National Library of Energy BETA

Sample records for top deep br

  1. br Owner br Facility br Type br Capacity br MW br Commercial...

    OpenEI (Open Energy Information) [EERE & EIA]

    Owner br Facility br Type br Capacity br MW br Commercial br Online br Date br Geothermal br Area br Geothermal br Region Coordinates Ahuachapan Geothermal Power Plant LaGeo SA de...

  2. AISI/DOE Technology Roadmap Program: Removal of Residual Elements in The Steel Ladle by a Combination of Top Slag and Deep Injection Practice

    SciTech Connect

    S. Street; K.S. Coley; G.A. Iron

    2001-08-31

    The objective of this work was to determine if tin could be removed from liquid steel by a combination of deep injection of calcium and a reducing top-slag practice. The work was carried out in three stages: injection of Ca wire into 35 Kg heats in an induction furnace under laboratory condition; a fundamental study of the solubility of Sn in the slag as a function of oxygen potential, temperature and slag composition; and, two full-scale plant trials. During the first stage, it was found that 7 to 50% of the Sn was removed from initial Sn contents of 0.1%, using 8 to 16 Kg of calcium per tonne of steel. The Sn solubility study suggested that low oxygen potential, high basicity of the slag and lower temperature would aid Sn removal by deep injection of Ca in the bath. However, two full-scale trials at the LMF station in Dofasco's plant showed virtually no Sn removal, mainly because of very low Ca consumption rates used (0.5 to 1.1 Kg/tonne vs. 8 to 16 Kg/tonne used during the induction furnace study in the laboratory). Based on the current price of Ca, addition of 8 to 16 Kg/tonne of steel to remove Sn is too cost prohibitive, and therefore, it is not worthwhile to pursue this process further, even though it may be technically feasible.

  3. Jatropha BR | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    BR Jump to: navigation, search Name: Jatropha BR Place: Brazil Product: Brazilian-based consortium of five leading Brazilian companies engaged in the integrated jatropha curcas...

  4. Top physics at CDF

    SciTech Connect

    Julia Thom

    2004-06-24

    Precision studies of top quark properties are a primary goal of the Run II physics program at the Fermilab Tevatron. Marking the first stages of this program, the CDF collaboration presents recent results on top pair production cross section, single top physics and top mass, using between 109 and 200 pb{sup -1} of Run II data.

  5. Photoinduced Br Desorption from CsBr Thin Films Grown on Cu(100)

    SciTech Connect

    Halliday, Matthew T.; Joly, Alan G.; Hess, Wayne P.; Shluger, AL

    2015-10-22

    Thin films of CsBr deposited onto metals such as copper are potential photocathode materials for light sources and other applications. We investigate desorption dynamics of Br atoms from CsBr films grown on insulator (KBr, LiF) and metal (Cu) substrates induced by sub-bandgap 6.4 eV laser pulses. The experimental results demonstrate that the peak kinetic energy of Br atoms desorbed from CsBr/Cu films is much lower than that for the hyperthermal desorption from CsBr/LiF films. Kelvin probe measurements indicate negative charge at the surface following Br desorption from CsBr/Cu films. Our ab initio calculations of excitons at CsBr surfaces demonstrate that this behavior can be explained by an exciton model of desorption including electron trapping at the CsBr surface. Trapped negative charges reduce the energy of surface excitons available for Br desorption. We examine the electron-trapping characteristics of low-coordinated sites at the surface, in particular, divacancies and kink sites. We also provide a model of cation desorption caused by Franck-Hertz excitation of F centers at the surface in the course of irradiation of CsBr/Cu films. These results provide new insights into the mechanisms of photoinduced structural evolution of alkali halide films on metal substrates and activation of metal photocathodes coated with CsBr.

  6. Top Innovations 2012

    Energy.gov [DOE]

    On this page, you will find Building America's Top Innovations from 1995 through 2012, with links to a profile describing each innovation. Note that some categories may not have a top innovation...

  7. Top NAICS Codes

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Business opportunities » Top NAICS Codes Top NAICS Codes Below is a current listing of the top NAICS codes by volume and dollar value Contact Small Business Office 505-667-4419 Email Top Ten NAICS Codes Volume 339999 All Other Miscellaneous Manufacturing 339940 Office Supplies (except Paper) Manufacturing 339113 Surgical Appliance and Supplies Manufacturing 334118 Computer Terminal and Other Computer Peripheral Equipment Manufacturing 334220 Radio and Television Broadcasting and Wireless

  8. CDF Top Physics

    DOE R&D Accomplishments

    Tartarelli, G. F.; CDF Collaboration

    1996-05-01

    The authors present the latest results about top physics obtained by the CDF experiment at the Fermilab Tevatron collider. The data sample used for these analysis (about 110 pb{sup{minus}1}) represents almost the entire statistics collected by CDF during four years (1992--95) of data taking. This large data size has allowed detailed studies of top production and decay properties. The results discussed here include the determination of the top quark mass, the measurement of the production cross section, the study of the kinematics of the top events and a look at top decays.

  9. Top Physics at CDF

    SciTech Connect

    Moon, Chang-Seong

    2011-06-01

    We present the recent results of top-quark physics using up to 6 fb{sup -1} of p{bar p} collisions at a center of mass energy of {radical}s = 1.96 TeV analyzed by the CDF collaboration. Thanks to this large data sample, precision top quark measurements are now a reality at the Tevatron. Further, several new physics signals could appear in this large dataset. We will present the latest measurements of top quark intrinsic properties as well as direct searches for new physics in the top sector.

  10. Top Science of 2013

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Liquid-scanning technology boosts airport security science-innovationassetsimagesicon-science.jpg Top Science of 2013 Our strong interdisciplinary teaming and unique research...

  11. STIMULATION TECHNOLOGIES FOR DEEP WELL COMPLETIONS

    SciTech Connect

    Stephen Wolhart

    2003-06-01

    The Department of Energy (DOE) is sponsoring a Deep Trek Program targeted at improving the economics of drilling and completing deep gas wells. Under the DOE program, Pinnacle Technologies is conducting a project to evaluate the stimulation of deep wells. The objective of the project is to assess U.S. deep well drilling & stimulation activity, review rock mechanics & fracture growth in deep, high pressure/temperature wells and evaluate stimulation technology in several key deep plays. Phase 1 was recently completed and consisted of assessing deep gas well drilling activity (1995-2007) and an industry survey on deep gas well stimulation practices by region. Of the 29,000 oil, gas and dry holes drilled in 2002, about 300 were drilled in the deep well; 25% were dry, 50% were high temperature/high pressure completions and 25% were simply deep completions. South Texas has about 30% of these wells, Oklahoma 20%, Gulf of Mexico Shelf 15% and the Gulf Coast about 15%. The Rockies represent only 2% of deep drilling. Of the 60 operators who drill deep and HTHP wells, the top 20 drill almost 80% of the wells. Six operators drill half the U.S. deep wells. Deep drilling peaked at 425 wells in 1998 and fell to 250 in 1999. Drilling is expected to rise through 2004 after which drilling should cycle down as overall drilling declines.

  12. Top Science of 2013

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Department of Energy Top EM Leadership to Participate in 2016 National Cleanup Workshop Top EM Leadership to Participate in 2016 National Cleanup Workshop March 9, 2016 - 12:00pm Addthis Top EM Leadership to Participate in 2016 National Cleanup Workshop WASHINGTON, D.C. - EM's senior leaders are set to join the 2016 National Cleanup Workshop in mid-September in the Washington, D.C.-area. The nuclear cleanup program's leaders scheduled to take part in the workshop include Assistant Secretary

  13. Top quark mass measurements

    SciTech Connect

    Hill, Christopher S.; /UC, Santa Barbara

    2004-12-01

    The top quark, with its extraordinarily large mass (nearly that of a gold atom), plays a significant role in the phenomenology of EWSB in the Standard Model. In particular, the top quark mass when combined with the W mass constrains the mass of the as yet unobserved Higgs boson. Thus, a precise determination of the mass of the top quark is a principal goal of the CDF and D0 experiments. With the data collected thus far in Runs 1 and 2 of the Tevatron, CDF and D0 have measured the top quark mass in both the lepton+jets and dilepton decay channels using a variety of complementary experimental techniques. The author presents an overview of the most recent of the measurements.

  14. Top physics: CDF results

    SciTech Connect

    K. Bloom

    2004-06-23

    The top quark plays an important role in the grand scheme of particle physics, and is also interesting on its own merits. We present recent results from CDF on top-quark physics based on 100-200 pb{sup -1} of p{bar p} collision data. We have measured the t{bar t} cross section in different decay modes using several different techniques, and are beginning our studies of top-quark properties. New analyses for this conference include a measurement of {sigma}{sub t{bar t}} in the lepton-plus-jets channel using a neural net to distinguish signal and background events, and measurements of top-quark branching fractions.

  15. Single Top Quark

    SciTech Connect

    Heidi Schellman and Ann Heinson

    2009-03-12

    Fermilab researchers Heidi Schellman and Ann Heinson take a whimsical look at the recent announcement of the discovery of the single top quark, by Fermilab's CDF and DZero experiments.

  16. Top Science of 2013

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Roadrunner firsts pave way for greener, faster supercomputing Top Science of 2013 Our strong interdisciplinary teaming and unique research facilities allow us to develop solutions to complex problems, and to support partners and collaborators, all with the goal of strengthening national security and making a safer world. Roadrunner firsts pave way for more powerful supercomputing placeholder Roadrunner hit the petaflop barrier a few years ago, topping supercomputer lists for years for its power

  17. BR UFF BIG PINEY WILD ROSE BLU E GAP BR UFF UNIT WAMSUT TER

    Energy Information Administration (EIA) (indexed site)

    BIG PINEY TIP TOP BIR D CANYON SWAN FONTEN ELL E LABARGE HOGSBACK CHIMNEY BUT TE BIG PINEY AREA TIP TOP UNI T LINCOLN ROAD BLU E FOREST DEER HILL FOGART Y CREEK GREEN RIVER BEND ...

  18. Deep Lysimeter

    DOEpatents

    Hubbell, Joel M.; Sisson, James B.

    2004-06-01

    A deep lysimeter including a hollow vessel having a chamber, a fill conduit extending into the chamber through apertures, a semi-permeable member mounted on the vessel and in fluid communication with the fill conduit, and a line connection for retrieving the lysimeter.

  19. Crystal structure, electronic structure, temperature-dependent optical and scintillation properties of CsCe2Br7

    DOE PAGES [OSTI]

    Wu, Yuntao; Shi, Hongliang; Chakoumakos, Bryan C.; Zhuravleva, Mariya; Du, Mao-Hua; Melcher, Charles L.

    2015-10-05

    CsCe2Br7 is a self-activated inorganic scintillator that shows promising performance, but the understanding of the important structure-property relationships is lacking. In this work, we conduct a comprehensive study on CCsCe2Br7. The crystal structure of CsCe2Br7 is refined using single crystal X-ray study for the first time. It crystallizes into the orthorhombic crystal system with Pmnb space group. Its electronic structure is revealed by Density Functional Theory (DFT) calculations. Two cerium emission centers are identified and the energy barriers related to the thermal quenching to 4f ground states of Ce3+ for these two Ce centers are evaluated. CsCe2Br7 single crystal hasmore » better light yield and energy resolution than CsCe2Cl7, but with an additional slow decay component of 1.7 s. The existence of a deep trap with a depth of 0.9 eV in CsCe2Cl7 contributes to its higher afterglow level in comparison to that of CsCe2Br7. The most possible point defects in CsCe2Cl7 and CsCe2Br7 are proposed by considering the vapour pressure in the growth atmosphere upon melting point.« less

  20. PAGE Cover: Top Photo

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    PAGE Cover: Top Photo Energy Sciences Building. Elevation of the recently completed Energy Sciences Building (ESB) project at Argonne National Laboratory in Lemont, Illinois. The ESB was a capital line-item project funded by the Science Laboratories Infrastructure program at a total cost of $96 million and was completed on August 6, 2014. The ESB project provided 173,000 gross square feet of interdisciplinary research and collaborative space to accommodate a range of physical sciences research

  1. Top Science of 2013

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    ChemCam to see if Mars can support life, manned missions Top Science of 2013 Our strong interdisciplinary teaming and unique research facilities allow us to develop solutions to complex problems, and to support partners and collaborators, all with the goal of strengthening national security and making a safer world. ChemCam inpsects Mars: can it support life? placeholder ChemChem's instrumentation aboard the Mars Science Lab's rover Curiosity has made all sorts of discoveries. ChemCam found

  2. Top Science of 2013

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Liquid-scanning technology boosts airport security Top Science of 2013 Our strong interdisciplinary teaming and unique research facilities allow us to develop solutions to complex problems, and to support partners and collaborators, all with the goal of strengthening national security and making a safer world. Liquid-scanning technology boosts airport security placeholder Uniquely combining Magnetic Resonance Imaging (MRI) and X-ray technology, scientists unlocked new threat technology that

  3. Top Science of 2013

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    RAPTOR telescope witnesses black hole birth Top Science of 2013 Our strong interdisciplinary teaming and unique research facilities allow us to develop solutions to complex problems, and to support partners and collaborators, all with the goal of strengthening national security and making a safer world. RAPTOR telescope witnesses black hole birth placeholder The first "thinking telescope" RAPTOR found the birth of big black holes, possibly the most powerful events since the big bang.

  4. Top Science of 2013

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Space probes predict hazards to protect spacecraft Top Science of 2013 Our strong interdisciplinary teaming and unique research facilities allow us to develop solutions to complex problems, and to support partners and collaborators, all with the goal of strengthening national security and making a safer world. Space probes predict hazards to protect spacecraft placeholder Researchers think they've solved a 50-year-old space mystery about how electrons within the Van Allen radiation belts that

  5. X-ray absorption studies of mixed salt polymer electrolytes: ZnBr{sub 2}/CaBr{sub 2}-PEO, ZnBr{sub 2}/LiBr-PEO, and ZnBr{sub 2}/RbBr-PEO complexes

    SciTech Connect

    McBreen, J.; Yang, X.Q.; Lee, H.S.; Okamoto, Y.

    1995-02-01

    Polyethylene oxide (PEO)-salt systems are an important new class of electrolytes that are being considered for many uses. X-ray absorption (XAS) studies of ZnBr{sub 2}-PEO complexes, at the Zn K edge, at temperatures between 25 and 120 C, indicate that additions of bromide salts of Li, Rb, or Ca result in the formation of ZnBr{sub 4}{sup {minus} 2} complexes with a Zn-Br bond length of 2.42 {angstrom}. XAS, at the Rb K edge, in mixed RbBr/ZnBr{sub 2}-PEO complexes with an excess of ZnBr{sub 2}, shows that the ZnBr{sub 2} causes the RbBr to dissolve in the polymer. The Rb{sup +} ions are weakly complexed with the PEO with an Rb-O bond distance of 2.93 {angstrom}.

  6. Top Ten Innovations of 2013

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Top Ten Innovations of 2013 Our featurres embrace complex issues around our science, technologies, and mission in a series of mini-articles that provide a context for our historical approach, current problem solving and our vision for the future. Faces of Science 70 Years of Innovations 50 Years of Space LANL Top Science 2014 Top Ten Innovations of 2013 Energy Sustainability Radical Supercomputing Science Digests TOP INNOVATIONS OF 2013 Science and technology for a secure nation Impenetrable

  7. Top physics results at CDF

    SciTech Connect

    Vickey, Trevor; /Illinois U., Urbana

    2005-05-01

    The most recent results on top quark physics at CDF are reported. Measurements of cross-section and mass are presented, and the status of single top quark production searches are discussed. The results obtained from probing various top quark properties are also presented.

  8. Top quark mass measurements

    SciTech Connect

    L. Cerrito

    2004-07-16

    Preliminary results on the measurement of the top quark mass at the Tevatron Collider are presented. In the dilepton decay channel, the CDF Collaboration measures m{sub t} = 175.0{sub -16.9}{sup +17.4}(stat.){+-}8.4(syst.) GeV/c{sup 2}, using a sample of {approx} 126 pb{sup -1} of proton-antiproton collision data at {radical}s = 1.96 TeV (Run II). In the lepton plus jets channel, the CDF Collaboration measures 177.5{sub -9.4}{sup +12.7}(stat.) {+-} 7.1(syst.) GeV/c{sup 2}, using a sample of {approx} 102 pb{sup -1} at {radical}s = 1.96 TeV. The D0 Collaboration has newly applied a likelihood technique to improve the analysis of {approx} 125 pb{sup -1} of proton-antiproton collisions at {radical}s = 1.8 TeV (Run I), with the result: m{sub t} = 180.1 {+-} 3.6(stat.) {+-}3.9(syst.) GeV/c{sup 2}. The latter is combined with all the measurements based on the data collected in Run I to yield the most recent and comprehensive experimental determination of the top quark mass: m{sub t} = 178.0 {+-} 2.7(stat.) {+-} 3.3(syst.) GeV/c{sup 2}.

  9. Furnace Blower Performance Improvements - Building America Top...

    Energy.gov [DOE] (indexed site)

    Researchers at Lawrence Berkeley National Laboratory (LBNL) garnered a 2013 Top Innovation ... Read about this Top Innovation. See an example of this Top Innovation in action. Find more ...

  10. Building America Top Innovations | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Research Building America Top Innovations Building America Top Innovations New Top Innovations are awarded annually for outstanding Building America research achievements. Each ...

  11. Top physics results from CDF

    SciTech Connect

    Gomez, Gervasio; /Cantabria Inst. of Phys.

    2005-05-01

    The top quark is by far the most massive fundamental particle observed so far, and the study of its properties is interesting for several reasons ranging from its possible special role in electroweak symmetry breaking to its sensitivity to physics beyond the Standard Model. They present recent top physics results from CDF based on 160-320 pb{sup -1} of p{bar p} collision data at {radical}s = 1.96 TeV. The t{bar t} cross section and the top mass have been measured in different decay channels and using different methods. they have searched for evidence of single top production, setting upper limits on its production rate. Other results shown in this conference include studies of the polarization of W bosons from top decays, a search for charged Higgs decaying from top, and a search for additional heavy t' quarks.

  12. High energy XeBr electric discharge laser

    DOEpatents

    Sze, Robert C.; Scott, Peter B.

    1981-01-01

    A high energy XeBr laser for producing coherent radiation at 282 nm. The XeBr laser utilizes an electric discharge as the excitation source to minimize formation of molecular ions thereby minimizing absorption of laser radiation by the active medium. Additionally, HBr is used as the halogen donor which undergoes harpooning reactions with Xe.sub.M * to form XeBr*.

  13. High energy XeBr electric discharge laser

    DOEpatents

    Sze, R.C.; Scott, P.B.

    A high energy XeBr laser for producing coherent radiation at 282 nm is disclosed. The XeBr laser utilizes an electric discharge as the excitation source to minimize formation of molecular ions thereby minimizing absorption of laser radiation by the active medium. Additionally, HBr, is used as the halogen donor which undergoes harpooning reactions with Xe/sub M/ to form XeBr.

  14. Top Science News of 2014

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Top Science News of 2014 Top Science News of 2014 Biosurveillance, secure computing, alternative energy, unique capabilities highlight the year December 22, 2014 Top Science News of 2014 Biosurveillance, secure computing, alternative energy, unique capabilities highlight the year. Contact Communications Office "The breadth of scientific expertise and range of disciplines necessary for supporting Los Alamos's national security mission can be seen when reflecting on some of the year's more

  15. WIPP Receives Top Safety Award

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Waste Isolation Pilot Plant (WIPP) received top accolades from New Mexico's leading mining ... contractor, for receiving the New Mexico Mining Association (NMMA) and New Mexico BMS ...

  16. BR UFF BIG PINEY WILD ROSE BLU E GAP BR UFF UNIT WAMSUT TER

    Gasoline and Diesel Fuel Update

    CHIMNEY BUT TE BIG PINEY AREA TIP TOP UNI T LINCOLN ROAD BLU E FOREST DEER HILL FOGART Y ... TUR TLE HILL ZIEGLER S WASH BLAC K JACK LINCOLN ROAD ST ANDARD DRAW RATT LESN AKEWY AN ...

  17. BR UFF BIG PINEY WILD ROSE BLU E GAP BR UFF UNIT WAMSUT TER

    Annual Energy Outlook

    The boundaries are not informed by subsurface structural information. The data and methods ... BIG PINEY TIP TOP BIR D CANYON SWAN FONTEN ELL E LABARGE HOGSBACK CHIMNEY BUT TE BIG PINEY ...

  18. Limiting Factors for Convective Cloud Top Height in the Tropics

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Limiting Factors for Convective Cloud Top Height in the Tropics M. P. Jensen and A. D. Del Genio National Aeronautics and Space Administration Goddard Institute for Space Studies Columbia University New York, New York Introduction Populations of tropical convective clouds are mainly comprised of three types: shallow trade cumulus, mid-level cumulus congestus and deep convective clouds (Johnson et al. 1999). Each of these cloud types has different impacts on the local radiation and water budgets.

  19. Status of the top quark: Top production cross section and top properties

    SciTech Connect

    Boisvert, V.; /Rochester U.

    2006-08-01

    This report describes the latest cross section and property measurements associated with the top quark at the Tevatron Run II. The largest data sample used is 760 pb{sup -1} of integrated luminosity. Due to its large mass, the top quark might be involved in the process of electroweak symmetry breaking, making it a useful probe for signs of new physics.

  20. Improved production of Br atoms near zero speed by photodissociating laser aligned Br{sub 2} molecules

    SciTech Connect

    Deng, L. Z., E-mail: lzdeng@phy.ecnu.edu.cn; Yin, J. P., E-mail: jpyin@phy.ecnu.edu.cn [State Key Laboratory of Precision Spectroscopy, Department of Physics, East China Normal University, Shanghai 200062 (China)

    2014-10-28

    We theoretically investigated the improvement on the production rate of the decelerated bromine (Br) atoms near zero speed by photodissociating laser aligned Br{sub 2} precursors. Adiabatic alignment of Br{sub 2} precursors exposed to long laser pulses with duration on the order of nanoseconds was investigated by solving the time-dependent Schrdinger equation. The dynamical fragmentation of adiabatically aligned Br{sub 2} precursors was simulated and velocity distribution of the Br atoms produced was analyzed. Our study shows that the larger the degree of the precursor alignment, ?cos{sup 2}???, the higher the production rate of the decelerated Br atoms near zero speed. For Br{sub 2} molecules with an initial rotational temperature of ?1 K, a ?cos{sup 2}??? value of ?0.88 can result in an improvement factor of over ?20 on the production rate of the decelerated Br atoms near zero speed, requiring a laser intensity of only ?1 10{sup 12} W/cm{sup 2} for alignment.

  1. Los Alamos National Laboratory top

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    top science news of 2012 December 20, 2012 Scientific advances that caught the world's interest LOS ALAMOS, NEW MEXICO, December 20, 2012-In 2012 Los Alamos National Laboratory made its scientific mark in a wide variety of areas, and the stories that caught the public's attention and that of the science community reflect those broad capabilities. Top science stories for the year traveled from the canyons of Mars to the high desert forests of New Mexico, from cosmic particles to the structure of

  2. Uncovering the single top: observation of electroweak top quark production

    SciTech Connect

    Benitez, Jorge Armando; /Michigan State U.

    2009-08-01

    The top quark is generally produced in quark and anti-quark pairs. However, the Standard Model also predicts the production of only one top quark which is mediated by the electroweak interaction, known as 'Single Top'. Single Top quark production is important because it provides a unique and direct way to measure the CKM matrix element V{sub tb}, and can be used to explore physics possibilities beyond the Standard Model predictions. This dissertation presents the results of the observation of Single Top using 2.3 fb{sup -1} of Data collected with the D0 detector at the Fermilab Tevatron collider. The analysis includes the Single Top muon+jets and electron+jets final states and employs Boosted Decision Tress as a method to separate the signal from the background. The resulting Single Top cross section measurement is: (1) {sigma}(p{bar p} {yields} tb + X, tqb + X) = 3.74{sub -0.74}{sup +0.95} pb, where the errors include both statistical and systematic uncertainties. The probability to measure a cross section at this value or higher in the absence of signal is p = 1.9 x 10{sup -6}. This corresponds to a standard deviation Gaussian equivalence of 4.6. When combining this result with two other analysis methods, the resulting cross section measurement is: (2) {sigma}(p{bar p} {yields} tb + X, tqb + X) = 3.94 {+-} 0.88 pb, and the corresponding measurement significance is 5.0 standard deviations.

  3. Characterization of high-voltage cathodes in CsBr-LiBr-KBr eutectic electrolyte

    SciTech Connect

    GUIDOTTI,RONALD A.; REINHARDT,FREDERICK W.

    2000-04-20

    The transition-metal oxides LiMn{sub 2}O{sub 4}, MnO{sub 2}, CrO{sub 2}, and LiCoO{sub 2} were evaluated for possible use as high-voltage cathodes for potential geothermal power applications. These were coupled with Li(Si) anodes and a low-melting CsBr-LiBr-KBr eutectic electrolyte that melts at 228.5 C. Single-cell tests at 250 C and 300 C at 15.8 and 31.6 mA/cm{sup 2} showed that MnO{sub 2} performed the best overall and had the lowest polarization. A 5-cell battery test using LiMn{sub 2}O{sub 4} cathodes was only modestly successful due to possible parasitic chemical reactions between the cathode and electrolyte at the much higher temperature (500 C) during discharge. The overall energy densities for these cathode were still less than for FeS{sub 2}.

  4. SW New Mexico Oil Well Formation Tops

    SciTech Connect

    Shari Kelley

    2015-10-21

    Rock formation top picks from oil wells from southwestern New Mexico from scout cards and other sources. There are differing formation tops interpretations for some wells, so for those wells duplicate formation top data are presented in this file.

  5. GreenTops | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    GreenTops Jump to: navigation, search Name: GreenTops Place: Israel Product: Israel-based assemblers of PV-modules mainly for the agricultural comunity. References: GreenTops1...

  6. TOP500 | National Nuclear Security Administration

    National Nuclear Security Administration (NNSA)

    Our Jobs Working at NNSA Blog Home TOP500 TOP500 Two of the World's Most Powerful Computers work for NNSA Two NNSA supercomputers-Trinity and Sequoia-are among the top six...

  7. Final TOPS Rpt-10pt.PDF

    Energy.gov [DOE] (indexed site)

    OPPORTUNITIES TO INCREASE THE PROLIFERATION RESISTANCE OF GLOBAL CIVILIAN NUCLEAR POWER SYSTEMS (TOPS) REPORT BY THE TOPS TASK FORCE OF THE NUCLEAR ENERGY RESEARCH...

  8. Press Pass - Press Release - Single top quark

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Graphics and photos are available at: http:www.fnal.govpubpresspassimagesSingle-Top-Quark-2009.html Fermilab collider experiments discover rare single top quark Batavia, ...

  9. Unvented, Conditioned Attics - Building America Top Innovation...

    Energy.gov [DOE] (indexed site)

    This Top Innovation award demonstrates Building America research from Building Science ... influence code acceptance of this innovation since 2006. Read about this Top Innovation. ...

  10. Basement Insulation Systems - Building America Top Innovation...

    Energy Saver

    Basement Insulation Systems - Building America Top Innovation Basement Insulation Systems - Building America Top Innovation This photo shows a framed basement wall with insulation ...

  11. Vapor Retarder Classification - Building America Top Innovation...

    Energy Saver

    Vapor Retarder Classification - Building America Top Innovation Vapor Retarder Classification - Building America Top Innovation Photo of a vapor retarder classification. Air-tight ...

  12. Preliminary upper limit on BR(D{sup {+-}}{r_arrow}{pi}{sup {...

    Office of Scientific and Technical Information (OSTI)

    Preliminary upper limit on BR(Dsup +-rarrowpisup +-musup +musup -) Citation Details In-Document Search Title: Preliminary upper limit on BR(Dsup ...

  13. Ca2+-Doped CeBr3 Scintillating Materials

    SciTech Connect

    Guss, Paul; Foster, Michael E.; Wong, Bryan M.; Doty, F. Patrick; Shah, Kanai; Squillante, Michael R.; Shirwadkar, Urmila; Hawrami, Rastgo; Tower, Josh; Yuan, Ding

    2014-01-21

    Despite the outstanding scintillation performance characteristics of cerium tribromide (CeBr3) and cerium-activated lanthanum tribromide, their commercial availability and application are limited due to the difficulties of growing large, crack-free single crystals from these fragile materials. This investigation employed aliovalent doping to increase crystal strength while maintaining the optical properties of the crystal. One divalent dopant (Ca2+) was used as a dopant to strengthen CeBr3 without negatively impacting scintillation performance. Ingots containing nominal concentrations of 1.9% of the Ca2+ dopant were grown. Preliminary scintillation measurements are presented for this aliovalently doped scintillator. Ca2+-doped CeBr3 exhibited little or no change in the peak fluorescence emission for 371 nm optical excitation for CeBr3. The structural, electronic, and optical properties of CeBr3 crystals were studied using the density functional theory within the generalized gradient approximation. The calculated lattice parameters are in good agreement with the experimental data. The energy band structures and density of states were obtained. The optical properties of CeBr3, including the dielectric function, were calculated.

  14. Deep Web video

    SciTech Connect

    None Available

    2009-06-01

    To make the web work better for science, OSTI has developed state-of-the-art technologies and services including a deep web search capability. The deep web includes content in searchable databases available to web users but not accessible by popular search engines, such as Google. This video provides an introduction to the deep web search engine.

  15. Deep Web video

    ScienceCinema

    None Available

    2012-03-28

    To make the web work better for science, OSTI has developed state-of-the-art technologies and services including a deep web search capability. The deep web includes content in searchable databases available to web users but not accessible by popular search engines, such as Google. This video provides an introduction to the deep web search engine.

  16. Observation of the Top Quark

    DOE R&D Accomplishments

    Kim, S. B.

    1995-08-01

    Top quark production is observed in{bar p}p collisions at{radical}s= 1.8 TeV at the Fermilab Tevatron. The Collider Detector at Fermilab (CDF) and D{O} observe signals consistent with t{bar t} to WWb{bar b}, but inconsistent with the background prediction by 4.8{sigma} (CDF), 4.6a (D{O}). Additional evidence for the top quark Is provided by a peak in the reconstructed mass distribution. The kinematic properties of the excess events are consistent with the top quark decay. They measure the top quark mass to be 176{plus_minus}8(stat.){plus_minus}10(sys.) GeV/c{sup 2} (CDF), 199{sub -21}{sup+19}(stat.){plus_minus}22(sys.) GeV/c{sup 2} (D{O}), and the t{bar t} production cross section to be 6.8{sub -2.4}{sup+3.6}pb (CDF), 6.4{plus_minus}2.2 pb (D{O}).

  17. Photoelectron Emission Studies in CsBr at 257 nm

    SciTech Connect

    Maldonado, Juan R.; Liu, Zhi; Sun, Yun; Pianetta, Piero A.; Pease, Fabian W.; /Stanford U., Elect. Eng. Dept. /SLAC, SSRL

    2006-09-28

    CsBr/Cr photocathodes were found [1,2] to meet the requirements of a multi-electron beam lithography system operating with a light energy of 4.8 eV (257nm). The fact that photoemission was observed with a light energy below the reported 7.3 eV band gap for CsBr was not understood. This paper presents experimental results on the presence of intra-band gap absorption sites (IBAS) in CsBr thin film photo electron emitters, and presents a model based on IBAS to explain the observed photoelectron emission behavior at energies below band gap. A fluorescence band centered at 330 nm with a FWHM of about 0.34 eV was observed in CsBr/Cr samples under 257 nm laser illumination which can be attributed to IBAS and agrees well with previously obtained synchrotron photoelectron spectra[1] from the valence band of CsBr films.

  18. Top decays in extended models

    SciTech Connect

    Gaitan, R.; Miranda, O. G.; Cabral-Rosetti, L. G.

    2009-04-20

    Top quark decays are interesting as a mean to test the Standard Model (SM) predictions. The Cabbibo-Kobayashi-Maskawa (CKM)-suppressed process t{yields}cWW, and the rare decays t{yields}cZ, t{yields}H{sup 0}+c, and t{yields}c{gamma} an excellent window to probe the predictions of theories beyond the SM. We evaluate the flavor changing neutral currents (FCNC) decay t{yields}H{sup 0}+c in the context of Alternative Left-Right symmetric Models (ALRM) with extra isosinglet heavy fermions; the FCNC decays may place at tree level and are only supressed by the mixing between ordinary top and charm quarks. We also comment on the decay process t{yields}c+{gamma}, which involves radiative corrections.

  19. Top Innovative Science of 2013

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Natural Gas Glossary › FAQS › Overview Data Summary Prices Exploration & reserves Production Imports/exports Pipelines Storage Consumption All natural gas data reports Analysis & Projections Major Topics Most popular Consumption Exploration & reserves Imports/exports & pipelines Prices Production Projections Recurring Storage All reports Browse by Tag Alphabetical Frequency Tag Cloud Supplement from: U.S. Crude Oil and Natural Gas Proved Reserves Top 100 U.S. Oil and Gas

  20. Measurements of Top Quark Properties

    SciTech Connect

    Cerrito, Lucio

    2009-05-01

    Preliminary results on the measurement of four selected properties of the top quark are presented. The relative fraction of t{bar t} production through gluon fusion has been measured in the t{bar t} dilepton decay channel by the CDF Collaboration as F{sub gg} = 0.53{sub -0.38}{sup +0.36}. Using an integrated luminosity of 2.7 fb{sup -1} collected with the CDF II detector, we also determine the t{bar t} differential cross section with respect to values up to {approx}1 TeV of the t{bar t} invariant mass. We present a model-independent measurement of the helicity of W bosons produced in top quark decays, using an integrated luminosity of up to 2.7 fb{sup -1} collected by the D0 detector, and find the fraction of longitudinal W bosons f{sub 0} = 0.49 {+-} 0.14, and the fraction of right-handed W bosons f{sub +} = 0.11 {+-} 0.08. Finally, we measure the parton level forward-backward asymmetry of pair produced top quarks using an integrated luminosity of 3.2 fb{sup -1} collected with the CDF II detector, and find A{sub FB} = 0.19 {+-} 0.07. All results are consistent with the predictions of the standard model.

  1. Decommissioning of the BR3 reactor: status and perspectives

    SciTech Connect

    Noynaert, L.; Verstraeten, I.

    2007-07-01

    The BR3 plant at Mol in Belgium built at the end of the fifties was the first PWR plant built outside the USA. The reactor had a small net power output (10 MWe) but comprised all the loops and features of a commercial PWR plant. The BR3 plant was operated with the main objective of testing advanced PWR fuels under irradiation conditions similar to those encountered in large commercial PWR plants. The reactor was started in 1962 and shut down in 1987 after 25 years of continuous operation. Since 1989, SCK.CEN is decommissioning the BR3 PWR research reactor. The dismantling of the metallic components including reactor pressure vessel and internals is completed and extensively reported in the literature. The dismantling of auxiliary components and the decontamination of parts of the infrastructure are now going on. The decommissioning progress is continuously monitored and costs and strategy are regularly reassessed. The first part of the paper describes the main results and lessons learned from the reassessment exercises performed in 1994, 1999, 2004 and 2007. Impacts of changes in legal framework on the decommissioning costs will be addressed. These changes concern e.g. licensing aspects, clearance levels, waste management... The middle part of the paper discusses the management of activated and/or contaminated concrete. The costing exercise performed in 1995 highlighted that the management of activated and contaminated concrete is the second main cost item after the dismantling of the reactor pressure vessel and internals. Different possible solutions were studied. These are evacuation as radioactive waste with or without supercompaction, recycling this 'radioactive' grout or concrete for conditioning of radioactive waste e.g. conditioning of metallic waste. The paper will give the results of the cost-benefit analysis made to select the solution retained. The last part of the paper will discuss the end goal of the decommissioning of the BR3. In the final

  2. Supercomputing Challenge top winners: Los Alamos schools

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Supercomputing Challenge top winners: Los Alamos schools Supercomputing Challenge top winners: Los Alamos schools Cole Kendrick won the top prize for his research project, "Computer Simulation of Dark Matter Effects on Galaxy Rotation". April 26, 2011 Cole Kendrick Cole Kendrick Contact Steve Sandoval Communications Office (505) 665-9206 Email LOS ALAMOS, New Mexico, April 26, 2011-Los Alamos Middle School student Cole Kendrick won the top prize in the 21st New Mexico Supercomputing

  3. Materials Technologies: Goals, Strategies, and Top Accomplishments

    SciTech Connect

    2010-08-02

    Fact sheet describing the goals, strategies, and top accomplishments of the Materials Technologies subprogram of the Vehicle Technologies Program.

  4. Bullseye: Top Strategies for Targeted Marketing (101)

    Office of Energy Efficiency and Renewable Energy (EERE)

    Better Buildings Residential Network Peer Exchange Call Series: Bullseye: Top Strategies for Targeted Marketing (101), call slides and discussion summary.

  5. Table-top job analysis

    SciTech Connect

    Not Available

    1994-12-01

    The purpose of this Handbook is to establish general training program guidelines for training personnel in developing training for operation, maintenance, and technical support personnel at Department of Energy (DOE) nuclear facilities. TTJA is not the only method of job analysis; however, when conducted properly TTJA can be cost effective, efficient, and self-validating, and represents an effective method of defining job requirements. The table-top job analysis is suggested in the DOE Training Accreditation Program manuals as an acceptable alternative to traditional methods of analyzing job requirements. DOE 5480-20A strongly endorses and recommends it as the preferred method for analyzing jobs for positions addressed by the Order.

  6. MHD Integrated Topping Cycle Project

    SciTech Connect

    Not Available

    1992-07-01

    This eighteenth quarterly technical progress report of the MHD Integrated Topping cycle Project presents the accomplishments during the period November 1, 1991 to January 31, 1992. The precombustor is fully assembled. Manufacturing of all slagging stage components has been completed. All cooling panels were welded in place and the panel/shell gap was filled with RTV. Final combustor assembly is in progress. The low pressure cooling subsystem (LPCS) was delivered to the CDIF. Second stage brazing issues were resolved. The construction of the two anode power cabinets was completed.

  7. MHD Integrated Topping Cycle Project

    SciTech Connect

    Not Available

    1992-03-01

    The Magnetohydrodynamics (MHD) Integrated Topping Cycle (ITC) Project represents the culmination of the proof-of-concept (POC) development stage in the US Department of Energy (DOE) program to advance MHD technology to early commercial development stage utility power applications. The project is a joint effort, combining the skills of three topping cycle component developers: TRW, Avco/TDS, and Westinghouse. TRW, the prime contractor and system integrator, is responsible for the 50 thermal megawatt (50 MW{sub t}) slagging coal combustion subsystem. Avco/TDS is responsible for the MHD channel subsystem (nozzle, channel, diffuser, and power conditioning circuits), and Westinghouse is responsible for the current consolidation subsystem. The ITC Project will advance the state-of-the-art in MHD power systems with the design, construction, and integrated testing of 50 MW{sub t} power train components which are prototypical of the equipment that will be used in an early commercial scale MHD utility retrofit. Long duration testing of the integrated power train at the Component Development and Integration Facility (CDIF) in Butte, Montana will be performed, so that by the early 1990's, an engineering data base on the reliability, availability, maintainability and performance of the system will be available to allow scaleup of the prototypical designs to the next development level. This Sixteenth Quarterly Technical Progress Report covers the period May 1, 1991 to July 31, 1991.

