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Sample records for wilson hall thursday

  1. Fermilab Wilson Hall and Vicinity

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

    Wilson Hall and Vicinity Wilson Hall Ramsey Auditorium Booster Linac Antiproton Source Leon M. Lederman Science Education Center...

  2. Directions to Wilson Hall, Fermilab

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

    in Wilson Hall, the central laboratory building of Fermi National Accelerator Laboratory, as shown on the map below. Ramsey Auditorium is located at the south end of Wilson ...

  3. Newport News School Board Member Hosting Town Hall Thursday (Daily Press) |

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

    Jefferson Lab Newport News School Board Member Hosting Town Hall Thursday (Daily Press) External Link: http://articles.dailypress.com/2012-03-05/news/dp-nws-ednotebook-0305-20120304_1... By jlab_admin on Tue, 2012-03-06

  4. Electricity Advisory Committee Meeting Presentations March 2015 - Thursday,

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

    March 26, 2015 | Department of Energy Thursday, March 26, 2015 Electricity Advisory Committee Meeting Presentations March 2015 - Thursday, March 26, 2015 The Department of Energy's Electricity Advisory Committee held a meeting on Thursday, March 26 and Friday, March 27, 2015, at the National Rural Electric Cooperative Association, 4301 Wilson Blvd., Arlington, VA. Thursday, March 26, 2015 Briefing - National Laboratory Consortium Representatives - Bill Parks, Senior Technical Advisor, DOE/OE

  5. Electricity Advisory Committee Presentations June 2016- Thursday, June 2, 2016

    Broader source: Energy.gov [DOE]

    The Department of Energy's Electricity Advisory Committee held a meeting on Wednesday, June 1, and Thursday, June 2, 2016, at the National Rural Electric Cooperative Association, 4301 Wilson Blvd., Arlington, VA.

  6. Lecture: Women Who Don't Wait in Line (Thursday, Jan 28) | The...

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

    Lecture: Women Who Don't Wait in Line (Thursday, Jan 28) Lecture: Women Who Don't Wait in Line DATE: Thursday, January 28, 8:00 pm LOCATION: Great Hall, Memorial Union Reshma...

  7. Sandia Energy - David Wilson

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

    Wilson Home David Wilson David Wilson Mechanical Engineer Department: Water Power Technologies wilson-david...

  8. Throwback Thursdays Celebrate Scientific Supercomputing

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

    Throwback Thursdays Celebrate Scientific Supercomputing A Cray-1 supercomputer arrives at the Magnetic Fusion Energy Computer Center in A Cray-1 supercomputer arrives at the ...

  9. Throwback Thursdays Celebrate Scientific Supercomputing

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

    Home » News & Publications » News » Center News » Throwback Thursdays Celebrate Scientific Supercomputing Throwback Thursdays Celebrate Scientific Supercomputing A Cray-1 supercomputer arrives at the Magnetic Fusion Energy Computer Center in A Cray-1 supercomputer arrives at the Magnetic Fusion Energy Computer Center in May 1978. The U.S. Department of Energy (DOE) was investing in scientific supercomputing long before the internet became the internet, and back when clouds only came in

  10. Charles Wilson

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

    Charlie Wilson Title: Radiation Safety Officer Office Tel. : (225) 578-4616 Rm. 11

  11. FEMP First Thursday Update: FY2015 Government Performance Toward...

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

    FEMP First Thursday Update: FY2015 Government Performance Toward Energy and Sustainability Goals FEMP First Thursday Update: FY2015 Government Performance Toward Energy and ...

  12. FEMP First Thursday Update Provides Details about the 2016 Energy...

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

    FEMP First Thursday Update Provides Details about the 2016 Energy Exchange Training and Trade Show FEMP First Thursday Update Provides Details about the 2016 Energy Exchange ...

  13. Kenneth Wilson and Renormalization

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

    Kenneth Wilson and Renormalization Resources with Additional Information Kenneth Wilson Courtesy A&M-Commerce 'Kenneth G. Wilson ... was part of the generation of scientists who revolutionized physics in the 1970s and confirmed the quantum theories of physicists from the early 20th century ... . Wilson won the 1982 Nobel Prize in physics for his development of the Renormalization Group (RG) into a central tool in physics. ... He received a doctorate from the California Institute of

  14. FEMP First Thursday Seminar Offers Training on New Federal

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

    Energy-Efficiency Standards | Department of Energy First Thursday Seminar Offers Training on New Federal Energy-Efficiency Standards FEMP First Thursday Seminar Offers Training on New Federal Energy-Efficiency Standards February 24, 2014 - 5:26pm Addthis On April 3, 2014, the U.S. Department of Energy's Federal Energy Management Program (FEMP) will present a First Thursday Seminar on New Developments in Federal Energy Efficiency Standards. This training session will be led by Mark Halverson,

  15. FEMP First Thursday Update Covers Updates to 2016 Federal Energy...

    Energy Savers [EERE]

    Updates to 2016 Federal Energy and Water Management Awards Criteria FEMP First Thursday Update Covers Updates to 2016 Federal Energy and Water Management Awards Criteria January 7, 2016 ...

  16. Kenneth Wilson and Renormalization

    Office of Scientific and Technical Information (OSTI)

    He received a doctorate from the California Institute of Technology in 1961, and joined ... Additional Web Pages: Kenneth G. Wilson, California Institute of Technology (CalTech) New ...

  17. User briefing about next NERSC supercomputer on Thursday, May 1

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

    briefing about next NERSC supercomputer on Thursday, May 1 User briefing about next NERSC supercomputer on Thursday, May 1 April 29, 2014 by Richard Gerber NERSC will present a briefing for users about the just announced plan for the NERSC 8 supercomputer, to be named "Cori" in honor of biochemist Gerty Cori, the first American woman to be awarded a Nobel Prize. This presentation will be at the May NUG Web Conference on Thursday, May 1, at 11:00 PDT. It will include details on the

  18. FEMP First Thursday Seminar Covers Data Center Efficiency Best Practices |

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

    Department of Energy Data Center Efficiency Best Practices FEMP First Thursday Seminar Covers Data Center Efficiency Best Practices March 2, 2016 - 12:26pm Addthis FEMP First Thursday Seminar Covers Data Center Efficiency Best Practices The U.S. Department of Energy's Federal Energy Management Program (FEMP) will present Data Center Energy Efficiency Best Practices, a new First Thursday Seminar, on April 7, 2016, from 1:30 p.m. to 3 p.m. Executive Order (E.O.) 13693 establishes aggressive

  19. FEMP First Thursday Seminar Covers Executive Order 13693 Updates |

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

    Department of Energy Executive Order 13693 Updates FEMP First Thursday Seminar Covers Executive Order 13693 Updates November 6, 2015 - 5:14pm Addthis FEMP First Thursday Seminar Covers Executive Order 13693 Updates The U.S. Department of Energy Federal Energy Management Program (FEMP) will present a new First Thursday Seminar on December 3, 2015, from 1:30 p.m. to 3 p.m. Executive Order 13693: Recent Developments, Implementation Updates, and Opportunities. This seminar will provide learners

  20. First Thursday Seminar to Feature Roundtable of Federal Leaders

    Broader source: Energy.gov [DOE]

    The U.S. Department of Energy's Federal Energy Management Program (FEMP) will present Federal Thought Leaders Roundtable, a First Thursday Seminar scheduled for June 2, 2016, from 1:30 p.m. to 3 p.m.

  1. First Thursday Seminar Features Roundtable of Federal Leaders

    Broader source: Energy.gov [DOE]

    The U.S. Department of Energy's Federal Energy Management Program (FEMP) will present Federal Thought Leaders Roundtable, a First Thursday Seminar scheduled for June 2, 2016, from 1:30 p.m. to 3:00...

  2. FEMP First Thursday Seminar Covers Executive Order 13693 Updates...

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

    The U.S. Department of Energy Federal Energy Management Program (FEMP) will present a new ... FEMP First Thursday Seminars are designed for federal energy and facility managers but are ...

  3. User briefing about next NERSC supercomputer on Thursday, May...

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

    briefing about next NERSC supercomputer on Thursday, May 1 April 29, 2014 by Richard Gerber NERSC will present a briefing for users about the just announced plan for the NERSC 8...

  4. PLEASE NOTE THURSDAY DATE - COLLOQUIUM: Professor Ralph Roskies...

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

    May 23, 2013, 4:15pm to 5:30pm Colloquia MBG Auditorium PLEASE NOTE THURSDAY DATE - COLLOQUIUM: Professor Ralph Roskies - "Big Data at the Pittsburgh Supercomputing Center" ...

  5. FEMP First Thursday Update Covers Fiscal Year 2015 Government Performance

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

    Toward Energy and Sustainability Goals | Department of Energy Covers Fiscal Year 2015 Government Performance Toward Energy and Sustainability Goals FEMP First Thursday Update Covers Fiscal Year 2015 Government Performance Toward Energy and Sustainability Goals July 6, 2016 - 2:03pm Addthis The U.S. Department of Energy's (DOE) Federal Energy Management Program (FEMP) will present Fiscal Year 2015 Government Performance Toward Energy and Sustainability Goals, a new First Thursday Update on

  6. FEMP First Thursday Update Covers Strategies for Renewable Energy Deployment

    Broader source: Energy.gov [DOE]

    The U.S. Department of Energy’s (DOE) Federal Energy Management Program (FEMP) will present Strategic Portfolio Planning for Renewable Energy Deployment: REopt, a new First Thursday Update webinar on January 7, 2015, from 1:30 p.m. to 2:30 p.m.

  7. Fermilab Today

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

    Status Flags at full staff Wilson Hall Cafe Thursday, Feb. 19 - Breakfast: Canadian bacon, egg and cheese Texas toast - Breakfast: all-American breakfast - Chicken cordon bleu...

  8. Wednesday Thursday Friday Saturday Sunday Monday Tuesday Wednesday

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

    Wednesday Thursday Friday Saturday Sunday Monday Tuesday Wednesday Thursday Friday 2/18/2015 2/19/2015 2/20/2015 2/21/2015 2/22/2015 2/23/2015 2/24/2015 2/25/2015 2/26/2015 2/27/2015 07:30 AM Bus leaves hotel at 7:30 Hotel Check-Out 07:30 AM 08:00 AM Badge Office Bus leaves hotel at 8:00 Bus leaves hotel at 8:00 Bus leaves hotel at 8:00 Bus leaves hotel at 8:00 Bus leaves hotel at 8:00 Bus leaves hotel at 8:00 Bus leaves hotel at 8:00 08:00 AM 08:30 AM Welcome/Logistics Student Pres. 1 08:30 AM

  9. Wilson TurboPower | Open Energy Information

    Open Energy Info (EERE)

    search Logo: Wilson TurboPower Name: Wilson TurboPower Address: 55 Sixth Street Place: Woburn, Massachusetts Zip: 01801 Region: Greater Boston Area Sector: Efficiency Product:...

  10. Scott Wilson Oceans | Open Energy Information

    Open Energy Info (EERE)

    Wilson Oceans Jump to: navigation, search Name: Scott Wilson Oceans Place: Chesterfield, United Kingdom Zip: S30 1JF Sector: Wind energy Product: Specialist in the engineering of...

