petre, Robert; et al

    2015-03-12

    Despite decades of intense efforts, many fundamental aspects of Type Ia supernovae (SNe Ia) remain elusive. One of the major open questions is whether the mass of an exploding white dwarf (WD) is close to the Chandrasekhar limit. Here, we report the detection of strong K-shell emission from stable Fe-peak elements in the Suzaku X-ray spectrum of the Type Ia supernova remnant (SNR) 3C 397. The high Ni/Fe and Mn/Fe mass ratios (0.11–0.24 and 0.018–0.033, respectively) in the hot plasma component that dominates the K-shell emission lines indicate a degree of neutronization in the supernova ejecta that can only bemore » achieved by electron capture in the dense cores of exploding WDs with a near-Chandrasekhar mass. This suggests a single-degenerate origin for 3C 397, since Chandrasekhar mass progenitors are expected naturally if the WD accretes mass slowly from a companion. Altogether with other results supporting the double-degenerate scenario, our work adds to the mounting evidence that both progenitor channels make a significant contribution to the SN Ia rate in star-forming galaxies.« less

  20. A Chandrasekhar mass progenitor for the Type Ia supernova remnant 3C 397 from the enhanced abundances of nickel and manganese

    SciTech Connect (OSTI)

    Yamaguchi, Hiroya; Badenes, Carles; Foster, Adam R.; Bravo, Eduardo; Williams, Brian J.; Maeda, Keiichi; Nobukawa, Masayoshi; Eriksen, Kristoffer A.; Brickhouse, Nancy S.; Petre, Robert; Koyama, Katsuji

    2015-03-12

    Despite decades of intense efforts, many fundamental aspects of Type Ia supernovae (SNe Ia) remain elusive. One of the major open questions is whether the mass of an exploding white dwarf (WD) is close to the Chandrasekhar limit. Here, we report the detection of strong K-shell emission from stable Fe-peak elements in the Suzaku X-ray spectrum of the Type Ia supernova remnant (SNR) 3C 397. The high Ni/Fe and Mn/Fe mass ratios (0.11–0.24 and 0.018–0.033, respectively) in the hot plasma component that dominates the K-shell emission lines indicate a degree of neutronization in the supernova ejecta that can only be achieved by electron capture in the dense cores of exploding WDs with a near-Chandrasekhar mass. This suggests a single-degenerate origin for 3C 397, since Chandrasekhar mass progenitors are expected naturally if the WD accretes mass slowly from a companion. Altogether with other results supporting the double-degenerate scenario, our work adds to the mounting evidence that both progenitor channels make a significant contribution to the SN Ia rate in star-forming galaxies.

  1. SPIE Optics + Photonics 2011

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

    SPIE Optics + Photonics 2011 August 21-25, 2011 San Diego Convention Center San Diego

  2. Optical XOR gate

    DOE Patents [OSTI]

    Vawter, G. Allen

    2013-11-12

    An optical XOR gate is formed as a photonic integrated circuit (PIC) from two sets of optical waveguide devices on a substrate, with each set of the optical waveguide devices including an electroabsorption modulator electrically connected in series with a waveguide photodetector. The optical XOR gate utilizes two digital optical inputs to generate an XOR function digital optical output. The optical XOR gate can be formed from III-V compound semiconductor layers which are epitaxially deposited on a III-V compound semiconductor substrate, and operates at a wavelength in the range of 0.8-2.0 .mu.m.

  3. Optical NOR gate

    DOE Patents [OSTI]

    Skogen, Erik J.; Tauke-Pedretti, Anna

    2011-09-06

    An optical NOR gate is formed from two pair of optical waveguide devices on a substrate, with each pair of the optical waveguide devices consisting of an electroabsorption modulator electrically connected in series with a waveguide photodetector. The optical NOR gate utilizes two digital optical inputs and a continuous light input to provide a NOR function digital optical output. The optical NOR gate can be formed from III-V compound semiconductor layers which are epitaxially deposited on a III-V compound semiconductor substrate, and operates at a wavelength in the range of 0.8-2.0 .mu.m.

  4. Westinghouse receives high marks for management, operation of WIPP

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

    Receives High Marks For Management, Operation of WIPP CARLSBAD, N.M., January 11, 2000 - The Westinghouse Waste Isolation Division (WID) received high marks from the U.S. Department of Energy (DOE) for its management and operation of the Waste Isolation Pilot Plant (WIPP) in fiscal year 1999. For the 12-month performance evaluation period from October 1, 1998 through September 30, 1999, Westinghouse received 94.9 of a possible 100 points. The DOE considers a score of 86 to 95 as good. A score

  5. Y-12 inventors receive awards | Y-12 National Security Complex

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

    inventors receive ... Y-12 inventors receive awards Posted: February 20, 2013 - 10:31am OAK RIDGE, Tenn. - At the ninth annual Y-12 Technology Transfer awards ceremony held to celebrate fiscal year 2012 achievements, 12 individuals were recognized for receiving U.S. Patent and Trademark Office patents and 74 were honored for submitting invention disclosures. The year was a record-breaking one for new patents at Y-12, with 11 awarded. The Silver Acorn Award, bestowed upon first-time patent

  6. Project Profile: High Temperature Heat Pipe Receiver for Parabolic Trough

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

    Collectors (SuNLaMP) | Department of Energy High Temperature Heat Pipe Receiver for Parabolic Trough Collectors (SuNLaMP) Project Profile: High Temperature Heat Pipe Receiver for Parabolic Trough Collectors (SuNLaMP) Funding Program: SuNLaMP SunShot Subprogram: CSP Location: Los Alamos National Laboratory, Los Alamos, NM SunShot Award Amount: $3,000,000 This project, done in partnership with Norwich Technologies, focuses on the development of heat pipe receiver technology for use with

  7. High-Efficiency Receivers for Supercritical Carbon Dioxide Cycles |

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

    Department of Energy High-Efficiency Receivers for Supercritical Carbon Dioxide Cycles High-Efficiency Receivers for Supercritical Carbon Dioxide Cycles This fact sheet describes a project awarded under the DOE's 2012 SunShot Concentrating Solar Power R&D award program. The team, led by Brayton Energy, aims to develop and demonstrate a low-cost, high-efficiency solar receiver that is compatible with s-CO2 cycles and modern thermal storage subsystems. Supercritical CO2 Brayton-cycle

  8. Elastic relaxations associated with the Pm3m-R3c transition in LaA103 III: superattenuation of acoustic resonances

    SciTech Connect (OSTI)

    Darling, Timothy W; Carpenter, M A; Buckley, A; Taylor, P A; Mcknight, R E A

    2009-01-01

    Resonant Ultrasound Spectroscopy has been used to characterize elastic softening and a variety of new acoustic dissipation processes associated with the Pm{bar 3}m {leftrightarrow} R{bar 3}c transition in single crystal and ceramic samples of LaAlO{sub 3}. Softening of the cubic structure ahead of the transition point is not accompanied by an increase in dissipation but follows different temperature dependences for the bulk modulus, 1/3(C{sub 11} + 2C{sub 12}), and the shear components 1/2(C{sub 11}-C{sub 12}) and C{sub 44} as if the tilting instability contains two slightly different critical temperatures. The transition itself is marked by the complete disappearance of resonance peaks (superattenuation), which then reappear below {approx}700 K in spectra from single crystals. Comparison with low frequency, high stress data from the literature indicate that the dissipation is not due to macroscopic displacement of needle twins. An alternative mechanism, local bowing of twin walls under low dynamic stress, is proposed. Pinning of the walls with respect to this displacement process occurs below {approx}350 K. Anelasticity maps, analogous to plastic deformation mechanism maps, are proposed to display dispersion relations and temperature/frequency/stress fields for different twin wall related dissipation mechanisms. An additional dissipation process, with an activation energy of 43 {+-} 6 kJ.mole{sup -1}, occurs in the vicinity of 250 K. The mechanism for this is not known, but it is associated with C{sub 44} and therefore appears to be related in some way to the cubic {leftrightarrow} rhombohedral transition at {approx}817 K. Slight softening in the temperature interval {approx}220 {yields} 70 K of resonance peaks determined by shear elastic constants hints at an incipient E{sub g} ferroelastic instability in LaAlO{sub 3}. The softening interval ends with a further dissipation peak at {approx} 60 K, the origin of which is discussed in terms of freezing of atomic

  9. High-Flux Microchannel Solar Receiver (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2012-09-01

    Oregon State University is one of the 2012 SunShot CSP R&D awardees for their advanced receivers. This fact sheet explains the motivation, description, and impact of the project.

  10. Particle Receiver Integrated with Fluidized Bed (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2012-09-01

    National Renewable Energy Laboratory is one of the 2012 SunShot CSP R&D awardees for their advanced receivers. This fact sheet explains the motivation, description, and impact of the project.

  11. High-Efficiency Receivers for Supercritical Carbon Dioxide Cycles...

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

    2012. progressreportsunshotbraytonfy12q4.pdf More Documents & Publications High-Efficiency Low-Cost Solar Receiver for Use in a Supercritical CO2 Recompression Cycle - FY13 Q1...

  12. Administering truncated receive functions in a parallel messaging interface

    DOE Patents [OSTI]

    Archer, Charles J; Blocksome, Michael A; Ratterman, Joseph D; Smith, Brian E

    2014-12-09

    Administering truncated receive functions in a parallel messaging interface (`PMI`) of a parallel computer comprising a plurality of compute nodes coupled for data communications through the PMI and through a data communications network, including: sending, through the PMI on a source compute node, a quantity of data from the source compute node to a destination compute node; specifying, by an application on the destination compute node, a portion of the quantity of data to be received by the application on the destination compute node and a portion of the quantity of data to be discarded; receiving, by the PMI on the destination compute node, all of the quantity of data; providing, by the PMI on the destination compute node to the application on the destination compute node, only the portion of the quantity of data to be received by the application; and discarding, by the PMI on the destination compute node, the portion of the quantity of data to be discarded.

  13. ORISE: CDC Travelers' Health Team Receives Innovation Award for...

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

    CDC Travelers' Health Team Receives Innovation Award for Website Redesign ORISE serves as lead redesign contractor on award-winning website redesign for the CDC How ORISE is Making...

  14. Two PPPL physicists elected to receive prestigious honor | Princeton...

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

    Two PPPL physicists elected to receive prestigious honor By Jeanne Jackson DeVoe October 17, 2013 Tweet Widget Google Plus One Share on Facebook David Gates was one of two PPPL...

  15. WIPP Security Contractor Receives DOE Voluntary Protection Program Award

    Broader source: Energy.gov [DOE]

    CARLSBAD, N.M.– Security Walls, LLC, the security contractor for the U.S. Department of Energy’s (DOE) Waste Isolation Pilot Plant (WIPP), recently received the DOE Voluntary Protection Program (VPP) Legacy Star award.

  16. Long Term Applications Received by DOE/FE to Export

    Energy Savers [EERE]

    Term Applications Received by DOEFE to Export Domestically Produced LNG from the Lower-48 States (as of March 18, 2016) All Changes Since February 23, 2016 Update Are In Red 1 ...

  17. AEETES---A solar reflux receiver thermal performance numerical model

    SciTech Connect (OSTI)

    Hogan, R.E. Jr.

    1991-01-01

    Reflux solar receivers for dish-Stirling electric power generation systems are currently being investigated by several companies and laboratories. In support of these efforts, the AEETES thermal performance numerical model has been developed to predict thermal performance of pool-boiler and heat-pipe reflux receivers. The formulation of the AEETES numerical model, which is applicable to axisymmetric geometries with asymmetric incident fluxes, is presented in detail. Thermal efficiency predictions agree to within 4.1% with test data from on-sun tests of a pool-boiler reflux receiver. Predicted absorber and sidewall temperatures agree with thermocouple data to within 3.3.% and 7.3%, respectively. The importance of accounting for the asymmetric incident fluxes is demonstrated in comparisons with predictions using azimuthally averaged variables. The predicted receiver heat losses are characterized in terms of convective, solar and infrared radiative, and conductive heat transfer mechanisms. 27 refs., 9 figs., 4 tabs.

