National Library of Energy BETA

Sample records for testimony presentations radio

  1. Presentations & Testimony | U.S. DOE Office of Science (SC)

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

    Presentations & Testimony Deputy Director for Science Programs Deputy Director Home Mission & Functions Deputy Director Biography Organization Staff Presentations & Testimony Archives Federal Advisory Committees Committees of Visitors Contact Information Deputy Director for Science Programs U.S. Department of Energy SC-2/Forrestal Building 1000 Independence Ave., SW Washington, DC 20585 P: (202) 586-5430 F: (202) 586-4120 E: Email Us U.S. Department of Energy SC-2/Germantown Building

  2. Presentations & Testimony

    Office of Science (SC) Website

    is the principal federal funding agency of - the Nation's research programs in high-energy physics, nuclear physics, and fusion energy sciences. en 8EB6DAC2-034D-49A2-B1D4-D589...

  3. Testimony by

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

    Blog » Testimony & Speeches Testimony & Speeches Testimony & Speeches 2011 Statement of David Sandalow, Assistant Secretary of Energy for Policy and International Affairs, Before the Subcommittee on Energy and the Environment, Committee on Science, Space, and Technology, United States House of Representatives, December 7, 2011. Statement of David Sandalow, Assistant Secretary of Energy for Policy and International Affairs Before the Subcommittee on Investigations and Oversight,

  4. EERE Testimonials

    Broader source: Energy.gov [DOE]

    These video testimonials capture what a variety of CEOs and business leaders have to say about the difference the Office of Energy Efficiency and Renewable Energy (EERE) is making in the clean energy economy.

  5. Ernest Moniz Senate Testimony Power Point

    Broader source: Energy.gov [DOE]

    This is the slide presentation used by Secretary Ernest Moniz during his testimony before the U.S. Senate Appropriations committee on spurring innovation through federal funding given April 29, 2014.

  6. Congressional Testimony | Department of Energy

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

    Center » Congressional Testimony Congressional Testimony Testimony to Congress by various members of OE. (Some of the documents in this section require Adobe Acrobat Reader. You can download a free copy of the Reader by visiting Adobe.) Testimony of Assistant Secretary Patricia Hoffman before the Senate Energy and Natural Resources Subcommittee on Energy regarding S.3018, the Securing Energy Infrastructure Act - July 12, 2016 Testimony of Assistant Secretary Patricia Hoffman before the House

  7. Testimony Before Senate Energy & Water Development Committee...

    Energy Savers [EERE]

    Reports Testimony Testimony Before Senate Energy & Water Development Committee Testimony Before Senate Energy & Water Development Committee March 21, 2012 Fiscal Year 2013 ...

  8. Written testimony SP

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

    1 Written Testimony of Stewart Prager Director, Princeton Plasma Physics Laboratory Professor of Astrophysical Sciences Princeton University Delivered to the Committee on Science, Space and Technology Subcommittee on Energy For the hearing on April 20, 2016 Thank you for the opportunity to appear before this subcommittee and to offer testimony on the Princeton Plasma Physics Laboratory, PPPL (its mission, current activities, and future opportunities) and the ITER project (its importance and

  9. Testimonials - Partnerships in Sustainable Transportation - The...

    Office of Environmental Management (EM)

    Testimonials - Partnerships in Sustainable Transportation - The Ohio State University Testimonials - Partnerships in Sustainable Transportation - The Ohio State University Addthis ...

  10. Congressional Testimony | Department of Energy

    Energy Savers [EERE]

    Hearing Before the House Science, Space and Technology Subcommittee on Energy on Fossil Energy programs and activities. Testimony of Christopher Smith, Assistant Secretary for ...

  11. Oak Ridge Centers for Manufacturing Technology ? testimonials

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

    testimonials The first testimonial for the successful Oak Ridge Centers for Manufacturing Technology came from Mitchell Burnett. Mitch was among the first hourly paid employees, an...

  12. Congressional Testimony | Department of Energy

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

    Budget & Performance » Federal Budget Process » Congressional Testimony Congressional Testimony Documents Available for Download February 11, 2016 Written Statement of Dr. Monica Regalbuto Assistant Secretary for Environmental Management United States Department of Energy Before the Subcommittee on Strategic Forces Committee on Armed Services United States House of Representatives (February 11 2016) Written Statement of Dr. Monica Regalbuto Assistant Secretary for Environmental Management

  13. Congressional Testimony | Department of Energy

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

    Congressional Testimony Congressional Testimony House Energy & Water Development February 29, 2012 Fiscal Year 2013 President's Budget Request By: Thomas P. D'Agostino, Undersecretary for Nuclear Security and Administrator National Nuclear Security Administration, U.S. Department of Energy Before: House Appropriations Committee Subcommittee on Energy and Water Development February 28, 2012 FY 2013 Budget Hearing By: Secretary Steven Chu, U.S. Department of Energy Before: Subcommittee on

  14. Congressional Testimony | Department of Energy

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

    About Us » News » Congressional Testimony Congressional Testimony October 6, 2011 Statement Before the Subcommittee on Children's Health and Environmental Responsibility, Committee on Environment and Public Works, United States Senate (10/6/2011) Statement Before the Subcommittee on Children's Health and Environmental Responsibility, Committee on Environment and Public Works, United States Senate By: David Geiser, Director, Office of Legacy Management, Department of Energy Subject: UMTRCA

  15. Congressional Testimony | Department of Energy

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

    Working with Us » Congressional Affairs » Congressional Testimony Congressional Testimony July 14, 2016 Hearing Before the House Natural Resources Subcommittee on Oversight and Investigations Hearing Before the House Natural Resources Subcommittee on Oversight and Investigations regarding Federal loan-guaranteed solar energy projects. Statement for the record of Mark A. McCall, Executive Director, Loan Programs Office, U.S. Department of Energy. July 12, 2016 Hearing Before the Senate Energy

  16. Partner Testimonials | Department of Energy

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

    Partner Testimonials Partner Testimonials Mike Krames, Chief Technology Officer at Soraa, Inc., discusses solid-state lighting and his partnership with the U.S. Department of Energy. The Office of Energy Efficiency and Renewable Energy (EERE) partners with industry and community leaders to bring clean energy technologies into the marketplace. By providing research support and sharing developed technologies with industry and community leaders in the renewable electricity generation, energy-saving

  17. Worker Testimonials | Department of Energy

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

    Testimonials Worker Testimonials Rick Hurrelbrink, Pipefitters Local 392, Fernald Former Worker "I'm glad I got tested because it gave me peace of mind that I had no serious health problems. Construction workers get exposed to so many different materials on job sites that you never know how you will be affected. I also was able to take care of a few minor things I wouldn't have known about." Edna Brackey, Portsmouth Gaseous Diffusion Plant Former Worker "This is a thank you

  18. Testimonials - Partnerships in Sustainable Transportation - The Ohio

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

    State University | Department of Energy Testimonials - Partnerships in Sustainable Transportation - The Ohio State University Testimonials - Partnerships in Sustainable Transportation - The Ohio State University Addthis Text Version The words "Office of Energy Efficiency & Renewable Energy, U.S. Department of Energy, EERE Partnership Testimonials" appears on the screen, followed by footage of Professor Giorgio Rizzoni speaking. The words "Giorgio Rizzoni, Director, Center

  19. FE Speeches and Testimony | Department of Energy

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

    28, 2012 Testimony of Christopher Smith before the House Committee on Energy and Commerce Statement of Christopher Smith, Deputy Assistant Secretary for Oil and Natural Gas,...

  20. Testimony before the House Appropriations Committee, Subcommittee...

    National Nuclear Security Administration (NNSA)

    Testimony before the House Appropriations Committee, Subcommittee on Energy and Water ... for Atomic Energy (Rosatom), and Rostekhnadzor, the Russian nuclear regulatory agency. ...

  1. Testimony Before the House Subcommittee on Oversight and Investigation...

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

    - Committee on Energy and Commerce Testimony Before the House Subcommittee on Oversight and Investigations - Committee on Energy and Commerce Testimony of Christopher Johns, ...

  2. Testimony

    Office of Energy Efficiency and Renewable Energy (EERE)

    United States Department of Energy: Office of the Chief Financial Officer. LPG Public Meeting on Friday, June 15, 2007.

  3. Testimony Before the House Committee on Science, Space, and Technology

    Broader source: Energy.gov [DOE]

    Secretary Moniz's full written testimony prepared for the House Committee on Science, Space, and Technology.

  4. Testimonials - Partnerships in LED Lighting - Philips Lumileds

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

    Lighting, LLC | Department of Energy LED Lighting - Philips Lumileds Lighting, LLC Testimonials - Partnerships in LED Lighting - Philips Lumileds Lighting, LLC Addthis Text Version The words "Office of Energy Efficiency & Renewable Energy, U.S. Department of Energy, EERE Partnership Testimonials," appear on the screen, followed by "Sunil Thomas, General Manager of San Jose Manufacturing Site, Philips Lumileds Lighting, LLC" and footage of a man sitting in a showcase

  5. Testimonials - Partnerships in Solar Technologies - SRI International |

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

    Department of Energy Solar Technologies - SRI International Testimonials - Partnerships in Solar Technologies - SRI International Addthis Text Version The words "Office of Energy Efficiency & Renewable Energy, U.S. Department of Energy, EERE Partnership Testimonials," appear on the screen, followed by "Curtis Carlson, Vice Chairman for Innovation, SRI International" and footage of a man. Curtis Carlson: Innovation is everything today. We're in the, I call it, the

  6. Wind Vision Testimonials | Department of Energy

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

    Testimonials Wind Vision Testimonials Addthis Description Five years after its initial release, wind industry leaders reflect on the impacts of the 2008 20% Wind Energy by 2030 study. Video from the Wind Energy Foundation. Text Version The video opens with the "Wind Energy Foundation" logo. The first slide shows the first report published and its cover: 20% Wind Energy by 2030: Increasing Wind Energy's Contribution to U.S. Electricity Supply July 2008 Five years later... The Impacts of

  7. WP-07 IP Direct Testimony (wp07/initial)

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

    total of twenty (20) direct testimony documents that have been packaged into three (3) books (see below). This page provides direct links to the Direct Testimony books on the Rate...

  8. Testimony of Mark Whitney Principal Deputy Assistant Secretary...

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

    Principal Deputy Assistant Secretary for Environmental Management Before the Subcommittee ... Testimony of Mark Whitney Principal Deputy Assistant Secretary for Environmental ...

  9. Presentations

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

    NERSC View of the Greenbook June 25, 2004 | Author(s): Bill Saphir | Download File: Saphir.ppt | ppt | 644 KB High Energy Physics Greenbook Presentation June 25, 2004 | Author(s): Rob Ryne | Download File: ryne.ppt | ppt | 481 KB (Accelerator Physics, Astrophysics, Theory) Nuclear Physics Greenbook Presentation June 25, 2004 | Author(s): Doug Olson | Download File: olson-np.ppt | ppt | 1.3 MB (Astrophysics, Nuclear Theory) ASCR Greenbook Presentation June 25, 2004 | Author(s): Phil Collela |

  10. Presentations

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

    | Adobe Acrobat PDF file A description of the Cray XE6 architecture. Presented by John Shalf, NERSC. Compiling-Cunningham.pdf | Adobe Acrobat PDF file An introduction to...

  11. Presentations

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

    Mixed Language Programming, including Library Usage across Language Boundaries June 24, 2004 ... High Energy Physics Greenbook Presentation June 25, 2004 | Author(s): Rob Ryne | ...

  12. Presentations

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

    of performance between the SP and UCLA's own Appleseed cluster of G4 Macintosh computers will also be presented. Kernel and Application Code Performance for a Spectral...

  13. Presentations

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

    Presentations Vadim Sokolov, Joshua Auld, Michael Hope, A flexible framework for developing integrated models of transportation systems using an agent-based approach, Procedia Computer Science, Volume 10, 2012, Pages 854-859 (link) TRACC RESEARCH Computational Fluid Dynamics Computational Structural Mechanics Transportation Systems Modeling Polaris Paris Home Presentations

  14. Presentations

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

    ASCR Greenbook Presentation February 22, 2001 | Author(s): Mike Minkoff | Download File: Minkoff.greenbook-oascr2001.ppt | ppt | 47 KB BER Greenbook Presentation February 22, 2001 | Author(s): Doug Rotman | Download File: OBERFeb22Rotman.ppt | ppt | 5.5 MB BES Greenbook Presentation February 22, 2001 | Author(s): Theresa Windus | Download File: Windus.besgreenbook.ppt | ppt | 1.3 MB Draft OFES Contributions February 23, 2001 | Author(s): B. I. Cohen; A. Friedman; D. A. Spong | Download File:

  15. Presentations

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

    ... Fortran-77 and Fortran-90: Porting Between PVP and MPP April 28, 1999 | Author(s): Majdi Baddourah | Presentation not available. This lecture will be an overview of where Fortran ...

  16. Presentations

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

    ... April 8, 1998 | Author(s): Jonathan Carter | Download File: jcarter.pdf | pdf | 339 KB In this presentation we show the various stages of converting a program from PVP to MPP. ...

  17. Presentations

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

    Craig Tull: Present and Future Computing Requirements for Daya Bay November 27, 2012 | Author(s): Craig Tull (LBNL) | Download File: CraigTull20121127Dayabay.pdf | pdf | 11 MB...

  18. Presentations

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

    Susan Gregurick (DOE) Download File: September-2012-BER-NERSC-Overview.pdf | pdf | 2.2 MB Harvey Wasserman Download File: NERSC-IntroHarvey.pdf | pdf | 1.9 MB Present and Future...

  19. Presentations

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

    Presentations Presentations Sort by: Default | Name | Date (low-high) | Date (high-low) | Source | Category ASCR Requirements Gathering March 19, 2013 | Author(s): David Goodwin, DOE ASCR | Download File: ASCR-Requirements-Gathering.pdf | pdf | 207 KB FES Program Summary & Status March 19, 2013 | Author(s): John Mandrekas, DOE FES | Download File: FES-NERSCMandrekas032013Final.pdf | pdf | 13 MB FES Review Overview and Goals March 19, 2013 | Author(s): Richard A. Gerber | Download File:

  20. Presentations

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

    Presentations Presentations Sort by: Default | Name | Date (low-high) | Date (high-low) | Source | Category Barbara Helland: NERSC-HEP Requirements Review November 27, 2012 | Author(s): Barbara Helland | Download File: Helland.pdf | pdf | 5.5 MB NERSC-HEP Requirements Review James Siegrist: Perspectives from High Energy Physics November 27, 2012 | Author(s): James Siegrist | Download File: Siegrist-HEP-Overview.pdf | pdf | 3.7 MB Perspectives from High Energy Physics Sudip Dosanjh: NERSC Role in

  1. Presentations

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

    Presentations Presentations Sort by: Default | Name | Date (low-high) | Date (high-low) | Source | Category IBM Compiler Optimization Options June 4, 2002 | Author(s): M. Stewart | Download File: optarg.ppt | ppt | 53 KB All of the IBM supplied compilers produce unoptimized code by default. Specific optimization command line options must be supplied to the compilers in order for them to produce optimized code. In this talk, several of the more useful optimization options for the IBM Fortran, C,

  2. Presentations

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

    Presentations Presentations Sort by: Default | Name | Date (low-high) | Date (high-low) | Source | Category NERSC Updates Status; current activities and projects Roadmap, future projects, and impact of potential continuing resolution September 17, 2007 | Author(s): Bill Kramer | Download File: Kramer-NERSCIntro-v2.ppt | ppt | 23 MB Download File: Kramer-NERSCIntro-v2.pdf | pdf | 13 MB HPSS Update September 17, 2007 | Author(s): Jason Hick | Download File: Hick-NUGHPSSUpdate.ppt | ppt | 1.2 MB

  3. Presentations

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

    HENP Greenbook Presentation February 23, 2001 | Author(s): David Dean | Download File: Dean.nerschenp.ppt | ppt | 7.5 MB FES Greenbook Presentation February 23, 2001 | Author(s): Bas Braams | [File unavailable for download] Revisit Greenbook goals; synthesis and overall Greenbook Framework; work assignments February 23, 2001 | Author(s): Doug Rotman | Download File: Rotman.NERSCGreenbook.doc | doc | 22 KB Draft OFES Contributions February 23, 2001 | Author(s): B. I. Cohen; A. Friedman; D. A.

  4. Presentations

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

    Presentations Presentations Sort by: Default | Name | Date (low-high) | Date (high-low) | Source | Category Requirements Reviews Overview Author(s): David Goodwin, ASCR | Meeting Goals and Process Author(s): Richard Gerber | Download File: Gerber-Overview.pdf | pdf | 1.4 MB Computing in Basic Energy Sciences Author(s): James Davenport, BES | Download File: DavenportNERSC-BES-10-8-2013.pdf | pdf | 12 MB NERSC Ten-Year Strategy Author(s): Sudip Dosanjh, NERSC | Download File: SudipDosanjh.pdf |

  5. Presentations

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

    Presentations Presentations Sort by: Default | Name | Date (low-high) | Date (high-low) | Source | Category Perspectives from Washington February 22, 2001 | Author(s): Walt Polansky | Download File: Polansky.NUGMeeting2-01.ppt | ppt | 750 KB Status reports: IBM SP Phase 2 plans, NERSC-4 plans, NERSC-2 decommissioning February 22, 2001 | Author(s): Bill Kramer | Download File: Kramer.Status.Plans.Feb2001.ppt | ppt | 6.8 MB Goals for the next Greenbook February 22, 2001 | Author(s): Doug Rotman |

  6. Presentations

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

    Presentations Presentations Sort by: Default | Name | Date (low-high) | Date (high-low) | Source | Category DOE Update June 12, 2006 | Author(s): Barbara Helland | Download File: Helland-DOE.ppt | ppt | 788 KB NERSC Status and Five Year Plan 2006-2010 June 12, 2006 | Author(s): Bill Kramer | Download File: KramerStatusUpdate.ppt | ppt | 2.6 MB NERSC Metrics June 12, 2006 | Author(s): Jonathan Carter | Download File: CarterMetrics.ppt | ppt | 839 KB NERSC Global Filesystem Future Directions

  7. Presentations

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

    Presentations Presentations Sort by: Default | Name | Date (low-high) | Date (high-low) | Source | Category NERSC Accomplishments and Plans October 7, 2009 | Author(s): Kathy Yelick | Download File: YelickK.pdf | pdf | 34 MB Hopper, the new NERSC-6 System October 7, 2009 | Author(s): Jonathan Carter | Download File: CarterJ.pdf | pdf | 2.5 MB 2009 User Survey Results October 7, 2009 | Author(s): Francesca Verdier | Download File: VerdierF.pdf | pdf | 2.9 MB Requirements Gathering & BER

  8. PRESENT:

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

    PUBLIC MEETING + + + + + FRIDAY NOVEMBER 14, 1997 + + + + + WASHINGTON, D.C. The Committee met in the Clark Room of the Capital Holiday Inn, 550 C Street, S.W., at 10:30 a.m., G. Campbell Watkins, Chair, presiding. PRESENT: G. CAMPBELL WATKINS, Chair DANIEL A. RELLES, Vice Chair DAVID R. BELLHOUSE R. SAMPRIT CHATTERJEE BRENDA G. COX CAROL A. GOTWAY CRAWFORD PHILIP HANSEN CALVIN KENT GRETA M. LJUNG ROY W. WHITMORE INVITED GUESTS: SEYMOUR SUDMAN RICHARD TABORS EIA STAFF PRESENT: JAY HAKES, EIA

  9. Presentations

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

    ACTS Components (such as such as ScaLAPACK, TAU, SuperLU, and PETSc) and Case Studies of Their Use June 24, 2004 | Author(s): Osni Marques | URL: http://ipvideo.lbl.gov:8080/ramgen/Marques.rm Download File: NUG.ppt | ppt | 5.6 MB ASCR Greenbook Presentation June 25, 2004 | Author(s): Phil Collela | Download File: colella.ppt | ppt | 20 KB Applied Mathematics, Computer Science Basic Energy Sciences Greenbook Presentation June 25, 2004 | Author(s): Robert Harrison | Download File:

  10. Presentations

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

    Susan Gregurick (DOE) Download File: September-2012-BER-NERSC-Overview.pdf | pdf | 2.2 MB Harvey Wasserman Download File: NERSC-IntroHarvey.pdf | pdf | 1.9 MB Present and Future Computing Requirements Author(s): Ruby Leung | Download File: Leung.pdf | pdf | 730 KB BER/NERSC Requirements Gathering Workshop September 11, 2012 | Author(s): Yukiko Sekine, DOE ASCR | Download File: YS-BER-NERSCWorkshopPresen2.pdf | pdf | 592 KB Case Study: Climate Change Simula2ons with the Community Earth System

  11. Presentations

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

    Present and Future Computing Requirements for Computational Prediction of Protein-DNA Binding September 12, 2012 | Author(s): Mohammed AlQuraishi | Download File: AlQuraishi.pdf | pdf | 1 MB KBASE: Data and Modeling for Predictive Biology September 12, 2012 | Author(s): Tom Brettin and Shane Canon | Download File: KBaseBrettin.pdf | pdf | 5.9 MB NERSC Role in Biological and Environmental Research September 12, 2012 | Author(s): Kathy Yelick | Download File: NERSC-BER-Yelick.ppt | ppt | 35 MB

  12. Presentations

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

    NUG 1996 NUG 1995 NUG 1994 ERSUG: July 11 - 12, 1994 (Rockville, Maryland) Presentations Agenda Minutes ERSUG/EXERSUG: Jan 12, 1994 (UCLA) NUGEX Elections Charter Help Staff Blogs Request Repository Mailing List Need Help? Out-of-hours Status and Password help Call operations: 1-800-66-NERSC, option 1 or 510-486-6821 Account Support https://nim.nersc.gov accounts@nersc.gov 1-800-66-NERSC, option 2 or 510-486-8612 Consulting and questions http://help.nersc.gov consult@nersc.gov 1-800-66-NERSC,

  13. Presentations

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

    Presentations Agenda Minutes NUG 1997 NUG 1996 NUG 1995 NUG 1994 NUGEX Elections Charter Help Staff Blogs Request Repository Mailing List Need Help? Out-of-hours Status and Password help Call operations: 1-800-66-NERSC, option 1 or 510-486-6821 Account Support https://nim.nersc.gov accounts@nersc.gov 1-800-66-NERSC, option 2 or 510-486-8612 Consulting and questions http://help.nersc.gov consult@nersc.gov 1-800-66-NERSC, option 3 or 510-486-8611 Home » For Users » NERSC Users Group » Annual

  14. Presentations

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

    A Briefing on the NERSC III System April 27, 1999 | Author(s): Adrian Wong | [Presentation not available]. A technical description of the newly announced NERSC III system: what it will consist of, the phases of its delivery, and a discussion of how it will be used and managed. Both hardware and software will be discussed. An Introduction to PetSC April 27, 1999 | Author(s): Satish Balay, William Gropp, Lois Curfman McInnes, Barry Smith | Download File: petsc.ppt | ppt | 572 KB The development of

  15. Presentations

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

    Comparing Cray Tasking and OpenMP June 7, 2000 | Author(s): Thomas M. DeBoni | Download File: OpenMPvsCrayDirectives.ppt | ppt | 56 KB This talk will provide an overview of the OpenMP standard, focusing on the scope of the specification. This will be followed by a comparison of Cray tasking directives with their OpenMP counterparts. Several examples will be presented that illustrate the capabilities (and limitations) of OpenMP. The talk will conclude with a brief discussion of mixing OpenMP with

  16. Presentations

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

    November 12, 2001 Presentations Agenda NUG 2000 NUG 1999 NUG 1998 NUG 1997 NUG 1996 NUG 1995 NUG 1994 NUGEX Elections Charter Help Staff Blogs Request Repository Mailing List Need Help? Out-of-hours Status and Password help Call operations: 1-800-66-NERSC, option 1 or 510-486-6821 Account Support https://nim.nersc.gov accounts@nersc.gov 1-800-66-NERSC, option 2 or 510-486-8612 Consulting and questions http://help.nersc.gov consult@nersc.gov 1-800-66-NERSC, option 3 or 510-486-8611 Home » For

  17. Presentations

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

    NERSC "Visualization Greenbook": Future Visualization Needs of the DOE Computational Science Community Hosted at NERSC October 1, 2002 | Author(s): Bernd Hamann, E. Wes Bethel, Horst Simon, Juan Meza | Download File: VisGreenFindings-LBNL-51699.pdf | pdf | 2.8 MB This report presents the findings and recommendations that emerged from a one-day workshop held at Lawrence Berkeley National Laboratory (LBNL) on June 5, 2002, in conjunction with the NERSC User Group (NUG) Meeting. IBM

  18. Presentations

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

    November 18, 2002 Presentations Agenda NUG 2001 NUG 2000 NUG 1999 NUG 1998 NUG 1997 NUG 1996 NUG 1995 NUG 1994 NUGEX Elections Charter Help Staff Blogs Request Repository Mailing List Need Help? Out-of-hours Status and Password help Call operations: 1-800-66-NERSC, option 1 or 510-486-6821 Account Support https://nim.nersc.gov accounts@nersc.gov 1-800-66-NERSC, option 2 or 510-486-8612 Consulting and questions http://help.nersc.gov consult@nersc.gov 1-800-66-NERSC, option 3 or 510-486-8611 Home

  19. Presentations

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

    NUG 2012 Training Presentations NUG 2010 NUG 2009 NUG 2008 NUG 2007 NUG 2006 NUG 2005 NUG 2004 NUG 2003 NUG 2002 NUG 2001 NUG 2000 NUG 1999 NUG 1998 NUG 1997 NUG 1996 NUG 1995 NUG 1994 NUGEX Elections Charter Help Staff Blogs Request Repository Mailing List Need Help? Out-of-hours Status and Password help Call operations: 1-800-66-NERSC, option 1 or 510-486-6821 Account Support https://nim.nersc.gov accounts@nersc.gov 1-800-66-NERSC, option 2 or 510-486-8612 Consulting and questions

  20. Congressional Testimony | National Nuclear Security Administration | (NNSA)

    National Nuclear Security Administration (NNSA)

    Home / Library Congressional Testimony NNSA officials frequently testify before Congressional committees and subcommittees on matters of nuclear and national security. NNSA officials frequently testify before Congressional committees and subcommittees on matters of nuclear and national security. April 10, 2014 Statement on FY15 Budget Request Before Senate Committee on Armed Services Subcommittee on Strategic Forces Chairman Udall, Ranking Member Sessions, and Members of the Subcommittee, I come

  1. Presentations & Testimony | U.S. DOE Office of Science (SC)

    Office of Science (SC) Website

    Appropriations Subcommittee on Energy & Water Development .pdf file (60KB) Acting ... before the House Committee on Appropriations Subcommittee on Energy & Water Development. ...

  2. Testimony Before Senate Energy & Water Development Committee | Department

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

    of Energy Reports » Testimony » Testimony Before Senate Energy & Water Development Committee Testimony Before Senate Energy & Water Development Committee March 21, 2012 Fiscal Year 2013 President's Budget Request By: Thomas P. D'Agostino, Undersecretary for Nuclear Security and Administrator National Nuclear Security Administration, U.S. Department of Energy Before: Senate Appropriations Committee Subcommittee on Energy and Water Development March 14, 2012 FY 2013 Budget Hearing

  3. Testimony Before the House Energy & Water Development Committee |

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

    Department of Energy Testimony » Testimony Before the House Energy & Water Development Committee Testimony Before the House Energy & Water Development Committee February 29, 2012 Fiscal Year 2013 President's Budget Request By: Thomas P. D'Agostino, Undersecretary for Nuclear Security and Administrator National Nuclear Security Administration, U.S. Department of Energy Before: House Appropriations Committee Subcommittee on Energy and Water Development February 28, 2012 FY 2013 Budget

  4. Testimony Before the House Subcommittee on Oversight and Investigations -

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

    Committee on Energy and Commerce | Department of Energy Testimony Before the House Subcommittee on Oversight and Investigations - Committee on Energy and Commerce Testimony Before the House Subcommittee on Oversight and Investigations - Committee on Energy and Commerce Testimony of Christopher Johns, Director of Budget Before the House Subcommittee on Oversight and Investigations - Committee on Energy and Commerce 4-18-12_Christopher_Johns_FT.pdf (75.36 KB) More Documents & Publications

  5. Secretary Chu Testimony to Senate Armed Services Committee | Department of

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

    Energy Testimony to Senate Armed Services Committee Secretary Chu Testimony to Senate Armed Services Committee June 17, 2010 - 12:00am Addthis Washington, DC -- Secretary Steven Chu testified today before the Senate Armed Services Committee on the New START Treaty. His prepared testimony is below: Chairman Levin, Ranking Member McCain, and Members of the Committee, thank you for the opportunity to testify on the Treaty between the United States of America and the Russian Federation on

  6. Testimony Before the House Appropriations Subcommittee on Energy and Water

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

    Development | Department of Energy House Appropriations Subcommittee on Energy and Water Development Testimony Before the House Appropriations Subcommittee on Energy and Water Development Testimony Before the House Appropriations Subcommittee on Energy and Water Development By: Ingrid Kolb, Director, Office of Management Subject: Energy Department Project Oversight 3-5-09_Final_Testimony_(Kolb).pdf (25.32 KB) More Documents & Publications Before the Subcommittee on National Parks -

  7. Testimony Before the Senate Energy and Natural Resources Committee |

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

    Department of Energy Senate Energy and Natural Resources Committee Testimony Before the Senate Energy and Natural Resources Committee Testimony Before the Senate Energy and Natural Resources Committee By: Patricia Hoffman, Acting Assistant Secretary, Office of Electricity Delivery and Energy Reliability Subject: Revamping the Energy Grid with New Technologies Final_Testimony_for_OE_-_Hoffman.pdf (144.17 KB) More Documents & Publications Statement of Patricia Hoffman Acting Assistant

  8. Testimony by the Inspector General | Department of Energy

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

    Testimony by the Inspector General Testimony by the Inspector General Testimony by the Inspector General August 1, 2013 Gregory H. Friedman: Provided for The Committee on Oversight and Government Reform U.S. House of Representatives Gregory H. Friedman: Provided for The Committee on Oversight and Government Reform U.S. House of Representatives July 24, 2013 Gregory H. Friedman: Provided for the Subcommittee on Oversight and Investigations Committee on Energy and Commerce U.S. House of

  9. Testimony Before the House Energy and Commerce Subcommittee on...

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

    Energy and Commerce Subcommittee on Energy and Environment Testimony Before the House Energy and Commerce Subcommittee on Energy and Environment Before the House Energy and...

  10. Ernest Moniz Senate Testimony Power Point | Department of Energy

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

    innovation through federal funding given April 29, 2014. PDF icon Powerpoint from S1 Testimony to Senate Appropriations Committee on Driving Innovation through Federal...

  11. Ernest Moniz Senate Testimony Power Point | Department of Energy

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

    on spurring innovation through federal funding given April 29, 2014. Powerpoint from S1 Testimony to Senate Appropriations Committee on Driving Innovation through Federal...

  12. Testimony of Mark Whitney Acting Assistant Secretary for Environmental...

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

    Acting Assistant Secretary for Environmental Management U.S. Department of Energy Before ... Testimony of Mark Whitney Acting Assistant Secretary for Environmental Management U.S. ...

  13. Testimonials - Partnerships in R&D - General Electric | Department...

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

    EERE Partnership Testimonials," appear on the screen, followed by "Monte Atwell, General Manager, General Electric" and footage of a man wearing protective glasses in a laboratory. ...

  14. Testimonials - Partnerships in R&D - Whirlpool Corporation |...

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

    Energy, U.S. Department of Energy, EERE Partnership Testimonials," appear on the screen, followed by "Jeff Fettig, Chairman & CEO, Whirlpool Corporation" and footage of a man. ...

  15. Testimonials - Partnerships in R&D - Air Products and Chemicals...

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

    EERE Partnership Testimonials," appear on the screen, followed by "John Cirucci, Senior Engineering Associate, Air Products and Chemicals Incorporated" and footage of a man. ...

  16. Testimonials - Partnerships in R&D - Capstone Turbine Corporation...

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

    Capstone Turbine Corporation Testimonials - Partnerships in R&D - Capstone Turbine Corporation Addthis Text Version The words Office of Energy Efficiency and Renewable Energy U.S. ...

  17. Testimonials - Partnerships in Fuel Cells - GE Global Research...

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

    Fuel Cells - GE Global Research Testimonials - Partnerships in Fuel Cells - GE Global Research Addthis Text Version The words "Office of Energy Efficiency & Renewable Energy, U.S. ...

  18. Testimonials - Partnerships in Solid-State Lighting - Soraa,...

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

    U.S. Department of Energy, EERE Partnership Testimonials," appear on the screen, followed by "Mike Krames, Chief Technology Officer, Soraa, Inc." and footage of a man in a lab. ...

  19. Testimony of Mark Whitney Principal Deputy Assistant Secretary for

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

    Environmental Management Before the Subcommittee on Environment and the Economy House Energy and Commerce Committee Disposal of Low-Level Radioactive Waste and Greater-Than-Class C Waste | Department of Energy Testimony of Mark Whitney Principal Deputy Assistant Secretary for Environmental Management Before the Subcommittee on Environment and the Economy House Energy and Commerce Committee Disposal of Low-Level Radioactive Waste and Greater-Than-Class C Waste Testimony of Mark Whitney

  20. Testimony of Patricia A. Hoffman, Assistant Secretary for Office of

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

    Electricity Delivery and Energy Reliability, before the House Homeland Security Committee May 17, 2016 | Department of Energy of Patricia A. Hoffman, Assistant Secretary for Office of Electricity Delivery and Energy Reliability, before the House Homeland Security Committee May 17, 2016 Testimony of Patricia A. Hoffman, Assistant Secretary for Office of Electricity Delivery and Energy Reliability, before the House Homeland Security Committee May 17, 2016 Testimony of Patricia A. Hoffman,

  1. Secretary Chu's Written Testimony before the House Committee on Oversight

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

    and Government Reform | Department of Energy Written Testimony before the House Committee on Oversight and Government Reform Secretary Chu's Written Testimony before the House Committee on Oversight and Government Reform March 19, 2012 - 4:44pm Addthis Chairman Issa, Ranking Member Cummings, and Members of the Committee, thank you for the opportunity to discuss the Department of Energy's work through the American Recovery and Reinvestment Act to strengthen the U.S. economy and promote a

  2. Secretary Ernest J. Moniz's Written Testimony on Climate Change before

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

    the House Committee on Energy and Commerce Subcommittee on Energy and Power | Department of Energy Ernest J. Moniz's Written Testimony on Climate Change before the House Committee on Energy and Commerce Subcommittee on Energy and Power Secretary Ernest J. Moniz's Written Testimony on Climate Change before the House Committee on Energy and Commerce Subcommittee on Energy and Power September 18, 2013 - 12:46pm Addthis Dr. Ernest Moniz Dr. Ernest Moniz Secretary of Energy Chairmen Upton and

  3. Testimonials - Partnerships in Combined Heat and Power Technologies -

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

    Cummins Inc. | Department of Energy Combined Heat and Power Technologies - Cummins Inc. Testimonials - Partnerships in Combined Heat and Power Technologies - Cummins Inc. Addthis Text Version The words "Office of Energy Efficiency & Renewable Energy, U.S. Department of Energy, EERE Partnership Testimonials," appear on the screen, followed by "Kevin Keene, Project Director, Cummins" and footage of a man. Kevin Keene: Working with the Department of Energy has been

  4. Testimonials - Partnerships in Fuel Cells - GE Global Research |

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

    Department of Energy Fuel Cells - GE Global Research Testimonials - Partnerships in Fuel Cells - GE Global Research Addthis Text Version The words "Office of Energy Efficiency & Renewable Energy, U.S. Department of Energy, EERE Partnership Testimonials," appear on the screen, followed by "Mark Little, Senior Vice President, GE Global Research" and footage of a man in a suit. Mark Little: Energy, manufacturing, innovation, and competitiveness are the core to the

  5. Principal Deputy Chief William A. Eckroade's Written Testimony Before the

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

    Subcommittee on Financial and Contracting Oversight Committee on Homeland Security and Governmental Affairs (March 11, 2014) | Department of Energy Principal Deputy Chief William A. Eckroade's Written Testimony Before the Subcommittee on Financial and Contracting Oversight Committee on Homeland Security and Governmental Affairs (March 11, 2014) Principal Deputy Chief William A. Eckroade's Written Testimony Before the Subcommittee on Financial and Contracting Oversight Committee on Homeland

  6. Testimony of Mark Whitney Acting Assistant Secretary for Environmental

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

    Management U.S. Department of Energy Before the Subcommittee on Oversight and Investigations Energy and Commerce Committee U.S. House of Representatives WIPP Public Hearing June 2016 | Department of Energy Testimony of Mark Whitney Acting Assistant Secretary for Environmental Management U.S. Department of Energy Before the Subcommittee on Oversight and Investigations Energy and Commerce Committee U.S. House of Representatives WIPP Public Hearing June 2016 Testimony of Mark Whitney Acting

  7. Secretary Moniz's Testimony Before the Senate Foreign affairs Committee on the Iran Deal-- As Prepared

    Broader source: Energy.gov [DOE]

    Secretary Ernest Moniz's testimony on the Iran Deal before the Senate Foreign Affairs Committee as prepared on July 23, 2015.