  8. MHD Integrated Topping Cycle Project

    SciTech Connect

    Not Available

    1992-01-01

    The overall objective of the project is to design and construct prototypical hardware for an integrated MHD topping cycle, and conduct long duration proof-of-concept tests of integrated system at the US DOE Component Development and Integration Facility in Butte, Montana. The results of the long duration tests will augment the existing engineering design data base on MHD power train reliability, availability, maintainability, and performance, and will serve as a basis for scaling up the topping cycle design to the next level of development, an early commercial scale power plant retrofit. The components of the MHD power train to be designed, fabricated, and tested include: A slagging coal combustor with a rated capacity of 50 MW thermal input, capable of operation with an Eastern (Illinois {number sign}6) or Western (Montana Rosebud) coal, a segmented supersonic nozzle, a supersonic MHD channel capable of generating at least 1.5 MW of electrical power, a segmented supersonic diffuser section to interface the channel with existing facility quench and exhaust systems, a complete set of current control circuits for local diagonal current control along the channel, and a set of current consolidation circuits to interface the channel with the existing facility inverter.

  9. Crystal structure, electronic structure, temperature-dependent optical and scintillation properties of CsCe2Br7

    SciTech Connect

    Wu, Yuntao; Shi, Hongliang; Chakoumakos, Bryan C.; Zhuravleva, Mariya; Du, Mao-Hua; Melcher, Charles L.

    2015-10-05

    CsCe2Br7 is a self-activated inorganic scintillator that shows promising performance, but the understanding of the important structure-property relationships is lacking. In this work, we conduct a comprehensive study on CCsCe2Br7. The crystal structure of CsCe2Br7 is refined using single crystal X-ray study for the first time. It crystallizes into the orthorhombic crystal system with Pmnb space group. Its electronic structure is revealed by Density Functional Theory (DFT) calculations. Two cerium emission centers are identified and the energy barriers related to the thermal quenching to 4f ground states of Ce3+ for these two Ce centers are evaluated. CsCe2Br7 single crystal has better light yield and energy resolution than CsCe2Cl7, but with an additional slow decay component of 1.7 s. The existence of a deep trap with a depth of 0.9 eV in CsCe2Cl7 contributes to its higher afterglow level in comparison to that of CsCe2Br7. The most possible point defects in CsCe2Cl7 and CsCe2Br7 are proposed by considering the vapour pressure in the growth atmosphere upon melting point.

  10. Top Quark Studies at D0

    SciTech Connect

    Peters, Reinhild Yvonne

    2014-11-26

    Years after its discovery in 1995 by CDF and D0, the top quark still undergoes intense investigations at the Tevatron. Using up to the full Run II data sample, new measurements of top quark production and properties by the D0 Collaboration are presented. In particular, the first observation of single top quark s-channel production, the measurement of differential tbar t distributions, forward-backward tbar t asymmetry, a new measurement of the top quark mass, and a measurement of the top quark charge are discussed.

  11. CP Violation in Single Top Quark Production

    SciTech Connect

    Geng, Weigang

    2012-01-01

    We present a search for CP violation in single top quark production with the DØ experiment at the Tevatron proton-antiproton collider. CP violation in the top electroweak interaction results in different single top quark production cross sections for top and antitop quarks. We perform the search in the single top quark final state using 5.4 fb-1 of data, in the s-channel, t-channel, and for both combined. At this time, we do not see an observable CP asymmetry.

  12. A preliminary report on the photoionization efficiency spectrum, ionization energy and heat of formation of Br{sub 2}O; and the appearance energy of BrO{sup +} (Br{sub 2}O)

    SciTech Connect

    Thorn, R.P. Jr.; Monks, P.S.; Stief, L.J.; Kuo, S.C.; Zhang, Z.; Klemm, R.B.

    1995-08-01

    We report experimental results for the photoionization efficiency (PIE) spectrum of Br{sub 2}O along with the ionization energy (derived form the ionization threshold) and the appearance energy (AE) of BrO{sup +} (Br{sub 2}O). A value for the heat of formation of Br{sub 2}O is derived form the AE result. Experiments were performed by employing a discharge flow-photoionization mass spectrometer (DF-PIMS) apparatus coupled to beamline U-11 at the National Synchrotron Light Source (NSLS) at Brookhaven National Laboratory.

  13. FORT UNION DEEP

    SciTech Connect

    Lyle A. Johnson Jr.

    2002-03-01

    Coalbed methane (CBM) is currently the hottest area of energy development in the Rocky Mountain area. The Powder River Basin (PRB) is the largest CBM area in Wyoming and has attracted the majority of the attention because of its high permeability and relatively shallow depth. Other Wyoming coal regions are also being targeted for development, but most of these areas have lower permeability and deeper coal seams. This project consists of the development of a CBM stimulation system for deep coal resources and involves three work areas: (1) Well Placement, (2) Well Stimulation, and (3) Production Monitoring and Evaluation. The focus of this project is the Washakie Basin. Timberline Energy, Inc., the cosponsor, has a project area in southern Carbon County, Wyoming, and northern Moffat County, Colorado. The target coal is found near the top of the lower Fort Union formation. The well for this project, Evans No.1, was drilled to a depth of 2,700 ft. Three coal seams were encountered with sandstone and some interbedded shale between seams. Well logs indicated that the coal seams and the sandstone contained gas. For the testing, the upper seam at 2,000 ft was selected. The well, drilled and completed for this project, produced very little water and only occasional burps of methane. To enhance the well, a mild severity fracture was conducted to fracture the coal seam and not the adjacent sandstone. Fracturing data indicated a fracture half-length of 34 ft, a coal permeability of 0.2226 md, and permeability of 15.3 md. Following fracturing, the gas production rate stabilized at 10 Mscf/day within water production of 18 bpd. The Western Research Institute (WRI) CBM model was used to design a 14-day stimulation cycle followed by a 30-day production period. A maximum injection pressure of 1,200 psig to remain well below the fracture pressure was selected. Model predictions were 20 Mscf/day of air injection for 14 days, a one-day shut-in, then flowback. The predicted flowback

  14. FORT UNION DEEP

    SciTech Connect

    Lyle A. Johnson Jr.

    2002-09-01

    Coalbed methane (CBM) is currently the hottest area of energy development in the Rocky Mountain area. The Powder River Basin (PRB) is the largest CBM area in Wyoming and has attracted the majority of the attention because of its high permeability and relatively shallow depth. Other Wyoming coal regions are also being targeted for development, but most of these areas have lower permeability and deeper coal seams. This project consists of the development of a CBM stimulation system for deep coal resources and involves three work areas: (1) Well Placement, (2) Well Stimulation, and (3) Production Monitoring and Evaluation. The focus of this project is the Washakie Basin. Timberline Energy, Inc., the cosponsor, has a project area in southern Carbon County, Wyoming, and northern Moffat County, Colorado. The target coal is found near the top of the lower Fort Union formation. The well for this project, Evans No.1, was drilled to a depth of 2,700 ft. Three coal seams were encountered with sandstone and some interbedded shale between seams. Well logs indicated that the coal seams and the sandstone contained gas. For the testing, the upper seam at 2,000 ft was selected. The well, drilled and completed for this project, produced very little water and only occasional burps of methane. To enhance the well, a mild severity fracture was conducted to fracture the coal seam and not the adjacent sandstone. Fracturing data indicated a fracture half-length of 34 ft, a coal permeability of 0.2226 md, and permeability of 15.3 md. Following fracturing, the gas production rate stabilized at 10 Mscf/day within water production of 18 bpd. The Western Research Institute (WRI) CBM model was used to design a 14-day stimulation cycle followed by a 30-day production period. A maximum injection pressure of 1,200 psig to remain well below the fracture pressure was selected. Model predictions were 20 Mscf/day of air injection for 14 days, a one-day shut-in, then flowback. The predicted flowback

  15. MHD Integrated Topping Cycle Project

    SciTech Connect

    Not Available

    1992-07-01

    This seventeenth quarterly technical progress report of the MHD Integrated Topping Cycle Project presents the accomplishments during the period August 1, 1991 to October 31, 1991. Manufacturing of the prototypical combustor pressure shell has been completed including leak, proof, and assembly fit checking. Manufacturing of forty-five cooling panels was also completed including leak, proof, and flow testing. All precombustor internal components (combustion can baffle and swirl box) were received and checked, and integration of the components was initiated. A decision was made regarding the primary and backup designs for the 1A4 channel. The assembly of the channel related prototypical hardware continued. The cathode wall electrical wiring is now complete. The mechanical design of the diffuser has been completed.

  16. AmeriFlux BR-Sa3 Santarem-Km83-Logged Forest

    SciTech Connect

    Goulden, Mike

    2016-01-01

    This is the AmeriFlux version of the carbon flux data for the site BR-Sa3 Santarem-Km83-Logged Forest. Site Description - Cleared forest. Logged site is near km 83 along BR-183.

  17. Guide to Developing Air-Cooled Lithium Bromide (LiBr) Absorption...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Guide to Developing Air-Cooled Lithium Bromide (LiBr) Absorption for CHP Applications, April 2005 Guide to Developing Air-Cooled Lithium Bromide (LiBr) Absorption for CHP...

  18. EEBA Builder's Guides - Building America Top Innovation | Department...

    Energy.gov [DOE] (indexed site)

    Image showing EEBA Builder's Guides book covers. This Top Innovation highlights the ... Read the Top Innovation profile on the EEBA Builder Guides. View other Top Innovations in ...

  19. Ducts in Conditioned Space - Building America Top Innovation...

    Energy.gov [DOE] (indexed site)

    For this Top Innovation profile, Building America researchers worked with production ... Read about this Top Innovation. See an example of this Top Innovation in action. Find more ...

  20. Building America Top Innovations Hall of Fame Profile - Building...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Building America Top Innovations Hall of Fame Profile - Building America's Top Innovations Propel the Home Building Industry toward Higher Performance Building America Top ...

  1. High gradient rf gun studies of CsBr photocathodes

    SciTech Connect

    Vecchione, Theodore; Maldonado, Juan R.; Gierman, Stephen; Corbett, Jeff; Hartmann, Nick; Pianetta, Piero A.; Hesselink, Lambertus; Schmerge, John F.

    2015-04-03

    CsBr photocathodes have 10 times higher quantum efficiency with only 3 times larger intrinsic transverse emittance than copper. They are robust and can withstand 80 MV/m fields without breaking down or emitting dark current. They can operate in 210?? torr vacuum and survive exposure to air. They are well suited for generating high pulse charge in rf guns without a photocathode transfer system.

  2. High gradient rf gun studies of CsBr photocathodes

    DOE PAGES [OSTI]

    Vecchione, Theodore; Maldonado, Juan R.; Gierman, Stephen; Corbett, Jeff; Hartmann, Nick; Pianetta, Piero A.; Hesselink, Lambertus; Schmerge, John F.

    2015-04-03

    CsBr photocathodes have 10 times higher quantum efficiency with only 3 times larger intrinsic transverse emittance than copper. They are robust and can withstand 80 MV/m fields without breaking down or emitting dark current. They can operate in 2×10⁻⁹ torr vacuum and survive exposure to air. They are well suited for generating high pulse charge in rf guns without a photocathode transfer system.

  3. Deep Sky Astronomical Image Database

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Deep Sky Astronomical Image Database Deep Sky Astronomical Image Database Key Challenges: Develop, store, analyze, and make available an astronomical image database of...

  4. Measurement of top anti-top cross section in proton - anti-proton collider at s**(1/2) = 1.96-TeV

    SciTech Connect

    Mal, Prolay Kumar

    2005-04-01

    Discovery of the top quark in 1995 at the Fermilab Tevatron collider concluded a long search following the 1977 discovery of bottom (b) quark [1] and represents another triumph of the Standard Model (SM) of elementary particles. Top quark is one of the fundamental fermions in the Standard Model of electroweak interactions and is the weak-isospin partner of the bottom quark. A precise measurement of top pair production cross-section would be a test of Quantum Chromodynamics (QCD) prediction. Presently, Tevatron is the world's highest energy collider where protons (p) and anti-protons ({anti p}) collide at a centre of mass energy (ps) of 1.96 TeV. At Tevatron top (t) and anti-top ({anti t}) quarks are predominantly pair produced through strong interactions--quark annihilation ({approx_equal} 85%) and gluon fusion ({approx_equal} 15%). Due to the large mass of top quark, t or {anti t} decays ({approx} 10{sup -25} sec) before hadronization and in SM framework, it decays to a W boson and a b quark with {approx} 100% branching ratio (BR). The subsequent decay of W boson determines the major signatures of t{anti t} decay. If both W bosons (coming from t and {anti t} decays) decay into leptons (viz., ev{sub e}, {mu}{nu}{sub {mu}} or {tau}{nu}{sub {tau}}) the corresponding t{bar t} decay is called dileptonic decay. Of all dileptonic decay modes of t{bar t}, the t{bar t} {yields} WWb{anti b} {yields} ev{sub e}{mu}{nu}{sub {mu}}b{anti b} (e{mu} channel) decay mode has the smallest background contamination from Z{sup 0} production or Drell-Yan process; simultaneously, it has the highest BR ({approx} 3.16%) [2] amongst all dileptonic decay modes of t{bar t}. During Run I (1992-1996) of Tevatron, three e{mu} candidate events were detected by D0 experiment, out of 80 candidate events (inclusive of all decay modes of t{bar t}). Due to the rarity of the t{bar t} events, the measured cross-section has large uncertainty in its value (viz., 5.69 {+-} 1.21(stat) {+-} 1.04(sys) pb {at

  5. Deep Vadose Zone

    Energy.gov [DOE]

    The Mission of the Deep Vadose Zone Applied Field Research Initiative is to protect water resources across the DOE complex over the long-term by developing effective solutions to solve DOE’s most...

  6. Exploration for deep coal

    SciTech Connect

    2008-12-15

    The most important factor in safe mining is the quality of the roof. The article explains how the Rosebud Mining Co. conducts drilling and exploration in 11 deep coal mine throughout Pennsylvania and Ohio. Rosebud uses two Atlas Copco CS10 core drilling rigs mounted on 4-wheel drive trucks. The article first appeared in Atlas Copco's in-house magazine, Deep Hole Driller. 3 photos.

  7. Top quark mass measurements at CDF

    SciTech Connect

    Brubaker, Erik; /Chicago U., EFI

    2006-05-01

    The mass of the top quark M{sub top} is interesting both as a fundamental parameter of the standard model and as an important input to precision electroweak tests. The Collider Detector at Fermilab (CDF) has a robust program of top quark mass analyses, including the most precise single measurement, M{sub top} = 173.4 {+-} 2.8 GeV/c{sup 2}, using 680 pb{sup -1} of p{bar p} collision data. A combination of current results from CDF gives M{sub top} = 172.0 {+-} 2.7 GeV/c{sup 2}, surpassing the stated goal of 3 GeV/c{sup 2} precision using 2 fb{sup -1} of data. Finally, a combination with current D0 results gives a world average top quark mass of 172.5 {+-} 2.3 GeV/c{sup 2}.

  8. LANL named 2010 top corporate volunteer organization

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    2010 top corporate volunteer organization LANL named 2010 top corporate volunteer organization The Laboratory ranked ahead of dozens of other qualifying companies with 10,000 or more employees. May 18, 2011 Building and painting birdhouses with children in Santa Fe Building and painting birdhouses with children in Santa Fe. Contact Steve Sandoval Communications Office (505) 665-9206 Email LOS ALAMOS, New Mexico, May 18, 2011-Los Alamos National Laboratory has earned an award as the top corporate

  9. Top quark mass measurements at CDF

    SciTech Connect

    Maki, Tuula; /Helsinki U. /Helsinki Inst. of Phys.

    2007-10-01

    The top quark mass is interesting both as a fundamental parameter of the standard model as well as an important input to precision electroweak tests. The CDF Collaboration has measured the top quark mass with high precision in all decay channels with complementary methods. A combination of the results from CDF gives a top quark mass of 170.5{+-}1.3(stat.){+-}1.8(syst.) GeV/c{sup 2}.

  10. Unvented, Conditioned Crawlspaces - Building America Top Innovation |

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Department of Energy Crawlspaces - Building America Top Innovation Unvented, Conditioned Crawlspaces - Building America Top Innovation This photo shows the interior of a framed crawlspace with insulation installed. This Top Innovation profile highlights Building America research into the benefits of closed, conditioned crawlspaces over traditional vented crawlspaces. Crawlspace vents are supposed to prevent moisture problems, based on the assumption that fresh air entering through vents on

  11. Vapor Retarder Classification - Building America Top Innovation |

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Department of Energy Vapor Retarder Classification - Building America Top Innovation Vapor Retarder Classification - Building America Top Innovation Photo of a vapor retarder classification. Air-tight and well-insulated homes have little or no tolerance for drying if they get wet; moisture control is critical. This Top Innovation profile describes Building America research that established vapor retarder classifications and appropriate applications that has been instrumental in the market

  12. Top Quark Production Asymmetries AFBt and AFBl

    DOE PAGES [OSTI]

    Berger, Edmond L.; Cao, Qing-Hong; Chen, Chuan-Ren; Yu, Jiang-Hao; Zhang, Hao

    2012-02-14

    A large forward-backward asymmetry is seen in both the top quark rapidity distribution AFBt and in the rapidity distribution of charged leptons AFBl from top quarks produced at the Tevatron. We study the kinematic and dynamic aspects of the relationship of the two observables arising from the spin correlation between the charged lepton and the top quark with different polarization states. We emphasize the value of both measurements, and we conclude that a new physics model which produces more right-handed than left-handed top quarks is favored by the present data.

  13. Exploring Stratocumulus Cloud-Top Entrainment Processes

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    ... Reference(s) Albrecht B, M Fang, and V Ghate. 2016. "Exploring Stratocumulus Cloud-Top ... Contributors Bruce A. Albrecht, University of Miami Entrainment velocities from the eddy ...

  14. Unvented, Conditioned Crawlspaces - Building America Top Innovation...

    Energy.gov [DOE] (indexed site)

    This Top Innovation profile highlights Building America research into the benefits of ... Thousands of homes have now been constructed with this important innovation. Read about ...

  15. Dateline Los Alamos: Top Science News

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Science News of 2014 December 22, 2014 Dateline Los Alamos: Top Science News of 2014 Biosurveillance, secure computing, alternative energy, unique capabilities highlight the year....

  16. Mesa Top Photovoltaic Array (Fact Sheet)

    SciTech Connect

    Not Available

    2009-07-01

    Fact sheet overview of the Mesa Top Photovoltaic Array project implemented by the Department of Energy Golden Office and National Renewable Energy Laboratory.

  17. Infrastructure Development- Building America Top Innovations

    Energy.gov [DOE]

    Top Innovations in this category include research results that have influenced codes and standards and improvements in education and the transaction process.

  18. MHD Integrated Topping Cycle Project

    SciTech Connect

    Not Available

    1992-02-01

    This fourteenth quarterly technical progress report of the MHD Integrated Topping Cycle Project presents the accomplishments during the period November 1, 1990 to January 31, 1991. Testing of the High Pressure Cooling Subsystem electrical isolator was completed. The PEEK material successfully passed the high temperature, high pressure duration tests (50 hours). The Combustion Subsystem drawings were CADAM released. The procurement process is in progress. An equipment specification and RFP were prepared for the new Low Pressure Cooling System (LPCS) and released for quotation. Work has been conducted on confirmation tests leading to final gas-side designs and studies to assist in channel fabrication.The final cathode gas-side design and the proposed gas-side designs of the anode and sidewall are presented. Anode confirmation tests and related analyses of anode wear mechanisms used in the selection of the proposed anode design are presented. Sidewall confirmation tests, which were used to select the proposed gas-side design, were conducted. The design for the full scale CDIF system was completed. A test program was initiated to investigate the practicality of using Avco current controls for current consolidation in the power takeoff (PTO) regions and to determine the cause of past current consolidation failures. Another important activity was the installation of 1A4-style coupons in the 1A1 channel. A description of the coupons and their location with 1A1 channel is presented herein.

  19. Top-of-Rail lubricant

    SciTech Connect

    Alzoubi, M. F.; Fenske, G. R.; Erck, R. A.; Boparai, A. S.

    2000-07-14

    Analysis of the volatile and semivolatile fractions collected after use of the TOR lubricant indicated that other than contaminants in the collection laboratory, no compounds on the EPA's Target Compound Lists (Tables 2 and 5) were detected in these fractions. The data of these qualitative analyses, given in the various tables in the text, indicate only the relative amounts of the tentatively identified compounds. The authors recommend that quantitative analysis be performed on the volatile and semivolatile fractions to allow confirmation of the tentatively identified compounds and to obtain absolute amounts of the detected compounds. Additionally, the semivolatile fraction should be analyzed by liquid chromatography/mass spectrometry to identify compounds that are not chromatographable under the temperature program used for determination of semivolatile compounds. Introducing the top-of-rail (TOR) lubricant into the wheel/rail interface results in a reduction of almost 60% of lateral friction force over the forces encountered under dry conditions. This reveals good potential for energy savings, as well as wear reduction, for railroad companies. In TOR lubrication, an increase in the angle of attack and axle load results in increased lateral friction and rate of lubricant consumption. The most efficient TOR lubricant quantity to be used in the wheel/rail interface must be calculated precisely according to the number of cars, axle loads, train speed, and angle of attack.

  20. Vehicle Technologies Program: Goals, Strategies, and Top Accomplishmen...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Program: Goals, Strategies, and Top Accomplishments (Brochure), Vehicle Technologies Program (VTP) Vehicle Technologies Program: Goals, Strategies, and Top Accomplishments ...

  1. Improved Growth Methods for LaBr3 Scintillation Radiation Detectors

    SciTech Connect

    McGregor, Douglas S

    2011-05-01

    The objective is to develop advanced materials for deployment as high-resolution gamma ray detectors. Both LaBr3 and CeBr3 are advanced scintillation materials, and will be studied in this research. Prototype devices, in collaboration Sandia National Laboratories, will be demonstrated along with recommendations for mass production and deployment. It is anticipated that improved methods of crystal growth will yield larger single crystals of LaBr3 for deployable room-temperature operated gamma radiation spectrometers. The growth methods will be characterized. The LaBr3 and CeBr3 scintillation crystals will be characterized for light yield, spectral resolution, and for hardness.

  2. Natural Organobromine in Marine Sediments: New Evidence of Biogeochemical Br Cycling

    SciTech Connect

    A Leri; J Hakala; M Marcus; A Lanzirotti; C Reddy; S Myneni

    2011-12-31

    Organobromine (Br{sub org}) compounds, commonly recognized as persistent, toxic anthropogenic pollutants, are also produced naturally in terrestrial and marine systems. Several enzymatic and abiotic bromination mechanisms have been identified, as well as an array of natural Br{sub org} molecules associated with various marine organisms. The fate of the carbon-bromine functionality in the marine environment, however, remains largely unexplored. Oceanographic studies have noted an association between bromine (Br) and organic carbon (C{sub org}) in marine sediments. Even so, there has been no direct chemical evidence that Br in the sediments exists in a stable form apart from inorganic bromide (Br{sub inorg}), which is widely presumed conservative in marine systems. To investigate the scope of natural Br{sub org} production and its fate in the environment, we probed Br distribution and speciation in estuarine and marine sediments using in situ X-ray spectroscopy and spectromicroscopy. We show that Br{sub org} is ubiquitous throughout diverse sedimentary environments, occurring in correlation with C{sub org} and metals such as Fe, Ca, and Zn. Analysis of sinking particulate carbon from the seawater column links the Br{sub org} observed in sediments to biologically produced Br{sub org} compounds that persist through humification of natural organic matter (NOM). Br speciation varies with sediment depth, revealing biogeochemical cycling of Br between organic and inorganic forms as part of the burial and degradation of NOM. These findings illuminate the chemistry behind the association of Br with Corg in marine sediments and cast doubt on the paradigmatic classification of Br as a conservative element in seawater systems.

  3. TOP500 Supercomputers for June 2002

    SciTech Connect

    Strohmaier, Erich; Meuer, Hans W.; Dongarra, Jack; Simon, Horst D.

    2002-06-20

    19th Edition of TOP500 List of World's Fastest Supercomputers Released MANNHEIM, Germany; KNOXVILLE, Tenn.;&BERKELEY, Calif. In what has become a much-anticipated event in the world of high-performance computing, the 19th edition of the TOP500 list of the worlds fastest supercomputers was released today (June 20, 2002). The recently installed Earth Simulator supercomputer at the Earth Simulator Center in Yokohama, Japan, is as expected the clear new number 1. Its performance of 35.86 Tflop/s (trillions of calculations per second) running the Linpack benchmark is almost five times higher than the performance of the now No.2 IBM ASCI White system at Lawrence Livermore National Laboratory (7.2 Tflop/s). This powerful leap frogging to the top by a system so much faster than the previous top system is unparalleled in the history of the TOP500.

  4. Novel visible-light AgBr/Ag?PO? hybrids photocatalysts with surface plasma resonance effects

    SciTech Connect

    Wang, Yunfang Li, Xiuli; Wang, Yawen; Fan, Caimei

    2013-06-01

    Three kinds of AgBr/Ag?PO? hybrids were synthesised via an anion-exchange precipitation method and characterised by XRD, XPS, SEM, EDS, and UVvis. The results showed that AgBr/Ag?PO? hybrids displayed much higher photocatalytic activities than single Ag?PO? or AgBr under visible light (?>420 nm), and OH and h? were the major active species during the degradation process. Considering interstitial ions Ag?? on lattice gap of AgBr are easy to become sliver particle, we deduced the possible photocatalytic mechanism could be ascribed to the synergistic effects of the appropriate valence band position of Ag?PO? and AgBr, surface plasmon resonance effect of Ag?, reactive radical species Br?, and the Ag vacancy on the surface of catalysts. - Graphical abstract: The optical absorption and structural morphology of the as-prepared AgBr@Ag?PO? photocatalyst using an anion-exchange precipitation method are conductive to the photocatalytic degradation of organics in water. Highlights: Novel AgBr/Ag?PO? hybrids are synthesised by a facile method. AgBr/Ag?PO? hybrids show excellent photocatalytic activities under visible light. Interstitial ions are in favour of the formation of Ag particle. Surface plasmon resonance effect plays a key factor for light absorption. The photocatalytic mechanism for AgBr/Ag?PO? hybrids is studied.

  5. The Top Quark, QCD, And New Physics.

    DOE R&D Accomplishments

    Dawson, S.

    2002-06-01

    The role of the top quark in completing the Standard Model quark sector is reviewed, along with a discussion of production, decay, and theoretical restrictions on the top quark properties. Particular attention is paid to the top quark as a laboratory for perturbative QCD. As examples of the relevance of QCD corrections in the top quark sector, the calculation of e{sup+}e{sup -}+ t{bar t} at next-to-leading-order QCD using the phase space slicing algorithm and the implications of a precision measurement of the top quark mass are discussed in detail. The associated production of a t{bar t} pair and a Higgs boson in either e{sup+}e{sup -} or hadronic collisions is presented at next-to-leading-order QCD and its importance for a measurement of the top quark Yulrawa coupling emphasized. Implications of the heavy top quark mass for model builders are briefly examined, with the minimal supersymmetric Standard Model and topcolor discussed as specific examples.

  6. Top quark mass measurement at the Tevatron

    SciTech Connect

    Guimaraes da Costa, Joao; /Harvard U.

    2004-12-01

    The authors report on the latest experimental measurements of the top quark mass by the CDF and D0 Collaborations at the Fermilab Tevatron. They present a new top mass measurement using the t{bar t} events collected by the D0 Collaboration in Run I between 1994 and 1996. This result is combined with previous measurements to yield a new world top mass average. They also describe several preliminary results using up to 193 pb{sup -1} of t{bar t} events produced in {bar p}p collisions at {radical}s = 1.96 TeV during the Run II of the Tevatron.

  7. Top quark properties from the Tevatron

    SciTech Connect

    Klute, Markus; /MIT, LNS

    2006-05-01

    This report describes latest measurements and studies of top quark properties from the Tevatron in Run II with an integrated luminosity of up to 750 pb{sup -1}. Due to its large mass of about 172 GeV/c{sup 2}, the top quark provides a unique environment for tests of the Standard Model and is believed to yield sensitivity to new physics beyond the Standard Model. With data samples of close to 1 fb{sup -1} the CDF and D0 collaborations at the Tevatron enter a new area of precision top quark measurements.

  8. Precision Determination of the Top Quark Mass

    SciTech Connect

    Movilla Fernandez, Pedro A.; /LBL, Berkeley

    2007-05-01

    The CDF and D0 collaborations have updated their measurements of the mass of the top quark using proton-antiproton collisions at {radical}s = 1.96 TeV produced at the Tevatron. The uncertainties in each of the top-antitop decay channels have been reduced. The new Tevatron average for the mass of the top quark based on about 1 fb{sup -1} of data per experiment is 170.9 {+-} 1.8 GeV/c{sup 2}.

  9. NERSC Supports Top Breakthroughs of 2013

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Supports 2013's Top Breakthroughs NERSC Supports Top Breakthroughs of 2013 December 20, 2013 Linda Vu, +1 510 495 2402, lvu@lbl.gov Research supported by NERSC is being honored by end-of-year reviews in two leading magazines: Physics World and WIRED. The IceCube South Pole Neutrino Observatory was notably named to both lists, being honored as the most important discovery by Physics World. Three of Physics World's top 10 breakthroughs of 2013 went to discoveries that used NERSC resources. In

  10. Deep Energy Retrofits & State Applications

    Energy.gov [DOE]

    This presentation, given through the DOE's Technical Assitance Program (TAP), provides information on Deep Energy Retrofits & State Applications

  11. Nervana Neon - Scalable Deep Learning library

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Neon Nervana Neon - Scalable Deep Learning library Description and Overview neon is an easy to use, python-based scalable Deep Learning library. Deep Learning has recently achieved...

  12. Dark Decay of the Top Quark

    SciTech Connect

    Kong, Kyoungchul; Lee, Hye-Sung; Park, Myeonghun

    2014-04-01

    We suggest top quark decays as a venue to search for light dark force carriers. The top quark is the heaviest particle in the standard model whose decays are relatively poorly measured, allowing sufficient room for exotic decay modes from new physics. A very light (GeV scale) dark gauge boson (Z') is a recently highlighted hypothetical particle that can address some astrophysical anomalies as well as the 3.6sigma deviation in the muon g-2 measurement. We present and study a possible scenario that top quark decays as t-->bW+Z's. This is the same as the dominant top quark decay (t-->bW) accompanied by one or multiple dark force carriers. The Z' can be easily boosted, and it can decay into highly collimated leptons (lepton-jet) with large branching ratio. We discuss the implications for the Large Hadron Collider experiments including the analysis based on the lepton-jets.

  13. Press Pass - Press Release - Single Top

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    DZero finds evidence of rare single top quark; Observation marks a step closer to finding Higgs boson Batavia, Ill.--Scientists of the DZero collaboration at the Department of...

  14. Top Quark Physics at the Tevatron

    SciTech Connect

    Jung, Andreas W.

    2015-05-21

    An overview of recent top quark measurements using the full Run II data set of CDF or D0 at the Tevatron is presented. Results are complementary to the ones at the LHC. Recent measurements of the production cross section of top quarks in strong and electroweak production and of top quark production asymmetries are presented. The latter includes the measurement of the tt-bar production asymmetry by D0 in the dilepton decay channel. Within their uncertainties the results from all these measurements agree with their respective Standard Model expectation. Finally latest updates on measurements of the top quark mass are discussed, which at the time of the conference are the most precise determinations.

  15. Dark decay of the top quark

    SciTech Connect

    Kong, Kyoungchul; Lee, Hye -Sung; Park, Myeonghun

    2014-04-01

    We suggest top quark decays as a venue to search for light dark force carriers. Top quark is the heaviest particle in the standard model whose decays are relatively poorly measured, allowing sufficient room for exotic decay modes from new physics. A very light (GeV scale) dark gauge boson (Z') is a recently highlighted hypothetical particle that can address some astrophysical anomalies as well as the 3.6 σ deviation in the muon g-2 measurement. We present and study a possible scenario that top quark decays as t → b W + Z's. This is the same as the dominant top quark decay (t → b W) accompanied by one or multiple dark force carriers. The Z' can be easily boosted, and it can decay into highly collimated leptons (lepton-jet) with large branching ratio. In addition, we discuss the implications for the Large Hadron Collider experiments including the analysis based on the lepton-jets.

  16. JLab Cluster Tops 100 Teraflops | Jefferson Lab

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    JLab Cluster Tops 100 Teraflops JLab Cluster Tops 100 Teraflops NEWPORT NEWS, VA, Oct. 14 - The fastest computer system in Hampton Roads has booted up with more than 100 Teraflops of processing power. Located at the Department of Energy's Thomas Jefferson National Accelerator Facility, the cluster computer system was recently upgraded with video game components to assist scientists in modeling the smallest bits of matter in the universe. "Our resources crossed 100 Teraflops of sustained

  17. The Discovery of the Top Quark

    DOE R&D Accomplishments

    Sinervo, P.K.

    1995-12-01

    The top quark and the Higgs boson are the heaviest elementary particles predicted by the standard model. The four lightest quark flavours, the up, down, strange and charm quarks, were well-established by the mid-1970's. The discovery in 1977 of the {Tau} resonances, a new family of massive hadrons, required the introduction of the fifth quark flavour. Experimental and theoretical studies have indicated that this quark also has a heavier partner, the top quark.

  18. Tools for top physics at CDF

    SciTech Connect

    Palencia, E.; /Fermilab

    2008-07-01

    The authors describe here the different tools used for top physics analysis in the CDF Collaboration. In particular, they discuss how the jet energy scale, lepton identification, b tagging algorithms and the neural networks help to improve the signal to background ratio of the top sample in some cases and to reduce the dominant uncertainties in other. Results using each one of these tools are also presented.

  19. X-ray photoemission analysis of chemically modified TlBr surfaces for improved radiation detectors

    DOE PAGES [OSTI]

    Nelson, A. J.; Voss, L. F.; Beck, P. R.; Graff, R. T.; Conway, A. M.; Nikolic, R. J.; Payne, S. A.; Lee, J. -S.; Kim, H.; Cirignano, L.; et al

    2013-01-12

    We subjected device-grade TlBr to various chemical treatments used in room temperature radiation detector fabrication to determine the resulting surface composition and electronic structure. As-polished TlBr was treated separately with HCl, SOCl2, Br:MeOH and HF solutions. High-resolution photoemission measurements on the valence band electronic structure and Tl 4f, Br 3d, Cl 2p and S 2p core lines were used to evaluate surface chemistry and shallow heterojunction formation. Surface chemistry and valence band electronic structure were correlated with the goal of optimizing the long-term stability and radiation response.

  20. Apparatus for improving the working time of the XeBr laser

    DOEpatents

    Sander, Robert K.; Balog, George; Seegmiller, Emma T.

    1982-01-01

    In XeBr lasers which make use of HBr as the source of bromine, it has been found that the working life of the laser is limited because of dissociation of the HBr in the lasing region to form H.sub.2 and Br.sub.2. Accordingly, apparatus is disclosed for substantially improving the working time of the XeBr laser wherein means are provided for recombining H.sub.2 and Br.sub.2 into HBr and for continuously circulating the gaseous working medium from the lasing region through the recombination region. BACKGROUND OF THE INVENTION

  1. Guide to Developing Air-Cooled Lithium Bromide (LiBr) Absorption...

    Energy.gov [DOE] (indexed site)

    lithium bromide (LiBr)-water absorption chillers to guide future efforts to develop chillers for combined heat and power (CHP) applications in light-commercial buildings. ...

  2. The Controlling Mechanism for Potential Loss in CH 3 NH 3 PbBr 3 Hybrid

    Office of Scientific and Technical Information (OSTI)

    Solar Cells (Journal Article) | SciTech Connect Journal Article: The Controlling Mechanism for Potential Loss in CH 3 NH 3 PbBr 3 Hybrid Solar Cells Citation Details In-Document Search Title: The Controlling Mechanism for Potential Loss in CH 3 NH 3 PbBr 3 Hybrid Solar Cells We investigated moisture and thermal stability of MAPbBr3 perovskite material. Cubic MAPbBr3 was found to be moisture-insensitive and can avoid the thermal stability issues introduced by low-temperature phase transition

  3. Apparatus for improving the working time of the XeBr laser

    DOEpatents

    Sander, R.K.; Balog, G.; Seegmiller, E.T.

    1980-03-04

    In XeBr lasers which make use of HBr as the source of bromine, it has been found that the working life of the laser is limited because of dissociation of the HBr in the lasing region to form H/sub 2/ and Br/sub 2/. Accordingly, apparatus is disclosed for substantially improving the working time of the XeBr laser wherein means are provided for recombining H/sub 2/ and Br/sub 2/ into HBr and for continuously circulating the gaseous working medium from the lasing region through the recombination region.

  4. Measurement of top quark polarisation in t-channel single top quark production

    DOE PAGES [OSTI]

    Khachatryan, Vardan

    2016-04-13

    Our first measurement of the top quark spin asymmetry, sensitive to the top quark polarisation, in t-channel single top quark production is presented. It is based on a sample of pp collisions at a centre-of-mass energy of 8 TeV corresponding to an integrated luminosity of 19.7 fb-1. A high-purity sample of t-channel single top quark events with an isolated muon is selected. Signal and background components are estimated using a fit to data. Furthermore, a differential cross section measurement, corrected for detector effects, of an angular observable sensitive to the top quark polarisation is performed. The differential distribution is usedmore » to extract a top quark spin asymmetry of 0.26 ± 0.03 (stat) ± 0.10 (syst), which is compatible with a p-value of 4.6% with the standard model prediction of 0.44.« less

  5. Measurement of top quark polarisation in t-channel single top quark production

    SciTech Connect

    Khachatryan, Vardan

    2015-11-09

    Our first measurement of the top quark spin asymmetry, sensitive to the top quark polarisation, in t-channel single top quark production is presented. It is based on a sample of pp collisions at a centre-of-mass energy of 8 TeV corresponding to an integrated luminosity of 19.7 fb-1. A high-purity sample of t-channel single top quark events with an isolated muon is selected. Signal and background components are estimated using a fit to data. Furthermore, a differential cross section measurement, corrected for detector effects, of an angular observable sensitive to the top quark polarisation is performed. The differential distribution is used to extract a top quark spin asymmetry of 0.26 ± 0.03 (stat) ± 0.10 (syst), which is compatible with a p-value of 4.6% with the standard model prediction of 0.44.