  11. Thursday, June 17, 2010 | National Nuclear Security Administration | (NNSA)

    National Nuclear Security Administration (NNSA)

    Thursday, June 17, 2010 Administrator D'Agostino is traveling to Prague for the last leg of his trip. Administrator D'Agostino is traveling to Prague for the last leg of his trip. After several days of meetings with our partners in Tbilisi and Moscow, I'm excited to be heading to Prague tomorrow. Of course, I've enjoyed the opportunity to see some of our cooperative efforts in action, and our Georgian and Russian hosts have been more than gracious. But my visit to Prague, the site of President

  12. COLLOQUIUM: NOTE SPECIAL DATE - THURSDAY: Unique Vulnerability of the New

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

    York/New Jersey Metro Region to Hurricane Destruction - A New Perspective Based on Recent Research on Irene 2011 and Sandy 2012 | Princeton Plasma Physics Lab February 28, 2013, 4:15pm to 5:30pm Colloquia MBG Auditorium COLLOQUIUM: NOTE SPECIAL DATE - THURSDAY: Unique Vulnerability of the New York/New Jersey Metro Region to Hurricane Destruction - A New Perspective Based on Recent Research on Irene 2011 and Sandy 2012 Professor Nicholas K. Coch Queens College CUNY In the last two years. the

  13. FEMP First Thursday Update Provides Details about the 2016 Energy Exchange

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

    Training and Trade Show | Department of Energy Provides Details about the 2016 Energy Exchange Training and Trade Show FEMP First Thursday Update Provides Details about the 2016 Energy Exchange Training and Trade Show April 6, 2016 - 3:38pm Addthis FEMP First Thursday Update Provides Details about the 2016 Energy Exchange Training and Trade Show The U.S. Department of Energy Federal Energy Management Program (FEMP) will host 2016 Energy Exchange Update, a First Thursday Update webinar on May

  14. Electricity Advisory Committee Meeting Presentations June 2013- Thursday, June 6, 2013

    Office of Energy Efficiency and Renewable Energy (EERE)

    The Department of Energy's Electricity Advisory Committee held a meeting on Wednesday, June 5 and Thursday, June 6 at the National Rural Electric Cooperative Association (NRECA).

  15. Dr. David Wilson | Department of Energy

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

    David Wilson About Us Dr. David Wilson - President, Morgan State University Dr. David Wilson Dr. David Wilson, the 10th inaugurated president of Morgan State University, has a long record of accomplishments and more than 30 years of experience in higher education administration. He holds four academic degrees: a B.S. in political science and an M.S. in education from Tuskegee University; a master's in educational planning and administration from Harvard University; and a doctorate in

  16. THURSDAY: Secretary Chu Welcomes Students and Tours Vehicles at EcoCAR's

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

    Finish Line | Department of Energy THURSDAY: Secretary Chu Welcomes Students and Tours Vehicles at EcoCAR's Finish Line THURSDAY: Secretary Chu Welcomes Students and Tours Vehicles at EcoCAR's Finish Line June 15, 2011 - 12:00am Addthis Washington, D.C. - On Thursday, June 16, 2011, Energy Secretary Steven Chu will welcome the sponsors and 16 student teams participating in EcoCAR: the NeXt Challenge, a three-year collegiate student engineering competition that focuses on advanced vehicle

  17. The 2nd US-China Energy Efficiency Forum Agenda - Thursday | Department of

    Office of Environmental Management (EM)

    Energy Thursday The 2nd US-China Energy Efficiency Forum Agenda - Thursday Complete agenda for the 2nd US-China Energy Efficiency Forum on Thursday, May 5, 2011, including speaker names and topics. agenda_en_final_050311_thu_agenda_en.pdf (209.15 KB) agenda_cn_final_050311_thu_agenda_cn.pdf (740.15 KB) More Documents & Publications The 2nd US-China Energy Efficiency Forum Agenda - Friday NTSF 2015 Agenda U.S. Department of Energy Building Energy Data Exchange Specification

  18. Join Us Thursday, Feb. 21 for a Google+ Hangout on the Impact of Open Data

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

    | Department of Energy Thursday, Feb. 21 for a Google+ Hangout on the Impact of Open Data Join Us Thursday, Feb. 21 for a Google+ Hangout on the Impact of Open Data February 20, 2013 - 5:17pm Addthis Join Us Thursday, Feb. 21 for a Google+ Hangout on the Impact of Open Data Matthew Loveless Matthew Loveless Data Integration Specialist, Office of Public Affairs How can I participate? Sign up at the Google+ Event page. Tweet questions to @ENERGY with the hashtag #AskEnergy. Ask us on the

  19. FEMP First Thursday Update: FY2015 Government Performance Toward Energy and

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

    Sustainability Goals | Department of Energy FEMP First Thursday Update: FY2015 Government Performance Toward Energy and Sustainability Goals FEMP First Thursday Update: FY2015 Government Performance Toward Energy and Sustainability Goals August 4, 2016 1:30PM to 2:30PM EDT Webcast The U.S. Department of Energy Federal Energy Management Program (FEMP) will present a new First Thursday Update webinar on August 4, 2016 from 1:30 p.m. to 2:30 p.m., Fiscal Year 2015 Government Performance Toward

  20. Miles Hall

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

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

  1. Interested in STEM? Join us for a Tweet-up This Thursday at 4pm ET

    Broader source: Energy.gov [DOE]

    Learn how the Energy Department is investing in the next generation of workers in the fields of science, technology, engineering, and math on Twitter this Thursday at 4:00pm ET.

  2. Tweet-up next Thursday! Chat with Michelle Fox about STEM in Education & the Workplace

    Broader source: Energy.gov [DOE]

    Michelle Fox will be taking questions via Twitter Thursday at 4:00pm ET about the importance of STEM education for U.S. competitiveness and economic growth.

  3. Photo of the Week: Throwback Thursday with AVIDAC | Department of Energy

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

    Throwback Thursday with AVIDAC Photo of the Week: Throwback Thursday with AVIDAC September 19, 2013 - 4:41pm Addthis In this photo, two Argonne researchers are pictured with Argonne's first digital computer, AVIDAC. Designed and built by Argonne's Physics Division for $250,000, it began operations on January 28, 1953. AVIDAC stands for "Argonne Version of the Institute's Digital Automatic Computer" and was based on architecture developed by mathematician John von Neumann.

  4. Wilson and Dalton | Open Energy Information

    Open Energy Info (EERE)

    and Dalton Jump to: navigation, search Name: Wilson and Dalton Place: Dalton, GA References: NREL Press Release1 Information About Partnership with NREL Partnership with NREL Yes...

  5. Zero point energy of renormalized Wilson loops (Journal Article...

    Office of Scientific and Technical Information (OSTI)

    Zero point energy of renormalized Wilson loops Citation Details In-Document Search Title: Zero point energy of renormalized Wilson loops The quark-antiquark potential, and its ...

  6. Don Cook discusses NNSA's Defense Programs at Woodrow Wilson...

    National Nuclear Security Administration (NNSA)

    NNSA's Defense Programs at Woodrow Wilson Center | National Nuclear Security ... Don Cook discusses NNSA's Defense Programs at Woodrow Wilson Center Cook at WW Don Cook, ...

  7. FEMP First Thursday Update Covers Updates to 2016 Federal Energy and Water Management Awards Criteria

    Broader source: Energy.gov [DOE]

    The U.S. Department of Energy Federal Energy Management Program (FEMP) will present a new First Thursday Update webinar on February 4, 2016 from 1:30 p.m. to 2:30 p.m., 2016 Federal Energy and Water Management Awards Updates.

  8. Take Our Daughters and Sons to Work Day- Thursday, April 24

    Broader source: Energy.gov [DOE]

    Department of Energy is proud to participate in Take Our Daughters and Sons to Work Day on Thursday, April 24. Join us at Forrestal for a welcome program, 9am-10am in the Main Auditorium, and for official Department of Energy photos from 10am-10:30am. RSVP to diversity@hq.doe.gov

  9. Fermilab | Newsroom | Press Releases | Media invited to attend...

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

    Steven Chu, June 2 Dr. Steven Chu, the United States Secretary of Energy, will give a public lecture at Fermilab on Thursday, June 2 at 8 p.m. at Ramsey Auditorium in Wilson Hall...

  10. Fermilab Today

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

    Wilson Hall Cafe Menu Chez Leon Wednesday, April 4 Lunch - Ropa Viejas (Flank Steak Shredded) - Sweet Plantain Mash - Coconut Cake wLime Filling Thursday, April 5 Dinner - Stuffed ...

  11. Jefferson Lab Experimental Hall D

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

    D Privacy and Security Notice Skip over navigation search Group This site's design is only visible in a graphical browser that supports web standards, but its content is accessible to any browser. Concerns? Hall D Navigation Hall D Main Hall D Engineering Hall D Staff Hall D Safety print version Hall D in October 2014 Related Links CEBAF at 12 GEV JLab Visitor's Center JLab Virtual Tour JLab page for scientists Experimental Hall A Experimental Hall B Experimental Hall C Hall D Task List - HDList

  12. WORKFORCE DIVERSITY TOWN HALL

    Energy Savers [EERE]

    ... fracturing our communities." Secretary Hillary Rodham Clinton WORKFORCE DIVERSITY TOWN HALL Agenda I. Welcome Mel Williams, Jr., Associate Deputy Secretary II. Opening Remarks Dr. ...

  13. Mary Hall Salishan

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

    From Hall et al, "Maximizing Multiprocessor Performance with the SUIF Compiler", IEEE Computer, Dec. 1996. 50% higher Specfp95 ratio than previously reported 3 1990s View *...

  14. NREL: Photovoltaics Research - Greg Wilson, D.Sc.

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

    Greg Wilson, D.Sc. Director, Materials Applications & Performance Center Co-Director, National Center for Photovoltaics Photo of Greg Wilson 303-384-7950 gregory.wilson@nrel.gov Dr. Greg Wilson is the Director of the Materials Applications and Performance Center and the Co-Director of the National Center for Photovoltaics (NCPV) at the National Renewable Energy Laboratory. He is responsible for NREL's capabilities in high-efficiency crystalline PV, PV cell and module performance, and PV

  15. Hall A Annual Report 2013

    SciTech Connect (OSTI)

    Dalton, Mark M.

    2014-02-01

    Report over the experimental activities in Hall A at Thomas Jefferson National Accelerator Facility during 2013.

  16. Hall Ammendment Policy

    Broader source: Energy.gov [DOE]

    Joint statement providing interim policy on processing proposals for leasing DOE real property using the authority in 42 U.S.C. 7256, commonly referred to as the "Hall Amendment."

  17. Jefferson Lab Experimental Hall B

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

    Hall B Privacy and Security Notice Skip over navigation search Group Please upgrade your browser. This site's design is only visible in a graphical browser that supports web standards, but its content is accessible to any browser. Concerns? Hall B Navigation Hall B Main CLAS CLAS12 Other Expts Run Info Publications Public Interest print version Hall B Main CLAS Collaboration and Hall B CLAS Collaboration Information Phonebook, Opt-in, and Database Reviews and Service Work Login Working Groups

  18. Greg Wilson to Lead National Center for Photovoltaics - News Releases |

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

    Greg Stewart About Us Greg Stewart - SLAC National Accelerator Laboratory Greg Stewart is a graphic designer for SLAC National Accelerator Laboratory, one of the Department of Energy's 17 National Laboratories. Most Recent Three Ways to Bust Ghostly Dark Matter March 30 NREL

    Greg Wilson to Lead National Center for Photovoltaics November 11, 2011 Photo of Dr. Gregory M. Wilson Dr. Gregory M. Wilson has been named director of the National Center for Photovoltaics at NREL. Dr. Gregory M.

  19. Unconventional Quantum Hall Effect and Tunable Spin Hall Effect...

    Office of Scientific and Technical Information (OSTI)

    to an Isolated MoS2 Trilayer Title: Unconventional Quantum Hall Effect and Tunable Spin Hall Effect in Dirac Materials: Application to an Isolated MoS2 Trilayer Authors: Li, ...

  20. Experimental Hall C | Jefferson Lab

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

    C Jefferson Lab has four experimental halls. Hall C is 150 feet in diameter and 60 feet tall. Hall C houses a High Momentum Spectrometer and provides space for large-installation experiments. These are stand-alone experiments requiring unique or highly specialized detectors, magnets and targeting systems. The research equipment in Hall C is used to study the weak charge of the proton, form factors of simple quark systems, the transition from hadrons to quarks and nuclei with a strange quark

  1. NLO evolution of 3-quark Wilson loop operator

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

    Balitsky, I.; Grabovsky, A. V.