  8. Testimony Before the House Committee on Energy and Commerce Subcommittee on Energy and Power

    Broader source: Energy.gov [DOE]

    Secretary Moniz's full written testimony prepared for the House Committee on Energy and Commerce, Subcommittee on Energy and Power.

  9. Testimonials - Partnerships in Solid-State Lighting - Cree, Inc. |

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

    Department of Energy Cree, Inc. Testimonials - Partnerships in Solid-State Lighting - Cree, Inc. Addthis Text Version The words "Office of Energy Efficiency & Renewable Energy, U.S. Department of Energy, EERE Partnership Testimonials," appear on the screen, followed by "John Edmond, Director of Advanced Opto Electronics Technology, Cree, Inc." and footage of a man in a showcase room. John Edmond: We should care as a country about creating jobs, and solid-state

  10. Testimonials - Partnerships in Solid-State Lighting - Soraa, Inc. |

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

    Department of Energy Soraa, Inc. Testimonials - Partnerships in Solid-State Lighting - Soraa, Inc. Addthis Text Version The words "Office of Energy Efficiency & Renewable Energy, U.S. Department of Energy, EERE Partnership Testimonials," appear on the screen, followed by "Mike Krames, Chief Technology Officer, Soraa, Inc." and footage of a man in a lab. Mike Krames: The Department of Energy has done a great job in supporting solid-state lighting in the United States.

  11. Testimony Before the Senate Armed Services Committee, New START Treaty

    National Nuclear Security Administration (NNSA)

    Hearing | National Nuclear Security Administration | (NNSA) Testimony Before the Senate Armed Services Committee, New START Treaty Hearing July 20, 2010 Chairman Levin, Ranking Member McCain, and Members of the Committee, thank you for the opportunity to testify on the Treaty between the United States of America and the Russian Federation on Measures for the Further Reduction and Limitation of Strategic Offensive Arms, known as "New START." Last month, Secretary of Energy Chu

  12. Testimony before the Senate Committee on Energy & Natural Resources |

    National Nuclear Security Administration (NNSA)

    National Nuclear Security Administration | (NNSA) Testimony before the Senate Committee on Energy & Natural Resources February 01, 2011 Chairman Bingaman, Ranking Member Murkowski, and Committee Members, thank you for the opportunity to testify about the National Nuclear Security Administration's (NNSA's) support for accelerating development of a domestic commercial supply of Molybdenum-99 (Mo-99) without using highly enriched uranium (HEU). This effort is part of our larger global

  13. Testimony Of Patricia Hoffman, Assistant Secretary For Electricity Delivery

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

    and Energy Reliability, U.S. Department of Energy before the House Committee on Transportation and Infrastructure April 14, 2016 | Department of Energy Of Patricia Hoffman, Assistant Secretary For Electricity Delivery and Energy Reliability, U.S. Department of Energy before the House Committee on Transportation and Infrastructure April 14, 2016 Testimony Of Patricia Hoffman, Assistant Secretary For Electricity Delivery and Energy Reliability, U.S. Department of Energy before the House

  14. Testimony of Assistant Secretary Patricia Hoffman before the Senate Energy

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

    and Natural Resources Subcommittee on Energy regarding S.3018, the Securing Energy Infrastructure Act - July 12, 2016 | Department of Energy of Assistant Secretary Patricia Hoffman before the Senate Energy and Natural Resources Subcommittee on Energy regarding S.3018, the Securing Energy Infrastructure Act - July 12, 2016 Testimony of Assistant Secretary Patricia Hoffman before the Senate Energy and Natural Resources Subcommittee on Energy regarding S.3018, the Securing Energy Infrastructure

  15. 4-1-09_Final_Testimony_(Gruenspecht).pdf

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

    Testimony of Dr. Howard Gruenspecht Acting Administrator U.S. Energy Information Administration before the Subcommittee on General Farm Commodities and Risk Management Committee on Agriculture U. S. House of Representatives April 1, 2009 2 Mr. Chairman and Members of the Committee, I appreciate the opportunity to appear before you today to discuss developments in energy markets and their possible implications for agriculture. The Energy Information Administration (EIA) is the independent

  16. FY 2012 Budget Hearing Testimony before the Senate Armed Services

    National Nuclear Security Administration (NNSA)

    Committee, Subcommittee on Strategic Forces | National Nuclear Security Administration | (NNSA) FY 2012 Budget Hearing Testimony before the Senate Armed Services Committee, Subcommittee on Strategic Forces March 30, 2011 Thank you, Chairman Nelson and Ranking Member Sessions for the opportunity to address this committee today. While I look forward to discussing the investments the President has proposed in the future for our nation's nuclear security enterprise, I'd like to begin by thanking

  17. Working Paper Series - Views not necessarily those of EIA

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

    ... Press Releases Presentations Congressional Testimony Radio Spots Enter Search ... In terms of specific industries, petroleum refining and electricity generation stand ...

  18. Testimony before the House Appropriations Committee, Subcommittee...

    National Nuclear Security Administration (NNSA)

    10, 2010 Chief Operating Officer for Defense Nuclear Nonproliferation Steven K. Black Thank you, Mr. Chairman, and Committee Members, for the opportunity to present the Department ...

  19. EIA - Energy Conferences & Presentations.

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

    Presentations, Testimony, Events EIA Conference 2009 Tuesday, April 7 See each session for audio and video presentations! Plenary Session Welcome - Howard Gruenspecht Acting Administrator, Energy Information Administration Keynote Address; The Energy Problem - Dr. Steven Chu, Secretary of Energy The Economics of an Integrated World Oil Market - William D. Nordhaus, Sterling Professor of Economics, Yale University Energy in a Carbon-Constrained World - John W. Rowe, Chairman and Chief Executive

  20. International science and technology policies: Testimony before the Subcommittee on International Scientific Cooperation, Committee on Science, Space, and Technology, United States House of Representatives, April 4, 1990

    SciTech Connect (OSTI)

    Trivelpiece, A.W.

    1990-04-04

    This paper reflects testimony before a congressional committee on International Science and Technology Policies. (FSD)

  1. RADIO ALTIMETERS

    DOE Patents [OSTI]

    Bogle, R.W.

    1960-11-22

    A radio ranging device is described which utilizes a superregenerative oscillator having alternate sending and receiving phases with an intervening ranging interval between said phases, means for varying said ranging interval, means responsive to an on-range noise reduction condition for stopping said means for varying the ranging interval and indicating means coupled to the ranging interval varying means and calibrated in accordance with one-half the product of the ranging interval times the velocity of light whereby the range is indicated.

  2. My Testimony to the House Energy and Commerce Committee | Department of

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

    Energy Testimony to the House Energy and Commerce Committee My Testimony to the House Energy and Commerce Committee November 16, 2011 - 5:38pm Addthis Secretary Chu Secretary Chu Former Secretary of Energy Tomorrow morning, I'll be appearing before the House Energy and Commerce Committee to discuss the choice we face in competing for the clean energy jobs of tomorrow. I know that many of you share my strong feelings on this crucial issue, so I wanted to share my testimony with you. What

  3. Secretary Chu Highlights All-of-the-Above Energy Strategy in Senate Budget Testimony

    Broader source: Energy.gov [DOE]

    U.S. Secretary of Energy Steven Chu today detailed President Barack Obama's $27.2 billion Fiscal Year 2013 budget request in testimony before the Senate Energy and Natural Resources Committee.

  4. UPDATED: Oral Testimony of Energy Secretary Steven Chu at the Subcommittee

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

    on Energy and Water Development of the House Committee on Appropriations - As Prepared for Delivery | Department of Energy Oral Testimony of Energy Secretary Steven Chu at the Subcommittee on Energy and Water Development of the House Committee on Appropriations - As Prepared for Delivery UPDATED: Oral Testimony of Energy Secretary Steven Chu at the Subcommittee on Energy and Water Development of the House Committee on Appropriations - As Prepared for Delivery March 15, 2011 - 12:00am Addthis

  5. Testimony of Jonathan Silver, Executive Director Loan Programs Office, U.S.

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

    Department of Energy Before the Subcommittee on Oversight and Investigations Committee on Energy and Commerce U.S. House of Representatives | Department of Energy Testimony of Jonathan Silver, Executive Director Loan Programs Office, U.S. Department of Energy Before the Subcommittee on Oversight and Investigations Committee on Energy and Commerce U.S. House of Representatives Testimony of Jonathan Silver, Executive Director Loan Programs Office, U.S. Department of Energy Before the

  6. Oral Testimony of Energy Secretary Steven Chu at the House Energy and

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

    Commerce Committee - As Prepared for Delivery | Department of Energy Oral Testimony of Energy Secretary Steven Chu at the House Energy and Commerce Committee - As Prepared for Delivery Oral Testimony of Energy Secretary Steven Chu at the House Energy and Commerce Committee - As Prepared for Delivery March 16, 2011 - 12:00am Addthis Chairman Upton, Ranking Member Waxman, Mr. Barton, Mr. Dingell and Members of the Committee, thank you for the opportunity to discuss the President's Fiscal Year

  7. Secretary Chu's Testimony to the Senate Committee on Environment and Public

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

    Works - As Prepared for Delivery | Department of Energy the Senate Committee on Environment and Public Works - As Prepared for Delivery Secretary Chu's Testimony to the Senate Committee on Environment and Public Works - As Prepared for Delivery October 27, 2009 - 12:00am Addthis Washington, DC -- Secretary Steven Chu testified this morning before the Senate Committee on Environment and Public Works on S. 1733, the Clean Energy Jobs and American Power Act. His prepared testimony is below:

  8. Testimonials - Partnerships in R&D - Air Products and Chemicals

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

    Incorporated | Department of Energy R&D - Air Products and Chemicals Incorporated Testimonials - Partnerships in R&D - Air Products and Chemicals Incorporated Addthis Text Version The words "Office of Energy Efficiency & Renewable Energy, U.S. Department of Energy, EERE Partnership Testimonials," appear on the screen, followed by "John Cirucci, Senior Engineering Associate, Air Products and Chemicals Incorporated" and footage of a man. John Cirucci: Air

  9. Radio frequency detection assembly and method for detecting radio frequencies

    DOE Patents [OSTI]

    Cown, Steven H.; Derr, Kurt Warren

    2010-03-16

    A radio frequency detection assembly is described and which includes a radio frequency detector which detects a radio frequency emission produced by a radio frequency emitter from a given location which is remote relative to the radio frequency detector; a location assembly electrically coupled with the radio frequency detector and which is operable to estimate the location of the radio frequency emitter from the radio frequency emission which has been received; and a radio frequency transmitter electrically coupled with the radio frequency detector and the location assembly, and which transmits a radio frequency signal which reports the presence of the radio frequency emitter.

  10. RADIO FREQUENCY ATTENUATOR

    DOE Patents [OSTI]

    Giordano, S.

    1963-11-12

    A high peak power level r-f attenuator that is readily and easily insertable along a coaxial cable having an inner conductor and an outer annular conductor without breaking the ends thereof is presented. Spaced first and second flares in the outer conductor face each other with a slidable cylindrical outer conductor portion therebetween. Dielectric means, such as water, contact the cable between the flares to attenuate the radio-frequency energy received thereby. The cylindrical outer conductor portion is slidable to adjust the voltage standing wave ratio to a low level, and one of the flares is slidable to adjust the attenuation level. An integral dielectric container is also provided. (AFC)

  11. EIA Radio test

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

    September 10, 2012 Test of Energy News Radio Service This is a test audio file of the U.S. Energy Information Administration's energy news radio service to be launched on Tuesday, September 11 th with the release of EIA's monthly Short-Term Energy Outlook. EIA's radio service will provide free short broadcast stories on EIA energy data reports and analysis to radio stations nationwide. The stories will be recorded in MP3 format and can be downloaded from EIA's radio service webpage at

  12. The isotropic radio background revisited

    SciTech Connect (OSTI)

    Fornengo, Nicolao; Regis, Marco; Lineros, Roberto A.

    2014-04-01

    We present an extensive analysis on the determination of the isotropic radio background. We consider six different radio maps, ranging from 22 MHz to 2.3 GHz and covering a large fraction of the sky. The large scale emission is modeled as a linear combination of an isotropic component plus the Galactic synchrotron radiation and thermal bremsstrahlung. Point-like and extended sources are either masked or accounted for by means of a template. We find a robust estimate of the isotropic radio background, with limited scatter among different Galactic models. The level of the isotropic background lies significantly above the contribution obtained by integrating the number counts of observed extragalactic sources. Since the isotropic component dominates at high latitudes, thus making the profile of the total emission flat, a Galactic origin for such excess appears unlikely. We conclude that, unless a systematic offset is present in the maps, and provided that our current understanding of the Galactic synchrotron emission is reasonable, extragalactic sources well below the current experimental threshold seem to account for the majority of the brightness of the extragalactic radio sky.

  13. Stabilized radio frequency quadrupole

    DOE Patents [OSTI]

    Lancaster, H.D.; Fugitt, J.A.; Howard, D.R.

    1984-12-25

    Disclosed is a long-vane stabilized radio frequency resonator for accelerating charged particles and including means defining a radio frequency resonator cavity, a plurality of long vanes mounted in the defining means for dividing the cavity into sections, and means interconnecting opposing ones of the plurality of vanes for stabilizing the resonator. 5 figs.

  14. Stabilized radio frequency quadrupole

    DOE Patents [OSTI]

    Lancaster, Henry D.; Fugitt, Jock A.; Howard, Donald R.

    1984-01-01

    A long-vane stabilized radio frequency resonator for accelerating charged particles and including means defining a radio frequency resonator cavity, a plurality of long vanes mounted in the defining means for dividing the cavity into sections, and means interconnecting opposing ones of the plurality of vanes for stabilizing the resonator.

  15. State-Level Energy-Related Carbon Dioxide Emissions, 2000-2012

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

    ... Press Releases Presentations Congressional Testimony Radio Spots Enter Search ... There can also be significant variations in terms of CO2 emissions by sector (Tables 3 ...

  16. Coal Data Browser

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

    ... Press Releases Presentations Congressional Testimony Radio Spots Enter Search ... Do you have description of the search terms and what it means. After going through all ...

  17. Press Room - Testimony - U.S. Energy Information Administration...

    Annual Energy Outlook [U.S. Energy Information Administration (EIA)]

    Subject: EIA, Renewable, Forecasts Presented by: Howard Gruenspecht, Deputy Administrator Presented to: Committee on Environment and Public Works U.S. Senate Washington, ...

  18. Microsoft Word - FINAL Testimony - Gregory H Friedman - March 19 2009.doc

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

    Statement of Gregory H. Friedman Inspector General U.S. Department of Energy Before the Subcommittee on Investigations and Oversight Committee on Science and Technology U.S. House of Representatives FOR RELEASE ON DELIVERY 10:00 AM March 19, 2009 1 Mr. Chairman and Members of the Subcommittee: I appreciate the opportunity to testify today on accountability and transparency issues related to the American Recovery and Reinvestment Act of 2009 (Recovery Act). My testimony focuses on the efforts of

  19. TESTIMONY OF WILLIAM S. MAHARAY DEPUTY INSPECTOR GENERAL FOR AUDIT SERVICES

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

    TESTIMONY OF WILLIAM S. MAHARAY DEPUTY INSPECTOR GENERAL FOR AUDIT SERVICES U.S. DEPARTMENT OF ENERGY WASHINGTON D.C. BEFORE THE SUBCOMMITTEE ON GOVERNMENT MANAGEMENT, ORGANIZATION AND PROCUREMENT COMMITTEE ON OVERSIGHT AND GOVERNMENT REFORM U.S. HOUSE OF REPRESENTATIVES MARCH 20,2007 Mr. Chairman and members of the Subcommittee, I am pleased to be here at your request to testify on issues associated with the FY 2005 and 2006 Audits of the Department of Energy's Financial Statements. Over the

  20. Tracking the CME-driven shock wave on 2012 March 5 and radio triangulation of associated radio emission

    SciTech Connect (OSTI)

    Magdaleni?, J.; Marqu, C.; Mierla, M.; Zhukov, A. N.; Rodriguez, L.; Krupar, V.; Maksimovi?, M.; Cecconi, B.

    2014-08-20

    We present a multiwavelength study of the 2012 March 5 solar eruptive event, with an emphasis on the radio triangulation of the associated radio bursts. The main points of the study are reconstruction of the propagation of shock waves driven by coronal mass ejections (CMEs) using radio observations and finding the relative positions of the CME, the CME-driven shock wave, and its radio signatures. For the first time, radio triangulation is applied to different types of radio bursts in the same event and performed in a detailed way using goniopolarimetric observations from STEREO/Waves and WIND/Waves spacecraft. The event on 2012 March 5 was associated with a X1.1 flare from the NOAA AR 1429 situated near the northeast limb, accompanied by a full halo CME and a radio event comprising long-lasting interplanetary type II radio bursts. The results of the three-dimensional reconstruction of the CME (using SOHO/LASCO, STEREO COR, and HI observations), and modeling with the ENLIL cone model suggest that the CME-driven shock wave arrived at 1 AU at about 12:00 UT on March 7 (as observed by SOHO/CELIAS). The results of radio triangulation show that the source of the type II radio burst was situated on the southern flank of the CME. We suggest that the interaction of the shock wave and a nearby coronal streamer resulted in the interplanetary type II radio emission.

  1. Deputy Assistant Secretary Matt Moury's Written Testimony Before the Subcommittee on Financial and Contracting Oversight Committee on Homeland Security and Government Affairs (March 11, 2014)

    Broader source: Energy.gov [DOE]

    Written statement of Deputy Assistant Secretary Matt Moury's Written Testimony Before the Subcommittee on Financial and Contracting Oversight Committee on Homeland Security and Government Affairs...

  2. Secretary Moniz's Written Testimony on the President's FY2016 Budget Before the U.S. House of Representatives Committee on Energy and Commerce Subcommittee on Energy and Power

    Office of Energy Efficiency and Renewable Energy (EERE)

    Secretary Moniz's written testimony on the budget before the House Committee on Energy and Commerce, Energy and Power Subcommittee on February 11, 2015.

  3. 3-15-11_Final_Testimony_(Worthington)_(SWPA).pdf

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

    As our budget request shows, we are focused on continuing this important mission even as we seek to tighten our belts along with the rest of the country so that present and future ...

  4. Abstract Testimony of Dan S. Born* President, Louisiana Chemical...

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

    Louisiana Chemical Association 2040 One American Place Baton Rouge, LA 70825 dan@lca.org 225.376.7660 Presented to the Quadrennial Energy Review Task Force May 27, 2014 LSU...

  5. PowerPoint Presentation

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

    Superior Energy Performance for Energy Efficiency Program Administrators ADVANCED MANUFACTURING OFFICE Outline  Background - Existing Industry Energy Efficiency Portfolios - Barriers to Energy Management System Implementation - DOE Voluntary Industrial Programs * Better Plants * Superior Energy Performance  Strategic Energy Management Business Case  DOE Tools and Resources  Return on Investment  Awareness and Implementation  Testimonials and Key Takeaways 1 ADVANCED

  6. Radio and Spectrum Management | Department of Energy

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

    Radio and Spectrum Management Radio and Spectrum Management DOE Radio and Spectrum Workshop 43.pdf (49.58 KB) More Documents & Publications ICAM Workshop Ad Hoc Meetings Spectrum ...

  7. Radio Frequency Engineering, MDE, Accelerator Operations and...

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

    RF Technology & Electronics, RFE About Us AOT Home Teams Low-Level Radio Frequency Magnet Power Supplies, Pulsed Power Radio Frequency, High Voltage Technologies Radio Frequency...

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

    SciTech Connect (OSTI)

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

    2013-03-01

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

  9. History and testimony of competency-based development at Sandia National Laboratories.

    SciTech Connect (OSTI)

    Burt, Rebecca A.; Narahara, Sheryl K.

    2004-04-01

    More than ten years ago, Sandia managers defined a set of traits and characteristics that were needed for success at Sandia. Today, the Sandia National Laboratories Success Profile Competencies continue to be powerful tools for employee and leadership development. The purpose of this report is to revisit the historical events that led to the creation and adaptation of the competencies and to position them for integration in future employee selection, development, and succession planning processes. This report contains an account of how the competencies were developed, testimonies of how they are used within the organization, and a description of how they will be foundational elements of new processes.

  10. Wavelength Comparison Radio Infrared Ultraviolet

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

    ... What is the origin of the nuclei found on Earth? AM Radio Microwave Visible Sunlight X-ray TV and FM Radio Mt. Everest Skyscraper Person Pinhead Fingernail Virus Atom Atomic ...

  11. Radio Channel Simulator (RCSM)

    Energy Science and Technology Software Center (OSTI)

    2007-01-31

    This is a simulation package for making site specific predictions of radio signal strength. The software computes received power at discrete grid points as a function of the transmitter location and propagation environment. It is intended for use with wireless network simulation packages and to support wireless network deployments.

  12. RADIO RANGING DEVICE

    DOE Patents [OSTI]

    Nieset, R.T.

    1961-05-16

    A radio ranging device is described. It utilizes a super regenerative detector-oscillator in which echoes of transmitted pulses are received in proper phase to reduce noise energy at a selected range and also at multiples of the selected range.

  13. Radio emission of extragalactic objects

    SciTech Connect (OSTI)

    Tovmasian, G.M.

    1981-01-01

    A brief review is given of the observations of extragalactic radio sources made in recent years. Attention is given to the structure of radio galaxies and quasars, to the variability of extragalactic radio sources, and to superluminal expansion, normal galaxies, and observations of neutral hydrogen and molecules in galaxies.

  14. Testimony by

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

    ... Halting Yucca Mountain is Wrong Decision First, let me say that the individuals and groups I represent in South Carolina and Georgia continue to believe that the Administration's ...

  15. Hoffman Testimony

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

    of R&D and Acting Chief Operating Officer Office of Electricity Delivery & Energy Reliability Department of Energy Committee on Energy and Natural Resources United States Senate November 6, 2007 Mr. Chairman and Members of the Committee, thank you for this opportunity to testify on behalf of the Department of Energy (DOE) on the nation's domestic energy sector workforce. Our nation's technical workforce is the backbone of our economy. These individuals have accumulated a wealth of

  16. Hoffman Testimony

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

    R&D, Office of Electricity Delivery & Energy Reliability Department of Energy Committee on Science and Technology Energy and Environment Subcommittee U.S. House of Representatives October 3, 2007 Mr. Chairman and Members of the Subcommittee thank you for this opportunity to testify on behalf of the Department of Energy (DOE) on "Energy Storage Technologies: State of Development for Stationary and Vehicular Applications." The Department of Energy places great emphasis on the

  17. PowerPoint Presentation

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

    0 Superior Energy Performance - Customer Information ADVANCED MANUFACTURING OFFICE Outline  Value of Energy Management  ISO 50001- Energy Management Systems  Superior Energy Performance  Getting Started with SEP  Testimonials, Benefits and Key Takeaways 1 ADVANCED MANUFACTURING OFFICE VALUE OF ENERGY MANAGEMENT Superior Energy Performance 2 ADVANCED MANUFACTURING OFFICE Why do many companies consume more energy than necessary?  Other priorities prevent implementation of energy

  18. Search for Axion Radio Broadcasts from the Galaxy | Argonne National...

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

    Search for Axion Radio Broadcasts from the Galaxy November 23, 2015 3:30PM to 4:30PM Presenter Aaron Chou, Fermilab Location Building 203, Room R150 Type Seminar Abstract:...

  19. A Present . . . And A Future | U.S. DOE Office of Science (SC)

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

    A Present . . . And A Future News News Home Featured Articles 2016 2015 2014 2013 2012 2011 2010 2009 2008 2007 2006 2005 Science Headlines Science Highlights Presentations & Testimony News Archives Communications and Public Affairs Contact Information Office of Science U.S. Department of Energy 1000 Independence Ave., SW Washington, DC 20585 P: (202) 586-5430 12.12.12 A Present . . . And A Future Students are hitting the books - instead of the mall - in preparation for the 2013 National

  20. Workshop Presentations

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

    Presentations Workshop Presentations Large Scale Computing and Storage Requirements for Fusion Energy Sciences An FES ASCR NERSC Workshop August 3-4, 2010 Sort by: Default | ...

  1. A COMBINED LOW-RADIO FREQUENCY/X-RAY STUDY OF GALAXY GROUPS. I. GIANT METREWAVE RADIO TELESCOPE OBSERVATIONS AT 235 MHz AND 610 MHz

    SciTech Connect (OSTI)

    Giacintucci, Simona; O'Sullivan, Ewan; Vrtilek, Jan; David, Laurence P.; Mazzotta, Pasquale; Gitti, Myriam; Jones, Christine; Forman, William R.; Raychaudhury, Somak; Ponman, Trevor; Venturi, Tiziana; Athreya, Ramana M.; Clarke, Tracy E.; Murgia, Matteo; Ishwara-Chandra, C. H.

    2011-05-10

    We present new Giant Metrewave Radio Telescope observations at 235 MHz and 610 MHz of 18 X-ray bright galaxy groups. These observations are part of an extended project, presented here and in future papers, which combines low-frequency radio and X-ray data to investigate the interaction between central active galactic nuclei (AGNs) and the intra-group medium (IGM). The radio images show a very diverse population of group-central radio sources, varying widely in size, power, morphology, and spectral index. Comparison of the radio images with Chandra and XMM-Newton X-ray images shows that groups with significant substructure in the X-ray band and marginal radio emission at {approx}>1 GHz host low-frequency radio structures that correlate with substructures in IGM. Radio-filled X-ray cavities, the most evident form of AGN/IGM interaction in our sample, are found in half of the systems and are typically associated with small, low-, or mid-power double radio sources. Two systems, NGC5044 and NGC4636, possess multiple cavities, which are isotropically distributed around the group center, possibly due to group weather. In other systems the radio/X-ray correlations are less evident. However, the AGN/IGM interaction can manifest itself through the effects of the high-pressure medium on the morphology, spectral properties, and evolution of the radio-emitting plasma. In particular, the IGM can confine fading radio lobes in old/dying radio galaxies and prevent them from dissipating quickly. Evidence for radio emission produced by former outbursts that co-exist with current activity is found in six groups of the sample.

  2. Presentation Timer

    Energy Science and Technology Software Center (OSTI)

    2010-06-23

    Abstract Conferences and Meetings feature many presentations on a tight schedule. The Session Timer system provides an electronic display for showing the remaining time in a presentation. It provides continuous feedback so the speaker can judge the pace throughout a presentation. The timer automates the job so the session chairman does not have to awkwardly interrupt the speaker.

  3. Stabilized radio-frequency quadrupole

    DOE Patents [OSTI]

    Lancaster, H.D.; Fugitt, J.A.; Howard, D.R.

    1982-09-29

    A long-vane stabilized radio frequency resonator for accelerating charged particles and including means defining a radio frequency resonator cavity, a plurality of long vanes mounted in the defining means for dividing the cavity into sections, and means interconnecting opposing ones of the plurality of vanes for stabilizing the resonator.

  4. Workshop Presentations

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

    Agenda Presentations Logistics Reference Materials Participants Organizing Committee Case Study Worksheets High Energy Physics (HEP) Nuclear Physics (NP) Overview Published Reports Case Study FAQs NERSC HPC Achievement Awards Share Your Research User Submitted Research Citations NERSC Citations Home » Science at NERSC » HPC Requirements Reviews » Requirements Reviews: Target 2014 » Fusion Energy Sciences (FES) » Presentations Workshop Presentations Large Scale Computing and Storage

  5. Workshop Presentations

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

    High Energy Physics (HEP) Agenda Presentations Reference Materials Participants Organizing Committee Nuclear Physics (NP) Overview Published Reports Case Study FAQs NERSC HPC Achievement Awards Share Your Research User Submitted Research Citations NERSC Citations Home » Science at NERSC » HPC Requirements Reviews » Requirements Reviews: Target 2014 » High Energy Physics (HEP) » Presentations Workshop Presentations Sort by: Default | Name | Date (low-high) | Date (high-low) Advanced

  6. PRESENTATION TITLE

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

    Hydroelectric Design Center "Leaders in Hydropower Engineering" 12 April 2016 Presentation ... Atlanta, GA BUILDING STRONG HYDROELECTRIC DESIGN CENTER 2 Items for Discussion ...

  7. Workshop Presentations

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

    High Energy Physics (HEP) Agenda Presentations Reference Materials Participants Organizing Committee Nuclear Physics (NP) Overview Published Reports Case Study FAQs NERSC HPC ...

  8. Workshop Presentations

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

    Agenda Presentations Logistics Reference Materials Participants Organizing Committee Case Study Worksheets High Energy Physics (HEP) Nuclear Physics (NP) Overview Published Reports ...

  9. PRESENTATION TITLE

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

    Center "Leaders in Hydropower Engineering" 11 March 2013 Presentation for Southeastern Federal Power Alliance Steven R. Miles, PE, PMP Director, HDC BUILDING STRONG ...

  10. Radio frequency coaxial feedthrough

    DOE Patents [OSTI]

    Owens, Thomas L.

    1989-01-17

    An improved radio frequency coaxial transmission line vacuum feed-through provided based on the use of a half-wavelength annular dielectric pressure barrier disk, or multiple disks comprising an effective half wavelength structure to eliminate reflections from the barrier surfaces. Gas-tight seals are formed about the outer and inner diameter surfaces of the barrier disk using a sealing technique which generates radial forces sufficient to form seals by forcing the conductor walls against the surfaces of the barrier disks in a manner which does not deform the radii of the inner and outer conductors, thereby preventing enhancement of the electric field at the barrier faces which limits voltage and power handling capabilities of a feedthrough.

  11. Convective Radio Occultations Final Campaign Summary (Technical...

    Office of Scientific and Technical Information (OSTI)

    Convective Radio Occultations Final Campaign Summary Citation Details In-Document Search Title: Convective Radio Occultations Final Campaign Summary Deep convective systems are ...

  12. Chautauqua notebook: appropriate technology on radio

    SciTech Connect (OSTI)

    Renz, B.

    1981-01-01

    Experiences in establishing and maintaining a regional call-in information-exchange radio show (Chautauqua) on energy conservation, appropriate technology, renewable energy sources, and self-reliance are discussed. Information is presented on: appropriate technology; the Chautauquaa concept; topics discussed; research performed; guests; interviewing tips; types of listeners; program features; where to find help; promotion and publicity; the technical and engineering aspects; the budget and funding; and station policies. (MCW)

  13. Advanced Radio Frequency-Based Sensors for Monitoring Diesel Particulate

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

    Filter Loading and Regeneration | Department of Energy Radio Frequency-Based Sensors for Monitoring Diesel Particulate Filter Loading and Regeneration Advanced Radio Frequency-Based Sensors for Monitoring Diesel Particulate Filter Loading and Regeneration Presentation given at the 16th Directions in Engine-Efficiency and Emissions Research (DEER) Conference in Detroit, MI, September 27-30, 2010. deer10_sappok.pdf (1.83 MB) More Documents & Publications Vehicle Technologies Office Merit

  14. Workshop Presentations

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

    Agenda Presentations Logistics Reference Materials Participants Organizing Committee Biological and Environmental Science (BER) Fusion Energy Sciences (FES) High Energy Physics (HEP) Nuclear Physics (NP) Overview Published Reports Case Study FAQs NERSC HPC Achievement Awards Share Your Research User Submitted Research Citations NERSC Citations Home » Science at NERSC » HPC Requirements Reviews » Requirements Reviews: Target 2014 » Basic Energy Sciences (BES) » Presentations Workshop

  15. Workshop Presentations

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

    Presentations Workshop Presentations Large Scale Computing and Storage Requirements for Advanced Scientific Computing Research An ASCR / NERSC Workshop January 5-6, 2011 Sort by: Default | Name | Date (low-high) | Date (high-low) Welcome, introductions, workshop goals, charge to committee January 5, 2011 | Author(s): Yukiko Sekine | Workshop outline, logistics, format January 5, 2011 | Author(s): Harvey Wasserman | ASCR Program Office Research Directions January 5, 2011 | Author(s): Karen Pao |

  16. Workshop Presentations

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

    Presentations Workshop Presentations Large Scale Computing and Storage Requirements for Fusion Energy Sciences An FES / ASCR / NERSC Workshop August 3-4, 2010 Sort by: Default | Name | Date (low-high) | Date (high-low) FES/NERSC Requirements Gathering Workshop August 3, 2010 | Author(s): Yukiko Sekine | Workshop Goals & Process: Large Scale Computing and Storage Requirements for Fusion Energy Sciences August 3, 2010 | Author(s): Harvey Wasserman | FES Overview August 3, 2010 | Author(s):

  17. Workshop Presentations

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

    Presentations Workshop Presentations Sort by: Default | Name | Date (low-high) | Date (high-low) Workshop Goals/Overview November 12, 2009 | Author(s): Yukiko Sekine | Workshop Logistics November 12, 2009 | Author(s): Harvey Wasserman | DOE HEP Overview November 12, 2009 | Author(s): Amber Boehnlein | NERSC Role in High Energy Physics Research November 12, 2009 | Author(s): Kathy Yelick | Community Petascale Project for Accelerator Science and Simulation (ComPASS) November 12, 2009 | Author(s):

  18. Workshop Presentations

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

    Presentations Workshop Presentations Large Scale Computing and Storage Requirements for Basic Energy Sciences An BES / ASCR / NERSC Workshop February 9-10, 2010 Sort by: Default | Name | Date (low-high) | Date (high-low) BES/NERSC Requirements Gathering Workshop, Workshop Goals February 9, 2010 | Author(s): Yukiko Sekine | Workshop outline, logistics, format, procedures February 9, 2010 | Author(s): Richard Gerber | BES Program Office Research Directions February 9, 2010 | Author(s): Mark

  19. Workshop Presentations

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

    Presentations Workshop Presentations Sort by: Default | Name | Date (low-high) | Date (high-low) Workshop Goals/Overview May 7, 2009 | Author(s): Yukiko Sekine | Workshop Logistics May 7, 2009 | Author(s): Harvey Wasserman | BER Overview May 7, 2009 | Author(s): David Thomassen | NERSC Overview May 7, 2009 | Author(s): Kathy Yelick | CCSM and Earth System Model May 7, 2009 | Author(s): Lawrence Buja, John Drake, Michael Wehner | Role of Climate System Noise in Climate Simulations May 7, 2009 |

  20. EXAMINING THE RADIO-LOUD/RADIO-QUIET DICHOTOMY WITH NEW CHANDRA AND VLA OBSERVATIONS OF 13 UGC GALAXIES

    SciTech Connect (OSTI)

    Kharb, P.; Axon, D. J.; Robinson, A.; Capetti, A.; Balmaverde, B.; Chiaberge, M.; Macchetto, D.; Grandi, P.; Giovannini, G.; Montez, R.