  6. Top Quark Properties in Little Higgs Models

    SciTech Connect

    Berger, C.F.; Perelstein, M.; Petriello, F.; /Wisconsin U., Madison

    2005-12-08

    Identifying the mechanism which breaks electroweak symmetry and generates fermion masses is one of the main physics goals for both the LHC and the ILC. Studies of the top quark have the potential to illuminate this issue; since it is the heaviest of the Standard Model (SM) fermions, the top is expected to couple strongly to the symmetry-breaking sector. Consequently, the structure of that sector can have significant, potentially observable effects on the properties of the top. for example, it is well known that the vector and axial t{bar t}Z form factors receive large corrections (of order 5-10%) in certain models of dynamical electroweak symmetry breaking [1]. At future colliders such as the LHC and the ILC, we will be able to pursue a program of precision top physics, similar to the program studying the Z at LEP and SLC. In this manuscript, they study the corrections to the top quark properties in ''Little Higgs'' models of electroweak symmetry breaking [2], and compare the expected deviations from the SM predictions with expected sensitivities of experiments at the LHC and the ILC. In the Little Higgs models, electroweak symmetry is driven by the radiative effects from the top sector, including the SM-like top and its heavy counterpart, a TeV-scale ''heavy top'' T. Probing this structure experimentally is quite difficult. While the LHC should be able to discover the T quark, its potential for studying its couplings is limited [3,4]. Direct production of the T will likely be beyond the kinematic reach of the ILC. However, we will show below that the corrections to the gauge couplings of the SM top, induced by its mixing with the T, will be observable at the ILC throughout the parameter range consistent with naturalness. Measuring these corrections will provide a unique window on the top sector of the Little Higgs. Many Little Higgs models have been proposed in the literature. We will consider two examples in this study, the ''Littlest Higgs'' model [5], and its

  7. Performance of LiAlloy/Ag(2)CrO(4) Couples in Molten CsBr-LiBr-KBr Eutectic

    SciTech Connect

    GUIDOTTI,RONALD A.; REINHARDT,FREDERICK W.

    1999-10-18

    The performance of Li-alloy/CsBr-LiBr-KBr/Ag{sub 2}CrO{sub 4} systems was studied over a temperature range of 250 C to 300 C, for possible use as a power source for geothermal borehole applications. Single cells were discharged at current densities of 15.8 and 32.6 mA/cm{sup 2} using Li-Si and Li-Al anodes. When tested in 5-cell batteries, the Li-Si/CsBr-LiBr-KBr/Ag{sub 2}CrO{sub 4} system exhibited thermal runaway. Thermal analytical tests showed that the Ag{sub 2}CrO{sub 4} cathode reacted exothermically with the electrolyte on activation. Consequently, this system would not be practical for the envisioned geothermal borehole applications.

  8. Fact #651: November 29, 2010 Hybrid Vehicles Dominate EPA's Top...

    Energy.gov [DOE] (indexed site)

    Each year, the Environmental Protection Agency (EPA) produces a list of the top ten most ... Top Ten EPA-Rated Fuel Sippers (2011) Chart of top ten EPA-Rated Fuel Sippers (2011). ...

  9. Americas_Next_Top_Energy_Innovator_Fact_Sheet.pdf | Department...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    AmericasNextTopEnergyInnovatorFactSheet.pdf AmericasNextTopEnergyInnovatorFactSheet.pdf PDF icon AmericasNextTopEnergyInnovatorFactSheet.pdf More Documents & ...

  10. Buried and Encapsulated Ducts - Building America Top Innovation...

    Energy.gov [DOE] (indexed site)

    method suitable for both new and existing homes that won a 2013 Top Innovation award. ... Learn more about this Top Innovation. See an example of this Top Innovation in action. ...

  11. Top anti-top forward-backward asymmetry in the economical 331 model

    SciTech Connect

    Mekahlia, A.; Mebarki, N.; Haouchine, M.

    2012-06-27

    Within the economical 331 model the top-antitop asymmetry at the Tevatron where the quark-antiquark annihilation subprocess dominates is calculated. The results are also discussed.

  12. Building America Top Innovations Hall of Fame Profile - Building...

    Energy Saver

    Building America Top Innovations Hall of Fame Profile - Building Energy Optimization Analysis Method (BEopt) Building America Top Innovations Hall of Fame Profile - Building Energy...

  13. Programs and Contractors -Top Tips for Successful Relationships...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Programs and Contractors -Top Tips for Successful Relationships (101) Programs and Contractors -Top Tips for Successful Relationships (101) Better Buildings Residential Network ...

  14. HVAC Cabinet Air Leakage Test Method - Building America Top Innovation...

    Energy Saver

    HVAC Cabinet Air Leakage Test Method - Building America Top Innovation HVAC Cabinet Air Leakage Test Method - Building America Top Innovation While HVAC installers have improved ...

  15. Cyclotron Road: Creating a Home for Top Clean Energy Technology...

    Energy Saver

    Cyclotron Road: Creating a Home for Top Clean Energy Technology Entrepreneurs within our National Laboratories Cyclotron Road: Creating a Home for Top Clean Energy Technology ...

  16. Measurement of cross section of quark pair production top with...

    Office of Scientific and Technical Information (OSTI)

    Measurement of cross section of quark pair production top with the D0 experiment at the Tevatron and determination the top quark mass using this measure Citation Details ...

  17. High-Efficiency Window Air Conditioners - Building America Top...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    High-Efficiency Window Air Conditioners - Building America Top Innovation High-Efficiency Window Air Conditioners - Building America Top Innovation This photo shows a window air ...

  18. Final Reports on the Top Runner Target Product Standards (Japan...

    OpenEI (Open Energy Information) [EERE & EIA]

    Reports on the Top Runner Target Product Standards (Japan) Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Final Reports on the Top Runner Target Product Standards...

  19. Building America Top Innovations 2014 Profile: California Energy...

    Office of Scientific and Technical Information (OSTI)

    Selection This 2014 Top Innovation profile describes Building America research on ... Country of Publication: United States Language: English Subject: Building America; top ...

  20. Spring Forward: Top Strategies for Growing and Scaling Your Program...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Spring Forward: Top Strategies for Growing and Scaling Your Program (301) Spring Forward: Top Strategies for Growing and Scaling Your Program (301) May 2

  1. GE China Technology Center Wins Top 12 Most Innovative Practices...

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    China Technology Center Wins Top 12 Most Innovative Practices Award of "Multinational ... GE China Technology Center Wins Top 12 Most Innovative Practices Award of "Multinational ...

  2. Bullseye: Top Strategies for Targeted Marketing (101) | Department...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Bullseye: Top Strategies for Targeted Marketing (101) Bullseye: Top Strategies for Targeted Marketing (101) May 12, 2016 1:00PM to 2:3

  3. Top Green Energy Technologies Inc | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Green Energy Technologies Inc Jump to: navigation, search Name: Top Green Energy Technologies Inc Place: Jhunan, Taiwan Zip: 350 Sector: Solar Product: Top Green is a manufacturer...

  4. Top of the World (Siemens) | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Siemens) Jump to: navigation, search Name Top of the World (Siemens) Facility Top of the World (Siemens) Sector Wind energy Facility Type Commercial Scale Wind Facility Status In...

  5. Exterior Rigid Insulation Best Practices - Building America Top...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Exterior Rigid Insulation Best Practices - Building America Top Innovation Exterior Rigid Insulation Best Practices - Building America Top Innovation Effec guid-exterior rigid ...

  6. Quality Management System Guidelines - Building America Top Innovation...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Quality management tools tailored for the high performance homebuilding industry provide ... View other Top Innovations in the Effective Guidance and Tools category. Top Innovation - ...

  7. Effective Guidance and Tools - Building America Top Innovations...

    Energy Saver

    Effective Guidance and Tools - Building America Top Innovations Effective Guidance and Tools - Building America Top Innovations August 25, 2014 - 11:00am Addthis Effective Guidance ...

  8. DOE Announces Webinars on Top Solar Tools, Building Energy Optimizatio...

    Office of Environmental Management (EM)

    Top Solar Tools, Building Energy Optimization Tool Training, and More DOE Announces Webinars on Top Solar Tools, Building Energy Optimization Tool Training, and More May 8, 2014 - ...

  9. Building Science-Based Climate Maps - Building America Top Innovation...

    Energy Saver

    Building Science-Based Climate Maps - Building America Top Innovation Building Science-Based Climate Maps - Building America Top Innovation Photo showing climate zone maps based on ...

  10. Deputy Energy Secretary Sherwood-Randall Highlights a Top Budget...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Deputy Energy Secretary Sherwood-Randall Highlights a Top Budget Priority in Texas Deputy Energy Secretary Sherwood-Randall Highlights a Top Budget Priority in Texas February 3,...

  11. Top quark pair production cross section at Tevatron (Conference...

    Office of Scientific and Technical Information (OSTI)

    Conference: Top quark pair production cross section at Tevatron Citation Details In-Document Search Title: Top quark pair production cross section at Tevatron You are accessing ...

  12. Feynman Center for Innovation honors top technical trailblazers

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Feynman Center honors top technical trailblazers Feynman Center for Innovation honors top technical trailblazers Gary Grider received the 2015 Richard P. Feynman Innovation Prize for ...

  13. Outside Air Ventilation Controller - Building America Top Innovation...

    Office of Environmental Management (EM)

    Outside Air Ventilation Controller - Building America Top Innovation Outside Air Ventilation Controller - Building America Top Innovation This photo shows a two-story house with ...

  14. Unvented Crawlspace Code Adoption - Building America Top Innovation...

    Energy Saver

    Unvented Crawlspace Code Adoption - Building America Top Innovation Unvented Crawlspace Code Adoption - Building America Top Innovation Photo of an unvented and insulated ...

  15. Advanced Framing Systems and Packages - Building America Top...

    Energy Saver

    Advanced Framing Systems and Packages - Building America Top Innovation Advanced Framing Systems and Packages - Building America Top Innovation This photo shows advanced framing ...

  16. Feynman Center for Innovation honors top technical trailblazers

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Feynman Center honors top technical trailblazers Feynman Center for Innovation honors top ... Gary Grider (second from right) with the 2015 Richard P. Feynman Innovation Prize. Also ...

  17. Tankless Gas Water Heater Performance - Building America Top...

    Energy Saver

    Tankless Gas Water Heater Performance - Building America Top Innovation Tankless Gas Water Heater Performance - Building America Top Innovation This photo shows a hot water heater ...

  18. Water Management Guide - Building America Top Innovation | Department...

    Energy Saver

    Water Management Guide - Building America Top Innovation Water Management Guide - Building America Top Innovation Cover of the EEBA Water Management Guide. As energy codes and ...

  19. America Chooses the Next Top Energy Innovator | Department of...

    Energy.gov [DOE] (indexed site)

    The Americas Next Top Energy Innovator Challenge makes inventions and technologies ... The America's Next Top Energy Innovator Challenge makes inventions and technologies ...

  20. Attic Air Sealing Guide - Building America Top Innovation | Department...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Attic Air Sealing Guide - Building America Top Innovation Attic Air Sealing Guide - Building America Top Innovation Image showing step-by-step instructions for air sealing. One of ...

  1. Towards the Top with D0

    SciTech Connect

    Deliot, Frederic

    2012-01-01

    The plan of this manuscript follows my research path over the past 10 years: the muon identification and common analysis tools at DØ, the measurement of the inclusive production of W boson decaying into muon and top quark studies. In the first section, I describe my work about muon identification, certification of the standard muon identification criteria, measurement of the muon selection efficiency and about the development of common analysis format and tools. In the second section, I explain how these efficiency measurements can be used to measure the inclusive W boson production cross section in the muon channel. The W ! μν cross section measurement can be seen as a standard candle to establish several analysis pieces that have to be put in place to perform more complex measurements like top quark analyses. In the last section I introduce more extensively the top quark physics at the Tevatron and describe in more details the main analyses in the dilepton channel I was involved in: the measurement of the tt inclusive cross section in the dilepton channel as well as the ratio of cross sections, the measurement of the top quark mass in the dilepton channel, the extraction of the mass from the tt cross section and the Tevatron top quark mass combination. Before concluding, I finish the section with the description of the latest results on the tt charge asymmetry both at the Tevatron and at the LHC.

  2. A measurement of the top quark's charge

    SciTech Connect

    Unalan, Zeynep Gunay; /Michigan State U.

    2007-11-01

    The top quark was discovered in 1995 at the Fermilab National Accelerator Laboratory (Fermilab). One way to confirm if the observed top quark is really the top quark posited in the Standard Model (SM) is to measure its electric charge. In the Standard Model the top quark is the isospin partner of the bottom quark and is expected to have a charge of +2/3. However, an alternative 'exotic' model has been proposed with a fourth generation exotic quark that has the same characteristics, such as mass, as our observed top but with a charge of -4/3. This thesis presents the first CDF measurement of the top quark's charge via its decay products, a W boson and a bottom quark, using {approx} 1 fb{sup -1} of data. The data were collected by the CDF detector from proton anti-proton (p{bar p}) collisions at {radical}s = 1.96 TeV at Fermilab. We classify events depending on the charges of the bottom quark and associated W boson and count the number of events which appear 'SM-like' or 'exotic-like' with a SM-like event decaying as t {yields} W{sup +}b and an exotic event as t {yields} W{sup -}b. We find the p-value under the Standard Model hypothesis to be 0:35 which is consistent with the Standard Model. We exclude the exotic quark hypothesis at an 81% confidence level, for which we have chosen a priori that the probability of incorrectly rejecting the SM would be 1%. The calculated Bayes Factor (BF) is 2 x Ln(BF)=8.54 which is interpreted as the data strongly favors the Standard Model over the exotic quark hypothesis.

  3. Results for aliovalent doping of CeBr{sub 3} with Ca{sup 2+}

    SciTech Connect

    Guss, Paul; Foster, Michael E.; Wong, Bryan M.; Patrick Doty, F.; Shah, Kanai; Squillante, Michael R.; Shirwadkar, Urmila; Hawrami, Rastgo; Tower, Joshua; Yuan, Ding

    2014-01-21

    Despite the outstanding scintillation performance characteristics of cerium tribromide (CeBr{sub 3}) and cerium-activated lanthanum tribromide, their commercial availability and application are limited due to the difficulties of growing large, crack-free single crystals from these fragile materials. This investigation employed aliovalent doping to increase crystal strength while maintaining the optical properties of the crystal. One divalent dopant (Ca{sup 2+}) was used as a dopant to strengthen CeBr{sub 3} without negatively impacting scintillation performance. Ingots containing nominal concentrations of 1.9% of the Ca{sup 2+} dopant were grown, i.e., 1.9% of the CeBr{sub 3} molecules were replaced by CaBr{sub 2} molecules, to match our target replacement of 1 out of 54 cerium atoms be replaced by a calcium atom. Precisely the mixture was composed of 2.26 g of CaBr{sub 2} added to 222.14 g of CeBr{sub 3}. Preliminary scintillation measurements are presented for this aliovalently doped scintillator. Ca{sup 2+}-doped CeBr{sub 3} exhibited little or no change in the peak fluorescence emission for 371?nm optical excitation for CeBr{sub 3}. The structural, electronic, and optical properties of CeBr{sub 3} crystals were studied using the density functional theory within the generalized gradient approximation. Calculated lattice parameters are in agreement with the experimental data. The energy band structures and density of states were obtained. The optical properties of CeBr{sub 3}, including the dielectric function, were calculated.

  4. NREL Researcher is Top World Physicist

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    is Top World Physicist For more information contact: Kerry Masson, (303) 275-4083 e:mail: kerry_masson@nrel.gov Golden, Colo., March 17, 1998 — Dr. Alex Zunger, Institute Research Fellow at the U.S. Department of Energy's (DOE) National Renewable Energy Laboratory (NREL), has been ranked as one of the top physicists in the world by the Institute of Scientific Information (ISI). The standing is based on the number of times his research has been cited by fellow scientists. Of the 517,111

  5. TOP500 Supercomputers for November 2003

    SciTech Connect

    Strohmaier, Erich; Meuer, Hans W.; Dongarra, Jack; Simon, Horst D.

    2003-11-16

    22nd Edition of TOP500 List of World s Fastest Supercomputers Released MANNHEIM, Germany; KNOXVILLE, Tenn.; BERKELEY, Calif. In what has become a much-anticipated event in the world of high-performance computing, the 22nd edition of the TOP500 list of the worlds fastest supercomputers was released today (November 16, 2003). The Earth Simulator supercomputer retains the number one position with its Linpack benchmark performance of 35.86 Tflop/s (''teraflops'' or trillions of calculations per second). It was built by NEC and installed last year at the Earth Simulator Center in Yokohama, Japan.

  6. Evidence for production of single top quarks

    SciTech Connect

    Abazov, V.M.; Abbott, B.; Abolins, M.; Acharya, B.S.; Adams, M.; Adams, T.; Aguilo, E.; Ahn, S.H.; Ahsan, M.; Alexeev, G.D.; Alkhazov, G.; /St. Petersburg, INP /Michigan U.

    2008-03-01

    We present first evidence for the production of single top quarks in the D0 detector at the Fermilab Tevatron p{bar p} collider. The standard model predicts that the electroweak interaction can produce a top quark together with an antibottom quark or light quark, without the antiparticle top quark partner that is always produced from strong coupling processes. Top quarks were first observed in pair production in 1995, and since then, single top quark production has been searched for in ever larger datasets. In this analysis, we select events from a 0.9 fb{sup -1} dataset that have an electron or muon and missing transverse energy from the decay of a W boson from the top quark decay, and two, three, or four jets, with one or two of the jets identified as originating from a b hadron decay. The selected events are mostly backgrounds such as W+jets and t{bar t} events, which we separate from the expected signals using three multivariate analysis techniques: boosted decision trees, Bayesian neural networks, and matrix element calculations. A binned likelihood fit of the signal cross section plus background to the data from the combination of the results from the three analysis methods gives a cross section for single top quark production of {sigma}(p{bar p} {yields} tb + X, tqb + X) = 4.7 {+-} 1.3 pb. The probability to measure a cross section at this value or higher in the absence of signal is 0.014%, corresponding to a 3.6 standard deviation significance. The measured cross section value is compatible at the 10% level with the standard model prediction for electroweak top quark production. We use the cross section measurement to directly determine the Cabibbo-Kobayashi-Maskawa quark mixing matrix element that describes the Wtb coupling and find |V{sub tb}f{sub 1}{sup L}| = 1.31{sub -0.21}{sup +0.25}, where f{sub 1}{sup L} is a generic vector coupling. This model-independent measurement translates into 0.68 < |V{sub tb}| {le} 1 at the 95% C.L. in the standard model.

  7. Top and Electroweak Measurements at the Tevatron

    SciTech Connect

    Bartos, P.

    2016-01-01

    In this report, we summarize the latest results of the top-quark mass and electroweak measurements from the Tevatron. Since the world combination of top-quark mass measurements was done, CDF and D0 experiments improved the precision of several results. Some of them reach the relative precition below 1% for a single measurement. From the electroweak results, we report on the WW and WZ production cross section, measurements of the weak mixing angle and indirect measurements of W boson mass. The Tevatron results of the weak mixing angle are still the most precise ones of hadron colliders.

  8. Top Quark Spin Correlations at the Tevatron

    SciTech Connect

    Head, Tim; /Manchester U.

    2010-07-01

    Recent measurements of the correlation between the spin of the top and the spin of the anti-top quark produced in proton anti-proton scattering at a center of mass energy of {radical}s = 1.96 Tev by the CDF and D0 collaborations are discussed. using up to 4.3 fb{sup -1} of data taken with the CDF and D0 detectors the spin correlation parameter C, the degree to which the spins are correlated, is measured in dileptonic and semileptonic final states. The measurements are found to be in agreement with Standard Model predictions.

  9. Turmoil at the Top of the World

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Turmoil at the Top of the World 1663 Los Alamos science and technology magazine Latest Issue:July 2016 past issues All Issues » submit Turmoil at the Top of the World The Arctic tundra is being drained and dried by the warming climate. July 21, 2016 arctic tundra signature pattern of polygons The Arctic tundra has a signature pattern of polygons due to complex interactions between soil and water-interactions that are being disrupted by the warming climate. "It's exciting but also scary. I

  10. Studies of top quark properties and search for electroweak single top quark production at the Tevatron

    SciTech Connect

    Datta, Mousumi; /Fermilab

    2007-10-01

    The top quark was discovered in 1995 by the CDF and D0 experiments at the Fermilab Tevatron during the Run I operation. Since the start of the Tevatron Run II in 2001, both experiments have collected {approx}2 fb{sup -1} data samples, which are over twenty times larger than that used in the Run 1 discovery. This larger data sample allows more precise studies of top-quark properties; differences between observed top-quark properties and the Standard Model (SM) prediction may give hints to possible physics beyond the SM. Here we present the latest results on the measurements of top-quark properties and the search for electroweak (EW) single top quark production from the CDF and D0 collaborations. The integrated luminosity used for the measurements corresponds to about 1 fb{sup -1}.

  11. Deep drawing of uranium metal

    SciTech Connect

    Jackson, R J; Lundberg, M R

    1987-01-19

    A procedure was developed to fabricate uranium forming blanks with high ''draw-ability'' so that cup shapes could be easily and uniformly deep drawn. The overall procedure involved a posttreatment to develop optimum mechanical and structural properties in the deep-drawn cups. The fabrication sequence is casting high-purity logs, pucking cast logs, cross-rolling pucks to forming blanks, annealing and outgassing forming blanks, cold deep drawing to hemispherical shapes, and stress relieving, outgassing, and annealing deep-drawn parts to restore ductility and impart dimensional stability. The fabrication development and the resulting fabrication procedure are discussed in detail. The mechanical properties and microstructural properties are discussed.

  12. A deep earthquake goes supershear

    SciTech Connect

    Wilson, R. Mark

    2014-09-01

    Seismic analysis of an aftershock off Russias Kamchatka Peninsula offers evidence that deep earthquakes are more complicated than geoscientists realized.

  13. Figure 2 (top).gif | OSTI, US Dept of Energy Office of Scientific and

    Office of Scientific and Technical Information (OSTI)

    Technical Information (top).gif

  14. Vehicle Technologies Program: Goals, Strategies, and Top Accomplishments (Brochure)

    SciTech Connect

    Not Available

    2010-12-01

    Fact sheet describes the Vehicle Technologies Program and its goals, strategies and top accomplishments.

  15. Materials Technologies: Goals, Strategies, and Top Accomplishments (Brochure)

    SciTech Connect

    Not Available

    2010-08-01

    Document details the goals, strategies, and top accomplishments of DOE's Materials Technologies subprogram.

  16. Method of deep drilling

    DOEpatents

    Colgate, Stirling A.

    1984-01-01

    Deep drilling is facilitated by the following steps practiced separately or in any combination: (1) Periodically and sequentially fracturing zones adjacent the bottom of the bore hole with a thixotropic fastsetting fluid that is accepted into the fracture to overstress the zone, such fracturing and injection being periodic as a function of the progression of the drill. (2) Casing the bore hole with ductile, pre-annealed casing sections, each of which is run down through the previously set casing and swaged in situ to a diameter large enough to allow the next section to run down through it. (3) Drilling the bore hole using a drill string of a low density alloy and a high density drilling mud so that the drill string is partially floated.

  17. Characterization of the LiSi/CsBr-LiBr-KBr/FeS(2) System for Potential Use as a Geothermal Borehole Power Source

    SciTech Connect

    GUIDOTTI, RONALD A.; REINHARDT, FREDERICK W.

    1999-10-18

    We are continuing to study the suitability of modified thermal-battery technology as a potential power source for geothermal borehole applications. Previous work focused on the LiSi/FeS{sub 2} couple over a temperature range of 350 C to 400 C with the LiBr-KBr-LiF eutectic, which melts at 324.5 C. In this work, the discharge processes that take place in LiSi/CsBr-LiBr-KBr eutectic/FeS{sub 2} thermal cells were studied at temperatures between 250 C and 400 C using pelletized cells with immobilized electrolyte. The CsBr-LiBr-KBr eutectic was selected because of its lower melting point (228.5 C). Incorporation of a quasi-reference electrode allowed the determination of the relative contribution of each electrode to the overall cell polarization. The results of single-cell tests and limited battery tests are presented, along with preliminary data for battery stacks tested in a simulated geothermal borehole environment.

  18. Studies on Ca2+-Doped CeBr3 Scintillating Materials

    SciTech Connect

    Guss, P. [NSTec; Foster, M. E. [SNL; Wong, B. M. [SNL; Doty, F. P. [SNL; Shah, K. [RMD; Squillante, M. [RMD; Glodo, J. [RMD; Yuan, D. [NSTec

    2013-07-03

    Despite the outstanding scintillation performance characteristics of cerium tribromide (CeBr3) and cerium-activated lanthanum tribromide (LaBr3:Ce), their commercial availability and application is limited due to the difficulties of growing large, crack-free single crystals from these fragile materials. The objective of this investigation was to employ aliovalent doping to increase crystal strength while maintaining the optical properties of the crystal. One divalent dopant (Ca2+) was investigated as a dopant to strengthen CeBr3 without negatively impacting scintillation performance. Ingots containing nominal concentrations of 1.9% of the Ca2+ dopant were grown. Preliminary scintillation measurements are presented for this aliovalently doped scintillator. Ca2+-doped CeBr3 exhibited little or no change in the peak fluorescence emission for 371 nm optical excitation for CeBr3. The structural, electronic, and optical properties of CeBr3 crystals were investigated using the density functional theory within generalized gradient approximation. The calculated lattice parameters are in good agreement with the experimental data. The energy band structures and density of states were obtained. The optical properties of CeBr3, including the dielectric function, were calculated.

  19. Recent Results of Top Quark Physics from the Tevatron

    SciTech Connect

    Peters, R. Y.

    2015-07-09

    Twenty years after its discovery in 1995 by the CDF and D0 collaborations at the Tevatron proton-antiproton collider at Fermilab, the top quark still undergoes intensive studies at the Tevatron and the LHC at CERN. In this article, recent top quark physics results from CDF and D0 are reported. In particular, measurements of single top quark and double top quark production, the $t\\bar{t}$ forward-backward asymmetry and the top quark mass are discussed.

  20. Building America Top Innovations Hall of Fame Profile - Building

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    America's Top Innovations Propel the Home Building Industry toward Higher Performance | Department of Energy Top Innovations Hall of Fame Profile - Building America's Top Innovations Propel the Home Building Industry toward Higher Performance Building America Top Innovations Hall of Fame Profile - Building America's Top Innovations Propel the Home Building Industry toward Higher Performance This Building America Innovations profile describes the concept for the U.S. Department of Energy

  1. Structure and properties of electronic and hole centers in CsBr from theoretical calculations

    SciTech Connect

    Halliday, Matthew T.; Hess, Wayne P.; Shluger, Alexander L.

    2015-06-24

    The electronic structure, geometry, diffusion barriers and optical properties of fundamental defects of CsBr are calculated using hybrid functional DFT and TD- DFT methods. The B3LYP functional with a modified exchange contribution has been used in an embedded cluster scheme to model the structure and spectroscopic properties of self-trapped triplet exciton, interstitial Br atoms and ions, self-trapped holes and Br vacancies. The calculated migration barriers and positions of maxima of optical absorption bands are in good agreement with experiment, justifying the obtained defect geometries. The o*-center triplet exciton luminescence energy is also accurately calculated.

  2. Guide to Developing Air-Cooled Lithium Bromide (LiBr) Absorption for CHP

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Applications, April 2005 | Department of Energy Developing Air-Cooled Lithium Bromide (LiBr) Absorption for CHP Applications, April 2005 Guide to Developing Air-Cooled Lithium Bromide (LiBr) Absorption for CHP Applications, April 2005 The objective of this paper is to summarize the development status of air-cooled lithium bromide (LiBr)-water absorption chillers to guide future efforts to develop chillers for combined heat and power (CHP) applications in light-commercial buildings. The key

  3. Measurement of the Ratio of Branching Fractions Br(Bs -> Ds- pi+)/Br(B -> D- pi+) at CDF-II

    SciTech Connect

    Furic, Ivan Kresimir; /MIT

    2004-03-01

    The measurement of B{sub s}{sup 0} mixing is one of the flagship analyses for the Run II B physics program. The sensitivity of the measurement to the frequency of B{sub s}{sup 0} oscillations strongly depends on the number of reconstructed B{sub s}{sup 0} mesons. They present the measurement of the ratio of branching fractions Br(B{sub s}{sup 0} {yields} D{sub s}{sup -}{pi}{sup +})/Br(B{sup 0} {yields} D{sup -}{pi}{sup +}), which directly influences the number of B{sub s}{sup 0} events available for the measurement of B{sub s}{sup 0} mixing at CDF-II. They analyze 115 pb{sup -1} of data collected with the CDF-II detector in p{bar p} collisions at {radical}s = 1.96 TeV using a novel displaced track trigger. They reconstruct 78 {+-} 11 B{sub s}{sup 0} {yields} D{sub s}{sup -}{pi}{sup +} decays at 1153 {+-} 45 B{sup 0} {yields} D{sup -}{pi}{sup +} decays with good signal to background ratio. This is the world's largest sample of fully reconstructed B{sub s}{sup 0} {yields} D{sub s}{sup -}{pi}{sup +} decays. They find the ratio of production fractions multiplied by the ratio of branching fractions to be: f{sub s}/f{sub d} {center_dot} Br(B{sub s}{sup 0} {yields} D{sub s}{sup -}{pi}{sup +})/Br(B{sup 0} {yields} D{sup -}{pi}{sup +}) = 0.325 {+-} 0.046(stat) {+-} 0.034(syst) {+-} 0.084 (BR). Using the world average value of f{sub s}/f{sub d} = 0.26 {+-} 0.03, we infer that the ratio of branching fractions is: Br(B{sub s}{sup 0} {yields} D{sub s}{sup -}{pi}{sup +})/Br(B{sup 0} {yields} D{sup -}{pi}{sup +}) = 1.25 {+-} 0.18(stat) {+-} 0.13(syst) {+-} 0.32(BR) {+-} 0.14(PR) where the last uncertainty is due to the uncertainty on the world average measurement of the ratio of B{sub s}{sup 0} to B{sup 0} production rates, f{sub s}/f{sub d}.

  4. Operating a blast furnace using dried top gas

    SciTech Connect

    Kundrat, D.M.

    1993-08-10

    A method is described of operating a blast furnace, comprising: introducing into the top of the furnace a charge containing metal oxide, coke and flux, collecting a top gas CO, H[sub 2], carbon dioxide and water from the furnace, increasing the reducing potential of said collected top gas by removing water but without removing carbon dioxide from at least a portion of said collected top gas thereby forming a dried top gas, heating said dried top gas to form a heated dried top gas, introducing said heated dried top gas into the lower half of the stack of the furnace at a position above which said coke is not reactive and introducing an oxygen-containing gas and a hydrogenaceous fuel into the bosh of the furnace whereby said metal oxide is reduced to a molten metal using said heated dried top gas.

  5. The heavy top quark and supersymmetry

    SciTech Connect

    Hall, L.J.

    1997-01-01

    Three aspects of supersymmetric theories are discussed: electroweak symmetry breaking, the issues of flavor, and gauge unification. The heavy top quark plays an important, sometimes dominant, role in each case. Additional symmetries lead to extensions of the Standard Model which can provide an understanding for many of the outstanding problems of particle physics. A broken supersymmetric extension of spacetime allows electroweak symmetry breaking to follow from the dynamics of the heavy top quark; an extension of isospin provides a constrained framework for understanding the pattern of quark and lepton masses; and a grand unified extension of the Standard Model gauge group provides an elegant understanding of the gauge quantum numbers of the components of a generation. Experimental signatures for each of these additional symmetries are discussed.

  6. Top quark and electroweak results from CDF

    SciTech Connect

    Sandra Leone

    2003-11-04

    In 2001 the Tevatron run II began, after a five year period of significant upgrade of the accelerator itself and of the experiments CDF and D0. After a detector commissioning run, the CDF experiment is now taking high quality data with all subsystems functional. We report in this talk the first preliminary CDF results on top quark and W/Z boson properties, based on run II data. The top quark, discovered in 1995 at the Tevatron, has proven to be a very interesting particle. Its properties allow to perform stringent tests of the Standard Model (SM) and to search for new physics through a deviation from SM predictions. We give here some expectations of what Tevatron run II will ultimately provide to our understanding of matter.

  7. Oxidation/Reduction Reactions at the Metal Contact-TlBr Interface...

    Office of Scientific and Technical Information (OSTI)

    Title: OxidationReduction Reactions at the Metal Contact-TlBr Interface: An X-ray Photoelectron Spectroscopy Study Authors: Nelson, A J ; Swanberg, E L ; Voss, L F ; Graff, R T ; ...

  8. LAKESHORE AVON BR ANT-EDEN ALD EN-LANC ASTER AU BURN W SH ELDON

    Energy Information Administration (EIA) (indexed site)

    81 81 LAKESHORE AVON BR ANT-EDEN ALD EN-LANC ASTER AU BURN W SH ELDON CALEDONIA HURON C REEK LEIC EST ER COL DEN ASH FORD INDIAN FALLS LAWTONS SAR DINIA RPD-037 -2 ...

  9. Hydrogen for X-group exchange in CH3X, X = Cl, Br, I, OMe and...

    Office of Scientific and Technical Information (OSTI)

    Hydrogen for X-group exchange in CH3X, X Cl, Br, I, OMe and NMe2 byMonomeric ... Citation Details In-Document Search Title: Hydrogen for X-group exchange in CH3X, X Cl, ...

  10. NREL'S Zunger Receives Top Scientific Honors

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Top Scientific Honors For more information contact: Gary Schmitz, 303-275-4050 email: Gary Schmitz Golden, Colo., Nov. 29, 2000 - Alex Zunger, a physicist and research fellow at the U.S. Department of Energy's National Renewable Energy Laboratory, has been named the 2001 recipient of the prestigious Rahman Award by the American Physical Society (APS). The award from the APS is bestowed once annually to an individual for "outstanding achievement in computational physics research."

  11. 2016 Top Markets Report Renewable Fuels

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Assessment Tool for Focusing U.S. Government Resources 2016 Top Markets Report U.S. Department of Commerce International Trade Administration Industry & Analysis (I&A) U.S. Department of Commerce International Trade Administration Industry & Analysis (I&A) Renewable Fuels July 13, 2015 Bioenergy 2016 Washington, DC International Trade Administration - Industry & Analysis (I&A) 2 Presentation Outline USG Programs and Services for Bioenergy Exporters  The International

  12. Rare top quark decays in extended models

    SciTech Connect

    Gaitan, R.; Miranda, O. G.; Cabral-Rosetti, L. G.

    2006-09-25

    Flavor changing neutral currents (FCNC) decays t {yields} H0 + c, t {yields} Z + c, and H0 {yields} t + c-bar are discussed in the context of Alternative Left-Right symmetric Models (ALRM) with extra isosinglet heavy fermions where FCNC decays may take place at tree-level and are only suppressed by the mixing between ordinary top and charm quarks, which is poorly constraint by current experimental values. The non-manifest case is also briefly discussed.

  13. Tracking down hyper-boosted top quarks

    DOE PAGES [OSTI]

    Larkoski, Andrew J.; Maltoni, Fabio; Selvaggi, Michele

    2015-06-05

    The identification of hadronically decaying heavy states, such as vector bosons, the Higgs, or the top quark, produced with large transverse boosts has been and will continue to be a central focus of the jet physics program at the Large Hadron Collider (LHC). At a future hadron collider working at an order-of-magnitude larger energy than the LHC, these heavy states would be easily produced with transverse boosts of several TeV. At these energies, their decay products will be separated by angular scales comparable to individual calorimeter cells, making the current jet substructure identification techniques for hadronic decay modes not directlymore » employable. In addition, at the high energy and luminosity projected at a future hadron collider, there will be numerous sources for contamination including initial- and final-state radiation, underlying event, or pile-up which must be mitigated. We propose a simple strategy to tag such "hyper-boosted" objects that defines jets with radii that scale inversely proportional to their transverse boost and combines the standard calorimetric information with charged track-based observables. By means of a fast detector simulation, we apply it to top quark identification and demonstrate that our method efficiently discriminates hadronically decaying top quarks from light QCD jets up to transverse boosts of 20 TeV. Lastly, our results open the way to tagging heavy objects with energies in the multi-TeV range at present and future hadron colliders.« less

  14. Observation of Single Top Quark Production

    SciTech Connect

    Gerber, Cecilia E.; /Illinois U., Chicago

    2009-09-01

    The author reports on the observation of electroweak production of single top quarks in p{bar p} collisions at {radical}s = 1.96 Tev using 2.3 fb{sup -1} of data collected with the D0 detector at the fermilab Tevatron Collider. Using events containing an isolated electron or muon, missing transverse energy, two, three or four jets, with one or two of them identified as originating from the fragmentation of a b quark, the measured cross section for the process p{bar p} {yields} tb + X, tqb + X is 3.94 {+-} 0.88 pb (for a top quark mass of 170 GeV). the probability to measure a cross section at this value or higher in the absence of signal is 2.5 x 10{sup -7}, corresponding to a 5.0 standard deviation significance. Using the same dataset, the measured cross sections for the t- and the s-channel processes when determined simultaneously with no assumption on their relative production rate are 3.14{sub -0.80}{sup +0.94} pb and 1.05 {+-} 0.81 pb respectively, consistent with standard model expectations. The measured t-channel cross section has a significance of 4.8 standard deviations, representing the first evidence for the production of an individual single top process to be detected.

  15. Dark decay of the top quark

    DOE PAGES [OSTI]

    Kong, Kyoungchul; Lee, Hye -Sung; Park, Myeonghun

    2014-04-01

    We suggest top quark decays as a venue to search for light dark force carriers. Top quark is the heaviest particle in the standard model whose decays are relatively poorly measured, allowing sufficient room for exotic decay modes from new physics. A very light (GeV scale) dark gauge boson (Z') is a recently highlighted hypothetical particle that can address some astrophysical anomalies as well as the 3.6 σ deviation in the muon g-2 measurement. We present and study a possible scenario that top quark decays as t → b W + Z's. This is the same as the dominant topmore » quark decay (t → b W) accompanied by one or multiple dark force carriers. The Z' can be easily boosted, and it can decay into highly collimated leptons (lepton-jet) with large branching ratio. In addition, we discuss the implications for the Large Hadron Collider experiments including the analysis based on the lepton-jets.« less

  16. Tracking down hyper-boosted top quarks

    SciTech Connect

    Larkoski, Andrew J.; Maltoni, Fabio; Selvaggi, Michele

    2015-06-05

    The identification of hadronically decaying heavy states, such as vector bosons, the Higgs, or the top quark, produced with large transverse boosts has been and will continue to be a central focus of the jet physics program at the Large Hadron Collider (LHC). At a future hadron collider working at an order-of-magnitude larger energy than the LHC, these heavy states would be easily produced with transverse boosts of several TeV. At these energies, their decay products will be separated by angular scales comparable to individual calorimeter cells, making the current jet substructure identification techniques for hadronic decay modes not directly employable. In addition, at the high energy and luminosity projected at a future hadron collider, there will be numerous sources for contamination including initial- and final-state radiation, underlying event, or pile-up which must be mitigated. We propose a simple strategy to tag such "hyper-boosted" objects that defines jets with radii that scale inversely proportional to their transverse boost and combines the standard calorimetric information with charged track-based observables. By means of a fast detector simulation, we apply it to top quark identification and demonstrate that our method efficiently discriminates hadronically decaying top quarks from light QCD jets up to transverse boosts of 20 TeV. Lastly, our results open the way to tagging heavy objects with energies in the multi-TeV range at present and future hadron colliders.