    2015-01-07

    It is well known that high-energy scattering of a meson from some hadronic target can be described by the interaction of that target with a color dipole formed by two Wilson lines corresponding to fast quark-antiquark pair. Moreover, the energy dependence of the scattering amplitude is governed by the evolution equation of this color dipole with respect to rapidity. Similarly, the energy dependence of scattering of a baryon can be described in terms of evolution of a three-Wilson-lines operator with respect to the rapidity of the Wilson lines. We calculate the evolution of the 3-quark Wilson loop operator in themore » next-to-leading order (NLO) and present a quasi-conformal evolution equation for a composite 3-Wilson-lines operator. Thus we also obtain the linearized version of that evolution equation describing the amplitude of the odderon exchange at high energies.« less

  2. Modeling the Hall Thruster

    SciTech Connect (OSTI)

    Fisch, N.J.; Fruchtman, A.

    1998-08-01

    The acceleration of the plasma in the Hall thruster to supersonic velocities is examined by the use of a steady state model. Flows that are smooth across the sonic transition plane are found. The possibility of generating flows in which the acceleration across the sonic plane is abrupt, is also studied.

  3. Wilson Dslash Kernel From Lattice QCD Optimization

    SciTech Connect (OSTI)

    Joo, Balint; Smelyanskiy, Mikhail; Kalamkar, Dhiraj D.; Vaidyanathan, Karthikeyan

    2015-07-01

    Lattice Quantum Chromodynamics (LQCD) is a numerical technique used for calculations in Theoretical Nuclear and High Energy Physics. LQCD is traditionally one of the first applications ported to many new high performance computing architectures and indeed LQCD practitioners have been known to design and build custom LQCD computers. Lattice QCD kernels are frequently used as benchmarks (e.g. 168.wupwise in the SPEC suite) and are generally well understood, and as such are ideal to illustrate several optimization techniques. In this chapter we will detail our work in optimizing the Wilson-Dslash kernels for Intel Xeon Phi, however, as we will show the technique gives excellent performance on regular Xeon Architecture as well.

  4. Bob Wilson and The Birth of Fermilab

    ScienceCinema (OSTI)

    Edwin L. Goldwasser

    2010-01-08

    In the 1960?s the Lawrence Berkeley Laboratory (then The Lawrence Radiation Laboratory) submitted two proposals to build the next high energy physics research laboratory. The first included a 200 GeV accelerator and associated experimental facilities. The cost was $350 million. The Bureau of the Budget rejected that proposal as a ?budget buster?. It ruled that $250 million was the maximum that could be accepted. The second proposal was for a reduced scope laboratory that met the Bureau of the Budget?s cost limitation, but it was for a lower energy accelerator and somewhat smaller and fewer experimental facilities. The powerful Congressional Joint Committee on Atomic Energy rejected the reduced scope proposal as inadequate to provide physics results of sufficient interest to justify the cost. It was then that Bob Wilson came forth with a third proposal, coping with that ?Catch 22? and leading to the creation of Fermilab. How he did it will be the subject of this colloquium.

  5. Experimental Hall A | Jefferson Lab

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

    A Jefferson Lab has four experimental halls. Hall A is the largest of these four experimental staging areas. It is 174 feet across and 80 feet tall from the floor to the highest spot on its domed ceiling. The foundation for the hall is 35 feet below ground. Hall A is outfitted with two primary detector systems - both high-resolution spectrometers, each weighing about 3 million pounds or 1,500 short tons. The hall is used primarily for experiments that study the structure of the nucleus and the

  6. Cylindrical geometry hall thruster

    DOE Patents [OSTI]

    Raitses, Yevgeny; Fisch, Nathaniel J.

    2002-01-01

    An apparatus and method for thrusting plasma, utilizing a Hall thruster with a cylindrical geometry, wherein ions are accelerated in substantially the axial direction. The apparatus is suitable for operation at low power. It employs small size thruster components, including a ceramic channel, with the center pole piece of the conventional annular design thruster eliminated or greatly reduced. Efficient operation is accomplished through magnetic fields with a substantial radial component. The propellant gas is ionized at an optimal location in the thruster. A further improvement is accomplished by segmented electrodes, which produce localized voltage drops within the thruster at optimally prescribed locations. The apparatus differs from a conventional Hall thruster, which has an annular geometry, not well suited to scaling to small size, because the small size for an annular design has a great deal of surface area relative to the volume.

  7. Kenneth%20Geddes%20Wilson.jpg | OSTI, US Dept of Energy Office of

    Office of Scientific and Technical Information (OSTI)

    Scientific and Technical Information Kenneth%20Geddes%20Wilson

  8. Wilson TurboPower Inc | Open Energy Information

    Open Energy Info (EERE)

    of heat exchanger technology that was founded to commercialise the research of Prof. David Gordon Wilson from MIT. Coordinates: 42.479195, -71.150604 Show Map Loading map......

  9. Secretary Moniz Opening Remarks at the Wilson Center: "Iran's...

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

    Secretary Moniz Opening Remarks at the Wilson Center: "Iran's Nuclear Agreement"-- As Delivered February 2, 2016 - 12:00pm Addthis Dr. Ernest Moniz Dr. Ernest Moniz Secretary of ...

  10. Polymorphic microsatellites and Wilson disease (WD)

    SciTech Connect (OSTI)

    Stewart, E.A.; Cavalli-Sforza, L.L. ); White, A.; Tomfohrde, J.; Osborne-Lawrence, S.; Prestidge, L.; Bowcock, A.M. ); Bonne-Tamir, B.; Scheinberg, I.H.; George-Hyslop, P.; Giagheddu, M.; Kim, J.W.; Seo, J.K.; Lo, W.H.Y.; Ivanova-Smolenskaya, I.A.; Limborska, S.A.; Farrer, L.A.

    1993-10-01

    Wilson disease (WD), an autosomal recessive disorder of copper metabolism, has been previously mapped to chromosome 13q. Highly informative PCR-based polymorphic microsatellites closely linked to the WD locus (WND) at 13q14.3, as well as sequence-tagged sites for closely linked loci, are described. Two polymorphic microsatellite markers at D13S118 and D13S119 lie within 3 cM of WND. Two others (D13S227 and D13S228) were derived from a yeast artificial chromosome containing D13S31. These were placed on a genetic linkage map of chromosome 13 and were typed in 74 multiplex WD families from a variety of geographic origins (166 affected members). Multipoint analysis provides very high odds that the location of WND is between D13S31/D13S227/D13S228 and D13S59. Previous odds with RFLP-based markers were only 7:1 more likely than any other location. Current odds are 5,000:1. Preclinical testing of three cases of WD by using the highly informative polymorphic microsatellite markers is described. The markers described ensure that 95% of predictive tests using DNA from both parents and from at least one affected sib will have an accuracy >99%. 29 refs., 2 figs., 3 tabs.

  11. Experimental Hall B | Jefferson Lab

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

    and electromagnetic calorimeters for electron and neutral particle identification. Major research programs in Hall B include experiments to measure the spectrum of excited ...

  12. ARM - Welcome to Study Hall

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

    Barrow, Alaska Tropical Western Pacific Site Tours Contacts Students Study Hall About ARM Global Warming FAQ Just for Fun Meet our Friends Cool Sites Teachers Teachers' Toolbox ...

  13. Experimental Hall B | Jefferson Lab

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

    B Jefferson Lab has four experimental halls. Hall B is the smallest of the experimental staging areas. It is 98 feet in diameter and 65 feet from floor to ceiling. Experiments that take data in Hall B employ beams of either electrons or photons. From 1995 to 2012, the heart of the Hall B physics program involved the use of the CEBAF Large Acceptance Spectrometer, or CLAS. This detector system spanned nearly the full angular range about the target and was specifically developed for the study of

  14. Experimental Hall D | Jefferson Lab

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

    D A fourth experimental hall, known as Hall D, is currently under construction and is scheduled to begin experiments in 2015. The Hall D project consists of an extension to the accelerator tunnel to house a new beam transport line, a dedicated magnet to tag photons created in beam-target interactions, a counting house, cryogenics plant and service buildings. When it is completed, Hall D will make it possible for scientists to study what are known as exotic mesons or hybrids. You can learn more

  15. Town Hall Questions Answered

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

    8, 2014 CBFO Manager's weekly update to local residents Read Carlsbad Field Office Manager Joe Franco's letter to Eddy and Lea County residents for the week of April 14: at http://1.usa.gov/1mkxm7b Town Hall Questions Answered Q. What is the condition of Panel 7 right now? A. Work teams entering the underground facility as part of ongoing Phase 3 activities are still working to determine the full condition of Panel 7. Initial entries indicate good roof conditions. Q. What's the presumed reason

  16. Forest County Potawatomi Community Wundar Hall Project

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

    ... Wundar Hall Project Wundar Hall is a 34,000 sq ft building located on the former ... by the Tribe and taken into Trust in 1990. Wundar Hall is currently not in use. ...

  17. QER- Comment of Addison Hall

    Broader source: Energy.gov [DOE]

    I and my family own land in Ashfield next to the proposed Kinder Morgan/Tennessee Pipeline route. We are opposed to the pipeline for a variety of reasons, including the highly questionable need for the proposed commodity increase and the inevitable damage to the environment and communities along the proposed route. Addison Hall for the Hall Family Trust.

  18. Anthony Kathryn Hall | Open Energy Information

    Open Energy Info (EERE)

    Anthony Kathryn Hall Jump to: navigation, search Name: Anthony & Kathryn Hall Place: United Kingdom Sector: Wind energy Product: UK-based private wind farm in Highland. References:...

  19. Second Generation Fractional Quantum Hall Effect

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

    Generation Fractional Quantum Hall Effect - Sandia Energy Energy Search Icon Sandia Home ... Second Generation Fractional Quantum Hall Effect HomeHighlights - Energy Research...

  20. Tuning giant anomalous Hall resistance ratio in perpendicular Hall balance

    SciTech Connect (OSTI)

    Zhang, J. Y.; Yang, G.; Wang, S. G. E-mail: ghyu@mater.ustb.edu.cn; Liu, J. L.; Wang, R. M.; Amsellem, E.; Kohn, A.; Yu, G. H. E-mail: ghyu@mater.ustb.edu.cn

    2015-04-13

    Anomalous Hall effect at room temperature in perpendicular Hall balance with a core structure of [Pt/Co]{sub 4}/NiO/[Co/Pt]{sub 4} has been tuned by functional CoO layers, where [Pt/Co]{sub 4} multilayers exhibit perpendicular magnetic anisotropy. A giant Hall resistance ratio up to 69 900% and saturation Hall resistance (R{sub S}{sup P}) up to 2590 mΩ were obtained in CoO/[Pt/Co]{sub 4}/NiO/[Co/Pt]{sub 4}/CoO system, which is 302% and 146% larger than that in the structure without CoO layers, respectively. Transmission electron microscopy shows highly textured [Co/Pt]{sub 4} multilayers and oxide layers with local epitaxial relations, indicating that the crystallographic structure has significant influence on spin dependent transport properties.

  1. Science and Energy Town Hall

    Broader source: Energy.gov [DOE]

    Watch a live broadcast of the Science & Energy Town Hall on Wednesday, January 20, 2016 from 2:30 p.m. to 3:30 p.m. EST.

  2. Sec. Chu Online Town Hall

    Office of Energy Efficiency and Renewable Energy (EERE)

    Secretary Steven Chu hosted an online town hall to discuss the clean energy and innovation agenda President Obama laid out in his 2011 State of the Union address. (January 26, 2011)

  3. Experimental Hall C | Jefferson Lab

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

    in Hall C is used to study the weak charge of the proton, form factors of simple quark systems, the transition from hadrons to quarks and nuclei with a strange quark embedded....

  4. Optimization of Cylindrical Hall Thrusters

    SciTech Connect (OSTI)

    Yevgeny Raitses, Artem Smirnov, Erik Granstedt, and Nathaniel J. Fi

    2007-07-24

    The cylindrical Hall thruster features high ionization efficiency, quiet operation, and ion acceleration in a large volume-to-surface ratio channel with performance comparable with the state-of-the-art annular Hall thrusters. These characteristics were demonstrated in low and medium power ranges. Optimization of miniaturized cylindrical thrusters led to performance improvements in the 50-200W input power range, including plume narrowing, increased thruster efficiency, reliable discharge initiation, and stable operation. __________________________________________________

  5. Optimization of Cylindrical Hall Thrusters

    SciTech Connect (OSTI)

    Yevgeny Raitses, Artem Smirnov, Erik Granstedt, and Nathaniel J. Fisch

    2007-11-27

    The cylindrical Hall thruster features high ionization efficiency, quiet operation, and ion acceleration in a large volume-to-surface ratio channel with performance comparable with the state-of-the-art annular Hall thrusters. These characteristics were demonstrated in low and medium power ranges. Optimization of miniaturized cylindrical thrusters led to performance improvements in the 50-200W input power range, including plume narrowing, increased thruster efficiency, reliable discharge initiation, and stable operation.