    2012-04-15

    We present the results from new {approx}15 ks Chandra-ACIS and 4.9 GHz Very Large Array (VLA) observations of 13 galaxies hosting low-luminosity active galactic nuclei (AGNs). This completes the multiwavelength study of a sample of 51 nearby early-type galaxies described in Capetti and Balmaverde and Balmaverde and Capetti. The aim of the three previous papers was to explore the connection between the host galaxies and AGN activity in a radio-selected sample. We detect nuclear X-ray emission in eight sources and radio emission in all but one (viz., UGC 6985). The new VLA observations improve the spatial resolution by a factor of 10: the presence of nuclear radio sources in 12 of the 13 galaxies confirms their AGN nature. As previously indicated, the behavior of the X-ray and radio emission in these sources depends strongly on the form of their optical surface brightness profiles derived from Hubble Space Telescope imaging, i.e., on their classification as 'core', 'power-law', or 'intermediate' galaxies. With more than twice the number of 'power-law' and 'intermediate' galaxies compared to previous work, we confirm with a much higher statistical significance that these galaxies lie well above the radio-X-ray correlation established in Fanaroff-Riley type I radio galaxies and the low-luminosity 'core' galaxies. This result highlights the fact that the 'radio-loud/radio-quiet' dichotomy is a function of the host galaxy's optical surface brightness profile. We present radio-optical-X-ray spectral indices for all 51 sample galaxies. Survival statistics point to significant differences in the radio-to-optical and radio-to-X-ray spectral indices between the 'core' and 'power-law galaxies (Gehan's Generalized Wilcoxon test probability p for the two classes being statistically similar is <10{sup -5}), but not in the optical-to-X-ray spectral indices (p = 0.25). Therefore, the primary difference between the 'core' and 'power-law' galaxies is in their ability to launch

  1. DETECTION OF RADIO EMISSION FROM FIREBALLS

    SciTech Connect (OSTI)

    Obenberger, K. S.; Taylor, G. B.; Dowell, J.; Henning, P. A.; Schinzel, F. K.; Stovall, K.; Hartman, J. M.; Ellingson, S. W.; Helmboldt, J. F.; Wilson, T. L.; Kavic, M.; Simonetti, J. H.

    2014-06-20

    We present the findings from the Prototype All-Sky Imager, a back end correlator of the first station of the Long Wavelength Array, which has recorded over 11,000 hr of all-sky images at frequencies between 25 and 75 MHz. In a search of this data for radio transients, we have found 49 long-duration (10 s of seconds) transients. Ten of these transients correlate both spatially and temporally with large meteors (fireballs), and their signatures suggest that fireballs emit a previously undiscovered low frequency, non-thermal pulse. This emission provides a new probe into the physics of meteors and identifies a new form of naturally occurring radio transient foreground.

  2. Microwave and Radio Frequency Workshop

    Broader source: Energy.gov [DOE]

    At the Microwave and Radio Frequency Workshop (held in Long Beach, CA, on July 25, 2012), academic and industry experts discussed the existing and emerging electrotechnologies such as microwave ...

  3. Presentation Title

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

    Validation Methodology and Results Jeff Roche Presented at the 2013 Sandia PV Performance Modeling Workshop Santa Clara, CA. May 1-2, 2013 Published by Sandia National Laboratories with the Permission of the Author 2 © 2013 SunPower Corporation Why Validation is Important * To prove that you can accurately model across a wide range of products and geographical locations * Performance prediction key input in project finance models - Proven accuracy builds internal and investor confidence in

  4. Presentation Title

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

    PVSim - SunPower's PV Simulation Tool Ben Bourne Presented at the 2013 Sandia PV Performance Modeling Workshop Santa Clara, CA. May 1-2, 2013 Published by Sandia National Laboratories with the Permission of the Author 2 © 2013 SunPower Corporation Why SunPower Maintains an In-House Tool SunPower systems are investments * Customers need to know how much power and energy their system will produce over time * SunPower needs to know how to price these systems * SunPower needs to be able to

  5. DEEP SPITZER OBSERVATIONS OF INFRARED-FAINT RADIO SOURCES: HIGH-REDSHIFT RADIO-LOUD ACTIVE GALACTIC NUCLEI?

    SciTech Connect (OSTI)

    Norris, Ray P.; Mao, Minnie; Afonso, Jose; Cava, Antonio; Farrah, Duncan; Oliver, Seb; Huynh, Minh T.; Mauduit, Jean-Christophe; Surace, Jason; Ivison, R. J.; Jarvis, Matt; Lacy, Mark; Maraston, Claudia; Middelberg, Enno; Seymour, Nick

    2011-07-20

    Infrared-faint radio sources (IFRSs) are a rare class of objects which are relatively bright at radio wavelengths but very faint at infrared and optical wavelengths. Here we present sensitive near-infrared observations of a sample of these sources taken as part of the Spitzer Extragalactic Representative Volume Survey. Nearly all the IFRSs are undetected at a level of {approx}1 {mu}Jy in these new deep observations, and even the detections are consistent with confusion with unrelated galaxies. A stacked image implies that the median flux density is S{sub 3.6{mu}m} {approx} 0.2 {mu}Jy or less, giving extreme values of the radio-infrared flux density ratio. Comparison of these objects with known classes of object suggests that the majority are probably high-redshift radio-loud galaxies, possibly suffering from significant dust extinction.

  6. SPITZER OBSERVATIONS OF HOTSPOTS IN RADIO LOBES

    SciTech Connect (OSTI)

    Werner, Michael W.; Murphy, David W.; Livingston, John H.; Gorjian, Varoujan; Jones, Dayton L.; Meier, David L.; Lawrence, Charles R.

    2012-11-10

    We have carried out a systematic search with Spitzer Warm Mission and archival data for infrared emission from the hotspots in radio lobes that have been described by Hardcastle et al. These hotspots have been detected with both radio and X-ray observations, but an observation at an intermediate frequency in the infrared can be critical to distinguish between competing models for particle acceleration and radiation processes in these objects. Between the archival and warm mission data, we report detections of 18 hotspots; the archival data generally include detections at all four IRAC bands, the Warm Mission data only at 3.6 {mu}m. Using a theoretical formalism adopted from Godfrey et al., we fit both archival and warm mission spectral energy distributions (SEDs)-including radio, X-ray, and optical data from Hardcastle as well as the Spitzer data-with a synchrotron self-Compton (SSC) model, in which the X-rays are produced by Compton scattering of the radio frequency photons by the energetic electrons which radiate them. With one exception, an SSC model requires that the magnetic field be less or much less than the equipartition value which minimizes total energy and has comparable amounts of energy in the magnetic field and in the energetic particles. This conclusion agrees with those of comparable recent studies of hotspots, and with the analysis presented by Hardcastle et al. We also show that the infrared data rule out the simplest synchrotron-only models for the SEDs. We briefly discuss the implications of these results and of alternate interpretations of the data.

  7. Chautauqua radio workshop project. Final report, July 1, 1980-October 30, 1981

    SciTech Connect (OSTI)

    Not Available

    1982-01-25

    Chautauqua is a daily call-in radio show (260 hour-long shows) broadcast over Public Radio Station WOUB fm, Athens, Ohio. This radio series covers a wide range of topics such as: energy conservation, developing small scale alternative energy sources (like windpower, solar energy, wood heat, alcohol production, earth-sheltered home construction, etc.), backyard vegetable production, and food preservation. The program's information is generated by the guests, listeners, and the show's host. An outline of the proposed steps to accomplish the proliferation of the Chautauqua radio concept throughout the US is presented. The Final Report from the Chautauqua Radio Workshop Project is presented along with the Chautauqua Notebook: appropriate technology on radio. (MCW)

  8. First `Winged' and `X'-shaped Radio Source Candidates

    SciTech Connect (OSTI)

    Cheung, C.C.

    2007-01-22

    A small number of double-lobed radio galaxies (17 from our own census of the literature) show an additional pair of low surface brightness ''wings'', thus forming an overall ''X''-shaped appearance. The origin of the wings in these radio sources is unclear. They may be the result of back-flowing plasma from the currently active radio lobes into an asymmetric medium surrounding the active nucleus, which would make these ideal systems in which to study thermal/non-thermal plasma interactions in extragalactic radio sources. Another possibility is that the wings are the aging radio lobes left over after a (rapid) realignment of the central supermassive black-hole/accretion disk system due perhaps to a merger. Generally, these models are not well tested; with the small number of known examples, previous works focused on detailed case studies of selected sources with little attempt at a systematic study of a large sample. Using the VLA-FIRST survey database, we are compiling a large sample of winged and X-shaped radio sources for such studies. As a first step toward this goal, an initial sample of 100 new candidate objects of this type are presented in this paper. The search process is described, optical identifications from available literature data, and basic radio data are presented. From the limited resolution FIRST images ({approx} 5''), we can already confidently classify a sufficient number of these objects as having the characteristic wing lengths >80% of the active lobes to more than double the number of known X-shaped radio sources. We have also included as candidates, radio sources with shorter wings (<80% wing to lobe length ratios), or simply ''winged'' sources, as it is probable that projection effects are important. Finally, among the candidates are four quasars (z=0.37 to 0.84), and several have morphologies suggestive of Fanaroff-Riley type-I (low-power) radio galaxies. While followup observations are necessary to confirm these identifications, this

  9. COMPARISONS OF COSMOLOGICAL MAGNETOHYDRODYNAMIC GALAXY CLUSTER SIMULATIONS TO RADIO OBSERVATIONS

    SciTech Connect (OSTI)

    Xu Hao; Li Hui; Collins, David C.; Govoni, Federica; Murgia, Matteo; Norman, Michael L.; Cen Renyue; Feretti, Luigina; Giovannini, Gabriele E-mail: hli@lanl.gov E-mail: mlnorman@ucsd.edu E-mail: matteo@oa-cagliari.inaf.it E-mail: lferetti@ira.inaf.it

    2012-11-01

    Radio observations of galaxy clusters show that there are {mu}G magnetic fields permeating the intracluster medium (ICM), but it is hard to accurately constrain the strength and structure of the magnetic fields without the help of advanced computer simulations. We present qualitative comparisons of synthetic Very Large Array observations of simulated galaxy clusters to radio observations of Faraday rotation measure (RM) and radio halos. The cluster formation is modeled using adaptive mesh refinement magnetohydrodynamic simulations with the assumption that the initial magnetic fields are injected into the ICM by active galactic nuclei (AGNs) at high redshift. In addition to simulated clusters in Xu et al., we present a new simulation with magnetic field injections from multiple AGNs. We find that the cluster with multiple injection sources is magnetized to a similar level as in previous simulations with a single AGN. The RM profiles from simulated clusters, both |RM| and the dispersion of RM ({sigma}{sub RM}), are consistent at a first order with the radial distribution from observations. The correlations between the {sigma}{sub RM} and X-ray surface brightness from simulations are in a broad agreement with the observations, although there is an indication that the simulated clusters could be slightly overdense and less magnetized with respect to those in the observed sample. In addition, the simulated radio halos agree with the observed correlations between the radio power versus the cluster X-ray luminosity and between the radio power versus the radio halo size. These studies show that the cluster-wide magnetic fields that originate from AGNs and are then amplified by the ICM turbulence match observations of magnetic fields in galaxy clusters.

  10. Hybrid spread spectrum radio system

    DOE Patents [OSTI]

    Smith, Stephen F. [London, TN; Dress, William B. [Camas, WA

    2010-02-09

    Systems and methods are described for hybrid spread spectrum radio systems. A method, includes receiving a hybrid spread spectrum signal including: fast frequency hopping demodulating and direct sequence demodulating a direct sequence spread spectrum signal, wherein multiple frequency hops occur within a single data-bit time and each bit is represented by chip transmissions at multiple frequencies.

  11. THE SPITZER HIGH-REDSHIFT RADIO GALAXY SURVEY

    SciTech Connect (OSTI)

    De Breuck, Carlos; Galametz, Audrey; Vernet, Joel; Seymour, Nick; Stern, Daniel; Eisenhardt, P. R. M.; Willner, S. P.; Fazio, G. G.; Lacy, Mark; Rettura, Alessandro; Rocca-Volmerange, Brigitte

    2010-12-10

    We present results from a comprehensive imaging survey of 70 radio galaxies at redshifts 1 < z < 5.2 using all three cameras on board the Spitzer Space Telescope. The resulting spectral energy distributions unambiguously show a stellar population in 46 sources and hot dust emission associated with the active nucleus in 59. Using a new rest-frame S{sub 3{sub {mu}m}}/S{sub 1.6{sub {mu}m}} versus S{sub 5{sub {mu}m}}/S{sub 3{sub {mu}m}} criterion, we identify 42 sources where the rest-frame 1.6 {mu}m emission from the stellar population can be measured. For these radio galaxies, the median stellar mass is high, 2 x 10{sup 11} M{sub sun}, and remarkably constant within the range 1 < z < 3. At z>3, there is tentative evidence for a factor of two decrease in stellar mass. This suggests that radio galaxies have assembled the bulk of their stellar mass by z {approx} 3, but confirmation by more detailed decomposition of stellar and active galactic nucleus (AGN) emission is needed. The rest-frame 500 MHz radio luminosities are only marginally correlated with stellar mass but are strongly correlated with the rest-frame 5 {mu}m hot dust luminosity. This suggests that the radio galaxies have a large range of Eddington ratios. We also present new Very Large Array 4.86 and 8.46 GHz imaging of 14 radio galaxies and find that radio core dominance-an indicator of jet orientation-is strongly correlated with hot dust luminosity. While all of our targets were selected as narrow-lined, type 2 AGNs, this result can be understood in the context of orientation-dependent models if there is a continuous distribution of orientations from obscured type 2 to unobscured type 1 AGNs rather than a clear dichotomy. Finally, four radio galaxies have nearby (<6'') companions whose mid-IR colors are suggestive of their being AGNs. This may indicate an association between radio galaxy activity and major mergers.

  12. Plasma phenomenology in astrophysical systems: Radio-sources and jets

    SciTech Connect (OSTI)

    Montani, Giovanni; Petitta, Jacopo

    2014-06-15

    We review the plasma phenomenology in the astrophysical sources which show appreciable radio emissions, namely Radio-Jets from Pulsars, Microquasars, Quasars, and Radio-Active Galaxies. A description of their basic features is presented, then we discuss in some details the links between their morphology and the mechanisms that lead to the different radio-emissions, investigating especially the role played by the plasma configurations surrounding compact objects (Neutron Stars, Black Holes). For the sake of completeness, we briefly mention observational techniques and detectors, whose structure set them apart from other astrophysical instruments. The fundamental ideas concerning angular momentum transport across plasma accretion diskstogether with the disk-source-jet coupling problemare discussed, by stressing their successes and their shortcomings. An alternative scenario is then inferred, based on a parallelism between astrophysical and laboratory plasma configurations, where small-scale structures can be found. We will focus our attention on the morphology of the radio-jets, on their coupling with the accretion disks and on the possible triggering phenomena, viewed as profiles of plasma instabilities.

  13. ELECTRON-BEAM-INDUCED RADIO EMISSION FROM ULTRACOOL DWARFS

    SciTech Connect (OSTI)

    Yu, S.; Doyle, J. G.; Kuznetsov, A.; Hallinan, G.; Antonova, A.; MacKinnon, A. L.; Golden, A.

    2012-06-10

    We present the numerical simulations for an electron-beam-driven and loss-cone-driven electron-cyclotron maser (ECM) with different plasma parameters and different magnetic field strengths for a relatively small region and short timescale in an attempt to interpret the recent discovered intense radio emission from ultracool dwarfs. We find that a large amount of electromagnetic (EM) field energy can be effectively released from the beam-driven ECM, which rapidly heats the surrounding plasma. A rapidly developed high-energy tail of electrons in velocity space (resulting from the heating process of the ECM) may produce the radio continuum depending on the initial strength of the external magnetic field and the electron beam current. Both significant linear polarization and circular polarization of EM waves can be obtained from the simulations. The spectral energy distributions of the simulated radio waves show that harmonics may appear from 10 to 70{nu}{sub pe} ({nu}{sub pe} is the electron plasma frequency) in the non-relativistic case and from 10 to 600{nu}{sub pe} in the relativistic case, which makes it difficult to find the fundamental cyclotron frequency in the observed radio frequencies. A wide frequency band should therefore be covered by future radio observations.

  14. V-FASTR: THE VLBA FAST RADIO TRANSIENTS EXPERIMENT

    SciTech Connect (OSTI)

    Wayth, Randall B.; Tingay, Steven J.; Brisken, Walter F.; Deller, Adam T.; Majid, Walid A.; Thompson, David R.; Wagstaff, Kiri L.

    2011-07-10

    Recent discoveries of dispersed, non-periodic impulsive radio signals with single-dish radio telescopes have sparked significant interest in exploring the relatively uncharted space of fast transient radio signals. Here we describe V-FASTR, an experiment to perform a blind search for fast transient radio signals using the Very Long Baseline Array (VLBA). The experiment runs entirely in a commensal mode, alongside normal VLBA observations and operations. It is made possible by the features and flexibility of the DiFX software correlator that is used to process VLBA data. Using the VLBA for this type of experiment offers significant advantages over single-dish experiments, including a larger field of view, the ability to easily distinguish local radio-frequency interference from real signals, and the possibility to localize detected events on the sky to milliarcsecond accuracy. We describe our software pipeline, which accepts short integration ({approx} ms) spectrometer data from each antenna in real time during correlation and performs an incoherent dedispersion separately for each antenna, over a range of trial dispersion measures. The dedispersed data are processed by a sophisticated detector and candidate events are recorded. At the end of the correlation, small snippets of the raw data at the time of the events are stored for further analysis. We present the results of our event detection pipeline from some test observations of the pulsars B0329+54 and B0531+21 (the Crab pulsar).

  15. HIGH CURRENT RADIO FREQUENCY ION SOURCE

    DOE Patents [OSTI]

    Abdelaziz, M.E.

    1963-04-01

    This patent relates to a high current radio frequency ion source. A cylindrical plasma container has a coil disposed around the exterior surface thereof along the longitudinal axis. Means are provided for the injection of an unionized gas into the container and for applying a radio frequency signal to the coil whereby a radio frequency field is generated within the container parallel to the longitudinal axis thereof to ionize the injected gas. Cathode and anode means are provided for extracting transverse to the radio frequency field from an area midway between the ends of the container along the longitudinal axis thereof the ions created by said radio frequency field. (AEC)

  16. Radio frequency coaxial feedthrough device

    DOE Patents [OSTI]

    Owens, Thomas L.; Baity, Frederick W.; Hoffman, Daniel J.; Whealton, John H.

    1987-01-01

    A radio frequency coaxial vacuum feedthrough is provided which utilizes a cylindrical ceramic vacuum break formed of an alumina ceramic. The cylinder is coaxially disposed and brazed between tapered coaxial conductors to form a vacuum sealed connection between a pressurized upstream coaxial transmission line and a utilization device located within a vacuum container. The feedthrough provides 50 ohm matched impedance RF feedthrough up to about 500 MHz at power levels in the multimegawatt range.

  17. Software-defined Radio Based Wireless Tomography: Experimental Demonstration and Verification

    SciTech Connect (OSTI)

    Bonior, Jason D; Hu, Zhen; Guo, Terry N.; Qiu, Robert C.; Browning, James P.; Wicks, Michael C.

    2015-01-01

    This letter presents an experimental demonstration of software-defined-radio-based wireless tomography using computer-hosted radio devices called Universal Software Radio Peripheral (USRP). This experimental brief follows our vision and previous theoretical study of wireless tomography that combines wireless communication and RF tomography to provide a novel approach to remote sensing. Automatic data acquisition is performed inside an RF anechoic chamber. Semidefinite relaxation is used for phase retrieval, and the Born iterative method is utilized for imaging the target. Experimental results are presented, validating our vision of wireless tomography.

  18. Radio Channel Simulator - Energy Innovation Portal

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

    Electricity Transmission Electricity Transmission Early Stage R&D Early Stage R&D Find More Like This Return to Search Radio Channel Simulator Oak Ridge National Laboratory Contact ORNL About This Technology Technology Marketing SummaryRadio Channel Simulator (RCSim) is a simulation package for making site-specific predictions of radio signal strength. The software computes received power at discrete grid points as a function of the transmitter location and propagation environment. It is

  19. Secure Software-Defined Radio Project

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

    event and access logging, encryption, disabling of unused ports, and intelligent password and network key management. * Many radios have data throughput below 1 megabit per ...

  20. Hybrid spread spectrum radio system

    DOE Patents [OSTI]

    Smith, Stephen F.; Dress, William B.

    2010-02-02

    Systems and methods are described for hybrid spread spectrum radio systems. A method includes modulating a signal by utilizing a subset of bits from a pseudo-random code generator to control an amplification circuit that provides a gain to the signal. Another method includes: modulating a signal by utilizing a subset of bits from a pseudo-random code generator to control a fast hopping frequency synthesizer; and fast frequency hopping the signal with the fast hopping frequency synthesizer, wherein multiple frequency hops occur within a single data-bit time.

  1. ULTRA STEEP SPECTRUM RADIO SOURCES IN THE LOCKMAN HOLE: SERVS IDENTIFICATIONS AND REDSHIFT DISTRIBUTION AT THE FAINTEST RADIO FLUXES

    SciTech Connect (OSTI)

    Afonso, J.; Bizzocchi, L.; Grossi, M.; Messias, H.; Fernandes, C. A. C.; Ibar, E.; Ivison, R. J.; Simpson, C.; Chapman, S.; Gonzalez-Solares, E.; Jarvis, M. J.; Rottgering, H.; Norris, R. P.; Dunlop, J.; Best, P.; Pforr, J.; Vaccari, M.; Seymour, N.; Farrah, D.; Huang, J.-S.; and others

    2011-12-20

    Ultra steep spectrum (USS) radio sources have been successfully used to select powerful radio sources at high redshifts (z {approx}> 2). Typically restricted to large-sky surveys and relatively bright radio flux densities, it has gradually become possible to extend the USS search to sub-mJy levels, thanks to the recent appearance of sensitive low-frequency radio facilities. Here a first detailed analysis of the nature of the faintest USS sources is presented. By using Giant Metrewave Radio Telescope and Very Large Array radio observations of the Lockman Hole at 610 MHz and 1.4 GHz, a sample of 58 USS sources, with 610 MHz integrated fluxes above 100 {mu}Jy, is assembled. Deep infrared data at 3.6 and 4.5 {mu}m from the Spitzer Extragalactic Representative Volume Survey (SERVS) are used to reliably identify counterparts for 48 (83%) of these sources, showing an average total magnitude of [3.6]{sub AB} = 19.8 mag. Spectroscopic redshifts for 14 USS sources, together with photometric redshift estimates, improved by the use of the deep SERVS data, for a further 19 objects, show redshifts ranging from z = 0.1 to z = 2.8, peaking at z {approx} 0.6 and tailing off at high redshifts. The remaining 25 USS sources, with no redshift estimate, include the faintest [3.6] magnitudes, with 10 sources undetected at 3.6 and 4.5 {mu}m (typically [3.6] {approx}> 22-23 mag from local measurements), which suggests the likely existence of higher redshifts among the sub-mJy USS population. The comparison with the Square Kilometre Array Design Studies Simulated Skies models indicates that Fanaroff-Riley type I radio sources and radio-quiet active galactic nuclei may constitute the bulk of the faintest USS population, and raises the possibility that the high efficiency of the USS technique for the selection of high-redshift sources remains even at the sub-mJy level.

  2. The Isotropic Radio Background and Annihilating Dark Matter

    SciTech Connect (OSTI)

    Hooper, Dan; Belikov, Alexander V.; Jeltema, Tesla E.; Linden, Tim; Profumo, Stefano; Slatyer, Tracy R.

    2012-11-01

    Observations by ARCADE-2 and other telescopes sensitive to low frequency radiation have revealed the presence of an isotropic radio background with a hard spectral index. The intensity of this observed background is found to exceed the flux predicted from astrophysical sources by a factor of approximately 5-6. In this article, we consider the possibility that annihilating dark matter particles provide the primary contribution to the observed isotropic radio background through the emission of synchrotron radiation from electron and positron annihilation products. For reasonable estimates of the magnetic fields present in clusters and galaxies, we find that dark matter could potentially account for the observed radio excess, but only if it annihilates mostly to electrons and/or muons, and only if it possesses a mass in the range of approximately 5-50 GeV. For such models, the annihilation cross section required to normalize the synchrotron signal to the observed excess is sigma v ~ (0.4-30) x 10^-26 cm^3/s, similar to the value predicted for a simple thermal relic (sigma v ~ 3 x 10^-26 cm^3/s). We find that in any scenario in which dark matter annihilations are responsible for the observed excess radio emission, a significant fraction of the isotropic gamma ray background observed by Fermi must result from dark matter as well.

  3. MULTIPLE SHOCK STRUCTURES IN A RADIO-SELECTED CLUSTER OF GALAXIES

    SciTech Connect (OSTI)

    Brown, S.; Duesterhoeft, J.; Rudnick, L.

    2011-01-20

    We present a new radio-selected cluster of galaxies, 0217+70, using observations from the Very Large Array and archival optical and X-ray data. The new cluster is one of only seven known that has candidate double peripheral radio relics, and the second of those with a giant radio halo (GRH), as well. It also contains unusual diffuse radio filaments interior to the peripheral relics and a clumpy, elongated X-ray structure. All of these indicate a very actively evolving system, with ongoing accretion and merger activity, illuminating a network of shocks, such as those first seen in numerical simulations. The peripheral relics are most easily understood as outgoing spherical merger shocks with large variations in brightness along them, likely reflecting the inhomogeneities in the shocks' magnetic fields. The interior filaments could be projections of substructures from the sheet-like peripheral shocks or they might be separate structures due to multiple accretion events. ROSAT images show large-scale diffuse X-ray emission coincident with the GRH and additional patchy diffuse emission that suggests a recent merger event. This uniquely rich set of radio shocks and halo offer the possibility, with deeper X-ray and optical data and higher resolution radio observations, of testing the models of how shocks and turbulence couple to the relativistic plasma. The cluster 0217+70 is also overluminous in the radio compared with the empirical radio-X-ray correlation for clusters-the third example of such a system. This new population of diffuse radio emission opens up the possibility of probing low-mass cluster mergers with upcoming deep radio continuum surveys.

  4. Radio imaging of a type IVM radio burst on the 14th of August 2010

    SciTech Connect (OSTI)

    Bain, H. M.; Krucker, S.; Saint-Hilaire, P.; Raftery, C. L.

    2014-02-10

    Propagating coronal mass ejections (CMEs) are often accompanied by burst signatures in radio spectrogram data. We present Nançay Radioheliograph observations of a moving source of broadband radio emission, commonly referred to as a type IV radio burst (type IVM), which occurred in association with a CME on the 14th of August 2010. The event was well observed at extreme ultraviolet (EUV) wavelengths by SDO/AIA and PROBA2/SWAP, and by the STEREO SECCHI and SOHO LASCO white light (WL) coronagraphs. The EUV and WL observations show the type IVM source to be cospatial with the CME core. The observed spectra is well fitted by a power law with a negative slope, which is consistent with optically thin gyrosynchrotron emission. The spectrum shows no turn over at the lowest Nançay frequencies. By comparing simulated gyrosynchrotron spectra with Nançay Radioheliograph observations, and performing a rigorous parameter search we are able to constrain several key parameters of the underlying plasma. Simulated spectra found to fit the data suggest a nonthermal electron distribution with a low energy cutoff of several tens to 100 keV, with a nonthermal electron density in the range 10{sup 0}-10{sup 2} cm{sup –3}, in a magnetic field of a few Gauss. The nonthermal energy content of the source is found to contain 0.001%-0.1% of the sources thermal energy content. Furthermore, the energy loss timescale for this distribution equates to several hours, suggesting that the electrons could be accelerated during the CME initiation or early propagation phase and become trapped in the magnetic structure of the CME core without the need to be replenished.

  5. Monochromatic radio frequency accelerating cavity

    DOE Patents [OSTI]

    Giordano, Salvatore

    1985-01-01

    A radio frequency resonant cavity having a fundamental resonant frequency and characterized by being free of spurious modes. A plurality of spaced electrically conductive bars are arranged in a generally cylindrical array within the cavity to define a chamber between the bars and an outer solid cylindrically shaped wall of the cavity. A first and second plurality of mode perturbing rods are mounted in two groups at determined random locations to extend radially and axially into the cavity thereby to perturb spurious modes and cause their fields to extend through passageways between the bars and into the chamber. At least one body of lossy material is disposed within the chamber to damp all spurious modes that do extend into the chamber thereby enabling the cavity to operate free of undesired spurious modes.

  6. Monochromatic radio frequency accelerating cavity

    DOE Patents [OSTI]

    Giordano, S.

    1984-02-09

    A radio frequency resonant cavity having a fundamental resonant frequency and characterized by being free of spurious modes. A plurality of spaced electrically conductive bars are arranged in a generally cylindrical array within the cavity to define a chamber between the bars and an outer solid cylindrically shaped wall of the cavity. A first and second plurality of mode perturbing rods are mounted in two groups at determined random locations to extend radially and axially into the cavity thereby to perturb spurious modes and cause their fields to extend through passageways between the bars and into the chamber. At least one body of lossy material is disposed within the chamber to damp all spurious modes that do extend into the chamber thereby enabling the cavity to operate free of undesired spurious modes.

  7. A radio frequency coaxial feedthrough

    DOE Patents [OSTI]

    Owens, T.L.

    1987-12-07

    An improved radio frequency coaxial transmission line vacuum feedthrough is provided based on the use of a half-wavelength annular dielectric pressure barrier disk, or multiple disks comprising an effective half wavelength structure to eliminate reflection from the barrier surfaces. Gas-tight seals are formed about the outer and inner diameter surfaces of the barrier disk using a sealing technique which generates radial forces sufficient to form seals by forcing the conductor walls against the surfaces of the barrier disks in a manner which does not deform the radii of the inner and outer conductors, thereby preventing enhancement of the electric field at the barrier faces which limits the voltage and power handling capabilities of a feedthrough.

  8. Microwave (MW) and Radio Frequency (RF) as Enabling Technologies...

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

    Microwave (MW) and Radio Frequency (RF) as Enabling Technologies for Advanced Manufacturing Microwave (MW) and Radio Frequency (RF) as Enabling Technologies for Advanced ...

  9. Advanced Radio Frequency-Based Sensors for Monitoring Diesel...

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

    Radio Frequency-Based Sensors for Monitoring Diesel Particulate Filter Loading and Regeneration Advanced Radio Frequency-Based Sensors for Monitoring Diesel Particulate Filter ...

  10. KTFC Midwest Bible Radio Wind Farm | Open Energy Information

    Open Energy Info (EERE)

    Owner KTFC Midwest Bible Radio Energy Purchaser KTFC Midwest Bible Radio Location IA Coordinates 42.4837, -96.3068 Show Map Loading map... "minzoom":false,"mappingservi...

  11. Using Radio Waves to Control Fusion Plasma Density

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

    Using Radio Waves to Control Fusion Plasma Density Using Radio Waves to Control Fusion Plasma Density Simulations Run at NERSC Support Fusion Experiments at MIT, General Atomics ...

  12. EA-1996: Glass Buttes Radio Station, Lake County, Oregon | Department...

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

    6: Glass Buttes Radio Station, Lake County, Oregon EA-1996: Glass Buttes Radio Station, Lake County, Oregon SUMMARY The Bureau of Land Management (BLM), with DOE's Bonneville Power...

  13. COLA. III. RADIO DETECTION OF ACTIVE GALACTIC NUCLEUS IN COMPACT MODERATE LUMINOSITY INFRARED GALAXIES

    SciTech Connect (OSTI)

    Parra, R.; Conway, J. E.; Aalto, S.; Appleton, P. N.; Norris, R. P.; Pihlstroem, Y. M.; Kewley, L. J.

    2010-09-01

    We present results from 4.8 GHz Very Large Array (VLA) and global very long baseline interferometry (VLBI) observations of the northern half of the moderate FIR luminosity (median L{sub IR} = 10{sup 11.01} L{sub sun}) COLA sample of star-forming galaxies. VLBI sources are detected in a high fraction (20/90) of the galaxies observed. The radio luminosities of these cores ({approx}10{sup 21} W Hz{sup -1}) are too large to be explained by radio supernovae or supernova remnants and we argue that they are instead powered by active galactic nuclei (AGNs). These sub-parsec scale radio cores are preferentially detected toward galaxies whose VLA maps show bright 100-500 parsec scale nuclear radio components. Since these latter structures tightly follow the FIR to radio-continuum correlation for star formation, we conclude that the AGN-powered VLBI sources are associated with compact nuclear starburst environments. The implications for possible starburst-AGN connections are discussed. The detected VLBI sources have a relatively narrow range of radio luminosity consistent with models in which intense compact Eddington-limited starbursts regulate the gas supply onto a central supermassive black hole. The high incidence of AGN radio cores in compact starbursts suggests little or no delay between the starburst phase and the onset of AGN activity.

  14. PTF 12gzkA rapidly declining, high-velocity type Ic radio supernova

    SciTech Connect (OSTI)

    Horesh, Assaf; Kulkarni, Shrinivas R.; Corsi, Alessandra; Frail, Dale A.; Cenko, S. Bradley; Ben-Ami, Sagi; Gal-Yam, Avishay; Yaron, Ofer; Arcavi, Iair; Ofek, Eran O.; Kasliwal, Mansi M.

    2013-11-20

    Only a few cases of Type Ic supernovae (SNe) with high-velocity ejecta (?0.2 c) have been discovered and studied. Here, we present our analysis of radio and X-ray observations of the Type Ic SN PTF 12gzk. The radio emission declined less than 10 days after explosion, suggesting SN ejecta expanding at high velocity (?0.3 c). The radio data also indicate that the density of the circumstellar material (CSM) around the supernova is lower by a factor of ?10 than the CSM around normal Type Ic SNe. PTF 12gzk may therefore be an intermediate event between a 'normal' SN Ic and a gamma-ray-burst-SN-like event. Our observations of this rapidly declining radio SN at a distance of 58 Mpc demonstrates the potential to detect many additional radio SNe, given the new capabilities of the Very Large Array (improved sensitivity and dynamic scheduling), which are currently missed, leading to a biased view of radio SNe Ic. Early optical discovery followed by rapid radio observations would provide a full description of the ejecta velocity distribution and CSM densities around stripped massive star explosions as well as strong clues about the nature of their progenitor stars.

  15. THE 5 GHz ARECIBO SEARCH FOR RADIO FLARES FROM ULTRACOOL DWARFS

    SciTech Connect (OSTI)

    Route, Matthew; Wolszczan, Alexander E-mail: alex@astro.psu.edu

    2013-08-10

    We present the results of a 4.75 GHz survey of 33 brown dwarfs and one young exoplanetary system for flaring radio emission, conducted with the 305 m Arecibo radio telescope. The goal of this program was to detect and characterize the magnetic fields of objects cooler than spectral type L3.5, the coolest brown dwarf detected prior to our survey. We have also attempted to detect flaring radio emission from the HR 8799 planetary system, guided by theoretical work indicating that hot, massive exoplanets may have strong magnetic fields capable of generating radio emission at GHz frequencies. We have detected and confirmed radio flares from the T6.5 dwarf 2MASS J10475385+2124234. This detection dramatically extends the temperature range over which brown dwarfs appear to be at least sporadic radio-emitters, from 1900 K (L3.5) down to 900 K (T6.5). It also demonstrates that the utility of radio detection as a unique tool to study the magnetic fields of substellar objects extends to the coolest dwarfs, and, plausibly to hot, massive exoplanets. We have also identified a single, 3.6{sigma} flare from the L1 dwarf, 2MASS J1439284+192915. This detection is tentative and requires confirmation by additional monitoring observations.

  16. DIFFUSIVE SHOCK ACCELERATION SIMULATIONS OF RADIO RELICS

    SciTech Connect (OSTI)

    Kang, Hyesung; Ryu, Dongsu; Jones, T. W. E-mail: ryu@canopus.cnu.ac.kr

    2012-09-01

    Recent radio observations have identified a class of structures, so-called radio relics, in clusters of galaxies. The radio emission from these sources is interpreted as synchrotron radiation from GeV electrons gyrating in {mu}G-level magnetic fields. Radio relics, located mostly in the outskirts of clusters, seem to associate with shock waves, especially those developed during mergers. In fact, they seem to be good structures to identify and probe such shocks in intracluster media (ICMs), provided we understand the electron acceleration and re-acceleration at those shocks. In this paper, we describe time-dependent simulations for diffusive shock acceleration at weak shocks that are expected to be found in ICMs. Freshly injected as well as pre-existing populations of cosmic-ray (CR) electrons are considered, and energy losses via synchrotron and inverse Compton are included. We then compare the synchrotron flux and spectral distributions estimated from the simulations with those in two well-observed radio relics in CIZA J2242.8+5301 and ZwCl0008.8+5215. Considering that CR electron injection is expected to be rather inefficient at weak shocks with Mach number M {approx}< a few, the existence of radio relics could indicate the pre-existing population of low-energy CR electrons in ICMs. The implication of our results on the merger shock scenario of radio relics is discussed.