  17. Measurement of BR(Bu to phi K)/BR(Bu to J/psi K) at the collider detector at Fermilab

    SciTech Connect

    Napora, Robert A

    2004-10-01

    This thesis presents evidence for the decay mode B{sup {+-}} {yields} {phi}K{sup {+-}} in p{bar p} collisions at {radical}s = 1.96 TeV using (120 {+-} 7)pb{sup -1} of data collected by the Collider Detector at Fermilab (CDF). This signal is then used to measure the branching ratio relative to the decay mode B{sup {+-}} {yields} J/{psi}K{sup {+-}}. The measurement starts from reconstructing the two decay modes: B{sup {+-}} {yields} {phi}K{sup {+-}}, where {phi} {yields} K{sup +}K{sup -} and B{sup {+-}} {yields} J/{psi}K{sup {+-}}, where J/{psi} {yields} {mu}{sup +}{mu}{sup -}. The measurement yielded 23 {+-} 7 B{sup {+-}} {yields} {phi}K{sup {+-}} events, and 406 {+-} 26 B{sup {+-}} {yields} J/{psi}K{sup {+-}} events. The fraction of B{sup {+-}} {yields} J/{psi}K{sup {+-}} events where the J/{psi} subsequently decayed to two muons (as opposed to two electrons) was found to be f{sub {mu}{mu}} = 0.839 {+-} 0.066. The relative branching ratio of the two decays is then calculated based on the equation: BR(B{sup {+-}} {yields} {phi}K{sup {+-}})/BR(B{sup {+-}} {yields} J/{psi}K{sup {+-}}) = N{sub {phi}K}/N{sub {psi}K} {center_dot}f{sub {mu}{mu}} BR(J/{psi} {yields} {mu}{sup +}{mu}{sup -})/BR({phi} {yields} K{sup +}K{sup -}) {epsilon}{sub {mu}{mu}}K/{epsilon}KKK R({epsilon}{sub iso}). The measurement finds BR(B{sup {+-}} {yields} {phi}K{sup {+-}})/BR(B{sup {+-}} {yields} J/{psi}K{sup {+-}}) = 0.0068 {+-} 0.0021(stat.) {+-} 0.0007(syst.). The B{sup {+-}} {yields} {phi}K{sup {+-}} branching ratio is then found to be BR(B{sup {+-}} {yields} {phi}K{sup {+-}}) = [6.9 {+-} 2.1(stat.) {+-} 0.8(syst.)] x 10{sup -6}. This value is consistent with similar measurements reported by the e{sup +}e{sup -} collider experiments BaBar[1], Belle[2], and CLEO[3].

  18. Deep Vadose Zone - Hanford Site

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Documents Deep Vadose Zone Documents Documents Hanford Site Cleanup Completion Framework Tri-Party Agreement Freedom of Information and Privacy Act Hanford Site Budget Hanford Site Safety Standards DOE - ORP Contracts/Procurements DOE - RL Contracts/Procurements Integrated Waste Feed Delivery Plan Single-Shell Tank Evaluations Deep Vadose Zone 100-F RI/FS 100-D/H Operable Units RI/FS Sitewide Probabilistic Seismic Hazard Analysis Environmental Email Email Page | Print Print Page | Text Increase

  19. Measurement of cross section of quark pair production top with...

    Office of Scientific and Technical Information (OSTI)

    cross section of quark pair production top with the D0 experiment at the Tevatron and determination the top quark mass using this measure Citation Details In-Document Search Title: ...

  20. Advanced Technologies and Practices - Building America Top Innovations...

    Office of Environmental Management (EM)

    These Top Innovations ensure a healthy and non-hazardous building environment. 2014 Top Innovation ASHRAE Standard 62.2. Ventilation and Indoor Air Quality in Low-Rise Residential ...

  1. Measurement of the top quark pair production cross section in...

    Office of Scientific and Technical Information (OSTI)

    Measurement of the top quark pair production cross section in proton-proton collisions at sqrts13 TeV Citation Details In-Document Search Title: Measurement of the top quark...

  2. The Business Case for Fuel Cells 2011: Energizing America's Top...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    The Business Case for Fuel Cells 2011: Energizing America's Top Companies This report ... The Business Case for Fuel Cells 2011: Energizing America's Top Companies (2.22 MB) More ...

  3. Top of the World (GE) | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    GE) Jump to: navigation, search Name Top of the World (GE) Facility Top of the World (GE) Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner...

  4. Prof. Robinson named as an emerging top scientist in Materials...

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Robinson named as an emerging top scientist in Materials Chemistry April 23rd, 2014 ... Boards of the Journal of Materials Chemistry A as one of the emerging top scientists ...

  5. Satellite Television Industry Meeting Regarding DOE Set-Top Box...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Satellite Television Industry Meeting Regarding DOE Set-Top Box Rulemaking Satellite Television Industry Meeting Regarding DOE Set-Top Box Rulemaking On April 3, 2012 at 11:00 AM, ...

  6. Los Alamos National Laboratory again top contributor to United...

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Top contributor to United Way ff Santa Fe County Los Alamos National Laboratory again top contributor to United Way of Santa Fe County Laboratory employees and Los Alamos National...

  7. Building America Top Innovations 2013 Profile - Zero Energy-Ready...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Building America Top Innovations 2013 Profile - Zero Energy-Ready Single-Family Homes Building America Top Innovations 2013 Profile - Zero Energy-Ready Single-Family Homes Many ...

  8. Electroweak and QCD corrections to top-pair hadroproduction in...

    Office of Scientific and Technical Information (OSTI)

    Electroweak and QCD corrections to top-pair hadroproduction in association with heavy bosons Citation Details In-Document Search Title: Electroweak and QCD corrections to top-pair ...

  9. Programs and Contractors - Top Tips for Successful Relationships...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Programs and Contractors - Top Tips for Successful Relationships (101) Programs and Contractors - Top Tips for Successful Relationships (101) October 22, 2015 1:00PM to 2:30PM...

  10. Wind Energy Program: Top 10 Program Accomplishments | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Wind Energy Program: Top 10 Program Accomplishments Wind Energy Program: Top 10 Program Accomplishments Brochure on the top accomplishments of the Wind Energy Program, including the development of large wind machines, small machines for the residential market, wind tunnel testing, computer codes for modeling wind systems, high definition wind maps, and successful collaborations. top_10_wind_accomplishments (1.84 MB) More Documents & Publications Wind Program Accomplishments Wind Power Today,

  11. Advanced Technologies and Practices - Building America Top Innovations |

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Department of Energy Advanced Technologies and Practices - Building America Top Innovations Advanced Technologies and Practices - Building America Top Innovations July 16, 2014 - 4:04pm Addthis Advanced Technologies and Practices - Building America Top Innovations Top Innovations in this category encompass research in specific technologies and construction practices that improve the building envelope; heating, ventilation, and air conditioning (HVAC); water heating components; and indoor air

  12. America's Next Top Energy Innovator Challenge | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Innovation » America's Next Top Energy Innovator » America's Next Top Energy Innovator Challenge America's Next Top Energy Innovator Challenge The America's Next Top Energy Innovator Challenge, a part of the Startup America initiative, made it easier for start-ups to use inventions and technology developed at the U.S. Department of Energy's 17 National Laboratories and the Y-12 National Security Complex. The companies highlighted below signed option agreements allowing them to license

  13. Building America Top Innovations 2012: Unvented Crawlspaces Code Adoption

    SciTech Connect

    none,

    2013-01-01

    This Building America Top Innovations profile describes Building America research which has supported acceptance of unvented crawlspaces in the IRC.

  14. Top ECMs for Labs and Data Centers | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Top ECMs for Labs and Data Centers Top ECMs for Labs and Data Centers Presentation-given at at the Fall 2012 Federal Utility Partnership Working Group (FUPWG) meeting-covers the top energy conservation measures (ECMs) laboratories and data centers can apply for energy efficiency and savings. Download the Top ECMs for Labs and Data Centers presentation. (3.34 MB) More Documents & Publications A Sustainable Focus for Laboratory Design, Engineering, and Operation Case Study: Innovative Energy

  15. Announcing the "Top 10" List of Green Utility Leaders

    Energy.gov [DOE]

    Find out if your utility made the National Renewable Energy Laboratory's list of top green power programs.

  16. LANL announces Top 10 science & technology developments of 2010

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    2010 top 10 science & technology developments LANL announces Top 10 science & technology developments of 2010 Top 10 developments based on major programmatic milestones, strategic potential, scholarly accounts, and associated news coverage. December 20, 2010 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

  17. LANL announces top 10 science stories of 2009

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Top 10 science stories of 2009 LANL announces top 10 science stories of 2009 Top 10 Laboratory science stories of 2009 based on global viewership of online media content and major programmatic milestones. January 8, 2010 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 Alamos

  18. Vehicle Technologies Program: Goals, Strategies, and Top Accomplishments

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    (Brochure), Vehicle Technologies Program (VTP) | Department of Energy Program: Goals, Strategies, and Top Accomplishments (Brochure), Vehicle Technologies Program (VTP) Vehicle Technologies Program: Goals, Strategies, and Top Accomplishments (Brochure), Vehicle Technologies Program (VTP) vtp_goals-strategies-accomp.pdf (1.41 MB) More Documents & Publications Advanced Combustion Engine R&D: Goals, Strategies, and Top Accomplishments Materials Technologies: Goals, Strategies, and Top

  19. Diesel prices top $4 per gallon

    Energy Information Administration (EIA) (indexed site)

    Diesel prices top $4 per gallon The U.S. average retail price for on-highway diesel fuel surpassed the four dollar mark for the first time this year. Prices rose to $4.02 a gallon on Monday. That's up 9 ½ cents from a week ago, based on the weekly price survey by the U.S. Energy Information Administration. Prices were highest in the New England region, at 4.24 a gallon, up 5.6 cents from a week ago. Prices were lowest in the Rocky Mountain States at $3.84 a gallon, up almost 11 cents. This is

  20. Top Event Matrix Analysis Code System.

    Energy Science and Technology Software Center

    2000-06-19

    Version 00 TEMAC is designed to permit the user to easily estimate risk and to perform sensitivity and uncertainty analyses with a Boolean expression such as produced by the SETS computer program. SETS produces a mathematical representation of a fault tree used to model system unavailability. In the terminology of the TEMAC program, such a mathematical representation is referred to as a top event. The analysis of risk involves the estimation of the magnitude ofmore » risk, the sensitivity of risk estimates to base event probabilities and initiating event frequencies, and the quantification of the uncertainty in the risk estimates.« less

  1. Top 10 science stories of the year

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    of Energy Combined Heat and Power Top 10 Things You Didn't Know About Combined Heat and Power October 21, 2013 - 11:25am Addthis Learn how combined heat and power could strengthen U.S. manufacturing competitiveness, lower energy consumption and reduce harmful emissions. | Infographic by <a href="/node/379579">Sarah Gerrity</a>, Energy Department. Learn how combined heat and power could strengthen U.S. manufacturing competitiveness, lower energy consumption and reduce

  2. America's Next Top Energy Model: Tools and Best Practices (101) |

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Department of Energy America's Next Top Energy Model: Tools and Best Practices (101) America's Next Top Energy Model: Tools and Best Practices (101) December 1, 2016 1:00PM to 2:30PM EST Please join this Better Buildings Residential Network peer exchange call to see which top energy models will be strutting their stuff down the runway

  3. Collider Detector at Fermilab (CDF): Data from the Top Group's Top Quark Research

    DOE Data Explorer

    The Collider Detector at Fermilab (CDF) is a Tevatron experiment at Fermilab. The Tevatron, a powerful particle accelerator, accelerates protons and antiprotons close to the speed of light, and then makes them collide head-on inside the CDF detector. The CDF detector is used to study the products of such collisions. The CDF Physics Group at Fermilab is organized into six working groups, each with a specific focus. The Top group studies the properties of the top quark, the heaviest known fundamental particle. Their public web page makes data and numerous figures available from both CDF Runs I and II.

  4. Top 100 Oil and Gas Fields of 2009

    Energy Information Administration (EIA) (indexed site)

    Top 100 Oil and Gas Fields of 2009 Introduction This supplement to the Energy Information Administration's summary of U.S. Crude Oil, Natural Gas, and Natural Gas Liquids Proved Reserves, 2009 ranks the United States' largest oil and gas fields by their estimated 2009 proved reserves. The Top 100's Share of U.S. Proved Reserves in 2009 The Top 100 oil fields and Top 100 gas fields each accounted for about 60 percent of the respective total proved reserves of the United States. The Top 100 oil

  5. Searches for New Physics in Top Decays at D0

    SciTech Connect

    Pleier, Marc-Andre; /Brookhaven

    2011-08-01

    The Tevatron proton-antiproton collider at Fermilab with its centre of mass energy of 1.96 TeV allows for pair production of top quarks and the study of top quark decay properties. This report reflects the current status of measurements of the W boson helicity in top quark decays and the ratio of top quark branching fractions as well as searches for neutral current top quark decays and pair production of fourth generation t' quarks, performed by the D0 Collaboration utilising datasets of up to 5.4 fb{sup -1}.

  6. Summary of Single top quark production at the Tevatron

    SciTech Connect

    Schwienhorst, R.; CDF, on the

    2014-01-01

    The production of single-top quarks occurs via the weak interaction at the Fermilab Tevatron proton-antiproton collider. Single top quark events are selected in the lepton+jets final state by CDF and D0 and in the missing transverse energy plus jets final state by CDF. Multivariate classifiers separate the s-channel and t-channel single-top signals from the large backgrounds. The combination of CDF and D0 results leads to the first observation of the s-channel mode of single top quark production. The t-channel and single top combined cross sections have also been measured.

  7. Los Alamos National Laboratory top science news of 2012

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Los Alamos National Laboratory top science news of 2012 Los Alamos National Laboratory top science news of 2012 Top science stories for the year traveled from the canyons of Mars to the high desert forests of New Mexico, from cosmic particles to the structure of proteins and enzymes. December 20, 2012 Top science stories for the year traveled from the canyons of Mars to the high desert forests of New Mexico, from cosmic particles to the structure of proteins and enzymes. Top science stories for

  8. Other: Small Reactor for Deep Space Exploration | ScienceCinema

    Office of Scientific and Technical Information (OSTI)

    Small Reactor for Deep Space Exploration Citation Details Title: Small Reactor for Deep Space Exploration

  9. Very fast doped LaBr.sub.3 scintillators and time-of-flight PET

    DOEpatents

    Shah, Kanai S.

    2006-10-31

    The present invention concerns very fast scintillator materials capable of resolving the position of an annihilation event within a portion of a human body cross-section. In one embodiment, the scintillator material comprises LaBr.sub.3 doped with cerium. Particular attention is drawn to LaBr.sub.3 doped with a quantity of Ce that is chosen for improving the timing properties, in particular the rise time and resultant timing resolution of the scintillator, and locational capabilities of the scintillator.

  10. Going Deep vs. Going Wide

    Energy.gov [DOE]

    Going Deep vs. Going Wide, from the Residential Energy Efficiency Solutions Conference 2012. Provides an overview on the progress of four energy efficiency programs: Clean Energy Works Oregon, Efficiency Maine, Energy Upgrade California Flex Path, and EcoHouse Loan Program.

  11. Stimulation Technologies for Deep Well Completions

    SciTech Connect

    Stephen Wolhart

    2005-06-30

    The Department of Energy (DOE) is sponsoring the Deep Trek Program targeted at improving the economics of drilling and completing deep gas wells. Under the DOE program, Pinnacle Technologies conducted a study to evaluate the stimulation of deep wells. The objective of the project was to review U.S. deep well drilling and stimulation activity, review rock mechanics and fracture growth in deep, high-pressure/temperature wells and evaluate stimulation technology in several key deep plays. This report documents results from this project.

  12. Angular correlations in top quark decays in standard model extensions

    SciTech Connect

    Batebi, S.; Etesami, S. M.; Mohammadi-Najafabadi, M.

    2011-03-01

    The CMS Collaboration at the CERN LHC has searched for the t-channel single top quark production using the spin correlation of the t-channel. The signal extraction and cross section measurement rely on the angular distribution of the charged lepton in the top quark decays, the angle between the charged lepton momentum and top spin in the top rest frame. The behavior of the angular distribution is a distinct slope for the t-channel single top (signal) while it is flat for the backgrounds. In this Brief Report, we investigate the contributions which this spin correlation may receive from a two-Higgs doublet model, a top-color assisted technicolor (TC2) and the noncommutative extension of the standard model.

  13. Loan Guarantee Recipient Awarded Top Renewable Plant | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Top Renewable Plant Loan Guarantee Recipient Awarded Top Renewable Plant December 16, 2015 - 10:00am Addthis Loan Guarantee Recipient Awarded Top Renewable Plant Mark A. McCall Mark A. McCall Executive Director of the Loan Programs Office The Department's Loan Programs Office (LPO) has provided financing for numerous award-winning clean energy projects. The latest is Desert Sunlight, a 550-megawatt (MW) photovoltaic (PV) solar power plant located in Riverside County, California, that was issued

  14. Low-Cost Ventilation in Production Housing - Building America Top

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Innovation | Department of Energy Low-Cost Ventilation in Production Housing - Building America Top Innovation Low-Cost Ventilation in Production Housing - Building America Top Innovation This drawing shows simple and cost-effective ventilation strategies for homes. As high-performance homes get more air tight and better insulated, attention to good indoor air quality becomes essential. This Top Innovation profile describes Building America research by Building Science Corporation to develop

  15. Building Science-Based Climate Maps - Building America Top Innovation |

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Department of Energy Building Science-Based Climate Maps - Building America Top Innovation Building Science-Based Climate Maps - Building America Top Innovation Photo showing climate zone maps based on the IECC climate zone map. It may not be intuitively obvious why a U.S. climate zone map is so important to the construction industry. Thanks to this Building America Top Innovation, building science education, energy code development, and residential design can much more effectively integrate

  16. Building America Top Innovations Hall of Fame Profile - Building Energy

    Energy Saver

    Optimization Analysis Method (BEopt) | Department of Energy America Top Innovations Hall of Fame Profile - Building Energy Optimization Analysis Method (BEopt) Building America Top Innovations Hall of Fame Profile - Building Energy Optimization Analysis Method (BEopt) 3_3a_ba_innov_beopt_011713.pdf (877.48 KB) More Documents & Publications Building Energy Optimization Analysis Method (BEopt) - Building America Top Innovation BEopt Version 2.0: New Features Building America Webinar:

  17. Exterior Rigid Insulation Best Practices - Building America Top Innovation

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    | Department of Energy Exterior Rigid Insulation Best Practices - Building America Top Innovation Exterior Rigid Insulation Best Practices - Building America Top Innovation Effec guid-exterior rigid insulation.jpg For years, Building America research teams have advocated using the thermal, air, and vapor properties of rigid foam sheathing insulation to improve walls. Several teams earned a 2013 Top Innovation award for their research into this technology. The NorthernSTAR team's

  18. 2016 Top Markets Report: Renewable Fuels | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Top Markets Report: Renewable Fuels 2016 Top Markets Report: Renewable Fuels Plenary IV: Policy for the Bioeconomy-Local, State, Federal, and International Perspectives 2016 Top Markets Report: Renewable Fuels Cora Dickson, Senior International Trade Specialist, U.S. Department of Commerce dickson_bioenergy_2016.pdf (1.39 MB) More Documents & Publications International Market Opportunities in Bioenergy: Leveraging U.S. Government Resources Market Drivers for Biofuels 2015 Peer Review

  19. Top Quark Pair Production Cross Section at the Tevatron

    SciTech Connect

    Peters, Reinhild Yvonne

    2015-09-25

    The top quark, discovered in 1995 by the CDF and D0 collaborations at the Tevatron proton antiproton collider at Fermilab, has undergone intense studies in the last 20 years. Currently, CDF and D0 converge on their measurements of top-antitop quark production cross sections using the full Tevatron data sample. In these proceedings, the latest results on inclusive and differential measurements of top-antitop quark production cross sections at the Tevatron are reported.

  20. EM Recovery Act Top Line Messages | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Top Line Messages EM Recovery Act Top Line Messages The latest Recovery Act performance related information and metrics. EM Recovery Act Top Line Messages - April, 2013 (1.96 MB) More Documents & Publications Workers at Hanford Site Achieve Recovery Act Legacy Cleanup Goals Ahead of Schedule Audit Report: IG-0426 Testimony of Mark Whitney Principal Deputy Assistant Secretary for Environmental Management Before the Subcommittee on Environment and the Economy House Energy and Commerce

  1. Model Simulating Real Domestic Hot Water Use - Building America Top

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Innovation | Department of Energy Model Simulating Real Domestic Hot Water Use - Building America Top Innovation Model Simulating Real Domestic Hot Water Use - Building America Top Innovation Image of a pipe insulation.jpg As progress continues with high-R, tightly sealed thermal enclosures, domestic hot water becomes an increasingly important energy use in high-performance homes. This Top Innovation describes Building America research by Alliance for Residential Building Innovation and the

  2. Cyclotron Road: Creating a Home for Top Clean Energy Technology

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Entrepreneurs within our National Laboratories | Department of Energy Cyclotron Road: Creating a Home for Top Clean Energy Technology Entrepreneurs within our National Laboratories Cyclotron Road: Creating a Home for Top Clean Energy Technology Entrepreneurs within our National Laboratories September 2, 2015 - 10:53am Addthis Cyclotron Road: Creating a Home for Top Clean Energy Technology Entrepreneurs within our National Laboratories David Danielson Former Assistant Secretary for the Office

  3. Building America 1995-2012 Top Innovations | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    America 1995-2012 Top Innovations Building America 1995-2012 Top Innovations This page provides a listing of and links to legacy Building America Top Innovations developed from 1995-2012. Advanced Technologies and Practices Building Science Solutions Thermal Enclosure: Basement Insulation Systems Advanced Framing Systems and Packages Unvented, Conditioned Crawlspaces Unvented, Conditioned Attics High-R Walls Optimized Comfort Systems: Integration of HVAC System Design with Simplified Duct

  4. Building America 2013 Top Innovations | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Top Innovations Building America 2013 Top Innovations This page provides a listing of and links to Building America Top Innovations awarded in 2013. Advanced Technologies and Practices Building Science Solutions Thermal Enclosure: Next Generation Advanced Framing Optimized Comfort Systems: Buried and Encapsulated Ducts Furnace Blower Performance Improvements High Efficiency Window Air Conditioners House-as-a-System Business Case Zero Energy Ready Single Family Homes Effective Guidance and Tools

  5. Building America 2014 Top Innovations | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Building America 2014 Top Innovations Building America 2014 Top Innovations This page provides a listing of and links to Building America Top Innovations awarded in 2014. Advanced Technologies and Practices BUILDING SCIENCE SOLUTIONS Thermal Enclosure: Cost-Optimized Attic Insulation Solution for Factory-Built Homes OPTIMIZED COMFORT SOLUTIONS HVAC Cabinet Air Leakage Test Method California Energy Standards Recognize the Importance of Filter Selection ASSURED HEALTH AND SAFETY ASHRAE Standard

  6. The Top Quark, Its Discovery, and Subsequent Research

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    The Top Quark, Its Discovery, and Subsequent Research Resources with Additional Information 'Ever since the existence of the bottom (or b) quark was inferred from the discovery of the Upsilon family of resonances at Fermilab in 1977, particle physicists have been on the lookout for its partner, called top (or t). The long search, which occupied experimenters at laboratories around the world, came to a successful conclusion in February 1995 with the announcement that the top quark had been

  7. Top 10 Vulnerabilities of Control Systems and Their Associated Migitations

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    (2006) | Department of Energy Top 10 Vulnerabilities of Control Systems and Their Associated Migitations (2006) Top 10 Vulnerabilities of Control Systems and Their Associated Migitations (2006) This document addresses potential risks that can apply to some electricity sector organizations and provides practices that can help mitigate the risks. Each organization decides for itself the risks it can accept and the practices it deems appropriate to manage those risks. Top 10 Vulnerabilities of

  8. Tankless Gas Water Heater Performance - Building America Top Innovation |

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Department of Energy Tankless Gas Water Heater Performance - Building America Top Innovation Tankless Gas Water Heater Performance - Building America Top Innovation This photo shows a hot water heater measuring device mounted on the outside of a building wall. As improved thermal enclosures dramatically reduce heating and cooling loads, the water heating load continues to grow in importance. This Top Innovations profile describes Building America field testing by IBACOS that shed light on

  9. Basement Insulation Systems - Building America Top Innovation | Department

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    of Energy Basement Insulation Systems - Building America Top Innovation Basement Insulation Systems - Building America Top Innovation This photo shows a framed basement wall with insulation in between the studs. Efficient and durable construction practices for basements are critical because basements can account for 10% to 30% of a home's total heat loss and provide significant risk of moisture problems due to extensive cold surfaces at the walls and slab. For this Top Innovation award,

  10. Dateline Los Alamos: Top science news of 2014

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Top science news of 2014 Dateline Los Alamos: Top science news of 2014 Los Alamos National Laboratory today announced its annual top science stories of 2014. December 22, 2014 Los Alamos National Laboratory postdoctoral researcher Elena Guardincerri, right, and undergraduate research assistant Shelby Fellows prepare a lead hemisphere inside a muon tomography machine, which can peer inside closed containers and provide detailed images of dense objects such as nuclear materials or other items of

  11. Unvented Crawlspace Code Adoption - Building America Top Innovation |

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Department of Energy Unvented Crawlspace Code Adoption - Building America Top Innovation Unvented Crawlspace Code Adoption - Building America Top Innovation Photo of an unvented and insulated crawlspace. This Top Innovation profile describes Building America research by Building Science Corporation that helped to clarify and contribute to code requirements that allow unvented crawlspaces in new home construction. This is critical because unvented crawlspaces save energy while improving

  12. Valuing Green in the Appraisal Process - Building America Top Innovation |

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Department of Energy Valuing Green in the Appraisal Process - Building America Top Innovation Valuing Green in the Appraisal Process - Building America Top Innovation Real estate appraisers have historically faced challenges with green and energy efficient homes, both in identifying comparables and in supporting adjustments for improvements. These difficulties stem BARA Green Addendum Top Innov 2014-2.jpg from many reasons, including data gaps in commonly used information systems and lender

  13. CALiPER Application Summary Report 16. LED BR30 and R30 Lamps

    SciTech Connect

    none,

    2012-07-01

    This report analyzes the independently tested performance of 13 LED products labeled as BR30 or R30 lamps. The test results indicate substantial improvement versus earlier CALiPER testing of similar products, and performance comparable to recent data from LED Lighting Facts and ENERGY STAR.

  14. TOP 10 VULNERABILITIES OF CONTROL SYSTEMS AND THEIR ASSOCIATED...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Top 10 Vulnerabilities of Control Systems and Their Associated Migitations (2006) Introduction SCADA Security for Managers and Operators DOE National SCADA Test Bed Program ...

  15. Building America Top Innovations 2013 Profile - Building America...

    Energy Saver

    Building America Top Innovations 2013 Profile - Building America Solution Center PNNL set up the framework for the Building America Solution Center, a web tool connecting users to ...

  16. EM's Top Official Celebrates 'Cocooning' of Reactor Dedicated...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Celebrates 'Cocooning' of Reactor Dedicated by President Kennedy Decades Ago EM's Top Official Celebrates 'Cocooning' of Reactor Dedicated by President Kennedy Decades Ago June 1, ...

  17. Next Generation Advanced Framing - Building America Top Innovation...

    Energy Saver

    Innovation DOE Zero Energy Ready Home Case Study: Charles Thomas Homes, Anna Model, Omaha, NE Top Innovation Categories Advanced Technologies House as a System Business Case ...

  18. NSTec tops more than $2 million in contributions to education...

    National Nuclear Security Administration (NNSA)

    tops more than 2 million in contributions to education outreach | National Nuclear Security Administration Facebook Twitter Youtube Flickr RSS People Mission Managing the...

  19. NREL's Bobi Garrett Named Top Industry Executive | Awards and...

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    and partnerships at the Energy Department's National Renewable Energy Laboratory (NREL), was recognized by the Denver Business Journal as one of the region's top female...

  20. Sequoia supercomputer tops Graph 500 | National Nuclear Security...

    National Nuclear Security Administration (NNSA)

    Lawrence Livermore National Laboratory scientists' search for new ways to solve large complex national security problems led to the top ranking on Graph 500 and new techniques for ...

  1. Path to Deterministic Single Donor Devices using Focused Top...

    Office of Scientific and Technical Information (OSTI)

    Path to Deterministic Single Donor Devices using Focused Top-Down Ion Implantation. Citation Details In-Document Search Title: Path to Deterministic Single Donor Devices using ...

  2. Advanced Nanofabrication of Single Donor Devices using Top-Down...

    Office of Scientific and Technical Information (OSTI)

    Advanced Nanofabrication of Single Donor Devices using Top-Down Implantation. Citation Details In-Document Search Title: Advanced Nanofabrication of Single Donor Devices using ...

  3. America's Next Top Energy Innovator Challenge | Department of...

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Learn More Woodmont Enterprises LLC Oak Ridge National Laboratory 703 likes Woodmont Enterprises, based in Nashville, Tennessee, is creating a top-coat solution moisture barrier ...

  4. Sequoia ranked third in TOP500 list | National Nuclear Security...

    National Nuclear Security Administration (NNSA)

    according to the industry-standard Top500 list. Sequoia, which recently completed its transition to classified computing in support of NNSA's Stockpile Stewardship Program,...

  5. Recent Results on Top-Quark Physics at D0

    SciTech Connect

    Bloom, Kenneth

    2015-10-23

    We present the most recent measurements on top-quark physics obtained with Tevatron $p\\bar{p}$ collisions recorded by the D0 experiment at $\\sqrt{s}= 1.96$ TeV. The full Run II data set of 9.7 fb$^{-1}$ is analyzed. Both lepton+jets and dilepton channels of top-quark pair production are used to measure the differential and inclusive cross sections, the forward-backward asymmetries, the top-quark mass, the spin correlations, and the top-quark polarization.

  6. TOP AND HIGGS PHYSICS AT THE HADRON COLLIDERS

    SciTech Connect

    Jabeen, Shabnam

    2013-10-20

    This review summarizes the recent results for top quark and Higgs boson measurements from experiments at Tevatron, a proton–antiproton collider at a center-of-mass energy of √ s =1 . 96 TeV, and the Large Hadron Collider, a proton–proton collider at a center- of-mass energy of √ s = 7 TeV. These results include the discovery of a Higgs-like boson and measurement of its various properties, and measurements in the top quark sector, e.g. top quark mass, spin, charge asymmetry and production of single top quark.

  7. NNSA Production Office tops Feds Feed Families campaign goal...

    National Nuclear Security Administration (NNSA)

    tops Feds Feed Families campaign goal | National Nuclear Security Administration Facebook Twitter Youtube Flickr RSS People Mission Managing the Stockpile Preventing Proliferation...

  8. Effective Guidance and Tools - Building America Top Innovations...

    Office of Environmental Management (EM)

    High-Performance Home Metrics These Top Innovations provide key technical tools and databases for analyzing energy efficiency measures and achieving optimal savings. 1995-2012...

  9. Large Higgs energy region in Higgs associated top pair production...

    Office of Scientific and Technical Information (OSTI)

    Large Higgs energy region in Higgs associated top pair production at the Linear Collider Citation Details In-Document Search Title: Large Higgs energy region in Higgs associated ...

  10. Groundwater, Legacy Soil Cleanup and Flood Recovery Top Lab's...

    Energy.gov [DOE] (indexed site)

    a legacy contaminant soil cleanup project, and rapid ... Waste and Water Top 2013 Accomplishments for Los Alamos EM ... subcontractor TerranearPMC crews to take hand-augured ...

  11. Single top production as a probe of heavy resonances | OSTI,...

    Office of Scientific and Technical Information (OSTI)

    Single top production as a probe of heavy resonances Not Available Temp HTML Storage 2: Drueke, Elizabeth; Nutter, Joseph; Schwienhorst, Reinhard; Vignaroli, Natascia; Walker, ...

  12. Valuing Green in the Appraisal Process - Building America Top...

    Energy Saver

    Valuing Green in the Appraisal Process - Building America Top Innovation Real estate appraisers have historically faced challenges with green and energy efficient homes, both in ...

  13. Vision Machine & Fabrication Corp. Named Top Small Business Subcontrac...

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Vision Machine & Fabrication Corp. Named Top Small Business Subcontractor at Jefferson Lab for FY 2014 NEWPORT NEWS, VA, Sept. 10, 2015 - Jefferson Science Associates, the...

  14. NREL Staff Recognized for Top Innovations as Lab Celebrates Record...

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Staff Recognized for Top Innovations as Lab Celebrates Record Patent Year DOE EERE Assistant Secretary David Danielson highlights "innovation culture" of national labs May 7, 2015 ...

  15. Westinghouse earns top award from quality new mexico

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Earns Top Award From Quality New Mexico CARLSBAD, N.M., January 11, 2000 - The Westinghouse Waste Isolation Division led a group of three Carlsbad organizations recognized by...

  16. Top Low- or No-Cost Improvements | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Top Low- or No-Cost Improvements Top Low- or No-Cost Improvements This presentation describes the top low- or no-cost projects to improve energy efficiency as identified in energy assessments performed by DOE and by the Industrial Assessment Centers. Top Low- or No-Cost Improvements (April 2, 2009) (1.94 MB) More Documents & Publications Energy Assessments FUJIFILM Hunt Chemicals U.S.A. Achieves Compressed Air System Energy-Reduction Goals with a Three-Phased Strategy Save Energy Now in Your

  17. ESnet Named One of Top Government IT Innovators -- Again

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    ESnet Named One of Top Government IT Innovators - Again News & Publications ESnet News Media & Press Publications and Presentations Galleries ESnet Awards and Honors Contact Us...

  18. The Business Case for Fuel Cells 2011: Energizing America's Top...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    The Business Case for Fuel Cells 2011: Energizing America's Top Companies November 2011 i ... Jennifer Gangi, and Sandra Curtin of Fuel Cells 2000, an activity of Breakthrough ...

  19. Secretary Chu Recognizes America's Next Top Energy Innovators...

    Office of Environmental Management (EM)

    ... View a video on the startup's technology here. Addthis Related Articles The America's Next Top Energy Innovator Challenge makes inventions and technologies developed at the U.S. ...

  20. Help Choose America's Next Top Energy Innovator | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Choose America's Next Top Energy Innovator Help Choose America's Next Top Energy Innovator January 26, 2012 - 9:00am Addthis The America’s Next Top Energy Innovator Challenge, a part of the Startup America initiative, makes it easier for start-ups to use inventions and technologies developed at the U.S. Department of Energy’s 17 National Laboratories and the Y-12 National Security Complex. | Photo courtesy of National Renewable Energy Laboratory. The America's Next Top Energy Innovator

  1. Northwest public utilities, BPA top five-year energy savings...

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Northwest-public-utilities-BPA-top-five-year-energy-savings-target Sign In About | Careers | Contact | Investors | bpa.gov Search News & Us Expand News & Us Projects &...

  2. Top Solar Technology Co Ltd | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Manufacturer of PV module connector systems and conductive aluminium paste for PV cells. References: Top Solar Technology Co Ltd1 This article is a stub. You can help...

  3. Building America Solution Center - Building America Top Innovation...

    Energy Saver

    Building America Solution Center - Building America Top Innovation SCimagemale.jpg The Building America Solution Center is a Web-based tool connecting users to fast, free, and ...

  4. Deep forest rebounds from H...

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    SUBSCRIBE: Print Electronic (PDF) Manage | NEWSLETTERS | SPECIAL OFFERS | RSS | MOBILE | PLACE ADS | N.I.E. | CONTACT US thestate.com archives Web Search powered by YAHOO! SEARCH The news you want delivered to your e-mail! Get the SC Business Report Afternoon Newsletter. Quick Job Search Enter Keyword(s): Enter a City: Columbia Select a State: South Carolina Select a Category: All Job Categories Advanced Job Search | Search by Category The State Top Jobs » Sales and Customer Service

  5. Deep Borehole Disposal Research: Demonstration Site Selection...

    Office of Environmental Management (EM)

    The deep borehole disposal concept consists of drilling a borehole on the order of 5,000 m deep, emplacing waste canisters in the lower part of the borehole, and sealing the upper ...

  6. Deep Learning and General Machine Learning

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Learning Deep Learning and General Machine Learning NERSC supports several software frameworks for machine learning and deep learning (and it is growing!). The list includes: Deep Learning Python-Based Frameworks Theano Lasagne Keras TensorFlow (not available on Edison, except through a shifter image) To use the python based deep learning frameworks on Cori or Edison enter the following command in the shell: module load deeplearning Then you can proceed to write python scripts that use any of

  7. Deep patch technique for landslide repair. Final report

    SciTech Connect

    Helwany, B.M.

    1994-10-01

    The report describes the laboratory testing of the `USFS deep patch` technique and a CTI modification of this technique for repairing landslides with geosynthetic reinforcement. The technique involves replacing sections of roadway lost due to landslides on top of a geosynthetically-reinforced embankment. The CTI modification involves replacing the reinforced slope with a geosynthetically-reinforced retaining wall with a truncated base. Both techniques rely on the cantilevering ability of the reinforced mass to limit the load on the foundation with a high slide potential. The tests with road base showed that (1) both the USFS and CTI repair reduced effectively the adverse effects of local landsliding on the highway pavement by preventing crack propagation; (2) the USFS repair increased the stability of the repaired slope, which was in progressive failure, by reducing the stresses exerted on it; and (3) the CTI repair produced substantially greater stresses on its foundation due to the truncated base of the reinforced mass.

  8. Generic Deep Geologic Disposal Safety Case

    Energy.gov [DOE]

    The Generic Deep Geologic Disposal Safety Case presents generic information that is of use in understanding potential deep geologic disposal options (e.g., salt, shale, granite, deep borehole) in the U.S. for used nuclear fuel (UNF) from reactors and high-level radioactive waste (HLW).

  9. Building America Top Innovations 2012: Advanced Framing Systems and Packages

    SciTech Connect

    none,

    2013-01-01

    This Building America Top Innovations profile describes Building America research showing advanced 2x6, 24-inch on-center framing, single top plates, open headers, and 2-stud corners reduced board feet of lumber by more than 1,000 feet, cut energy use by 13%, and cut material and labor costs by more than $1,000 on a typical home.

  10. Search for the Neutral Current Top Quark Decay t-->Zc Using Ratio of Z-Boson + 4 Jets to W-Boson + 4 Jets Production

    SciTech Connect

    Aaltonen, T.; Adelman, Jahred A.; Akimoto, T.; Alvarez Gonzalez, B.; Amerio, S.; Amidei, Dante E.; Anastassov, A.; Annovi, Alberto; Antos, Jaroslav; Apollinari, G.; Apresyan, A.; /Purdue U. /Waseda U.