  18. Project Profile: High-Temperature Falling-Particle Receiver ...

    Office of Environmental Management (EM)

    under the 2012 Concentrating Solar Power (CSP) SunShot R&D funding opportunity announcement (FOA). Approach This project seeks to advance falling-particle receivers by passing ...

  19. Project Profile: High-Efficiency Receivers for Supercritical...

    Energy Savers [EERE]

    Brayton logo --This project is inactive -- Brayton Energy, under the 2012 SunShot Concentrating Solar Power (CSP) R&D FOA, is building and testing a new solar receiver that uses ...

  20. Moving receive beam method and apparatus for synthetic aperture radar

    DOE Patents [OSTI]

    Kare, Jordin T.

    2001-01-01

    A method and apparatus for improving the performance of Synthetic Aperture Radar (SAR) systems by reducing the effect of "edge losses" associated with nonuniform receiver antenna gain. By moving the receiver antenna pattern in synchrony with the apparent motion of the transmitted pulse along the ground, the maximum available receiver antenna gain can be used at all times. Also, the receiver antenna gain for range-ambiguous return signals may be reduced, in some cases, by a large factor. The beam motion can be implemented by real-time adjustment of phase shifters in an electronically-steered phased-array antenna or by electronic switching of feed horns in a reflector antenna system.

  1. Advanced Low-Cost Receivers for Parabolic Troughs (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2012-09-01

    Norwich Technologies is one of the 2012 SunShot CSP R&D awardees for their advanced receivers. This fact sheet explains the motivation, description, and impact of the project.

  2. High-Temperature Falling-Particle Receiver (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2012-09-01

    Sandia National Laboratories is one of the 2012 SunShot CSP R&D awardee for their advanced receivers. This fact sheet explains the motivation, description, and impact of the project.

  3. Department of Energy Receives 2013 Partners in Conservation Award

    Broader source: Energy.gov [DOE]

    The U.S. Department of Energy (DOE), along with its partners the Bureau of Ocean Energy Management (BOEM) and the National Oceanic and Atmospheric Administration (NOAA), received the Department of Interiors Partners in Conservation Award.

  4. Collector/Receiver Characterization (Fact Sheet), Thermal Systems...

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

    ... loss on both the cost of electric- ity and amount of ... LLC NRELFS-550-48659 * August 2010 solar power systems. ... of both point-focus and line-focus optical concentrators. ...

  5. Sandia National Laboratories: Sandia Receives Award for Electronics

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

    Stewardship Sandia Receives Award for Electronics Stewardship September 19, 2011 electronics stewardship award ALBUQUERQUE, N.M. - Sandia National Laboratories has received an award for reducing the environmental impacts of the computers, printers and other office electronics it uses through its fiscal year 2010 electronics stewardship activities. The U.S. Environmental Protection Agency (EPA) and the Office of the Federal Environmental Executive, which jointly manage the Federal Electronics

  6. NMSU Undergrad Receives JSA Research Assistantship | Jefferson Lab

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

    NMSU Undergrad Receives JSA Research Assistantship Waverly Gorman Waverly Gorman (right), a New Mexico State University junior, is the latest recipient of the JSA Minority/Female Undergraduate Research Assistantship. Here, Gorman reviews her project with her advisor and NMSU Physics Professor, Matthias Burkardt. NMSU Undergrad Tackles 3D Particle Scattering Animations After Receiving JSA Research Assistantship Waverly Gorman didn't always want to study physics. She began her college career as a

  7. Five Los Alamos scientists receive 2015 Fellows Prize

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

    Five Los Alamos scientists receive 2015 Fellows Prize Five Los Alamos scientists receive 2015 Fellows Prize Hou-Tong Chen, Manvendra Dubey and Herbert Van De Sompel are the winners of the 2015 Fellows Prize for Outstanding Research; Rebecca Chamberlin and David Morris are the winners of the Fellows Prize for Outstanding Leadership. February 11, 2016 Fellows prize recipients from top left: Herbert Van De Sompel, Dave Morris, Rebecca Chamberlin. From bottom left: Manvendra Dubey and Houtong Chen.

  8. Comments Received on the Coordination of Federal Authorizations for

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

    Electric Transmission Facilities Notice of Proposed Rulemaking (NOPR) for the Integrated Interagency Pre-Application (IIP) Process | Department of Energy Received on the Coordination of Federal Authorizations for Electric Transmission Facilities Notice of Proposed Rulemaking (NOPR) for the Integrated Interagency Pre-Application (IIP) Process Comments Received on the Coordination of Federal Authorizations for Electric Transmission Facilities Notice of Proposed Rulemaking (NOPR) for the

  9. Los Alamos National Laboratory receives Presidential Award as a climate

    National Nuclear Security Administration (NNSA)

    champion | National Nuclear Security Administration | (NNSA) National Laboratory receives Presidential Award as a climate champion Wednesday, December 30, 2015 - 12:00am NNSA Blog Los Alamos National Laboratory recently received a second presidential award as a climate champion. From left are: Mathew Moury, Associate Under Secretary for Environment, Health, Safety and Security; Michael Sweitzer, NNSA; Josh Silverman, Director, DOE Office of Sustainability Support; Christy Goldfuss, Director,

  10. Three Offshore Wind Advanced Technology Demonstration Projects Receive

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

    Phase 2 Funding | Department of Energy Offshore Wind Advanced Technology Demonstration Projects Receive Phase 2 Funding Three Offshore Wind Advanced Technology Demonstration Projects Receive Phase 2 Funding September 11, 2014 - 3:16pm Addthis The U.S. Department of Energy (DOE) awarded additional funding to three of the seven projects from the Offshore Wind Advanced Technology Demonstration Funding Opportunity. Dominion Virginia Power, Fishermen's Energy of New Jersey, and Principle Power

  11. Three NNSA researchers receive President's highest early-career STEM

    National Nuclear Security Administration (NNSA)

    award | National Nuclear Security Administration | (NNSA) Three NNSA researchers receive President's highest early-career STEM award Thursday, May 5, 2016 - 10:35am Secretary of Energy Ernest Moniz, left, and NNSA Administrator Frank Klotz, right, join physicist Tammy Ma as she celebrates receiving a PECASE award for her work with the National Ignition Facility. Yesterday Secretary of Energy Ernest Moniz hosted a special ceremony honoring DOE's 13 recipients of the 2016 Presidential Early

  12. NNSA Site Receives Award for Environmental Stewardship | National Nuclear

    National Nuclear Security Administration (NNSA)

    Security Administration | (NNSA) Site Receives Award for Environmental Stewardship April 30, 2009 WASHINGTON, DC - The National Nuclear Security Administration (NNSA) today congratulated its NNSA's Y-12 National Security Complex for receiving a prestigious White House Closing the Circle award, which recognizes federal leadership in environmental sustainability. Y-12 was honored for its innovation on pollution prevention. "I congratulate Y-12 for its continued support in maintaining

  13. Alaska Native Tribes Receive Technical Assistance for Local Clean Energy

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

    Projects | Department of Energy Alaska Native Tribes Receive Technical Assistance for Local Clean Energy Projects Alaska Native Tribes Receive Technical Assistance for Local Clean Energy Projects May 24, 2012 - 5:47pm Addthis News Media Contact (202) 586-4940 WASHINGTON, D.C. - As part of the Obama Administration's commitments to reducing America's reliance on imported oil and protecting our nation's air and water, the U.S. Energy Department and the Denali Commission announced today that

  14. William & Mary Undergrad Receives JSA Research Assistantship | Jefferson

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

    Lab William & Mary Undergrad Receives JSA Research Assistantship William & Mary Undergrad Receives JSA Research Assistantship Alice Perrin, a senior physics major at The College of William and Mary Alice Perrin, a senior physics major at The College of William and Mary is the recipient of the 2014-15 Jefferson Science Associates Minority/Female Undergraduate Research Assistantship (JSA MFURA) at Jefferson Lab. Her assistantship project involves setting up a testing facility to

  15. Lab receives an additional $19 million for environmental cleanup

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

    Lab receives an additional $19 million for environmental cleanup Community Connections: Your link to news and opportunities from Los Alamos National Laboratory Latest Issue: September 1, 2016 all issues All Issues » submit Lab receives an additional $19 million for environmental cleanup Lab also selects local businesses for five-year contracts June 1, 2013 Governor Susana Martinez visited the Lab in May to urge additional funding for cleanup Governor Susana Martinez visited the Lab in May to

  16. Leveraged small business projects will receive free technical assistance

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

    Leveraged small business projects will receive free technical assistance Community Connections: Your link to news and opportunities from Los Alamos National Laboratory Latest Issue: September 1, 2016 all issues All Issues » submit Leveraged small business projects will receive free technical assistance Los Alamos and Sandia announce winners December 1, 2014 NMSBA principal investigator James Barefield from Los Alamos' Chemistry Division is getting ready to use a portable, backpack-mounted

  17. Local Middle School Receives School-to-Career Grant

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

    Middle School Receives School-to-Career Grant For more information contact: e:mail: Public Affairs Golden, Colo., December 24, 1997 - Deer Creek Middle School in Littleton received a $10,000 grant from the Jefferson County School-to-Career Program. The U.S. Department of Energy's National Renewable Energy Laboratory (NREL) assisted the school in writing the grant as an extension of NREL's National Teacher Enhancement Program. The money will be used to help students explore career opportunities

  18. Local youth receive nearly $570K for higher education

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

    Local youth receive nearly $570K for higher education Community Connections: Your link to news and opportunities from Los Alamos National Laboratory Latest Issue: September 1, 2016 all issues All Issues » submit Local youth receive nearly $570K for higher education The Los Alamos Employees' Scholarship Fund honors 95 area students. May 2, 2016 Arasely Rodriguez of Taos High School, Katherine Wang of Los Alamos High School, and Solomon Sindelar of New Mexico Military Institute are the recipients

  19. Los Alamos National Laboratory employees receive Pollution Prevention

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

    Awards Pollution Prevention Awardees Los Alamos National Laboratory employees receive Pollution Prevention Awards Nearly 400 employees on 47 teams received Pollution Prevention awards for protecting the environment and saving taxpayers more than $8 million. April 23, 2013 Molten plutonium in a crucible. The improved processing of old plutonium generates less than half of the waste of the former process. Molten plutonium in a crucible. The improved processing of old plutonium generates less

  20. Strategic Petroleum Reserve Contractor to Receive 2005 Malcolm Baldrige

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

    National Quality Award | Department of Energy Petroleum Reserve Contractor to Receive 2005 Malcolm Baldrige National Quality Award Strategic Petroleum Reserve Contractor to Receive 2005 Malcolm Baldrige National Quality Award November 22, 2005 - 2:51pm Addthis Recognition for Management Performance Excellence and Continuous Improvement to Stakeholders WASHINGTON, DC - Secretary of Energy Samuel Bodman today announced that DynMcDermott Petroleum Operations Company, operator of the nation's

  1. NNSA Employee Receives Service to America Medal | National Nuclear Security

    National Nuclear Security Administration (NNSA)

    Administration | (NNSA) Employee Receives Service to America Medal September 29, 2004 WASHINGTON, D.C. - For the second year in a row, an employee of the National Nuclear Security Administration (NNSA) has earned a prestigious Service to America medal. Nicole Nelson-Jean, an NNSA employee who directs the Department of Energy's (DOE) office in Tokyo, received the award last night for her nonproliferation work in Russia, including leading a delegation of U.S. security specialists and engineers

  2. Two Los Alamos National Laboratory organizations receive Performance

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

    Excellence recognition from Quality New Mexico Performance Excellence recognition Two Los Alamos National Laboratory organizations receive Performance Excellence recognition from Quality New Mexico Nuclear Material Control and Accountability Group and the Quality and Performance Assurance Division received 2014 Performance Excellence Recognition awards from Quality New Mexico March 26, 2015 Los Alamos National Laboratory sits on top of a once-remote mesa in northern New Mexico with the Jemez

  3. Midwest Research Institute Receives Contract Extension to Manage NREL -

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

    News Releases | NREL Midwest Research Institute Receives Contract Extension to Manage NREL February 9, 2004 Golden, Colo. - Midwest Research Institute (MRI) in Kansas City has received a four-year contract extension to manage and operate the U.S. Department of Energy's National Renewable Energy Laboratory (NREL). The NREL contract was last competed in 1998 and this extends MRI's management for the full 10 years. Midwest Research Institute has managed NREL since the Laboratory's founding as

  4. Heat exchange in a multi-cavity volumetric solar receiver

    SciTech Connect (OSTI)

    Carotenuto, A.; Ruocco, G.; Reale, F. )

    1991-01-01

    The concept of a multi-cavity volumetric solar receiver is very attractive for the profitability of certain of its characteristics such as high efficiency and economy. The absorber is based on a pack of small ceramic cavities which intercept and absorb the inherent high solar flux reflected from an array of mirrors. Atmospheric air acts as a coolant medium when it is drawn through the pack. A model for an overall heat transfer performance of the receiver is given and numerically solved.