  17. High power radio frequency attenuation device

    DOE Patents [OSTI]

    Kerns, Quentin A.; Miller, Harold W.

    1984-01-01

    A resistor device for attenuating radio frequency power includes a radio frequency conductor connected to a series of fins formed of high relative magnetic permeability material. The fins are dimensional to accommodate the skin depth of the current conduction therethrough, as well as an inner heat conducting portion where current does not travel. Thermal connections for air or water cooling are provided for the inner heat conducting portions of each fin. Also disclosed is a resistor device to selectively alternate unwanted radio frequency energy in a resonant cavity.

  18. Multi-mode radio frequency device

    DOE Patents [OSTI]

    Gilbert, Ronald W.; Carrender, Curtis Lee; Anderson, Gordon A.; Steele, Kerry D.

    2007-02-13

    A transponder device having multiple modes of operation, such as an active mode and a passive mode, wherein the modes of operation are selected in response to the strength of a received radio frequency signal. A communication system is also provided having a transceiver configured to transmit a radio frequency signal and to receive a responsive signal, and a transponder configured to operate in a plurality of modes and to activate modes of operation in response to the radio frequency signal. Ideally, each mode of operation is activated and deactivated independent of the other modes, although two or more modes may be concurrently operational.

  19. Short range radio locator system

    DOE Patents [OSTI]

    McEwan, Thomas E.

    1996-01-01

    A radio location system comprises a wireless transmitter that outputs two megahertz period bursts of two gigahertz radar carrier signals. A receiver system determines the position of the transmitter by the relative arrival of the radar bursts at several component receivers set up to have a favorable geometry and each one having a known location. One receiver provides a synchronizing gating pulse to itself and all the other receivers to sample the ether for the radar pulse. The rate of the synchronizing gating pulse is slightly offset from the rate of the radar bursts themselves, so that each sample collects one finely-detailed piece of information about the time-of-flight of the radar pulse to each receiver each pulse period. Thousands of sequential pulse periods provide corresponding thousand of pieces of information about the time-of-flight of the radar pulse to each receiver, in expanded, not real time. Therefore the signal processing can be done with relatively low-frequency, inexpensive components. A conventional microcomputer is then used to find the position of the transmitter by geometric triangulation based on the relative time-of-flight information.

  20. Short range radio locator system

    DOE Patents [OSTI]

    McEwan, T.E.

    1996-12-31

    A radio location system comprises a wireless transmitter that outputs two megahertz period bursts of two gigahertz radar carrier signals. A receiver system determines the position of the transmitter by the relative arrival of the radar bursts at several component receivers set up to have a favorable geometry and each one having a known location. One receiver provides a synchronizing gating pulse to itself and all the other receivers. The rate of the synchronizing gating pulse is slightly offset from the rate of the radar bursts themselves, so that each sample collects one finely-detailed piece of information about the time-of-flight of the radar pulse to each receiver each pulse period. Thousands of sequential pulse periods provide corresponding thousand of pieces of information about the time-of-flight of the radar pulse to each receiver, in expanded, not real time. Therefore the signal processing can be done with relatively low-frequency, inexpensive components. A conventional microcomputer is then used to find the position of the transmitter by geometric triangulation based on the relative time-of-flight information. 5 figs.

  1. Integrally formed radio frequency quadrupole

    DOE Patents [OSTI]

    Abbott, Steven R.

    1989-01-01

    An improved radio frequency quadrupole (10) is provided having an elongate housing (11) with an elongate central axis (12) and top, bottom and two side walls (13a-d) symmetrically disposed about the axis, and vanes (14a-d) formed integrally with the walls (13a-d), the vanes (14a-d) each having a cross-section at right angles to the central axis (12) which tapers inwardly toward the axis to form electrode tips (15a-d) spaced from each other by predetermined distances. Each of the four walls (13a-d), and the vanes (14a-d) integral therewith, is a separate structural element having a central lengthwise plane (16) passing through the tip of the vane, the walls (13a-d) having flat mounting surfaces (17, 18) at right angles to and parallel to the control plane (16), respectively, which are butted together to position the walls and vane tips relative to each other.

  2. Radio frequency sustained ion energy

    DOE Patents [OSTI]

    Jassby, Daniel L.; Hooke, William M.

    1977-01-01

    Electromagnetic (E.M.) energy injection method and apparatus for producing and sustaining suprathermal ordered ions in a neutral, two-ion-species, toroidal, bulk equilibrium plasma. More particularly, the ions are produced and sustained in an ordered suprathermal state of existence above the average energy and velocity of the bulk equilibrium plasma by resonant rf energy injection in resonance with the natural frequency of one of the ion species. In one embodiment, the electromagnetic energy is injected to clamp the energy and velocity of one of the ion species so that the ion energy is increased, sustained, prolonged and continued in a suprathermal ordered state of existence containing appreciable stored energy that counteracts the slowing down effects of the bulk equilibrium plasma drag. Thus, selective deuteron absorption may be used for ion-tail creation by radio-frequency excitation alone. Also, the rf can be used to increase the fusion output of a two-component neutral injected plasma by selective heating of the injected deuterons.

  3. Secure Software-Defined Radio Project

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

    Software-Defined Radio Project Secure, versatile radio for "last mile" communications to utility distribution automation devices Background Communication to and from utility distribution automation devices provides greater system reliability and uptime, faster restoration, and more cost effective operations. However, many of these utility devices are located in remote locations, making secure communications difficult. Wired communication such as fiber optic cabling can be prohibitively

  4. Short-duration radio bursts with apparent extragalactic dispersion

    SciTech Connect (OSTI)

    Saint-Hilaire, P.; Benz, A. O.; Monstein, C.

    2014-11-01

    We present the results of the longest yet undertaken search for apparently extragalactic radio bursts at the Bleien Radio Observatory covering 21,000 hr (898 days). The data were searched for events of less than 50 ms FWHM duration showing a ?{sup 2} drift in the spectrogram characteristic of the delay of radio waves in plasma. We have found five cases suggesting dispersion measures between 350 and 400 cm{sup 3} pc while searching in the range of 75-2000 cm{sup 3} pc. Four of the five events occurred between 10:27 and 11:24 a.m. local civil time. The only exception occurred at night with the full Moon in the beam. It was an event that poorly fits plasma dispersion, but had the characteristics of a solar Type III burst. However, we were not able to confirm that it was a lunar reflection. All events were observed with a log-periodic dipole within 6800 hr, but none with a more directional horn antenna observing the rest of the time. These properties suggest a terrestrial origin of the 'peryton' type reported before. However, the cause of these events remains ambiguous.

  5. Interplanetary Radio Transmission Through Serial Ionospheric and Material Barriers

    SciTech Connect (OSTI)

    Fields, David; Kennedy, Robert G; Roy, Kenneth I; Vacaliuc, Bogdan

    2013-01-01

    A usual first principle in planning radio astronomy observations from the earth is that monitoring must be carried out well above the ionospheric plasma cutoff frequency (~5 MHz). Before space probes existed, radio astronomy was almost entirely done above 6 MHz, and this value is considered a practical lower limit by most radio astronomers. Furthermore, daytime ionization (especially D-layer formation) places additional constraints on wave propagation, and waves of frequency below 10-20 MHz suffer significant attenuation. More careful calculations of wave propagation through the earth s ionosphere suggest that for certain conditions (primarily the presence of a magnetic field) there may be a transmission window well below this assumed limit. Indeed, for receiving extraterrestrial radiation below the ionospheric plasma cutoff frequency, a choice of VLF frequency appears optimal to minimize loss. The calculation, experimental validation, and conclusions are presented here. This work demonstrates the possibility of VLF transmission through the ionosphere and various subsequent material barriers. Implications include development of a new robust communications channel, communications with submerged or subterranean receivers / instruments on or offworld, and a new approach to SETI.

  6. An Experiment Study of the Propagation of Radio Waves in a Scaled Model of Long-Wall Coal Mining Tunnels

    SciTech Connect (OSTI)

    Han, G.R.; Zhang, W.M.; Zhang, Y.P.

    2009-07-01

    A long-wall coal mining tunnel is the most important working area in a coal mine. It has long been realized that radio communications can improve both productivity and safety in this dangerous area. Hence, many attempts to use radio communications in such an environment have been made. Unfortunately, no radio system has satisfactorily provided communication services there, which, we believe, is partially due to poor understanding of the propagation characteristics of radio waves in the long-wall mining tunnel. To have deeper physical insight into the propagation problem, a scaled model of the long-wall mining tunnel was built, and the propagation characteristics of UHF radio waves were measured. The experiment and the measured results are presented and discussed.

  7. STORM IN A {sup T}EACUP{sup :} A RADIO-QUIET QUASAR WITH ≈10 kpc RADIO-EMITTING BUBBLES AND EXTREME GAS KINEMATICS

    SciTech Connect (OSTI)

    Harrison, C. M.; Thomson, A. P.; Alexander, D. M.; Edge, A. C.; Hogan, M. T.; Swinbank, A. M.; Bauer, F. E.; Mullaney, J. R.

    2015-02-10

    We present multi-frequency (1-8 GHz) Very Large Array data, combined with VIsible MultiObject Spectrograph integral field unit data and Hubble Space Telescope imaging, of a z = 0.085 radio-quiet type 2 quasar (with L {sub 1.4} {sub GHz} ≈ 5 × 10{sup 23} W Hz{sup –1} and L {sub AGN} ≈ 2 × 10{sup 45} erg s{sup –1}). Due to the morphology of its emission-line region, the target (J1430+1339) has been referred to as the ''Teacup'' active galactic nucleus (AGN) in the literature. We identify ''bubbles'' of radio emission that are extended ≈10-12 kpc to both the east and west of the nucleus. The edge of the brighter eastern bubble is co-spatial with an arc of luminous ionized gas. We also show that the ''Teacup'' AGN hosts a compact radio structure, located ≈0.8 kpc from the core position, at the base of the eastern bubble. This radio structure is co-spatial with an ionized outflow with an observed velocity of v = –740 km s{sup –1}. This is likely to correspond to a jet, or possibly a quasar wind, interacting with the interstellar medium at this position. The large-scale radio bubbles appear to be inflated by the central AGN, which indicates that the AGN can also interact with the gas on ≳ 10 kpc scales. Our study highlights that even when a quasar is formally ''radio-quiet'' the radio emission can be extremely effective for observing the effects of AGN feedback.

  8. CONSTRAINING THE EVOLUTIONARY FATE OF CENTRAL COMPACT OBJECTS: ''OLD'' RADIO PULSARS IN SUPERNOVA REMNANTS

    SciTech Connect (OSTI)

    Bogdanov, Slavko [Columbia Astrophysics Laboratory, Columbia University, 550 West 120th Street, New York, NY 10027 (United States); Ng, C.-Y. [Department of Physics, The University of Hong Kong, Pokfulam Road (Hong Kong); Kaspi, Victoria M., E-mail: slavko@astro.columbia.edu [Department of Physics, McGill University, 3600 University Street, Montreal, QC H3A 2T8 (Canada)

    2014-09-10

    Central compact objects (CCOs) constitute a population of radio-quiet, slowly spinning (?100ms) young neutron stars with anomalously high thermal X-ray luminosities. Their spin-down properties imply weak dipole magnetic fields (?10{sup 10-11}G) and characteristic ages much greater than the ages of their host supernova remnants (SNRs). However, CCOs may posses strong ''hidden'' internal magnetic fields that may re-emerge on timescales of ?10kyr, with the neutron star possibly activating as a radio pulsar in the process. This suggests that the immediate descendants of CCOs may be masquerading as slowly spinning ''old'' radio pulsars. We present an X-ray survey of all ordinary radio pulsars within 6kpc that are positionally coincident with Galactic SNRs in order to test the possible connection between the supposedly old but possibly very young pulsars and the SNRs. None of the targets exhibit anomalously high thermal X-ray luminosities, suggesting that they are genuine old ordinary pulsars unrelated to the superposed SNRs. This implies that CCOs are either latent radio pulsars that activate long after their SNRs dissipate or they remain permanently radio-quiet. The true descendants of CCOs remain at large.

  9. A search for fast radio bursts associated with gamma-ray bursts

    SciTech Connect (OSTI)

    Palaniswamy, Divya; Wayth, Randall B.; Trott, Cathryn M.; Tingay, Steven J.; Reynolds, Cormac [International Centre for Radio Astronomy Research, Curtin University, Bentley, WA 6102 (United States); McCallum, Jamie N., E-mail: divya.palaniswamy@postgrad.curtin.edu.au [University of Tasmania, Hobart, Tasmania, 7001 (Australia)

    2014-07-20

    The detection of seven fast radio bursts (FRBs) has recently been reported. FRBs are short duration (?1 ms), highly dispersed radio pulses from astronomical sources. The physical interpretation for the FRBs remains unclear but is thought to involve highly compact objects at cosmological distance. It has been suggested that a fraction of FRBs could be physically associated with gamma-ray bursts (GRBs). Recent radio observations of GRBs have reported the detection of two highly dispersed short duration radio pulses using a 12 m radio telescope at 1.4 GHz. Motivated by this result, we have performed a systematic and sensitive search for FRBs associated with GRBs. We have observed five GRBs at 2.3 GHz using a 26 m radio telescope located at the Mount Pleasant Radio Observatory, Hobart. The radio telescope was automated to rapidly respond to Gamma-ray Coordination Network notifications from the Swift satellite and slew to the GRB position within ?140 s. The data were searched for pulses up to 5000 pc cm{sup 3} in dispersion measure and pulse widths ranging from 640 ?s to 25.60 ms. We did not detect any events ?6?. An in depth statistical analysis of our data shows that events detected above 5? are consistent with thermal noise fluctuations only. A joint analysis of our data with previous experiments shows that previously claimed detections of FRBs from GRBs are unlikely to be astrophysical. Our results are in line with the lack of consistency noted between the recently presented FRB event rates and GRB event rates.

  10. Making your presentation fun: creative presentation techniques

    SciTech Connect (OSTI)

    KEENEN,MARTHA JANE

    2000-05-18

    What possesses someone to volunteer and go through hoops and red tape to make a presentation at a conference? For that matter, why does anyone ever present anything to anyone? Actually, presentations are a fact of life and there are many reasons for doing a presentation and doing it well. New and existing staff need training and orientation to the way things are done here. Handing all of them a manual and hoping they read it is pretty much a waste of paper. On the other hand, an effective, entertaining and upbeat presentation on the relevant topics is more likely to stick with those people. They will even have a name and face to remember and seek out when they have an issue on or with that topic. This can be a very effective beginning for networking with new peers. The presenter is seen as knowledgeable, as a source of information on company topics and possibly evaluated as a potential mentor or future manager. Project staff and/or peers benefit from clear, concise, presentations of topical knowledge. This is one way that a group working on various aspects of the same project or program can stay in touch and in step with each other. Most importantly, presentations may be the best or only door into the minds (and budgets) of management and customers. These presentations are a wonderful opportunity to address legal and compliance issues, budget, staffing, and services. Here is a chance, maybe the only one, to demonstrate and explain the wonderfulness of a program and the benefit they get by using the services offered most effectively. An interactive presentation on legal and compliance issues can be an effective tool in helping customers and/or management make good risk management decisions.

  11. Resolved multifrequency radio observations of GG Tau

    SciTech Connect (OSTI)

    Andrews, Sean M.; Birnstiel, T.; Rosenfeld, K. A.; Wilner, D. J.; Chandler, Claire J.; Pérez, L. M.; Isella, Andrea; Ricci, L.; Carpenter, J. M.; Calvet, N.; Corder, S. A.; Deller, A. T.; Dullemond, C. P.; Greaves, J. S.; Harris, R. J.; Henning, Th.; Linz, H.; Kwon, W.; Lazio, J.; Mundy, L. G.; and others

    2014-06-01

    We present subarcsecond resolution observations of continuum emission associated with the GG Tau quadruple star system at wavelengths of 1.3, 2.8, 7.3, and 50 mm. These data confirm that the GG Tau A binary is encircled by a circumbinary ring at a radius of 235 AU with a FWHM width of ∼60 AU. We find no clear evidence for a radial gradient in the spectral shape of the ring, suggesting that the particle size distribution is spatially homogeneous on angular scales ≳0.''1. A central point source, likely associated with the primary component (GG Tau Aa), exhibits a composite spectrum from dust and free-free emission. Faint emission at 7.3 mm is observed toward the low-mass star GG Tau Ba, although its origin remains uncertain. Using these measurements of the resolved, multifrequency emission structure of the GG Tau A system, models of the far-infrared to radio spectrum are developed to place constraints on the grain size distribution and dust mass in the circumbinary ring. The non-negligible curvature present in the ring spectrum implies a maximum particle size of 1-10 mm, although we are unable to place strong constraints on the distribution shape. The corresponding dust mass is 30-300 M {sub ⊕}, at a temperature of 20-30 K. We discuss how this significant concentration of relatively large particles in a narrow ring at a large radius might be produced in a local region of higher gas pressures (i.e., a particle 'trap') located near the inner edge of the circumbinary disk.

  12. Cognitive Radio will revolutionize American transportation

    ScienceCinema (OSTI)

    None

    2013-12-06

    Cognitive Radio will revolutionize American transportation. Through smart technology, it will anticipate user needs; detect available bandwidths and frequencies then seamlessly connect vehicles, infrastructures, and consumer devices; and it will support the Department of Transportation IntelliDrive Program, helping researchers, auto manufacturers, and Federal and State officials advance the connectivity of US transportation systems for improved safety, mobility, and environmental conditions. Using cognitive radio, a commercial vehicle will know its driver, onboard freight and destination route. Drivers will save time and resources communicating with automatic toll booths and know ahead of time whether to stop at a weigh station or keep rolling. At accident scenes, cognitive radio sensors on freight and transportation modes can alert emergency personnel and measure on-site, real-time conditions such as a chemical leak. The sensors will connect freight to industry, relaying shipment conditions and new delivery schedules. For industry or military purposes, cognitive radio will enable real-time freight tracking around the globe and its sensory technology can help prevent cargo theft or tampering by alerting shipper and receiver if freight is tampered with while en route. For the average consumer, a vehicle will tailor the transportation experience to the passenger such as delivering age-appropriate movies via satellite. Cognitive radio will enhance transportation safety by continually sensing what is important to the user adapting to its environment and incoming information, and proposing solutions that improve mobility and quality of life.

  13. Simultaneous effects of photo- and radio- darkening in ytterbium-doped aluminosilicate fibers

    SciTech Connect (OSTI)

    Duchez, Jean-Bernard Mady, Franck Mebrouk, Yasmine Benabdesselam, Mourad

    2014-10-21

    We present original characterizations of photo-radio-darkening in ytterbium-doped silica optical fibers submitted to the simultaneous action of the pump and of an ionizing radiation. We present the interplay between both radiations, showing e.g. that the pump is able to darken or bleach the fiber depending on the ionizing dose. The photo-resistance of the fiber is shown to play a crucial role on its radio-resistance, and that photo-resistant fibers should be also radio-resistant in low dose rate conditions. All the results are thoroughly explained by a physical model presented in a separate article by Mady et al. (this conference proceeding)

  14. The search for extended air showers at the Jicamarca Radio Observatory

    SciTech Connect (OSTI)

    Wahl, D.; Chau, J.; Galindo, F.; Huaman, A.; Solano, C. J.

    2009-04-30

    This paper presents the status of the project to detect extended air showers at the Jicamarca Radio Observatory. We report on detected anomalous signals and present a toy model to estimate at what altitudes we might expect to see air shower signals. According to this model, a significant number of high altitude horizontal air showers could be observed by radar techniques.

  15. Radio Pumping of Ionospheric Plasma with Orbital Angular Momentum

    SciTech Connect (OSTI)

    Leyser, T. B.; Norin, L.; McCarrick, M.; Pedersen, T. R.; Gustavsson, B.

    2009-02-13

    Experimental results are presented of pumping ionospheric plasma with a radio wave carrying orbital angular momentum (OAM), using the High Frequency Active Auroral Research Program (HAARP) facility in Alaska. Optical emissions from the pumped plasma turbulence exhibit the characteristic ring-shaped morphology when the pump beam carries OAM. Features of stimulated electromagnetic emissions (SEE) that are attributed to cascading Langmuir turbulence are well developed for a regular beam but are significantly weaker for a ring-shaped OAM beam in which case upper hybrid turbulence dominates the SEE.

  16. DETECTION OF FAST TRANSIENTS WITH RADIO INTERFEROMETRIC ARRAYS

    SciTech Connect (OSTI)

    Bhat, N. D. R.; Chengalur, J. N.; Gupta, Y.; Prasad, J.; Roy, J.; Kudale, S. S.; Cox, P. J.; Bailes, M.; Burke-Spolaor, S.; Van Straten, W.

    2013-05-01

    Next-generation radio arrays, including the Square Kilometre Array (SKA) and its pathfinders, will open up new avenues for exciting transient science at radio wavelengths. Their innovative designs, comprising a large number of small elements, pose several challenges in digital processing and optimal observing strategies. The Giant Metre-wave Radio Telescope (GMRT) presents an excellent test-bed for developing and validating suitable observing modes and strategies for transient experiments with future arrays. Here we describe the first phase of the ongoing development of a transient detection system for GMRT that is planned to eventually function in a commensal mode with other observing programs. It capitalizes on the GMRT's interferometric and sub-array capabilities, and the versatility of a new software backend. We outline considerations in the plan and design of transient exploration programs with interferometric arrays, and describe a pilot survey that was undertaken to aid in the development of algorithms and associated analysis software. This survey was conducted at 325 and 610 MHz, and covered 360 deg{sup 2} of the sky with short dwell times. It provides large volumes of real data that can be used to test the efficacies of various algorithms and observing strategies applicable for transient detection. We present examples that illustrate the methodologies of detecting short-duration transients, including the use of sub-arrays for higher resilience to spurious events of terrestrial origin, localization of candidate events via imaging, and the use of a phased array for improved signal detection and confirmation. In addition to demonstrating applications of interferometric arrays for fast transient exploration, our efforts mark important steps in the roadmap toward SKA-era science.

  17. SG Testimony for March

    Office of Environmental Management (EM)

    ... Currently AMI comprises about 4.7% of all electric meters and their use for demand response is growing. Approximately 52 million meters are projected to be installed by 2012. As ...

  18. FE Speeches and Testimony

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

    ...

  19. Pat Hoffman Testimony

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

    PATRICIA HOFFMAN ACTING ASSISTANT SECRETARY FOR ELECTRICITY DELIVERY AND ENERGY RELIABILITY U.S. DEPARTMENT OF ENERGY BEFORE THE COMMITTEE ON ENERGY AND NATURAL RESOURCES U.S. SENATE MAY 7, 2009 Mr. Chairman and members of the Committee, thank you for this opportunity to testify before you on the cyber security issues facing the electric industry and on emergency authorities to protect critical electric infrastructure. All of us here today share a common concern that vulnerabilities exist

  20. Microwave and Radio Frequency Workshop | Department of Energy

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

    Workshops » Microwave and Radio Frequency Workshop Microwave and Radio Frequency Workshop July 25, 2012 At the Microwave and Radio Frequency Workshop (held in Long Beach, CA, on July 25, 2012), academic and industry experts discussed the existing and emerging electrotechnologies - such as microwave (MW) and radio frequency (RF) energy - and their potential to impact advanced manufacturing. Exploiting the material interactions of MW and RF energy is a route to developing energy-saving process

  1. ERAD 2014 Presentations

    Broader source: Energy.gov [DOE]

    2014 ENVIRONMENTAL/RADIOLOGICAL ASSISTANCE DIRECTORY (ERAD) PRESENTATIONS Below are the presentations presented during the 2014 Environmental/Radiological Assistance Directory (ERAD) meetings: Visual Sample Plan (VSP), DOECAP, Radiological and Environmental Sciences Laboratory (RESL) MAPEP

  2. Microwave (MW) and Radio Frequency (RF) as Enabling Technologies for

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

    Advanced Manufacturing | Department of Energy Microwave (MW) and Radio Frequency (RF) as Enabling Technologies for Advanced Manufacturing Microwave (MW) and Radio Frequency (RF) as Enabling Technologies for Advanced Manufacturing mw_rf_workshop_background_july2012.pdf (178.12 KB) More Documents & Publications Microwave and Radio Frequency Workshop

  3. Solar Webinar Presentation Slides

    Office of Energy Efficiency and Renewable Energy (EERE)

    Download presentation slides from the DOE Office of Indian Energy Webinar on solar renewable energy.

  4. Biomass Webinar Presentation Slides

    Office of Energy Efficiency and Renewable Energy (EERE)

    Download presentation slides for the DOE Office of Indian Energy webinar on biomass renewable energy.

  5. STEP Partner Presentation

    Broader source: Energy.gov [DOE]

    STEP Partner Presentation, from the Tool Kit Framework: Small Town University Energy Program (STEP).

  6. STEP Conference Presentation

    Broader source: Energy.gov [DOE]

    STEP Conference Presentation, from the Tool Kit Framework: Small Town University Energy Program (STEP).

  7. Presentations | Department of Energy

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

    Information Resources » Presentations Presentations Energy Department presentations allow stakeholders to learn and engage around innovative technology development. Source: Geothermal Resources Council Energy Department presentations allow stakeholders to learn and engage around innovative technology development. Source: Geothermal Resources Council Douglas Hollett, former office director for the Geothermal Technologies Office, addresses over 1,000 during his keynote address at the annual

  8. Poster Presentation Purpose

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

    Presentation Purpose The primary purpose of the poster presentation is to provide an opportunity to communicate the results of research and to initiate discussion among science colleagues. Because poster presentations are usually done in groups, with observers milling around a large room of posters, the presentations are relaxed and more conducive to the exchange of ideas and techniques between presenters and observers. The Poster A good poster is uncluttered and clear in design. It has legible

  9. ON THE CONNECTION BETWEEN GIANT RADIO HALOS AND CLUSTER MERGERS

    SciTech Connect (OSTI)

    Cassano, R.; Giacintucci, S.; Brunetti, G.; Venturi, T.

    2010-10-01

    The frequently observed association between giant radio halos (RHs) and merging galaxy clusters has driven present theoretical models of non-thermal emission from galaxy clusters, which are based on the idea that the energy dissipated during cluster-cluster mergers could power the formation of RHs. To quantitatively test the merger-halo connection, we present the first statistical study based on deep radio data and X-ray observations of a complete X-ray-selected sample of galaxy clusters with X-ray luminosity {>=}5 x 10{sup 44} erg s{sup -1} and redshift 0.2 {<=} z {<=} 0.32. Using several methods to characterize cluster substructures, namely, the power ratios, centroid shift, and X-ray brightness concentration parameter, we show that clusters with and without RH can be quantitatively differentiated in terms of their dynamical properties. In particular, we confirm that RHs are associated with dynamically disturbed clusters and clusters without RH are more 'relaxed', with only a couple of exceptions where a disturbed cluster does not exhibit a halo.

  10. Final report for the Chautauqua Radio Workshop Project. July 1, 1980-October 30, 1981

    SciTech Connect (OSTI)

    Renz, B.

    1982-01-25

    Energy conservation education must reach millions of Americans in order to see any real and immediate decrease in energy consumption. Since our society gets much of its information from the media, this seems like a most effective vehicle for disseminating energy conservation information to the American Public. Radio is listened to by the vast majority of Americans each day of their lives. Radio as a communications medium is an extremely cost effective method of mass communication and education, and is perceived as a personal medium which has great potential to affect a change in the daily energy consumption habits of the public. Call-in radio programs centering around energy conservation are an effective method of presenting informative, energy education programming that provide instantaneous access for listener/consumer participation. The linking of available telephone and radio technology (via call-in radio shows) allows people all over the US, including remote rural areas, access to the latest energy conservation information and renewable energy technolgy.

  11. Degree of polarization and source counts of faint radio sources from Stacking Polarized intensity

    SciTech Connect (OSTI)

    Stil, J. M.; George, S. J.; Keller, B. W.; Taylor, A. R.

    2014-06-01

    We present stacking polarized intensity as a means to study the polarization of sources that are too faint to be detected individually in surveys of polarized radio sources. Stacking offers not only high sensitivity to the median signal of a class of radio sources, but also avoids a detection threshold in polarized intensity, and therefore an arbitrary exclusion of sources with a low percentage of polarization. Correction for polarization bias is done through a Monte Carlo analysis and tested on a simulated survey. We show that the nonlinear relation between the real polarized signal and the detected signal requires knowledge of the shape of the distribution of fractional polarization, which we constrain using the ratio of the upper quartile to the lower quartile of the distribution of stacked polarized intensities. Stacking polarized intensity for NRAO VLA Sky Survey (NVSS) sources down to the detection limit in Stokes I, we find a gradual increase in median fractional polarization that is consistent with a trend that was noticed before for bright NVSS sources, but is much more gradual than found by previous deep surveys of radio polarization. Consequently, the polarized radio source counts derived from our stacking experiment predict fewer polarized radio sources for future surveys with the Square Kilometre Array and its pathfinders.

  12. COLLOQUIUM: Type II Solar Radio Bursts: From Fundamental Plasma Physics to

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

    Space Weather Research | Princeton Plasma Physics Lab April 8, 2015, 4:15pm to 5:30pm Colloquia MBG Auditorium COLLOQUIUM: Type II Solar Radio Bursts: From Fundamental Plasma Physics to Space Weather Research Professor Iver Cairns University of Sydney - School of Physics Presentation: File WC08APR2015_ICairns_4.pptx For over 60 years type II solar radio bursts have defied detailed quantitative explanation, despite their promise for predicting space weather at Earth and their status as the

  13. OPTICAL SPECTRA OF CANDIDATE SOUTHERN HEMISPHERE INTERNATIONAL CELESTIAL REFERENCE FRAME (ICRF) RADIO SOURCES

    SciTech Connect (OSTI)

    Titov, O.; Jauncey, D. L.; Johnston, H. M.; Hunstead, R. W.; Christensen, L.

    2011-11-15

    We present the results of spectroscopic observations of the optical counterparts of 47 southern radio sources from the candidate International Celestial Reference Catalogue as part of a very long baseline interferometry (VLBI) program to strengthen the celestial reference frame, especially in the south. We made the observations with the 3.58 m European Southern Observatory New Technology Telescope. We obtained redshifts for 30 quasars and one radio galaxy, with a further seven objects being probable BL Lac objects with featureless spectra. Of the remainder, four were clear misidentifications with Galactic stars and five had low signal-to-noise spectra and could not be classified. These results, in combination with new VLBI data of the radio sources with redshifts more than 2, add significantly to the existing data needed to refine the distribution of source proper motions over the celestial sphere.

  14. Discovery of a z = 6.1 Radio-Loud Quasar in the NDWFS

    SciTech Connect (OSTI)

    McGreer, I D; Becker, R H; Helfand, D J; White, R L

    2006-07-24

    From examination of only 4 deg{sup 2} of sky in the NOAO Deep Wide-Field Survey (NDWFS) region, we have identified the first radio-loud quasar at a redshift z > 6. The object, FIRST J1427385+331241, was discovered by matching the FLAMEX IR survey to FIRST survey radio sources with NDWFS counterparts. One candidate z > 6 quasar was found, and spectroscopy with the Keck II telescope confirmed its identification, yielding a redshift z = 6.12. The object is a Broad Absorption Line (BAL) quasar with an optical luminosity of M{sub B} {approx} -26.9 and a radio-to-optical flux ratio {approx} 60. Two Mg II absorptions systems are present at redshifts of z = 2.18 and z = 2.20. We briefly discuss the implications of this discovery for the high-redshift quasar population.

  15. Workplace Charging Presentation

    Broader source: Energy.gov [DOE]

    Educate employers about plug-in electric vehicles and workplace charging using this sample presentation. The presentation covers the basics of PEVs and workplace charging as well as the benefit of...

  16. User Data Forum Presentations

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

    Presentations User Data Forum Presentations Sort by: Default | Name | Date (low-high) | ... M02: The Future of Data and Scientific Workflow June 16, 2014 | Author(s): Michael Wilde, ...

  17. Senior Debt Fastball Presentation

    Broader source: Energy.gov [DOE]

    Plenary III: Project Finance and Investment Senior Debt Fastball Presentation Phillip Thomas, Senior Vice President of Commercial Lending, Heartland Bank

  18. Tritium 2013 Presentation

    Broader source: Energy.gov [DOE]

    Presentation from the 32nd Tritium Focus Group Meeting held in Germantown, Maryland on April 23-25, 2013.

  19. Renewable Energy 101 (Presentation)

    SciTech Connect (OSTI)

    Walker, A.

    2012-03-01

    Presentation given at the 2012 Department of Homeland Security Renewable Energy Roundtable as an introduction to renewable technologies and applications.

  20. Capacitively Coupled Radio Frequency Discharge Plasmas In Hydrogen: Particle Modeling and Negative Ion Kinetics

    SciTech Connect (OSTI)

    Diomede, P.; Longo, S.; Capitelli, M.

    2005-05-16

    We present a 1D(r)2D(v) particle code for capacitively coupled radio frequency discharge plasmas in hydrogen, which includes a rigorous kinetic modeling of ion transport and several solutions to speed up the convergence. In a test case the effect of surface atom recombination and molecule vibrational deactivation on H- concentration is investigated.

  1. Renewable Electricity Futures (Presentation)

    SciTech Connect (OSTI)

    Mai, T.

    2012-08-01

    This presentation summarizes findings of NREL's Renewable Electricity Futures study, published in June 2012. RE Futures investigated the challenges and impacts of achieving very high renewable electricity generation levels in the contiguous United States by 2050. This presentation was presented in a Wind Powering America webinar on August 15, 2012 and is now available through the Wind Powering America website.

  2. ILLUMINATING THE DARKEST GAMMA-RAY BURSTS WITH RADIO OBSERVATIONS

    SciTech Connect (OSTI)

    Zauderer, B. A.; Berger, E.; Margutti, R.; Fong, W.; Laskar, T.; Chornock, R.; Soderberg, A. M. [Department of Astronomy, Harvard University, Cambridge, MA 02138 (United States); Levan, A. J. [Department of Physics, University of Warwick, Coventry CV4 7AL (United Kingdom); Olivares E, F.; Greiner, J. [Max-Planck-Institut fuer extraterrestrische Physik, Giessenbachstrasse, D-85748 Garching (Germany); Perley, D. A.; Horesh, A.; Carpenter, J. [Division of Physics, Mathematics and Astronomy, California Institute of Technology, Pasadena, CA 91225 (United States); Updike, A. C. [Department of Chemistry and Physics, Roger Williams University, Bristol, RI 02809 (United States); Tanvir, N. R. [Department of Physics and Astronomy, University of Leicester, Leicester LE1 7RH (United Kingdom); Menten, K. M. [Max-Planck-Institut fuer Radioastronomie, D-53121 Bonn (Germany); Nakar, E. [Department of Astrophysics, Sackler School of Physics and Astronomy, Tel Aviv University, 69978 Tel Aviv (Israel); Chandra, P. [National Centre for Radio Astrophysics, Tata Institute of Fundamental Research, Pune University Campus, Ganeshkhind, Pune 411007 (India); Castro-Tirado, A. J. [Instituto de Astrofisica de Andalucia (IAA-CSIC), P.O. Box 03004, E-18080 Granada (Spain); Bremer, M. [Institut de Radioastronomie Millimetrique, 300 rue de la Piscine, F-38406 Saint Martin d'Heres (France); and others

    2013-04-20

    We present X-ray, optical, near-infrared (IR), and radio observations of gamma-ray bursts (GRBs) 110709B and 111215A, as well as optical and near-IR observations of their host galaxies. The combination of X-ray detections and deep optical/near-IR limits establish both bursts as ''dark''. Sub-arcsecond positions enabled by radio detections lead to robust host galaxy associations, with optical detections that indicate z {approx}< 4 (110709B) and z Almost-Equal-To 1.8-2.9 (111215A). We therefore conclude that both bursts are dark due to substantial rest-frame extinction. Using the radio and X-ray data for each burst we find that GRB 110709B requires A{sub V}{sup host}{approx}>5.3 mag and GRB 111215A requires A{sub V}{sup host}{approx}>8.5 mag (assuming z = 2). These are among the largest extinction values inferred for dark bursts to date. The two bursts also exhibit large neutral hydrogen column densities of N{sub H,{sub int}} {approx}> 10{sup 22} cm{sup -2} (z = 2) as inferred from their X-ray spectra, in agreement with the trend for dark GRBs. Moreover, the inferred values are in agreement with the Galactic A{sub V} -N{sub H} relation, unlike the bulk of the GRB population. Finally, we find that for both bursts the afterglow emission is best explained by a collimated outflow with a total beaming-corrected energy of E{sub {gamma}} + E{sub K} Almost-Equal-To (7-9) Multiplication-Sign 10{sup 51} erg (z = 2) expanding into a wind medium with a high density, M Almost-Equal-To (6-20) Multiplication-Sign 10{sup -5} M{sub Sun} yr{sup -1} (n Almost-Equal-To 100-350 cm{sup -3} at Almost-Equal-To 10{sup 17} cm). While the energy release is typical of long GRBs, the inferred density may be indicative of larger mass-loss rates for GRB progenitors in dusty (and hence metal rich) environments. This study establishes the critical role of radio observations in demonstrating the origin and properties of dark GRBs. Observations with the JVLA and ALMA will provide a sample with sub

  3. Passive radio frequency peak power multiplier

    DOE Patents [OSTI]

    Farkas, Zoltan D.; Wilson, Perry B.