    2009-05-01

    We have used the Collider Detector at Fermilab (CDF II) to search for the flavor-changing neutral-current (FCNC) top quark decay t {yields} Zc using a technique employing ratios of W and Z production, measured in p{bar p} data corresponding to an integrated luminosity of 1.52 fb{sup -1}. The analysis uses a comparison of two decay chains, p{bar p} {yields} t{bar t} {yields} WbWb {yields} {ell}{nu}bjjb and p{bar p} {yields} t{bar t} {yields} ZcWb {yields} {ell}{ell}cjjb, to cancel systematic uncertainties in acceptance, efficiency, and luminosity. We validate the modeling of acceptance and efficiency for lepton identification over the multi-year dataset using another ratio of W and Z production, in this case the observed ratio of inclusive production of W to Z bosons. To improve the discrimination against standard model backgrounds to top quark decays, we calculate the top quark mass for each event with two leptons and four jets assuming it is a t{bar t} event with one of the top quarks decaying to Zc. For additional background discrimination we require at least one jet to be identified as originating from a b-quark. No significant signal is found and we set an upper limit on the FCNC branching ratio Br(t {yields} Zc) using a likelihood constructed from the {ell}{ell}cjjb top quark mass distribution and the number of {ell}{nu}bjjb events. Limits are set as a function of the helicity of the Z boson produced in the FCNC decay. For 100% longitudinally polarized Z bosons we find limits of 8.3% and 9.3% (95% C.L.) depending on the assumptions regarding the theoretical top quark pair production cross-section.

  11. HYDRODYNAMIC SIMULATIONS OF H ENTRAINMENT AT THE TOP OF He-SHELL FLASH CONVECTION

    SciTech Connect

    Woodward, Paul R.; Lin, Pei-Hung; Herwig, Falk E-mail: fherwig@uvic.ca

    2015-01-01

    We present the first three-dimensional, fully compressible gas-dynamics simulations in 4? geometry of He-shell flash convection with proton-rich fuel entrainment at the upper boundary. This work is motivated by the insufficiently understood observed consequences of the H-ingestion flash in post-asymptotic giant branch (post-AGB) stars (Sakurai's object) and metal-poor AGB stars. Our investigation is focused on the entrainment process at the top convection boundary and on the subsequent advection of H-rich material into deeper layers, and we therefore ignore the burning of the proton-rich fuel in this study. We find that for our deep convection zone, coherent convective motions of near global scale appear to dominate the flow. At the top boundary convective shear flows are stable against Kelvin-Helmholtz instabilities. However, such shear instabilities are induced by the boundary-layer separation in large-scale, opposing flows. This links the global nature of thick shell convection with the entrainment process. We establish the quantitative dependence of the entrainment rate on grid resolution. With our numerical technique, simulations with 1024{sup 3} cells or more are required to reach a numerical fidelity appropriate for this problem. However, only the result from the 1536{sup 3} simulation provides a clear indication that we approach convergence with regard to the entrainment rate. Our results demonstrate that our method, which is described in detail, can provide quantitative results related to entrainment and convective boundary mixing in deep stellar interior environments with very stiff convective boundaries. For the representative case we study in detail, we find an entrainment rate of 4.38 1.48 10{sup 13} M {sub ?} s{sup 1}.

  12. Measurements of the Top Quark at the Tevatron Collider

    SciTech Connect

    Cerrito, Lucio

    2007-01-01

    The authors present recent preliminary measurements of the top-antitop pair production cross section and determinations of the top quark pole mass, performed using the data collected by the CDF and D0 Collaborations at the Tevatron Collider. In the lepton plus jets final state, with semileptonic B decay, the pair production cross section has now been measured at CDF using {approx} 760 pb{sup -1} of proton-antiproton collisions at a center-of-mass energy of {radical}s = 1.96 TeV. A measurement of the production cross section has also been made with {approx} 1 fb{sup -1} of data in the all-jets final state by the CDF Collaboration. The mass of the top quark has now been measured using {approx} 1 fb{sup -1} of collision data using all decay channels of the top quark pair, yielding the most precise measurements of the top mass to date.

  13. USDOE Top-of-Rail Lubricant Project

    SciTech Connect

    Mohumad F. Alzoubi; George R. Fenske; Robert A. Erck; Amrit S. Boparai

    2002-02-01

    Lubrication of wheel/rail systems has been recognized for the last two decades as a very important issue for railroads. Energy savings and less friction and wear can be realized if a lubricant can be used at the wheel/rail interface. On the other hand, adverse influences are seen in operating and wear conditions if improper or excessive lubrication is used. Also, inefficiencies in lubrication need to be avoided for economic and environmental reasons. The top-of-rail (TOR) lubricant concept was developed by Texaco Corporation to lubricate wheels and rails effectively and efficiently. Tranergy Corporation has been developing its SENTRAEN 2000{trademark} lubrication system for the last ten years, and this revolutionary new high-tech on-board rail lubrication system promises to dramatically improve the energy efficiency, performance, safety, and track environment of railroads. The system is fully computer-controlled and ensures that all of the lubricant is consumed as the end of the train passes. Lubricant quantity dispensed is a function of grade, speed, curve, and axle load. Tranergy also has its LA4000{trademark} wheel and rail simulator, a lubrication and traction testing apparatus. The primary task of this project was collecting and analyzing the volatile and semivolatile compounds produced as the lubricant was used. The volatile organic compounds were collected by Carbotrap cartridges and analyzed by adsorption and gas chromatography/mass spectrometry (GC/MS). The semivolatile fraction was obtained by collecting liquid that dripped from the test wheel. The collected material was also analyzed by GC/MS. Both of these analyses were qualitative. The results indicated that in the volatile fraction, the only compounds on the Environmental Protection Agency's (EPA) Superfund List of Analytes detected were contaminants either in the room air or from other potential contamination sources in the laboratory. Similarly, in the semivolatile fraction none of the detected

  14. Geothermal br Resource br Area Geothermal br Resource br Area...

    OpenEI (Open Energy Information) [EERE & EIA]

    Aluto Langano Geothermal Area Aluto Langano Geothermal Area East African Rift System Ethiopian Rift Valley Major Normal Fault Basalt MW K Amatitlan Geothermal Area Amatitlan...

  15. AmeriFlux BR-Sa1 Santarem-Km67-Primary Forest

    SciTech Connect

    Saleska, Scott

    2016-01-01

    This is the AmeriFlux version of the carbon flux data for the site BR-Sa1 Santarem-Km67-Primary Forest. Site Description - The LBA Tapajos KM67 Mature Forest site is located in the Tapajos National Forest, a 450,000 ha closed-canopy upland forest in Amazonian Brazil. Bounded by the Tapajos River in the west and highway BR-163 to the east, the tower is located on a flat plateau (or planalto) that extends up to 150 km to the north, south, and east. Within the confines of the National Forest, anthropogenic disturbances are limited to a few small hunting trails. The surrounding stand is classified as primary or "old-growth"" predominantly by its uneven age distribution, emergent trees, numerous epiphytes and abundant large logs. In 2007 falling trees hit the tower guy wires rendering all instrumentation in-operational. After a complete restoration tower measurements resumed in August of 2008.

  16. The Mechanism of First Raindrops Formation in Deep Convective Clouds

    SciTech Connect

    Khain, Alexander; Prabha, Thara; Benmoshe, Nir; Pandithurai, G.; Ovchinnikov, Mikhail

    2013-08-22

    The formation of first raindrops in deep convective clouds is investigated. A combination of observational data analysis and 2-D and 3-D numerical bin microphysical simulations of deep convective clouds suggests that the first raindrops form at the top of undiluted or slightly diluted cores. It is shown that droplet size distributions in these regions are wider and contain more large droplets than in diluted volumes. The results of the study indicate that the initial raindrop formation is determined by the basic microphysical processes within ascending adiabatic volumes. It allows one to predict the height of the formation of first raindrops considering the processes of nucleation, diffusion growth and collisions. The results obtained in the study explain observational results reported by Freud and Rosenfeld (2012) according to which the height of first raindrop formation depends linearly on the droplet number concentration at cloud base. The results also explain why a simple adiabatic parcel model can reproduce this dependence. The present study provides a physical basis for retrieval algorithms of cloud microphysical properties and aerosol properties using satellites proposed by Rosenfeld et al. ( 2012). The study indicates that the role of mixing and entrainment in the formation of the first raindrops is not of crucial importance. It is also shown that low variability of effective and mean volume radii along horizontal traverses, as regularly observed by in situ measurements, can be simulated by high-resolution cloud models, in which mixing is parameterized by a traditional 1.5 order turbulence closure scheme.

  17. Spectroscopic Evidence for a High-Spin Br-Fe(IV)-Oxo Intermediate in the

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    alpha-Ketoglutarate-Dependent Halogenase CytC3 from Streptomyces Working title - Spectroscopic Evidence for a High-Spin Br-Fe(IV)-Oxo Intermediate in the alpha-Ketoglutarate-Dependent Halogenase CytC3 from Streptomyces There are over 4,500 known halogenated natural products. The presence of a halogen in the molecular framework tunes a compound's chemical reactivity or biological activity in these natural fungicides and antibiotics. Four classes of enzymes are now known to catalyze

  18. Investigation into Nanostructured Lanthanum Halides and CeBr{sub 3} for Nuclear Radiation Detection

    SciTech Connect

    Guss, P., Guise, R., Mukhopadhyay, S., Yuan, D.

    2011-06-22

    This slide-show presents work on radiation detection with nanostructured lanthanum halides and CeBr{sub 3}. The goal is to extend the gamma energy response on both low and high-energy regimes by demonstrating the ability to detect low-energy x-rays and relatively high-energy activation prompt gamma rays simultaneously using the nano-structured lanthanum bromide, lanthanum fluoride, cerium bromide, or other nanocrystal material. Homogeneous and nano structure cases are compared.

  19. Laser cooling of MgCl and MgBr in theoretical approach

    SciTech Connect

    Wan, Mingjie; Shao, Juxiang; Huang, Duohui; Yang, Junsheng; Cao, Qilong; Jin, Chengguo; Wang, Fanhou; Gao, Yufeng

    2015-07-14

    Ab initio calculations for three low-lying electronic states (X{sup 2}Σ{sup +}, A{sup 2}Π, and 2{sup 2}Π) of MgCl and MgBr molecules, including spin-orbit coupling, are performed using multi-reference configuration interaction plus Davidson correction method. The calculations involve all-electronic basis sets and Douglas–Kroll scalar relativistic correction. Spectroscopic parameters well agree with available theoretical and experimental data. Highly diagonally distributed Franck-Condon factors f{sub 00} for A{sup 2}Π{sub 3/2,1/2} (υ′ = 0) → X{sup 2}Σ{sup +}{sub 1/2} (υ″ = 0) are determined for both MgCl and MgBr molecules. Suitable radiative lifetimes τ of A{sup 2}Π{sub 3/2,1/2} (υ′ = 0) states for rapid laser cooling are also obtained. The proposed laser drives A{sup 2}Π{sub 3/2} (υ′ = 0) → X{sup 2}Σ{sup +}{sub 1/2} (υ″ = 0) transition by using three wavelengths (main pump laser λ{sub 00}; two repumping lasers λ{sub 10} and λ{sub 21}). These results indicate the probability of laser cooling MgCl and MgBr molecules.

  20. Closed-cage (fullerene-like) structures of NiBr{sub 2}

    SciTech Connect

    Bar-Sadan, M.; Popovitz-Biro, R.; Prior, Yehiam; Tenne, R. . E-mail: reshef.tenne@weizmann.ac.il

    2006-11-09

    It is well accepted by now that nanoparticles of inorganic layered compounds form closed-cage structures (IF). In particular closed-cage nanoparticles of metal dihalides, like NiCl{sub 2}, CdCl{sub 2} and CdI{sub 2} were shown to produce such structures in the past. In the present report IF-NiBr{sub 2} polyhedra and quasi-spherical structures were obtained by the evaporation/recrystallization technique as well as by laser ablation. When the nanoclusters were formed in humid atmosphere, nickel perbromate hydrate [Ni(BrO{sub 4}){sub 2}(H{sub 2}O){sub 6}] polyhedra and short tubules were produced, as a result of a reaction with water. Nanooctahedra of NiBr{sub 2} were found occasionally in the irradiated soot. The reoccurrence of this structure in the IF family suggests that it is a generic one. Consistent with previous observations, this study showed that formation of the IF materials stabilized the material under the electron-beam irradiation. The growth mechanism of these nanostructures is briefly discussed.

  1. A modified Stillinger-Weber potential for TlBr and its polymorphic extension

    SciTech Connect

    Zhou, Xiaowang; Foster, Michael E.; Jones, Reese E.; Doty, F. Patrick; Yang, Pin; Fan, Hongyou

    2015-04-30

    TlBr is promising for g- and x- radiation detection, but suffers from rapid performance degradation under the operating external electric fields. To enable molecular dynamics (MD) studies of this degradation, we have developed a Stillinger-Weber type of TlBr interatomic potential. During this process, we have also addressed two problems of wider interests. First, the conventional Stillinger-Weber potential format is only applicable for tetrahedral structures (e.g., diamond-cubic, zinc-blende, or wurtzite). Here we have modified the analytical functions of the Stillinger-Weber potential so that it can now be used for other crystal structures. Second, past modifications of interatomic potentials cannot always be applied by a broad community because any new analytical functions of the potential would require corresponding changes in the molecular dynamics codes. Here we have developed a polymorphic potential model that simultaneously incorporates Stillinger-Weber, Tersoff, embedded-atom method, and any variations (i.e., modified functions) of these potentials. As a result, we have implemented this polymorphic model in MD code LAMMPS, and demonstrated that our TlBr potential enables stable MD simulations under external electric fields.

  2. Optimization of electrode characteristics for the Br-2/H-2 redox flow cell

    SciTech Connect

    Tucker, MC; Cho, KT; Weber, AZ; Lin, GY; Nguyen, TV

    2014-10-17

    The Br-2/H-2 redox flow cell shows promise as a high-power, low-cost energy storage device. The effect of various aspects of material selection, processing, and assembly of electrodes on the operation, performance, and efficiency of the system is determined. In particular, (+) electrode thickness, cell compression, hydrogen pressure, and (-) electrode architecture are investigated. Increasing hydrogen pressure and depositing the (-) catalyst layer on the membrane instead of on the carbon paper backing layers have a large positive impact on performance, enabling a limiting current density above 2 A cm(-2) and a peak power density of 1.4 W cm(-2). Maximum energy efficiency of 79 % is achieved. In addition, the root cause of limiting-current behavior in this system is elucidated, where it is found that Br- reversibly adsorbs at the Pt (-) electrode for potentials exceeding a critical value, and the extent of Br- coverage is potential-dependent. This phenomenon limits maximum cell current density and must be addressed in system modeling and design. These findings are expected to lower system cost and enable higher efficiency.

  3. A modified Stillinger-Weber potential for TlBr and its polymorphic extension

    DOE PAGES [OSTI]

    Zhou, Xiaowang; Foster, Michael E.; Jones, Reese E.; Doty, F. Patrick; Yang, Pin; Fan, Hongyou

    2015-04-30

    TlBr is promising for g- and x- radiation detection, but suffers from rapid performance degradation under the operating external electric fields. To enable molecular dynamics (MD) studies of this degradation, we have developed a Stillinger-Weber type of TlBr interatomic potential. During this process, we have also addressed two problems of wider interests. First, the conventional Stillinger-Weber potential format is only applicable for tetrahedral structures (e.g., diamond-cubic, zinc-blende, or wurtzite). Here we have modified the analytical functions of the Stillinger-Weber potential so that it can now be used for other crystal structures. Second, past modifications of interatomic potentials cannot always bemore » applied by a broad community because any new analytical functions of the potential would require corresponding changes in the molecular dynamics codes. Here we have developed a polymorphic potential model that simultaneously incorporates Stillinger-Weber, Tersoff, embedded-atom method, and any variations (i.e., modified functions) of these potentials. As a result, we have implemented this polymorphic model in MD code LAMMPS, and demonstrated that our TlBr potential enables stable MD simulations under external electric fields.« less

  4. Optimization of electrode characteristics for the Br?/H? redox flow cell

    SciTech Connect

    Tucker, Michael C.; Cho, Kyu Taek; Weber, Adam Z.; Lin, Guangyu; Van Nguyen, Trung

    2015-01-01

    The Br?/H? redox flow cell shows promise as a high-power, low-cost energy storage device. The effect of various aspects of material selection, processing, and assembly of electrodes on the operation, performance, and efficiency of the system is determined. In particular, (+) electrode thickness, cell compression, hydrogen pressure, and () electrode architecture are investigated. Increasing hydrogen pressure and depositing the () catalyst layer on the membrane instead of on the carbon-paper backing layers have a large positive impact on performance, enabling a limiting current density above 2 A cm-2 and a peak power density of 1.4 W cm-2. Maximum energy efficiency of 79% is achieved. In addition, the root cause of limiting-current behavior in this system is elucidated, where it is found that Br- reversibly adsorbs at the Pt () electrode for potentials exceeding a critical value, and the extent of Br- coverage is potential-dependent. This phenomenon limits maximum cell current density and must be addressed in system modeling and design. These findings are expected to lower system cost and enable higher efficiency.

  5. Re-evaluation of the eutectic region of the LiBr-KBr-LiF system

    SciTech Connect

    Redey, L.; Guidotti, R.A.

    1996-05-01

    The separator pellet in a thermal battery consists of electrolyte immobilized by a binder (typically, MgO powder). The melting point of the electrolyte determines the effective operating window for its use in a thermal battery. The development of a two-hour thermal battery required the use of a molten salt that had a lower melting point and larger liquidus range than the LiCl-KCl eutectic which melts at 352 C. Several candidate eutectic electrolyte systems were evaluated for their suitability for this application. One was the LiCl-LiBr-KBr eutectic used at Argonne National Laboratories for high-temperature rechargeable batteries for electric-vehicle applications. Using a custom-designed high-temperature conductivity cell, the authors were able to readily determine the liquidus region for the various compositions studied around the original eutectic for the LiBr-KBr-LiF system. The actual eutectic composition was found to be 60.0 m/o LiBr-37.5 m/o KBr-2.5 m/o LiF with a melting point of 324 {+-} 0.5 C.

  6. Response of LaBr{sub 3}(Ce) scintillators to 2.5 MeV fusion neutrons

    SciTech Connect

    Cazzaniga, C.; Nocente, M.; Gorini, G.; Istituto di Fisica del Plasma, Associazione EURATOM-ENEA-CNR, Via Roberto Cozzi 53, Milano 20125 ; Tardocchi, M.; Croci, G.; Giacomelli, L.; Angelone, M.; Pillon, M.; Villari, S.; Weller, A.; Petrizzi, L.; Collaboration: ASDEX Upgrade Team; JET-EFDA Contributors

    2013-12-15

    Measurements of the response of LaBr{sub 3}(Ce) to 2.5 MeV neutrons have been carried out at the Frascati Neutron Generator and at tokamak facilities with deuterium plasmas. The observed spectrum has been interpreted by means of a Monte Carlo model. It is found that the main contributor to the measured response is neutron inelastic scattering on {sup 79}Br, {sup 81}Br, and {sup 139}La. An extrapolation of the count rate response to 14 MeV neutrons from deuterium-tritium plasmas is also presented. The results are of relevance for the design of ?-ray diagnostics of fusion burning plasmas.

  7. Characterization of low-melting electrolytes for potential geothermal borehole power supplies: The LiBr-KBr-LiF eutectic

    SciTech Connect

    Guidotti, R.A.; Reinhardt, F.W.

    1998-05-01

    The suitability of modified thermal-battery technology for use as a potential power source for geothermal borehole applications is under investigation. As a first step, the discharge processes that take place in LiSi/LiBr-KBr-LiF/FeS{sub 2} thermal cells were studied at temperatures of 350 C and 400 C using pelletized cells with immobilized electrolyte. Incorporation of a reference electrode allowed the relative contribution of each electrode to the overall cell polarization to be determined. The results of single-cell tests are presented, along with preliminary data for cells based on a lower-melting CsBr-LiBr-KBr eutectic salt.

  8. Jefferson Lab's Newest Cluster Makes Top500 List of Fastest

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Supercomputers | Jefferson Lab Newest Cluster Makes Top500 List of Fastest Supercomputers Jefferson Lab's Newest Cluster Makes Top500 List of Fastest Supercomputers NEWPORT NEWS, VA, November 16, 2016 - For the third time in its history, Thomas Jefferson National Accelerator Facility is home to one of the world's 500 fastest supercomputers. The SciPhi-XVI supercomputer was just listed as a TOP500 Supercomputer Site on November 14, placing 397th on the 48th edition of the list of the world's

  9. Constraints on anomalous top quark couplings at the LHC

    SciTech Connect

    Rizzo, T.G.

    1996-09-01

    Measurements of distributions associated with the pair production of top quarks at the LHC can be used to constrain (or observe) the anomalous chromomagnetic dipole moment(k) of the top. For example, using either the tt(bar) invariant mass or the Pt distribution of top we find that sensitivities to ; k; of order 0.05 are obtainable with 100 /fb of integrated luminosity. This is similar in magnitude to what can be obtained at a 500 GeV NLC with an integrated luminosity of 50 /fb through an examination of the e(+)e(-) right arrow tt(bar)g process.

  10. Observation of $t$-channel electroweak top quark production

    SciTech Connect

    Triplett, Nathan; /Iowa State U.

    2011-04-01

    The top quark is the heaviest known fundamental particle, with a mass of 172.0{sub -1.3}{sup +0.9}GeV. This is nearly twice the mass of the second heaviest known particle, the Z boson, and roughly the mass of a gold atom. Because of its unusually large mass, studying the top quark may provide insight into the Higgs mechanism and other beyond the standard model physics. Only two accelerators in the world are powerful enough to produce top quarks. The Tevatron, which first accelerated protons in 1983, has produced almost 400,000 top quarks, roughly half at each of its two detectors: DO and CDF. The LHC is a much newer accelerator which currently has accumulated about 0.5% as much data as the Tevatron. However, when running at full luminosity, the LHC is capable of producing a top quark about once every second and will quickly surpass the Tevatron as the leading producer of top quarks. This analysis uses data from the D0 detector at the Tevatron, which are described in chapter 3. Top quarks are produced most often in pairs of top and anti-top quarks through an interaction of the strong force. This production mode was first observed in 1995 at the Tevatron. However, top quarks can also be produced though an electroweak interaction, which produces just one top quark. This production mode was first observed at the Tevatron in 2008. Single top quark production can occur in different channels. In this analysis, a measurement of the cross section of the t-channel production mode is performed. This measurement uses 5.4 fb{sup -1} of data and uses the technique of boosted decision trees in order to separate signal from background events. The t-channel cross section is measured to be: {sigma}(p{bar p} {yields} tqb + X) = 3.03{sub -0.66}{sup +0.78}pb (0.0.1). Additional cross section measurements were also performed for the s-channel as well as the s + t-channel. The measurement of each one of these three cross sections was repeated three times using different techniques, and

  11. Top quark production and properties at the Tevatron

    SciTech Connect

    Fiedler, Frank; /Munich U.

    2005-06-01

    The precise measurement of top quark production and properties is one of the primary goals of the Tevatron during Run II. The total t{bar t} production cross-section has been measured in a large variety of decay channels and using different selection criteria. Results from differential cross-section measurements and searches for new physics in t{bar t} production and top quark decays are available. Electroweak production of single top quarks has been searched for. The results from all these analyses, using typically 200 pb{sup -1} of data, are presented.

  12. Measurements of top quark production and properties at the Tevatron

    SciTech Connect

    Bartos, P.

    2014-09-15

    In this letter, we summarize the latest results of the top-quark production and properties at the Tevatron. We do not include results of the top-quark mass and single top-quark production as they were presented in separate talks. The results of the measurements are mostly consistent with the standard-model predictions. However, by looking at the production asymmetry measured by CDF, one can see a discrepancy in both, $t\\bar{t}$ inclusive and lepton-based measurements. D\\O\\ results of production asymmetry are compatible with the standard-model predictions as well as with the CDF results.

  13. Top quark and SUSY (supersymmetric) searches at CDF

    SciTech Connect

    Yeh, G.P.

    1990-05-17

    Searches for the top quark in p{bar p} collisions at {radical}s = 1.8 TeV are described. The analyses are based on data with an integrated luminosity of 4.4 pb{sup {minus}1} recorded with the Collider Detector at Fermilab in the 1988--1989 run. An upper limit on the t{bar t} cross section is obtained. The top quark with mass below 89 GeV/c{sup 2} is excluded at the 95% CL. Prospects for searches for the top quark in the future are presented. We also briefly present results on searches for supersymmetric particles. 14 refs., 10 figs.

  14. Top EM Leadership to Participate in 2016 National Cleanup Workshop |

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Department of Energy Top EM Leadership to Participate in 2016 National Cleanup Workshop Top EM Leadership to Participate in 2016 National Cleanup Workshop March 9, 2016 - 12:00pm Addthis Top EM Leadership to Participate in 2016 National Cleanup Workshop WASHINGTON, D.C. - EM's senior leaders are set to join the 2016 National Cleanup Workshop in mid-September in the Washington, D.C.-area. The nuclear cleanup program's leaders scheduled to take part in the workshop include Assistant Secretary

  15. The heavy Top Quark Partner in Little Higgs Models

    SciTech Connect

    Larios, F.; Perez, M. A.; Penunuri, F.

    2008-07-02

    Little Higgs models provide a natural explanation for the lightness of the Higgs mass. Through the mechanism of collective symmetry breaking, one loop quadratic divergent contributions to the Higgs mass are avoided. In these models a heavy partner of the Top quark appears as required to cancel out the Top's loop contribution. This heavy Top could be produced at the LHC mainly in the single mode. Because of flavor mixing a large FCNC gtT coupling can be generated at one loop that could boost the single T production mode through gg fusion.

  16. Military students access top R&D

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Military students access top R&D Military students access top R&D Cadets and midshipmen spend summer expanding their scientific knowledge at world-class Los Alamos facilities August 27, 2013 Military students access top R&D Micah Dose, a midshipman at the U.S. Naval Academy and a SARA intern in the Laboratory's ARIES program, peers inside the glovebox where plutonium pits are dis-assembled at Los Alamos. ARIES is the only program in the nation that disassembles and destroys surplus

  17. Top-secret super-secure vault declassified

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Top-secret super-secure vault declassified Top-secret super-secure vault declassified Located in Los Alamos canyon at Technical Area 41, the Tunnel Vault was built between 1948 and 1949. July 23, 2013 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 Alamos National Laboratory sits

  18. Top Better Buildings Beat Articles for February | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Top Better Buildings Beat Articles for February Top Better Buildings Beat Articles for February March 4, 2016 - 9:54am Addthis Top Better Buildings Beat Articles for February By Monica Kanojia You want a rundown of the Better Buildings Beat blog's commercial sector-relevant, and we've got them. Check out February's list of Beat articles to get caught up on the progress being made by Better Buildings Partners in the market toward breaking various barriers to energy efficiency. Florida Better

  19. WIPP Receives Top Safety Award | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Top Safety Award WIPP Receives Top Safety Award November 9, 2011 - 12:00pm Addthis Media Contact Deb Gill www.wipp.energy.gov 575-234-7270 CARLSBAD, N.M. - The U.S. Department of Energy's (DOE) Waste Isolation Pilot Plant (WIPP) received top accolades from New Mexico's leading mining organizations. The New Mexico Bureau of Mine Safety (BMS) recently recognized URS Washington TRU Solutions (WTS), LLC, the WIPP management and operating contractor, for receiving the New Mexico Mining Association

  20. A measurement of the top pair production cross-section in the dilepton channel using lepton plus track selection

    SciTech Connect

    Mills, Corrinne Elaine; /UC, Santa Barbara

    2007-06-01

    Using 1.1 fb{sup -1} of data collected by the Collider Detector at Fermilab (CDF) from Run II of the Fermilab Tevatron, they measure the t{bar t} production cross section in events with two leptons, significant missing transverse energy, and {ge} 2 jets. As the Run II dataset grows, more stringent tests of Standard Model predictions for the top quark sector are becoming possible. The dilepton channel, where both top quarks decay t {yields} Wb {yields} {ell}{nu}b, is of particular interest due to its high purity even in the absence of a b jet 'tagging' requirement. Use of an isolated track as the second lepton significant increases the dilepton acceptance, at the price of some increase in background, particular from W + jets events where one of the jets is identified as a lepton. With the amount of data available, it has been possible to improve the estimate of the contribution from that background, reflected in a reduced systematic uncertainty. Assuming a branching ratio of BR(W {yields} {ell}{nu}) = 10.8% and a top mass of m{sub t} = 175 GeV/c{sup 2}, the measured cross-section is {sigma}(p{bar p} {yields} t{bar t}) = 8.3 {+-} 1.3(stat.) {+-} 0.7(syst.) {+-} 0.5(lumi.) pb. The result is consistent with the Standard Model prediction of 6.7{sub -0.9}{sup +0.7} pb and represents a significant improvement in precision over previous results using this selection.

  1. Measurement of ratio R = (BR(D{sup 0}{yields}K{pi}{pi}{pi})/BR(D{sup 0}{yields}K{pi})) in {pi}{sup -}-Nucleus interactions at 500 GeV/c

    SciTech Connect

    Solano Salinas, C. J.; Paucarchuco, C.; Fernandez, A.; Sheaff, M.

    2007-10-26

    We report a very preliminary result on the measurement of the ratio of branching ratios, for two decays D{sup 0} meson, R = (BR(D{sup 0}{yields}K{pi}{pi}{pi})/BR(D{sup 0}{yields}K{pi})), using data from the E791 experiment. We find R = 1.96{+-}0.0286 (stat){+-}0.06 (sys). This is in agreement with and of similar precision to the current PDG average value 1.97{+-}0.09.

  2. America's Next Top Energy Innovator Challenge | Department of...

    Energy.gov [DOE] (indexed site)

    The America's Next Top Energy Innovator Challenge, a part of the Startup America initiative, made it easier for start-ups to use inventions and technology developed at the U.S....

  3. Building America Top Innovations 2013 Profile Building America Solution Center

    SciTech Connect

    none,

    2013-09-01

    This Top Innovation profile provides information about the Building America Solution Center created by Pacific Northwest National Laboratory, a web tool connecting users to thousands of pieces of building science information developed by DOEs Building America research partners.

  4. PPPL earns top EPA award | Princeton Plasma Physics Lab

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    PPPL earns top EPA award By Jeanne Jackson DeVoe March 14, 2013 Tweet Widget Google Plus ... The recycling of the metal was a big factor in PPPL winning the 2012 EPA WasteWise ...

  5. Top quark properties from the Tevatron (Conference) | SciTech...

    Office of Scientific and Technical Information (OSTI)

    about 172 GeVcsup 2, the top quark provides a unique environment for tests of the Standard Model and is believed to yield sensitivity to new physics beyond the Standard Model. ...

  6. Los Alamos National Laboratory again top contributor to United...

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    County's giving campaign. July 1, 2010 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...

  7. Building America Top Innovations 2012: Unvented, Conditioned Crawlspaces

    SciTech Connect

    none,

    2013-01-01

    This Building America Top Innovations profile describes Building America research which influenced code requirements by demonstrating that unvented, conditioned crawlspaces use 15% to 18% less energy for heating and cooling while reducing humidity over 20% in humid climates.

  8. Top Quark Anomalous Couplings at the International Linear Collider...

    Office of Scientific and Technical Information (OSTI)

    This process probes the elementary couplings of the top quark to the photon, the Z and the W bosons at a level of precision that is difficult to achieve at hadron colliders. ...

  9. Building America Top Innovations 2012: High-R Walls

    SciTech Connect

    none,

    2013-01-01

    This Building America Top Innovations profile describes Building America research on high-R-value walls showing the difference between rated and whole wall R values and the need for vented cladding to reduce condensation potential with some insulation types.

  10. The top quark, 20 years after its discovery

    SciTech Connect

    Denisov, Dmitri; Vellidis, Costas

    2015-04-15

    The heaviest of nature’s elementary particles plays an outsized role in many fundamental processes. But because the top quark is so massive, it eluded experimental detection for nearly two decades.

  11. Building America Top Innovations 2012: EEBA Water Management Guide

    SciTech Connect

    none,

    2013-01-01

    This Building America Top Innovations profile describes the DOE-sponsored Water Management Guide, which identifies durability issues and solutions for high-performance homes. The Water Management Guide has sold 15,000 copies since its first printing.

  12. Report of the 2005 Snowmass Top/QCD Working Group

    SciTech Connect

    Juste, A.; Kiyo, Y.; Petriello, F.; Teubner, T.; Agashe, K.; Batra, P.; Baur, U.; Berger, C.F.; Cembranos, J.A.R.; Gehrmann-De Ridder, A.; Gehrmann, T.; Glover, E.W.N.; Godfrey, S.; Hoang, A.; Perelstein, M.; Sullivan, Z.; Tait, T.; Zhu, S.; /Johns Hopkins U. /Princeton, Inst. Advanced Study /Syracuse U. /Argonne /SUNY, Buffalo /SLAC /UC, Irvine /Zurich, ETH /Zurich U. /Durham U., IPPP /Ottawa Carleton Inst. Phys. /Munich, Max Planck Inst. /Cornell U., CIHEP /Peking U.

    2006-01-17

    This report discusses several topics in both top quark physics and QCD at an International Linear Collider (ILC). Issues such as measurements at the t tbar threshold, including both theoretical and machine requirements, and the determination of electroweak top quark couplings are reviewed. New results concerning the potential of a 500 GeV e+e collider for measuring Wtb couplings and the top quark Yukawa coupling are presented. The status of higher order QCD corrections to jet production cross sections, heavy quark form factors, and longitudinal gauge boson scattering, needed for percent-level studies at the ILC, are reviewed. A new study of the measurement of the hadronic structure of the photon at a gamma gamma collider is presented. The effects on top quark properties from several models of new physics, including composite models, Little Higgs theories, and CPT violation, are studied.

  13. Building America Top Innovations 2012: Basement Insulation Systems

    SciTech Connect

    none,

    2013-01-01

    This Building America Top Innovations profile describes research on basement insulation, which identifies the wall installation methods and materials that perform best in terms of insulation and water resistance.

  14. Building America Top Innovations 2012: Tankless Gas Water Heater Performance

    SciTech Connect

    none,

    2013-01-01

    This Building America Top Innovations profile describes Building America field testing that shed light on how real-world water usage affects energy saving estimates of high-efficiency water heating systems.

  15. Building America Top Innovations 2012: Ducts in Conditioned Space

    SciTech Connect

    none,

    2013-01-01

    This Building America Top Innovations profile describes Building America field testing that found moving ductwork into the home’s conditioned space can save 8%-15% on energy costs, improve comfort, reduce moisture problems, and even reduce installation costs.

  16. Evidence for electroweak top quark production in proton-antiproton...

    Office of Scientific and Technical Information (OSTI)

    acceptance, background, and observed data we measure the single top quark cross section: sigma(pbar p yields tb + tqb + X) 4.6sub -1.5sup +1.8 pb. The probability for...

  17. NREL Bioenergy Staff Honored for Top Innovations in 2015 | Bioenergy...

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Bioenergy Staff Honored for Top Innovations in 2015 May 24, 2016 Photo of a group of ten ... Transfer Excellence Awards to the bioenergy team of (from left to right) Wesley ...

  18. NREL Bioenergy Staff Honored for Top Innovations in 2015 | Awards...

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Bioenergy Staff Honored for Top Innovations in 2015 May 24, 2016 Photo of a group of ten ... Transfer Excellence Awards to the bioenergy team of (from left to right) Wesley ...

  19. Feynman Center for Innovation honors top technical trailblazers

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Feynman Center honors top technical trailblazers Feynman Center for Innovation honors top technical trailblazers Breakthroughs tap Los Alamos science for commercial application, from high-performance computing to geothermal energy. July 19, 2016 Fuel Cell Performance and Durability Gary Grider (second from right) with the 2015 Richard P. Feynman Innovation Prize. Also pictured (left to right): Duncan McBranch, Chief Technology Officer of Los Alamos National Laboratory; Terry Wallace, Program

  20. Buried and Encapsulated Ducts - Building America Top Innovation |

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Department of Energy Buried and Encapsulated Ducts - Building America Top Innovation Buried and Encapsulated Ducts - Building America Top Innovation photo of worker blowing insulation on ducts in an attic. Ductwork installed in unconditioned attics can significantly increase the heating and cooling costs of homes, resulting in thermal losses of 10%-45% of total space conditioning energy use. To address this problem, Building America researchers from the Consortium for Advanced Residential

  1. Energy Department Recognizes Nation's Top Green Power Programs |

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Department of Energy Nation's Top Green Power Programs Energy Department Recognizes Nation's Top Green Power Programs November 16, 2011 - 1:08pm Addthis WASHINGTON, D.C. - The U.S. Department of Energy (DOE) today recognized four leading organizations for expanding the market for electricity produced from renewable energy sources during the 11th annual Green Power Leadership Awards in San Francisco, Calif. These organizations' innovative "green power" programs provide consumers

  2. Laboratory named a top-50 employer for Latina women

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Laboratory named a top-50 employer for Latina women Community Connections: Your link to news and opportunities from Los Alamos National Laboratory Latest Issue:November 2, 2016 all issues All Issues » submit Laboratory named a top-50 employer for Latina women Los Alamos is the first national laboratory to be recognized by Latina Style magazine. October 3, 2016 Leah Sanchez started her career at Los Alamos as a student. Leah Sanchez, group leader for the Human Resources Field & Central

  3. Furnace Blower Performance Improvements - Building America Top Innovation |

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Department of Energy Furnace Blower Performance Improvements - Building America Top Innovation Furnace Blower Performance Improvements - Building America Top Innovation This photo shows a circular-shaped blower fan for furnaces and air conditioners. As homeowners switch on their forced-air furnaces in preparation for cold weather, they may be unaware of how furnace blowers can impact HVAC efficiency. In fact, studies show that the most common blowers have efficiencies of only 10%-15%.

  4. The top quark (20 years after the discovery)

    SciTech Connect

    Boos, Eduard; Brandt, Oleg; Denisov, Dmitri; Denisov, Sergey; Grannis, Paul

    2015-09-10

    On the twentieth anniversary of the observation of the top quark, we trace our understanding of this heaviest of all known particles from the prediction of its existence, through the searches and discovery, to the current knowledge of its production mechanisms and properties. We also discuss the central role of the top quark in the Standard Model and the windows that it opens for seeking new physics beyond the Standard Model.