  6. Chatfield v. Wilson, 31 Vt. 358, 262-63 (1858) | Open Energy...

    Open Energy Info (EERE)

    Chatfield v. Wilson, 31 Vt. 358, 262-63 (1858) Jump to: navigation, search OpenEI Reference LibraryAdd to library Legal CaseHearing: Chatfield v. Wilson, 31 Vt. 358, 262-63...

  7. Rapidity evolution of Wilson lines at the next-to-leading order

    SciTech Connect (OSTI)

    Balitsky, Ian; Chirilli, Giovanni

    2013-12-01

    At high energies particles move very fast so the proper degrees of freedom for the fast gluons moving along the straight lines are Wilson-line operators - infinite gauge factors ordered along the line. In the framework of operator expansion in Wilson lines the energy dependence of the amplitudes is determined by the rapidity evolution of Wilson lines. We present the next-to-leading order hierarchy of the evolution equations for Wilson-line operators.

  8. Spin Hall controlled magnonic microwaveguides

    SciTech Connect (OSTI)

    Demidov, V. E.; Urazhdin, S.; Rinkevich, A. B.; Reiss, G.; Demokritov, S. O.

    2014-04-14

    We use space-resolved magneto-optical spectroscopy to study the influence of spin Hall effect on the excitation and propagation of spin waves in microscopic magnonic waveguides. We find that the spin Hall effect not only increases the spin-wave propagation length, but also results in an increased excitation efficiency due to the increase of the dynamic susceptibility in the vicinity of the inductive antenna. We show that the efficiency of the propagation length enhancement is strongly dependant on the type of the excited spin-wave mode and its wavelength.

  9. Jefferson Lab Experimental Hall C

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

    C Privacy and Security Notice Skip over navigation search Group This site's design is only visible in a graphical browser that supports web standards, but its content is accessible to any browser. Concerns? Hall C Navigation Users Public Interest print version HES, HKS and Splitter Qweak spectrometer used to measure proton weak charge 12 GeV Upgrade Upgrade information 12 GeV Experiments SHMS-HMS User's Group User's Group mailing list Newsletter 12 GeV wiki Hall C Collaboration Information

  10. Town Hall meeting | OpenEI Community

    Open Energy Info (EERE)

    picture Submitted by Graham7781(2017) Super contributor 16 November, 2012 - 11:23 LEDS the focus of Monday's 10 a.m. Town Hall Meeting LEDS Town Hall meeting What: OpenEI's...

  11. Thursday, November 10, 2005

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

  12. Dr Lane Wilson | U.S. DOE Office of Science (SC)

    Office of Science (SC) Website

    Lane Wilson Materials Sciences and Engineering (MSE) Division MSE Home About Staff What's New Research Areas Reports and Activities Science Highlights Principal Investigators' Meetings BES Home Staff Dr. Lane Wilson Print Text Size: A A A FeedbackShare Page Wilson Program Manager X-ray Scatttering Materials Sciences and Engineering Division Office of Basic Energy Sciences SC-22.2/Germantown Building, Rm F-411 U.S. Department of Energy 1000 Independence Avenue, SW Washington, D.C. 20585-1290

  13. Open Wilson lines and chiral condensates in thermal holographic QCD

    SciTech Connect (OSTI)

    Argyres, Philip C.; Edalati, Mohammad; Leigh, Robert G.; Vazquez-Poritz, Justin F.

    2009-02-15

    We investigate various aspects of a proposal by Aharony and Kutasov [O. Aharony and D. Kutasov, Phys. Rev. D 78, 026005 (2008).] for the gravity dual of an open Wilson line in the Sakai-Sugimoto model or its noncompact version. In particular, we use their proposal to determine the effect of finite temperature, as well as background electric and magnetic fields, on the chiral symmetry breaking order parameter. We also generalize their prescription to more complicated worldsheets and identify the operators dual to such worldsheets.

  14. The fluctuation induced Hall effect

    SciTech Connect (OSTI)

    Shen, W.; Prager, S.C.

    1993-02-01

    The fluctuation induced Hall term, [le][approximately][ovr J] [times] [approximately][ovr B][ge], has been measured in the MST reversed field pinch. The term is of interest as a possible source of current self-generation (dynamo). It is found to be non-negligible, but small in that it can account for less than 25% of the dynamo driven current.

  15. The fluctuation induced Hall effect

    SciTech Connect (OSTI)

    Shen, W.; Prager, S.C.

    1993-02-01

    The fluctuation induced Hall term, {le}{approximately}{ovr J} {times} {approximately}{ovr B}{ge}, has been measured in the MST reversed field pinch. The term is of interest as a possible source of current self-generation (dynamo). It is found to be non-negligible, but small in that it can account for less than 25% of the dynamo driven current.

  16. WILSON-BAPPU EFFECT: EXTENDED TO SURFACE GRAVITY

    SciTech Connect (OSTI)

    Park, Sunkyung; Kang, Wonseok; Lee, Jeong-Eun; Lee, Sang-Gak E-mail: wskang@khu.ac.kr E-mail: sanggak@snu.ac.kr

    2013-10-01

    In 1957, Wilson and Bappu found a tight correlation between the stellar absolute visual magnitude (M{sub V} ) and the width of the Ca II K emission line for late-type stars. Here, we revisit the Wilson-Bappu relationship (WBR) to claim that the WBR can be an excellent indicator of stellar surface gravity of late-type stars as well as a distance indicator. We have measured the width (W) of the Ca II K emission line in high-resolution spectra of 125 late-type stars obtained with the Bohyunsan Optical Echelle Spectrograph and adopted from the Ultraviolet and Visual Echelle Spectrograph archive. Based on our measurement of the emission line width (W), we have obtained a WBR of M{sub V} = 33.76 - 18.08 log W. In order to extend the WBR to being a surface gravity indicator, stellar atmospheric parameters such as effective temperature (T{sub eff}), surface gravity (log g), metallicity ([Fe/H]), and micro-turbulence ({xi}{sub tur}) have been derived from self-consistent detailed analysis using the Kurucz stellar atmospheric model and the abundance analysis code, MOOG. Using these stellar parameters and log W, we found that log g = -5.85 log W+9.97 log T{sub eff} - 23.48 for late-type stars.

  17. Henderson Hall's Education and Career Fair

    Broader source: Energy.gov [DOE]

    Location: Smith Gym, Henderson Hall, Arlington, VAPOC: Donna FriendWebsite: http://www.mccshh.com/EducationCareerFairFall2014.html

  18. Building Green in Greensburg: City Hall Building

    Broader source: Energy.gov [DOE]

    This poster highlights energy efficiency, renewable energy, and sustainable features of the high-performing City Hall building in Greensburg, Kansas.

  19. Rebuilding It Better: Greensburg, Kansas, City Hall

    SciTech Connect (OSTI)

    D. Egan

    2010-04-13

    This document showcases the LEED-Platinum designed Greensburg City Hall, which was rebuilt green, after a massive tornado destroyed Greensburg, Kansas in May 2007.

  20. Town Hall with Secretary Moniz

    ScienceCinema (OSTI)

    Energy Secretary Ernest Moniz; Deputy Secretary of Energy Daniel Poneman

    2013-07-25

    In a town hall meeting with Department staff, Energy Secretary Ernest Moniz spoke about his plans for a reorganization of the Energy Department?s management structure. The plans will help better achieve the Department?s key priorities and those of the President, including implementing the President?s Climate Action Plan, ?all of the above? energy strategy and nuclear security agenda. After his remarks, Moniz, joined by Deputy Secretary Dan Poneman, took questions from the audience in the Forrestal Auditorium as well as email questions from other Department locations.

  1. Hall-effect arc protector

    DOE Patents [OSTI]

    Rankin, Richard A.; Kotter, Dale K.

    1997-01-01

    The Hall-Effect Arc Protector is used to protect sensitive electronics from high energy arcs. The apparatus detects arcs by monitoring an electrical conductor, of the instrument, for changes in the electromagnetic field surrounding the conductor which would be indicative of a possible arcing condition. When the magnitude of the monitored electromagnetic field exceeds a predetermined threshold, the potential for an instrument damaging are exists and the control system logic activates a high speed circuit breaker. The activation of the breaker shunts the energy imparted to the input signal through a dummy load to the ground. After the arc condition is terminated, the normal signal path is restored.

  2. Hall-effect arc protector

    DOE Patents [OSTI]

    Rankin, R.A.; Kotter, D.K.

    1997-05-13

    The Hall-Effect Arc Protector is used to protect sensitive electronics from high energy arcs. The apparatus detects arcs by monitoring an electrical conductor, of the instrument, for changes in the electromagnetic field surrounding the conductor which would be indicative of a possible arcing condition. When the magnitude of the monitored electromagnetic field exceeds a predetermined threshold, the potential for an instrument damaging are exists and the control system logic activates a high speed circuit breaker. The activation of the breaker shunts the energy imparted to the input signal through a dummy load to the ground. After the arc condition is terminated, the normal signal path is restored. 2 figs.

  3. Portland State University Shattuck Hall

    High Performance Buildings Database

    Portland, OR Portland State's Shattuck hall was originally constructed as an elementary school in 1915. In 2007 the university undertook extensive renovations of the building to bring it up to current seismic requirements. In addition to structural improvements, the design team was able to upgraded the building's aging mechanical and electrical systems, upgrade plumbing, and restore the large light wells that bring daylight into the U-shaped building. The resulting building houses Portland State's Architecture department, where students are able to learn from the exposed building systems.

  4. Town Hall with Secretary Moniz

    SciTech Connect (OSTI)

    Energy Secretary Ernest Moniz; Deputy Secretary of Energy Daniel Poneman

    2013-07-18

    In a town hall meeting with Department staff, Energy Secretary Ernest Moniz spoke about his plans for a reorganization of the Energy Department’s management structure. The plans will help better achieve the Department’s key priorities and those of the President, including implementing the President’s Climate Action Plan, “all of the above” energy strategy and nuclear security agenda. After his remarks, Moniz, joined by Deputy Secretary Dan Poneman, took questions from the audience in the Forrestal Auditorium as well as email questions from other Department locations.

  5. Charge carrier coherence and Hall effect in organic semiconductors...

    Office of Scientific and Technical Information (OSTI)

    Charge carrier coherence and Hall effect in organic semiconductors Citation Details In-Document Search Title: Charge carrier coherence and Hall effect in organic semiconductors ...

  6. Quantum Hall effects in a Weyl semimetal: Possible application...

    Office of Scientific and Technical Information (OSTI)

    Quantum Hall effects in a Weyl semimetal: Possible application in pyrochlore iridates Title: Quantum Hall effects in a Weyl semimetal: Possible application in pyrochlore iridates ...

  7. Reduced spin-Hall effects from magnetic proximity (Journal Article...

    Office of Scientific and Technical Information (OSTI)

    Reduced spin-Hall effects from magnetic proximity Prev Next Title: Reduced spin-Hall effects from magnetic proximity Authors: Zhang, Wei ; Jungfleisch, Matthias B. ; Jiang, ...

  8. Topological Hubbard Model and Its High-Temperature Quantum Hall...

    Office of Scientific and Technical Information (OSTI)

    Topological Hubbard Model and Its High-Temperature Quantum Hall Effect Title: Topological Hubbard Model and Its High-Temperature Quantum Hall Effect Authors: Neupert, Titus ; ...

  9. Data acquisition system of Moeller polarimeter Hall A Jefferson...

    Office of Scientific and Technical Information (OSTI)

    Data acquisition system of Moeller polarimeter Hall A Jefferson Lab (in Russian) Citation Details In-Document Search Title: Data acquisition system of Moeller polarimeter Hall A ...