    1977-01-01

    Peak power multiplication of a radio frequency source by simultaneous charging of two high-Q resonant microwave cavities by applying the source output through a directional coupler to the cavities and then reversing the phase of the source power to the coupler, thereby permitting the power in the cavities to simultaneously discharge through the coupler to the load in combination with power from the source to apply a peak power to the load that is a multiplication of the source peak power.

  4. Hermetic aluminum radio frequency interconnection and method for making

    DOE Patents [OSTI]

    Kilgo, Riley D.; Kovacic, Larry; Brow, Richard K.

    2000-01-01

    The present invention provides a light-weight, hermetic coaxial radio-frequency (RF) interconnection having an electrically conductive outer housing made of aluminum or an aluminum alloy, a central electrical conductor made of ferrous or non-ferrous material, and a cylinder of dielectric material comprising a low-melting-temperature, high-thermal-expansion aluminophosphate glass composition for hermetically sealing between the aluminum-alloy outer housing and the ferrous or non-ferrous center conductor. The entire RF interconnection assembly is made permanently hermetic by thermally fusing the center conductor, glass, and housing concurrently by bringing the glass to the melt point by way of exposure to an atmospheric temperature sufficient to melt the glass, less than 540.degree. C., but that does not melt the center conductor or the outer aluminum or aluminum alloy housing. The composition of the glass used is controlled to provide a suitable low dielectric constant so that an appropriate electrical characteristic impedance, for example 50 ohms, can be achieved for an electrical interconnection that performs well at high radio frequencies and also provides an interconnection maintaining a relatively small physical size.

  5. ARM - LASSO Presentations

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

    Presentations LASSO Information LASSO Home LASSO Backgrounder Pilot Phase Begins for Routine Large-Eddy Simulations Pilot Project Timeline Presentations News Science LASSO Implementation Strategy LASSO Pilot Project Releases Related Information ARM Decadal Vision Archive of LASSO Information e-mail list Contacts William Gustafson, Lead Principal Investigator Andrew Vogelmann, Co-Principal Investigator Hanna Goss, Media Contact LASSO Presentations 17th Annual WRF Users' Workshop, July 28, 2016

  6. Science Highlights Presentations

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

    Highlights Presentations Science Highlights Presentations NERSC collects highlights of recent scientific work carried out by its users. If you are a user and have work that you would like us to highlight please send e-mail to consult@nersc.gov. In the list below, names of researchers who did the work appear in brackets. June 2016 Presentation [PDF] Better Materials for Quantum Computing [Govoni, Galli (University of Chicago), Nature Scientific Reports, Vol. 6, No. 20803, Feb. 16, 2016] [BES]

  7. Meeting Notes and Presentations

    Office of Environmental Management (EM)

    Corporate Board Notes and Slides Notes from EM Corporate QA Board Tele-Conference - February 22, 2010 1 of 2 General: Attendance of voting board members was documented. All members were present or had a representative present on the call. Previous 5 Focus Areas: Dave Tuttel presented the proposed closeout of the previous 5 focus areas for the EM Corporate Board. * Focus Area 1 (Requirements Flow Down) - Board voted to close the focus area (unanimous) * Focus Area 2 (Adequate NQA-1 Suppliers) -

  8. PowerPoint Presentation

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

    1: Oct 15, 2014 Antonio M. Bouza Technology Manager, Emerging Technologies Building Technologies Office 2 None of the information presented here is legally binding. The content included in this presentation is intended only to summarize the contents of funding opportunity DE-FOA-0001166. Any content within this presentation that appears inconsistent from the FOA language is superseded by the FOA language. All Applicants are strongly encouraged to carefully read the FOA guidelines and adhere to

  9. Budget Presentations - Hanford Site

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

    Budget Presentations Hanford Site Budget Budget Presentations Budget Presentations Email Email Page | Print Print Page | Text Increase Font Size Decrease Font Size Each year the Office of River Protection and Richland Operations Office are required to prepare an annual budget submittal that is consistent with the Hanford Federal Facility Agreement and Consent Order, also known as the Tri-Party Agreement (TPA), and meets regulatory requirements. The TPA is the regulatory framework between DOE,

  10. PHYSICAL CONSTRAINTS ON FAST RADIO BURSTS

    SciTech Connect (OSTI)

    Luan, Jing; Goldreich, Peter

    2014-04-20

    Fast radio bursts (FRBs) are isolated, ms radio pulses with dispersion measure (DM) of order 10{sup 3} pc cm{sup 3}. Galactic candidates for the DM of high latitude bursts detected at GHz frequencies are easily dismissed. DM from bursts emitted in stellar coronas are limited by free-free absorption and those from H II regions are bounded by the nondetection of associated free-free emission at radio wavelengths. Thus, if astronomical, FRBs are probably extragalactic. FRB 110220 has a scattering tail of ?5.6 0.1 ms. If the electron density fluctuations arise from a turbulent cascade, the scattering is unlikely to be due to propagation through the diffuse intergalactic plasma. A more plausible explanation is that this burst sits in the central region of its host galaxy. Pulse durations of order ms constrain the sizes of FRB sources implying high brightness temperatures that indicates coherent emission. Electric fields near FRBs at cosmological distances would be so strong that they could accelerate free electrons from rest to relativistic energies in a single wave period.

  11. Energy Exchange Presentations

    Broader source: Energy.gov [DOE]

    Presentations from Energy Exchange, a two-and-a-half day training scheduled for August 11-13, 2015, at the Phoenix Convention Center in Phoenix, Arizona.

  12. PowerPoint Presentation

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

    STEM Volunteer Training: Volunteer Opportunities April 14, 2016 Names of Presenters Megan Davis Program Manager TechBridge Rabiah Mayas, Ph.D. Director of Science and Integrated ...

  13. Presentations for Industry

    Office of Energy Efficiency and Renewable Energy (EERE)

    Learn energy-saving strategies from leading manufacturing companies and energy experts. The presentations are organized below by topic area. In addition, industrial energy managers, utilities, and...

  14. PowerPoint Presentation

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

    Dr. Isabelle Wheeler, Program Manager Tank Farm Projects - Waste Feed Delivery Systems Provision of a Tank Waste Characterization and Staging Capability at Hanford Presentation:...

  15. Meeting Notes and Presentations

    Office of Environmental Management (EM)

    Tele-Conference - February 22, 2010 2 of 2 Approach for Remaining Focus Areas: Robert Murray presented a proposed approach to divide the remaining focus areas into three...

  16. Science Highlights Presentations

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

    ... 1579-1600, 2015 BER Polarized Laser Pulses Could Change Nature of Graphene T. ... Presentation PDF Modelling Aids Radiation Damage Studies R. Devanathan, Pacific ...

  17. PowerPoint Presentation

    Office of Environmental Management (EM)

    Ground Water Issues Presentation for DOE Tritium Focus Group May 5-6, 2015 Steven M. ... * Industry initiated a voluntary ground water monitoring program * NRC is monitoring the ...

  18. Meeting and Presentation Materials

    Office of Environmental Management (EM)

    ... our construction projects to present forecasting and procurement opportunities to the ... will reduce supplier confusion; reduce costs for supplier compliance; increase supplier ...

  19. Renewable Hydrogen (Presentation)

    SciTech Connect (OSTI)

    Remick, R. J.

    2009-11-16

    Presentation about the United State's dependence on oil, how energy solutions are challenging, and why hydrogen should be considered as a long-term alternative for transportation fuel.

  20. PowerPoint Presentation

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

    State Climate and Energy Planning 2 About this Presentation ... - Energy efficiency resource standard (EERS) - ... On the Horizon * Enterprise scaling, allowing for multiple ...

  1. Renewable Electricity Futures (Presentation)

    SciTech Connect (OSTI)

    Hand, M.; Mai, T.

    2012-08-01

    This presentation library summarizes findings of NREL's Renewable Electricity Futures study, published in June 2012. RE Futures investigated the challenges and impacts of achieving very high renewable electricity generation levels in the contiguous United States by 2050. It was presented in an Union of Concerned Scientists webinar on June 12, 2012.

  2. Renewable Electricity Futures (Presentation)

    SciTech Connect (OSTI)

    Hand, M. M.

    2012-08-01

    This presentation library summarizes findings of NREL's Renewable Electricity Futures study, published in June 2012. RE Futures investigated the challenges and impacts of achieving very high renewable electricity generation levels in the contiguous United States by 2050. It was presented in a webinar given by the California Energy Commission.

  3. Renewable Electricity Futures (Presentation)

    SciTech Connect (OSTI)

    Mai, T.

    2012-08-01

    This presentation summarizes findings of NREL's Renewable Electricity Futures study, published in June 2012. RE Futures investigated the challenges and impacts of achieving very high renewable electricity generation levels in the contiguous United States by 2050. It was presented in a Power Systems Engineering Research Center webinar on September 4, 2012.

  4. Renewable Electricity Futures (Presentation)

    SciTech Connect (OSTI)

    Hand, M.

    2012-10-01

    This presentation library summarizes findings of NREL's Renewable Electricity Futures study, published in June 2012. RE Futures investigated the challenges and impacts of achieving very high renewable electricity generation levels in the contiguous United States by 2050. It is being presented at the Utility Variable-Generation Integration Group Fall Technical Workshop on October 24, 2012.

  5. Control the Present

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

    Control the Present Image of water sampling trip embarking downstream from Otowi Bridge onto the Rio Grande with text overlay of 'How does LANL minimize the impacts from ongoing activities?' Control the Present Home Integrating Environmental Stewardship Something in the air? Protections: Sediment Protections: Sampling

  6. On the Radio and Optical Luminosity Evolution of Quasars

    SciTech Connect (OSTI)

    Singal, J.; Petrosian, V.; Lawrence, A.; Stawarz, L.; /JAXA, Sagamihara /Jagiellonian U., Astron. Observ.

    2011-05-20

    We calculate simultaneously the radio and optical luminosity evolutions of quasars, and the distribution in radio loudness R defined as the ratio of radio and optical luminosities, using a flux limited data set containing 636 quasars with radio and optical fluxes from White et al. We first note that when dealing with multivariate data it is imperative to first determine the true correlations among the variables, not those introduced by the observational selection effects, before obtaining the individual distributions of the variables. We use the methods developed by Efron and Petrosian which are designed to obtain unbiased correlations, distributions, and evolution with redshift from a data set truncated due to observational biases. It is found that as expected the population of quasars exhibits strong positive correlation between the radio and optical luminosities and that this correlation deviates from a simple linear relation in a way indicating that more luminous quasars are more radio loud. We also find that there is a strong luminosity evolution with redshift in both wavebands, with significantly higher radio than optical evolution. We conclude that the luminosity evolution obtained by arbitrarily separating the sources into radio loud (R > 10) and radio quiet (R < 10) populations introduces significant biases that skew the result considerably. We also construct the local radio and optical luminosity functions and the density evolution. Finally, we consider the distribution of the radio loudness parameter R obtained from careful treatment of the selection effects and luminosity evolutions with that obtained from the raw data without such considerations. We find a significant difference between the two distributions and no clear sign of bi-modality in the true distribution. Our results indicate therefore, somewhat surprisingly, that there is no critical switch in the efficiency of the production of disk outflows/jets between very radio quiet and very radio

  7. Publications and Presentations

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

    News & Publications » Publications and Presentations News & Publications ESnet News 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 Publications and Presentations Sort by: Date

  8. Renewable Electricity Futures (Presentation)

    SciTech Connect (OSTI)

    Hand, M. M.

    2012-09-01

    This presentation summarizes findings of NREL's Renewable Electricity Futures study, published in June 2012. RE Futures investigated the challenges and impacts of achieving very high renewable electricity generation levels in the contiguous United States by 2050.

  9. Renewable Electricity Futures (Presentation)

    SciTech Connect (OSTI)

    Mai, T.

    2012-11-01

    This presentation summarizes findings of NREL's Renewable Electricity Futures study, published in June 2012. RE Futures investigated the challenges and impacts of achieving very high renewable electricity generation levels in the contiguous United States by 2050.

  10. Renewable Electricity Futures (Presentation)

    SciTech Connect (OSTI)

    Mai, T.

    2013-04-01

    This presentation summarizes findings of NREL's Renewable Electricity Futures study, published in June 2012. RE Futures investigated the challenges and impacts of achieving very high renewable electricity generation levels in the contiguous United States by 2050.

  11. Renewable Electricity Futures (Presentation)

    SciTech Connect (OSTI)

    Mai, T.

    2012-10-01

    This presentation library summarizes findings of NREL's Renewable Electricity Futures study, published in June 2012. RE Futures investigated the challenges and impacts of achieving very high renewable electricity generation levels in the contiguous United States by 2050.

  12. Presentations for Industry

    Office of Energy Efficiency and Renewable Energy (EERE)

    Industrial energy managers, utilities, and energy management professionals can find online trainings and information dissemination at no-cost. AMO has provided these energy-saving strategies from leading manufacturing companies and energy experts through several different presentation series.

  13. Hydrogen Fuel Quality (Presentation)

    SciTech Connect (OSTI)

    Ohi, J.

    2007-05-17

    Jim Ohi of NREL's presentation on Hydrogen Fuel Quality at the 2007 DOE Hydrogen Program Annual Merit Review and Peer Evaluation on May 15-18, 2007 in Arlington, Virginia.

  14. Solar Data Hub (Presentation)

    SciTech Connect (OSTI)

    Orwig, K.

    2011-04-01

    As power grid integration of renewables becomes ever more important and detailed, the need for a centralized place for solar-related resource data is needed. This presentation describes such a place and website.

  15. Control the Present

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

    Control the Present Image of water sampling trip embarking downstream from Otowi Bridge onto the Rio Grande with text overlay of 'How does LANL minimize the impacts from ongoing...

  16. PowerPoint Presentation

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

    Min Agenda Topic Presenter 10:00 5 Review Agenda Mary Hawken 10:05 15 CFO Spotlight Javier Fernandez Financial Highlights 10:20 30 Review of 1st Quarter Financial Results...

  17. Papers & Presentations- 2014

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

    Hohlraum Glint and Laser Pre-pulse Detector for NIF Experiments Mike Dunne Presents Plenary Talk at Optics+Photonics Conference July Reduced Instability Growth with High-adiabat ...

  18. Biomass Program Overview Presentation

    SciTech Connect (OSTI)

    2011-12-01

    This presentation is an interactive walk through of the Program's vision of advancing the biofuels and bioproducts industry and highlights the research and development activities that will help achieve it.

  19. NUG 2014 Training Presentations

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

    Training Presentations NUG 2014 Training Presentations Sort by: Default | Name | Date (low-high) | Date (high-low) | Source | Category New User Training: Introduction to NERSC February 3, 2014 | Author(s): Harvey Wasserman, NERSC | Download File: 01-NERSCIntro-NUG2014.pdf | pdf | 11 MB New User Training: Introduction to NERSC Accounts and Allocations February 3, 2014 | Author(s): David Turner, NERSC | Download File: 02-AccountsAllocations-NUG2014.pdf | pdf | 988 KB Connecting to NERSC February

  20. Renewable Electricity Futures (Presentation)

    SciTech Connect (OSTI)

    Hand, M. M.

    2012-08-01

    This presentation library summarizes findings of NREL's Renewable Electricity Futures study, published in June 2012. RE Futures investigated the challenges and impacts of achieving very high renewable electricity generation levels in the contiguous United States by 2050. It was presented to the 2012 Western Conference of Public Service Commissioners, during their June, 2012, meeting. The Western Conference of Public Service Commissioners is a regional association within the National Association of Regulatory Utility Commissioners (NARUC).

  1. LAPD 2013 presentations

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

    Presentations at LAPD-16 Title Presenter Application of a dispersion interferometer using a ratio of modulation amplitudes to LHD and future prospects T. Akiyama Laser-spectroscopic electric field measurements in ans-pulsed microplasma in nitrogen P. Boehm Thomson scattering on COMPASS tokamak plasma edge profile P. Bohm Atomic bromine density measurements in HBr inductively coupled plasma by two-photon absorption laser-induced fluorescence J-P. Booth Density Fluctuation Measurement using

  2. ARM - Meetings and Presentations

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

    Meetings and Presentations Related Links MC3E Home News News & Press MC3E Backgrounder (PDF, 1.61MB) SGP Images ARM flickr site Field Blog ARM Data Discovery Browse Data Deployment Operations Measurements Science Plan (PDF, 3.85 MB) Featured Data Plots SGP Data Plots (all) Experiment Planning Steering Committee Science Questions MC3E Proposal Abstract and Related Campaigns Meetings Cloud Life Cycle Working Group Contacts Michael Jensen, Lead Scientist Meetings and Presentations Next Meeting:

  3. HEP Exascale Review Presentations

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

    Presentations HEP Exascale Review Presentations Sort by: Default | Name | Date (low-high) | Date (high-low) | Source | Category HEP Requirements Review June 10, 2015 | Author(s): Barbara Helland, DOE ASCR | Download File: RequirementsreviewsHellandV3150610.pdf | pdf | 2.1 MB Opening Remarks June 10, 2015 | Author(s): Rob Roser, Salman Habib, Richard Gerber | Download File: HEP-ASCR-Exascale-opening-remarkssh.pdf | pdf | 187 KB P5 Science Drivers: Accelerator Experiments June 10, 2015 |

  4. Blade Testing Trends (Presentation)

    SciTech Connect (OSTI)

    Desmond, M.

    2014-08-01

    As an invited guest speaker, Michael Desmond presented on NREL's NWTC structural testing methods and capabilities at the 2014 Sandia Blade Workshop held on August 26-28, 2014 in Albuquerque, NM. Although dynamometer and field testing capabilities were mentioned, the presentation focused primarily on wind turbine blade testing, including descriptions and capabilities for accredited certification testing, historical methodology and technology deployment, and current research and development activities.

  5. MaRIE Presentations

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

    MaRIE Presentations MaRIE Presentations MaRIE will provide a capability to address the control of performance and production of weapons materials at the mesoscale. MaRIE fills a critical gap in length scale between the integral scale addressed by studies conducted at DARHT, U1a, NIF, and Z. MaRIE 1.0 Matter Radiation Interactions in Extremes 1.0 70th Anniversary (pdf) July 27, 2013

  6. PowerPoint Presentation

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

    2-000 VERA-CS Development Progress Presented by Scott Palmtag Physics Integration (PHI) CASL Industry Council Meeting Greenville, SC April 12-13, 2016 2 CASL-U-2016-1082-000 Overview * VERA-CS Description * Performance Improvements * Thermal Expansion * Library Validation * Transient Development Status * To be discussed in other presentations: - BWR Plans - Test Stands - VERAView Post-processing Focus this year is to optimize performance (reduce run times) and make the code more robust 3

  7. ALGERIAN AFIS SOLUTION PRESENTATION

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

    3/2011 1 17 Feb 2010 HAB Presentation Hanford Tank Closure & Waste Management [TC&WM] EIS External Independent Review Team Preliminary Assessment Report HAB 2-17-2010 Presentation - Contract # 046-007-000 KD Auclair & Associates, LLC 1/3/2011 2 AGENDA  Introductions  Overview of KD Auclair & Associates, LLC  Background  Scope of Work  Method and Approach  Current Status - Work Remaining  Preliminary Observations and Conclusions  Recommendations  EIS

  8. THE WISE BLAZAR-LIKE RADIO-LOUD SOURCES: AN ALL-SKY CATALOG OF CANDIDATE γ-RAY BLAZARS

    SciTech Connect (OSTI)

    D'Abrusco, R.; Paggi, A.; Smith, H. A.; Massaro, F.; Masetti, N.

    2014-11-01

    We present a catalog of radio-loud candidate γ-ray emitting blazars with WISE mid-infrared colors similar to the colors of confirmed γ-ray blazars. The catalog is assembled from WISE sources detected in all four WISE filters, with colors compatible with the three-dimensional locus of the WISE γ-ray emitting blazars, and which can be spatially cross-matched with radio sources from one of the three radio surveys: NVSS, FIRST, and/or SUMSS. Our initial WISE selection uses a slightly modified version of previously successful algorithms. We then select only the radio-loud sources using a measure of the radio-to-IR flux, the q {sub 22} parameter, which is analogous to the q {sub 24} parameter known in the literature but which instead uses the WISE band-four flux at 22 μm. Our final catalog contains 7855 sources classified as BL Lacs, FSRQs, or mixed candidate blazars; 1295 of these sources can be spatially re-associated as confirmed blazars. We describe the properties of the final catalog of WISE blazar-like radio-loud sources and consider possible contaminants. Finally, we discuss why this large catalog of candidate γ-ray emitting blazars represents a new and useful resource to address the problem of finding low-energy counterparts to currently unidentified high-energy sources.

  9. An orbital angular momentum radio communication system optimized by intensity controlled masks effectively: Theoretical design and experimental verification

    SciTech Connect (OSTI)

    Gao, Xinlu; Huang, Shanguo Wei, Yongfeng; Zhai, Wensheng; Xu, Wenjing; Yin, Shan; Gu, Wanyi; Zhou, Jing

    2014-12-15

    A system of generating and receiving orbital angular momentum (OAM) radio beams, which are collectively formed by two circular array antennas (CAAs) and effectively optimized by two intensity controlled masks, is proposed and experimentally investigated. The scheme is effective in blocking of the unwanted OAM modes and enhancing the power of received radio signals, which results in the capacity gain of system and extended transmission distance of the OAM radio beams. The operation principle of the intensity controlled masks, which can be regarded as both collimator and filter, is feasible and simple to realize. Numerical simulations of intensity and phase distributions at each key cross-sectional plane of the radio beams demonstrate the collimated results. The experimental results match well with the theoretical analysis and the receive distance of the OAM radio beam at radio frequency (RF) 20 GHz is extended up to 200 times of the wavelength of the RF signals, the measured distance is 5 times of the original measured distance. The presented proof-of-concept experiment demonstrates the feasibility of the system.

  10. Renewable Electricity Futures (Presentation)

    SciTech Connect (OSTI)

    DeMeo, E.

    2012-08-01

    This presentation library summarizes findings of NREL's Renewable Electricity Futures study, published in June 2012. RE Futures investigated the challenges and impacts of achieving very high renewable electricity generation levels in the contiguous United States by 2050. It was presented at Wind Powering America States Summit. The Summit, which follows the American Wind Energy Association's (AWEA's) annual WINDPOWER Conference and Exhibition, provides state Wind Working Groups, state energy officials, U.S. Energy Department and national laboratory representatives, and professional and institutional partners an opportunity to review successes, opportunities, and challenges for wind energy and plan future collaboration.

  11. Renewable Electricity Futures (Presentation)

    SciTech Connect (OSTI)

    Mai, T.

    2012-08-01

    This presentation library summarizes findings of NREL's Renewable Electricity Futures study, published in June 2012. RE Futures investigated the challenges and impacts of achieving very high renewable electricity generation levels in the contiguous United States by 2050. It was presented at the 2012 RE AMP Annual Meeting. RE-AMP is an active network of 144 nonprofits and foundations across eight Midwestern states working on climate change and energy policy with the goal of reducing global warming pollution economy-wide 80% by 2050.

  12. Papers and Presentations

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

    papers presentations Papers and Presentations Could Capsule 'Shims' Enhance NIF Implosions? Sometimes a carpenter's best friend is a shim-a narrow, wedge-shaped piece of wood or plastic that can be used to close a gap when components are out of plumb or don't quite fit together. LLNL researchers are looking into a similar technique to try to close the gap between the expected performance of NIF implosions, in terms of neutron yield or energy produced, and the results of experiments to date. In a

  13. PowerPoint Presentation

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

    Past R2R Processing Successes at ORNL and Current/Future Opportunities Presented by Dr. David L. Wood, III Roll-to-Roll Manufacturing Team Lead & Fuel Cell Technologies Program Manager Oak Ridge National Laboratory Presented to AMO HV R2R Workshop Alexandria, VA 12/2/15 2 AMO HV R2R Workshop, 12/2/15, David Wood ORNL Is Addressing R2R Processing Issues Relevant to Industry * Annealing of materials on temperature-sensitive substrates (solid-state lithium-ion cathodes for large-scale thin-film

  14. PowerPoint Presentation

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

    National Laboratory Mentor-Protégé Program Business Success Stories Presented by Cassandra McGee Stuart ORNL Small Business Programs Office May 23, 2013 2 Presentation name Today, ORNL is DOE's largest science and energy laboratory 2 Managed by UT-Battelle for the U.S. Department of Energy $1.65B budget World's most intense neutron source 4,400 employees World-class research reactor 3,000 research guests annually $500M modernization investment Nation's largest materials research portfolio

  15. PowerPoint Presentation

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

    Performance engineering workflow SCORE-P AND SCALASCA PERFORMANCE TOOLS TRAINING, NERSC, JULY 26, 2016 *Calculation of metrics *Identification of performance problems *Presentation of results *Modifications intended to eliminate/reduce performance problem *Collection of performance data *Aggregation of performance data *Prepare application with symbols *Insert extra code (probes/hooks) Preparation Measurement Analysis Optimization 2 VIRTUAL INSTITUTE - HIGH PRODUCTIVITY SUPERCOMPUTING Why

  16. COLLOQUIUM: Type II Solar Radio Bursts: From Fundamental Plasma...

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

    distribution functions, the electron beams drive Langmuir waves, and the Langmuir waves couple linearly andor nonlinearly to produce the fundamental and harmonic radio emission. ...

  17. TWO POPULATIONS OF GAMMA-RAY BURST RADIO AFTERGLOWS

    SciTech Connect (OSTI)

    Hancock, P. J.; Gaensler, B. M.; Murphy, T., E-mail: Paul.Hancock@Sydney.edu.au [Also at Australian Research Council Centre of Excellence for All-sky Astrophysics (CAASTRO), The University of Sydney, Sydney, NSW 2006, Australia. (Australia)

    2013-10-20

    The detection rate of gamma-ray burst (GRB) afterglows is ?30% at radio wavelengths, much lower than in the X-ray (?95%) or optical (?70%) bands. The cause of this low radio detection rate has previously been attributed to limited observing sensitivity. We use visibility stacking to test this idea, and conclude that the low detection rate is instead due to two intrinsically different populations of GRBs: radio-bright and radio-faint. We calculate that no more than 70% of GRB afterglows are truly radio-bright, leaving a significant population of GRBs that lack a radio afterglow. These radio-bright GRBs have higher gamma-ray fluence, isotropic energies, X-ray fluxes, and optical fluxes than the radio-faint GRBs, thus confirming the existence of two physically distinct populations. We suggest that the gamma-ray efficiency of the prompt emission is responsible for the difference between the two populations. We also discuss the implications for future radio and optical surveys.

  18. Accelerator measurements of magnetically-induced radio emission...

    Office of Scientific and Technical Information (OSTI)

    Journal Article: Accelerator measurements of magnetically-induced radio emission from particle cascades with applications to cosmic-ray air showers Citation Details In-Document...

  19. High efficiency, oxidation resistant radio frequency susceptor

    DOE Patents [OSTI]

    Besmann, Theodore M.; Klett, James W.

    2004-10-26

    An article and method of producing an article for converting energy from one form to another having a pitch-derived graphitic foam carbon foam substrate and a single layer coating applied to all exposed surfaces wherein the coating is either silicon carbide or carbides formed from a Group IVA metal. The article is used as fully coated carbon foam susceptors that more effectively absorb radio frequency (RF) band energy and more effectively convert the RF energy into thermal band energy or sensible heat. The essentially non-permeable coatings also serve as corrosion or oxidation resistant barriers.

  20. A selection of giant radio sources from NVSS

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

    Proctor, D. D.

    2016-06-01

    Results of the application of pattern-recognition techniques to the problem of identifying giant radio sources (GRSs) from the data in the NVSS catalog are presented, and issues affecting the process are explored. Decision-tree pattern-recognition software was applied to training-set source pairs developed from known NVSS large-angular-size radio galaxies. The full training set consisted of 51,195 source pairs, 48 of which were known GRSs for which each lobe was primarily represented by a single catalog component. The source pairs had a maximum separation ofmore » $$20^{\\prime} $$ and a minimum component area of 1.87 square arcmin at the 1.4 mJy level. The importance of comparing the resulting probability distributions of the training and application sets for cases of unknown class ratio is demonstrated. The probability of correctly ranking a randomly selected (GRS, non-GRS) pair from the best of the tested classifiers was determined to be 97.8 ± 1.5%. The best classifiers were applied to the over 870,000 candidate pairs from the entire catalog. Images of higher-ranked sources were visually screened, and a table of over 1600 candidates, including morphological annotation, is presented. These systems include doubles and triples, wide-angle tail and narrow-angle tail, S- or Z-shaped systems, and core-jets and resolved cores. In conclusion, while some resolved-lobe systems are recovered with this technique, generally it is expected that such systems would require a different approach.« less

  1. General Presentation Template

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

    Steve Pfaff August 8, 2013 Safety Culture Improvement: Past, Present, and Future PAST  DNFSB Recommendation 2011-1, June 9, 2011, Safety Culture at the Waste Treatment and Immobilization Plant  "The investigative record demonstrates that both the DOE and contractor project management behaviors reinforce a subculture at WTP that deters the timely reporting, acknowledgement, and ultimate resolution of technical safety concerns." 2 PAST  HSS Assessment of Nuclear Safety Culture

  2. Papers and Presentations - 2015

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

    april Papers and Presentations - 2015 April Rugby Hohlraums Join the Ignition Scrum Thinner Capsules Yield Faster Implosions Chris Barty Discusses the 'Nexawatt' Laser at SPIE Conference Near-Vacuum Hohlraums Show Promise NIF inertial confinement fusion (ICF) experiments typically have used plastic (CH) capsules inside gold hohlraums filled with helium at densities ranging from 0.96 to 1.6 mg/cm3. Conventional laser pulses on the order of 15 to 20 nanoseconds in length are needed to reach

  3. Papers and Presentations - 2016

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

    Papers and Presentations - 2016 July NIF Experiment Challenges Standard Ionization Models Measuring Instabilities in NIF Implosions at Peak Velocity 'Contact Lenses' for High-power Lasers May New Insights into Glass Polishing Toward a High-Energy Laser-Plasma Optical System April Two-Shock Experiments Tune Implosion Symmetry Researchers Examine Hydrogen Under High Pressure Nature Physics Paper Reviews NIF's Progress Toward Ignition March When Meteorites Create Diamonds Got Questions About NIF?

  4. ARM - Meetings and Presentations

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

    Meetings and Presentations Related Links RACORO Home AAF Home ARM Data Discovery Browse Data Post-Campaign Data Sets Data Guide (PDF, 1.4MB) Campaign Journal Flight Details Images ARM flickr site Deployment Operations Measurements Science & Operations Plan (PDF, 640K) SGP Data Plots RACORO wiki Login Required Experiment Planning Steering Committee Science Questions RACORO Proposal Abstract Full Proposal (PDF, 886K) Collaborations Meetings CLOWD Working Group News Discovery Channel Earth Live

  5. PowerPoint Presentation

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

    STEM Volunteer Training: Volunteer Opportunities April 14, 2016 Names of Presenters Megan Davis Program Manager TechBridge Rabiah Mayas, Ph.D. Director of Science and Integrated Strategies Museum of Science and Industry Chicago Karen Peterson CEO National Girls Collaborative Project Rosa Moreno Senior Policy Advisor, Partnerships Corporation for National & Community Service 2 Agenda You are on mute! Use your webinar bar to fill out poll, send a chat or send in a question. Please tell us via

  6. Tran_Presentation

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

    acid media into a deep eutectic solvent using bis(2-ethylhexyl) phosphate Presented by: Kate Tran, Eastern Kentucky University Merinda Volia, Department of Nuclear Engineering, Texas A&M University Dr. Evgeny Tereshatov, Cyclotron Institute, Texas A&M University Advisor: Dr. Charles Folden III, Cyclotron Institute, Texas A&M University Introduction * Chemical properties of superheavy elements (Z > 108) are relatively unknown, with exception of element 112 * Preliminary research

  7. PowerPoint Presentation

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

    Laboratory Priorities Presentation to the Commission to Review the Effectiveness of the National Energy Laboratories Dr. David T. Danielson September 15, 2014 2 DOE Mission: Enhance U.S. security and economic growth through transformative science, technology innovation, and market solutions to meet our energy and environmental challenges Goal 1: Science and Energy Goal 3: Management and Performance Goal 2: Nuclear Security Goal 1: Science and Energy Goal 3: Management and Performance Goal 2:

  8. PowerPoint Presentation

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

    Caterpillar: Non-Confidential GAS TURBINES IN SUPPORT OF GRID MODERNIZATION 10 FEBRUARY 2016 Presented by: Uwe Schmiemann PG Marketing & Product Strategy Manager Solar Turbines Incorporated 2 SOLAR TURBINES INCORPORATED  World's Largest Manufacturer of Industrial Gas Turbines (1 to 22 MW)  Over 15,000 Gas Turbines Sold  Over 6,000 Gas Compressors Sold  Installations in over 100 Countries  Direct End-to-End Sales & Service  More than 2 Billion Fleet Operating Hours 

  9. PowerPoint Presentation

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

    Standardization of Energy Efficiency Information: The Northeast Regional Perspective Presented to EIA Energy Conference July 11, 2016 About NEEP 1 Mission Accelerate energy efficiency as an essential part of demand-side solutions that enable a sustainable regional energy system Approach Overcome barriers and transform markets via Collaboration, Education and Enterprise Vision Region embraces next generation energy efficiency as a core strategy to meet energy needs in a carbon-constrained world

  10. PowerPoint Presentation

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

    System Integrated Project Team One System | 1 Presentation to Hanford Advisory Board Tank Waste Committee Ben Harp, DOE-WTP Ray Skwarek, WRPS Rick Kacich, WTP October 10, 2012 Update  Last Time We Met - We were exploring the idea of One-System - Focusing on constructing to operate the WTP and associated facilities - Execute One System approach * Focus on integrating the TOC and WTP contract - Explore opportunity to begin operations of LAW * Operational risk reduction by starting lowest hazard

  11. PowerPoint Presentation

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

    Upgrades to Engineering Controls, Administrative Controls, Worker Training, Industrial Hygiene Procedures, Occupational Medicine Programs and Oversight 2009-Present Improvements to the Occupational Health Program May 8, 2014 Brian Harkins, Acting Assistant Manager of Technical and Regulatory Support and Rich Urie, Industrial Hygiene Program Representative for Tank Farms 2 Engineering Controls in Place at the Tank Farms  Active ventilation, including portable exhausters and increased flow

  12. PowerPoint Presentation

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

    Dr. Isabelle Wheeler, Program Manager Tank Farm Projects - Waste Feed Delivery Systems Provision of a Tank Waste Characterization and Staging Capability at Hanford Presentation: March 12, 2014 2 Mission Need: Bridging the Capability Gap Provision of the needed connectivity between the Hanford Tank Farms (TF) and the Waste Treatment and Immobilization Plant (WTP) to bridge known performance gaps in the waste feed delivery and certification system that meets the WTP Waste Acceptance Criteria (WAC)

  13. PowerPoint Presentation

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

    Hanford Advisory Board Tank Waste Committee Low-Activity Waste Pretreatment System Presented by: Steve Pfaff - Federal Project Director November 13, 2014 2 2008 History  Interim Pretreatment System (IPS) alternatives analysis resulted in selection of cross-flow filtration and ion exchange - validated by an expert panel 2011 History  Critical Decision 1 Package, was submitted by Washington River Protection Solution in September 2011  Conceptual design was developed for both an in-tank

  14. PowerPoint Presentation

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

    Act (NEPA) Implementing Procedures - Title 10, Code of Federal Regulations, Part 1021 * Determine the scope of the NEPA document * Conduct analysis to see if significant impacts would result from proposed action * Select preferred alternative * Prepare final NEPA document * Decide whether to prepare an EIS or issue a Finding of No Significant Impact National Historic Preservation Act (NHPA) - Section 106 * Identify whether Historic Properties are present in the area of potential effect *

  15. PowerPoint Presentation

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

    Salishan Conference High Speed Computing April 23-27, 2007 Jeff Sonsalla Engineering Director SGI Design and Qualification of High Performance Computer Systems Presentation Overview * The correctness stack - View from the top down - Middle ground - a data digression - View from the bottom up * Trends and challenges * That was then...This is now Slide 2 Correctness Stack: View From Above * A problem is defined * A solution is expressed as a numerical algorithm - Equations are constructed in a

  16. PowerPoint Presentation

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

    and Challenges of the Use of HTS Materials for Fusion L. Bromberg MIT Plasma Science Fusion Center In collaboration J.V. Minervini, J.H. Schultz and the ARIES team Organization of talk * Brief status of HTS materials for magnets * Present HTS magnet development * Application of HTS materials to fusion - Motivation - Potential - Challenges * Conclusions Facts on Superconductors Three Critical Parameters: * Critical temperature, T c * Critical magnetic field, H c * Critical current density, J c

  17. PowerPoint Presentation

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

    5-parameter PV Module Model Aron P. Dobos, NREL Presented at the 2013 Sandia PV Performance Modeling Workshop Santa Clara, CA. May 1-2, 2013 Published by Sandia National Laboratories with the permission of the author. 2 Outline 1. Quick review of single diode model 2. Automated method for estimating model parameters from STC measurements 3. Overview of CEC module database and related processes 3 Overview * Basic 5 parameter single diode model designed to predict module performance using only

  18. PowerPoint Presentation

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

    Cloud Life Cycle and Structure A.M. Vogelmann, E. Luke, M.P. Jensen, P. Kollias, Brookhaven National Laboratory, Upton, New York and E.R. Boer LUEBEC, San Diego, CA SUMMARY SUMMARY * * Cloud tracking using geostationary satellite data provides a context of the cloud state observed at the ARM Sites, including the cloud's life-cycle stage and its representativeness of the region. * * Examples are presented of the duration and paths of mesoscale convective systems within the Tropical Western

  19. PowerPoint Presentation

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

    Simulations of Clouds and Boundary Layer Processes Image courtesy of Bjorn Stevens Yaosheng Chen, Pennsylvania State University Tobias Marke, University of Cologne Robert Schrom, Pennsylvania State University Hee-Jung Yang, University of Illinois Jianhao Zhang, University of Miami ARM Summer Training Final Presentation 24 July 2015 Motivation and Outline * What domains are needed to realistically simulate shallow cumulus? * What are the properties of the simulated cloud field? * What is the

  20. Short_Presentation

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

    Reconciling Giant Resonance Data Ashton Short Mentor: Dr. Dave Youngblood Motivation * Giant Resonances are important because they tell us about bulk properties of the nucleus, such as its compression modulus. * While Gaussian fits are most common in the study of Giant Resonances, the group from Osaka University in Japan use either Lorentzian or Breit-Wigner fits. This presents a challenge when it comes to comparing results. * The Osaka group primarily publishes radiative strength distributions

  1. PowerPoint Presentation

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

    William Gausman Sr. Vice President Asset Management & Planning DOE Energy Information Administration Washington, DC April 7, 2010 PHI's Smart Grid Vision and Investment Grant Awards 1 Presentation Overview * PHI Company overview * PHI's Smart Grid Vision * SGIG Awards - Scope, Costs, Benefits and Schedules * Distribution Automation * Key Next Steps 2 Combined Service Territory Transmission & Distribution Competitive Energy / Other Who is Pepco Holdings, Inc. PHI Investments 2 Regulated

  2. Underground coal gasification. Presentations

    SciTech Connect (OSTI)

    2007-07-01

    The 8 presentations are: underground coal gasification (UCG) and the possibilities for carbon management (J. Friedmann); comparing the economics of UCG with surface gasification technologies (E. Redman); Eskom develops UCG technology project (C. Gross); development and future of UCG in the Asian region (L. Walker); economically developing vast deep Powder River Basin coals with UCG (S. Morzenti); effectively managing UCG environmental issues (E. Burton); demonstrating modelling complexity of environmental risk management; and UCG research at the University of Queensland, Australia (A.Y. Klimenko).