  5. Public Comments Received on the Draft Voluntary Code of Conduct |

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

    Department of Energy Received on the Draft Voluntary Code of Conduct Public Comments Received on the Draft Voluntary Code of Conduct OE and the Federal Smart Grid Task Force facilitated a multi-stakeholder process to develop a Voluntary Code of Conduct (VCC) for utilities and third parties providing consumer energy use services that will address privacy related to data enabled by smart grid technologies. Industry stakeholders attended open meetings and participated in work group activities

  6. DOE Announces First Companies to Receive Industrial Energy Efficiency

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

    Certification | Department of Energy First Companies to Receive Industrial Energy Efficiency Certification DOE Announces First Companies to Receive Industrial Energy Efficiency Certification December 9, 2010 - 12:00am Addthis WASHINGTON - The U.S. Department of Energy today announced the first industrial plants in the country to be certified under the Superior Energy Performance program -- a new, market-based industrial energy efficiency program. The energy management certification program

  7. DOE Headquarters Receives Energy Star Recognition from EPA | Department of

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

    Energy Headquarters Receives Energy Star Recognition from EPA DOE Headquarters Receives Energy Star Recognition from EPA July 9, 2008 - 2:15pm Addthis WASHINGTON - U.S. Secretary of Energy Samuel W. Bodman today accepted a plaque from the U.S. Environmental Protection Agency (EPA) certifying the Department of Energy's (DOE) James Forrestal Headquarters Building as an ENERGY STAR® building. The Forrestal building uses 40 percent less energy than the average office building, saving taxpayers

  8. DOE Strategic Petroleum Reserve Contractor Receives the Baldrige Award |

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

    Department of Energy Strategic Petroleum Reserve Contractor Receives the Baldrige Award DOE Strategic Petroleum Reserve Contractor Receives the Baldrige Award April 19, 2006 - 10:21am Addthis Vice President Cheney Presents DOE contractor with the nation's highest Presidential honor for performance excellence and quality achievement WASHINGTON, DC - Vice President Richard Cheney today presented DynMcDermott Petroleum Operations Company, operator of the U.S. Department of Energy's (DOE)

  9. DOE Waste Isolation Pilot Plant Receives EPA Recertification | Department

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

    of Energy Waste Isolation Pilot Plant Receives EPA Recertification DOE Waste Isolation Pilot Plant Receives EPA Recertification March 29, 2006 - 9:42am Addthis CARLSBAD, NM - The U.S. Department of Energy's (DOE) Carlsbad Field Office today reached a significant milestone when its Waste Isolation Pilot Plant (WIPP) was recertified by the U.S. Environmental Protection Agency (EPA). This decision indicates that after a thorough evaluation of the physical state and performance of the facility,

  10. Historically Black Colleges and Universities Receive Funds for Fossil

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

    Energy Research | Department of Energy Historically Black Colleges and Universities Receive Funds for Fossil Energy Research Historically Black Colleges and Universities Receive Funds for Fossil Energy Research August 15, 2013 - 1:18pm Addthis Washington, D.C. - Five fossil energy-related projects that will help maintain the nation's energy portfolio while also providing educational and research training opportunities for tomorrow's scientists and engineers have been selected for funding by

  11. Laboratory researcher Joel Rowland to receive DOE Early Career Award

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

    Rowland to receive DOE Early Career Award Laboratory researcher Joel Rowland to receive DOE Early Career Award Rowland's research was recognized by DOE for incorporating hydrological controls on carbon cycling in flood plain ecosystems into Earth System Models. May 8, 2014 Joel Rowland Joel Rowland Contact Steve Sandoval Communications Office (505) 665-9206 Email "Joel contributed to the vitality of our Laboratory as a postdoc and continues to provide an innovative and intellectual spark as

  12. Seventy-three New Mexico students receive Los Alamos Employees'

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

    Scholarship Fund scholarships Seventy-three students receive LAESF scholarships Seventy-three New Mexico students receive Los Alamos Employees' Scholarship Fund scholarships Raymond Fasano of Bernalillo High School is the recipient of the 2014 Platinum Scholarship. March 31, 2014 Alexander Wang, Greta Miller and Raymond Fasano Alexandr Wang, Greta Miller and Raymond Fasano Contact Steve Sandoval Communications Office (505) 665-9206 Email Tony Fox LANL Foundation (505) 753-8890 Email

  13. Jefferson Lab Project Team Receives Department of Energy Award | Jefferson

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

    Lab Pictured are office, meeting and work center areas in the Technology and Engineering Development Facility. Jefferson Lab Project Team Receives Department of Energy Award Newport News, Va., April 29, 2014 - A project team at the U.S. Department of Energy's Thomas Jefferson National Accelerator Facility - or Jefferson Lab - recently received a DOE Secretary's Achievement Award for creating a new building complex that will advance the lab's unique capabilities in superconducting

  14. Jefferson Lab Scientist Receives 2009 Presidential Early Career Award |

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

    Jefferson Lab Receives 2009 Presidential Early Career Award Jefferson Lab Scientist Receives 2009 Presidential Early Career Award Presidential Early Career Award for Scientists and Engineers recipent Gianluigi Ciovati Jefferson Lab Director Hugh Montgomery (left) congratulates Gianluigi Ciovati, who was named a 2009 recipient of a Presidential Early Career Award. Joining them in celebrating the award was Andrew Hutton, associate director for the Accelerator Division. Photo: Greg Adams

  15. LANL spinoff receives NIH grant for respiratory disease diagnostic device

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

    LANL spinoff receives NIH grant LANL spinoff receives NIH grant for respiratory disease diagnostic device Mesa Tech has been awarded a grant to develop an inexpensive, instrument-free, nucleic-acid testing device to diagnose various respiratory diseases in record time. October 19, 2011 Los Alamos National Laboratory sits on top of a once-remote mesa in northern New Mexico with the Jemez mountains as a backdrop to research and innovation covering multi-disciplines from bioscience, sustainable

  16. Newest Los Alamos facility receives LEED® Gold certification

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

    Newest facility receives LEED® Gold certification Newest Los Alamos facility receives LEED® Gold certification The Radiological Laboratory Utility Office Building is first to achieve both the Leadership in Energy and Environmental Design status and LEED Gold certification. June 13, 2012 Radiological Laboratory Utility Office Building Radiological Laboratory Utility Office Building Contact Kim Powell Communications Office (505) 695-6159 Email LOS ALAMOS, New Mexico, June 13, 2012-Los Alamos

  17. Northern New Mexico students receive $419,500 in scholarships

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

    Northern New Mexico students receive $419,500 in scholarships Community Connections: Your link to news and opportunities from Los Alamos National Laboratory Latest Issue: September 1, 2016 all issues All Issues » submit Northern New Mexico students receive $419,500 in scholarships Awards go to seven northern New Mexico counties May 5, 2014 Bernalillo High School senior Raymond Fasano is LAESF's 2014 Platinum Scholarship recipient. Bernalillo High School senior Raymond Fasano is LAESF's 2014

  18. Thirteen States Receive Energy Department Awards to Drive Greater Energy

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

    Efficiency, Save Money | Department of Energy Thirteen States Receive Energy Department Awards to Drive Greater Energy Efficiency, Save Money Thirteen States Receive Energy Department Awards to Drive Greater Energy Efficiency, Save Money November 26, 2013 - 2:44pm Addthis News Media Contact (202) 586-4940 WASHINGTON - Building on the Obama Administration's efforts to double energy productivity by 2030 and help communities save on energy bills, the Energy Department today awarded nearly $4

  19. Thirteen States Receive Energy Department Awards to Drive Greater Energy

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

    Efficiency, Save Money | Department of Energy Thirteen States Receive Energy Department Awards to Drive Greater Energy Efficiency, Save Money Thirteen States Receive Energy Department Awards to Drive Greater Energy Efficiency, Save Money November 26, 2013 - 12:00am Addthis Building on the Obama Administration's efforts to double energy productivity by 2030 and help communities save on energy bills, the Energy Department today awarded nearly $4 million to 13 states to increase statewide

  20. Six Native American companies receive economic development grants

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

    Six Native American companies receive economic development grants Community Connections: Your link to news and opportunities from Los Alamos National Laboratory Latest Issue: September 1, 2016 all issues All Issues » submit Six Native American companies receive economic development grants Awards total $60,000 March 1, 2014 The Regional Development Corporation administers grants The Regional Development Corporation administers grants Contact Community Programs Office Director Kurt Steinhaus

  1. Sixty-seven New Mexico students receive LAESF scholarships

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

    Sixty-seven New Mexico students receive LAESF scholarships LAESF scholarships winners Taos High School senior Majdolene Khweis received this year's platinum scholarship, which provides $7,500 in financial assistance annually for four years. April 28, 2011 Los Alamos National Laboratory sits on top of a once-remote mesa in northern New Mexico with the Jemez mountains as a backdrop to research and innovation covering multi-disciplines from bioscience, sustainable energy sources, to plasma physics

  2. Moab Project Receives Award for Purchasing Environmentally Friendly

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

    Products | Department of Energy Receives Award for Purchasing Environmentally Friendly Products Moab Project Receives Award for Purchasing Environmentally Friendly Products February 26, 2014 - 12:00pm Addthis MOAB, Utah - EM's Moab Uranium Mill Tailings Remedial Action Project in Utah was one of three GreenBuy Award recipients for fiscal year 2013. DOE's Office of Sustainability Support awarded the Moab Project the highest level - the Gold Award - for achieving nine goals in five categories.

  3. K-25 demolition project receives American Nuclear Society award |

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

    Department of Energy demolition project receives American Nuclear Society award K-25 demolition project receives American Nuclear Society award May 27, 2014 - 12:00pm Addthis The American Nuclear Society will recognize the K-25 demolition project at its summer meeting in June. The American Nuclear Society will recognize the K-25 demolition project at its summer meeting in June. Oak Ridge, Tenn. - The successful demolition of a former gaseous diffusion facility has been honored by the

  4. Fast-synchronizing high-fidelity spread-spectrum receiver

    DOE Patents [OSTI]

    Moore, Michael Roy; Smith, Stephen Fulton; Emery, Michael Steven

    2004-06-01

    A fast-synchronizing receiver having a circuit including an equalizer configured for manipulating an analog signal; a detector in communication with the equalizer; a filter in communication with the detector; an oscillator in communication with the filter; a gate for receiving the manipulated signal; a circuit portion for synchronizing and tracking the manipulated signal; a summing circuit in communication with the circuit portion; and an output gate.