  5. Los Alamos scientists win top American Physical Society prizes

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Los Alamos scientists win top American Physical Society prizes Los Alamos scientists win top American Physical Society prizes Two senior scientists at Los Alamos National Lab are being honored by the American Physical Society (APS) for their fundamental contributions in nuclear physics and biophysics. October 18, 2016 Alan Perelson (left), of Los Alamos' Theoretical Biology and Biophysics group, and Joe Carlson of the Lab's Nuclear and Particle Physics, Astrophysics and Cosmology group, won two

  6. NREL Facility Named One of Nation's Top Sustainable Buildings |

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Department of Energy NREL Facility Named One of Nation's Top Sustainable Buildings NREL Facility Named One of Nation's Top Sustainable Buildings June 24, 2011 - 12:31pm Addthis The 222,000 sq. ft. RSF has been recognized for its innovative construction and efficiency. | Courtesy of Dennis Schroeder, National Renewable Energy Laboratory staff photographer. The 222,000 sq. ft. RSF has been recognized for its innovative construction and efficiency. | Courtesy of Dennis Schroeder, National

  7. National Residential Efficiency Measures Database - Building America Top

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Innovation | Department of Energy National Residential Efficiency Measures Database - Building America Top Innovation National Residential Efficiency Measures Database - Building America Top Innovation Image of a man insulating the ceiling of a home. Robust cost data for energy-efficiency measures provide an essential framework for transforming the housing industry to high-performance homes. These data allow for effective optimization capabilities to guide builders, researchers, HERS raters,

  8. Next Generation Advanced Framing - Building America Top Innovation |

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Department of Energy Advanced Framing - Building America Top Innovation Next Generation Advanced Framing - Building America Top Innovation This photo shows advanced framing on a rim header and looking through to a house in the distance. Building America field studies involving thousands of homes have verified significant savings in energy, materials, and labor when production builders apply advanced framing techniques-exceeding $1,000 per home. Building America researchers at Partnership for

  9. Building America's Top Innovations Advance High Performance Homes |

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Department of Energy Building America's Top Innovations Advance High Performance Homes Building America's Top Innovations Advance High Performance Homes Innovations sponsored by the U.S. Department of Energy's (DOE) Building America program and its teams of building science experts continue to have a transforming impact, leading our nation's home building industry to high-performance homes. Building America researchers have worked directly with more than 300 U.S. production home builders and

  10. Jefferson Lab Recognizes Top Small Business Subcontractor for 2008 |

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Jefferson Lab Recognizes Top Small Business Subcontractor for 2008 Jefferson Lab Recognizes Top Small Business Subcontractor for 2008 groundbreaking D.G.S. President Ruth Seeley and her husband, Don, vice president and project manager, received the 2008 Jefferson Science Associates/JLab Outstanding Small Business Subcontractor award. Photo: Greg Adams NEWPORT NEWS, Va., April 27, 2009 - D.G.S. Painting Inc., a Yorktown-based business that provides a range of custom-painting services, has

  11. Tapping Top University Draft Picks to Engineer Solar Championships |

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Department of Energy Top University Draft Picks to Engineer Solar Championships Tapping Top University Draft Picks to Engineer Solar Championships February 2, 2012 - 3:03pm Addthis The Office of Energy Efficiency and Renewable Energy offers a variety of internships, fellowships, and scholarships in addition to the postdoctoral research awards. Current SunShot fellows pose in front of the Apollo Lunar Module at the National Air and Space Museum. | Energy Department file photo. The Office of

  12. Attic Air Sealing Guide - Building America Top Innovation | Department of

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Energy Attic Air Sealing Guide - Building America Top Innovation Attic Air Sealing Guide - Building America Top Innovation Image showing step-by-step instructions for air sealing. One of the most effective energy measures for retrofitting homes across the United States is attic air sealing. The Building America-sponsored Guide to Attic Air Sealing provides much needed instruction essential to achieving effective energy savings while avoiding pitfalls that can lead to combustion safety and

  13. High-Efficiency Window Air Conditioners - Building America Top Innovation |

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Department of Energy Window Air Conditioners - Building America Top Innovation High-Efficiency Window Air Conditioners - Building America Top Innovation This photo shows a window air conditioning unit in place in a window frame. Window air conditioners are inexpensive, portable, and can be installed by home occupants, making them a good solution for spot cooling and for installing air conditioning into homes that lack ductwork. However, window air conditioners have low minimum efficiency

  14. Groundwater, Legacy Soil Cleanup and Flood Recovery Top Lab's

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Accomplishments | Department of Energy Groundwater, Legacy Soil Cleanup and Flood Recovery Top Lab's Accomplishments Groundwater, Legacy Soil Cleanup and Flood Recovery Top Lab's Accomplishments December 23, 2014 - 12:00pm Addthis Los Alamos National Laboratory’s chromium remediation project is located in a canyon adjacent to pueblo lands. Los Alamos National Laboratory's chromium remediation project is located in a canyon adjacent to pueblo lands. A 1,000-year rain event in September

  15. HVAC Cabinet Air Leakage Test Method - Building America Top Innovation |

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Department of Energy Cabinet Air Leakage Test Method - Building America Top Innovation HVAC Cabinet Air Leakage Test Method - Building America Top Innovation While HVAC installers have improved their air sealing practices to reduce the amount of air leaking at ducts and duct boots, testing showed that distribution systems still leaked at air handlers and furnace HVAC Air Leakage Fig 1 Air handler furnace cabinet with pressure taps.jpg cabinets. This has hampered the ability of HVAC

  16. Dateline Los Alamos: Top Science News for 2013

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Top Science News for 2013 Dateline Los Alamos: Top Science News for 2013 HIV vaccine, Mars water, climate change, birth of a black hole, thwarting terrorists among topics of interest Los Alamos outstanding science and technology achievements for 2013 December 24, 2013 los alamos acheivements This photo shows a laser pulse at Los Alamos National Laboratory's TRIDENT facility striking a thin foil target to produce neutrons that can be used to interrogate closed containers and determine the amount

  17. Unvented, Conditioned Attics - Building America Top Innovation | Department

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    of Energy Attics - Building America Top Innovation Unvented, Conditioned Attics - Building America Top Innovation This photo shows an attic that is conditioned (insulated) and showing ductwork. The preference for a large segment of the U.S. housing industry has been to locate HVAC systems in unconditioned attics, but this is highly inefficient. The additional heat loss and gain of ducts in unconditioned, vented attics increases energy use for heating and cooling by 10%. Additionally, duct

  18. Water Management Guide - Building America Top Innovation | Department of

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Energy Water Management Guide - Building America Top Innovation Water Management Guide - Building America Top Innovation Cover of the EEBA Water Management Guide. As energy codes and voluntary programs such as ENERGY STAR for Homes and the DOE Zero Energy Ready Home (formerly Challenge Home) continue transforming the housing industry to high performance, better insulated and air-sealed assemblies now have substantially reduced tolerance for drying. As a result, managing bulk water flow has

  19. Applied Field Research Initiative Deep Vadose Zone

    Office of Environmental Management (EM)

    Applied Field Research Initiative Deep Vadose Zone Located on the Hanford Site in Richland, Washington, the Deep Vadose Zone Applied Field Research Initiative (DVZ AFRI) was established to protect water resources by addressing the challenge of preventing contamination in the deep vadose zone from reaching groundwater. Led by the Pacific Northwest National Laboratory, the Initiative is a collaborative effort that leverages Department of Energy (DOE) investments in basic science and applied

  20. A new scoring function for top-down spectral deconvolution

    SciTech Connect

    Kou, Qiang; Wu, Si; Liu, Xiaowen

    2014-12-18

    Background: Top-down mass spectrometry plays an important role in intact protein identification and characterization. Top-down mass spectra are more complex than bottom-up mass spectra because they often contain many isotopomer envelopes from highly charged ions, which may overlap with one another. As a result, spectral deconvolution, which converts a complex top-down mass spectrum into a monoisotopic mass list, is a key step in top-down spectral interpretation. Results: In this paper, we propose a new scoring function, L-score, for evaluating isotopomer envelopes. By combining L-score with MS-Deconv, a new software tool, MS-Deconv+, was developed for top-down spectral deconvolution. Experimental results showed that MS-Deconv+ outperformed existing software tools in top-down spectral deconvolution. Conclusions: L-score shows high discriminative ability in identification of isotopomer envelopes. Using L-score, MS-Deconv+ reports many correct monoisotopic masses missed by other software tools, which are valuable for proteoform identification and characterization.

  1. Spin Measurement in Top Quark Events at the LHC

    SciTech Connect

    Linacre, Jacob

    2015-01-01

    Measurements of polarisation and spin correlations are presented in events with top quarks produced in pp collisions at the LHC. The data correspond to integrated luminosities of $5 fb^{-1}$ at $\\sqrt{s}$ = 7 TeV and 20 $fb^{-1}$ at $\\sqrt{s}$ = 8 TeV collected with the ATLAS and CMS detectors. The top quark polarization is measured in both single top quark production in the t-channel and $t\\bar{t}$ pair-production, from the angular distributions of charged leptons in the rest frame of their parent top quark. The spin correlations are measured in $t\\bar{t}$ events using various angular distributions of the decay products. The measurements are made using both template fitting methods and by unfolding the distributions to the parton-level, where differential measurements with respect to the invariant mass, rapidity, and transverse momentum of the $t\\bar{t}$ system are also made. The spin correlation measurements are used to search for new physics in the form of a light top squark or an anomalous top quark chromo-magnetic dipole moment. All measurements are found to be in agreement with predictions of the standard model.

  2. A new scoring function for top-down spectral deconvolution

    DOE PAGES [OSTI]

    Kou, Qiang; Wu, Si; Liu, Xiaowen

    2014-12-18

    Background: Top-down mass spectrometry plays an important role in intact protein identification and characterization. Top-down mass spectra are more complex than bottom-up mass spectra because they often contain many isotopomer envelopes from highly charged ions, which may overlap with one another. As a result, spectral deconvolution, which converts a complex top-down mass spectrum into a monoisotopic mass list, is a key step in top-down spectral interpretation. Results: In this paper, we propose a new scoring function, L-score, for evaluating isotopomer envelopes. By combining L-score with MS-Deconv, a new software tool, MS-Deconv+, was developed for top-down spectral deconvolution. Experimental results showedmore » that MS-Deconv+ outperformed existing software tools in top-down spectral deconvolution. Conclusions: L-score shows high discriminative ability in identification of isotopomer envelopes. Using L-score, MS-Deconv+ reports many correct monoisotopic masses missed by other software tools, which are valuable for proteoform identification and characterization.« less

  3. Deep Ultrasound Enhancements Final Report

    SciTech Connect

    Quarry, M; Thomas, G; Ward, W; Gardner, D

    2006-05-01

    This study involves collaboration between Los Alamos National Laboratory and Lawrence Livermore National Laboratory to enhance and optimize LANL's ultrasonic inspection capabilities for production. Deep-penetrating ultrasonic testing enhancement studies will extend the current capabilities, which only look for disbonds. Current ultrasonic methods in production use 15-20 MHz to inspect for disbonds. The enhanced capabilities use 5 MHz to penetrate to the back surface and image the back surface for any flaws. The enhanced capabilities for back surface inspection use transducers and squirter modifications that can be incorporated into the existing production system. In a production setup the current 15-20 MHz transducer and squirter would perform a bond inspection, followed by a deep inspection that would be performed by simply swapping out the 5 MHz transducer and squirter. Surrogate samples were manufactured of beryllium and bismuth to perform the ultrasonic enhancement studies. The samples were used to simulate flaws on the back surface and study ultrasound's ability to image them. The ultrasonic technique was optimized by performing experiments with these samples and analyzing transducer performance in detecting flaws in the surrogate. Beam patterns were also studied experimentally using a steel ball reflector to measure beam patterns, focal points, and sensitivities to better understand the relationship between design and performance. Many transducers were evaluated including transducers from LANL's production system, LLNL, and other commercially available transducers. Squirter design was also analyzed while performing experiments Flat-bottom holes and ball-mill defects of various sizes were introduced into the samples for experimentation. Flaws depths were varied from .020'' to 0.060'', and diameters varied from 0.0625'' to 0.187''. The smallest defect, .020'' depth and 0.0625'', was detected. Ultrasonic amplitude features produced better images than time

  4. Transportation Energy Futures: Combining Strategies for Deep...

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    ENERGY FUTURES Combining Strategies for Deep Reductions in Energy Consumption and GHG Emissions Significant Energy Consumption - and Opportunities for Reduction Transportation is...

  5. Vehicle Technologies Program Deep Dive Briefing

    SciTech Connect

    none,

    2009-09-22

    Deep-Dive briefing presentation dated September 22, 2009. Included in the briefing are mission, goals, targets, and budget of the Vehicle Technologies Program.

  6. DeepStream Technologies | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Place: Bangor, United Kingdom Zip: LL57 4EZ Product: DeepStream Technologies produces digital sensors and controls that measure, monitor, and manage energy usage. References:...

  7. Low Surface Recombination Velocity in Solution-Grown CH3NH3PbBr3 Perovskite

    Office of Scientific and Technical Information (OSTI)

    Single Crystal (Journal Article) | DOE PAGES Low Surface Recombination Velocity in Solution-Grown CH3NH3PbBr3 Perovskite Single Crystal Title: Low Surface Recombination Velocity in Solution-Grown CH3NH3PbBr3 Perovskite Single Crystal Organic-inorganic hybrid perovskites are attracting intense research effort due to their impressive performance in solar cells. While the carrier transport parameters such as mobility and bulk carrier lifetime shows sufficient characteristics, the surface

  8. Bench-Top Engine System for Fast Screening of Alternative Fuels...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Bench-Top Engine System for Fast Screening of Alternative Fuels and Fuel Additives Bench-Top Engine System for Fast Screening of Alternative Fuels and Fuel Additives A bench-top ...

  9. AmeriFlux US-Br3 Brooks Field Site 11- Ames

    SciTech Connect

    Parkin, Tim; Prueger, John

    2016-01-01

    This is the AmeriFlux version of the carbon flux data for the site US-Br3 Brooks Field Site 11- Ames. Site Description - The Brooks Field Site 11 - Ames Site is one of three sites (Brooks Field Site 10 and Brooks Field Site 1011) located in a corn/soybean agricultural landscape of central Iowa. The farming systems, associated tillage, and nutrient management practices for soybean/corn production are typical of those throughout Upper Midwest Corn Belt. All three sites are members of the AmeriFlux network. Information for all three can be found in synchronous pages of this website.

  10. AmeriFlux US-Br1 Brooks Field Site 10- Ames

    DOE Data Explorer

    Parkin, Tim [USDA; Prueger, John [National Laboratory for Agriculture and the Environment

    2016-01-01

    This is the AmeriFlux version of the carbon flux data for the site US-Br1 Brooks Field Site 10- Ames. Site Description - The Brooks Field Site 10 - Ames Site is one of three sites (Brooks Field Site 11 and Brooks Field Site 1011) located in a corn/soybean agricultural landscape of central Iowa. The farming systems, associated tillage, and nutrient management practices for soybean/corn production are typical of those throughout Upper Midwest Corn Belt. All three sites are members of the AmeriFlux network. Information for all three can be found in synchronous pages of this website.

  11. Br-rich Tips of Calcified Crab Claws are Less Hard but More Fracture

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Resistant: A Comparison of Mineralized and Heavy-element Biological Materials Br-rich Tips of Calcified Crab Claws are Less Hard but More Fracture Resistant: A Comparison of Mineralized and Heavy-element Biological Materials figure 1 Figure 1. The heavy element biomaterial is the darker material at the tip of the shore crab claws. Figure "b" shows the same claw as "a" but after bead blasting. The claw tips are less eroded by the bead blasting than surrounding calcified

  12. Social Media and Messages That Matter: Top Tips and Tools Peer...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Social Media and Messages That Matter: Top Tips and Tools Peer Exchange Call Social Media and Messages That Matter: Top Tips and Tools Peer Exchange Call July 9...

  13. Colorado Start-Up Awarded First 'America's Next Top Energy Innovator...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Colorado Start-Up Awarded First 'America's Next Top Energy Innovator' Agreement Colorado Start-Up Awarded First 'America's Next Top Energy Innovator' Agreement May 20, 2011 - ...

  14. Advanced Combustion Engine R&D: Goals, Strategies, and Top Accomplishm...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Engine R&D: Goals, Strategies, and Top Accomplishments Advanced Combustion Engine R&D: Goals, Strategies, and Top Accomplishments PDF icon advcombustiongoals.pdf More Documents &...

  15. VariableR reclustering in multiple top quark events - Oral Presentatio...

    Office of Scientific and Technical Information (OSTI)

    VariableR reclustering in multiple top quark events - Oral Presentation Citation Details In-Document Search Title: VariableR reclustering in multiple top quark events - Oral...

  16. From Shop Floor to Top Floor: Best Business Practices in Energy...

    OpenEI (Open Energy Information) [EERE & EIA]

    Shop Floor to Top Floor: Best Business Practices in Energy Efficiency Jump to: navigation, search Tool Summary LAUNCH TOOL Name: From Shop Floor to Top Floor: Best Business...

  17. Top quark physics at the Tevatron results and prospects

    SciTech Connect

    K. Sliwa

    2002-10-16

    The methodology of CDF and D0 top quark analyses and their underlying assumptions are summarized. The CDF and D0 top mass averages, obtained from measurements in several channels and based on about 100 pb{sup -1} of data from p{bar p} collisions at {radical}s = 1.8 TeV collected by each experiment in Run-I, are: M{sub t} = 176.1 {+-} 4.0(stat) {+-} 5.1(syst) GeV/c{sup 2} and M{sub t} = 172.1 {+-} 5.2(stat) {+-} 4.9(syst) Gev/C{sup 2}, respectively. The combined Tevatron measurement of the top quark mass is M{sub t} = 174.3 {+-} 3.2(stat) {+-} 4.0(syst) GeV/c{sup 2}. The CDF measurement of the t{bar t} cross section (assuming M{sub t} = 175 GeV/c{sup 2}) is {sigma}{sub tt} = 6.5 {+-} {sub 1.4}{sup 1.6} pb, and the D0 value (assuming M{sub t} = 172.1 GeV/c{sup 2}) is {sigma}{sub tt} = 5.9 {+-} 1.7 pb. In anticipation of much larger statistics, prospects for top physics in Tevatron Run-II are summarized. The fact that top quark analyses are among the best windows to physics beyond the Standard Model is emphasized.

  18. Search for baryon number violation in top-quark decays

    DOE PAGES [OSTI]

    Chatrchyan, Serguei

    2014-02-20

    A search for baryon number violation (BNV) in top-quark decays is performed using pp collisions produced by the LHC at sqrt(s) = 8 TeV. The top-quark decay considered in this search results in one light lepton (muon or electron), two jets, but no neutrino in the final state. Data used for the analysis were collected by the CMS detector and correspond to an integrated luminosity of 19.5 inverse femtobarns. The event selection is optimized for top quarks produced in pairs, with one undergoing the BNV decay and the other the standard model hadronic decay to three jets. No significant excessmore » of events over the expected yield from standard model processes is observed. The upper limits at 95% confidence level on the branching fraction of the BNV top-quark decay are calculated to be 0.0016 and 0.0017 for the muon and the electron channels, respectively. Assuming lepton universality, an upper limit of 0.0015 results from the combination of the two channels. These limits are the first that have been obtained on a BNV process involving the top quark.« less

  19. Top quark mass measurement using the template method at CDF

    SciTech Connect

    Aaltonen, T; Alvarez Gonzalez, B; Amerio, S; Amidei, D; Anastassov, A; Annovi, A; Antos, J; Apollinari, G; Appel, J A; Apresyan, A; Arisawa, T

    2011-06-03

    We present a measurement of the top quark mass in the lepton+jets and dilepton channels of tt? decays using the template method. The data sample corresponds to an integrated luminosity of 5.6 fb-1 of pp? collisions at Tevatron with ?s = 1.96 TeV, collected with the CDF II detector. The measurement is performed by constructing templates of three kinematic variables in the lepton+jets and two kinematic variables in the dilepton channel. The variables are two reconstructed top quark masses from different jets-to-quarks combinations and the invariant mass of two jets from the W decay in the lepton+jets channel, and a reconstructed top quark mass and mT2, a variable related to the transverse mass in events with two missing particles, in the dilepton channel. The simultaneous fit of the templates from signal and background events in the lepton+jets and dilepton channels to the data yields a measured top quark mass of Mtop = 172.11.1 (stat)0.9 (syst) GeV/c2.

  20. Fuel loading of PeBR for a long operation life on the lunar surface

    SciTech Connect

    Schriener, T. M.; El-Genk, M. S.

    2012-07-01

    The Pellet Bed Reactor (PeBR) power system could provide 99.3 kW e to a lunar outpost for 66 full power years and is designed for no single point failures. The core of this fast energy spectrum reactor consists of three sectors that are neutronically and thermally coupled, but hydraulically independent. Each sector has a separate Closed Brayton Cycle (CBC) loop for energy conversion and separate water heat-pipes radiator panels for heat rejection. He-Xe (40 g/mole) binary gas mixture serves as the reactor coolant and CBC working fluid. On the lunar surface, the emplaced PeBR below grade is loaded with spherical fuel pellets (1-cm in dia.). It is launched unfueled and the pellets are launched in separate subcritical canisters, one for each core sector. This paper numerically simulates the transient loading of a core sector with fuel pellets on the Moon. The simulation accounts for the dynamic interaction of the pellets during loading and calculates the axial and radial distributions of the volume porosity in the sector. The pellets pack randomly with a volume porosity of 0.39 - 0.41 throughout most of the sector, except near the walls the local porosity is higher. (authors)

  1. Thermal properties for the thermal-hydraulics analyses of the BR2 maximum nominal heat flux.

    SciTech Connect

    Dionne, B.; Kim, Y. S.; Hofman, G. L.

    2011-05-23

    This memo describes the assumptions and references used in determining the thermal properties for the various materials used in the BR2 HEU (93% enriched in {sup 235}U) to LEU (19.75% enriched in {sup 235}U) conversion feasibility analysis. More specifically, this memo focuses on the materials contained within the pressure vessel (PV), i.e., the materials that are most relevant to the study of impact of the change of fuel from HEU to LEU. This section is regrouping all of the thermal property tables. Section 2 provides a summary of the thermal properties in form of tables while the following sections present the justification of these values. Section 3 presents a brief background on the approach used to evaluate the thermal properties of the dispersion fuel meat and specific heat capacity. Sections 4 to 7 discuss the material properties for the following materials: (i) aluminum, (ii) dispersion fuel meat (UAlx-Al and U-7Mo-Al), (iii) beryllium, and (iv) stainless steel. Section 8 discusses the impact of irradiation on material properties. Section 9 summarizes the material properties for typical operating temperatures. Appendix A elaborates on how to calculate dispersed phase's volume fraction. Appendix B shows the evolution of the BR2 maximum heat flux with burnup.

  2. Coring in deep hardrock formations

    SciTech Connect

    Drumheller, D.S.

    1988-08-01

    The United States Department of Energy is involved in a variety of scientific and engineering feasibility studies requiring extensive drilling in hard crystalline rock. In many cases well depths extend from 6000 to 20,000 feet in high-temperature, granitic formations. Examples of such projects are the Hot Dry Rock well system at Fenton Hill, New Mexico and the planned exploratory magma well near Mammoth Lakes, California. In addition to these programs, there is also continuing interest in supporting programs to reduce drilling costs associated with the production of geothermal energy from underground sources such as the Geysers area near San Francisco, California. The overall progression in these efforts is to drill deeper holes in higher temperature, harder formations. In conjunction with this trend is a desire to improve the capability to recover geological information. Spot coring and continuous coring are important elements in this effort. It is the purpose of this report to examine the current methods used to obtain core from deep wells and to suggest projects which will improve existing capabilities. 28 refs., 8 figs., 2 tabs.

  3. Measurement of the top quark mass in the dilepton channel

    SciTech Connect

    Abazov, V.M.; Abbott, B.; Abolins, M.; Acharya, B.S.; Adams, M.; Adams, T.; Agelou, M.; Aguilo, E.; Ahn, S.H.; Ahsan, M.; Alexeev, G.D.; /Buenos Aires U. /Rio de Janeiro, CBPF /Rio de Janeiro State U. /Sao Paulo, IFT /Alberta U. /Simon Fraser U. /York U., Canada /McGill U. /Hefei, CUST /Andes U., Bogota /Charles U.

    2006-09-01

    We present a measurement of the top quark mass in the dilepton channel based on approximately 370 pb{sup -1} of data collected by the D0 experiment during Run II of the Fermilab Tevatron collider. We employ two different methods to extract the top quark mass. We show that both methods yield consistent results using ensemble tests of events generated with the D0 Monte Carlo simulation. We combine the results from the two methods to obtain a top quark mass m{sub t} = 178.1 {+-} 8.2 GeV. The statistical uncertainty is 6.7 GeV and the systematic uncertainty is 4.8 GeV.

  4. Neural Networks for Analysis of Top Quark Production

    SciTech Connect

    B. Abbott et al.

    1999-08-04

    Neural networks (NNs) provide a powerful and flexible tool for selecting a signal from a larger background. The D0 collaboration has used them extensively in studying t{anti t} decays. NNs were essential to the measurement of the t{anti t} production cross section in the all-jets channel (t{anti t} {yields} b {anti b}qqqq), and were also used in the measurement of the mass of the top quark in the lepton+jets channel (t{anti t} {yields} b{anti b}l{nu}q{anti q}). This paper will describe two new applications of neural networks to top quark analysis: the search for single top quark production, and an effort to increase the sensitivity in the dilepton channel t{anti t} {yields} b{anti b}e{anti {mu}}{nu}{anti {nu}} beyond that achieved in the published analysis.

  5. Building America Top Innovations 2013 Profile - Zero Energy-Ready

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Single-Family Homes | Department of Energy Building America Top Innovations 2013 Profile - Zero Energy-Ready Single-Family Homes Building America Top Innovations 2013 Profile - Zero Energy-Ready Single-Family Homes Many Building America teams (ARBI, BA-PIRC, BSC, CARB, IBACOS, NorthernSTAR, PHI, etc.) have worked with home builders to design and test zero-energy-ready homes. ba_in_2.1.6_zeroenergyhomes_100213.pdf (807.25 KB) More Documents & Publications Zero Energy-Ready Single-Family

  6. Top quark mass measurement at CDF Run-II

    SciTech Connect

    T. Maruyama

    2004-05-11

    CDF has resumed the top quark mass measurement with upgraded detectors and Tevatron complex. High statistics should allow us to determine the top mass with an uncertainty of a few GeV/c{sup 2} by the end of Run II. The current measured value, using an integrated luminosity of {approx} 108 pb{sup -1}, is 177.5{sub -9.4}{sup +12.7} (stat.) {+-} 7.1(syst.) GeV/c{sup 2} (lepton + jets with one b-jet tagged mode: the current best mode), which is consistent with RunI measurements.

  7. Search for Single Top Production at the Tevatron

    SciTech Connect

    Gresele, Ambra; /INFN, Trento

    2006-05-01

    The authors report on a search for Standard Model t-channel and s-channel single top quark production in p{bar p} collisions at a center of mass energy of 1.96 TeV. The authors use a data sample corresponding to 0.7 fb{sup -1} recorded by the upgraded Collider Detector at Fermilab (CDFII) and a data sample corresponding to 370 pb{sup -1} recorded by D0. Both CDF and D0 find no significant evidence for electroweak top quark production and set upper limits at the 95% confidence level on the production cross section.

  8. Success at Sandia - Attracting Top Native American STEM Professionals to

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    the Department of Energy | Department of Energy Success at Sandia - Attracting Top Native American STEM Professionals to the Department of Energy Success at Sandia - Attracting Top Native American STEM Professionals to the Department of Energy December 7, 2011 - 12:35pm Addthis Dr. Stan Atcitty, a Sandia engineer, works on power electronics and energy storage integration to the grid. A program run by Sandia Labs for Native Americans in STEM paid for his Master's and Ph.D. degrees while he

  9. Top 100 U.S. Oil and Gas Fields

    Energy Information Administration (EIA) (indexed site)

    Top 100 U.S. Oil and Gas Fields March 2015 Independent Statistics & Analysis www.eia.gov U.S. Department of Energy Washington, DC 20585 U.S. Energy Information Administration | Top 100 U.S. Oil and Gas Fields i This report was prepared by the U.S. Energy Information Administration (EIA), the statistical and analytical agency within the U.S. Department of Energy. By law, EIA's data, analyses, and forecasts are independent of approval by any other officer or employee of the United States

  10. ESnet Named One of Top Government IT Innovators - Again

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    ESnet Named One of Top Government IT Innovators - Again News & Publications ESnet News Media & Press Publications and Presentations Galleries ESnet Awards and Honors Contact Us Media Jon Bashor, jbashor@lbl.gov, +1 510 486 5849 or Media@es.net Technical Assistance: 1 800-33-ESnet (Inside the US) 1 800-333-7638 (Inside the US) 1 510-486-7600 (Globally) 1 510-486-7607 (Globally) Report Network Problems: trouble@es.net Provide Web Site Feedback: info@es.net ESnet Named One of Top Government

  11. NATURAL GAS RESOURCES IN DEEP SEDIMENTARY BASINS

    SciTech Connect

    Thaddeus S. Dyman; Troy Cook; Robert A. Crovelli; Allison A. Henry; Timothy C. Hester; Ronald C. Johnson; Michael D. Lewan; Vito F. Nuccio; James W. Schmoker; Dennis B. Riggin; Christopher J. Schenk

    2002-02-05

    From a geological perspective, deep natural gas resources are generally defined as resources occurring in reservoirs at or below 15,000 feet, whereas ultra-deep gas occurs below 25,000 feet. From an operational point of view, ''deep'' is often thought of in a relative sense based on the geologic and engineering knowledge of gas (and oil) resources in a particular area. Deep gas can be found in either conventionally-trapped or unconventional basin-center accumulations that are essentially large single fields having spatial dimensions often exceeding those of conventional fields. Exploration for deep conventional and unconventional basin-center natural gas resources deserves special attention because these resources are widespread and occur in diverse geologic environments. In 1995, the U.S. Geological Survey estimated that 939 TCF of technically recoverable natural gas remained to be discovered or was part of reserve appreciation from known fields in the onshore areas and State waters of the United. Of this USGS resource, nearly 114 trillion cubic feet (Tcf) of technically-recoverable gas remains to be discovered from deep sedimentary basins. Worldwide estimates of deep gas are also high. The U.S. Geological Survey World Petroleum Assessment 2000 Project recently estimated a world mean undiscovered conventional gas resource outside the U.S. of 844 Tcf below 4.5 km (about 15,000 feet). Less is known about the origins of deep gas than about the origins of gas at shallower depths because fewer wells have been drilled into the deeper portions of many basins. Some of the many factors contributing to the origin of deep gas include the thermal stability of methane, the role of water and non-hydrocarbon gases in natural gas generation, porosity loss with increasing thermal maturity, the kinetics of deep gas generation, thermal cracking of oil to gas, and source rock potential based on thermal maturity and kerogen type. Recent experimental simulations using laboratory

  12. High temperature crystal structures and superionic properties of SrCl{sub 2}, SrBr{sub 2}, BaCl{sub 2} and BaBr{sub 2}

    SciTech Connect

    Hull, Stephen; Norberg, Stefan T.; Ahmed, Istaq; Eriksson, Sten G.; Mohn, Chris E.

    2011-11-15

    The structural properties of the binary alkaline-earth halides SrCl{sub 2}, SrBr{sub 2}, BaCl{sub 2} and BaBr{sub 2} have been investigated from ambient temperature up to close to their melting points, using the neutron powder diffraction technique. Fluorite-structured SrCl{sub 2} undergoes a gradual transition to a superionic phase at 900-1100 K, characterised by an increasing concentration of anion Frenkel defects. At a temperature of 920(3) K, the tetragonal phase of SrBr{sub 2} undergoes a first-order transition to a cubic fluorite phase. This high temperature phase shows the presence of extensive disorder within the anion sublattice, which differs from that found in superionic SrCl{sub 2}. BaCl{sub 2} and BaBr{sub 2} both adopt the cotunnite crystal structure under ambient conditions. BaCl{sub 2} undergoes a first-order structural transition at 917(5) K to a disordered fluorite-structured phase. The relationship between the (disordered) crystal structures and the ionic conductivity behaviour is discussed and the influence of the size of the mobile anion on the superionic behaviour is explored. - Graphical abstract: Anomalous behaviour of the lattice expansion of SrCl{sub 2} at temperatures of {approx}1000 K is associated with the gradual transition to a superionic phase, whilst SrBr{sub 2} undergoes a first-order structural transition ({beta}{yields}{alpha}) to a fluorite-structured superionic phase at 920(3) K. Highlights: > Anomalous behaviour of the lattice expansion of SrCl{sub 2} occurs at temperatures {approx}1000 K. > Crystal structure of {beta}-SrBr{sub 2} is described in detail. > On heating, SrBr{sub 2} and BaCl{sub 2} transform to a fluorite-structured superionic phase. > Temperature dependence of the BaCl{sub 2} and BaBr{sub 2} structures is presented. > Nature of the superionic phases within the alkaline-earth halides is discussed.

  13. Fuel Technologies: Goals, Strategies, and Top Accomplishments; Vehicle Technologies Program (Fact Sheet)

    SciTech Connect

    Not Available

    2009-04-01

    Fact sheet describes the top accomplishments, goals, and strategies of DOE's Fuel Technologies sub program.

  14. Materials Technologies: Goals, Strategies, and Top Accomplishments (Brochure), Vehicle Technologies Program (VTP)

    Office of Energy Efficiency and Renewable Energy (EERE)

    Document details the goals, strategies, and top accomplishments of DOE's Materials Technologies subprogram.

  15. Arctic Stratus and Tropical Deep Convection. Integrating Measurements...

    Office of Scientific and Technical Information (OSTI)

    Technical Report: Arctic Stratus and Tropical Deep Convection. Integrating Measurements and Simulations Citation Details In-Document Search Title: Arctic Stratus and Tropical Deep ...

  16. Deep Bed Adsorption Testing using Silver-Functionalized Aerogel...

    Office of Scientific and Technical Information (OSTI)

    Deep Bed Adsorption Testing using Silver-Functionalized Aerogel Citation Details In-Document Search Title: Deep Bed Adsorption Testing using Silver-Functionalized Aerogel Nuclear ...

  17. Deep Borehole Disposal Research: Geological Data Evaluation Alternativ...

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    much of the enhanced geothermal focus on stimulating fracture development (e.g., fracking) at depth is not directly relevant to deep borehole disposal. For deep borehole...

  18. Test of factorization in diffractive deep inelastic scattering...

    Office of Scientific and Technical Information (OSTI)

    Test of factorization in diffractive deep inelastic scattering and photoproduction at HERA Citation Details In-Document Search Title: Test of factorization in diffractive deep ...

  19. Deep Borehole Disposal of Spent Fuel. (Conference) | SciTech...

    Office of Scientific and Technical Information (OSTI)

    Deep Borehole Disposal of Spent Fuel. Citation Details In-Document Search Title: Deep Borehole Disposal of Spent Fuel. Abstract not provided. Authors: Brady, Patrick V. Publication...

  20. Deep Borehole Disposal of Nuclear Waste. (Conference) | SciTech...

    Office of Scientific and Technical Information (OSTI)

    Deep Borehole Disposal of Nuclear Waste. Citation Details In-Document Search Title: Deep Borehole Disposal of Nuclear Waste. Abstract not provided. Authors: Arnold, Bill Walter ;...

  1. Building America Webinar: Results from Phased Deep Retrofits...

    Energy Saver

    Results from Phased Deep Retrofits in Florida Building America Webinar: Results from Phased Deep Retrofits in Florida This presentation by Danny Parker is included in the Building ...

  2. Project Profile: Deep Eutectic Salt Formulations Suitable as...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Deep Eutectic Salt Formulations Suitable as Advanced Heat Transfer Fluids Project Profile: Deep Eutectic Salt Formulations Suitable as Advanced Heat Transfer Fluids Halotechnics ...

  3. MHK Technologies/Deep Green | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    MHK TechnologiesDeep Green < MHK Technologies Jump to: navigation, search << Return to the MHK database homepage Deep Green.jpg Technology Profile Primary Organization Minesto AB...

  4. Research Development and Demonstration Roadmap for Deep Borehole...

    Office of Scientific and Technical Information (OSTI)

    Research Development and Demonstration Roadmap for Deep Borehole Disposal. Citation Details In-Document Search Title: Research Development and Demonstration Roadmap for Deep...

  5. Deep Energy Retrofits & State Applications | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Deep Energy Retrofits & State Applications Deep Energy Retrofits & State Applications This presentation, given through the DOE's Technical Assitance Program (TAP), provides...

  6. Deep Sky Astronomical Image Database Project at NERSC

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Deep Sky Astronomical Image Database Deep Sky Astronomical Image Database Key Challenges: Develop, store, analyze, and make available an astronomical image database of...

  7. Deep Borehole Disposal Research: Geological Data Evaluation Alternativ...

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Deep Borehole Disposal Research: Geological Data Evaluation Alternative Waste Forms and Borehole Seals Citation Details In-Document Search Title: Deep Borehole Disposal Research:...

  8. Presentation at the Weatherization Program Deep Dive Briefing...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Presentation at the Weatherization Program Deep Dive Briefing, November 4, 2009 Presentation at the Weatherization Program Deep Dive Briefing, November 4, 2009 U.S. Department of...

  9. National Library of Energy : Main View : Deep Federated Search

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    National Library of Energy Search Powered By Deep Web Technologies New Search Preferences Powered by Deep Web Technologies energy.gov Office of Scientific and Technical Information...

  10. Chronic, Multi-Contact, Neural Interface for Deep Brain Stimulation...

    Office of Scientific and Technical Information (OSTI)

    Chronic, Multi-Contact, Neural Interface for Deep Brain Stimulation Citation Details In-Document Search Title: Chronic, Multi-Contact, Neural Interface for Deep Brain Stimulation ...

  11. Neural Interface for Deep Brain Stimulation (Conference) | SciTech...

    Office of Scientific and Technical Information (OSTI)

    Neural Interface for Deep Brain Stimulation Citation Details In-Document Search Title: Neural Interface for Deep Brain Stimulation Authors: Tooker, A C ; Madsen, T E ; Crowell, A ; ...

  12. Deep Borehole Disposal of Nuclear Waste: Science Needs. (Conference...

    Office of Scientific and Technical Information (OSTI)

    Deep Borehole Disposal of Nuclear Waste: Science Needs. Citation Details In-Document Search Title: Deep Borehole Disposal of Nuclear Waste: Science Needs. Abstract not provided. ...

  13. Tanzania-Developing Energy Enterprises Project (DEEP) | Open...

    OpenEI (Open Energy Information) [EERE & EIA]

    Developing Energy Enterprises Project (DEEP) Jump to: navigation, search Logo: Tanzania-Developing Energy Enterprises Project (DEEP) Name Tanzania-Developing Energy Enterprises...

  14. Uganda-Developing Energy Enterprises Project (DEEP) | Open Energy...

    OpenEI (Open Energy Information) [EERE & EIA]

    Developing Energy Enterprises Project (DEEP) Jump to: navigation, search Logo: Uganda-Developing Energy Enterprises Project (DEEP) Name Uganda-Developing Energy Enterprises Project...