  3. Papers and Presentations - 2014

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

    4 / december Papers and Presentations - 2014 December Studying Ion Kinetic Effects in NIF Implosions The results of an investigation of the role of kinetic and multi-ion effects on NIF implosions were reported in a Physics of Plasmas paper published online on Dec. 29. The research focused on shock-driven deuterium (D2) and deuterium-helium-three (D3He) gas-filled "exploding-pusher" inertial confinement fusion (ICF) implosions at NIF to assess the impact of ion kinetic effects.

  4. ARM - Meetings and Presentations

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

    Meetings and Presentations Related Links amie.png 34h AMIE Home cindy.png 50h CINDY2011 dynamo.png 34h DYNAMO ARM Data Discovery Browse Data Outreach News & Press Blog Backgrounder (PDF, 1.2MB) Education Flyer (PDF, 2.0MB) Images ARM flickr site Official AMIE Logo AMIE Gear Experiment Planning Steering Committee AMIE-MANUS Proposal Abstract AMIE-GAN Proposal Abstract Meetings Cloud Life Cycle Working Group Deployment Operations Science Plan - TWP Manus Site (PDF, 2.1 MB) Science Plan - Gan

  5. PowerPoint Presentation

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

    Port and Integrate Base- line WEC Codes into VERA/LIME - VRI Physics Simulation Suite Project Rod Schmidt Sandia National Laboratory January 12, 2011 CASL-U-2010-0018-000 Nuclear Energy CASL-U-2010-0018-000 Level 1 Milestone: CASL.Y1.01 Port and Integrate Base-line WEC Codes into VERA/LIME VRI Physics Simulation Suite Project Presented by: Rod Schmidt, SNL with: Chris Baker and John Turner: ORNL Ross Bartlett, Noel Belcourt, Roger Pawlowski: SNL David Paterline, Pete Hilton and Brian Coulter:

  6. PowerPoint Presentation

    Office of Environmental Management (EM)

    Ground Water Issues Presentation for DOE Tritium Focus Group May 5-6, 2015 Steven M. Garry, CHP US Nuclear Regulatory Commission NRR/DRA/ARCB Tritium Leaks * Approximately 70% of plants have had some leakage, a list of plants with leaks is on NRC public web site - http://www.nrc.gov/reactors/operating/ops-experience/tritium/list-leaks-spills.pdf * Most leaks are from non-safety related, underground piping - onsite groundwater contamination up to 19 million pCi/L - No tritium from leaks detected

  7. PowerPoint Presentation

    Office of Environmental Management (EM)

    5 th Tritium Focus Group (TFG) meeting PPPL, NJ 05/05 - 05/06/2015 Presentation Outline Background: SBIR solicitation language Current research activities: * Status and progress of the SBIR solicitation and funded R&D: * Nano-engineered solid tritium breeder fuel by a small business in California. $150K (FY12)+ $1M (FY13-FY14). * Numerical simulation of fluid flow under Magneto-Hydro-Dynamic (MHD) influence. * International Collaborations. Challenges/Issues: * Should a FES-funded University

  8. PowerPoint Presentation

    Office of Environmental Management (EM)

    SRNL Mo-99 Technical Support for SHINE TM Discussion on Tritiated Waste Disposition Pathways for Commercial Entities Nancy Halverson SRNL Presentation for Tritium Focus Group Meeting Los Alamos, NM November 3, 2015 SRNL-L2100-2015-00098 Background - Molybdenum-99 ( 99 Mo or "moly") * "Molybdenum-99 is the parent isotope of technetium-99m ( 99m Tc) - 99 Mo is loaded into 99m Tc generator and is produced by 99 Mo decay - 99m Tc is extracted (by radiopharmacy staff) for use in

  9. PowerPoint Presentation

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

    Update on BOEM Lower 48 Assessment Matthew Frye BOEM - Herndon, VA 6 June 2013 Update on BOEM Lower 48 Assessment A presentation to the Methane Hydrate Advisory Committee Matthew Frye Resource Evaluation Division BOEM - Herndon, VA matt.frye@boem.gov 6 June 2013 BOEM Resource Evaluation Division gas hydrate webpage: http://www.boem.gov/Oil-and-Gas-Energy-Program/Resource- Evaluation/Gas-Hydrates/index.aspx Update on BOEM Lower 48 Assessment Matthew Frye BOEM - Herndon, VA 6 June 2013 Update on

  10. PowerPoint Presentation

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

    FY 2016 National Laboratory Call for Proposals and Merit Review (BTOLMR1600000) Informational Webinar February 6, 2015 2 Expected Schedule Activity Date Lab Call Released Feb 2, 2015 Informational Webinar Feb 6, 2015, 2 - 4 PM ET Letters of Intent Due (submitted to EERE Exchange) Feb 17, 2015, 5 PM ET Proposals Due (submitted to EERE Exchange) Mar 13, 2015, 5 PM ET Reviewers' Initial Comments Due Apr 1, 2015, 5 PM ET Presentations Due (submitted to BTOLabCallFY16-18@EE.DOE.Gov) Apr 8, 2015, 5

  11. PowerPoint Presentation

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

    sunshot energy.gov/sunshot Incubator Awardee Showcase Quick Pitches from Solar Companies March 4, 2015 Monica Andrews and Garrett Nilsen Solar Energy Technologies Office energy.gov/sunshot Before we begin: * If you are a presenter, click on the "raise hand" feature in the webinar * All attendees will be muted * Please enter questions into the chat box or email SunShot.Incubator@ee.doe.gov to request more information energy.gov/sunshot SunShot Incubator Awardee Showcase * Learn about

  12. PowerPoint Presentation

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

    FY 2017 National Laboratory Call for Proposals and Merit Review (BTOLMR0001719) Informational Webinar February 6, 2015 2 Expected Schedule Activity Date Lab Call Released Feb 4, 2016 Informational Webinar Feb 10, 2016, 12:30PM ET Letters of Intent Due (submitted to EERE Exchange) Feb 16, 2016, 5 PM ET Proposals Due (submitted to EERE Exchange) Mar 7, 2016, 5 PM ET Reviewers' Initial Comments Due Mar 23, 2016, 5 PM ET Presentations Due (submitted to BTOLabCallFY16-18@EE.DOE.Gov) Mar 30, 2016, 5

  13. PowerPoint Presentation

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

    Presentation * CAES Aquifer Technology * Geological Framework of Iowa * Dallas Center Structure * Results of CAES Feasibility Simulation * ISEP CAES Development Plan How Does CAES Work? CAES Turbo-Machinery Operating Requirements Equipment Manufacturer Plant Size (MW) Min. Inlet Pressure (psi) Min. Flow Rate (lbs/MW/hr) Total Min. Flow Rate (lb/hr) Allison 15 200 9500 142,500 MAN Turbo 50 50 9500 475,000 Dresser Rand 134 830 9500 1,273,000 Alston 300 900 9500 2,850,000 Westinghouse (501D5) 350

  14. PowerPoint Presentation

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

    Howieson, Issue Manager Presentation Sept. 4, 2013 Public Comment Period: July 15 - August 16, 2013 Public Meetings: Tuesday, July 30, 2013 5:30 - 8:30 p.m. Richland Public Library 955 Northgate Drive Richland, WA Wednesday, July 31, 2013 6-9p.m. University Heights Center 5031 University Way NE Seattle, WA Thursday, August 8, 2013 6-9p.m. Best Western Hotel 1108 E Marina Dr. Hood River, OR Methods Contaminated soil removal, referred to as removal, treatment, and disposal (RTD) Monitored Natural

  15. PowerPoint Presentation

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

    and Scalasca Performance Tools Training http://www.nersc.gov/users/training/events/scorep-and-scalasca Christian Feld Jülich Supercomputing Centre David Böhme Lawrence Livermore National Lab VIRTUAL INSTITUTE - HIGH PRODUCTIVITY SUPERCOMPUTING Agenda Time Topic Presenter 09:00 Welcome Yang 09:10 Introduction to VI-HPS & overview of tools Feld Introduction to parallel performance engineering Building and running NPB-MZ-MPI/BT-MZ on Cori Instrumentation & measurement with Score-P 11:00

  16. PowerPoint Presentation

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

    0, 2015 HPCToolkit Basic Features * Run application natively and every 100-200 times per second, interrupt program and record snapshot of call stack and then combine these into a calling context tree (CCT). * Combine sampling data with a static analysis of the program structure: loops, inline functions, etc. * Present top-down, bottom-up and flat views of calling context tree (CCT) and time-sequence trace view. Metrics are displayed per source line in the context of their call path. * Can sample

  17. PowerPoint Presentation

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

    4974 1 Introducing SAM (Sun and Aureole Measurement), a New, Ground-based Capability for Measuring Cloud Optical Properties Presented to Cloud Properties Working Group IRF Working Group ARM Science Team Meeting John DeVore (devore@visidyne.com) A.T. Stair (ats@visidyne.com) Bob McClatchey 1 (RMcClatchey@msn.com) Visidyne, Inc. 781-273-2820 March 2006 1 Consultant VI-4974 2 Space-Based Sun-Tracking Zenith-Viewing Cirrus (Ice Columns) Solar elevation = 45 deg Sat depression = 45 deg Surface albedo

  18. Energy Week presentations

    SciTech Connect (OSTI)

    2006-07-01

    Topics covered include: energy security; clean energy and low carbon; energy for growth and poverty reduction in Africa; financing of energy efficiency; SMEs for decentralised energy service provision; potential for biofuels in developing countries; clean energy and sustainable development; clean energy finance and private equity funds; power generation and low carbon technologies; beyond traditional finance; rehabilitation and emission control in thermal power plants; and carbon finance. The presentations are mainly in ppt (Power Point) or pdf (Acrobat) format. Some videos of the conference are also available on the website.

  19. Measurements of time average series resonance effect in capacitively coupled radio frequency discharge plasma

    SciTech Connect (OSTI)

    Bora, B.; Bhuyan, H.; Favre, M.; Wyndham, E.; Chuaqui, H.; Kakati, M.

    2011-10-15

    Self-excited plasma series resonance is observed in low pressure capacitvely coupled radio frequency discharges as high-frequency oscillations superimposed on the normal radio frequency current. This high-frequency contribution to the radio frequency current is generated by a series resonance between the capacitive sheath and the inductive and resistive bulk plasma. In this report, we present an experimental method to measure the plasma series resonance in a capacitively coupled radio frequency argon plasma by modifying the homogeneous discharge model. The homogeneous discharge model is modified by introducing a correction factor to the plasma resistance. Plasma parameters are also calculated by considering the plasma series resonances effect. Experimental measurements show that the self-excitation of the plasma series resonance, which arises in capacitive discharge due to the nonlinear interaction of plasma bulk and sheath, significantly enhances both the Ohmic and stochastic heating. The experimentally measured total dissipation, which is the sum of the Ohmic and stochastic heating, is found to increase significantly with decreasing pressure.

  20. Radio constraints on heavily obscured star formation within dark gamma-ray burst host galaxies

    SciTech Connect (OSTI)

    Perley, D. A. [Department of Astronomy, California Institute of Technology, MC 249-17, 1200 East California Blvd., Pasadena, CA 91125 (United States); Perley, R. A., E-mail: dperley@astro.caltech.edu [National Radio Astronomy Observatory, P.O. Box O, Socorro, NM 87801 (United States)

    2013-12-01

    Highly dust-obscured starbursting galaxies (submillimeter galaxies and their ilk) represent the most extreme sites of star formation in the distant universe and contribute significantly to overall cosmic star formation beyond z > 1.5. Some stars formed in these environments may also explode as gamma-ray bursts (GRBs) and contribute to the population of 'dark' bursts. Here we present Very Large Array wideband radio-continuum observations of 15 heavily dust-obscured Swift GRBs to search for radio synchrotron emission associated with intense star formation in their host galaxies. Most of these targets (11) are not detected. Of the remaining four objects, one detection is marginal, and for two others we cannot yet rule out the contribution of a long-lived radio afterglow. The final detection is secure, but indicates a star formation rate (SFR) roughly consistent with the dust-corrected UV-inferred value. Most galaxies hosting obscured GRBs are therefore not forming stars at extreme rates, and the amount of optical extinction seen along a GRB afterglow sightline does not clearly correlate with the likelihood that the host has a sufficiently high SFR to be radio-detectable. While some submillimeter galaxies do readily produce GRBs, these GRBs are often not heavily obscuredsuggesting that the outer (modestly obscured) parts of these galaxies overproduce GRBs and the inner (heavily obscured) parts underproduce GRBs relative to their respective contributions to star formation, hinting at strong chemical or initial mass function gradients within these systems.

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

    SciTech Connect (OSTI)

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

    2014-08-20

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

  2. THE RADIO CONTINUUM STRUCTURE OF CENTAURUS A AT 1.4 GHz

    SciTech Connect (OSTI)

    Feain, I. J.; Cornwell, T. J.; Ekers, R. D.; Calabretta, M. R.; Norris, R. P.; O'Sullivan, S.; McClure-Griffiths, N. M.; Johnston-Hollitt, M.; Ott, J.; Lindley, E.; Gaensler, B. M.; Murphy, T.; Bland-Hawthorn, J.; Middelberg, E.; Jiraskova, S.

    2011-10-10

    A 45 deg{sup 2} radio continuum imaging campaign of the nearest radio galaxy, Centaurus A, is reported. Using the Australia Telescope Compact Array and the Parkes 64 m radio telescope at 1.4 GHz, the spatial resolution of the resultant image is {approx}600 pc ({approx}50''), resolving the {approx}>500 kpc giant radio lobes with approximately five times better physical resolution compared to any previous image, and making this the most detailed radio continuum image of any radio galaxy to date. In this paper, we present these new data and discuss briefly some of the most interesting morphological features that we have discovered in the images. The two giant outer lobes are highly structured and considerably distinct. The southern part of the giant northern lobe naturally extends out from the northern middle lobe with uniformly north-streaming emission. The well known northern loop is resolved into a series of semi-regular shells with a spacing of approximately 25 kpc. The northern part of the giant northern lobe also contains identifiable filaments and partial ring structures. As seen in previous single-dish images at lower angular resolution, the giant southern lobe is not physically connected to the core at radio wavelengths. Almost the entirety of the giant southern lobe is resolved into a largely chaotic and mottled structure which appears considerably different (morphologically) to the diffuse regularity of the northern lobe. We report the discovery of a vertex and a vortex near the western boundary of the southern lobe, two striking, high surface brightness features that are named based on their morphology and not their dynamics (which are presently unknown). The vortex and vertex are modeled as reaccelerated lobe emission due to shocks from the active galactic nucleus itself or from the passage of a dwarf elliptical galaxy through the lobe. Preliminary polarimetric and spectral index studies support a plasma reacceleration model and could explain the origin

  3. A novel radio frequency assisted heat pump dryer

    SciTech Connect (OSTI)

    Marshall, M.G.; Metaxas, A.C.

    1999-09-01

    This paper compares an experimental heat pump batch dryer with the implementation of volumetric Radio Frequency (RF) heating, in the combination drying of crushed brick particulate. Results are presented showing overall improvements in drying. A simplified mathematical drying model including the RF energy source has been developed using mass and energy conservation, confirming the experimental results. Drying is a widespread, energy intensive industrial unit operation. The economics of a drying process operation largely depend upon the dryers performance and ultimately the cost of energy consumption. To enhance the performance of a drying system, the damp air stream that exits the drying chamber can be recycled to reclaim the enthalpy of evaporation that it carries, by using a heat pump (Hodgett, 1976). However, because the medium that dries is still warm air, this system also suffers from heat transfer limitations, particularly towards the falling drying rate period. Such limitations in drying performance can be overcome with the use of Radio Frequency (RF) energy which generates heat volumetrically within the wet material by the combined mechanisms of dipole rotation and conduction effects which speeds up the drying process (Metaxas et al, 1983). Despite the clear advantages that heat pumps and high frequency heating offer for drying, the combination of these two techniques until recently has not been studied (Kolly et al, 1990; Marshall et al, 1995).A series of experiments carried out comprising a motor driven heat pump which was retro-fitted with the ability of imparting RF energy into a material at various stages of the drying cycle are described and compared with a mathematical model.

  4. TURBULENCE AND RADIO MINI-HALOS IN THE SLOSHING CORES OF GALAXY CLUSTERS

    SciTech Connect (OSTI)

    ZuHone, J. A.; Markevitch, M.; Giacintucci, S.

    2013-01-10

    A number of relaxed, cool-core galaxy clusters exhibit diffuse, steep-spectrum radio sources in their central regions, known as radio mini-halos. It has been proposed that the relativistic electrons responsible for the emission have been reaccelerated by turbulence generated by the sloshing of the cool core gas. We present a high-resolution MHD simulation of gas sloshing in a galaxy cluster coupled with subgrid simulations of relativistic electron acceleration to test this hypothesis. Our simulation shows that the sloshing motions generate turbulence on the order of {delta}v {approx} 50-200 km s{sup -1} on spatial scales of {approx}50-100 kpc and below in the cool core region within the envelope of the sloshing cold fronts, whereas outside the cold fronts, there is negligible turbulence. This turbulence is potentially strong enough to reaccelerate relativistic electron seeds (with initial {gamma} {approx} 100-500) to {gamma} {approx} 10{sup 4} via damping of magnetosonic waves and non-resonant compression. The seed electrons could remain in the cluster from, e.g., past active galactic nucleus activity. In combination with the magnetic field amplification in the core, these electrons then produce diffuse radio synchrotron emission that is coincident with the region bounded by the sloshing cold fronts, as indeed observed in X-rays and the radio. The result holds for different initial spatial distributions of pre-existing relativistic electrons. The power and the steep spectral index ({alpha} Almost-Equal-To 1-2) of the resulting radio emission are consistent with observations of mini-halos, though the theoretical uncertainties of the acceleration mechanisms are high. We also produce simulated maps of inverse-Compton hard X-ray emission from the same population of relativistic electrons.

  5. Radio observations reveal a smooth circumstellar environment around the extraordinary type Ib supernova 2012au

    SciTech Connect (OSTI)

    Kamble, Atish; Soderberg, Alicia M.; Margutti, Raffaella; Milisavljevic, Dan; Chakraborti, Sayan; Dittmann, Jason; Drout, Maria; Sanders, Nathan; Chomiuk, Laura; Medvedev, Mikhail; Chevalier, Roger; Chugai, Nikolai; Fransson, Claes; Nakar, Ehud

    2014-12-10

    We present extensive radio and X-ray observations of SN 2012au, an energetic, radio-luminous supernova of Type Ib that exhibits multi-wavelength properties bridging subsets of hydrogen-poor superluminous supernovae, hypernovae, and normal core-collapse supernovae. The observations closely follow models of synchrotron emission from a shock-heated circumburst medium that has a wind density profile (??r {sup 2}). We infer a sub-relativistic velocity for the shock wave v ? 0.2 c and a radius of r ? 1.4 10{sup 16}cm at 25 days after the estimated date of explosion. For a wind velocity of 1000 km s{sup 1}, we determine the mass-loss rate of the progenitor to be M-dot =3.610{sup ?6} M{sub ?} yr{sup ?1}, consistent with the estimates from X-ray observations. We estimate the total internal energy of the radio-emitting material to be E ? 10{sup 47} erg, which is intermediate to SN 1998bw and SN 2002ap. The evolution of the radio light curve of SN 2012au is in agreement with its interaction with a smoothly distributed circumburst medium and the absence of stellar shells ejected from previous outbursts out to r ? 10{sup 17} cm from the supernova site. We conclude that the bright radio emission from SN 2012au was not dissimilar from other core-collapse supernovae despite its extraordinary optical properties, and that the evolution of the SN 2012au progenitor star was relatively quiet, marked with a steady mass loss, during the final years preceding explosion.

  6. The highest redshift quasar at z = 7.085: A radio-quiet source

    SciTech Connect (OSTI)

    Momjian, E.; Carilli, C. L.; Walter, F.; Venemans, B. E-mail: ccarilli@nrao.edu E-mail: venemans@mpia.de

    2014-01-01

    We present 1-2 GHz Very Large Array A-configuration continuum observations on the highest redshift quasar known to date, the z = 7.085 quasar ULAS J112001.48+064124.3. The results show no radio continuum emission at the optical position of the quasar or its vicinity at a level of ?3? or 23.1 ?Jy beam{sup 1}. This 3? limit corresponds to a rest-frame 1.4 GHz luminosity density limit of L {sub ?,} {sub 1.4} {sub GHz} < 1.76 10{sup 24} W Hz{sup 1} for a spectral index of ? = 0, and L {sub ?,} {sub 1.4} {sub GHz} < 1.42 10{sup 25} W Hz{sup 1} for a spectral index of ? = 1. The rest-frame 1.4 GHz luminosity limits are L {sub rad} < 6.43 10{sup 6} L {sub ?} and L {sub rad} < 5.20 10{sup 7} L {sub ?} for ? = 0 and ? = 1, respectively. The derived limits for the ratio of the rest-frame 1.4 GHz luminosity density to the B-band optical luminosity density are R{sub 1.4}{sup ?}<0.53 and <4.30 for the above noted spectral indices, respectively. Given our upper limits on the radio continuum emission and the radio-to-optical luminosity ratio, we conclude that this quasar is radio-quiet and located at the low end of the radio-quiet distribution of high-redshift (z ? 6) quasars.

  7. EVIDENCE FOR INFRARED-FAINT RADIO SOURCES AS z > 1 RADIO-LOUD ACTIVE GALACTIC NUCLEI

    SciTech Connect (OSTI)

    Huynh, Minh T.; Norris, Ray P.; Siana, Brian; Middelberg, Enno

    2010-02-10

    Infrared-Faint Radio Sources (IFRSs) are a class of radio objects found in the Australia Telescope Large Area Survey which have no observable mid-infrared counterpart in the Spitzer Wide-area Infrared Extragalactic (SWIRE) survey. The extended Chandra Deep Field South now has even deeper Spitzer imaging (3.6-70 {mu}m) from a number of Legacy surveys. We report the detections of two IFRS sources in IRAC images. The non-detection of two other IFRSs allows us to constrain the source type. Detailed modeling of the spectral energy distribution of these objects shows that they are consistent with high-redshift (z {approx}> 1) active galactic nuclei.

  8. An improved integrally formed radio frequency quadrupole

    DOE Patents [OSTI]

    Abbott, S.R.

    1987-10-05

    An improved radio frequency quadrupole is provided having an elongate housing with an elongate central axis and top, bottom and two side walls symmetrically disposed about the axis, and vanes formed integrally with the walls, the vanes each having a cross-section at right angles to the central axis which tapers inwardly toward the axis to form electrode tips spaced from each other by predetermined distances. Each of the four walls, and the vanes integral therewith, is a separate structural element having a central lengthwise plane passing through the tip of the vane, the walls having flat mounting surfaces at right angles to and parallel to the control plane, respectively, which are butted together to position the walls and vane tips relative to each other. 4 figs.

  9. MicrobeWorld Radio and Communications Initiative

    SciTech Connect (OSTI)

    Barbara Hyde

    2006-11-22

    MicrobeWorld is a 90-second feature broadcast daily on more than 90 public radio stations and available from several sources as a podcast, including www.microbeworld.org. The feature has a strong focus on the use and adapatbility of microbes as alternative sources of energy, in bioremediation, their role in climate, and especially the many benefits and scientific advances that have resulting from decoding microbial genomes. These audio features are permanantly archived on an educational outreach site, microbeworld.org, where they are linked to the National Science Education Standards. They are also being used by instructors at all levels to introduce students to the multiple roles and potential of microbes, including a pilot curriculum program for middle-school students in New York.

  10. Scattering of Radio Frequency Waves by Edge Density Blobs in Tokamak Plasmas

    SciTech Connect (OSTI)

    Ram, A. K.; Hizanidis, K.; Kominis, Y.

    2011-12-23

    The density blobs and fluctuations present in the edge region of magnetic fusion devices can scatter radio frequency (RF) waves through refraction and diffraction. The scattering can diffuse the rays in space and in wave-vector space. The diffusion in space can make the rays miss their intended target region, while the diffusion in wave-vector space can broaden the wave spectrum and modify the wave damping and current profile.

  11. A radio frequency driven H{sup -} source for Linac4

    SciTech Connect (OSTI)

    Kuechler, D.; Meinschad, Th.; Peters, J.; Scrivens, R.

    2008-02-15

    Future requirements on higher beam intensity and brightness will need an upgrade of the present CERN accelerator chain. Linac4 will be an essential part of the upgrade of the proton accelerator facility. The source for this H{sup -} linac will be based on a copy of the DESY rf driven H{sup -} source. New possible radio frequency quadrupole alternatives (with different injection energies) and a pressing linac schedule made it necessary to develop a flexible two-source design.

  12. REVISITING SCALING RELATIONS FOR GIANT RADIO HALOS IN GALAXY CLUSTERS

    SciTech Connect (OSTI)

    Cassano, R.; Brunetti, G.; Venturi, T.; Kale, R.; Pratt, G. W.; Markevitch, M.

    2013-11-10

    Many galaxy clusters host megaparsec-scale radio halos, generated by ultrarelativistic electrons in the magnetized intracluster medium. Correlations between the synchrotron power of radio halos and the thermal properties of the hosting clusters were established in the last decade, including the connection between the presence of a halo and cluster mergers. The X-ray luminosity and redshift-limited Extended GMRT Radio Halo Survey provides a rich and unique dataset for statistical studies of the halos. We uniformly analyze the radio and X-ray data for the GMRT cluster sample, and use the new Planck Sunyaev-Zel'dovich (SZ) catalog to revisit the correlations between the power of radio halos and the thermal properties of galaxy clusters. We find that the radio power at 1.4 GHz scales with the cluster X-ray (0.1-2.4 keV) luminosity computed within R{sub 500} as P{sub 1.4}∼L{sup 2.1±0.2}{sub 500}. Our bigger and more homogenous sample confirms that the X-ray luminous (L{sub 500} > 5 × 10{sup 44} erg s{sup –1}) clusters branch into two populations—radio halos lie on the correlation, while clusters without radio halos have their radio upper limits well below that correlation. This bimodality remains if we excise cool cores from the X-ray luminosities. We also find that P{sub 1.4} scales with the cluster integrated SZ signal within R{sub 500}, measured by Planck, as P{sub 1.4}∼Y{sup 2.05±0.28}{sub 500}, in line with previous findings. However, contrary to previous studies that were limited by incompleteness and small sample size, we find that 'SZ-luminous' Y{sub 500} > 6 × 10{sup –5} Mpc{sup 2} clusters show a bimodal behavior for the presence of radio halos, similar to that in the radio-X-ray diagram. Bimodality of both correlations can be traced to clusters dynamics, with radio halos found exclusively in merging clusters. These results confirm the key role of mergers for the origin of giant radio halos, suggesting that they trigger the relativistic particle

  13. ON THE ORIGIN OF RADIO EMISSION FROM MAGNETARS

    SciTech Connect (OSTI)

    Szary, Andrzej; Melikidze, George I.; Gil, Janusz

    2015-02-10

    Magnetars are the most magnetized objects in the known universe. Powered by the magnetic energy, and not by the rotational energy as in the case of radio pulsars, they have long been regarded as a completely different class of neutron stars. The discovery of pulsed radio emission from a few magnetars weakened the idea of a clean separation between magnetars and normal pulsars. We use the partially screened gap (PSG) model to explain radio emission of magnetars. The PSG model requires that the temperature of the polar cap is equal to the so-called critical value, i.e., the temperature at which the thermal ions outflowing from the stellar surface screen the acceleration gap. We show that a magnetar has to fulfill the temperature, power, and visibility conditions in order to emit radio waves. First, in order to form PSG, the residual temperature of the surface has to be lower than the critical value. Second, since the radio emission is powered by the rotational energy, it has to be high enough to enable heating of the polar cap by backstreaming particles to the critical temperature. Finally, the structure of the magnetic field has to be altered by magnetospheric currents in order to widen a radio beam and increase the probability of detection. Our approach allows us to predict whether a magnetar can emit radio waves using only its rotational period, period derivative, and surface temperature in the quiescent mode.

  14. HOST GALAXIES OF X-SHAPED RADIO SOURCES

    SciTech Connect (OSTI)

    Springmann, A.; Cheung, C.

    2007-01-01

    Most radiation from galaxies containing active galactic nuclei (AGNs) is emitted not by the stars composing the galaxy, but from an active source at the galactic center, most likely a supermassive black hole. Of particular interest are radio galaxies, active galaxies that emit much of their radiation at radio wavelengths. Within each radio galaxy, an AGN powers a pair of collimated jets of relativistic particles, forming a pair of giant lobes at the end of the jets and thus giving a characteristic double-lobed appearance. A particular class of radio galaxies has an “X”-or winged-shaped morphology: in these, two pairs of lobes appear to originate from the galactic center, producing a distinctive X-shape. Two main mechanisms have been proposed to explain the X-shape morphology: one being a realignment of the black hole within the AGN and the second positing that the radio jets are expanding into an asymmetric medium, causing backflow and producing secondary wings. By analyzing radio host galaxy shapes, the distribution of the stellar mass is compared to the differing model expectations regarding the distribution of the surrounding gas and stellar material about the AGN. Results show elliptical host galaxies with an orthogonal offset between the semi-major axis of the host galaxy and the secondary radio wings, which lends support to the hydrodynamical model. However, results also show circular host galaxies with radio wings, making the realignment scenario a more likely model to describe the formation of these X-shaped radio sources.

  15. Presented

    Office of Scientific and Technical Information (OSTI)

    Paul W. Cooper Sandia National Laboratories Albuquerque, New Mexico U.S.A. 87185-1156 ... or related to those of Naoum Oah.Naoum, Z ges Schiess-Sprenlzetoffw(sic), 27 June 1932). ...

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    ... Mesh-Retrospective Bus: Good at board level, does not extend well * Transmission line ... Deeply scaled technologies Aging related faults Lack of burn-in? Variability increases ...

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    of Clean and Efficient Combustion with Alternative Fuels Author(s): Jacqueline Chen, SNL | Download File: ChenCombustion.pdf | pdf | 30 MB Rational Catalyst Design for...

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    | ppt | 6.8 MB Goals for the next Greenbook February 22, 2001 | Author(s): Doug Rotman | Download File: Rotman.Greenbook.goals.ppt | ppt | 16 KB See also notes page for W....

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    File Transfer Best Practices October 2, 2008 | Author(s): David Turner | Download File: turner.pdf | pdf | 197 KB Enabling Grid File Transfers: The NERSC CA October 2, 2008 | ...

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    May 29, 2003 | Author(s): Richard Gerber | Download File: ... May 29, 2003 | Author(s): Bruce Cohen & W. M. Nevins | ... May 29, 2003 | Author(s): David Turner | Download File: ...

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    May 29, 2003 | Author(s): Bruce Cohen & W. M. Nevins | ... May 29, 2003 | Author(s): David Turner | Download File: ... May 29, 2003 | Author(s): Richard Gerber | Download File: ...

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    May 30, 2003 | Author(s): David Skinner | Download File: ... May 30, 2003 | Author(s): Richard Gerber | Download File: ... May 29, 2003 | Author(s): Bruce Cohen & W. M. Nevins | ...

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    | Author(s): Bill Kramer | Report on Graphics Packages January 28, 1997 | Author(s): Stephen Lau, Nancy Johnston, Terry Ligocki | Download File: NERSC1.pdf | pdf | 85 KB Report...

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    with Plasmas and Targets (HEDLP and IFE) March 19, 2013 | Author(s): Alex Friedman, LLNL | Download File: Friedman-FESNERSC-2013slides-v1a.pdf | pdf | 13 MB Kinetic...

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    | 2.8 MB Climate Science for a Sustainable Energy Future September 11, 2012 | Author(s): David Bader | Download File: CSSEFBader.pdf | pdf | 21 MB Susan Gregurick (DOE) Download...

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    File: profilingNUG08.pdf | pdf | 1.9 MB Debugging with DDT October 2, 2008 | Author(s): David Lecomber | Source: Allinea Software | Download File: DDT-lecomber.pdf | pdf | 1.1 MB...