  5. Hybrid solar central receiver for combined cycle power plant

    DOE Patents [OSTI]

    Bharathan, Desikan; Bohn, Mark S.; Williams, Thomas A.

    1995-01-01

    A hybrid combined cycle power plant including a solar central receiver for receiving solar radiation and converting it to thermal energy. The power plant includes a molten salt heat transfer medium for transferring the thermal energy to an air heater. The air heater uses the thermal energy to preheat the air from the compressor of the gas cycle. The exhaust gases from the gas cycle are directed to a steam turbine for additional energy production.

  6. Hybrid solar central receiver for combined cycle power plant

    DOE Patents [OSTI]

    Bharathan, D.; Bohn, M.S.; Williams, T.A.

    1995-05-23

    A hybrid combined cycle power plant is described including a solar central receiver for receiving solar radiation and converting it to thermal energy. The power plant includes a molten salt heat transfer medium for transferring the thermal energy to an air heater. The air heater uses the thermal energy to preheat the air from the compressor of the gas cycle. The exhaust gases from the gas cycle are directed to a steam turbine for additional energy production. 1 figure.

  7. Sandia researcher Stephanie Hansen receives DOE Early Career award |

    National Nuclear Security Administration (NNSA)

    National Nuclear Security Administration | (NNSA) Sandia researcher Stephanie Hansen receives DOE Early Career award Monday, June 9, 2014 - 3:47pm NNSA Blog Sandia National Laboratories researcher Stephanie Hansen has received a $2.5 million, five-year Early Career Research Program award from the DOE's Office of Science for her fundamental science proposal to improve existing atomic-scale models for high-energy-density matter. Hansen's winning submission, "Non-Equilibrium Atomic Physics

  8. Carlsbad Field Office Receives New Mexico's Silver Award for

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

    Environmental Excellence | Department of Energy Receives New Mexico's Silver Award for Environmental Excellence Carlsbad Field Office Receives New Mexico's Silver Award for Environmental Excellence August 1, 2012 - 12:00pm Addthis DOE Carlsbad Field Office Deputy Manager Ed Ziemianski presents a Waste Isolation Pilot Plant (WIPP) team with the Green Zia Program Silver Level Leader award from the New Mexico Environment Department earlier this month in recognition of environmental initiatives.

  9. Comments Received on Proposed Rulemaking for regulation implementing

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

    section 216(h): Coordination of Federal Transmission Permitting on Federal Lands | Department of Energy Received on Proposed Rulemaking for regulation implementing section 216(h): Coordination of Federal Transmission Permitting on Federal Lands Comments Received on Proposed Rulemaking for regulation implementing section 216(h): Coordination of Federal Transmission Permitting on Federal Lands Section 1221(a) of EPAct 2005, which added section 216(h) to the Federal Power Act, stated that the

  10. Optically triggered fire set/detonator system

    DOE Patents [OSTI]

    Chase, Jay B.; Pincosy, Philip A.; Chato, Donna M.; Kirbie, Hugh; James, Glen F.

    2007-03-20

    The present invention is directed to a system having a plurality of capacitor discharge units (CDUs) that includes electrical bridge type detonators operatively coupled to respective explosives. A pulse charging circuit is adapted to provide a voltage for each respective capacitor in each CDU. Such capacitors are discharged through the electrical bridge type detonators upon receiving an optical signal to detonate respective operatively coupled explosives at substantially the same time.

  11. Mechanism of Hydrogen Formation in Solar Parabolic Trough Receivers

    SciTech Connect (OSTI)

    Moens, L.; Blake, D. M.

    2008-03-01

    Solar parabolic trough systems for electricity production are receiving renewed attention, and new solar plants are under construction to help meet the growing demands of the power market in the Western United States. The growing solar trough industry will rely on operating experience it has gained over the last two decades. Recently, researchers found that trough plants that use organic heat transfer fluids (HTF) such as Therminol VP-1 are experiencing significant heat losses in the receiver tubes. The cause has been traced back to the accumulation of excess hydrogen gas in the vacuum annulus that surrounds the steel receiver tube, thus compromising the thermal insulation of the receiver. The hydrogen gas is formed during the thermal decomposition of the organic HTF that circulates inside the receiver loop, and the installation of hydrogen getters inside the annulus has proven to be insufficient for controlling the hydrogen build-up over the lifetime of the receivers. This paper will provide an overview of the chemical literature dealing with the thermal decomposition of diphenyl oxide and biphenyl, the two constituents of Therminol VP-1.

  12. The design and optimization of two low frequency energy harvesters employing 3C-SiC/AlN/Mo composite layers

    SciTech Connect (OSTI)

    Iqbal, Abid Mohd-Yasin, Faisal Dimitrijev, Sima

    2014-10-24

    This paper presents the design and simulation of twocantilever-based energy harvesters that employs cubic silicon carbide on silicon (3C-SiC-on-Si) wafer as the base material and bottom electrode. Aluminum Nitride (AlN) is employed as the piezoelectric/middle layer due to its excellent material properties and high stability in varying temperature and harsh environment. Molybdenum (Mo) serves as the top layer/electrode. The thickness of the structural layers are optimized through MATLAB and also analyzed via Finite Element Analysis using Intellisuite. Two designs are proposed at low resonant frequency, one with conventional cantilever beam, the other being a T-shaped cantilever beam. Both structures are simulated and their performances are compared.

  13. Advanced Reservoir Characterization and Development through High-Resolution 3C3D Seismic and Horizontal Drilling: Eva South Marrow Sand Unit, Texas County, Oklahoma

    SciTech Connect (OSTI)

    Wheeler,David M.; Miller, William A.; Wilson, Travis C.

    2002-03-11

    The Eva South Morrow Sand Unit is located in western Texas County, Oklahoma. The field produces from an upper Morrow sandstone, termed the Eva sandstone, deposited in a transgressive valley-fill sequence. The field is defined as a combination structural stratigraphic trap; the reservoir lies in a convex up -dip bend in the valley and is truncated on the west side by the Teepee Creek fault. Although the field has been a successful waterflood since 1993, reservoir heterogeneity and compartmentalization has impeded overall sweep efficiency. A 4.25 square mile high-resolution, three component three-dimensional (3C3D) seismic survey was acquired in order to improve reservoir characterization and pinpoint the optimal location of a new horizontal producing well, the ESU 13-H.

  14. Direct growth of few-layer graphene on 6H-SiC and 3C-SiC/Si via propane chemical vapor deposition

    SciTech Connect (OSTI)

    Michon, A.; Vezian, S.; Portail, M.; Ouerghi, A.; Zielinski, M.; Chassagne, T.

    2010-10-25

    We propose to grow graphene on SiC by a direct carbon feeding through propane flow in a chemical vapor deposition reactor. X-ray photoemission and low energy electron diffraction show that propane allows to grow few-layer graphene (FLG) on 6H-SiC(0001). Surprisingly, FLG grown on (0001) face presents a rotational disorder similar to that observed for FLG obtained by annealing on (000-1) face. Thanks to a reduced growth temperature with respect to the classical SiC annealing method, we have also grown FLG/3C-SiC/Si(111) in a single growth sequence. This opens the way for large-scale production of graphene-based devices on silicon substrate.

  15. Graphitic encapsulation of MgO and Fe{sub 3}C nanoparticles in the reaction of iron pentacarbonyl with magnesium

    SciTech Connect (OSTI)

    Dyjak, Sławomir; Cudziło, Stanisław; Polański, Marek; Budner, Bogusław; Bystrzycki, Jerzy

    2013-07-15

    A simple method to produce highly ordered carbon nanostructures by combustion synthesis is presented. Graphite-encapsulated magnesium oxide, iron carbide nanoparticles and carbon nanobelts were synthesized by the one-step reduction of iron pentacarbonyl with magnesium. High-resolution transmission electron microscopy analysis of the products revealed nanocrystalline MgO and Fe{sub 3}C particles surrounded by a well-crystallized, tight graphite film. The possible formation mechanism is presented and discussed. - Highlights: • We present a simple method to produce highly ordered carbon nanostructures by combustion synthesis. • The cubic MgO particles are completely coated by tight graphitic shells. • The mechanism of formation a distant carbon film on MgO surface has been discussed. • The presented method can be applied to synthesis of other core-shell structures.

  16. Molecular Basis for Complement Recognition and Inhibition Determined by Crystallographic Studies of the Staphylococcal Complement Inhibitor (SCIN) Bound to C3c and C3b

    SciTech Connect (OSTI)

    Garcia, Brandon L.; Ramyar, Kasra X.; Tzekou, Apostolia; Ricklin, Daniel; McWhorter, William J.; Lambris, John D.; Geisbrecht, Brian V.

    2010-10-22

    The human complement system plays an essential role in innate and adaptive immunity by marking and eliminating microbial intruders. Activation of complement on foreign surfaces results in proteolytic cleavage of complement component 3 (C3) into the potent opsonin C3b, which triggers a variety of immune responses and participates in a self-amplification loop mediated by a multi-protein assembly known as the C3 convertase. The human pathogen Staphylococcus aureus has evolved a sophisticated and potent complement evasion strategy, which is predicated upon an arsenal of potent inhibitory proteins. One of these, the staphylococcal complement inhibitor (SCIN), acts at the level of the C3 convertase (C3bBb) and impairs downstream complement function by trapping the convertase in a stable but inactive state. Previously, we have shown that SCIN binds C3b directly and competitively inhibits binding of human factor H and, to a lesser degree, that of factor B to C3b. Here, we report the co-crystal structures of SCIN bound to C3b and C3c at 7.5 and 3.5 {angstrom} limiting resolution, respectively, and show that SCIN binds a critical functional area on C3b. Most significantly, the SCIN binding site sterically occludes the binding sites of both factor H and factor B. Our results give insight into SCIN binding to activated derivatives of C3, explain how SCIN can recognize C3b in the absence of other complement components, and provide a structural basis for the competitive C3b-binding properties of SCIN. In the future, this may suggest templates for the design of novel complement inhibitors based upon the SCIN structure.

  17. CO J = 1-0 AND J = 2-1 LINE OBSERVATIONS OF THE MOLECULAR-CLOUD-BLOCKED SUPERNOVA REMNANT 3C434.1

    SciTech Connect (OSTI)

    Jeong, Il-Gyo; Koo, Bon-Chul; Cho, Wan-Kee; Kramer, Carsten; Stutzki, Juergen; Byun, Do-Young E-mail: koo@astro.snu.ac.kr

    2013-06-20

    We present the results of CO emission line observations toward the semicircular Galactic supernova remnant (SNR) 3C434.1 (G94.0+1.0). We mapped an area covering the whole SNR in the {sup 12}CO J = 1-0 emission line using the Seoul Radio Astronomy Observatory 6 m telescope and found a large molecular cloud superposed on the faint western part of the SNR. The cloud was elongated along the north-south direction and showed a very good spatial correlation with the radio features of the SNR. We carried out {sup 12}CO J = 2-1 line observations of this cloud using the Koelner Observatorium fuer Sub-Millimeter Astronomie 3 m telescope and found a region in which the {sup 12}CO J = 2-1 to J = 1-0 ratio was high ({approx}1.6). This higher excitation, together with the morphological relation, strongly suggested that the molecular cloud was interacting with the SNR. The systemic velocity of the molecular cloud (-13 km s{sup -1}) gave a kinematic distance of 3.0 kpc to the SNR-molecular cloud system. We derived the physical parameters of the SNR based on this new distance. We examined the variation of the radio spectral index over the remnant and found that it was flatter in the western part, wherein the SNR was interacting with the molecular cloud. We therefore propose that 3C434.1 is the remnant of a supernova explosion that occurred just outside the boundary of a relatively thin, sheet-like molecular cloud. We present a hydrodynamic model showing that its asymmetric radio morphology can result from its interaction with this blocking molecular cloud.