  15. Kenya-Developing Energy Enterprises Project (DEEP) | Open Energy...

    OpenEI (Open Energy Information) [EERE & EIA]

    Developing Energy Enterprises Project (DEEP) Jump to: navigation, search Logo: Kenya-Developing Energy Enterprises Project (DEEP) Name Kenya-Developing Energy Enterprises Project...

  16. Long-Baseline Neutrino Facility / Deep Underground Neutrino Project...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Long-Baseline Neutrino Facility Deep Underground Neutrino Project (LBNF-DUNE) Long-Baseline Neutrino Facility Deep Underground Neutrino Project (LBNF-DUNE) Long-Baseline ...

  17. OSTIblog Articles in the deep web technologies Topic | OSTI,...

    Office of Scientific and Technical Information (OSTI)

    During that time, working in close partnership with Deep Web Technologies, we have made ... individual source in Science.gov.... Related Topics: deep web technologies, energy portal

  18. Building America Top Innovations 2012: ENERGY STAR for Homes Support

    SciTech Connect

    none,

    2013-01-01

    This Building America Top Innovations profile describes Building America’s technical support to ENERGY STAR for Homes, which has labeled more than 1.3 million ENERGY STAR homes that have delivered $23 billion in energy cost savings and avoided 210 million tons of green-house emissions.

  19. Building America Top Innovations 2012: National Residential Efficiency Measures Database

    SciTech Connect

    none,

    2013-01-01

    This Building America Top Innovations profile describes the DOE-sponsored National Residential Efficiency Measures Database, which contains performance characteristics and cost estimates for nearly 3,000 energy retrofit measures. To date, it is used in four prominent DOE software packages to help optimize energy-efficiency recommendations.

  20. Improved determination of the width of the top quark

    SciTech Connect

    Abazov V. M.; Abbott B.; Acharya B. S.; Adams M.; Adams T.; Alexeev G. D.; Alkhazov G.; Alton A.; Alverson G.; Aoki M.; Askew A.; Asman B.; Atkins S.; Atramentov O.; Augsten K.; Avila C.; BackusMayes J.; Badaud F.; Bagby L.; Baldin B.; Bandurin D. V.; Banerjee S.; Barberis E.; Baringer P.; Barreto J.; Bartlett J. F.; Bassler U.; Bazterra V.; Bean A.; Begalli M.; Belanger-Champagne C.; Bellantoni L.; Beri S. B.; Bernardi G.; Bernhard R.; Bertram I.; Besancon M.; Beuselinck R.; Bezzubov V. A.; Bhat P. C.; Bhatia S.; Bhatnagar V.; Blazey G.; Blessing S.; Bloom K.; Boehnlein A.; Boline D.; Boos E. E.; Borissov G.; Bose T.; Brandt A.; Brandt O.; Brock R.; Brooijmans G.; Bross A.; Brown D.; Brown J.; Bu X. B.; Buehler M.; Buescher V.; Bunichev V.; Burdin S.; Burnett T. H.; Buszello C. P.; Calpas B.; Camacho-Perez E.; Carrasco-Lizarraga M. A.; Casey C. K.; Castilla-Valdez H.; Chakrabarti S.; Chakraborty D.; Chan M.; Chandra A.; Chapon E.; Chen G.; Chevalier-Thery S.; Cho D. K.; Cho S. W.; Choi S.; Choudhary B.; Cihangir S.; Claes D.; Clutter J.; Cooke M.; Cooper W. E.; Corcoran M.; Couderc F.; Cousinou M. -C.; Croc A.; Cutts D.; Das A.; Davies G.; de Jong S. J.; De La Cruz-Burelo E.; Deliot F.; Demina R.; Denisov D.; Denisov S. P.; Desai S.; Deterre C.; DeVaughan K.; Diehl H. T.; Diesburg M.; Ding P. F.; Dominguez A.; Dorland T.; Dubey A.; Dudko L. V.; Duggan D.; Duperrin A.; Dutt S.; Dyshkant A.; Eads M.; Edmunds D.; Ellison J.; Elvira V. D.; Enari Y.; Evans H.; Evdokimov A.; Evdokimov V. N.; Facini G.; Ferbel T.; Fiedler F.; Filthaut F.; Fisher W.; Fisk H. E.; Fortner M.; Fox H.; Fuess S.; Garcia-Bellido A.; Garcia-Guerra G. A.; Gavrilov V.; Gay P.; Geng W.; Gerbaudo D.; Gerber C. E.; Gershtein Y.; Ginther G.; Golovanov G.; Goussiou A.; Graf C. P.; Grannis P. D.; Greder S.; Greenlee H.; Greenwood Z. D.; Gregores E. M.; Grenier G.; Gris Ph.; Grivaz J. -F.; Grohsjean A.; Gruenendahl S.; Gruenewald M. W.; Guillemin T.; Gutierrez G.; Gutierrez P.; Haas A.; Hagopian S.; Haley J.; Han L.; Harder K.; Harel A.; Hauptman J. M.; Hays J.; Head T.; Hebbeker T.; Hedin D.; Hegab H.; Heinson A. P.; Heintz U.; Hensel C.; La Cruz I. Heredia-De; Herner K.; Hesketh G.; Hildreth M. D.; Hirosky R.; Hoang T.; Hobbs J. D.; Hoeneisen B.; Hohlfeld M.; Hubacek Z.; Hynek V.; Iashvili I.; Ilchenko Y.; Illingworth R.; Ito A. S.; Jabeen S.; Jaffre M.; Jamin D.; Jayasinghe A.; Jesik R.; Johns K.; Johnson M.; Jonckheere A.; Jonsson P.; Joshi J.; Jung A. W.; Juste A.; Kaadze K.; Kajfasz E.; Karmanov D.; Kasper P. A.; Katsanos I.; Kehoe R.; Kermiche S.; Khalatyan N.; Khanov A.; Kharchilava A.; Kharzheev Y. N.; Kohli J. M.; Kozelov A. V.; Kraus J.; Kulikov S.; Kumar A.; Kupco A.; Kurca T.; Kuzmin V. A.; Lammers S.; Landsberg G.; Lebrun P.; Lee H. S.; Lee S. W.; Lee W. M.; Lellouch J.; Li H.; Li L.; Li Q. Z.; Lietti S. M.; Lim J. K.; Lincoln D.; Linnemann J.; Lipaev V. V.; Lipton R.; Liu Y.; Lobodenko A.; Lokajicek M.; de Sa R. Lopes; Lubatti H. J.; Luna-Garcia R.; Lyon A. L.; Maciel A. K. A.; Mackin D.; Madar R.; Magana-Villalba R.; Malik S.; Malyshev V. L.; Maravin Y.; Martinez-Ortega J.; McCarthy R.; McGivern C. L.; Meijer M. M.; Melnitchouk A.; Menezes D.; Mercadante P. G.; Merkin M.; et al.

    2012-05-04

    We present an improved determination of the total width of the top quark, {Gamma}{sub t}, using 5.4 fb{sup -1} of integrated luminosity collected by the D0 Collaboration at the Tevatron p{bar p} Collider. The total width {Gamma}{sub t} is extracted from the partial decay width {Gamma}(t {yields} Wb) and the branching fraction {Beta}(t {yields} Wb). {Gamma}(t {yields} Wb) is obtained from the t-channel single top-quark production cross section and {Beta}(t {yields} Wb) is measured in t{bar t} events. For a top mass of 172.5 GeV, the resulting width is {Gamma}{sub t} = 2.00{sub -0.43}{sup +0.47} GeV. This translates to a top-quark lifetime of {tau}{sub t} = (3.29{sub -0.63}{sup +0.90}) x 10{sup -25} s. We also extract an improved direct limit on the Cabibbo-Kobayashi-Maskawa quark-mixing matrix element 0.81 < |V{sub tb}| {le} 1 at 95% C.L. and a limit of |V{sub tb}| < 0.59 for a high-mass fourth-generation bottom quark assuming unitarity of the fourth-generation quark-mixing matrix.

  1. Building America Top Innovations 2012: Vapor Retarder Classification

    SciTech Connect

    none,

    2013-01-01

    This Building America Top Innovations profile describes research in vapor retarders. Since 2006 the IRC has permitted Class III vapor retarders like latex paint (see list above) in all climate zones under certain conditions thanks to research by Building America teams.

  2. Top quark mass measurement using the template method at CDF

    DOE PAGES [OSTI]

    Aaltonen, T

    2011-06-03

    We present a measurement of the top quark mass in the lepton+jets and dilepton channels of tmore » $$\\bar{t}$$ decays using the template method. The data sample corresponds to an integrated luminosity of 5.6 fb-1 of p$$\\bar{p}$$ collisions at Tevatron with √s = 1.96 TeV, collected with the CDF II detector. The measurement is performed by constructing templates of three kinematic variables in the lepton+jets and two kinematic variables in the dilepton channel. The variables are two reconstructed top quark masses from different jets-to-quarks combinations and the invariant mass of two jets from the W decay in the lepton+jets channel, and a reconstructed top quark mass and mT2, a variable related to the transverse mass in events with two missing particles, in the dilepton channel. The simultaneous fit of the templates from signal and background events in the lepton+jets and dilepton channels to the data yields a measured top quark mass of Mtop = 172.1±1.1 (stat)±0.9 (syst) GeV/c2.« less

  3. Top quark and higgs physics at the tevatron

    SciTech Connect

    Yao, WeiMing

    2004-10-01

    This is a writeup of my lectures given at the International Workshop on Frontiers of High Energy Physics, held at CCAST, Beijing, China during July 2-10. I discuss some basic experimental techniques for studying the Top quark and Higgsboson at the Tevatron, and review some recent results from CDF and D0 and their future prospects.

  4. Precision Top-Quark Mass Measurements at CDF

    SciTech Connect

    Aaltonen, T.; Alvarez Gonzalez, B.; Amerio, S.; Amidei, D.; Anastassov, A.; Annovi, A.; Antos, J.; Apollinari, G.; Appel, J.A.; Arisawa, T.; Artikov, A.; /Dubna, JINR /Texas A-M

    2012-07-01

    We present a precision measurement of the top-quark mass using the full sample of Tevatron {radical}s = 1.96 TeV proton-antiproton collisions collected by the CDF II detector, corresponding to an integrated luminosity of 8.7 fb{sup -1}. Using a sample of t{bar t} candidate events decaying into the lepton+jets channel, we obtain distributions of the top-quark masses and the invariant mass of two jets from the W boson decays from data. We then compare these distributions to templates derived from signal and background samples to extract the top-quark mass and the energy scale of the calorimeter jets with in situ calibration. The likelihood fit of the templates from signal and background events to the data yields the single most-precise measurement of the top-quark mass, mtop = 172.85 {+-} 0.71 (stat) {+-} 0.85 (syst) GeV/c{sup 2}.

  5. Building America Top Innovations 2012: Outside Air Ventilation Controller

    SciTech Connect

    none,

    2013-01-01

    venThis Building America Top Innovations profile describes Building America research showing how automated night ventilation can reduce cooling energy costs up to 40% and peak demand up to 50% in California’s hot-dry central valley climates and can eliminate the need for air conditioning altogether in the coastal marine climate.

  6. Top-grid monolayer graphene/Si Schottkey solar cell

    SciTech Connect

    Wang, Yusheng; Chen, Caiyun; Fang, Xiao; Li, Zhipeng; Qiao, Hong; Sun, Baoquan; Bao, Qiaoliang

    2015-04-15

    Monolayer graphene/Si Schottkey solar cell was fabricated using a top-grid structure. In comparison with the prevailing “top-window” structure, the newly-designed device structure has simplified the fabrication procedures to avoid ultraviolet (UV) photolithography and SiO{sub 2}-eching. We systematically investigated the effect of chemical doping as well as device area on the device performance. It was found that a power conversion efficiency (PCE) of 5.9% can be achieved by engineering the work function of graphene through chemical doping. Our study indicates that top grid structure is suitable to make low-cost, large area and high efficiency graphene/Si Schottkey solar cell. - Graphical abstract: The engineering of the work function of graphene through chemical doping is an effective approach to improve the performance of monolayer graphene/Si Schottky solar cell. - Highlights: • Monolayer graphene/Si Schottkey solar cell was fabricated. • Chemical doping can effectively tune the work function of graphene film. • Chemical doping has significant effect on the device performance. • The top-grid device structure with graphene is promising with low-cost and high efficiency.

  7. Advanced Framing Systems and Packages- Building America Top Innovation

    Energy.gov [DOE]

    This Building America Innovations profile describes Building America research showing advanced 2x6, 24-inch on-center framing, single top plates, open headers, and 2-stud corners reduced board feet of lumber by more than 1,000 feet, cut energy use by 13%, and cut material and labor costs by more than $1,000 on a typical home.

  8. Building America Top Innovations 2012: Unvented, Conditioned Attics

    SciTech Connect

    none,

    2013-01-01

    This Building America Top Innovations profile describes Building America research showing an unvented attic insulated along the roof line provides better energy performance than a vented attic when HVAC ducts are located in the attic and there are numerous penetrations through the ceiling deck.

  9. Infrared fluorescence studies of electronic-to-vibrational energy transfer in a Br2:NO system. Master's thesis

    SciTech Connect

    Hawks, M.R.

    1993-12-01

    Steady-state photolysis techniques were used to study electronic-to-vibrational energy transfer mechanisms from atomic bromine to nitric oxide. Molecular bromine was photodissociated by 488nm radiation to produce equal parts Br(2p(sub 1/2)) and Br(2p (sub 3/2)). Side fluorescence intensity from Br(2p (sub 1/2)) at 2.7 microns and from NO (v =1) and 2 around 5.3 microns measured as a function of bromine pressure and nitric oxide pressure. The branching ratio collisional transfer into the first and second states of NO was determined, and previously reported rates for quenching of NO by molecular bromine were verified. Nitric oxide, Bromine, E-V transfer, Infrared fluorescence, Photolysis.

  10. Tracking Study for Top-off Safety Validation at SSRL

    SciTech Connect

    Huang, X.; Bauer, J.; Corbett, J.; Dell'Orco, D.; Hettel, B.; Liu, J.; Rabedeau, T.; Safranek, J.; Schmerge, J.; Sebek, J.; Tanabe, J.; Terebilo, A.; Wang, L.; ,

    2011-08-19

    A tracking study was performed at SSRL to identify necessary controls and to prove the safety of top-off operation from radiation hazard under such conditions. The safety rationale, tracking setup and the results are presented. Top-off operational mode has become a trend for existing and planned third-generation storage ring light sources for the many benefits such as increased average brightness, improved thermal stability and elimination of the interruption to user experiments due to traditional injection [1, 2]. Unlike the traditional decay mode injection which happens a few times a day and during which the photon beamline shutters are closed, top-off mode injection requires photon beamline shutters to remain open during injection and occurs much more frequently, from once every 5 seconds to once every 30 minutes. Therefore injection may be transparent to user experiments and the stored current variation can be significantly reduced. For a facility equipped with a full-energy injector, the biggest challenge to the implementation of the top-off mode may be the control of radiation hazard. Studies at ALS and SSRL [2, 3] have shown that a single injected electron pulse that enters the photon beamline and exits the radiation shield wall would cause unacceptable radiation doses on the experimental floor. For the protection of users and experimental equipment, it is hence a prerequisite for top-off operation to establish controls that absolutely prevent such occurrences. Similar to other facilities such as ALS and APS [2, 4], tracking simulations were conducted at SSRL to identify the control measures, define the specifications and prove the radiation safety. However, a different approach toward the proof of safety is taken at SSRL. In this paper we first describe the SSRL accelerator complex with emphasis on the aspects related to top-off in section 2. The general considerations and requirements for top-off are presented in section 3. Section 4 and 5 give a detailed

  11. MWD tool for deep, small diameter boreholes

    SciTech Connect

    Buytaert, J.P.R.; Duckworth, A.

    1992-03-17

    This patent describes an apparatus for measuring a drilling parameters while drilling a borehole in an earth formation, wherein the borehole includes a small diameter deep borehole portion and a large diameter upper borehole portion. It includes small diameter drillstring means for drilling the deep borehole portion; sensor means, disposed within the small diameter drillstring means, for measuring a drilling parameter characteristic of the deep portion of the borehole while drilling the deep portion of the borehole and for providing sensor output signals indicative of the measured parameter; an upper drillstring portion extending between the surface of the formation and the small diameter drillstring means, the upper drillstring portion including a large diameter drillstring portion; data transmission means disposed within the large diameter drillstring portion and responsive to the sensor output.

  12. LiCl Dehumidifier LiBr absorption chiller hybrid air conditioning system with energy recovery

    DOEpatents

    Ko, Suk M.

    1980-01-01

    This invention relates to a hybrid air conditioning system that combines a solar powered LiCl dehumidifier with a LiBr absorption chiller. The desiccant dehumidifier removes the latent load by absorbing moisture from the air, and the sensible load is removed by the absorption chiller. The desiccant dehumidifier is coupled to a regenerator and the desiccant in the regenerator is heated by solar heated hot water to drive the moisture therefrom before being fed back to the dehumidifier. The heat of vaporization expended in the desiccant regenerator is recovered and used to partially preheat the driving fluid of the absorption chiller, thus substantially improving the overall COP of the hybrid system.

  13. X-ray-absorption study of CuBr at high pressure

    SciTech Connect

    Tranquada, J.M.; Ingalls, R.

    1986-09-15

    The x-ray-absorption spectrum of cuprous bromide has been measured as a function of pressure. The x-ray-absorption near-edge structure proved to be an excellent indicator of high-pressure phase transitions in this material. The normalized ''white-line'' peak heights at both the Cu and Br K-italic edges decreased on entering the tetragonal phase and increased in going to the NaCl structure. The zinc-blende to tetragonal phase transition took place over a very narrow pressure range centered at 46 +- 5 kbar. The transformation from the tetragonal to the NaCl structure, on the other hand, showed a broad mixed-phase region, suggesting a nucleation-and-growth mechanism for the transition. The mixed-phase region was centered at 75 +- 6 kbar. No evidence of a phase between the zinc-blende and tetragonal phases was observed, presumably because it does not exist. Analysis of the extended x-ray-absorption fine-structure (EXAFS) clearly showed that there is no change in coordination in going from the zinc-blende to the tetragonal phase although the nearest-neighbor distance increases slightly. A much larger increase in R-italic/sub 1/ occurs at the transition to the NaCl structure, where the coordination increases from 4 to 6. The mean-square deviation in the nearest-neighbor bond length, sigma/sub 1//sup 2/, appears to be a fairly smooth function of nearest-neighbor distance, decreasing (or increasing) as R-italic/sub 1/ decreases (or increases) more or less independent of structure. Evidence from the literature was presented to suggest that the zinc-blende to tetragonal transition in CuBr (and also CuCl) should occur by shear deformation.

  14. Molecular Characterization of Brown Carbon (BrC) Chromophores in Secondary Organic Aerosol Generated From Photo-Oxidation of Toluene

    SciTech Connect

    Lin, Peng; Liu, Jiumeng; Shilling, John E.; Kathmann, Shawn M.; Laskin, Julia; Laskin, Alexander

    2015-09-28

    Atmospheric Brown carbon (BrC) is a significant contributor to light absorption and climate forcing. However, little is known about a fundamental relationship between the chemical composition of BrC and its optical properties. In this work, light-absorbing secondary organic aerosol (SOA) was generated in the PNNL chamber from toluene photo-oxidation in the presence of NOx (Tol-SOA). Molecular structures of BrC components were examined using nanospray desorption electrospray ionization (nano-DESI) and liquid chromatography (LC) combined with UV/Vis spectroscopy and electrospray ionization (ESI) high-resolution mass spectrometry (HRMS). The chemical composition of BrC chromophores and the light absorption properties of toluene SOA (Tol-SOA) depend strongly on the initial NOx concentration. Specifically, Tol-SOA generated under high-NOx conditions (defined here as initial NOx/toluene of 5/1) appears yellow and mass absorption coefficient of the bulk sample (MACbulk@365nm = 0.78 m2 g-1) is nearly 80 fold higher than that measured for the Tol-SOA sample generated under low-NOx conditions (NOx/toluene < 1/300). Fifteen compounds, most of which are nitrophenols, are identified as major BrC chromophores responsible for the enhanced light absorption of Tol-SOA material produced in the presence of NOx. The integrated absorbance of these fifteen chromophores accounts for 40-60% of the total light absorbance by Tol-SOA at wavelengths between 300 nm and 500 nm. The combination of tandem LC-UV/Vis-ESI/HRMS measurements provides an analytical platform for predictive understanding of light absorption properties by BrC and their relationship to the structure of individual chromophores. General trends in the UV/vis absorption by plausible isomers of the BrC chromophores were evaluated using theoretical chemistry calculations. The molecular-level understanding of BrC chemistry is helpful for better understanding the evolution and behavior of light absorbing aerosols in the atmosphere.

  15. Low Surface Recombination Velocity in Solution-Grown CH3NH3PbBr3 Perovskite

    Office of Scientific and Technical Information (OSTI)

    Single Crystal (Journal Article) | SciTech Connect Low Surface Recombination Velocity in Solution-Grown CH3NH3PbBr3 Perovskite Single Crystal Citation Details In-Document Search Title: Low Surface Recombination Velocity in Solution-Grown CH3NH3PbBr3 Perovskite Single Crystal Organic-inorganic hybrid perovskites are attracting intense research effort due to their impressive performance in solar cells. While the carrier transport parameters such as mobility and bulk carrier lifetime shows

  16. JLab Recognizes Security Firm as Top Small Business Subcontractor for 2009

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    | Jefferson Lab Recognizes Security Firm as Top Small Business Subcontractor for 2009 JLab Recognizes Security Firm as Top Small Business Subcontractor for 2009 Small Business Mike Dallas, Jefferson Lab's chief operating officer, presents Nicole Stuart, Top Guard president with the Jefferson Science Associates/Jefferson Lab Outstanding Small Business Subcontractor Award for 2009. She is flanked by Chris Stuart, Top Guard vice president and Major Alton Dugger, Top Guard's site supervisor at

  17. Synthesis, crystal structure, spectroscopic and thermal properties of [Et{sub 4}N][Ta{sub 6}Br{sub 12}(H{sub 2}O){sub 6}]Br{sub 4}.4H{sub 2}O (Et=ethyl)-A new compound with the paramagnetic [Ta{sub 6}Br{sub 12}]{sup 3+} cluster core

    SciTech Connect

    Peric, Berislav; Jozic, Drazan; Planinic, Pavica; Brnicevic, Nevenka; Giester, Gerald

    2009-09-15

    A new hexanuclear cluster compound, [Et{sub 4}N][Ta{sub 6}Br{sub 12}(H{sub 2}O){sub 6}]Br{sub 4}.4H{sub 2}O (Et=ethyl) (1), with the paramagnetic [Ta{sub 6}Br{sub 12}]{sup 3+} cluster entity, was synthesized and characterized by elemental and TG/DTA analyses, IR and UV/Vis spectroscopy and by a single-crystal X-ray diffraction study. The presence of the paramagnetic [Ta{sub 6}Br{sub 12}]{sup 3+} unit was confirmed also by the room-temperature magnetic and EPR measurements. The compound crystallizes in the tetragonal I4{sub 1}/a space group, with a=14.299(5), c=21.241(5) A, Z=4, R{sub 1}(F)/wR{sub 2}(F{sup 2})=0.0296/0.0811. The structure contains discrete [Ta{sub 6}Br{sub 12}(H{sub 2}O){sub 6}]{sup 3+} cations with an octahedron of metal atoms edge-bridged by bromine atoms and with water molecules occupying all six terminal positions. The cluster units are positioned in the vertices of the three-dimensional (pseudo)diamond lattice. The structure shows similarities with literature reported structures of cluster compounds crystallizing in the diamond (Fd3-barm) space group. - Graphical abstract: Two interpenetrating (pseudo)diamond nets formed by packing of the paramagnetic [Ta{sub 6}Br{sub 12}(H{sub 2}O)]{sup 3+} (octahedral) and diamagnetic [Et{sub 4}N]{sup +} (spheres) cations.

  18. Laser activity at 1.18 um, 1.07 um, and 0.97 umin the low phonon energy crystalline hosts KPb2Br5 and RbPb2Br5 doped with Nd3+

    SciTech Connect

    Rademaker, K; Heumann, E; Payne, S A; Huber, G; Krupke, W F; Isaenko, L I; Burger, A

    2004-09-15

    For the first time laser activity has been achieved in the low phonon energy, moisture-resistant bromide host crystals, neodymium-doped potassium lead bromide (Nd{sup 3+}:KPb{sub 2}Br{sub 5}) and rubidium lead bromide (Nd{sup 3+}:RbPb{sub 2}Br{sub 5}). Laser activity at 1.07 {micro}m was observed for both crystalline materials. Laser operation at the new wavelengths 1.18 {micro}m and 0.97 {micro}m resulting from the {sup 4}F{sub 5/2} + {sup 2}H{sub 9/2} {yields} {sup 4}I{sub J} transitions (J=13/2 and 11/2) in Nd:RPB was achieved for the first time in a solid state laser material. Rare earth- doped MPb{sub 2}Br{sub 5} (M=K, Rb) is a promising candidate for long wavelength infrared applications because of its low phonon frequencies and other favorable features. In principle, Nd{sup 3+}:MPb{sub 2}Br{sub 5} has high potential for laser operation at new wavelengths as well as for the realization of short-wavelength lasing due to upconversion processes.

  19. A Precision Measurement of the Top Quark Mass

    SciTech Connect

    Black, Kevin Matthew

    2005-05-01

    This dissertation describes the measurement of the top quark mass using events recorded during a {approx} 230 pb{sup -1} exposure of the D0 detector to proton-anti-proton (p{bar p}) collisions at a center of mass energy of 1.96 TeV. The Standard Model of particle physics predicts that the top quark will decay into a bottom quark and a W boson close to 100% of the time. The bottom quark will hadronize (bind with another quark) and produce a jet of hadronic particles. The W bosons can decay either into a charged lepton and a neutrino or a pair of quarks. this dissertation focuses on the top quark (t{bar t}) events in which one W decays hadronically and the other decays leptonically. Two methods of identifying t{bar t} events from the large number of events produced are used. The first is based on the unique topology of the final state particles of a heavy particle. By using the topological information of the event, the t{bar t} events can be efficiently extracted from the background. The second method relies on the identification of the remnants of the long lived bottom quarks that are expected to be produced in the decay of almost every top quark. Because the largest background processes do not contain bottom quarks, this is an extremely efficient way to select the events retaining about 60% of the t{bar t} events and removing almost 90% of the background. A kinematic fit to the top quark mass is performed on the t{bar t} candidate events using the final state particles that are seen in the detector. A likelihood technique is then used to extract the most likely value of the top quark mass, m{sub t}, and signal fraction. The result for the topological selection is m{sub t} = 169.9 {+-} 5.8(statistical){sub -7.8}{sup +8.0}(systematic) GeV while the results on the sample selected from identification of a b quark in the event is m{sub t} = 170.6 {+-} 4.2(statistical){sub -6.8}{sup +6.3}(systematic) GeV.

  20. Ultra Deep Wave Equation Imaging and Illumination

    SciTech Connect

    Alexander M. Popovici; Sergey Fomel; Paul Sava; Sean Crawley; Yining Li; Cristian Lupascu

    2006-09-30

    In this project we developed and tested a novel technology, designed to enhance seismic resolution and imaging of ultra-deep complex geologic structures by using state-of-the-art wave-equation depth migration and wave-equation velocity model building technology for deeper data penetration and recovery, steeper dip and ultra-deep structure imaging, accurate velocity estimation for imaging and pore pressure prediction and accurate illumination and amplitude processing for extending the AVO prediction window. Ultra-deep wave-equation imaging provides greater resolution and accuracy under complex geologic structures where energy multipathing occurs, than what can be accomplished today with standard imaging technology. The objective of the research effort was to examine the feasibility of imaging ultra-deep structures onshore and offshore, by using (1) wave-equation migration, (2) angle-gathers velocity model building, and (3) wave-equation illumination and amplitude compensation. The effort consisted of answering critical technical questions that determine the feasibility of the proposed methodology, testing the theory on synthetic data, and finally applying the technology for imaging ultra-deep real data. Some of the questions answered by this research addressed: (1) the handling of true amplitudes in the downward continuation and imaging algorithm and the preservation of the amplitude with offset or amplitude with angle information required for AVO studies, (2) the effect of several imaging conditions on amplitudes, (3) non-elastic attenuation and approaches for recovering the amplitude and frequency, (4) the effect of aperture and illumination on imaging steep dips and on discriminating the velocities in the ultra-deep structures. All these effects were incorporated in the final imaging step of a real data set acquired specifically to address ultra-deep imaging issues, with large offsets (12,500 m) and long recording time (20 s).

  1. Ultrafast dynamics of strong-field dissociative ionization ofCH2Br2 probed by femtosecond soft x-ray transient absorptionspectroscopy

    SciTech Connect

    Loh, Zhi-Heng; Leone, Stephen R.

    2008-01-15

    Femtosecond time-resolved soft x-ray transient absorption spectroscopy based on a high-order harmonic generation source is used to investigate the dissociative ionization of CH{sub 2}Br{sub 2} induced by 800 nm strong-field irradiation. At moderate peak intensities (2.0 x 10{sup 14} W/cm{sup 2}), strong-field ionization is accompanied by ultrafast C-Br bond dissociation, producing both neutral Br ({sup 2}P{sub 3/2}) and Br* ({sup 2}P{sub 1/2}) atoms together with the CH{sub 2}Br{sup +} fragment ion. The measured rise times for Br and Br* are 130 {+-} 22 fs and 74 {+-} 10 fs, respectively. The atomic bromine quantum state distribution shows that the Br/Br* population ratio is 8.1 {+-} 3.8 and that the Br {sup 2}P{sub 3/2} state is not aligned. The observed product distribution and the timescales of the photofragment appearances suggest that multiple field-dressed potential energy surfaces are involved in the dissociative ionization process. In addition, the transient absorption spectrum of CH{sub 2}Br{sub 2}{sup +} suggests that the alignment of the molecule relative to the polarization axis of the strong-field ionizing pulse determines the electronic symmetry of the resulting ion; alignment of the Br-Br, H-H, and C{sub 2} axis of the molecule along the polarization axis results in the production of the ion {tilde X}({sup 2}B{sub 2}), {tilde B}({sup 2}B{sub 1}) and {tilde C}({sup 2}A{sub 1}) states, respectively. At higher peak intensities (6.2 x 10{sup 14} W/cm{sup 2}), CH{sub 2}Br{sub 2}{sup +} undergoes sequential ionization to form the metastable CH{sub 2}Br{sub 2}{sup 2+} dication. These results demonstrate the potential of core-level probing with high-order harmonic transient absorption spectroscopy for studying ultrafast molecular dynamics.

  2. Forward-backward asymmetry in top quark-antiquark production

    SciTech Connect

    Abazov, Victor Mukhamedovich [Dubna, JINR; Abbott, Braden Keim [Oklahoma U.; Acharya, Bannanje Sripath [Tata Inst.; Adams, Mark Raymond [Illinois U., Chicago; Adams, Todd [Florida State U.; Alexeev, Guennadi D [Dubna, JINR; Alkhazov, Georgiy D [St. Petersburg, INP; Alton, Andrew K [Michigan U.; Augustana Coll., Sioux Falls; Alverson, George O [Northeastern U.; Alves, Gilvan Augusto [Rio de Janeiro, CBPF; Aoki, Masato [Fermilab; Louisiana Tech. U.

    2011-12-12

    We present a measurement of forward-backward asymmetry in top quark-antiquark production in proton-antiproton collisions in the final state containing a lepton and at least four jets. Using a dataset corresponding to an integrated luminosity of 5.4 fb-1, collected by the D0 experiment at the Fermilab Tevatron Collider, we measure the t{bar t} forward-backward asymmetry to be (9.2 3.7)% at the reconstruction level. When corrected for detector acceptance and resolution, the asymmetry is found to be (19.6 6.5)%. We also measure a corrected asymmetry based on the lepton from a top quark decay, found to be (15.2 4.0)%. The results are compared to predictions based on the next-to-leading-order QCD generator mc@nlo. The sensitivity of the measured and predicted asymmetries to the modeling of gluon radiation is discussed.

  3. The role of top in heavy flavor physics

    SciTech Connect

    Hewett, J.L.

    1997-01-01

    The implications of the massive top quark on heavy flavor transitions are explored. We review the generation of quark masses and mixings and the determination techniques, and present the status of the elements of the weak mixing matrix. Purely leptonic decays of heavy mesons are briefly summarized. We present a general introduction to flavor changing neutral currents and an extensive summary of radiative and other rare decay modes. The physics of neutral meson mixing is reviewed and applied to each meson system. We describe the phenomenology of CP violation and how it may be measured in meson decays. Standard Model predictions are given in each case and the effects of physics beyond the Standard Model are also discussed. Throughout, we contrast these transitions in the K and B meson systems to those in the D meson and top-quark sectors.

  4. Why should we care about the top quark Yukawa coupling?

    DOE PAGES [OSTI]

    Shapshnikov, Mikhail; Bezrukov, Fedor

    2015-04-15

    In the cosmological context, for the Standard Model to be valid up to the scale of inflation, the top quark Yukawa coupling yt should not exceed the critical value ytcrit , coinciding with good precision (about 0.2‰) with the requirement of the stability of the electroweak vacuum. So, the exact measurements of yt may give an insight on the possible existence and the energy scale of new physics above 100 GeV, which is extremely sensitive to yt. In this study, we overview the most recent theoretical computations of and the experimental measurements of ytcrit and the experimental measurements ofmore » yt. Within the theoretical and experimental uncertainties in yt, the required scale of new physics varies from 10⁷ GeV to the Planck scale, urging for precise determination of the top quark Yukawa coupling.« less

  5. Forward-backward asymmetry in top quark-antiquark production

    SciTech Connect

    Abazov, V.M.; Abbott, B.; Acharya, B. S.; Adams, M.; Adams, T.; Alexeev, G. D.; Alkhazov, G.; Alton, A.; Alverson, G.; Alves, G. A.; Aoki, M.; Arov, M.; Askew, A.; Asman, B.; Atramentov, O.; Avila, C.; BackusMayes, J.; Badaud, F.; Bagby, L.; Baldin, B.; Bandurin, D. V.; Banerjee, S.; Barberis, E.; Baringer, P.; Barreto, J.; Bartlett, J. F.; Bassler, U.; Bazterra, V.; Beale, S.; Bean, A.; Begalli, M.; Begel, M.; Belanger-Champagne, C.; Bellantoni, L.; Beri, S. B.; Bernardi, G.; Bernhard, R.; Bertram, I.; Besancon, M.; Beuselinck, R.; Bezzubov, V. A.; Bhat, P. C.; Bhatnagar, V.; Blazey, G.; Blessing, S.; Bloom, K.; Boehnlein, A.; Boline, D.; Boos, E. E.; Borissov, G.; Bose, T.; Brandt, A.; Brandt, O.; Brock, R.; Brooijmans, G.; Bross, A.; Brown, D.; Brown, J.; Bu, X. B.; Buehler, M.; Buescher, V.; Bunichev, V.; Burdin, S.; Burnett, T. H.; Buszello, C. P.; Calpas, B.; Camacho-Perez, E.; Carrasco-Lizarraga, M. A.; Casey, B. C. K.; Castilla-Valdez, H.; Chakrabarti, S.; Chakraborty, D.; Chan, K. M.; Chandra, A.; Chen, G.; Chevalier-Thery, S.; Cho, D. K.; Cho, S. W.; Choi, S.; Choudhary, B.; Cihangir, S.; Claes, D.; Clutter, J.; Cooke, M.; Cooper, W. E.; Corcoran, M.; Couderc, F.; Cousinou, M. -C.; Croc, A.; Cutts, D.; Das, A.; Davies, G.; De, K.; de Jong, S. J.; De La Cruz-Burelo, E.; Deliot, F.; Demarteau, M.; Demina, R.; Denisov, D.; Denisov, S. P.; Desai, S.; Deterre, C.; DeVaughan, K.; Diehl, H. T.; Diesburg, M.; Ding, P. F.; Dominguez, A.; Dorland, T.; Dubey, A.; Dudko, L. V.; Duggan, D.; Duperrin, A.; Dutt, S.; Dyshkant, A.; Eads, M.; Edmunds, D.; Ellison, J.; Elvira, V. D.; Enari, Y.; Evans, H.; Evdokimov, A.; Evdokimov, V. N.; Facini, G.; Ferbel, T.; Fiedler, F.; Filthaut, F.; Fisher, W.; Fisk, H. E.; Fortner, M.; Fox, H.; Fuess, S.; Garcia-Bellido, A.; Gavrilov, V.; Gay, P.; Geng, W.; Gerbaudo, D.; Gerber, C. E.; Gershtein, Y.; Ginther, G.; Golovanov, G.; Goussiou, A.; Grannis, P. D.; Greder, S.; Greenlee, H.; Greenwood, Z. D.; Gregores, E. M.; Grenier, G.; Gris, Ph; Grivaz, J. -F.; Grohsjean, A.; Gruenendahl, S.; Gruenewald, M. W.; Guillemin, T.; Guo, F.; Gutierrez, G.; Gutierrez, P.; Haas, A.; Hagopian, S.; Haley, J.; Han, L.; Harder, K.; Harel, A.; Hauptman, J. M.; Hays, J.; Head, T.; Hebbeker, T.; Hedin, D.; Hegab, H.; Heinson, A. P.; Heintz, U.; Hensel, C.; Heredia-De La Cruz, I.; Herner, K.; Hesketh, G.; Hildreth, M. D.; Hirosky, R.; Hoang, T.; Hobbs, J. D.; Hoeneisen, B.; Hohlfeld, M.; Hubacek, Z.; Huske, N.; Hynek, V.; Iashvili, I.; Ilchenko, Y.; Illingworth, R.; Ito, A. S.; Jabeen, S.; Jaffre, M.; Jamin, D.; Jayasinghe, A.; Jesik, R.; Johns, K.; Johnson, M.; Johnston, D.; Jonckheere, A.; Jonsson, P.; Joshi, J.; Jung, A. W.; Juste, A.; Kaadze, K.; Kajfasz, E.; Karmanov, D.; Kasper, P. A.; Katsanos, I.; Kehoe, R.; Kermiche, S.; Khalatyan, N.; Khanov, A.; Kharchilava, A.; Kharzheev, Y. N.; Kirby, M. H.; Kohli, J. M.; Kozelov, A. V.; Kraus, J.; Kulikov, S.; Kumar, A.; Kupco, A.; Kurca, T.; Kuzmin, V. A.; Kvita, J.; Lammers, S.; Landsberg, G.; Lebrun, P.; Lee, H. S.; Lee, S. W.; Lee, W. M.; Lellouch, J.; Li, L.; Li, Q. Z.; Lietti, S. M.; Lim, J. K.; Lincoln, D.; Linnemann, J.; Lipaev, V. V.; Lipton, R.; Liu, Y.; Liu, Z.; Lobodenko, A.; Lokajicek, M.; de Sa, R. Lopes; Lubatti, H. J.; Luna-Garcia, R.; Lyon, A. L.; Maciel, A. K. A.; Mackin, D.; Madar, R.; Magana-Villalba, R.; Malik, S.; Malyshev, V. L.; Maravin, Y.; Martinez-Ortega, J.; McCarthy, R.; McGivern, C. L.; Meijer, M. M.; Melnitchouk, A.; Menezes, D.; Mercadante, P. G.; Merkin, M.; Meyer, A.; Meyer, J.; Miconi, F.; Mondal, N. K.; Muanza, G. S.; Mulhearn, M.; Nagy, E.; Naimuddin, M.; Narain, M.; Nayyar, R.; Neal, H. A.; Negret, J. P.; Neustroev, P.; Novaes, S. F.; Nunnemann, T.; Obrant, G.; Orbaker, D.; Orduna, J.; Osman, N.; Osta, J.; et. al.