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

    Energy Savers [EERE]

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

  11. Microscopic theory of quantum anomalous Hall effect in graphene...

    Office of Scientific and Technical Information (OSTI)

    Microscopic theory of quantum anomalous Hall effect in graphene Citation Details In-Document Search Title: Microscopic theory of quantum anomalous Hall effect in graphene Authors: ...

  12. Hall County, Texas: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    B. Places in Hall County, Texas Estelline, Texas Lakeview, Texas Memphis, Texas Turkey, Texas Retrieved from "http:en.openei.orgwindex.php?titleHallCounty,Texas&oldid...

  13. The quantum Hall effect helicity

    SciTech Connect (OSTI)

    Shrivastava, Keshav N.

    2015-04-16

    The quantum Hall effect in semiconductor heterostructures is explained by two signs in the angular momentum j=l±s and g=(2j+1)/(2l+1) along with the Landau factor (n+1/2). These modifications in the existing theories explain all of the fractional charges. The helicity which is the sign of the product of the linear momentum with the spin p.s plays an important role for the understanding of the data at high magnetic fields. In particular it is found that particles with positive sign in the spin move in one direction and those with negative sign move in another direction which explains the up and down stream motion of the particles.

  14. OSDBU Federal Contracting Town Hall Meeting

    Office of Energy Efficiency and Renewable Energy (EERE)

    In June of 2015, John Hale III, Director of the Office of Small and Disadvantaged Business Utilization, served as the moderator for the Federal Contracting Town Hall Meeting during the CelebrAsian...

  15. Experiment Hall & Beamline | Advanced Photon Source

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

    1104-m-circumference optical bench. The hall floor is made of 1-ft-thick poured concrete. Usual practice in poured concrete construction is the use of evenly spaced cuts in...

  16. OpenEI Community - Town Hall meeting

    Open Energy Info (EERE)

    st, 2012 http:en.openei.orgcommunityblogtown-hall-meeting-october-1st-2012

  17. QCD at nonzero density and canonical partition functions with Wilson fermions

    SciTech Connect (OSTI)

    Alexandru, Andrei; Wenger, Urs

    2011-02-01

    We present a reduction method for Wilson-Dirac fermions with nonzero chemical potential which generates a dimensionally reduced fermion matrix. The size of the reduced fermion matrix is independent of the temporal lattice extent and the dependence on the chemical potential is factored out. As a consequence the reduced matrix allows a simple evaluation of the Wilson fermion determinant for any value of the chemical potential and hence the exact projection to the canonical partition functions.

  18. DOE2016 Exhibit Hall | Department of Energy

    Energy Savers [EERE]

    Exhibit Hall DOE2016 Exhibit Hall Addthis 1 of 25 2 of 25 3 of 25 4 of 25 5 of 25 6 of 25 7 of 25 8 of 25 9 of 25 10 of 25 11 of 25 12 of 25 13 of 25 14 of 25 15 of 25 16 of 25 17 of 25 18 of 25 19 of 25 20 of 25 21 of 25 22 of 25 23 of 25 24 of 25 25 of 25

  19. Hypernuclei in Hall C | Jefferson Lab

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

    Hypernuclei in Hall C Hypernuclei in Hall C High Resolution Electron Spectrometer The High Resolution Electron Spectrometer (teal and red, top left) was recently built with a grant from Japan's Ministry of Education, Culture, Sports, Science and Technology. The ministry also funded the new splitter magnet (dark green) and the High Resolution Kaon Spectrometer (purple and light green, top right). Nuclear scientists have gone to great lengths to pry open the nucleus and peer deep inside. They've

  20. Forest County Potawatomi Community Parking Ramp and Wundar Hall...

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

    ... into Trust in 1990 The Tribe has been leasing to a long-term tenant whose lease will end in July 2010 Wundar Hall Project Wundar Hall is a 34,000 sq ft dormitory building ...

  1. TBB-0042- In the Matter of Curtis Hall

    Broader source: Energy.gov [DOE]

    This letter concerns the complaint of retaliation filed by Curtis Hall (the complainant or Mr. Hall) with the Department of Energy under 10 C . F. R. Part 7 0 8 , the DOE Con tractor Employee ...

  2. Phase transitions in quantum Hall multiple layer systems

    SciTech Connect (OSTI)

    Pusep, Yu A.; Fernandes dos Santos, L.; Smirnov, D.; Bakarov, A. K.; Toropov, A. I.

    2013-12-04

    Polarized photoluminescence from multiple well electron systems was studied in the regime of the integer quantum Hall effect. Two quantum Hall ferromagnetic ground states assigned to the uncorrelated miniband quantum Hall state and to the spontaneous interwell phase coherent dimer quantum Hall state were observed. The photoluminescence associated with these states exhibits features caused by finite-size skyrmions. The depolarization of the ferromagnetic ground state was observed in bilayer system.

  3. Effective Field Theory of Fractional Quantized Hall Nematics (Journal

    Office of Scientific and Technical Information (OSTI)

    Article) | SciTech Connect Effective Field Theory of Fractional Quantized Hall Nematics Citation Details In-Document Search Title: Effective Field Theory of Fractional Quantized Hall Nematics We present a Landau-Ginzburg theory for a fractional quantized Hall nematic state and the transition to it from an isotropic fractional quantum Hall state. This justifies Lifshitz-Chern-Simons theory - which is shown to be its dual - on a more microscopic basis and enables us to compute a ground state

  4. Spring 2015 Henderson Hall Education and Career Fair

    Office of Energy Efficiency and Renewable Energy (EERE)

    Location: Smith Gym, Henderson Hall, Arlington, VAPOC: DOECorporateRecruitment@hq.doe.govWebsite: http://bit.ly/1FRIJOF

  5. Diversity and Inclusion Town Hall Program Book | Department of Energy

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

    Town Hall Program Book Diversity and Inclusion Town Hall Program Book As part of a larger effort to create a culture that values diversity, we have been conducting focus groups to engage in a dialog and hear feedback on how diversity can be improved. At the Town Hall, DOE employees will hear the results of these discussions. View the program booklet from the Diversity and Inclusion Town Hall below. For more information about the Department's diversity and inclusion programs, visit

  6. Parametric Investigations of Non-Conventional Hall Thruster

    SciTech Connect (OSTI)

    Raitses, Y.; Fisch, N.J.

    2001-01-12

    Hall thrusters might better scale to low power with non-conventional geometry. A 9 cm cylindrical, ceramic-channel, Hall thruster with a cusp-type magnetic field distribution has been investigated. It exhibits discharge characteristics similar to conventional coaxial Hall thrusters, but does not expose as much channel surface. Significantly, its operation is not accompanied by large amplitude discharge low frequency oscillations.

  7. Robert R. Wilson, 1984 | U.S. DOE Office of Science (SC)

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

    Robert R. Wilson, 1984 The Enrico Fermi Award Fermi Award Home Nomination & Selection Guidelines Award Laureates 2010's 2000's 1990's 1980's 1970's 1960's 1950's Ceremony The Life of Enrico Fermi Contact Information The Enrico Fermi Award U.S. Department of Energy SC-2/Germantown Building 1000 Independence Ave., SW Washington, DC 20585 P: (301) 903-2411 E: Email Us 1980's Robert R. Wilson, 1984 Print Text Size: A A A FeedbackShare Page Citation For his outstanding contributions to physics

  8. Newmark-Hall synthetic history development

    SciTech Connect (OSTI)

    Aramayo, G.A.

    1990-11-01

    The methodology used to develop synthetic acceleration time histories with spectral content that envelopes the Newmark-Hall spectra is described. Six acceleration time histories are developed for two conditions of foundation and 3 critical damping factors. The target spectra corresponds to the mediam centered probability level.

  9. Moderate positive spin Hall angle in uranium

    SciTech Connect (OSTI)

    Singh, Simranjeet; Anguera, Marta; Barco, Enrique del E-mail: cwmsch@rit.edu; Springell, Ross; Miller, Casey W. E-mail: cwmsch@rit.edu

    2015-12-07

    We report measurements of spin pumping and the inverse spin Hall effect in Ni{sub 80}Fe{sub 20}/uranium bilayers designed to study the efficiency of spin-charge interconversion in a super-heavy element. We employ broad-band ferromagnetic resonance on extended films to inject a spin current from the Ni{sub 80}Fe{sub 20} (permalloy) into the uranium layer, which is then converted into an electric field by the inverse spin Hall effect. Surprisingly, our results suggest a spin mixing conductance of order 2 × 10{sup 19} m{sup −2} and a positive spin Hall angle of 0.004, which are both merely comparable with those of several transition metals. These results thus support the idea that the electronic configuration may be at least as important as the atomic number in governing spin pumping across interfaces and subsequent spin Hall effects. In fact, given that both the magnitude and the sign are unexpected based on trends in d-electron systems, materials with unfilled f-electron orbitals may hold additional exploration avenues for spin physics.

  10. Comparison of Secondary Islands in Collisional Reconnection to Hall Reconnection

    SciTech Connect (OSTI)

    Shepherd, L. S.; Cassak, P. A.

    2010-07-02

    Large-scale resistive Hall-magnetohydrodynamic simulations of the transition from Sweet-Parker (collisional) to Hall (collisionless) magnetic reconnection are presented; the first to separate secondary islands from collisionless effects. Three main results are described. There exists a regime with secondary islands but without collisionless effects, and the reconnection rate is faster than Sweet-Parker, but significantly slower than Hall reconnection. This implies that secondary islands do not cause the fastest reconnection rates. The onset of Hall reconnection ejects secondary islands from the vicinity of the X line, implying that energy is released more rapidly during Hall reconnection. Coronal applications are discussed.

  11. Fast Camera Imaging of Hall Thruster Ignition

    SciTech Connect (OSTI)

    C.L. Ellison, Y. Raitses and N.J. Fisch

    2011-02-24

    Hall thrusters provide efficient space propulsion by electrostatic acceleration of ions. Rotating electron clouds in the thruster overcome the space charge limitations of other methods. Images of the thruster startup, taken with a fast camera, reveal a bright ionization period which settles into steady state operation over 50 μs. The cathode introduces azimuthal asymmetry, which persists for about 30 μs into the ignition. Plasma thrusters are used on satellites for repositioning, orbit correction and drag compensation. The advantage of plasma thrusters over conventional chemical thrusters is that the exhaust energies are not limited by chemical energy to about an electron volt. For xenon Hall thrusters, the ion exhaust velocity can be 15-20 km/s, compared to 5 km/s for a typical chemical thruster

  12. The Honorable,Edward Rendell, '. City Hall

    Office of Legacy Management (LM)

    I:! i394 .\ . The Honorable,Edward Rendell, '. City Hall Philadelphia, Pennsylvania 19107 Dear Mayor Rendell : ', ,' . , Secretary of Energy Hazel O',teary has announced-a new approach.to.openness in the Department of Energy (DDE) and its communications with the public. . In support of this initiative, we are.pleased to forward the enclosed information related to the,former. Penn Salt Manufacturing' Co. site in your jurisdiction that performed.work for DOE or its predecessor agencies. This

  13. Town_Hall_Meeting_10_29_15.pdf

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

    Town Hall with Secretary Moniz Town Hall with Secretary Moniz July 18, 2013 - 3:42pm Addthis Secretary Moniz speaks at a townhall with DOE employees on the Departmental reorganization. Dan Leistikow Dan Leistikow Former Director, Office of Public Affairs In a town hall meeting with Department staff, Energy Secretary Ernest Moniz spoke about his plans for a reorganization of the Energy Department's management structure. The plans will help better achieve the Department's key priorities and those

  14. Webcast: National Energy Literacy Virtual Town Hall | Department of Energy

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

    Webcast: National Energy Literacy Virtual Town Hall Webcast: National Energy Literacy Virtual Town Hall Webcast: National Energy Literacy Virtual Town Hall On August 5, 2014, the Department of Energy (DOE) hosted a dynamic virtual conversation of ongoing efforts from across the country in utilizing the Energy Literacy Framework to address one of our nations' biggest national challenges, "Energy Illiteracy." The goal of this webinar was to share resources in energy education and provide

  15. Centre Hall, Pennsylvania: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    Hall, Pennsylvania: Energy Resources Jump to: navigation, search Equivalent URI DBpedia Coordinates 40.8475635, -77.6861093 Show Map Loading map... "minzoom":false,"mappingser...