  18. Optical Design for Extremely Large Telescope Adaptive Optics...

    Office of Scientific and Technical Information (OSTI)

    Large Telescope Adaptive Optics Systems Citation Details In-Document Search Title: Optical Design for Extremely Large Telescope Adaptive Optics Systems You are accessing a ...

  19. Optical Design for Extremely Large Telescope Adaptive Optics...

    Office of Scientific and Technical Information (OSTI)

    ThesisDissertation: Optical Design for Extremely Large Telescope Adaptive Optics Systems Citation Details In-Document Search Title: Optical Design for Extremely Large Telescope ...

  20. Optical fiber sensor technique for strain measurement

    DOE Patents [OSTI]

    Butler, Michael A.; Ginley, David S.

    1989-01-01

    Laser light from a common source is split and conveyed through two similar optical fibers and emitted at their respective ends to form an interference pattern, one of the optical fibers having a portion thereof subjected to a strain. Changes in the strain cause changes in the optical path length of the strain fiber, and generate corresponding changes in the interference pattern. The interference pattern is received and transduced into signals representative of fringe shifts corresponding to changes in the strain experienced by the strained one of the optical fibers. These signals are then processed to evaluate strain as a function of time, typical examples of the application of the apparatus including electrodeposition of a metallic film on a conductive surface provided on the outside of the optical fiber being strained, so that strains generated in the optical fiber during the course of the electrodeposition are measurable as a function of time. In one aspect of the invention, signals relating to the fringe shift are stored for subsequent processing and analysis, whereas in another aspect of the invention the signals are processed for real-time display of the strain changes under study.

  1. Latching micro optical switch

    DOE Patents [OSTI]

    Garcia, Ernest J; Polosky, Marc A

    2013-05-21

    An optical switch reliably maintains its on or off state even when subjected to environments where the switch is bumped or otherwise moved. In addition, the optical switch maintains its on or off state indefinitely without requiring external power. External power is used only to transition the switch from one state to the other. The optical switch is configured with a fixed optical fiber and a movable optical fiber. The movable optical fiber is guided by various actuators in conjunction with a latching mechanism that configure the switch in one position that corresponds to the on state and in another position that corresponds to the off state.

  2. Femtosecond optical clock

    SciTech Connect (OSTI)

    Bagaev, Sergei N; Denisov, Vladimir I; Zakharyash, Valerii F; Kashirsky, Aleksandr V; Klementyev, Vasilii M; Kuznetsov, Sergei A; Korel', I I; Pivtsov, V S

    2004-12-31

    New advances in the field of synthesis of optical frequencies and the development of a new generation of optical clocks are considered. The use of mode-locked femtosecond lasers and fibre emission-spectrum stretchers allows the synthesis of any frequencies (from radio-frequencies to the UV region) and drastically simplifies the structure of an optical clock. The schemes of femtosecond optical clock are presented and the application of tapered optical fibres in them is described. (optical metrology and quantum frequency standards)

  3. Felt-metal-wick heat-pipe solar receiver

    SciTech Connect (OSTI)

    Andraka, C.E.; Adkins, D.R.; Moss, T.A.; Cole, H.M.; Andreas, N.H.

    1994-12-31

    Reflux heat-pipe receivers have been identified as a desirable interface to couple a Stirling-cycle engine with a parabolic dish solar concentrator. The reflux receiver provides power nearly isothermally to the engine heater heads while decoupling the heater head design from the solar absorber surface design. The independent design of the receiver and engine heater head leads to higher system efficiency. Heat pipe reflux receivers have been demonstrated at approximately 65 kW{sub t} power throughput. Several 25 to 30-kW{sub e} Stirling-cycle engines are under development, and will soon be incorporated in commercial dish-Stirling systems. These engines will require reflux receivers with power throughput limits reaching 90-kW{sub t}. The extension of heat pipe technology from 60 kW{sub t} to 100 kW{sub t} is not trivial. Current heat pipe wick technology is pushed to its limits. It is necessary to develop and test advanced wick structure technologies to perform this task. Sandia has developed and begun testing a Bekaert Corporation felt metal wick structure fabricated by Porous Metal Products Inc. This wick is about 95% porous, and has liquid permeability a factor of 2 to 8 times higher than conventional technologies for a given maximum pore radius. The wick has been successfully demonstrated in a bench-scale heat pipe, and a full-scale on-sun receiver has been fabricated. This report details the wick design, characterization and installation into a heat pipe receiver, and the results of the bench-scale tests are presented. The wick performance is modeled, and the model results are compared to test results.

  4. Enhanced Optical Effects from Excitons in Multi-Chromophore Systems |

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

    MIT-Harvard Center for Excitonics Enhanced Optical Effects from Excitons in Multi-Chromophore Systems February 7, 2013 at 3pm/36-428 Ted Goodson Department of Chemistry, University of Michigan goodson002_000 Abstract: Organic conjugated macromolecules have received great attention due to their use in optical and electronic applications. Certain molecular assemblies have shown enhanced light harvesting properties by virtue of strong excitonic coupling in the multi-chromophore system. Organic

  5. Rugged fiber optic probe for raman measurement

    DOE Patents [OSTI]

    O'Rourke, Patrick E.; Toole, Jr., William R.; Nave, Stanley E.

    1998-01-01

    An optical probe for conducting light scattering analysis is disclosed. The probe comprises a hollow housing and a probe tip. A fiber assembly made up of a transmitting fiber and a receiving bundle is inserted in the tip. A filter assembly is inserted in the housing and connected to the fiber assembly. A signal line from the light source and to the spectrometer also is connected to the filter assembly and communicates with the fiber assembly. By using a spring-loaded assembly to hold the fiber connectors together with the in-line filters, complex and sensitive alignment procedures are avoided. The close proximity of the filter assembly to the probe tip eliminates or minimizes self-scattering generated by the optical fiber. Also, because the probe can contact the sample directly, sensitive optics can be eliminated.

  6. Multiple channel optical data acquisition system

    DOE Patents [OSTI]

    Fasching, G.E.; Goff, D.R.

    1985-02-22

    A multiple channel optical data acquisition system is provided in which a plurality of remote sensors monitoring specific process variable are interrogated by means of a single optical fiber connecting the remote station/sensors to a base station. The remote station/sensors derive all power from light transmitted through the fiber from the base station. Each station/sensor is individually accessed by means of a light modulated address code sent over the fiber. The remote station/sensors use a single light emitting diode to both send and receive light signals to communicate with the base station and provide power for the remote station. The system described can power at least 100 remote station/sensors over an optical fiber one mile in length.

  7. Active optical zoom system

    DOE Patents [OSTI]

    Wick, David V.

    2005-12-20

    An active optical zoom system changes the magnification (or effective focal length) of an optical imaging system by utilizing two or more active optics in a conventional optical system. The system can create relatively large changes in system magnification with very small changes in the focal lengths of individual active elements by leveraging the optical power of the conventional optical elements (e.g., passive lenses and mirrors) surrounding the active optics. The active optics serve primarily as variable focal-length lenses or mirrors, although adding other aberrations enables increased utility. The active optics can either be LC SLMs, used in a transmissive optical zoom system, or DMs, used in a reflective optical zoom system. By appropriately designing the optical system, the variable focal-length lenses or mirrors can provide the flexibility necessary to change the overall system focal length (i.e., effective focal length), and therefore magnification, that is normally accomplished with mechanical motion in conventional zoom lenses. The active optics can provide additional flexibility by allowing magnification to occur anywhere within the FOV of the system, not just on-axis as in a conventional system.

  8. Prototype design of an advanced ceramic receiver. Final report

    SciTech Connect (OSTI)

    Not Available

    1984-04-01

    The purpose of the activities described in this report is to investigate an advanced gas receiver design concept. The advanced gas reactor design concept utilizes a translucent ceramic tube packed with a solar absorbing, porous material. A gas is pumped through the tube and is heated to a high temperature by direct solar energy incident on the tube surface. The basic energy exchange mechanisms are the transfer of the incoming solar flux through the translucent tube, the absorption of the solar energy by the packing material, and the convective transfer of the absorbed solar energy from the packing material to the gas. The approach taken for this activity was to develop a conceptual design of a commercial size receiver, investigate critical design elements of the commercial receiver, develop a preliminary design of a prototype, and identify the appropriate facility for testing the prototype. In order to develop the conceptual design of the commercial size receiver a thermo/hydraulic numerical model of the tube was devised. This model yields predictions of the thermal performance of the tube along with estimates of the tube pressure drops. A detailed description of the model is given in section IIIA of this report. Using the model it was possible to establish an optimum tube diameter and length for a commercial size receiver. With the tube dimensions known it was then possible to perform design studies to determine tube stresses and attachment schemes.

  9. ''Atomic Optics'': Nonimaging Optics on the Nanoscale

    SciTech Connect (OSTI)

    Roland Winston Joseph O'Gallagher

    2005-01-15

    This is the final report for a one year close out extension of our basic research program that was established at the University of Chicago more than sixteen years ago to explore and develop the optical sub-discipline that has come to be known as ''nonimaging optics''. This program has been extremely fruitful, having both broadened the range of formalism available for workers in this field and led to the discovery of many new families of optical devices. These devices and techniques have applications wherever the efficient transport and transformation of light distributions are important, in particular in illumination, fiber optics, collection and concentration of sunlight, and the detection of faint light signals in physics and astrophysics. Over the past thirty years, Nonimaging Optics (Welford and Winston, 1989) has brought a fresh approach to the analysis of many problems in classical macro-scale optics. Through the application of phase-space concepts, statistical methods, thermodynamic arguments, etc., many previously established performance limits were able to be broken and many technical surprises with exciting practical applications were discovered. The most recent three-year phase of our long-term continuing program ended in late 2002 and emphasized extending our work in geometrical optics and expanding it to include some interesting questions in physical optics as well as in the new field of statistical optics. This report presents a survey of the basic history and concepts of nonimaging optics and reviews highlights and significant accomplishments over the past fifteen years. This is followed by a more detailed summary of recent research directions and accomplishments during the last three years. This most recent phase was marked by the broadening in scope to include a separate project involving a collaboration with an industrial partner, Science Applications International Corporation (SAIC). This effort was proposed and approved in 1998 and was

  10. High bandwidth optical mount

    DOE Patents [OSTI]

    Bender, D.A.; Kuklo, T.

    1994-11-08

    An optical mount, which directs a laser beam to a point by controlling the position of a light-transmitting optic, is stiffened so that a lowest resonant frequency of the mount is approximately one kilohertz. The optical mount, which is cylindrically-shaped, positions the optic by individually moving a plurality of carriages which are positioned longitudinally within a sidewall of the mount. The optical mount is stiffened by allowing each carriage, which is attached to the optic, to move only in a direction which is substantially parallel to a center axis of the optic. The carriage is limited to an axial movement by flexures or linear bearings which connect the carriage to the mount. The carriage is moved by a piezoelectric transducer. By limiting the carriage to axial movement, the optic can be kinematically clamped to a carriage. 5 figs.

  11. High bandwidth optical mount

    DOE Patents [OSTI]

    Bender, Donald A.; Kuklo, Thomas

    1994-01-01

    An optical mount, which directs a laser beam to a point by controlling the position of a light-transmitting optic, is stiffened so that a lowest resonant frequency of the mount is approximately one kilohertz. The optical mount, which is cylindrically-shaped, positions the optic by individually moving a plurality of carriages which are positioned longitudinally within a sidewall of the mount. The optical mount is stiffened by allowing each carriage, which is attached to the optic, to move only in a direction which is substantially parallel to a center axis of the optic. The carriage is limited to an axial movement by flexures or linear bearings which connect the carriage to the mount. The carriage is moved by a piezoelectric transducer. By limiting the carriage to axial movement, the optic can be kinematically clamped to a carriage.