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    Environment, Running Jobs, File Systems, Performance October 18, 2010 | Author(s): David Turner | Download File: Carver-Intro-Turner.pdf | pdf | 443 KB Introduction to MPI...

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    Susan Gregurick (DOE) Download File: September-2012-BER-NERSC-Overview.pdf | pdf | 2.2 MB Harvey Wasserman Download File: NERSC-IntroHarvey.pdf | pdf | 1.9 MB Case Study: Climate...

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    server. The area of remote visualization is an ongoing research topic in the field of visualization. Typical remote visualization techniques have been of the brute force...

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    New technical choice models in the Industrial Demand Module, with steel and paper results For 2016 EIA Conference July 12, 2016 | Washington, DC By Kelly Perl Team Leader, Industrial Energy Consumption and Efficiency Analysis Team Overview * Definitions - What is a process flow industry? - What is primary production? * AEO2016 cases * AEO2016 Industrial results for all industries * AEO2016 Steel Results: Energy consumption, Technology choice, and selected side cases * AEO2016 Paper results:

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    | Download File: JacquardMPIandInterconnect.ppt | ppt | 125 KB Compiling: Pathscale Fortran, C, C++; mpif90, mpicc, mpicxx, recommended compiler options, useful compiler...

  14. Presented

    Office of Scientific and Technical Information (OSTI)

    a function of the conditions at which the test is run. This paper describes the various tests used, discusses the results of each test and makes detailed commentary on what the ...

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    Author(s): James Davenport, BES | Download File: DavenportNERSC-BES-10-8-2013.pdf | pdf | 12 MB Direct Numerical Simulation of the Poisson-Nernst-Planck Equation in Clay Author(s): ...

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    Author(s): Andrew Felmy, PNNL | Download File: Felmy.pdf | pdf | 7.1 MB Direct Numerical Simulation of the Poisson-Nernst-Planck Equation in Clay Author(s): Carl I. Steefel, LBNL | ...

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    Bill Kramer | Tertiary Storage January 28, 1997 | Author(s): Keith Fitzgerald, Harvard Holmes | Download File: Tertiary-Storage.pdf | pdf | 173 KB Report on Graphics Packages...

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    IBM Compiler Optimization Options June 4, 2002 | Author(s): M. Stewart | Download File: optarg.ppt | ppt | 53 KB All of the IBM supplied compilers produce unoptimized code by...

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    March 19, 2013 | Author(s): Alex Friedman, LLNL | Download File: Friedman-FESNERSC-2013slides-v1a.pdf | pdf | 13 MB Kinetic Modelling in ICF March 19, 2013 | Author(s): Chuang Ren, ...

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    March 19, 2013 | Author(s): Alex Friedman, LLNL | Download File: ndcx40g.r6000res1280ipstep5faster.mov | mov | 26 MB Kinetic Modelling in ICF March 19, 2013 | Author(s): Chuang ...

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    1997 | Author(s): Bill Kramer | Tertiary Storage January 28, 1997 | Author(s): Keith Fitzgerald, Harvard Holmes | Download File: Tertiary-Storage.pdf | pdf | 173 KB Report on...

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    for Fields Movie March 19, 2013 | Author(s): Homa Karimabadi, UCSD | Download File: dtf.mpg | mpg | 5.5 MB Time Stepping for Particles Movie March 19, 2013 | Author(s): Homa...

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    ... Key Distribution Task Force (KDTF)--Chair: Bill Johnston, johnston@george.lbl.gov. Coordinates issues related to the deployment of secure keys to be used by e-mail technologies ...

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    November 27, 2012 | Author(s): James Siegrist | Download File: Siegrist-HEP-Overview.pdf | pdf | 3.7 MB Perspectives from High Energy Physics Steven Gottlieb: GPU & MIC for Lattice ...

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    November 27, 2012 | Author(s): James Siegrist | Download File: Siegrist-HEP-Overview.pdf | pdf | 3.7 MB Perspectives from High Energy Physics Julian Borrill: Cosmic Microwave ...

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    November 27, 2012 | Author(s): Barbara Helland | Download File: Helland.pdf | pdf | 5.5 MB NERSC-HEP Requirements Review James Siegrist: Perspectives from High Energy Physics ...

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    James Siegrist: Perspectives from High Energy Physics November 27, 2012 | Author(s): James Siegrist | Download File: Siegrist-HEP-Overview.pdf | pdf | 3.7 MB Perspectives from High ...

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    Horst Simon | Scheduled for Monday, November 18, 2002 at the Marriot Inner Harbor Hotel West Ballroom, in Baltimore, Maryland. The meeting will coincide with SC2002, the...

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    Research | Plans for NERSC's New Building February 3, 2012 | Author(s): Howard Walter, NERSC | Download File: CRT-NUG-120203.pdf | pdf | 7.3 MB User Requirements Gathered...

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    NUGEX Elections Charter Help Staff Blogs Request Repository Mailing List Need Help? Out-of-hours Status and Password help Call operations: 1-800-66-NERSC, option 1 or 510-486-6821 ...

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    | Category Performance Evaluation Activites at NERSC May 29, 2003 | Author(s): Adrian Wong | Download File: WongNERSCPerfEvalActivities.ppt | ppt | 195 KB Seaborg Code...

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    Bill Kramer | Tertiary Storage January 28, 1997 | Author(s): Keith Fitzgerald, Harvard Holmes | Download File: Tertiary-Storage.pdf | pdf | 173 KB Report on Graphics...

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    Forecasting Short-Term Crude Oil Prices EIA Workshop on Financial and Physical Oil market Linkages September 29, 2015 / Washington, D.C. By Rebecca George Office of Energy Markets and Financial Analysis Energy Information Administration Brent crude oil price forecast 2 Nominal dollars per barrel Note: This is not a Short-Term Energy Outlook projection Forecasting Crude Oil Prices - EIA Financial Workshop September 29, 2015 30 40 50 60 70 80 90 100 Brent spot Model Forecast EIA implementation of

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    20th Century Reanalysis September 11, 2012 | Author(s): Gil Compo | Download File: Compo.pdf | pdf | 2.4 MB BER/NERSC Requirements Gathering Workshop September 11, 2012 | Author(s): Yukiko Sekine, DOE ASCR | Download File: YS-BER-NERSCWorkshopPresen2.pdf | pdf | 592 KB Case Study: Climate Change Simula2ons with the Community Earth System Model (CESM) September 11, 2012 | Author(s): Tom Bettge | Download File: Bettge.pdf | pdf | 8.2 MB Climate Science for a Sustainable Energy Future September 11,

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    Requirements Reviews Overview Author(s): David Goodwin, ASCR | Meeting Goals and Process Author(s): Richard Gerber | Download File: Gerber-Overview.pdf | pdf | 1.4 MB NERSC Ten-Year Strategy Author(s): Sudip Dosanjh, NERSC | Download File: SudipDosanjh.pdf | pdf | 19 MB Large Scale 3D Geophysical Inversion & Imaging Author(s): Gregory Newman, LBNL | Download File: Newman.pdf | pdf | 4.4 MB Computational Studies in Molecular Geochemistry Author(s): Andrew Felmy, PNNL | Download File:

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    ASCR Requirements Gathering March 19, 2013 | Author(s): David Goodwin, DOE ASCR | Download File: ASCR-Requirements-Gathering.pdf | pdf | 207 KB FES Program Summary & Status March 19, 2013 | Author(s): John Mandrekas, DOE FES | Download File: FES-NERSCMandrekas032013Final.pdf | pdf | 13 MB FES Review Overview and Goals March 19, 2013 | Author(s): Richard A. Gerber | Download File: Gerber-Overview.pdf | pdf | 1.4 MB Centre for Simulation of Wave-Plasma Interactions (CSWPI) March 19, 2013 |

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    Perspectives on Integrated Whole-Device Modeling at NERSC March 20, 2013 | Author(s): A. Y. Pankin, A. H. Kritz, and T. Rafiq | Download File: NerscIMpankin-2.pdf | pdf | 363 KB ASCR Requirements Gathering March 19, 2013 | Author(s): David Goodwin, DOE ASCR | Download File: ASCR-Requirements-Gathering.pdf | pdf | 207 KB FES Program Summary & Status March 19, 2013 | Author(s): John Mandrekas, DOE FES | Download File: FES-NERSCMandrekas032013Final.pdf | pdf | 13 MB FES Review Overview and

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  1. Presentations

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    Meeting Goals & Process December 26, 2012 | Author(s): Harvey Wasserman | Download File: LogisticsHarveyWasserman.pdf | pdf | 1.3 MB Meeting Goals & Process James Siegrist: Perspectives from High Energy Physics November 27, 2012 | Author(s): James Siegrist | Download File: Siegrist-HEP-Overview.pdf | pdf | 3.7 MB Perspectives from High Energy Physics Steven Gottlieb: GPU & MIC for Lattice Field Theory November 27, 2012 | Author(s): Steven Gottlieb | Download File: LQCD-Gottlieb.pdf |

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    Andrew Connolly : The Large Synoptic Survey Telescope (LSST) November 27, 2012 | Author(s): Andrew Connolly (University of Washington) | Download File: LSST-Connolly.pdf | pdf | 3.9 MB The Large Synoptic Survey Telescope (LSST) Barbara Helland: NERSC-HEP Requirements Review November 27, 2012 | Author(s): Barbara Helland | Download File: Helland.pdf | pdf | 5.5 MB NERSC-HEP Requirements Review Cameron Geddes: Plasma Accelerator Simulation Using Laser and Particle Beam Drivers Author(s): Cameron

  3. Presentations

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    James Siegrist: Perspectives from High Energy Physics November 27, 2012 | Author(s): James Siegrist | Download File: Siegrist-HEP-Overview.pdf | pdf | 3.7 MB Perspectives from High Energy Physics Steven Gottlieb: GPU & MIC for Lattice Field Theory November 27, 2012 | Author(s): Steven Gottlieb | Download File: LQCD-Gottlieb.pdf | pdf | 642 KB GPU & MIC for Lattice Field Theory Barbara Helland: NERSC-HEP Requirements Review November 27, 2012 | Author(s): Barbara Helland | Download File:

  4. Presentations

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

    Report on Vectorization Application Review January 27, 1997 | Author(s): S.C. Jardin | Download File: Report-on-Vectorization-Application-Review.pdf | pdf | 93 KB State of NERSC address January 28, 1997 | Author(s): Horst SImon | Download File: State-of-NERSC-Address.pdf | pdf | 176 KB Report on Users' Questions about NERSC 1997 January 28, 1997 | Author(s): Ricky Kendall | Download File: Questions-for-the-ERSUG-Meeting.pdf | pdf | 80 KB Report on Graphics Packages January 28, 1997 | Author(s):

  5. Presentations

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

    State of NERSC address January 28, 1997 | Author(s): Horst SImon | Download File: State-of-NERSC-Address.pdf | pdf | 176 KB Report on Users' Questions about NERSC 1997 January 28, 1997 | Author(s): Ricky Kendall | Download File: Questions-for-the-ERSUG-Meeting.pdf | pdf | 80 KB Report on Graphics Packages January 28, 1997 | Author(s): Stephen Lau, Nancy Johnston, Terry Ligocki | Download File: NERSC1.pdf | pdf | 85 KB The Scientific Computing Group January 28, 1997 | Author(s): Tammy Welcome |

  6. Presentations

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

    DOE 2000 January 28, 1997 | Author(s): Jim McGraw | Download File: DOE-2000.pdf | pdf | 48 KB Overview of NERSC at LBNL January 28, 1997 | Author(s): Bill Kramer | Report on Graphics Packages January 28, 1997 | Author(s): Stephen Lau, Nancy Johnston, Terry Ligocki | Download File: NERSC1.pdf | pdf | 85 KB Report on Graphics Packages January 28, 1997 | Author(s): Steve Lau | Report on Users' Questions about NERSC 1997 January 28, 1997 | Author(s): Ricky Kendall | Download File:

  7. Presentations

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

    Introduction to the Cray T3E System April 28, 1999 | Author(s): Mark Durst | Download File: t3e.ppt | ppt | 233 KB This talk will introduce the Cray T3E system, mcurie.nersc.gov. We will describe the system hardware, available software, and common usage modes and methods. Introduction to the Cray J-90 System April 28, 1999 | Author(s): Tom DeBoni | Download File: J90IntroERSUG.ppt | ppt | 116 KB This talk will introduce the Cray J-90 systems. There are six such systems, five of which are

  8. Presentations

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

    Introduction to the NERSC HPCF (High Performance Computing Facilities) June 7, 2000 | Author(s): Thomas M. DeBoni | Download File: IntroTalk.ppt | ppt | 228 KB This talk will briefly introduce the NERSC hardware and software of the computational systems, mass storage systems, and auxiliary servers. It will also touch on matters of usage, access, and information sources. The intent is to establish a baseline of knowledge for all attendees. The IBM SP, Evolution from Phase I to Phase II June 7,

  9. Presentations

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

    Update on security issues with FTP June 3, 2002 | Author(s): NERSC staff | Download File: NUGMeetingFTPUpdateJune2002.ppt | ppt | 62 KB Introducing Juan Meza - the new head of NERSC HPC Research Dept June 3, 2002 | Author(s): Juan Meza | Download File: NUG.060302.ppt | ppt | 471 KB Visualization Update (1 of 2) June 3, 2002 | Author(s): Ken Schwartz | Download File: NUG060302-ks.ppt | ppt | 3.4 MB (See Visualization update (2 of 2) for movies by Ken Schwartz) Visualization Update (2 of 2) June

  10. Presentations

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

    A Report on the ACTS Toolkit June 4, 2002 | Author(s): O. Marques | Download File: NUG.1.ppt | ppt | 956 KB The ACTS (Advanced Computational Testing and Simulation) Toolkit is a set of computational tools developed primarily at DOE laboratories and is aimed at simplifying the solution of common and important computational problems on parallel machines. The tools fall into four broad categories: numerical, and support for code development, execution and library development. In the talk we will

  11. Presentations

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

    IBM Compiler Optimization Options June 4, 2002 | Author(s): M. Stewart | Download File: optarg.ppt | ppt | 53 KB All of the IBM supplied compilers produce unoptimized code by default. Specific optimization command line options must be supplied to the compilers in order for them to produce optimized code. In this talk, several of the more useful optimization options for the IBM Fortran, C, and C++ compilers are described and recommendations will be given on which of them are most useful.

  12. Presentations

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

    Performance Evaluation Activites at NERSC May 29, 2003 | Author(s): Adrian Wong | Download File: WongNERSCPerfEvalActivities.ppt | ppt | 195 KB Seaborg Code Scalability Project May 29, 2003 | Author(s): Richard Gerber | Download File: Gerberusgscalingnew.ppt | ppt | 186 KB Green's function Monte Carlo Calculations of Light Nuclei May 29, 2003 | Author(s): Steven Pieper | Download File: Piepertalk.pdf | pdf | 148 KB Lattice QCD in Extreme Environments May 29, 2003 | Author(s): Don Sinclair |

  13. Presentations

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

    Compiler-based Optimization June 24, 2004 | Author(s): Mike Stewart | URL: http://ipvideo.lbl.gov:8080/ramgen/Stewart.rm Download File: optarg.final.ppt | ppt | 185 KB Libraries and Their Effects on Performance June 24, 2004 | Author(s): Tom DeBoni | URL: http://ipvideo.lbl.gov:8080/ramgen/Deboni.rm Download File: JuneLibrarySlides.ppt | ppt | 2 MB ACTS Components (such as such as ScaLAPACK, TAU, SuperLU, and PETSc) and Case Studies of Their Use June 24, 2004 | Author(s): Osni Marques | URL:

  14. Presentations

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

    Science Driven Computing: NERSC's Five-Year Plan for 2005 - 2010 October 4, 2005 | Author(s): Horst Simon and Bill Kramer | Download File: NUGStrategyOverview.ppt | ppt | 4.8 MB NERSC/LBNL Data Analytics Project October 4, 2005 | Author(s): Wes Bethel | Download File: NERSC-analytics-04Oct2005.pdf | pdf | 440 KB Progress in Supercomputing: The Top Three Breakthroughs of the Last 20 Years and the Top Three Challenges for the Next 20 Years October 4, 2005 | Author(s): Horst Simon | Download File:

  15. Presentations

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

    Compiling: Pathscale Fortran, C, C++; mpif90, mpicc, mpicxx, recommended compiler options, useful compiler options, libraries, porting from Seaborg, porting from other Linux clusters October 3, 2005 | Author(s): Michael Stewart | Download File: Compiling.mstewart.ppt | ppt | 1.2 MB High Speed Interconnect and MVAPICH: InfiniBand characteristics (latency, bandwidth), network topology, differences from Seaborg, MVAPICH overview October 3, 2005 | Author(s): Bill Saphir | Download File:

  16. Presentations

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

    Bassi Overview and Status: a high-level description of the system, its configuration, processors, interconnect, file systems, and software June 13, 2006 | Author(s): Richard A. Gerber | Download File: BassiintroNUG06.ppt | ppt | 14 MB Benchmark Performance on Bassi: performance is compared to Seaborg, Jacquard, and a variety of other HPC platforms. June 13, 2006 | Author(s): Jonathan Carter | Download File: NUGJune2006Bench.ppt | ppt | 1.8 MB Benchmarking and System Architecture Updates

  17. Presentations

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

    NERSC Updates Status; current activities and projects Roadmap, future projects, and impact of potential continuing resolution September 17, 2007 | Author(s): Bill Kramer | Download File: Kramer-NERSCIntro-v2.ppt | ppt | 23 MB Download File: Kramer-NERSCIntro-v2.pdf | pdf | 13 MB HPSS Update September 17, 2007 | Author(s): Jason Hick | Download File: Hick-NUGHPSSUpdate.ppt | ppt | 1.2 MB DOE's Operational Review of ORNL, NERSC and PNNL September 17, 2007 | Author(s): Stephane Ethier | Download

  18. Presentations

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

    Advanced code optimization cache blocking, prefetching, and OpenMP September 20, 2007 | Author(s): John Levesque | Download File: Levesque-cacheblockingandprefetch.ppt | ppt | 115 KB PGI compiler - How to use the compiler; flags for porting, debugging and optimization September 18, 2007 | Author(s): John Levesque | Download File: Levesque-Compiler.ppt | ppt | 256 KB XT4 socket optimization, with examples September 18, 2007 | Author(s): John Levesque | Download File:

  19. Presentations

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

    A New Debugger for NERSC: DDT September 17, 2007 | Author(s): Katie Antypas | Download File: Antypas-NUG2007DDToverview.ppt | ppt | 960 KB ACTS Collection September 18, 2007 | Author(s): Osni Marques | Download File: Marques-ACTS.ppt | ppt | 14 MB Adaptive Mesh Simulations of Pellet Injection into Tokamaks September 17, 2007 | Author(s): Ravi Samtaney | Download File: Samtaney-NERSC.pdf | pdf | 4.7 MB Advanced code optimization cache blocking, prefetching, and OpenMP September 20, 2007 |

  20. Presentations

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

    2007/2008 User Survey Result October 2, 2008 | Author(s): Francesca Verdier | Download File: NUG2008-UserSurvey.pdf | pdf | 175 KB Accelerating X Windows with NX* October 2, 2008 | Author(s): Janet Jacbsen | Download File: NXDemo.pdf | pdf | 52 KB Debugging with DDT October 2, 2008 | Author(s): David Lecomber | Source: Allinea Software | Download File: DDT-lecomber.pdf | pdf | 1.1 MB Defining Best Practices for Network Tuning October 2, 2008 | Author(s): Brent Draney | Download File:

  1. Presentations

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

    Data Analysis Using the R Project for Statistical Computing October 7, 2009 | Author(s): Daniela Ushizima | Download File: UshizimaD.pdf | pdf | 7.8 MB NERSC Accomplishments and Plans October 7, 2009 | Author(s): Kathy Yelick | Download File: YelickK.pdf | pdf | 34 MB Hopper, the new NERSC-6 System October 7, 2009 | Author(s): Jonathan Carter | Download File: CarterJ.pdf | pdf | 2.5 MB 2009 User Survey Results October 7, 2009 | Author(s): Francesca Verdier | Download File: VerdierF.pdf | pdf |

  2. Presentations

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

    Survey Results October 7, 2009 | Author(s): Francesca Verdier | Download File: VerdierF.pdf | pdf | 2.9 MB 2010 Allocations October 7, 2009 | Author(s): Francesca Verdier |...

  3. Presentations

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

    20th Century Reanalysis September 11, 2012 | Author(s): Gil Compo | Download File: Compo.pdf | pdf | 2.4 MB BERNERSC Requirements Gathering Workshop September 11, 2012 |...

  4. Presentations

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

    18, 2007 | Author(s): Matt Andrews | Download File: AndrewsNGF.ppt | ppt | 469 KB Benchmarking and System Architecture Updates September 18, 2007 | Author(s): John Shalf |...

  5. Presentations

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

    Michael Stewart | Download File: optarg.bassi.final.ppt | ppt | 271 KB Experiences benchmarking GTC on High Performance Computers June 13, 2006 | Author(s): Stephane Ethier |...

  6. Presentations

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

    Date (high-low) | Source | Category Recent Progress on Lattice QCD with MIMD Parallel Computers July 12, 1994 | Author(s): Claude Bernard | Download File: bernard.pdf | pdf | 5.1...

  7. Method and apparatus for radio frequency ceramic sintering

    DOE Patents [OSTI]

    Hoffman, Daniel J.; Kimrey, Jr., Harold D.

    1993-01-01

    Radio frequency energy is used to sinter ceramic materials. A coaxial waveguide resonator produces a TEM mode wave which generates a high field capacitive region in which a sample of the ceramic material is located. Frequency of the power source is kept in the range of radio frequency, and preferably between 60-80 MHz. An alternative embodiment provides a tunable radio frequency circuit which includes a series input capacitor and a parallel capacitor, with the sintered ceramic connected by an inductive lead. This arrangement permits matching of impedance over a wide range of dielectric constants, ceramic volumes, and loss tangents.

  8. Method and apparatus for radio frequency ceramic sintering

    DOE Patents [OSTI]

    Hoffman, D.J.; Kimrey, H.D. Jr.

    1993-11-30

    Radio frequency energy is used to sinter ceramic materials. A coaxial waveguide resonator produces a TEM mode wave which generates a high field capacitive region in which a sample of the ceramic material is located. Frequency of the power source is kept in the range of radio frequency, and preferably between 60-80 MHz. An alternative embodiment provides a tunable radio frequency circuit which includes a series input capacitor and a parallel capacitor, with the sintered ceramic connected by an inductive lead. This arrangement permits matching of impedance over a wide range of dielectric constants, ceramic volumes, and loss tangents. 6 figures.

  9. High-power radio-frequency attenuation device

    DOE Patents [OSTI]

    Kerns, Q.A.; Miller, H.W.

    1981-12-30

    A resistor device for attenuating radio frequency power includes a radio frequency conductor connected to a series of fins formed of high relative magnetic permeability material. The fins are dimensional to accommodate the skin depth of the current conduction therethrough, as well as an inner heat conducting portion where current does not travel. Thermal connections for air or water cooling are provided for the inner heat conducting portions of each fin. Also disclosed is a resistor device to selectively alternate unwanted radio frequency energy in a resonant cavity.

  10. RADIO SIGNATURES OF CORONAL-MASS-EJECTION-STREAMER INTERACTION AND SOURCE DIAGNOSTICS OF TYPE II RADIO BURST

    SciTech Connect (OSTI)

    Feng, S. W.; Chen, Y.; Kong, X. L.; Li, G.; Song, H. Q.; Feng, X. S.; Liu Ying

    2012-07-01

    It has been suggested that type II radio bursts are due to energetic electrons accelerated at coronal shocks. Radio observations, however, have poor or no spatial resolutions to pinpoint the exact acceleration locations of these electrons. In this paper, we discuss a promising approach to infer the electron acceleration location by combining radio and white light observations. The key assumption is to relate specific morphological features (e.g., spectral bumps) of the dynamic spectra of type II radio bursts to imaging features (e.g., coronal mass ejection (CME) going into a streamer) along the CME (and its driven shock) propagation. In this study, we examine the CME-streamer interaction for the solar eruption dated on 2003 November 1. The presence of spectral bump in the relevant type II radio burst is identified, which is interpreted as a natural result of the shock-radio-emitting region entering the dense streamer structure. The study is useful for further determinations of the location of type II radio burst and the associated electron acceleration by CME-driven shock.

  11. PRECISE {gamma}-RAY TIMING AND RADIO OBSERVATIONS OF 17 FERMI {gamma}-RAY PULSARS

    SciTech Connect (OSTI)

    Ray, P. S.; Wolff, M. T.; Grove, J. E.; Gwon, C.; Kerr, M.; Parent, D.; Makeev, A.; Abdo, A. A.; Guillemot, L.; Freire, P. C. C.; Kramer, M.; Ransom, S. M.; Rea, N.; Roberts, M. S. E.; Camilo, F.; Dormody, M.; Harding, A. K.; Johnston, S.; Keith, M.; Michelson, P. F.

    2011-06-01

    We present precise phase-connected pulse timing solutions for 16 {gamma}-ray-selected pulsars recently discovered using the Large Area Telescope (LAT) on the Fermi Gamma-ray Space Telescope plus one very faint radio pulsar (PSR J1124-5916) that is more effectively timed with the LAT. We describe the analysis techniques including a maximum likelihood method for determining pulse times of arrival from unbinned photon data. A major result of this work is improved position determinations, which are crucial for multiwavelength follow-up. For most of the pulsars, we overlay the timing localizations on X-ray images from Swift and describe the status of X-ray counterpart associations. We report glitches measured in PSRs J0007+7303, J1124-5916, and J1813-1246. We analyze a new 20 ks Chandra ACIS observation of PSR J0633+0632 that reveals an arcminute-scale X-ray nebula extending to the south of the pulsar. We were also able to precisely localize the X-ray point source counterpart to the pulsar and find a spectrum that can be described by an absorbed blackbody or neutron star atmosphere with a hard power-law component. Another Chandra ACIS image of PSR J1732-3131 reveals a faint X-ray point source at a location consistent with the timing position of the pulsar. Finally, we present a compilation of new and archival searches for radio pulsations from each of the {gamma}-ray-selected pulsars as well as a new Parkes radio observation of PSR J1124-5916 to establish the {gamma}-ray to radio phase offset.

  12. CONTRIBUTION OF GAMMA-RAY-LOUD RADIO GALAXIES' CORE EMISSIONS...

    Office of Scientific and Technical Information (OSTI)

    CORE EMISSIONS TO THE COSMIC MeV AND GeV GAMMA-RAY BACKGROUND RADIATION Citation Details In-Document Search Title: CONTRIBUTION OF GAMMA-RAY-LOUD RADIO GALAXIES' CORE ...

  13. EERE Success Story-Radio Frequency Diesel Particulate Filter...

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

    Filter Sensor Reduces Fuel Consumption, Wins R&D 100 Award EERE Success Story-Radio Frequency Diesel Particulate Filter Sensor Reduces Fuel Consumption, Wins R&D 100 Award October ...

  14. Trirotron: triode rotating beam radio frequency amplifier

    DOE Patents [OSTI]

    Lebacqz, Jean V.

    1980-01-01

    High efficiency amplification of radio frequencies to very high power levels including: establishing a cylindrical cloud of electrons; establishing an electrical field surrounding and coaxial with the electron cloud to bias the electrons to remain in the cloud; establishing a rotating electrical field that surrounds and is coaxial with the steady field, the circular path of the rotating field being one wavelength long, whereby the peak of one phase of the rotating field is used to accelerate electrons in a beam through the bias field in synchronism with the peak of the rotating field so that there is a beam of electrons continuously extracted from the cloud and rotating with the peak; establishing a steady electrical field that surrounds and is coaxial with the rotating field for high-energy radial acceleration of the rotating beam of electrons; and resonating the rotating beam of electrons within a space surrounding the second field, the space being selected to have a phase velocity equal to that of the rotating field to thereby produce a high-power output at the frequency of the rotating field.

  15. Antenna unit and radio base station therewith

    DOE Patents [OSTI]

    Kuwahara, Mikio; Doi, Nobukazu; Suzuki, Toshiro; Ishida, Yuji; Inoue, Takashi; Niida, Sumaru

    2007-04-10

    Phase and amplitude deviations, which are generated, for example, by cables connecting an array antenna of a CDMA base station and the base station, are calibrated in the baseband. The base station comprises: an antenna apparatus 1; couplers 2; an RF unit 3 that converts a receive signal to a baseband signal, converts a transmit signal to a radio frequency, and performs power control; an A/D converter 4 for converting a receive signal to a digital signal; a receive beam form unit 6 that multiplies the receive signal by semi-fixed weight; a despreader 7 for this signal input; a time-space demodulator 8 for demodulating user data; a despreader 9 for probe signal; a space modulator 14 for user data; a spreader 13 for user signal; a channel combiner 12; a Tx calibrater 11 for controlling calibration of a signal; a D/A converter 10; a unit 16 for calculation of correlation matrix for generating a probe signal used for controlling an Rx calibration system and a TX calibration system; a spreader 17 for probe signal; a power control unit 18; a D/A converter 19; an RF unit 20 for probe signal; an A/D converter 21 for signal from the couplers 2; and a despreader 22.

  16. Radio frequency ion source operated with field effect transistor based radio frequency system

    SciTech Connect (OSTI)

    Ando, A.; Komuro, A.; Matsuno, T.; Tsumori, K.; Takeiri, Y.

    2010-02-15

    Characteristics of radio frequency (RF) plasma production are investigated using a field effect transistor inverter power supply as an RF wave source. With the frequency of around 0.3 MHz, an electron density over 10{sup 18} m{sup -3} is produced in argon plasma. Although lower densities are obtained in hydrogen plasma, it drastically increased up to 5x10{sup 18} m{sup -3} with an axial magnetic field of around 100 G applied in the driver region. Effects of the magnetic field and gas pressure are investigated in the RF produced plasma with the frequency of several hundred kilohertz.

  17. MEASURING THE JET POWER OF FLAT-SPECTRUM RADIO QUASARS

    SciTech Connect (OSTI)

    Shabala, S. S.; Santoso, J. S.; Godfrey, L. E. H.

    2012-09-10

    We use frequency-dependent position shifts of flat-spectrum radio cores to estimate the kinetic power of active galactic nucleus (AGN) jets. We find a correlation between the derived jet powers and AGN narrow-line luminosity, consistent with the well-known relation for radio galaxies and steep spectrum quasars. This technique can be applied to intrinsically weak jets even at high redshift.

  18. Host Galaxies of X-Shaped Radio Sources

    SciTech Connect (OSTI)

    Springmann, Alessondra; /Wellesley Coll. /SLAC

    2006-09-27

    The majority of radiation from galaxies containing active galactic nuclei (AGNs) is emitted not by the stars composing the galaxy, but from an active source at the galactic center, most likely a supermassive black hole. Of particular interest are radio galaxies, the active galaxies emitting much of their radiation at radio wavelengths. Within each radio galaxy, an AGN powers a pair of collimated jets of relativistic particles, forming a pair of giant lobes at the end of the jets and thus giving a characteristic double-lobed appearance. A particular class of radio galaxies have an ''X''-shaped morphology: in these, two pairs of lobes appear to originate from the galactic center, producing a distinctive X-shape. Two main mechanisms have been proposed to explain the X-shape morphology: one being through the merger of a binary supermassive black hole system and the second being that the radio jets are expanding into an asymmetric medium. By analyzing radio host galaxy shapes, we probe the distribution of the stellar mass to compare the differing model expectations regarding the distribution of the surrounding gas and stellar material about the AGN.

  19. A solar type II radio burst from coronal mass ejection-coronal ray interaction: Simultaneous radio and extreme ultraviolet imaging

    SciTech Connect (OSTI)

    Chen, Yao; Du, Guohui; Feng, Shiwei; Kong, Xiangliang; Wang, Bing; Feng, Li; Guo, Fan; Li, Gang

    2014-05-20

    Simultaneous radio and extreme ultraviolet (EUV)/white-light imaging data are examined for a solar type II radio burst occurring on 2010 March 18 to deduce its source location. Using a bow-shock model, we reconstruct the three-dimensional EUV wave front (presumably the type-II-emitting shock) based on the imaging data of the two Solar TErrestrial RElations Observatory spacecraft. It is then combined with the Nanay radio imaging data to infer the three-dimensional position of the type II source. It is found that the type II source coincides with the interface between the coronal mass ejection (CME) EUV wave front and a nearby coronal ray structure, providing evidence that the type II emission is physically related to the CME-ray interaction. This result, consistent with those of previous studies, is based on simultaneous radio and EUV imaging data for the first time.

  20. Mechanical properties of niobium radio-frequency cavities

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

    Ciovati, Gianluigi; Dhakal, Pashupati; Matalevich, Joseph R.; Myneni, Ganapati Rao; Schmidt, A.; Iversen, J.; Matheisen, A.; Singer, W.

    2015-07-02

    Radio-frequency cavities made of bulk niobium are one of the components used in modern particle accelerators. The mechanical stability is an important aspect of cavity design, which typically relies on finite-element analysis simulations using material properties from tensile tests on sample. This contribution presents the results of strain and resonant frequency measurements as a function of a uniform pressure up to 722 kPa, applied to single-cell niobium cavities with different crystallographic structure, purity and treatments. In addition, burst tests of high-purity multi-cell cavities with different crystallographic structure have been conducted up to the tensile strength of the material. Finite-element analysismore » of the single-cell cavity geometry is in good agreement with the observed behavior in the elastic regime assuming a Young's modulus value of 88.5 GPa and a Poisson's ratio of 0.4, regardless of crystallographic structure, purity or treatment. However, the measured yield strength and tensile strength depend on crystallographic structure, material purity and treatment. In particular, the results from this study show that the mechanical properties of niobium cavities with large crystals are comparable to those of cavities made of fine-grain niobium.« less

  1. Mechanical properties of niobium radio-frequency cavities

    SciTech Connect (OSTI)

    Ciovati, Gianluigi; Dhakal, Pashupati; Matalevich, Joseph R.; Myneni, Ganapati Rao; Schmidt, A.; Iversen, J.; Matheisen, A.; Singer, W.

    2015-07-02

    Radio-frequency cavities made of bulk niobium are one of the components used in modern particle accelerators. The mechanical stability is an important aspect of cavity design, which typically relies on finite-element analysis simulations using material properties from tensile tests on sample. This contribution presents the results of strain and resonant frequency measurements as a function of a uniform pressure up to 722 kPa, applied to single-cell niobium cavities with different crystallographic structure, purity and treatments. In addition, burst tests of high-purity multi-cell cavities with different crystallographic structure have been conducted up to the tensile strength of the material. Finite-element analysis of the single-cell cavity geometry is in good agreement with the observed behavior in the elastic regime assuming a Young's modulus value of 88.5 GPa and a Poisson's ratio of 0.4, regardless of crystallographic structure, purity or treatment. However, the measured yield strength and tensile strength depend on crystallographic structure, material purity and treatment. In particular, the results from this study show that the mechanical properties of niobium cavities with large crystals are comparable to those of cavities made of fine-grain niobium.

  2. DISCOVERY OF CARBON RADIO RECOMBINATION LINES IN M82

    SciTech Connect (OSTI)

    Morabito, Leah K.; Oonk, J. B. R.; Salgado, Francisco; Röttgering, H. J. A.; Tielens, A. G. G. M.; Haverkorn, Marijke; Toribio, M. Carmen; Heald, George; Beck, Rainer; Adebahr, Björn; Best, Philip; Beswick, Robert; Bonafede, Annalisa; Brüggen, Marcus; Brunetti, Gianfranco; Chyży, Krzysztof T.; Conway, J. E.; Horellou, Cathy; Van Driel, Wim; Gregson, Jonathan; and others

    2014-11-10

    Carbon radio recombination lines (RRLs) at low frequencies (≲ 500 MHz) trace the cold, diffuse phase of the interstellar medium, which is otherwise difficult to observe. We present the detection of carbon RRLs in absorption in M82 with the Low Frequency Array in the frequency range of 48-64 MHz. This is the first extragalactic detection of RRLs from a species other than hydrogen, and below 1 GHz. Since the carbon RRLs are not detected individually, we cross-correlated the observed spectrum with a template spectrum of carbon RRLs to determine a radial velocity of 219 km s{sup –1}. Using this radial velocity, we stack 22 carbon-α transitions from quantum levels n = 468-508 to achieve an 8.5σ detection. The absorption line profile exhibits a narrow feature with peak optical depth of 3 × 10{sup –3} and FWHM of 31 km s{sup –1}. Closer inspection suggests that the narrow feature is superimposed on a broad, shallow component. The total line profile appears to be correlated with the 21 cm H I line profile reconstructed from H I absorption in the direction of supernova remnants in the nucleus. The narrow width and centroid velocity of the feature suggests that it is associated with the nuclear starburst region. It is therefore likely that the carbon RRLs are associated with cold atomic gas in the direction of the nucleus of M82.