  16. Hall County, Georgia: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    Hall County, Georgia: Energy Resources Jump to: navigation, search Equivalent URI DBpedia Coordinates 34.30778, -83.804868 Show Map Loading map... "minzoom":false,"mappingserv...

  17. Hall's Warehouse Corp Solar Project | Open Energy Information

    Open Energy Info (EERE)

    Corp. Solar Project" Retrieved from "http:en.openei.orgwindex.php?titleHall%27sWarehouseCorpSolarProject&oldid397541" Feedback Contact needs updating Image...

  18. Building America Top Innovations Hall of Fame Profile … High...

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

    ... TOP INNOVATIONS BUILDING AMERICA BUILDING AMERICA TOP INNOVATIONS HALL OF FAME PROFILE Habitat affiliates across the country held "blitz builds" to construct homes for Gulf Coast ...

  19. Missed Today's Town Hall with Sec. Chu? | Department of Energy

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

    Missed Today's Town Hall with Sec. Chu? Missed Today's Town Hall with Sec. Chu? January 26, 2011 - 4:02pm Addthis We have the video of today's online town hall event with Secretary Chu up and ready for your viewing. Check it out here. Ginny Simmons Ginny Simmons Former Managing Editor for Energy.gov, Office of Public Affairs We have the video of today's online town hall event with Secretary Chu up and ready for your viewing. Check it out here. During the event, Secretary Chu highlighted several

  20. Lecture & Dining Halls - Combustion Energy Frontier Research Center

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

    Lecture & Dining Halls Lecture & Dining Halls Lecture Halls: Friend Center SeeSchedule of Events for schedule and location of lectures. How far are the lecture halls from the dormitories? Friend Center is a quick 10 minute walk from the Butler dormitories. See campus map for walking directions. There is also a free campus shuttle that will take you from outside the Icahn Lab on Washington Road to the Friend Center. See http://www.princeton.edu/transportation/ttroutes/ for shuttle times.

  1. Robert B. Laughlin and the Fractional Quantum Hall Effect

    Office of Scientific and Technical Information (OSTI)

    In 1983, Laughlin, then at the Lawrence Livermore National Laboratory, provided the ... quantum Hall effect.'1 ' "My presence at Livermore was crucial to my work," says Laughlin. ...

  2. Rebuilding It Better: Greensburg, Kansas. City Hall (Brochure)

    Broader source: Energy.gov [DOE]

    This brochure details the energy efficient and sustainable aspects of the LEED Platinum-designated City Hall building in Greensburg, Kansas.

  3. Town Hall with Secretary Moniz | Department of Energy

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

    Secretary Moniz speaks at a townhall with DOE employees on the Departmental ... In a town hall meeting with Department staff, Energy Secretary Ernest Moniz spoke about ...

  4. Charge carrier coherence and Hall effect in organic semiconductors

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

    Yi, H. T.; Gartstein, Y. N.; Podzorov, V.

    2016-03-30

    Hall effect measurements are important for elucidating the fundamental charge transport mechanisms and intrinsic mobility in organic semiconductors. However, Hall effect studies frequently reveal an unconventional behavior that cannot be readily explained with the simple band-semiconductor Hall effect model. Here, we develop an analytical model of Hall effect in organic field-effect transistors in a regime of coexisting band and hopping carriers. The model, which is supported by the experiments, is based on a partial Hall voltage compensation effect, occurring because hopping carriers respond to the transverse Hall electric field and drift in the direction opposite to the Lorentz force actingmore » on band carriers. We show that this can lead in particular to an underdeveloped Hall effect observed in organic semiconductors with substantial off-diagonal thermal disorder. Lastly, our model captures the main features of Hall effect in a variety of organic semiconductors and provides an analytical description of Hall mobility, carrier density and carrier coherence factor.« less

  5. Robert B. Laughlin and the Fractional Quantum Hall Effect

    Office of Scientific and Technical Information (OSTI)

    Robert B. Laughlin and the Fractional Quantum Hall Effect Resources with Additional Information Robert B. Laughlin Photo Courtesy of LLNL Robert B. Laughlin shared the 1998 Nobel...

  6. Rebuilding It Better: Greensburg, Kansas. City Hall (Brochure)

    SciTech Connect (OSTI)

    Not Available

    2010-04-01

    This document showcases the LEED-Platinum designed Greensburg City Hall, which was rebuilt green, after a massive tornado destroyed Greensburg, Kansas in May 2007.

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

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

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

  8. Systems and Methods for Cylindrical Hall Thrusters with Independently...

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

    Systems and Methods for Cylindrical Hall Thrusters with Independently Controllable Ionization and Acceleration Stages Yevgeny Raitses, Nathaniel J. Fisch and Kevin D. Diamant (The...

  9. Anomalous spin precession and spin Hall effect in semiconductor...

    Office of Scientific and Technical Information (OSTI)

    SciTech Connect Search Results Journal Article: Anomalous spin precession and spin Hall effect in semiconductor quantum wells Citation Details In-Document Search Title: Anomalous ...

  10. Rebuilding It Better: Greensburg, Kansas, City Hall (Brochure)

    SciTech Connect (OSTI)

    Not Available

    2010-09-01

    This brochure details the energy efficient and sustainable aspects of the LEED Platinum-designated City Hall building in Greensburg, Kansas.

  11. Synchronization of spin-transfer torque oscillators by spin pumping, inverse spin Hall, and spin Hall effects

    SciTech Connect (OSTI)

    Elyasi, Mehrdad; Bhatia, Charanjit S.; Yang, Hyunsoo

    2015-02-14

    We have proposed a method to synchronize multiple spin-transfer torque oscillators based on spin pumping, inverse spin Hall, and spin Hall effects. The proposed oscillator system consists of a series of nano-magnets in junction with a normal metal with high spin-orbit coupling, and an accumulative feedback loop. We conduct simulations to demonstrate the effect of modulated charge currents in the normal metal due to spin pumping from each nano-magnet. We show that the interplay between the spin Hall effect and inverse spin Hall effect results in synchronization of the nano-magnets.

  12. Lees-Kubota Lecture Hall, Guggenheim 101

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

    SPECIAL SEMINAR - Monday, November 3 rd Lees-Kubota Lecture Hall, Guggenheim 101 11:15am-12:15pm "Perovskite Solar Cells: Towards New Materials and New Applications" Professor Nripan Mathews Nanyang Technological University, Singapore Abstract: Perovskite solar cells have attracted a lot of attention primarily due to its high efficiency (~19%). Much of the attention has focused on CH 3 NH 3 PbI 3 (Eg-1.55eV) whose high performance can be traced to a high absorption coefficient as well

  13. Segmented electrode hall thruster with reduced plume

    DOE Patents [OSTI]

    Fisch, Nathaniel J.; Raitses, Yevgeny

    2004-08-17

    An apparatus and method for thrusting plasma, utilizing a Hall thruster with segmented electrodes along the channel, which make the acceleration region as localized as possible. Also disclosed are methods of arranging the electrodes so as to minimize erosion and arcing. Also disclosed are methods of arranging the electrodes so as to produce a substantial reduction in plume divergence. The use of electrodes made of emissive material will reduce the radial potential drop within the channel, further decreasing the plume divergence. Also disclosed is a method of arranging and powering these electrodes so as to provide variable mode operation.

  14. Halls Middle School students get a taste of science at Y-12 ...

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

    Halls Middle School ... Halls Middle School students get a taste of science at Y-12 Posted: May 21, 2013 - 12:40pm Engineering, science and history experts give Halls Middle School...

  15. Fermilab Today

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

    ... Wilson Hall at night nature, night, building, Wilson Hall Wilson Hall is fetching at night. Photo: Elliott McCrory, AD In the News DESI, an ambitious probe of dark energy, achieves ...

  16. Undulator Hall Air Temperature Fault Scenarios

    SciTech Connect (OSTI)

    Sevilla, J.; Welch, J.; ,

    2010-11-17

    Recent experience indicates that the LCLS undulator segments must not, at any time following tuning, be allowed to change temperature by more than about {+-}2.5 C or the magnetic center will irreversibly shift outside of acceptable tolerances. This vulnerability raises a concern that under fault conditions the ambient temperature in the Undulator Hall might go outside of the safe range and potentially could require removal and retuning of all the segments. In this note we estimate changes that can be expected in the Undulator Hall air temperature for three fault scenarios: (1) System-wide power failure; (2) Heating Ventilation and Air Conditioning (HVAC) system shutdown; and (3) HVAC system temperature regulation fault. We find that for either a system-wide power failure or an HVAC system shutdown (with the technical equipment left on), the short-term temperature changes of the air would be modest due to the ability of the walls and floor to act as a heat ballast. No action would be needed to protect the undulator system in the event of a system-wide power failure. Some action to adjust the heat balance, in the case of the HVAC power failure with the equipment left on, might be desirable but is not required. On the other hand, a temperature regulation failure of the HVAC system can quickly cause large excursions in air temperature and prompt action would be required to avoid damage to the undulator system.

  17. Cylindrical Hall Thrusters with Permanent Magnets

    SciTech Connect (OSTI)

    Raitses, Yevgeny; Merino, Enrique; Fisch, Nathaniel J.

    2010-10-18

    The use of permanent magnets instead of electromagnet coils for low power Hall thrusters can offer a significant reduction of both the total electric power consumption and the thruster mass. Two permanent magnet versions of the miniaturized cylindrical Hall thruster (CHT) of different overall dimensions were operated in the power range of 50W-300 W. The discharge and plasma plume measurements revealed that the CHT thrusters with permanent magnets and electromagnet coils operate rather differently. In particular, the angular ion current density distribution from the permanent magnet thrusters has an unusual halo shape, with a majority of high energy ions flowing at large angles with respect to the thruster centerline. Differences in the magnetic field topology outside the thruster channel and in the vicinity of the channel exit are likely responsible for the differences in the plume characteristics measured for the CHTs with electromagnets and permanent magnets. It is shown that the presence of the reversing-direction or cusp-type magnetic field configuration inside the thruster channel without a strong axial magnetic field outside the thruster channel does not lead to the halo plasma plume from the CHT. __________________________________________________

  18. Pair spectrometer hodoscope for Hall D at Jefferson Lab

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

    Barbosa, Fernando J.; Hutton, Charles L.; Sitnikov, Alexandre; Somov, Alexander S.; Somov, S.; Tolstukhin, Ivan

    2015-09-21

    We present the design of the pair spectrometer hodoscope fabricated at Jefferson Lab and installed in the experimental Hall D. The hodoscope consists of thin scintillator tiles; the light from each tile is collected using wave-length shifting fibers and detected using a Hamamatsu silicon photomultiplier. Light collection was measured using relativistic electrons produced in the tagger area of the experimental Hall B.

  19. Energy spectrum, dissipation, and spatial structures in reduced Hall magnetohydrodynamic

    SciTech Connect (OSTI)

    Martin, L. N.; Dmitruk, P.; Gomez, D. O.

    2012-05-15

    We analyze the effect of the Hall term in the magnetohydrodynamic turbulence under a strong externally supported magnetic field, seeing how this changes the energy cascade, the characteristic scales of the flow, and the dynamics of global magnitudes, with particular interest in the dissipation. Numerical simulations of freely evolving three-dimensional reduced magnetohydrodynamics are performed, for different values of the Hall parameter (the ratio of the ion skin depth to the macroscopic scale of the turbulence) controlling the impact of the Hall term. The Hall effect modifies the transfer of energy across scales, slowing down the transfer of energy from the large scales up to the Hall scale (ion skin depth) and carrying faster the energy from the Hall scale to smaller scales. The final outcome is an effective shift of the dissipation scale to larger scales but also a development of smaller scales. Current sheets (fundamental structures for energy dissipation) are affected in two ways by increasing the Hall effect, with a widening but at the same time generating an internal structure within them. In the case where the Hall term is sufficiently intense, the current sheet is fully delocalized. The effect appears to reduce impulsive effects in the flow, making it less intermittent.