  12. Functional design criteria 241-AP-102 Flexible Receiver System

    SciTech Connect (OSTI)

    Roblyer, S.P.

    1995-02-16

    A mixer pump was installed in the 1.07 m (42-in.) riser of the central pump pit of tank 241-AP-102 to mitigate potential fluid separation particle sedimentation by mixing the tank`s contents. The mixer pump performed this function until failure. Its removal is now necessary to meet possible tank content removal commitments or other corrective actions. The proposed removal procedure requires a flexible receiver that will provide a barrier to contamination during removal and transfer of the pump to the mixer pump storage container. This document describes the functional design criteria of the flexible receiver. These criteria include the functional and performance requirements of the flexible receiver as a barrier to contamination during normal conditions and contingencies and the instrumentation requirements.

  13. Development of the Multi-Level Seismic Receiver (MLSR)

    SciTech Connect (OSTI)

    Sleefe, G.E.; Engler, B.P.; Drozda, P.M.; Franco, R.J.; Morgan, J.

    1995-02-01

    The Advanced Geophysical Technology Department (6114) and the Telemetry Technology Development Department (2664) have, in conjunction with the Oil Recovery Technology Partnership, developed a Multi-Level Seismic Receiver (MLSR) for use in crosswell seismic surveys. The MLSR was designed and evaluated with the significant support of many industry partners in the oil exploration industry. The unit was designed to record and process superior quality seismic data operating in severe borehole environments, including high temperature (up to 200{degrees}C) and static pressure (10,000 psi). This development has utilized state-of-the-art technology in transducers, data acquisition, and real-time data communication and data processing. The mechanical design of the receiver has been carefully modeled and evaluated to insure excellent signal coupling into the receiver.

  14. Optical voltage reference

    DOE Patents [OSTI]

    Rankin, R.; Kotter, D.

    1994-04-26

    An optical voltage reference for providing an alternative to a battery source is described. The optical reference apparatus provides a temperature stable, high precision, isolated voltage reference through the use of optical isolation techniques to eliminate current and impedance coupling errors. Pulse rate frequency modulation is employed to eliminate errors in the optical transmission link while phase-lock feedback is employed to stabilize the frequency to voltage transfer function. 2 figures.

  15. Reflective optical imaging system

    DOE Patents [OSTI]

    Shafer, David R.

    2000-01-01

    An optical system compatible with short wavelength (extreme ultraviolet) radiation comprising four reflective elements for projecting a mask image onto a substrate. The four optical elements are characterized in order from object to image as convex, concave, convex and concave mirrors. The optical system is particularly suited for step and scan lithography methods. The invention increases the slit dimensions associated with ringfield scanning optics, improves wafer throughput and allows higher semiconductor device density.

  16. Fiber optic micro accelerometer

    DOE Patents [OSTI]

    Swierkowski, Steve P.

    2005-07-26

    An accelerometer includes a wafer, a proof mass integrated into the wafer, at least one spring member connected to the proof mass, and an optical fiber. A Fabry-Perot cavity is formed by a partially reflective surface on the proof mass and a partially reflective surface on the end of the optical fiber. The two partially reflective surfaces are used to detect movement of the proof mass through the optical fiber, using an optical detection system.

  17. Optical voltage reference

    DOE Patents [OSTI]

    Rankin, Richard; Kotter, Dale

    1994-01-01

    An optical voltage reference for providing an alternative to a battery source. The optical reference apparatus provides a temperature stable, high precision, isolated voltage reference through the use of optical isolation techniques to eliminate current and impedance coupling errors. Pulse rate frequency modulation is employed to eliminate errors in the optical transmission link while phase-lock feedback is employed to stabilize the frequency to voltage transfer function.

  18. Great circle solution to polarization-based quantum communication (QC) in optical fiber

    DOE Patents [OSTI]

    Nordholt, Jane Elizabeth; Peterson, Charles Glen; Newell, Raymond Thorson; Hughes, Richard John

    2016-03-15

    Birefringence in optical fibers is compensated by applying polarization modulation at a receiver. Polarization modulation is applied so that a transmitted optical signal has states of polarization (SOPs) that are equally spaced on the Poincare sphere. Fiber birefringence encountered in propagation between a transmitter and a receiver rotates the great circle on the Poincare sphere that represents the polarization bases used for modulation. By adjusting received polarizations, polarization components of the received optical signal can be directed to corresponding detectors for decoding, regardless of the magnitude and orientation of the fiber birefringence. A transmitter can be configured to transmit in conjugate polarization bases whose SOPs can be represented as equidistant points on a great circle so that the received SOPs are mapped to equidistant points on a great circle and routed to corresponding detectors.

  19. Recent reflux receiver developments under the US DOE program

    SciTech Connect (OSTI)

    Andraka, C.E.; Diver, R.B.; Moreno, J.B.; Moss, T.A.; Adkins, D.R.

    1994-10-01

    The United States Department of Energy (DOE) Solar Thermal Program, through Sandia National Laboratories (SNL), is cooperating with industry to commercialize dish-Stirling technology. Sandia and the DOE have actively encouraged the use of liquid metal reflux receivers in these systems to improve efficiency and lower the levelized cost of electricity. The reflux receiver uses two-phase heat transfer as a {open_quotes}thermal transformer{close_quotes} to transfer heat from a parabolic tracking-concentrator to the heater heads of the Stirling engine. The two-phase system leads to a higher available input temperature, lower thermal stresses, longer life, and independent design of the absorber and engine sections. Two embodiments of reflux receivers have been investigated: Pool boilers and heat pipes. Several pool-boiler reflux receivers have been successfully demonstrated on sun at up to 64 kWt throughput at SNL. In addition, a bench-scale device was operated for 7500 hours to investigate materials compatibility and boiling stability. Significant progress has also been made on heat pipe receiver technology. Sintered metal wick heat pipes have been investigated extensively for application to 7.5 kWe and 25 kWe systems. One test article has a massed over 1800 hours of on-sun operation. Another was limit tested at Sandia to 65 kWt throughput. These devices incorporate a nickel-powder thick wick structure with condensate return directly to the wick surface. Circumferential tubular arteries are optionally employed to improve the operating margin. In addition, DOE has begun a development program for advanced wick structures capable of supporting the Utility Scale Joint Venture Program, requiring up to 100 kWt throughput. Promising technologies include a brazed stainless steel powdered metal wick and a stainless steel metal felt wick. Bench-scale testing has been encouraging, and on-sun testing is expected this fall. Prototype gas-fired hybrid solar receivers have also been.

  20. Heat Pipe Solar Receiver Development Activities at Sandia National Laboratories

    SciTech Connect (OSTI)

    Adkins, D.R.; Andraka, C.E.; Moreno, J.B.; Moss, T.A.; Rawlinson, K.S.; Showalter, S.K.

    1999-01-08

    Over the past decade, Sandia National Laboratories has been involved in the development of receivers to transfer energy from the focus of a parabolic dish concentrator to the heater tubes of a Stirling engine. Through the isothermal evaporation and condensation of sodium. a heat-pipe receiver can efficiently transfer energy to an engine's working fluid and compensate for irregularities in the flux distribution that is delivered by the concentrator. The operation of the heat pipe is completely passive because the liquid sodium is distributed over the solar-heated surface by capillary pumping provided by a wick structure. Tests have shown that using a heat pipe can boost the system performance by twenty percent when compared to directly illuminating the engine heater tubes. Designing heat pipe solar receivers has presented several challenges. The relatively large area ({approximately}0.2 m{sup 2}) of the receiver surface makes it difficult to design a wick that can continuously provide liquid sodium to all regions of the heated surface. Selecting a wick structure with smaller pores will improve capillary pumping capabilities of the wick, but the small pores will restrict the flow of liquid and generate high pressure drops. Selecting a wick that is comprised of very tine filaments can increase the permeability of the wick and thereby reduce flow losses, however, the fine wick structure is more susceptible to corrosion and mechanical damage. This paper provides a comprehensive review of the issues encountered in the design of heat pipe solar receivers and solutions to problems that have arisen. Topics include: flow characterization in the receiver, the design of wick systems. the minimization of corrosion and dissolution of metals in sodium systems. and the prevention of mechanical failure in high porosity wick structures.

  1. Advanced Low-Cost Receivers for Parabolic Troughs

    Broader source: Energy.gov [DOE]

    This fact sheet describes an advanced, low-cost receiver project for parabolic troughs, awarded under the DOE's 2012 SunShot Concentrating Solar Power R&D award program. Norwich Technologies is designing a novel receiver that addresses these issues for parabolic trough concentrating solar power systems. This technology represents significant operational and cost advances in the most trusted and broadly implemented form of CSP and provides a viable pathway to achieving SunShot’s $0.06/kWh goal for utility-scale CSP systems.

  2. Tomé to receive Khan International Medal

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

    Tomé to receive Khan International Medal Tomé to receive Khan International Medal The International Journal of Plasticity recognized Tomé for his "outstanding life-long contributions in the field of plasticity." November 18, 2015 Carlos Tomé Carlos Tomé Communications Office (505) 667-7000 The Khan International Medal is named after the International Journal of Plasticity Founding Editor-In-Chief Akhtar Khan. The International Journal of Plasticity will honor Carlos Tomé of

  3. Local student receives Y-12-sponsored scholarship | Y-12 National

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

    Security Complex Local student receives ... Local student receives Y-12-sponsored scholarship Posted: August 22, 2011 - 1:56pm For a second consecutive year, B&W Y-12 sponsored a $2,500 Tennessee Valley Technology Council (TVTC) Scholarship to support a local student "passionate about technology." This year's winner is Elijah Harris. Harris will be entering the University of Tennessee’s College of Agriculture this fall with plans to major in biosystems engineering. Concerns

  4. Testing of Stirling engine solar reflux heat-pipe receivers

    SciTech Connect (OSTI)

    Rawlinson, S.; Cordeiro, P.; Dudley, V.; Moss, T.

    1993-07-01

    Alkali metal heat-pipe receivers have been identified as a desirable interface to couple a Stirling-cycle engine with a parabolic dish solar concentrator. The reflux receiver provides power nearly isothermally to the engine heater heads while de-coupling the heater head design from the solar absorber surface design. The independent design of the receiver and engine heater head leads to high system efficiency. Heat pipe reflux receivers have been demonstrated at approximately 30 kW{sub t} power throughput by others. This size is suitable fm engine output powers up to 10 kW{sub e}. Several 25-kW{sub e}, Stirling-cycle engines exist, as well as designs for 75-kW{sub t} parabolic dish solar concentrators. The extension of heat pipe technology from 30 kW{sub t} to 75 kW{sub t} is not trivial. Heat pipe designs are pushed to their limits, and it is critical to understand the flux profiles expected from the dish, and the local performance of the wick structure. Sandia has developed instrumentation to monitor and control the operation of heat pipe reflux receivers to test their throughput limits, and analytical models to evaluate receiver designs. In the past 1.5 years, several heat pipe receivers have been tested on Sandia`s test bed concentrators (TBC`s) and 60-kW{sub t} solar furnace. A screen-wick heat pipe developed by Dynatherm was tested to 27.5 kW{sub t} throughput. A Cummins Power Generation (CPG)/Thermacore 30-kW{sub t} heat pipe was pushed to a throughput of 41 kW{sub t} to verify design models. A Sandia-design screen-wick and artery 75-kW{sub t} heat pipe and a CPG/Thermacore 75-kW{sub t} sintered-wick heat pipe were also limit tested on the TBC. This report reviews the design of these receivers, and compares test results with model predictions.

  5. Method and device for detecting impact events on a security barrier which includes a hollow rebar allowing insertion and removal of an optical fiber

    DOE Patents [OSTI]

    Pies, Ross E.