  3. The peculiar radio source M17 JVLA 35

    SciTech Connect (OSTI)

    Rodríguez, L. F.; Carrasco-González, C.; Montes, G.; Tapia, M.

    2014-07-01

    M17 JVLA 35 is a radio source detected in projection against the M17 H II region. In recent observations, its spectrum between 4.96 and 8.46 GHz was found to be positive and very steep, with α ≥ 2.9 ± 0.6 (S {sub ν}∝ν{sup α}). Here we present Very Large Array observations made in the 18.5 to 36.5 GHz region that indicate a spectral turnover at ∼13 GHz and a negative spectral index (α ≅ –2.0) at higher frequencies. The spectrum is consistent with that of an extragalactic high frequency peaker (HFP). However, M17 JVLA 35 has an angular size of ∼0.''5 at 8.46 GHz, while HFPs have extremely compact, milliarcsecond dimensions. We discuss other possible models for the spectrum of the source and do not find them feasible. Finally, we propose that M17 JVLA 35 is indeed an HFP but that its angular size becomes broadened by plasma scattering as its radiation travels across M17. If our interpretation is correct, accurate measurements of the angular size of M17 JVLA 35 across the centimeter range should reveal the expected ν{sup –2} dependence.

  4. Operating a radio-frequency plasma source on water vapor

    SciTech Connect (OSTI)

    Nguyen, Sonca V. T.; Gallimore, Alec D.; Foster, John E.

    2009-08-15

    A magnetically enhanced radio-frequency (rf) plasma source operating on water vapor has an extensive list of potential applications. In this work, the use of a rf plasma source to dissociate water vapor for hydrogen production is investigated. This paper describes a rf plasma source operated on water vapor and characterizes its plasma properties using a Langmuir probe, a residual gas analyzer, and a spectrometer. The plasma source operated first on argon and then on water vapor at operating pressures just over 300 mtorr. Argon and water vapor plasma number densities differ significantly. In the electropositive argon plasma, quasineutrality requires n{sub i}{approx_equal}n{sub e}, where n{sub i} is the positive ion density. But in the electronegative water plasma, quasineutrality requires n{sub i+}=n{sub i-}+n{sub e}. The positive ion density and electron density of the water vapor plasma are approximately one and two orders of magnitude lower, respectively, than those of argon plasma. These results suggest that attachment and dissociative attachment are present in electronegative water vapor plasma. The electron temperature for this water vapor plasma source is between 1.5 and 4 eV. Without an applied axial magnetic field, hydrogen production increases linearly with rf power. With an axial magnetic field, hydrogen production jumps to a maximum value at 500 W and then saturates with rf power. The presence of the applied axial magnetic field is therefore shown to enhance hydrogen production.

  5. A multi-wavelength investigation of the radio-loud supernova PTF11qcj and its circumstellar environment

    SciTech Connect (OSTI)

    Corsi, A.; Ofek, E. O.; Gal-Yam, A.; Xu, D.; Frail, D. A.; Kulkarni, S. R.; Horesh, A.; Carpenter, J.; Arcavi, I.; Cao, Y.; Mooley, K.; Sesar, B.; Fox, D. B.; Kasliwal, M. M.; Sullivan, M.; Maguire, K.; Pan, Y.-C.; Cenko, S. B.; Sternberg, A.; Bersier, D.; and others

    2014-02-10

    We present the discovery, classification, and extensive panchromatic (from radio to X-ray) follow-up observations of PTF11qcj, a supernova (SN) discovered by the Palomar Transient Factory (PTF). Our observations with the Karl G. Jansky Very Large Array show that this event is radio-loud: PTF11qcj reached a radio peak luminosity comparable to that of the famous gamma-ray-burst-associated SN 1998bw (L {sub 5} {sub GHz} ? 10{sup 29} erg s{sup 1} Hz{sup 1}). PTF11qcj is also detected in X-rays with the Chandra Observatory, and in the infrared band with Spitzer. Our multi-wavelength analysis probes the SN interaction with circumstellar material. The radio observations suggest a progenitor mass-loss rate of ?10{sup 4} M {sub ?} yr{sup 1} (v{sub w} /1000 km s{sup 1}), and a velocity of ?0.3-0.5 c for the fastest moving ejecta (at ?10 days after explosion). However, these estimates are derived assuming the simplest model of SN ejecta interacting with a smooth circumstellar wind, and do not account for possible inhomogeneities in the medium and asphericity of the explosion. The radio data show deviations from such a simple model, as well as a late-time re-brightening. The X-ray flux from PTF11qcj is compatible with the high-frequency extrapolation of the radio synchrotron emission (within the large uncertainties). A light echo from pre-existing dust is in agreement with our infrared data. Our pre-explosion data from the PTF suggest that a precursor eruption of absolute magnitude M{sub r} ? 13 mag may have occurred ?2.5 yr prior to the SN explosion. Overall, PTF11qcj fits the expectations from the explosion of a Wolf-Rayet star. Precursor eruptions may be a feature characterizing the final pre-explosion evolution of such stars.

  6. Commissioning of helium injector for coupled radio frequency quadrupole and separated function radio frequency quadrupole accelerator

    SciTech Connect (OSTI)

    Peng, Shixiang Chen, Jia; Ren, Haitao; Zhao, Jie; Xu, Yuan; Zhang, Tao; Xia, Wenlong; Gao, Shuli; Wang, Zhi; Luo, Yuting; Guo, Zhiyu; Zhang, Ailing; Chen, Jia'er; University of Chinese Academy of Sciences, Beijing 100049

    2014-02-15

    A project to study a new type of acceleration structure has been launched at Peking University, in which a traditional radio frequency quadrupole (RFQ) and a separated function radio frequency quadrupole are coupled in one cavity to accelerate the He+ beam. A helium injector for this project is developed. The injector consists of a 2.45 GHz permanent magnet electron cyclotron resonance ion source and a 1.16 m long low energy beam transport (LEBT). The commissioning of this injector was carried out and an onsite test was held in June 2013. A 14 mA He+ beam with the energy of 30 keV has been delivered to the end of the LEBT, where a diaphragm with the diameter of 7 mm is located. The position of the diaphragm corresponds to the entrance of the RFQ electrodes. The beam emittance and fraction were measured after the 7 mm diaphragm. Its rms emittance is about 0.14 ??mm?mrad and the fraction of He+ is about 99%.

  7. THE CATALOG OF POSITIONS OF OPTICALLY BRIGHT EXTRAGALACTIC RADIO SOURCES OBRS-2

    SciTech Connect (OSTI)

    Petrov, L.

    2013-07-01

    Future space-borne astrometry missions, such as Gaia, will be able to determine the optical positions of hundreds of quasars with submilliarcsecond accuracies comparable to those achieved in radio by very long baseline interferometry (VLBI). Comparisons of coordinate systems from space-borne missions and VLBI will be very important, first for investigations of possible systematic errors and second for investigations of possible shifts between centroids of radio and optical emissions in active galactic nuclei. In order to make such a comparison more robust, a program for densification of the grid of radio sources detectable with both VLBI and Gaia was launched in 2006. Program sources are 398 quasars with declinations > - 10 Degree-Sign that are brighter than 18 mag at the V band. The first two observing campaigns were run in 2007-2008. In the third campaign, a set of 291 objects from that list was observed with the VLBA+EVN in 2010-2011 with the primary goal of producing their images with milliarcsecond resolution. In this paper, following the method of absolute astrometry, coordinates of observed sources have been derived with milliarcsecond accuracies from analysis of these observations. The catalog of positions of 295 target sources, estimates of their correlated flux densities at 2.2 and 8.4 GHz, and their images are presented. The accuracies of source coordinates are in a range of 2-200 mas, with a median of 3.2 mas.

  8. ARCADE 2 OBSERVATIONS OF GALACTIC RADIO EMISSION

    SciTech Connect (OSTI)

    Kogut, A.; Fixsen, D. J.; Mirel, P.; Wollack, E.; Levin, S. M.; Limon, M.; Seiffert, M.; Lubin, P. M.; Singal, J.; Villela, T.; Wuensche, C. A.

    2011-06-10

    We use absolutely calibrated data from the ARCADE 2 flight in 2006 July to model Galactic emission at frequencies 3, 8, and 10 GHz. The spatial structure in the data is consistent with a superposition of free-free and synchrotron emission. Emission with spatial morphology traced by the Haslam 408 MHz survey has spectral index {beta}{sub synch} = -2.5 {+-} 0.1, with free-free emission contributing 0.10 {+-} 0.01 of the total Galactic plane emission in the lowest ARCADE 2 band at 3.15 GHz. We estimate the total Galactic emission toward the polar caps using either a simple plane-parallel model with csc |b| dependence or a model of high-latitude radio emission traced by the COBE/FIRAS map of C II emission. Both methods are consistent with a single power law over the frequency range 22 MHz to 10 GHz, with total Galactic emission toward the north polar cap T{sub Gal} = 10.12 {+-} 0.90 K and spectral index {beta} = -2.55 {+-} 0.03 at reference frequency 0.31 GHz. Emission associated with the plane-parallel structure accounts for only 30% of the observed high-latitude sky temperature, with the residual in either a Galactic halo or an isotropic extragalactic background. The well-calibrated ARCADE 2 maps provide a new test for spinning dust emission, based on the integrated intensity of emission from the Galactic plane instead of cross-correlations with the thermal dust spatial morphology. The Galactic plane intensity measured by ARCADE 2 is fainter than predicted by models without spinning dust and is consistent with spinning dust contributing 0.4 {+-} 0.1 of the Galactic plane emission at 23 GHz.

  9. Cluster candidates around low-power radio galaxies at z ? 1-2 in cosmos

    SciTech Connect (OSTI)

    Castignani, G.; Celotti, A.; De Zotti, G.; Chiaberge, M.; Norman, C.

    2014-09-10

    We search for high-redshift (z ?1-2) galaxy clusters using low power radio galaxies (FR I) as beacons and our newly developed Poisson probability method based on photometric redshift information and galaxy number counts. We use a sample of 32 FR Is within the Cosmic Evolution Survey (COSMOS) field from the Chiaberge et al. catalog. We derive a reliable subsample of 21 bona fide low luminosity radio galaxies (LLRGs) and a subsample of 11 high luminosity radio galaxies (HLRGs), on the basis of photometric redshift information and NRAO VLA Sky Survey radio fluxes. The LLRGs are selected to have 1.4 GHz rest frame luminosities lower than the fiducial FR I/FR II divide. This also allows us to estimate the comoving space density of sources with L {sub 1.4} ? 10{sup 32.3} erg s{sup 1} Hz{sup 1} at z ? 1.1, which strengthens the case for a strong cosmological evolution of these sources. In the fields of the LLRGs and HLRGs we find evidence that 14 and 8 of them reside in rich groups or galaxy clusters, respectively. Thus, overdensities are found around ?70% of the FR Is, independently of the considered subsample. This rate is in agreement with the fraction found for low redshift FR Is and it is significantly higher than that for FR IIs at all redshifts. Although our method is primarily introduced for the COSMOS survey, it may be applied to both present and future wide field surveys such as Sloan Digital Sky Survey Stripe 82, LSST, and Euclid. Furthermore, cluster candidates found with our method are excellent targets for next generation space telescopes such as James Webb Space Telescope.

  10. RECOILING SUPERMASSIVE BLACK HOLES IN SPIN-FLIP RADIO GALAXIES

    SciTech Connect (OSTI)

    Liu, F. K.; Wang Dong; Chen Xian

    2012-02-20

    Numerical relativity simulations predict that coalescence of supermassive black hole (SMBH) binaries leads not only to a spin flip but also to a recoiling of the merger remnant SMBHs. In the literature, X-shaped radio sources are popularly suggested to be candidates for SMBH mergers with spin flip of jet-ejecting SMBHs. Here we investigate the spectral and spatial observational signatures of the recoiling SMBHs in radio sources undergoing black hole spin flip. Our results show that SMBHs in most spin-flip radio sources have mass ratio q {approx}> 0.3 with a minimum possible value q{sub min} {approx_equal} 0.05. For major mergers, the remnant SMBHs can get a kick velocity as high as 2100 km s{sup -1} in the direction within an angle {approx}< 40 Degree-Sign relative to the spin axes of remnant SMBHs, implying that recoiling quasars are biased to be with high Doppler-shifted broad emission lines while recoiling radio galaxies are biased to large apparent spatial off-center displacements. We also calculate the distribution functions of line-of-sight velocity and apparent spatial off-center displacements for spin-flip radio sources with different apparent jet reorientation angles. Our results show that the larger the apparent jet reorientation angle is, the larger the Doppler-shifting recoiling velocity and apparent spatial off-center displacement will be. We investigate the effects of recoiling velocity on the dust torus in spin-flip radio sources and suggest that recoiling of SMBHs would lead to 'dust-poor' active galactic nuclei. Finally, we collect a sample of 19 X-shaped radio objects and for each object give the probability of detecting the predicted signatures of recoiling SMBH.

  11. The radio continuum-star formation rate relation in WSRT sings galaxies

    SciTech Connect (OSTI)

    Heesen, Volker; Brinks, Elias; Leroy, Adam K.; Heald, George; Braun, Robert; Bigiel, Frank; Beck, Rainer E-mail: v.heesen@soton.ac.uk E-mail: heald@astron.nl E-mail: bigiel@uni-heidelberg.de

    2014-05-01

    We present a study of the spatially resolved radio continuum-star formation rate (RC-SFR) relation using state-of-the-art star formation tracers in a sample of 17 THINGS galaxies. We use SFR surface density (Σ{sub SFR}) maps created by a linear combination of GALEX far-UV (FUV) and Spitzer 24 μm maps. We use RC maps at λλ22 and 18 cm from the WSRT SINGS survey and Hα emission maps to correct for thermal RC emission. We compare azimuthally averaged radial profiles of the RC and FUV/mid-IR (MIR) based Σ{sub SFR} maps and study pixel-by-pixel correlations at fixed linear scales of 1.2 and 0.7 kpc. The ratio of the integrated SFRs from the RC emission to that of the FUV/MIR-based SF tracers is R{sub int}=0.78±0.38, consistent with the relation by Condon. We find a tight correlation between the radial profiles of the radio and FUV/MIR-based Σ{sub SFR} for the entire extent of the disk. The ratio R of the azimuthally averaged radio to FUV/MIR-based Σ{sub SFR} agrees with the integrated ratio and has only quasi-random fluctuations with galactocentric radius that are relatively small (25%). Pixel-by-pixel plots show a tight correlation in log-log diagrams of radio to FUV/MIR-based Σ{sub SFR}, with a typical standard deviation of a factor of two. Averaged over our sample we find (Σ{sub SFR}){sub RC}∝(Σ{sub SFR}){sub hyb}{sup 0.63±0.25}, implying that data points with high Σ{sub SFR} are relatively radio dim, whereas the reverse is true for low Σ{sub SFR}. We interpret this as a result of spectral aging of cosmic-ray electrons (CREs), which are diffusing away from the star formation sites where they are injected into the interstellar medium. This is supported by our finding that the radio spectral index is a second parameter in pixel-by-pixel plots: those data points dominated by young CREs are relatively radio dim, while those dominated by old CREs are slightly more RC bright than what would be expected from a linear extrapolation. We studied the ratio R of

  12. A RADIO-LOUD MAGNETAR IN X-RAY QUIESCENCE

    SciTech Connect (OSTI)

    Levin, Lina; Bailes, Matthew; Bhat, N. D. Ramesh; Burke-Spolaor, Sarah; Van Straten, Willem; Bates, Samuel; Kramer, Michael; Stappers, Ben; Burgay, Marta; D'Amico, Nichi; Milia, Sabrina; Possenti, Andrea; Rea, Nanda

    2010-09-20

    As part of a survey for radio pulsars with the Parkes 64 m telescope, we have discovered PSR J1622-4950, a pulsar with a 4.3 s rotation period. Follow-up observations show that the pulsar has the highest inferred surface magnetic field of the known radio pulsars (B {approx}3 x 10{sup 14} G), and it exhibits significant timing noise and appears to have an inverted spectrum. Unlike the vast majority of the known pulsar population, PSR J1622-4950 appears to switch off for many hundreds of days and even in its on-state exhibits extreme variability in its flux density. Furthermore, the integrated pulse profile changes shape with epoch. All of these properties are remarkably similar to the only two magnetars previously known to emit radio pulsations. The position of PSR J1622-4950 is coincident with an X-ray source that, unlike the other radio pulsating magnetars, was found to be in quiescence. We conclude that our newly discovered pulsar is a magnetar-the first to be discovered via its radio emission.

  13. Implementation Standing Technical Committee Presentation

    Broader source: Energy.gov [DOE]

    This presentation outlines the goals of the Implementation Standing Technical Committee, as presented at the Building America Spring 2012 Stakeholder meeting on February 29, 2012, in Austin, Texas.

  14. Enclosures STC Stakeholder Meeting Presentation

    Broader source: Energy.gov [DOE]

    This presentation outlines the goals of the Enclosures Standing Technical Committee, as presented at the Building America Spring 2012 Stakeholder meeting on February 29, 2012, in Austin, Texas.

  15. 2015 Construction Safety Workshop Presentations

    Office of Energy Efficiency and Renewable Energy (EERE)

    2015 Construction Safety Workshop Presentations, June 16, 2015 - Forrestal Building - Washington, DC

  16. Reliability of Electrical Interconnects (Presentation)

    SciTech Connect (OSTI)

    Devoto, D.

    2014-06-01

    This presentation discusses the status of NREL's research on the reliability of electrical interconnects.

  17. THE FAINTEST RADIO SOURCE YET: EXPANDED VERY LARGE ARRAY OBSERVATIONS OF THE GRAVITATIONAL LENS SDSS J1004+4112

    SciTech Connect (OSTI)

    Jackson, N.

    2011-09-20

    We present new radio observations of the large-separation gravitationally lensed quasar SDSS J1004+4112, taken in a total of 6 hr of observations with the Expanded Very Large Array. The maps reach a thermal noise level of approximately 4 {mu}Jy. We detect four of the five lensed images at the 15-35 {mu}Jy level, representing a source of intrinsic flux density, after allowing for lensing magnification, of about 1 {mu}Jy, intrinsically probably the faintest radio source yet detected. This reinforces the utility of gravitational lensing in potentially allowing us to study nJy-level sources before the advent of the Square Kilometre Array. In an optical observation taken three months after the radio observation, image C is the brightest image, whereas the radio map shows flux density ratios consistent with previous optical observations. Future observations separated by a time delay will give the intrinsic flux ratios of the images in this source.

  18. Tonto Apache Tribe Presents: Renewable Energy Grant Presentation

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

    Presents The Department of Energy (2014) Project - Renewable Energy Grant Presentation & Follow up: Team Includes: The Tonto Apache Tribe, SunRenu Solar, & The Department of Energy Presenters: Joe Bresette - Grant Developer, TAT Barry Coe - Principal, SRS 2014 Department of Energy Renewable Energy Grant Program Presentation Outline * Tribal Overview * Summary of Project Objectives * Locations * Timelines and goals * Future Projects * Next Steps 2014 Department of Energy Renewable Energy

  19. Congressional Testimony | Department of Energy

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

    March 17, 2011 Before the House Energy and Commerce Subcommittee on Oversight and Investigations Subject: Oversight of DOE Recovery Act Funding By: Steve Isakowitz, Chief Financial...

  20. Congressional Testimony | Department of Energy

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

    the Subcommittee on Oversight and Investigations - House Committee on Energy and Commerce Subject: Security Incident at the Y-12 National Security Complex By: Daniel B....

  1. Congressional Testimony | Department of Energy

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

    Office of Policy and International Affairs June 13, 2011 Before the House Energy and Commerce Subject: H.R. 2054, Energy and Revenue Enrichment Act By: Deputy Secretary Daniel...

  2. Final_Testimony(6).pdf

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

    ... Recovery Act appropriations across all government agencies. http:www.whitehouse.govsitesdefaultfilesadministration- officialvicepresidentmemooncleanenergyeconomy...

  3. Testimony of Dr. Patricia Dehmer

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

    Dr. Patricia Dehmer Deputy Director of the Office of Science for Science Programs U.S. Department of Energy Before the Committee on Science, Space, and Technology Subcommittee on Research and Technology United States House of Representatives SBIR/STTR Reauthorization: A Review of Technology Transfer June 16, 2016 Thank you Chairwoman Comstock, Ranking Member Lipinski, and Members of the Subcommittee. I am pleased to come before you today to discuss the Department of Energy's (DOE's) programs for

  4. Congressional Testimony | Department of Energy

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

    the District of Columbia Subject: Inspiring Students to Federal Service By: Michael C. Kane, Chief Human Capital Officer, U.S. Department of Energy June 15, 2011 Before the House...

  5. Final_Testimony(20).pdf

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

    of four Americans say they have replaced inefficient bulbs with compact fluorescent lights (CFLs) or light-emitting diodes (LEDs) over the last few years, and 84 percent of...

  6. Final_Testimony(21).pdf

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

    which we recognize is of great concern to both the Committee and the American people in light of recent developments, EIA expects continued tightening of world oil markets over the...

  7. Final_Testimony_MKane.pdf

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

    in order to be competitive and to attract and to retain top talent. We also use social media for recruiting purposes. We tweet about job openings, including senior executive...

  8. Final_Testimony_JSilver.pdf

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

    been stagnant. In addition, these projects contribute to the build-out of the domestic supply chain and manufacturing base that we will need to "win" the clean energy future. To...

  9. Final_Poneman_Testimony.pdf

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

    that nuclear power's contribution as a reliable source of safe and secure clean, carbon-free nuclear energy in the United States will be further enhanced by implementing the...

  10. Congressional Testimony | Department of Energy

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

    Request By: Ines Triay, Assistant Secretary Office of Environmenal Management April 20, 2010 Before the Senate Energy and Natural Resources Subject: Carbon Capture and...

  11. Final_Testimony(2).pdf

    Office of Environmental Management (EM)

    ... 1 like Nissan, Tesla, Fisker and Ford to make advanced vehicles in the United States. ... of nearly 1 Manufacturers Ford, Nissan, Tesla and Fisker are funded by the Advanced ...

  12. Microsoft Word - ML Final Testimony

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

    look at investments. In 2011, my office led three strategic TechStat reviews on Identity, Credential, and Access Management (ICAM); Public Key Infrastructure; and Commodity...

  13. Pete_Lyons_Nomination_Testimony

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

    remain strong and vigilant components of the Nation's integrated defenses against terrorism. I was a consistent voice for improving partnerships with international regulatory...

  14. Congressional Testimony | Department of Energy

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

    Renewable Energy Act of 2013 By: Mike Carr, Senior Advisor to the Director, Energy Policy and Systmes Analysis; and Principal Deputy Assistant Secretary Office of Energy...

  15. Congressional Testimony | Department of Energy

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

    March 24, 2009 Before the House Science and Technology, Subcommittee on Energy and Environment Subject: Examining Federal Vehicle Technology Research and Development Programs Steve...

  16. Final_Testimony(26).pdf

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

    enable organizations to proactively manage risk. Ensuring the cyber security of a modern, digital electricity infrastructure is a key objective of national smart grid efforts. As a...

  17. Congressional Testimony | Department of Energy

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

    Clean Energy and Security Act of 2009 By: Secretary Steven Chu April 22, 2009 Before the House Small Business Committee Subject: SBIR Reauthorization By: Larry James, Technology...

  18. Congressional Testimony | Department of Energy

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

    the Senate Committee on Energy and Natural Resources Subject: Nomination Hearing By: James J. Markowsky, Nominee for Assistant Secretary for Fossil Energy July 23, 2009 Before...

  19. Testimony & Speeches | Department of Energy

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

    ... National Summit, Detroit, Michigan, June 17, 2009 Remarks by the Assistant Secretary for Policy & International Affairs to the Beijing Energy Club, Beijing, Tuesday, June 9, 2009

  20. Congressional Testimony | Department of Energy

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

    Fiscal Year 2014 Budget for Southwestern Power Administration By: Christopher M. Turner, Administrator, SWPA April 16, 2013 Before the Subcommittee on Water and Power - House...

  1. Congressional Testimony | Department of Energy

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

    Committee on Natural Resources Subject: Proposed FY 2015 Budget for Southwestern Power Administration By: Christopher M. Turner, Administrator, Southwestern Power Administration...

  2. Final_Testimony(22).pdf

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

    2010, is projected to decline to 43 percent in 2035. Generally, reductions in projected oil consumption are largely reflected as reductions in oil imports. One of the most...

  3. Final_Testimony_(Chalk).pdf

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

    The transportation sector accounts for approximately two-thirds of the United States' oil consumption and contributes to one-third of the Nation's greenhouse gas emissions 1 ....

  4. Final_Testimony_(Isakowitz).pdf

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

    As the President said in his State of the Union address, this is our generation's "Sputnik moment." As Secretary Chu has stated, we must rev up the great American innovation...

  5. Press Room - Radio - U.S. Energy Information Administration (EIA)

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

    Radio Spots Ready-to-broadcast news stories. Transcripts provided so radio spots can be re-recorded in whole or in part. Decline in U.S. oil production won't be as steep mp3 Date: September 7, 2016 Description: Although total U.S. crude oil production is expected to continue declining, the drop in output this year and in 2017 won't be as steep, because of improved efficiency at drilling rigs and more drilling overall. In its new monthly forecast, the U.S. Energy Information Administration

  6. ARM - Field Campaign - CROC - Convective Radio Occultations Campaign

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

    govCampaignsCROC - Convective Radio Occultations Campaign ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Campaign : CROC - Convective Radio Occultations Campaign 2012.02.01 - 2014.12.31 Lead Scientist : Riccardo Biondi For data sets, see below. Abstract This campaign acquired in situ measurements (cloud base, cloud top, profiles of backscatter, temperature and water vapor) co-located with the Global Positioning

  7. Plasma stability control using dielectric barriers in radio-frequency atmospheric pressure glow discharges

    SciTech Connect (OSTI)

    Shi, J. J.; Liu, D. W.; Kong, M. G.

    2006-08-21

    It is widely accepted that electrode insulation is unnecessary for generating radio-frequency (rf) atmospheric pressure glow discharges (APGDs). It is also known that rf APGDs with large discharge current are susceptible to the glow-to-arc transition. In this letter, a computational study is presented to demonstrate that dielectric barriers provide an effective control over unlimited current growth and allow rf APGDs to be operated at very high current densities with little danger of the glow-to-arc transition. Characteristics of electrode sheaths are used to show that the stability control is achieved by forcing the plasma-containing electrode unit to acquire positive differential conductivity.

  8. Radio Frequency Surface Impedance Characterization System for Superconducting Samples at 7.5 GHz

    SciTech Connect (OSTI)

    Binping Xiao, Charles Reece, Michael Kelley, Larry Phillips, Rongli Geng, Haipeng Wang, Frank Marhauser

    2011-05-01

    A radio frequency (RF) surface impedance characterization (SIC) system that uses a sapphire-loaded Nb cavity operating at 7.5 GHz has been fabricated to measure the RF surface impedance of flat superconducting samples. Currently, the SIC system can make direct calorimetric surface impedance measurements in the central 0.8 cm2 area of 5 cm diameter disk samples in a temperature range from 2 to 20 K, exposed to a magnetic flux density of up to 14 mT. As an application, we present the measurement results for a bulk Nb sample.

  9. Breakdown in hydrogen and deuterium gases in static and radio-frequency fields

    SciTech Connect (OSTI)

    Korolov, I. Donkó, Z.

    2015-09-15

    We report the results of a combined experimental and modeling study of the electrical breakdown of hydrogen and deuterium in static (DC) and radio-frequency (RF) (13.56 MHz) electric fields. For the simulations of the breakdown events, simplified models are used and only electrons are traced by Monte Carlo simulation. The experimental DC Paschen curve of hydrogen is used for the determination of the effective secondary electron emission coefficient. A very good agreement between the experimental and the calculated RF breakdown characteristics for hydrogen is found. For deuterium, on the other hand, presently available cross section sets do not allow a reproduction of RF breakdown characteristics.

  10. Simulations on Head-Tail Radio Galaxies Using Magnetic Tower Model

    SciTech Connect (OSTI)

    Gan, Zhaoming; Li, Hui; Li, Shengtai; Yuan, Feng

    2015-08-19

    The presentation is a series of slides showing diagrams, equations, and various photographs. In summary, a detailed comparison was carried out between hydrodynamic jet and MHD jet models (the magnetic tower jet, more precisely), in an effort to understand the underlying physics of observed radio galaxies, and also its possible indications for jet feedback. It was found that the results of magnetic tower model usually lie in a reasonable regime, and in several aspects, the magnetic tower jet seems more preferred than pure hydrodynamic jet models.

  11. Scattering of radio frequency waves by blobs in tokamak plasmas

    SciTech Connect (OSTI)

    Ram, Abhay K.; Hizanidis, Kyriakos; Kominis, Yannis

    2013-05-15

    The density fluctuations and blobs present in the edge region of magnetic fusion devices can scatter radio frequency (RF) waves through refraction, reflection, diffraction, and coupling to other plasma waves. This, in turn, affects the spectrum of the RF waves and the electromagnetic power that reaches the core of the plasma. The usual geometric optics analysis of RF scattering by density blobs accounts for only refractive effects. It is valid when the amplitude of the fluctuations is small, of the order of 10%, compared to the background density. In experiments, density fluctuations with much larger amplitudes are routinely observed, so that a more general treatment of the scattering process is needed. In this paper, a full-wave model for the scattering of RF waves by a blob is developed. The full-wave approach extends the range of validity well beyond that of geometric optics; however, it is theoretically and computationally much more challenging. The theoretical procedure, although similar to that followed for the Mie solution of Maxwell's equations, is generalized to plasmas in a magnetic field. Besides diffraction and reflection, the model includes coupling to a different plasma wave than the one imposed by the external antenna structure. In the model, it is assumed that the RF waves interact with a spherical blob. The plasma inside and around the blob is cold, homogeneous, and imbedded in a uniform magnetic field. After formulating the complete analytical theory, the effect of the blob on short wavelength electron cyclotron waves and longer wavelength lower hybrid waves is studied numerically.

  12. Energy Saving Glass Lamination via Selective Radio-Frequency Heating

    SciTech Connect (OSTI)

    Shulman, Holly S.; Allan, Shawn M.

    2009-11-11

    This Inventions and Innovations program supported the technical and commercial research and development needed to elevate Ceralink's energy saving process for flat glass lamination from bench scale to a self-supporting technology with significant potential for growth. Radio-frequency heating was any un-explored option for laminating glass prior to this program. With significant commercial success through time and energy savings in the wood, paper, and plastics industries, RF heating was found to have significant promise for the energy intensive glass lamination industry. A major technical goal of the program was to demonstrate RF lamination across a wide range of laminate sizes and materials. This was successfully accomplished, dispelling many skeptics' concerns about the abilities of the technology. Ceralink laminated panels up to 2 ft x 3 ft, with four sets processed simultaneously, in a 3 minute cycle. All major categories of interlayer materials were found to work with RF lamination. In addition to laminating glass, other materials including photovoltaic silicon solar cells, light emitting diodes, metallized glass, plastics (acrylic and polycarbonate), and ceramics (alumina) were found compatible with the RF process. This opens up a wide range of commercial opportunities beyond the initially targeted automotive industry. The dramatic energy savings reported for RF lamination at the bench scale were found to be maintained through the scale up of the process. Even at 2 ft x 3 ft panel sizes, energy savings are estimated to be at least 90% compared to autoclaving or vacuum lamination. With targeted promotion through conference presentations, press releases and internet presence, RF lamination has gained significant attention, drawing large audiences at American Ceramic Society meetings. The commercialization success of the project includes the establishment of a revenue-generating business model for providing process development and demonstrations for potential RF

  13. Design, development, and acceleration trials of radio-frequency quadrupole

    SciTech Connect (OSTI)

    Rao, S. V. L. S. Jain, Piyush; Pande, Rajni; Roy, Shweta; Mathew, Jose V.; Kumar, Rajesh; Pande, Manjiri; Krishnagopal, S.; Gupta, S. K.; Singh, P.

    2014-04-15

    A deuteron radio frequency quadrupole (RFQ) accelerator has been designed, fabricated, and tested at BARC, which will be used for neutron generation. The RFQ operates at a frequency of 350 MHz and needs an inter-vane voltage of 44 kV to accelerate the deuteron beam to 400 keV within a length of 1.03 m. The error analysis shows that the offset of two opposite vanes in the same direction by 100 μm leads to a change in resonant frequency by 1.3 MHz and a significant change of fields in the quadrants (∼±40% with respect to average field). From the 3D analysis, we have observed that the unwanted dipole mode frequencies are very near to the quadrupole mode frequency which will make structure sensitive to the perturbations. In order to move the dipole modes away from the quadrupole modes, we have used the dipole stabilizer rods. The 5 wire transmission line theory was used to study the perturbative analysis of the RFQ and based on this a computer program has been written to tune the cavity to get required field distribution. Based on these studies, a 1.03 m long RFQ made of OFE copper has been fabricated and tested. Even though the RFQ was designed for deuteron (D{sup +}) beam, we tested it by accelerating both the proton (H{sup +}) and D{sup +} beams. The RFQ was operated in pulsed mode and accelerated both H{sup +} and D{sup +} beams to designed values of 200 and 400 keV, respectively. The measured parameters are in good agreement with the designed values validating our simulations and fabrication processes. In this paper, simulations, RF measurements, and beam commissioning results are presented.

  14. REEE Solicitation Public Meeting Presentation

    Broader source: Energy.gov [DOE]

    A copy of a REEE Solicitation Public Meeting Presentation. The presentation provides an overview of the Loan Programs Office mission, support, projects, and reviews the Draft Renewable Energy and Energy Efficient Projects Solicitation.

  15. Renewable Resources for Hydrogen (Presentation)

    SciTech Connect (OSTI)

    Jalalzadeh-Azar, A. A.

    2010-05-03

    This presentation provides an overview of renewable resources for hydrogen. It was presented at the National Hydrogen Association Hydrogen Conference & Expo in Long Beach, CA, May 3-6, 2010.

  16. NNMCAB Presentations | Department of Energy

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

    Presentations NNMCAB Presentations July 27, 2016 2016 Lifecycle Estimate for Los Alamos National Laboratory's Environmental Legacy Cleanup Responsibilities At the July 27, 2016 meeting: Doug Hintze, DOE EM-LA, Presented on the Environmental Management Lifecycle Baseline July 27, 2016 Los Alamos Legacy Cleanup Contract Draft Request for Proposal At the July 27, 2016 meeting, David Rhodes, DOE EM-LA, Presented on the LLCC Draft Request for Proposal. June 15, 2016 NNSA Supplemental Environmental

  17. LANL Atomics Women Organization presentation

    SciTech Connect (OSTI)

    Nicholas, Nancy Jo

    2015-03-05

    The Powerpoint presentation highlights various activities at LANL that focus on countering and reducing world-wide nuclear threats.

  18. ARM - Presentations, Reports, and Lectures

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

    ApplicationsPresentations, Reports, and Lectures Summer Training Information Training Home Agenda Instructor Bios Project Reports, Presentations, and Lectures Images Presentations, Reports, and Lectures Boundary Layer Structure Instructors: Ewan O'Connor, Virendra Ghate team_1_edits Students: Jae-In Song, Suzane de Sá, Shaoyue Qiu, Thiago Biscaro Project Presentation: Boundary Layer Structure: A Comparison Between Methods and Sites Report: Planetary Boundary Layer Height: A Comparison of

  19. NIST Presents Green Button: Technical

    ScienceCinema (OSTI)

    Wollman, David

    2013-05-29

    Part 3/3 of NIST's presentation about the Green Button program. Slides available at http://energy.gov/developer.

  20. NIST Presents Green Button: Technical

    SciTech Connect (OSTI)

    Wollman, David

    2012-01-01

    Part 3/3 of NIST's presentation about the Green Button program. Slides available at http://energy.gov/developer.