  20. Fractional Quantum Hall Effect at Landau Level Filling v=4/11...

    Office of Scientific and Technical Information (OSTI)

    Fractional Quantum Hall Effect at Landau Level Filling v411. Citation Details In-Document Search Title: Fractional Quantum Hall Effect at Landau Level Filling v411. Abstract...

  1. Non-abelian fractional quantum hall effect for fault-resistant...

    Office of Scientific and Technical Information (OSTI)

    Non-abelian fractional quantum hall effect for fault-resistant topological quantum computation. Citation Details In-Document Search Title: Non-abelian fractional quantum hall...

  2. WIPP Employee Inducted Into Mine Rescue Hall of Fame - WIPP Teams...

    Office of Environmental Management (EM)

    Employee Inducted Into Mine Rescue Hall of Fame - WIPP Teams Recognized at National Competition WIPP Employee Inducted Into Mine Rescue Hall of Fame - WIPP Teams Recognized at ...

  3. Anomalous Hall effect in YIG|Pt bilayers

    SciTech Connect (OSTI)

    Meyer, Sibylle Schlitz, Richard; Geprägs, Stephan; Opel, Matthias; Huebl, Hans; Goennenwein, Sebastian T. B.; Gross, Rudolf

    2015-03-30

    We measure the ordinary and the anomalous Hall effect in a set of yttrium iron garnet|platinum (YIG|Pt) bilayers via magnetization orientation dependent magnetoresistance experiments. Our data show that the presence of the ferrimagnetic insulator YIG leads to an anomalous Hall effect like voltage in Pt, which is sensitive to both Pt thickness and temperature. Interpretation of the experimental findings in terms of the spin Hall anomalous Hall effect indicates that the imaginary part of the spin mixing conductance G{sub i} plays a crucial role in YIG|Pt bilayers. In particular, our data suggest a sign change in G{sub i} between 10 K and 300 K. Additionally, we report a higher order Hall effect contribution, which appears in thin Pt films on YIG at low temperatures.

  4. Spin Hall magnetoresistance at high temperatures

    SciTech Connect (OSTI)

    Uchida, Ken-ichi; Qiu, Zhiyong; Kikkawa, Takashi; Iguchi, Ryo; Saitoh, Eiji

    2015-02-02

    The temperature dependence of spin Hall magnetoresistance (SMR) in Pt/Y{sub 3}Fe{sub 5}O{sub 12} (YIG) bilayer films has been investigated in a high temperature range from room temperature to near the Curie temperature of YIG. The experimental results show that the magnitude of the magnetoresistance ratio induced by the SMR monotonically decreases with increasing the temperature and almost disappears near the Curie temperature. We found that, near the Curie temperature, the temperature dependence of the SMR in the Pt/YIG film is steeper than that of a magnetization curve of the YIG; the critical exponent of the magnetoresistance ratio is estimated to be 0.9. This critical behavior of the SMR is attributed mainly to the temperature dependence of the spin-mixing conductance at the Pt/YIG interface.

  5. All orders results for self-crossing Wilson loops mimicking double parton scattering

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

    Dixon, Lance J.; Esterlis, Ilya

    2016-07-21

    Loop-level scattering amplitudes for massless particles have singularities in regions where tree amplitudes are perfectly smooth. For example, a 2 → 4 gluon scattering process has a singularity in which each incoming gluon splits into a pair of gluons, followed by a pair of 2 → 2 collisions between the gluon pairs. This singularity mimics double parton scattering because it occurs when the transverse momentum of a pair of outgoing gluons vanishes. The singularity is logarithmic at fixed order in perturbation theory. We exploit the duality between scattering amplitudes and polygonal Wilson loops to study six-point amplitudes in this limitmore » to high loop order in planar N = 4 super-Yang-Mills theory. The singular configuration corresponds to the limit in which a hexagonal Wilson loop develops a self-crossing. The singular terms are governed by an evolution equation, in which the hexagon mixes into a pair of boxes; the mixing back is suppressed in the planar (large N c) limit. Because the kinematic dependence of the box Wilson loops is dictated by (dual) conformal invariance, the complete kinematic dependence of the singular terms for the self-crossing hexagon on the one nonsingular variable is determined to all loop orders. The complete logarithmic dependence on the singular variable can be obtained through nine loops, up to a couple of constants, using a correspondence with the multi-Regge limit. As a byproduct, we obtain a simple formula for the leading logs to all loop orders. Furthermore, we also show that, although the MHV six-gluon amplitude is singular, remarkably, the transcendental functions entering the non-MHV amplitude are finite in the same limit, at least through four loops.« less

  6. Fermilab Today

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

    Top Links Labwide calendar Fermilab at Work Wilson Hall Cafe menu Chez Leon menu Weather ... Turbulence and stability nature, sky, cloud, weather, Wilson Hall, building Clouds covered ...

  7. Fermilab Today

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

    Top Links Labwide calendar Fermilab at Work Wilson Hall Cafe menu Chez Leon menu Weather ... Well, hello there nature, bird, animal, pigeon, Wilson Hall, closeup This pigeon recently ...

  8. IARC - Illinois Accelerator Research Center | Pilot Program ...

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

    Time Description Speakers 8-8:30 AM Registration, coffee, rolls, networking opportunity (Wilson Hall atrium) Plenary session (Wilson Hall, One West conference room) Time ...

  9. Fermilab Today

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

    Top Links Labwide calendar Fermilab at Work Wilson Hall Cafe menu Chez Leon menu Weather at Fermilab Announcements Today's New Announcements Wilson Hall Cafeteria to be open this ...

  10. Fermilab Today

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

    Top Links Labwide calendar Fermilab at Work Wilson Hall Cafe menu Chez Leon menu Weather ... Wilson Hall southwest stair work: temporary access restriction through April 4 Nominations ...

  11. Visiting Fermilab - Local Accommodations

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

    from Fermilab Wilson Hall) Telephone: 630-851-2000 Baymont Inn & Suites 1585 Naperville-Wheaton Road Naperville, Illinois (Approx. 8 miles from Fermilab Wilson Hall) Telephone: ...

  12. Fermilab Today

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

    Extended forecast Weather at Fermilab Current Flag Status Flags at full staff Wilson Hall ... Wilson Hall Cafe menu Chez Leon Wednesday, Nov. 5 Lunch - Marinated flank steak - Parmesan ...

  13. Fermilab Today

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

    Search GO spacer Top Links Labwide calendar Fermilab at Work Wilson Hall Cafe menu Chez Leon menu Weather at Fermilab Announcements Wilson Hall logo parking closed for sealcoating ...

  14. Stacking order dependence of inverse spin Hall effect and anomalous Hall effect in spin pumping experiments

    SciTech Connect (OSTI)

    Kim, Sang-Il; Seo, Min-Su; Park, Seung-Young; Kim, Dong-Jun; Park, Byong-Guk

    2015-05-07

    The dependence of the measured DC voltage on the non-magnetic material (NM) in NM/CoFeB and CoFeB/NM bilayers is studied under ferromagnetic resonance conditions in a TE{sub 011} resonant cavity. The directional change of the inverse spin Hall effect (ISHE) voltage V{sub ISHE} for the stacking order of the bilayer can separate the pure V{sub ISHE} and the anomalous Hall effect (AHE) voltage V{sub AHE} utilizing the method of addition and subtraction. The Ta and Ti NMs show a broad deviation of the spin Hall angle θ{sub ISH}, which originates from the AHE in accordance with the high resistivity of NMs. However, the Pt and Pd NMs show that the kinds of NMs with low resistivity are consistent with the previously reported θ{sub ISH} values. Therefore, the characteristics that NM should simultaneously satisfy to obtain a reasonable V{sub ISHE} value in bilayer systems are large θ{sub ISH} and low resistivity.

  15. SPECKLE INTERFEROMETRY AT MOUNT WILSON OBSERVATORY: OBSERVATIONS OBTAINED IN 2006-2007 AND 35 NEW ORBITS

    SciTech Connect (OSTI)

    Hartkopf, William I.; Mason, Brian D. E-mail: bdm@usno.navy.mil

    2009-09-15

    Results are presented for 607 speckle interferometric observations of double stars, as well as 222 measures of single stars or unresolved pairs. All data were obtained in 2006 and 2007 at the Mount Wilson Observatory, using the 2.5 m Hooker telescope. Separations range from 0.''06 to 6.''31, with a median of 0.''34. These three observing runs concentrated on binaries in need of confirmation (mainly Hipparcos and Tycho pairs), as well as systems in need of improved orbital elements. New orbital solutions have been determined for 35 systems as a result.

  16. Parametric Investigations of Miniaturized Cylindrical and Annular Hall Thrusters

    SciTech Connect (OSTI)

    A. Smirnov; Y. Raitses; N.J. Fisch

    2001-10-16

    A cylindrical geometry Hall thruster may overcome certain physical and technological limitations in scaling down of Hall thrusters to miniature sizes. The absence of the inner wall and use of the cusp magnetic field can potentially reduce heating of the thruster parts and erosion of the channel. A 2.6 cm miniaturized Hall thruster of a flexible design was built and successfully operated in the power range of 50-300 W. Comparison of preliminary results obtained for cylindrical and annular thruster configurations is presented.

  17. Notify Work Coordinators Before Working in/Entering Halls | Jefferson Lab

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

    Notify Work Coordinators Before Working in/Entering Halls Remember to Notify Work Coordinators Before Working in/Entering Hall A, B, C & D The Worker Safety Committee reminds all members of the Jefferson Lab community that they must notify the appropriate experimental hall Work Coordinator (WC) - for Hall A, B, C or D - in advance of doing any work in that hall or in advance of taking any materials or equipment into or out of that hall. Hall Work Coordinators ask to be notified by phone call

  18. Non-local order in Mott insulators, duality and Wilson loops

    SciTech Connect (OSTI)

    Rath, Steffen Patrick; Simeth, Wolfgang; Endres, Manuel; Zwerger, Wilhelm

    2013-07-15

    It is shown that the Mott insulating and superfluid phases of bosons in an optical lattice may be distinguished by a non-local parity order parameter which is directly accessible via single site resolution imaging. In one dimension, the lattice Bose model is dual to a classical interface roughening problem. We use known exact results from the latter to prove that the parity order parameter exhibits long range order in the Mott insulating phase, consistent with recent experiments by Endres et al. [M. Endres, M. Cheneau, T. Fukuhara, C. Weitenberg, P. Schau, C. Gross, L. Mazza, M.C. Bauls, L. Pollet, I. Bloch, et al., Science 334 (2011) 200]. In two spatial dimensions, the parity order parameter can be expressed in terms of an equal time Wilson loop of a non-trivial U(1) gauge theory in 2+1 dimensions which exhibits a transition between a Coulomb and a confining phase. The negative logarithm of the parity order parameter obeys a perimeter law in the Mott insulator and is enhanced by a logarithmic factor in the superfluid. -- Highlights: Number statistics of cold atoms in optical lattices show non-local correlations. These correlations are measurable via single site resolution imaging. Incompressible phases exhibit an area law in particle number fluctuations. This leads to long-range parity order of Mott-insulators in one dimension. Parity order in 2d is connected with a Wilson-loop in a lattice gauge theory.

  19. Hall County, Nebraska: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    Hide Map This article is a stub. You can help OpenEI by expanding it. Hall County is a county in Nebraska. Its FIPS County Code is 079. It is classified as ASHRAE...

  20. Building America Top Innovations Hall of Fame Profile … EEBA...

    Energy Savers [EERE]

    ... TOP INNOVATIONS BUILDING AMERICA BUILDING AMERICA TOP INNOVATIONS HALL OF FAME PROFILE The ... Drain all water away from the structure The secret to water management is to construct the ...

  1. Charge carrier coherence and Hall effect in organic semiconductors

    Office of Scientific and Technical Information (OSTI)

    OPEN: Charge carrier coherence and Hall effect in organic semiconductors H. T. Yi1, Y. N. Gartstein2 & V. Podzorov1-3 Received: 21 January 2016 Accepted: 29 February 2016 ...