    2016-03-29

    A method and device for the detection of impact events on a security barrier. A hollow rebar is farmed within a security barrier, whereby the hollow rebar is completely surrounded by the security barrier. An optical fiber passes through the interior of the hollow rebar. An optical transmitter and an optical receiver are both optically connected to the optical fiber and connected to optical electronics. The optical electronics are configured to provide notification upon the detection of an impact event at the security barrier based on the detection of disturbances within the optical fiber.

  6. Baseload Nitrate Salt Central Receiver Power Plant Design Final Report

    SciTech Connect (OSTI)

    Tilley, Drake; Kelly, Bruce; Burkholder, Frank

    2014-12-12

    The objectives of the work were to demonstrate that a 100 MWe central receiver plant, using nitrate salt as the receiver coolant, thermal storage medium, and heat transport fluid in the steam generator, can 1) operate, at full load, for 6,400 hours each year using only solar energy, and 2) satisfy the DOE levelized energy cost goal of $0.09/kWhe (real 2009 $). To achieve these objectives the work incorporated a large range of tasks relating to many different aspects of a molten salt tower plant. The first Phase of the project focused on developing a baseline design for a Molten Salt Tower and validating areas for improvement. Tasks included a market study, receiver design, heat exchanger design, preliminary heliostat design, solar field optimization, baseline system design including PFDs and P&IDs and detailed cost estimate. The baseline plant met the initial goal of less than $0.14/kWhe, and reinforced the need to reduce costs in several key areas to reach the overall $0.09/kWhe goal. The major improvements identified from Phase I were: 1) higher temperature salt to improve cycle efficiency and reduce storage requirements, 2) an improved receiver coating to increase the efficiency of the receiver, 3) a large receiver design to maximize storage and meet the baseload hours objective, and 4) lower cost heliostat field. The second Phase of the project looked at advancing the baseline tower with the identified improvements and included key prototypes. To validate increasing the standard solar salt temperature to 600 °C a dynamic test was conducted at Sandia. The results ultimately proved the hypothesis incorrect and showed high oxide production and corrosion rates. The results lead to further testing of systems to mitigate the oxide production to be able to increase the salt temperature for a commercial plant. Foster Wheeler worked on the receiver design in both Phase I and Phase II looking at both design and lowering costs utilizing commercial fossil boiler

  7. W28 and 3C 400. 2 - Two shell-like radio supernova remnants with centrally peaked X-ray morphologies

    SciTech Connect (OSTI)

    Long, K.S.; Blair, W.P.; Matsui, Yutaka; White, R.L. Space Telescope Science Institute, Baltimore, MD )

    1991-06-01

    The paper describes X-ray and optical observations with the Einstein Observatory of two SNRs which are examples of a group of SNRs that have centrally peaked X-ray surface brightness distributions and limb-brightened radio morphologies. X-ray and optical spectra confirm that they are located along lines of sight with substantial intervening absorption, as is the case of other objects that have these morphological characteristics. The hydrogen column density along the line of sight to both remnants is established at (7-11) x 10 to the 21st/sq cm. A thermal origin is proposed as the most likely explanation for the X-ray morphology. It is demonstrated that these SNRs do not have a density and temperature distribution which resembles that of a point explosion in a uniform-density medium, even when the overburden of absorption is considered. 46 refs.

  8. Nikon PTIPHOT-88 Optical Microscope

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

    OPTIPHOT-88 Optical Microscope micro1.jpg (69171 bytes)

  9. Parallel optics technology assessment for the versatile link project

    SciTech Connect (OSTI)

    Chramowicz, J.; Kwan, S.; Rivera, R.; Prosser, A.; /Fermilab

    2011-01-01

    This poster describes the assessment of commercially available and prototype parallel optics modules for possible use as back end components for the Versatile Link common project. The assessment covers SNAP12 transmitter and receiver modules as well as optical engine technologies in dense packaging options. Tests were performed using vendor evaluation boards (SNAP12) as well as custom evaluation boards (optical engines). The measurements obtained were used to compare the performance of these components with single channel SFP+ components operating at a transmission wavelength of 850 nm over multimode fibers.

  10. Optical modulator including grapene

    DOE Patents [OSTI]

    Liu, Ming; Yin, Xiaobo; Zhang, Xiang

    2016-06-07

    The present invention provides for a one or more layer graphene optical modulator. In a first exemplary embodiment the optical modulator includes an optical waveguide, a nanoscale oxide spacer adjacent to a working region of the waveguide, and a monolayer graphene sheet adjacent to the spacer. In a second exemplary embodiment, the optical modulator includes at least one pair of active media, where the pair includes an oxide spacer, a first monolayer graphene sheet adjacent to a first side of the spacer, and a second monolayer graphene sheet adjacent to a second side of the spacer, and at least one optical waveguide adjacent to the pair.

  11. High temperature materials experience at the Central Receiver Test Facility

    SciTech Connect (OSTI)

    Holmes, J.T.

    1982-01-01

    During four years of operation at the Central Receiver Test Facility (CRTF) ceramics have performed well in cyclic solar flux densities of less than 30 W/cm/sup 2/. Above 100 W/cm/sup 2/, serious limitations exist. Important application considerations include: the geometry, cyclic and long time exposures, flux density gradients, thermal shock, weathering, and soiling.

  12. Sign me up to receive news and event updates

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

    Mailing List Sign me up to receive news and event updates Find out what's happening @ the Bradbury Science Museum by joining our mailing list. Your Name Your Email Additional Comments Reset Submit News & Events Events Calendar Events Mailing List Lecture Videos Newsletter Archive All Issues

  13. Modular assembly of a photovoltaic solar energy receiver

    DOE Patents [OSTI]

    Graven, Robert M.; Gorski, Anthony J.; Schertz, William W.; Graae, Johan E. A.

    1978-01-01

    There is provided a modular assembly of a solar energy concentrator having a photovoltaic energy receiver with passive cooling. Solar cell means are fixedly coupled to a radiant energy concentrator. Tension means bias a large area heat sink against the cell thereby allowing the cell to expand or contract with respect to the heat sink due to differential heat expansion.

  14. DOE Lab Receives Award for Work on Drilling Technology

    Broader source: Energy.gov [DOE]

    On May 3, 2013 the Department of Energy’s National Energy Technology Laboratory (NETL) received an award for its role in a joint project that helped develop what is now Schlumberger’s Slider product line. The Lab was recognized for the project's contributions to directional drilling.

  15. Container Technologies Industries, LLC receives small business award | Y-12

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

    National Security Complex Container Technologies ... Container Technologies Industries, LLC receives small business award The mp4 video format is not supported by this browser. Download video Captions: On Time: 5:04 min. CNS recently honored Container Technologies Industries, LLC, a small business in Scott County, with an award. Learn how CTI is making a difference in an economically challenged community

  16. BES Technologies, LLC receives small business award | Y-12 National

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

    Security Complex BES Technologies, LLC ... BES Technologies, LLC receives small business award The mp4 video format is not supported by this browser. Download video Captions: On Time: 4:55 min. BES Technologies, LLC was recently honored with a small business award. Learn more about them in this short video

  17. Crystallization and X-ray diffraction analysis of the complement component-3 (C3) inhibitory domain of Efb from Staphylococcus aureus

    SciTech Connect (OSTI)

    Hammel, Michal; Ramyar, Kasra X.; Spencer, Charles T.; Geisbrecht, Brian V.

    2006-03-01

    The crystallization and results of multiwavelength anomalous diffraction studies of a recombinant C3-inhibitory fragment of Efb from S. aureus are reported. The extracellular fibrinogen-binding protein (Efb) of Staphylococcus aureus is a multifunctional virulence factor capable of potent inhibition of complement component-3 (C3) activity in addition to its previously described fibrinogen-binding properties. A truncated recombinant form of Efb (Efb-C) that binds C3 has been overexpressed and purified and has been crystallized using the hanging-drop vapor-diffusion technique. Crystals of native Efb-C grew in the tetragonal space group P4{sub 3} (unit-cell parameters a = b = 59.53, c = 46.63 Å) with two molecules in the asymmetric unit and diffracted well beyond 1.25 Å limiting Bragg spacing. To facilitate de novo phasing of the Efb-C crystals, two independent site-directed mutants were engineered in which either residue Ile112 or Val140 was replaced with methionine and crystals isomorphous to those of native Efb-C were reproduced using a seleno-l-methionine-labeled form of each mutant protein. Multiwavelength anomalous diffraction (MAD) data were collected on both mutants and analyzed for their phasing power toward solution and refinement of a high-resolution Efb-C crystal structure.

  18. SUZAKU VIEW OF THE SWIFT/BAT ACTIVE GALACTIC NUCLEI. IV. NATURE OF TWO NARROW-LINE RADIO GALAXIES (3C 403 AND IC 5063)

    SciTech Connect (OSTI)

    Tazaki, Fumie; Ueda, Yoshihiro; Terashima, Yuichi; Mushotzky, Richard F.

    2011-09-01

    We report the results of Suzaku broadband X-ray observations of the two narrow-line radio galaxies, 3C 403 and IC 5063. Combined with the Swift/Burst Alert Telescope (BAT) spectra averaged for 58 months, we are able to accurately constrain their spectral properties over the 0.5-200 keV band. The spectra of both nuclei are well represented with an absorbed cutoff power law, an absorbed reflection component from cold matter with an iron-K emission line, and an unabsorbed soft component, which gives a firm upper limit for the scattered emission. The reflection strength normalized to the averaged BAT flux is R {identical_to} {Omega}/2{pi} {approx} 0.6 in both targets, implying that their tori have a sufficiently large solid angle to produce the reprocessed emission. A numerical torus model with an opening angle of {approx}50{sup 0} well reproduces the observed spectra. We discuss the possibility that the amount of the normal gas responsible for Thomson scattering is systematically smaller in radio galaxies compared with Seyfert galaxies.

  19. Control of coherent information via on-chip photonic–phononic emitter–receivers

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

    Shin, Heedeuk; Cox, Jonathan A.; Jarecki, Robert; Starbuck, Andrew; Wang, Zheng; Rakich, Peter T.

    2015-03-05

    We report that rapid progress in integrated photonics has fostered numerous chip-scale sensing, computing and signal processing technologies. However, many crucial filtering and signal delay operations are difficult to perform with all-optical devices. Unlike photons propagating at luminal speeds, GHz-acoustic phonons moving at slower velocities allow information to be stored, filtered and delayed over comparatively smaller length-scales with remarkable fidelity. Hence, controllable and efficient coupling between coherent photons and phonons enables new signal processing technologies that greatly enhance the performance and potential impact of integrated photonics. Here we demonstrate a mechanism for coherent information processing based on travelling-wave photon–phonon transduction,more » which achieves a phonon emit-and-receive process between distinct nanophotonic waveguides. Using this device, physics—which supports GHz frequencies—we create wavelength-insensitive radiofrequency photonic filters with frequency selectivity, narrow-linewidth and high power-handling in silicon. More generally, this emit-receive concept is the impetus for enabling new signal processing schemes.« less

  20. Fiber optic vibration sensor

    DOE Patents [OSTI]

    Dooley, J.B.; Muhs, J.D.; Tobin, K.W.

    1995-01-10

    A fiber optic vibration sensor utilizes two single mode optical fibers supported by a housing with one optical fiber fixedly secured to the housing and providing a reference signal and the other optical fiber having a free span length subject to vibrational displacement thereof with respect to the housing and the first optical fiber for providing a signal indicative of a measurement of any perturbation of the sensor. Damping or tailoring of the sensor to be responsive to selected levels of perturbation is provided by altering the diameter of optical fibers or by immersing at least a portion of the free span length of the vibration sensing optical fiber into a liquid of a selected viscosity. 2 figures.

  1. Fiber optic vibration sensor

    DOE Patents [OSTI]

    Dooley, Joseph B.; Muhs, Jeffrey D.; Tobin, Kenneth W.