    2011-12-12

    We present a measurement of forward-backward asymmetry in top quark-antiquark production in proton-antiproton collisions in the final state containing a lepton and at least four jets. Using a data set corresponding to an integrated luminosity of 5.4 fb{sup -1}, collected by the D0 experiment at the Fermilab Tevatron Collider, we measure the t{bar t} forward-backward asymmetry to be (9.2 {+-} 3.7)% at the reconstruction level. When corrected for detector acceptance and resolution, the asymmetry is found to be (19.6 {+-} 6.5)%. We also measure a corrected asymmetry based on the lepton from a top quark decay, found to be (15.2 {+-} 4.0)%. The results are compared to predictions based on the next-to-leading-order QCD generator mc@nlo. The sensitivity of the measured and predicted asymmetries to the modeling of gluon radiation is discussed.

  6. Top mass measurements at the Tevatron run II

    SciTech Connect

    Velev, Gueorgui V.; /Fermilab

    2005-10-01

    The latest top quark mass measurements by the CDF and D0 experiments are presented here. The mass has been determined in the dilepton (t{bar t} {yields} e{mu}, ee, {mu}{mu} + jets + E{sub T}) and lepton plus jets (t{bar t} {yields} e or {mu} + jets + E{sub T}) final states. The most accurate single result from lepton plus jets channel is 173.5{sub -3.6}{sup +3.7}(stat. + Jet Energy Scale Systematic) {+-} 1.3(syst.) GeV/c{sup 2}, which is better than the combined CDF and D0 Run I average. A preliminary and unofficial average of the best experimental Run II results gives M{sub top} = 172.7 {+-} 3.5 GeV/c{sup 2}.

  7. Electrodeposition of zinc on glassy carbon from ZnCl/sub 2/ and ZnBr/sub 2/ electrolytes

    SciTech Connect

    McBreen, J.; Gannon, E.

    1983-08-01

    The initial stages of the electrocrystallization of zinc from 3M ZnCl/sub 2/ and 3M ZnBr/sub 2/ on glassy carbon has been investigated using cyclic voltametry, the potential step method, and scanning electron microscopy. Particular care was taken to ensure electrolyte purity and to eliminate resistance effects in the measurements. The nucleation overvoltage in 3M ZnCl/sub 2/ was about 17 and about 12 mV in 3M ZnBr/sub 2/. In 3M ZnCl/sub 2/, the current transients from the potential step measurements could be fitted to a simple model that assumes instantaneous nucleation followed by growth of three dimensional centers under kinetic control. A similar mechanism is operative for 3M ZnBr/sub 2/ at low overvoltages. At higher overvoltages, the current transient is governed by mixed kinetic and diffusion control and cannot be fitted to a simple model. The lower nucleation overvoltage and the faster kinetics in 3M ZnBr/sub 2/ is correlated with the lower stability constants for the zinc bromide complexes. Erroneous results are obtained when resistance effects are not accounted for.

  8. Evaluation of production samples of the scintillators LaBr3:Ce andLaCl3:Ce

    SciTech Connect

    Choong, Woon-Seng; Derenzo, Stephen E.; Moses, William W.

    2005-09-15

    We report on the evaluation of the performance of two recently developed scintillator materials, LaCl{sub 3}:Ce and LaBr{sub 3}:Ce, at the task of gamma ray spectroscopy. Their performance is compared to a standard scintillator used for gamma ray spectroscopy--a 25 mm diameter 25 mm tall cylinder of NaI:Tl. We measure the pulse height, energy resolution, and full-energy efficiency of production LaBr{sub 3}:Ce and LaCl{sub 3}:Ce scintillation crystals of different sizes and geometries for a variety of gamma-ray energies. Using production rather than specially selected crystals will establish whether immediate large-scale use is feasible. The crystal is excited by gamma rays from one of six isotopic sources ({sup 125}I, {sup 241}Am, {sup 57}Co, {sup 22}Na, {sup 137}Cs, and {sup 60}Co) placed 15 cm away from the scintillator. Our measurements show that both LaCl{sub 3} and LaBr{sub 3} outperform NaI:Tl in almost all cases. They outperform NaI:Tl at all energies for the photopeak fraction and counting rate measurements, and for energy resolution at higher energies (above 200 keV for LaCl{sub 3} and 75 keV for LaBr{sub 3}). The performance of production crystals is excellent and these scintillators should be considered for immediate use in systems where stopping power and energy resolution are crucial.

  9. Synthesis and structure of the [OsThio{sub 6}]Br{sub 3} . H{sub 2}O complex

    SciTech Connect

    Rudnitskaya, O. V. Kultyshkina, E. K.; Venskovskii, N. U.; Stash, A. I.

    2007-03-15

    A complex of the composition [OsThio{sub 6}]Br{sub 3} . H{sub 2}O is synthesized by the reaction of H{sub 2}OsBr{sub 6} with thiourea in a 0.5 M HBr solution. The [OsThio{sub 6}]Br{sub 3} . H{sub 2}O complex is characterized using electronic absorption and infrared spectroscopy. The structure of the complex is determined by X-ray diffraction analysis. The crystals are orthorhombic with the unit cell parameters a = 20.510(4) A, b = 11.186(2) A, c = 11.892(2) A, space group Pccn, and Z = 4. The thiourea molecules are coordinated to the osmium atom through the sulfur atom. The osmium atom has an octahedral coordination. The Os-S distances fall in the range 2.39-2.40 A. The outersphere H{sub 2}O molecules and Br{sup -} anions are involved in hydrogen bonds with the NH{sub 2} groups of the thiourea molecules.

  10. A XANES and EXAFS Study of Hydration and Ion Pairing in Ambient Aqueous MnBr[subscript 2] Solutions

    SciTech Connect

    Chen, Yongsheng; Fulton, John L.; Partenheimer, Walter

    2008-09-25

    Extended X-ray absorption fine structure (EXAFS) and X-ray absorption near edge structure (XANES) spectroscopies were used to probe the first-shell coordination structure of Mn(II) in aqueous MnBr{sub 2} solutions at ambient conditions from very dilute to the near saturation limit. The Mn K-edge EXAFS spectra for 0.05 and 0.2 m solutions showed that there was no Br(-I) in the first shell, and that the Mn(II) was fully hydrated with six water molecules in an octahedral arrangement. In contrast, for 6 m solution, the coordination number of water was reduced to about 5, and an average of about one bromine atom was present in the first shell as a contact ion pair. The 1s {yields} 4p transition at 6545.5 eV confirmed the observation of Mn-Br contact ion pairs at high concentrations and the 1s {yields} 3d transition at 6539.5 eV showed that the first shell coordination symmetry remained octahedral even in the presence of Mn-Br ion pairs.

  11. Top quark pair production cross section at the Tevatron

    SciTech Connect

    Cortiana, Giorgio; /INFN, Padua /Padua U.

    2008-04-01

    Top quark pair production cross section has been measured at the Tevatron by CDF and D0 collaborations using different channels and methods, in order to test standard model predictions, and to search for new physics hints affecting the t{bar t} production mechanism or decay. Measurements are carried out with an integrated luminosity of 1.0 to 2.0 fb{sup -1}, and are found to be consistent with standard model expectations.

  12. Top 100 U.S. Oil and Gas Fields

    Energy Information Administration (EIA) (indexed site)

    Natural Gas Glossary › FAQS › Overview Data Summary Prices Exploration & reserves Production Imports/exports Pipelines Storage Consumption All natural gas data reports Analysis & Projections Major Topics Most popular Consumption Exploration & reserves Imports/exports & pipelines Prices Production Projections Recurring Storage All reports Browse by Tag Alphabetical Frequency Tag Cloud Supplement from: U.S. Crude Oil and Natural Gas Proved Reserves Top 100 U.S. Oil and Gas

  13. Reconstructing top quark-antiquark events with one lost jet

    DOE PAGES [OSTI]

    Demina, Regina; Harel, Amnon; Orbaker, Douglas

    2015-04-02

    We present a technique for reconstructing the kinematics of pair-produced top quarks that decay to a charged lepton, a neutrino and four final state quarks in the subset of events where only three jets are reconstructed. We present a figure of merit that allows for a fair comparison of reconstruction algorithms without requiring their calibration. The new reconstruction of events with only three jets is fully competitive with the full reconstruction typically used for four-jet events.

  14. Measurement of W Boson Polarization in Top Quark Decay

    SciTech Connect

    Vickey, Trevor Neil

    2004-11-01

    A measurement of the polarization of the W boson from top quark decay is an excellent test of the V-A form of the charged-current weak interaction in the standard model. Since the longitudinal W boson is intimately related to the electroweak symmetry breaking mechanism, and the standard model gives a specific prediction for the fraction of longitudinal W bosons from top decays, it is of particular interest for study. This thesis presents a measurement of W boson polarization in top quark decays through an analysis of the cos{theta}* distribution in the lepton-plus-jets channel of t{bar t} candidate events from p{bar p} collisions at {radical}s = 1.96 TeV. This measurement uses an integrated luminosity of {approx} 162 pb{sup -1} of data collected with the CDF Run II detector, resulting in 31 t{bar t} candidate events with at least one identified b jet. Using a binned likelihood fit to the cos{theta}* distribution from the t{bar t} candidate events found in this sample, the fraction of W bosons with longitudinal polarization is determined to be F{sub 0} = 0.99{sub -0.35}{sup +0.29}(stat.) {+-} 0.19(syst.), F{sub 0} > 0.33 {at} 95% CL. This result is consistent with the standard model prediction, given a top quark mass of 174.3 GeV/c{sup 2}, of F{sub 0} = 0.701 {+-} 0.012.

  15. CP violating anomalous top-quark couplings at the LHC

    SciTech Connect

    Gupta, Sudhir Kumar; Mete, Alaettin Serhan; Valencia, G.

    2009-08-01

    We study the T odd correlations induced by CP violating anomalous top-quark couplings at both production and decay level in the process gg{yields}tt{yields}(b{mu}{sup +}{nu}{sub {mu}})(b{mu}{sup -}{nu}{sub {mu}}). We consider several counting asymmetries at the parton level and find the ones with the most sensitivity to each of these anomalous couplings at the LHC.

  16. NREL Scientists and Engineers Recognized for Top Innovations as Lab

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Celebrates another Record-Breaking Year of Inventions - News Releases | NREL NREL Scientists and Engineers Recognized for Top Innovations as Lab Celebrates another Record-Breaking Year of Inventions May 3, 2016 Today during its annual Innovation and Technology Transfer Awards ceremony, the U.S. Department of Energy's (DOE) National Renewable Energy Laboratory (NREL) recognized researchers and staff for 169 new innovations, a record-breaking number of scientific and engineering inventions in

  17. NREL Staff Recognized for Top Innovations - News Releases | NREL

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Staff Recognized for Top Innovations Principal Engineer Bhushan Sopori honored for solar research impacts May 9, 2014 The Energy Department's National Renewable Energy Laboratory recently recognized the professionals behind the lab's greatest innovations from the past year during its annual Innovation and Technology Transfer Awards ceremony. The event also celebrated NREL's commercialization and partnering successes, recognizing the researchers and engineers-including three honorees in the new

  18. NREL's Economic Impact Tops $872 Million - News Releases | NREL

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    NREL's Economic Impact Tops $872 Million University of Colorado researchers quantify benefits of national laboratory dedicated to clean energy June 4, 2015 The economic impact of the Energy Department's National Renewable Energy Laboratory (NREL) was $872.3 million nationwide in fiscal year 2014, according to a study by the University of Colorado Boulder's Leeds School of Business. The study estimates NREL's impact to Colorado's economy totaled $701 million, a decline of 1.6 percent from the

  19. Top Quark Production Cross Section at the Tevatron

    SciTech Connect

    Shabalina, E.; /Chicago U.

    2006-05-01

    An overview of the preliminary results of the top quark pair production cross section measurements at a center-of-mass energy of 1.96 TeV carried out by the CDF and D0 collaborations is presented. The data samples used for the analyses are collected in the current Tevatron run and correspond to an integrated luminosity from 360 pb{sup -1} up to 760 pb{sup -1}.

  20. Top 3 Takeaways from the Deputy Energy Secretary's Beijing Speech |

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Department of Energy 3 Takeaways from the Deputy Energy Secretary's Beijing Speech Top 3 Takeaways from the Deputy Energy Secretary's Beijing Speech April 14, 2015 - 12:27pm Addthis Deputy Energy Secretary Sherwood-Randall tours Microsoft's Beijing Campus with Commerce Secretary Penny Pritzker before delivering remarks. | Energy Department Photo. Deputy Energy Secretary Sherwood-Randall tours Microsoft's Beijing Campus with Commerce Secretary Penny Pritzker before delivering remarks. |

  1. Top 500 List Recognizes Fastest Supercomputers | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    00 List Recognizes Fastest Supercomputers Top 500 List Recognizes Fastest Supercomputers June 30, 2014 - 5:25pm Addthis Titan 1 of 4 Titan Oak Ridge National Laboratory's Titan has a theoretical peak performance of more than 27 petaflops, or more than 27 quadrillion calculations per second. This enables researchers across the scientific arena, from materials to climate change to astrophysics, to acquire unparalleled accuracy in their simulations and achieve research breakthroughs more rapidly

  2. Top quark mass measurement from dilepton events at CDF II

    SciTech Connect

    Abulencia, A.; Acosta, D.; Adelman, Jahred A.; Affolder, Anthony A.; Akimoto, T.; Albrow, M.G.; Ambrose, D.; Amerio, S.; Amidei, D.; Anastassov, A.; Anikeev, K.; /Taiwan, Inst. Phys. /Argonne /Barcelona, IFAE /Baylor U. /INFN, Bologna /Brandeis U. /UC, Davis /UCLA /UC, San Diego /UC, Santa Barbara /Cantabria Inst. of Phys.

    2005-12-01

    We report a measurement of the top quark mass using events collected by the CDF II Detector from p{bar p} collisions at {radical}s = 1.96 TeV at the Fermilab Tevatron. We calculate a likelihood function for the top mass in events that are consistent with t{bar t} {yields} {bar b}{ell}{sup -}{bar {nu}}{sub {ell}}b{ell}{prime}{sup +}{nu}{sub {ell}}{prime} decays. The likelihood is formed as the convolution of the leading-order matrix element and detector resolution functions. The joint likelihood is the product of likelihoods for each of 33 events collected in 340 pb{sup -1} of integrated luminosity, yielding a top quark mass M{sub t} = 165.2 {+-} 6.1(stat.) {+-} 3.4(syst.) GeV/c{sup 2}. This first application of a matrix-element technique to t{bar t} {yields} b{ell}{sup +}{nu}{sub {ell}}{bar b}{ell}{prime}{sup -}{bar {nu}}{sub {ell}}, decays gives the most precise single measurement of M{sub t} in dilepton events. Combined with other CDF Run II measurements using dilepton events, we measure M{sub t} = 167.9 {+-} 5.2(stat.) {+-} 3.7(syst.) GeV/c{sup 2}.

  3. Recent results on top quark physics at CDF

    SciTech Connect

    Gallinaro, M.; CDF Collaboration

    1997-01-01

    We present the latest results on the top quark obtained by the CDF experiment using a data sample of about 110 pb{sup -1}. The data sample has been collected at the FermiLab Tevatron Collider with p{anti p} collisions at {radical}s = 1.8 TeV. We briefly describe the candidate event selection and then discuss the production cross section determination and the mass measurement. Combining the results from the channels with at least one W decaying leptonically into an electron or muon, we measure {sigma}{sub t{anti t}} = 7.5{sup +1.9}{sub -1.6} pb. Our best measured value for the top mass gives M{sub t} = 176.8{+-}6.5 GeV/c{sup 2}. We also report on the observation of t{anti t} production in the all hadronic decay channel using kinematic selection and b identification, and in the channel containing one hadronically decaying {tau} lepton. Finally we discuss the kinematics of top events and measure the matrix element {vert_bar}V{sub tb}{vert_bar}=1.12{+-}0.12.

  4. Determination of the width of the top quark

    SciTech Connect

    Abazov, Victor Mukhamedovich; Abbott, Braden Keim; Abolins, Maris A.; Acharya, Bannanje Sripath; Adams, Mark Raymond; Adams, Todd; Alexeev, Guennadi D.; Alkhazov, Georgiy D.; Alton, Andrew K.; Alverson, George O.; Alves, Gilvan Augusto; /Rio de Janeiro, CBPF /Nijmegen U.

    2010-09-01

    We extract the total width of the top quark, {Lambda}{sub t}, from the partial decay width {Lambda}(t {yields} Wb) measured using the t-channel cross section for single top quark production and from the branching fraction B(t {yields} Wb) measured in t{bar t} events using up to 2.3 fb{sup -1} of integrated luminosity collected by the D0 Collaboration at the Tevatron p{bar p} Collider. The result is {Lambda}{sub t} = 1.99{sub -0.55}{sup +0.69} GeV, which translates to a top-quark lifetime of {tau}{sub t} = (3.3{sub -0.9}{sup +1.3}) x 10{sup -25} s. Assuming a high mass fourth generation b{prime} quark and unitarity of the four-generation quark-mixing matrix, we set the first upper limit on |V{sub tb{prime}}| < 0.63 at 95% C.L.

  5. Electroweak and top physics at CDF in Run II

    SciTech Connect

    A. Taffard

    2003-06-12

    The CDF experiment at the Tevatron has used p{bar p} collisions at {radical}s = 1.96 TeV to measure the production cross sections of W and Z bosons using several leptonic final states. An indirect measurement of the W width and the ratio of tau and electron electroweak couplings have been extracted. The forward-backward charge asymmetry, A{sub FB}, in Drell-Yan dilectron production has been measured up to an invariant mass of 600 GeV/c{sup 2}. CDF has also started looking for WW production in the dilepton channel, WW{prime} {yields} ll{prime}vv, with the aim of measuring its cross section and derive limits on the anomalous WWZ and WW{gamma} couplings. The presence of a top quark signal in the Tevatron data has been reestablished by measuring the top quark pair production cross section in the dilepton channel, t{bar t} {yields} WbW{bar b} {yields} {bar l}v{sub l}bl{prime}{bar v}{sub l{prime}}{bar b} and in the lepton plus jets channel, t{bar t} {yields} WbW{bar b} {yields} q{bar q}lbl{bar b}{sub l}{bar b} + {bar l}v{sub l}bq{bar q}{prime}{bar b}. A pre-tagged lepton plus jets sample has also been used to reconstruct the top quark mass.

  6. Highly efficient inverted top emitting organic light emitting diodes using a transparent top electrode with color stability on viewing angle

    SciTech Connect

    Kim, Jung-Bum; Lee, Jeong-Hwan; Moon, Chang-Ki; Kim, Jang-Joo, E-mail: jjkim@snu.ac.kr [Department of Materials Science and Engineering, Seoul National University, Seoul 151-742 (Korea, Republic of)

    2014-02-17

    We report a highly efficient phosphorescent green inverted top emitting organic light emitting diode with excellent color stability by using the 1,4,5,8,9,11-hexaazatriphenylene-hexacarbonitrile/indium zinc oxide top electrode and bis(2-phenylpyridine)iridium(III) acetylacetonate as the emitter in an exciplex forming co-host system. The device shows a high external quantum efficiency of 23.4% at 1000?cd/m{sup 2} corresponding to a current efficiency of 110?cd/A, low efficiency roll-off with 21% at 10?000?cd/m{sup 2} and low turn on voltage of 2.4?V. Especially, the device showed very small color change with the variation of ?x?=?0.02, ?y?=?0.02 in the CIE 1931 coordinates as the viewing angle changes from 0 to 60. The performance of the device is superior to that of the metal/metal cavity structured device.

  7. New proppant for deep hydraulic fracturing

    SciTech Connect

    Underdown, D.R.; Das, K.

    1982-01-01

    Much work has been done in the development and evaluation of various materials for use as proppants for hydraulic fracturing. Sand is most often used as a frac proppant in shallow wells. Deep wells having high closure stresses require a proppant such as sintered bauxite which will not crush under such adverse conditions. Proppants such as ceramic and zirconium oxide beads and resin coated sand have been developed for deep hydraulic fracturing; however, use of these materials has been limited. A new frac proppant has been developed which exhibits the properties necessary for use in deep hydraulic fracturing. This frac proppant is produced by precuring a specially modified phenol-formaldehyde resin onto sand. The new frac proppant maintains conductivity and resists crushing, similar to that of sintered bauxite at high closure stress. 11 references.

  8. New proppant for deep hydraulic fracturing

    SciTech Connect

    Das, K.; Underdown, D.R.

    1985-01-01

    Much work has focused on developing and evaluating various materials for use as proppants for hydraulic fracturing. Sand is used most often as a fracturing proppant in shallow wells. Deep wells with high closure stresses require a proppant, such as sintered bauxite, that will not crush under adverse conditions. Ceramic and zirconium oxide beads and resin-coated sand proppants also have been developed for deep hydraulic fracturing. A new fracturing proppant has been developed that exhibits the properties necessary for use in deep hydraulic fracturing. This proppant is produced by precuring a specially modified phenolformaldehyde resin onto sand. The new proppant maintains conductivity and resists crushing much better than does sand. The new proppant was compared to intermediate-density sintered bauxitic proppants and cured-in-place proppants and the tests were confirmed by an independent laboratory.

  9. Ag/AgBr/g-C{sub 3}N{sub 4}: A highly efficient and stable composite photocatalyst for degradation of organic contaminants under visible light

    SciTech Connect

    Cao, Jing; Zhao, Yijie; Lin, Haili; Xu, Benyan; Chen, Shifu

    2013-10-15

    Graphical abstract: Ag/AgBr/g-C{sub 3}N{sub 4} composite photocatalysts displayed excellent photocatalytic activities on the degradation of methyl orange (MO) under visible light. The improved photocatalytic performance and stability of Ag/AgBr/g-C{sub 3}N{sub 4} originated from the synergetic effects of AgBr/g-C{sub 3}N{sub 4} interface and metallic Ag nanoparticles. O{sub 2}?, one of the reactive species, was responsible for the photodegradation of MO compared to H+ and OH. - Highlights: Novel Ag/AgBr/g-C{sub 3}N{sub 4} composite photocatalyst was reported. Ag/AgBr/g-C{sub 3}N{sub 4} had novel energy band combination between AgBr and g-C{sub 3}N{sub 4}. Synergetic effects of AgBr/g-C{sub 3}N{sub 4} interface and metallic Ag nanoparticles. Electron trapping role of metallic Ag dominated the stability of Ag/AgBr/g-C{sub 3}N{sub 4}. - Abstract: Novel Ag/AgBr/g-C{sub 3}N{sub 4} composite photocatalysts were constructed via depositionprecipitation method and extensively characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), high-resolution transmission electron microscopy (HRTEM) and UVvis diffuse reflectance spectroscopy (DRS). Under visible light (? > 420 nm), Ag/AgBr/g-C{sub 3}N{sub 4} composite photocatalysts displayed much higher photocatalytic activities than those of Ag/AgBr and g-C{sub 3}N{sub 4} for degradation of methyl orange (MO). 50% Ag/AgBr/g-C{sub 3}N{sub 4} presented the best photocatalytic performance, which was mainly attributed to the synergistic effects of AgBr/g-C{sub 3}N{sub 4} interface and the in situ metallic Ag nanoparticles for efficiently separating electronhole pairs. Furthermore, Ag/AgBr/g-C{sub 3}N{sub 4} remained good photocatalytic activity through 5 times of cycle experiments. Additionally, the radical scavengers experiment indicated that O{sub 2}{sup ?} was the main reactive species for the MO degradation under visible light.

  10. PNNL: News Center - Home - Top Stories from Pacific Northwest National

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Laboratory Search Subscribe RSS Carbon dioxide tucked into basalt converts to rock PNNL wins 2 R&D 100 awards for underground cleanup, carbon capture Fuel from sewage is the future - and it's closer than you think State's three largest public research institutions to increase collaboration Deep down fracking wells, microbial communities thrive PNNL to partner with University of Oregon on materials science and more A cooperative way to make ammonia Powered for life: Self-charging tag

  11. Deep Energy Retrofit Case Studies: Lessons Learned

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Deep Energy Retrofit Case Studies: Lessons Learned. Alea German Alliance for Residential Building Innovation June 25, 2014 Davis Energy Group | June 25, 2014 ‹#› Agenda * Background / motivation * Results from 3 CA retrofits - Sonoma Passive House Retrofit - Stockton Hot Dry Retrofit - Sunnyvale Marine Deep Retrofit Davis Energy Group | June 25, 2014 ‹#› Background * >60 million homes in the U.S. over 30 yrs old * Huge potential - Energy savings ‹#› Davis Energy Group | June 25,

  12. Partonic Nuclear Effects in Deep Inelastic Scattering

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Partonic Nuclear Effects in Deep Inelastic Scattering Measurement of Partonic Nuclear Effects in Deep-Inelastic Neutrino Scattering using MINERvA Phys. Rev. D 93, 071101 (2016) and hep-ex/1601.06313 Data Ancillary files for this result are available at http://arxiv.org/src/1601.06313v3/anc The available data files are: Readme file: please read before using ROOT File of all ratios / error matrices C code of all Ratios and Error Matrices for Carbon / Scintillator C code of all Ratios and Error

  13. Direct molecular diffusion and micro-mixing for rapid dewatering of LiBr solution

    SciTech Connect

    Bigham, S; Isfahani, RN; Moghaddam, S

    2014-03-01

    A slow molecular diffusion rate often limits the desorption process of an absorbate molecule from a liquid absorbent. To enhance the desorption rate, the absorbent is often boiled to increase the liquid vapor interfacial area. However, the growth of bubbles generated during the nucleate boiling process still remains mass-diffusion limited. Here, it is shown that a desorption rate higher than that of boiling can be achieved, if the vapor absorbent interface is continuously replenished with the absorbate-rich solution to limit the concentration boundary layer growth. The study is conducted in a LiBr-water-solution, in which the water molecules' diffusion rate is quite slow. The manipulation of the vapor solution interface concentration distribution is enabled by the mechanical confinement of the solution flow within microchannels, using a hydrophobic vapor-venting membrane and the implementation of microstructures on the flow channel's bottom wall. The microstructures stretch and fold the laminar streamlines within the solution film and produce vortices. The vortices continuously replace the concentrated solution at the vapor solution interface with the water-rich solution brought from the bottom and middle of the flow channel. The physics of the process is described using a combination of experimental and numerical studies. Published by Elsevier Ltd.

  14. The corrosion phenomena in the coin cell BR2325 of the ``superstoichiometric fluorocarbon-lithium'' system

    SciTech Connect

    Mitkin, V.N.; Galkin, P.S.; Denisova, T.N.

    1998-07-01

    It was noted at the earlier study and at the longer observations of the novel various types of superstoichiometric fluorocarbon materials CF{sub 1+x}, where x = 0.1--0.33 (FCM) and their behavior, that despite of their known hygroscopity during a storage of samples in laboratory and technological utensils nevertheless occurs an appreciable sorption of atmospheric moisture. The color of samples does not change but sometimes there appears a smell of hydrogen fluoride and even corrosion of glasswares at a long storage. On the basis of these facts was assumed that at a long storage the slow reactions of HF producing with a sorption moisture can proceed. This phenomena is necessary to take into account for successful manufacturing of long life lithium cells based on superstoichiometric fluorocarbon composite cathodes (FCC). The chemistry of such slow hydrolytic process and especially of processes which can proceed at manufacturing of FCC earlier was not investigated also of any data in the literature in this occasion is not present. Just for this reason the authors undertook a study of the corrosion phenomena which can proceed in industrial sources of a current at a long storage under influence of slow hydrolysis of C-F bonds by moisture. The goal of the study was to search long term damages in the slightly wet FCM and based on these materials cathodic composites for fluorocarbon-lithium cells. As a model for corrosion process investigation they have chosen a standard coin lithium battery of a type BR2325.

  15. Photoluminescence characteristics of polariton condensation in a CuBr microcavity

    SciTech Connect

    Nakayama, Masaaki Murakami, Katsuya; Furukawa, Yoshiaki; Kim, DaeGwi

    2014-07-14

    We have investigated the photoluminescence (PL) properties of a CuBr microcavity at 10?K, including the temporal profiles, from the viewpoint of cavity-polariton condensation. The excitation energy density dependence of the PL intensity (band width) of the lower polariton branch at an in-plane wave vector of k{sub //}?=?0 exhibits a threshold-like increase (decrease). A large blueshift in the PL energy of ?10?meV caused by the cavity-polariton renormalization is correlated with the excitation energy density dependence of the PL intensity. The estimated density of photogenerated electron-hole pairs at the threshold is two orders lower than the Mott transition density. These results consistently demonstrate the occurrence of cavity-polariton condensation. In addition, we found that the PL rise and decay times are shortened dramatically by the cavity-polariton condensation, which reflects the bosonic final state stimulation in the relaxation process and the intrinsic cavity-polariton lifetime in the decay process.

  16. Synthesis and photocatalytic performance of an efficient Ag@AgBr/K{sub 2}Ti{sub 4}O{sub 9} composite photocatalyst under visible light

    SciTech Connect

    Liang, Yinghua; Lin, Shuanglong; Liu, Li; Hu, Jinshan; Cui, Wenquan

    2014-08-15

    Highlights: The plasmatic Ag@AgBr sensitized K{sub 2}Ti{sub 4}O{sub 9} composite photocatalysts. Ag@AgBr greatly increased visible light absorption for K{sub 2}Ti{sub 4}O{sub 9}. The plamonic photocatalysts exhibited enhanced activity for the degradation of RhB. - Abstract: Ag@AgBr nanoparticle-sensitized K{sub 2}Ti{sub 4}O{sub 9} composite photocatalysts (Ag@AgBr/K{sub 2}Ti{sub 4}O{sub 9}) were prepared by a facile precipitationphotoreduction method. The photocatalytic activities of the Ag@AgBr/K{sub 2}Ti{sub 4}O{sub 9} nanocomposites were evaluated for photocatalytic degradation of (RhB) under visible light irradiation. The composites exhibited excellent visible light absorption, which was attributable to the surface plasmon effect of Ag nanoparticles. The Ag@AgBr was uniformly scattered on the surface of K{sub 2}Ti{sub 4}O{sub 9} and possessed sizes in the range of 2050 nm. The loading amount of Ag@AgBr was also studied, and was found to influence the absorption spectra of the resulting composites. Approximately 95.9% of RhB was degraded by Ag@AgBr (20 wt.%)/K{sub 2}Ti{sub 4}O{sub 9} after irradiation for 1 h. The stability of the material was also investigated by performing consecutive runs. Additionally, studies performed using radical scavengers indicated that O{sub 2}{sup ?} and Br{sup 0} acted as the main reactive species. Based on the experimental results, a photocatalytic mechanism for organics degradation over Ag@AgBr/K{sub 2}Ti{sub 4}O{sub 9} photocatalysts was proposed.

  17. Wave Energy Prize Narrowed from 92 Teams to Top 20 | Department...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Wave Energy Prize Narrowed from 92 Teams to Top 20 Wave Energy Prize Narrowed from 92 Teams to Top 20 August 14, 2015 - 2:16pm Addthis Wave Energy Prize Narrowed from 92 Teams to...

  18. Top 10 Things You Didn't Know About Distributed Wind Power |...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Top 10 Things You Didn't Know About Distributed Wind Power August 10, 2015 - 8:20am Addthis Small-Scale Distributed Wind: Northern Power Systems 100 kW turbine at the top of Burke ...

  19. Denver Post Names NREL as a Top Work Place - News Releases |...

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    as a Top Work Place April 17, 2013 The U.S. Department of Energy's (DOE) National Renewable Energy Laboratory (NREL) has been recognized by the Denver Post as a "2013 Top Work...

  20. Joules of Wisdom: Top Things You Didn't Know About Energy | Department...

    Energy.gov [DOE] (indexed site)

    Joules of Wisdom: Top Things You Didn't Know About Energy Explore the world of energy through our blog series, Joules of Wisdom: Top Things You Didn't Know About Energy. From the...

  1. Fact #765: February 4, 2013 EPA's Top 10 Conventionally-Fueled...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Fueleconomy.gov's Top Ten EPA-Rated Fuel Sippers, 2013* Table showing top ten EPA-rated fuel sippers for 2013. See table below for more detailed information. *Excludes electric and ...

  2. Fact #631: July 12, 2010 Top 10 All-Time EPA Rated Vehicles ...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    1: July 12, 2010 Top 10 All-Time EPA Rated Vehicles Fact 631: July 12, 2010 Top 10 All-Time EPA Rated Vehicles Fueleconomy.gov is the official source for light vehicle fuel ...

  3. What Are Your Top Tips for Saving Energy? | Department of Energy

    Energy.gov [DOE] (indexed site)

    What Are Your Top Tips for Saving Energy? Earlier this week, John Chu shared with us his Top 10 Tips to Save Energy and Money This Summer. But since most of the country is in the ...

  4. Zero Energy-Ready Single-Family Homes - Building America Top...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    View other Top Innovations in the House-as-a-System Business Case category. Zero Energy-Ready Single-Family Homes (766.18 KB) More Documents & Publications Building America Top ...

  5. Fact #641: September 20, 2010 Top States for the Production of...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Missouri was the second largest producer of trucks for that year. Top States for Car Production, Calendar Year 2009 Graph showing the top states for car production in 2009. ...

  6. Top Quark Physics at the Tevatron (Journal Article) | SciTech...

    Office of Scientific and Technical Information (OSTI)

    Journal Article: Top Quark Physics at the Tevatron Citation Details In-Document Search Title: Top ... Publication Date: 2010-10-01 OSTI Identifier: 1001397 Report Number(s): ...

  7. Top 10 Things You Didn't Know About Lawrence Livermore National...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Livermore National Laboratory Top 10 Things You Didn't Know About Lawrence Livermore ... Learn more by browsing other articles in the "Top Things You Didn't Know About" series. ...

  8. Top 10 Things You Didn't Know About Lawrence Berkeley National...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Berkeley National Laboratory Top 10 Things You Didn't Know About Lawrence Berkeley ... energy facts by browsing other articles in the "Top Things You Didn't Know About" series. ...

  9. Sandia Energy - Optical performance of top-down fabricated InGaN...

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    performance of top-down fabricated InGaNGaN nanorod light emitting diode arrays" in Optics Express. This paper details the development of a two-step top-down process for...

  10. The Business Case for Fuel Cells 2010: Why Top Companies are...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    0: Why Top Companies are Purchasing Fuel Cells Today The Business Case for Fuel Cells 2010: Why Top Companies are Purchasing Fuel Cells Today This report was developed by Fuel ...

  11. DOE Data ID Service Top Navigation | OSTI, US Dept of Energy...

    Office of Scientific and Technical Information (OSTI)

    Service Top Navigation DOE Data ID Service Top Navigation My Profile Create Review OSTI.Gov Newsletter - Issue 16 Manage Search form Search this site Search Who's online There ...

  12. The Business Case for Fuel Cells 2010: Why Top Companies are...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    The Business Case for Fuel Cells 2010: Why Top Companies are Purchasing Fuel Cells Today The Business Case for Fuel Cells 2010: Why Top Companies are Purchasing Fuel Cells Today ...

  13. Top 10 Most Popular Energy Savers Web Pages of 2011 | Department...

    Energy Saver

    Top 10 Most Popular Energy Savers Web Pages of 2011 Top 10 Most Popular Energy Savers Web Pages of 2011 December 27, 2011 - 9:08am Addthis Chris Stewart Senior Communicator at ...

  14. Top 5 Maps and Interactive Graphics of 2014 | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Top 5 Maps and Interactive Graphics of 2014 Top 5 Maps and Interactive Graphics of 2014 December 22, 2014 - 12:05pm Addthis Daniel Wood Daniel Wood Data Visualization and...

  15. House-as-a-System Business Case - Building America Top Innovations...

    Energy Saver

    House-as-a-System Business Case - Building America Top Innovations House-as-a-System Business Case - Building America Top Innovations August 25, 2014 - 10:48am Addthis...

  16. The physics of top, w and z from LHC, Tevatron and HERA

    SciTech Connect

    Shabalina, Elizaveta; /Gottingen U.

    2010-12-01

    We summarize recent experimental results in electroweak and top quark physics presented at the conference. This overview covers new measurements of the properties of top quark and W and Z bosons from the LHC, Tevatron and HERA.

  17. JV between Brehon Far East and Top Energy | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Brehon Far East and Top Energy Jump to: navigation, search Name: JV between Brehon Far East and Top Energy Place: China Sector: Hydro, Hydrogen Product: JV to provide all hydrogen...

  18. Publisher's Note: New mechanism for the top-bottom mass hierarchy...

    Office of Scientific and Technical Information (OSTI)

    New mechanism for the top-bottom mass hierarchy Phys. Rev. D 70, 055006 (2004) Citation Details In-Document Search Title: Publisher's Note: New mechanism for the top-bottom mass ...

  19. Viscosity and density of aqueous solutions of LiBr, LiCl, ZnBr[sub 2], CaCl[sub 2], and LiNO[sub 3]; 1: Single salt solutions

    SciTech Connect

    Wimby, J.M.; Berntsson, T.S. . Dept. of Heat and Power Technology)

    1994-01-01

    New experimental data for the viscosity and density of the binary systems lithium chloride + water, lithium bromide + water, calcium chloride + water, lithium nitrate + water, and zinc bromide + water are presented. Densities are presented in tabular form and as 10-parameter correlations, while kinematic and dynamic viscosities are presented in tabular form. Data are presented in the concentration range from intermediate dilution to close to room temperature crystallization concentration. The temperature ranges are 20--70 C for density and 25--90 C for viscosity. When available, literature data are compared with the new data, and some disagreement is found. New thermogravimetric curves are presented for the dehydration of CaCl[sub 2], ZnBr[sub 2], and LiBr in order to enable evaluation of drying as a composition determination technique.

  20. Assessment of LED Technology in Ornamental Post-Top Luminaires. Sacramento, CA

    SciTech Connect

    Tuenge, J. R.; Bryan, M. M.; Bisbee, D. A.

    2011-12-01

    GATEWAY program report on a demonstration of LED ornamental post-top luminaires in a residential part of Sacramento, CA.