    1995-01-01

    A fiber optic vibration sensor utilizes two single mode optical fibers supported by a housing with one optical fiber fixedly secured to the housing and providing a reference signal and the other optical fiber having a free span length subject to vibrational displacement thereof with respect to the housing and the first optical fiber for providing a signal indicative of a measurement of any perturbation of the sensor. Damping or tailoring of the sensor to be responsive to selected levels of perturbation is provided by altering the diameter of optical fibers or by immersing at least a portion of the free span length of the vibration sensing optical fiber into a liquid of a selected viscosity.

  2. Highly Sensitive Electro-Optic Modulators

    SciTech Connect (OSTI)

    DeVore, Peter S

    2015-10-26

    There are very important diagnostic and communication applications that receive faint electrical signals to be transmitted over long distances for capture. Optical links reduce bandwidth and distance restrictions of metal transmission lines; however, such signals are only weakly imprinted onto the optical carrier, resulting in low fidelity transmission. Increasing signal fidelity often necessitates insertion of radio-frequency (RF) amplifiers before the electro-optic modulator, but (especially at high frequencies) RF amplification results in large irreversible distortions. We have investigated the feasibility of a Sensitive and Linear Modulation by Optical Nonlinearity (SALMON) modulator to supersede RF-amplified modulators. SALMON uses cross-phase modulation, a manifestation of the Kerr effect, to enhance the modulation depth of an RF-modulated optical wave. This ultrafast process has the potential to result in less irreversible distortions as compared to a RF-amplified modulator due to the broadband nature of the Kerr effect. Here, we prove that a SALMON modulator is a feasible alternative to an RFamplified modulator, by demonstrating a sensitivity enhancement factor greater than 20 and significantly reduced distortion.

  3. CCD AND PIN-CMOS DEVELOPMENTS FOR LARGE OPTICAL TELESCOPE.

    SciTech Connect (OSTI)

    RADEKA, V.

    2006-04-03

    Higher quantum efficiency in near-IR, narrower point spread function and higher readout speed than with conventional sensors have been receiving increased emphasis in the development of CCDs and silicon PIN-CMOS sensors for use in large optical telescopes. Some key aspects in the development of such devices are reviewed.

  4. RF/optical shared aperture for high availability wideband communication RF/FSO links

    DOE Patents [OSTI]

    Ruggiero, Anthony J; Pao, Hsueh-yuan; Sargis, Paul

    2015-03-24

    An RF/Optical shared aperture is capable of transmitting and receiving optical signals and RF signals simultaneously. This technology enables compact wide bandwidth communications systems with 100% availability in clear air turbulence, rain and fog. The functions of an optical telescope and an RF reflector antenna are combined into a single compact package by installing an RF feed at either of the focal points of a modified Gregorian telescope.

  5. RF/optical shared aperture for high availability wideband communication RF/FSO links

    DOE Patents [OSTI]

    Ruggiero, Anthony J; Pao, Hsueh-yuan; Sargis, Paul

    2014-04-29

    An RF/Optical shared aperture is capable of transmitting and receiving optical signals and RF signals simultaneously. This technology enables compact wide bandwidth communications systems with 100% availability in clear air turbulence, rain and fog. The functions of an optical telescope and an RF reflector antenna are combined into a single compact package by installing an RF feed at either of the focal points of a modified Gregorian telescope.

  6. Sandia's Continuously Recirculating Falling-Particle Receiver Emplaced at

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

    Top of Solar Tower Continuously Recirculating Falling-Particle Receiver Emplaced at Top of Solar Tower - Sandia Energy Energy Search Icon Sandia Home Locations Contact Us Employee Locator Energy & Climate Secure & Sustainable Energy Future Stationary Power Energy Conversion Efficiency Solar Energy Wind Energy Water Power Supercritical CO2 Geothermal Natural Gas Safety, Security & Resilience of the Energy Infrastructure Energy Storage Nuclear Power & Engineering Grid

  7. Sandia's Continuously Recirculating Falling-Particle Receiver Placed Atop

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

    the Solar Tower Continuously Recirculating Falling-Particle Receiver Placed Atop the Solar Tower - Sandia Energy Energy Search Icon Sandia Home Locations Contact Us Employee Locator Energy & Climate Secure & Sustainable Energy Future Stationary Power Energy Conversion Efficiency Solar Energy Wind Energy Water Power Supercritical CO2 Geothermal Natural Gas Safety, Security & Resilience of the Energy Infrastructure Energy Storage Nuclear Power & Engineering Grid Modernization

  8. NETL RESEARCHER RECEIVES AWARD FOR OUTSTANDING INNOVATION IN ENERGY

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

    RECEIVES AWARD FOR OUTSTANDING INNOVATION IN ENERGY Morgantown, W.Va. - The Carnegie Science Center has honored Dr. Shiwoo Lee of the National Energy Technology Laboratory (NETL) with an Outstanding Innovation in Energy Award. Dr. Lee was chosen in recognition of his development of a manufacturing method that significantly improves the efficiency of solid oxide fuel cells (SOFCs)-an efficient, combustion-less, virtually pollution-free power source capable of using fossil fuels. Dr. Lee will

  9. NETL RESEARCHER SHIWOO LEE RECEIVES AWARD FOR ENERGY LEADERSHIP

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

    SHIWOO LEE RECEIVES AWARD FOR ENERGY LEADERSHIP Morgantown, W.Va. - The Pittsburgh Business Times has selected Dr. Shiwoo Lee of the National Energy Technology Laboratory for an Energy in Leadership Award. Dr. Lee was chosen in recognition of his development of a manufacturing method that significantly improves the efficiency of solid oxide fuel cells-a contribution that will help to develop the energy industry in western Pennsylvania in an environmentally responsible way. The Pittsburgh

  10. NETL Researcher Selected to Receive Nation's Highest Award for Young

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

    Researcher Selected to Receive Nation's Highest Award for Young Scientists Pittsburgh, Pa.-Dr. Paul R. Ohodnicki, a materials scientist at the National Energy Technology Laboratory (NETL), has been named by President Obama as a recipient of the Presidential Early Career Award for Scientists and Engineers (PECASE). The PECASE award is the highest honor the U.S. government can bestow on scientists or engineers in the early stages of their research careers. Dr. Ohodnicki was selected for his

  11. NETL'S BARBARA KUTCHKO RECEIVES 2015 ENERGY LEADERSHIP AWARD

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

    BARBARA KUTCHKO RECEIVES 2015 ENERGY LEADERSHIP AWARD Pittsburgh, Pa. - The Pittsburgh Business Times has selected Dr. Barbara Kutchko of the National Energy Technology Laboratory (NETL) for an Energy in Leadership Award. Dr Kutchko was chosen in recognition of her research into foamed wellbore cement and oil and natural gas production in western Pennsylvania-contributions that are helping to developing the energy industry in western Pennsylvania in an environmentally responsible way. The

  12. NREL Receives Numerous Accolades from Industry and DOE - News Releases |

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

    NREL Receives Numerous Accolades from Industry and DOE Lab honored with awards for sustainability; employees recognized for hydrogen, battery R&D November 8, 2012 The U.S. Department of Energy's (DOE)'s National Renewable Energy Laboratory (NREL) and its employees have garnered awards and recognition from industry groups for advancing energy research as well as furthering the lab's sustainable operating practices. Bryan Pivovar Named Charles W. Tobias Young Investigator by the

  13. NREL Researchers Receive Award for Excellence in Technology Transfer

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

    Receive Award for Excellence in Technology Transfer Media may contact: George Douglas, DOE, 303-275-4096 email: George Douglas Golden, Colo., May 10, 2000 - Researchers at the U.S. Department of Energy's National Renewable Energy Laboratory were honored May 10 with a Year 2000 Federal Laboratory Consortium Award for Excellence in Technology Transfer for the advanced direct contact condenser as applied in geothermal power plants. Award recipients are Desikan Bharathan, who developed the condenser

  14. NREL: Transportation Research - NREL and NASA Receive Regional FLC Award

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

    for Notable Technology and NASA Receive Regional FLC Award for Notable Technology August 25, 2016 NASA Johnson Space Center (JSC) and the National Renewable Energy Laboratory (NREL) were selected as 2016 recipients of a Federal Laboratory Consortium (FLC) Mid-Continent Regional Award, for their notable technology development of the patented Battery Internal Short-Circuit (ISC) Device. Members of the FLC selection committee recognize federal laboratories and their industry partners for

  15. Nine receive DOE's Office of Science Graduate Student Research Awards

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

    Graduate Student Research Awards Nine receive DOE's Office of Science Graduate Student Research Awards The program prepares students for careers in science, technology, engineering and math. June 14, 2016 The goal of the SCGSR program is designed to prepare graduate students for science, technology, engineering and mathematics careers, which are critically important to the DOE Office of Science mission, by providing graduate thesis research opportunities at DOE laboratories. The goal of the

  16. Doug Dearolph receives NNSA's Gold Medal of Excellence | National Nuclear

    National Nuclear Security Administration (NNSA)

    Security Administration | (NNSA) Doug Dearolph receives NNSA's Gold Medal of Excellence Tuesday, September 30, 2014 - 11:31am DOE Undersecretary for Nuclear Security and NNSA Administrator Frank Klotz recently presented the Gold Medal of Excellence for Distinguished Service to Doug Dearolph, manager of the Savannah River Field Office. The medal is the highest honorary award granted by NNSA and was presented to Dearolph in recognition his dedication and commitment to public service and the

  17. LLNL scientist receives NNSA award for developing uncrackable code for

    National Nuclear Security Administration (NNSA)

    nuclear weapons | National Nuclear Security Administration | (NNSA) LLNL scientist receives NNSA award for developing uncrackable code for nuclear weapons Thursday, November 20, 2014 - 12:19pm Mark Hart, a scientist and engineer in Lawrence Livermore National Laboratory's Defense Technologies Division, has been awarded the 2015 Surety Transformation Initiative (STI) Award from the NNSA Enhanced Surety Program. The STI award aims to stimulate and encourage the development of potentially

  18. Michael Hickman receives NNSA Gold Medal, announces retirement | National

    National Nuclear Security Administration (NNSA)

    Nuclear Security Administration | (NNSA) Michael Hickman receives NNSA Gold Medal, announces retirement Thursday, May 28, 2015 - 9:21am NNSA's Director of the Office of Enterprise Project Management Michael Hickman has announced that he will be retiring effective May 29, 2015 after 34 years distinguished federal service. As a member of the Senior Executive Service, he has spent approximately 25 of those years in senior leadership positions across DOE and NNSA. In his current capacity,

  19. NNSA Leaders Receive 2015 Presidential Rank Awards | National Nuclear

    National Nuclear Security Administration (NNSA)

    Security Administration | (NNSA) Leaders Receive 2015 Presidential Rank Awards Wednesday, January 27, 2016 - 12:01am Steven Erhart Last month two NNSA Senior Executive Service leaders were recognized as 2015 Presidential Rank Award Winners for distinguished contributions to public service. Director of NNSA's Office of Policy Steven Erhart was named a Distinguished Executive Winner, and Director of Reactor Engineering in NNSA's Naval Reactors Program Thomas G. Vavoso was named a Meritorious

  20. NNSA Receives Secretary's Award for Project Management Excellence |

    National Nuclear Security Administration (NNSA)

    National Nuclear Security Administration | (NNSA) Receives Secretary's Award for Project Management Excellence April 02, 2014 WASHINGTON, D.C. - The National Nuclear Security Administration (NNSA) was recently presented with the Secretary's Award for Project Management Excellence for delivering the Chemistry and Metallurgy Research Building Replacement (CMRR) Radiological Laboratory/Utility/Office Building (RLUOB) Equipment Installation (REI) Project $2 million under budget and ahead of