  2. Property:Building/FloorAreaTheatresConcertHallsCinemas | Open...

    Open Energy Info (EERE)

    Property Edit with form History Property:BuildingFloorAreaTheatresConcertHallsCinemas Jump to: navigation, search This is a property of type Number. Floor area for Theatres,...

  3. SubTER Presentation at Town Hall- American Geophysical Union

    Broader source: Energy.gov [DOE]

    Subter, the Subsurface Crosscut at the Energy Department, conducted a Town Hall meeting to share information and create a dialogue regarding the grand challenges of energy production and storage in the subsurface.

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

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

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

  5. Hall effect measurements on InAs nanowires

    SciTech Connect (OSTI)

    Bloemers, Ch.; Grap, T.; Lepsa, M. I.; Moers, J.; Gruetzmacher, D.; Lueth, H.; Trellenkamp, St.; Schaepers, Th.

    2012-10-08

    We have processed Hall contacts on InAs nanowires grown by molecular beam epitaxy using an electron beam lithography process with an extremely high alignment accuracy. The carrier concentrations determined from the Hall effect measurements on these nanowires are lower by a factor of about 4 in comparison with those measured by the common field-effect technique. The results are used to evaluate quantitatively the charging effect of the interface and surface states.

  6. Exact solutions of the incompressible dissipative Hall magnetohydrodynamics

    SciTech Connect (OSTI)

    Xia, Zhenwei; Yang, Weihong

    2015-03-15

    By using analytical method, the exact solutions of the incompressible dissipative Hall magnetohydrodynamics (MHD) equations are derived. It is found that a phase difference may occur between the velocity and magnetic field fluctuations when the kinetic and magnetic Reynolds numbers are both very large. Since velocity and magnetic field fluctuations are both circular polarized, the phase difference makes them no longer parallel or anti-parallel like that in the incompressible ideal Hall MHD.

  7. Public invited to LANL-sponsored Energy Town Hall

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

    Day event showcases LANL energy work April 19, 2010 Public invited to LANL-sponsored Energy Town Hall April 21 at the J. Robert Oppenheimer Study Center LOS ALAMOS, New Mexico, April 19, 2010-The public is invited to learn about projects in energy conservation, generation, research, and management at an Energy Town Hall April 21. Other energy-related issues, such as server virtualization, solar energy, and Los Alamos National Laboratory's perspective on renewable energy, also will be explored in

  8. Magnetometry of micro-magnets with electrostatically defined Hall bars

    SciTech Connect (OSTI)

    Lachance-Quirion, Dany; Camirand Lemyre, Julien; Bergeron, Laurent; Sarra-Bournet, Christian; Pioro-Ladrière, Michel

    2015-11-30

    Micro-magnets are key components for quantum information processing with individual spins, enabling arbitrary rotations and addressability. In this work, characterization of sub-micrometer sized CoFe ferromagnets is performed with Hall bars electrostatically defined in a two-dimensional electron gas. Due to the ballistic nature of electron transport in the cross junction of the Hall bar, anomalies such as the quenched Hall effect appear near zero external magnetic field, thus hindering the sensitivity of the magnetometer to small magnetic fields. However, it is shown that the sensitivity of the diffusive limit can be almost completely restored at low temperatures using a large current density in the Hall bar of about 10 A/m. Overcoming the size limitation of conventional etched Hall bars with electrostatic gating enables the measurement of magnetization curves of 440 nm wide micro-magnets with a signal-to-noise ratio above 10{sup 3}. Furthermore, the inhomogeneity of the stray magnetic field created by the micro-magnets is directly measured using the gate-voltage-dependent width of the sensitive area of the Hall bar.

  9. TOMORROW: Energy Secretary Moniz to Discuss Nuclear Non-Proliferation and the Iran Deal at Wilson Center

    Broader source: Energy.gov [DOE]

    U.S. Secretary of Energy Ernest Moniz will participate in a Director’s Forum on the importance of nuclear non-proliferation and the Joint Comprehensive Plan of Action (JCPOA) at the Wilson Center in Washington, D.C.

  10. QCD Condensates and Holographic Wilson Loops for Asymptotically AdS Spaces

    SciTech Connect (OSTI)

    Quevedo, R. Carcasses; Goity, Jose L.; Trinchero, Roberto C.

    2014-02-01

    The minimization of the Nambu-Goto (NG) action for a surface whose contour defines a circular Wilson loop of radius a placed at a finite value of the coordinate orthogonal to the border is considered. This is done for asymptotically AdS spaces. The condensates of dimension n = 2, 4, 6, 8, and 10 are calculated in terms of the coefficients in the expansion in powers of the radius a of the on-shell subtracted NG action for small a->0. The subtraction employed is such that it presents no conflict with conformal invariance in the AdS case and need not introduce an additional infrared scale for the case of confining geometries. It is shown that the UV value of the gluon condensates is universal in the sense that it only depends on the first coefficients of the difference with the AdS case.

  11. Stability of Hall equilibria in neutron star crusts

    SciTech Connect (OSTI)

    Marchant, Pablo; Reisenegger, Andreas; Valdivia, Juan Alejandro; Hoyos, Jaime H.

    2014-12-01

    In the solid crusts of neutron stars, the advection of the magnetic field by the current-carrying electrons, an effect known as Hall drift, should play a very important role as the ions remain essentially fixed (as long as the solid does not break). Although Hall drift preserves the magnetic field energy, it has been argued that it may drive a turbulent cascade to scales at which ohmic dissipation becomes effective, allowing a much faster decay in objects with very strong fields. On the other hand, it has been found that there are 'Hall equilibria', i.e., field configurations that are unaffected by Hall drift. Here we address the crucial question of the stability of these equilibria through axially symmetric (two-dimensional (2D)) numerical simulations of Hall drift and ohmic diffusion, with the simplifying assumption of uniform electron density and conductivity. We demonstrate the 2D stability of a purely poloidal equilibrium, for which ohmic dissipation makes the field evolve toward an attractor state through adjacent stable configurations, around which damped oscillations occur. For this field, the decay scales with the ohmic timescale. We also study the case of an unstable equilibrium consisting of both poloidal and toroidal field components that are confined within the crust. This field evolves into a stable configuration, which undergoes damped oscillations superimposed on a slow evolution toward an attractor, just as the purely poloidal one.

  12. Optical detection of spin Hall effect in metals

    SciTech Connect (OSTI)

    Erve, O. M. J. van ‘t Hanbicki, A. T.; McCreary, K. M.; Li, C. H.; Jonker, B. T.

    2014-04-28

    Optical techniques have been widely used to probe the spin Hall effect in semiconductors. In metals, however, only electrical methods such as nonlocal spin valve transport, ferromagnetic resonance, or spin torque transfer experiments have been successful. These methods require complex processing techniques and measuring setups. We show here that the spin Hall effect can be observed in non-magnetic metals such as Pt and β-W, using a standard bench top magneto-optical Kerr system with very little sample preparation. Applying a square wave current and using Fourier analysis significantly improve our detection level. One can readily determine the angular dependence of the induced polarization on the bias current direction (very difficult to do with voltage detection), the orientation of the spin Hall induced polarization, and the sign of the spin Hall angle. This optical approach is free from the complications of various resistive effects, which can compromise voltage measurements. This opens up the study of spin Hall effect in metals to a variety of spin dynamic and spatial imaging experiments.

  13. Reconnection dynamics with secondary tearing instability in compressible Hall plasmas

    SciTech Connect (OSTI)

    Ma, Z. W. Wang, L. C.; Li, L. J.

    2015-06-15

    The dynamics of a secondary tearing instability is systematically investigated based on compressible Hall magnetohydrodynamic. It is found that in the early nonlinear phase of magnetic reconnection before onset of the secondary tearing instability, the geometry of the magnetic field in the reconnection region tends to form a Y-type structure in a weak Hall regime, instead of an X-type structure in a strong Hall regime. A new scaling law is found that the maximum reconnection rate in the early nonlinear stage is proportional to the square of the ion inertial length (γ∝d{sub i}{sup 2}) in the weak Hall regime. In the late nonlinear phase, the thin elongated current sheet associated with the Y-type geometry of the magnetic field breaks up to form a magnetic island due to a secondary tearing instability. After the onset of the secondary tearing mode, the reconnection rate is substantially boosted by the formation of the X-type geometries of magnetic field in the reconnection regions. With a strong Hall effect, the maximum reconnection rate linearly increases with the increase of the ion inertial length (γ∝d{sub i})

  14. Study of the effects of guide field on Hall reconnection

    SciTech Connect (OSTI)

    Tharp, T. D.; Yamada, M.; Ji, H.; Lawrence, E.; Dorfman, S.; Myers, C.; Yoo, J.; Huang, Y.-M.; Bhattacharjee, A.

    2013-05-15

    The results from guide field studies on the Magnetic Reconnection Experiment (MRX) are compared with results from Hall magnetohydrodynamic (HMHD) reconnection simulation with guide field. The quadrupole field, a signature of two-fluid reconnection at zero guide field, is modified by the presence of a finite guide field in a manner consistent with HMHD simulation. The modified Hall current profile contains reduced electron flows in the reconnection plane, which quantitatively explains the observed reduction of the reconnection rate. The present results are consistent with the hypothesis that the local reconnection dynamics is dominated by Hall effects in the collisionless regime of the MRX plasmas. While very good agreement is seen between experiment and simulations, we note that an important global feature of the experiments, a compression of the guide field by the reconnecting plasma, is not represented in the simulations.

  15. On the question of hysteresis in Hall magnetohydrodynamic reconnection

    SciTech Connect (OSTI)

    Sullivan, Brian P.; Bhattacharjee, A.; Huang Yimin

    2010-11-15

    Controversy has been raised regarding the cause of hysteresis, or bistability, of solutions to the equations that govern the geometry of the reconnection region in Hall magnetohydrodynamic (MHD) systems. This brief communication presents a comparison of the frameworks within which this controversy has arisen and illustrates that the Hall MHD hysteresis originally discovered numerically by Cassak et al. [Phys. Rev. Lett. 95, 235002 (2005)] is a different phenomenon from that recently reported by Zocco et al. [Phys. Plasmas 16, 110703 (2009)] on the basis of analysis and simulations in electron MHD with finite electron inertia. We demonstrate that the analytic prediction of hysteresis in EMHD does not describe or explain the hysteresis originally reported in Hall MHD, which is shown to persist even in the absence of electron inertia.

  16. Reconnection events in two-dimensional Hall magnetohydrodynamic turbulence

    SciTech Connect (OSTI)

    Donato, S.; Servidio, S.; Carbone, V. [Dipartimento di Fisica, Universita della Calabria, I-87036 Cosenza (Italy); Dmitruk, P. [Departamento de Fisica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires and Instituto de Fisica de Buenos Aires, CONICET, Buenos Aires (Argentina); Shay, M. A.; Matthaeus, W. H. [Bartol Research Institute and Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716 (United States); Cassak, P. A. [Department of Physics, West Virginia University, Morgantown, West Virginia 26506 (United States)

    2012-09-15

    The statistical study of magnetic reconnection events in two-dimensional turbulence has been performed by comparing numerical simulations of magnetohydrodynamics (MHD) and Hall magnetohydrodynamics (HMHD). The analysis reveals that the Hall term plays an important role in turbulence, in which magnetic islands simultaneously reconnect in a complex way. In particular, an increase of the Hall parameter, the ratio of ion skin depth to system size, broadens the distribution of reconnection rates relative to the MHD case. Moreover, in HMHD the local geometry of the reconnection region changes, manifesting bifurcated current sheets and quadrupolar magnetic field structures in analogy to laminar studies, leading locally to faster reconnection processes in this case of reconnection embedded in turbulence. This study supports the idea that the global rate of energy dissipation is controlled by the large scale turbulence, but suggests that the distribution of the reconnection rates within the turbulent system is sensitive to the microphysics at the reconnection sites.

  17. Admittance of multiterminal quantum Hall conductors at kilohertz frequencies

    SciTech Connect (OSTI)

    Hernndez, C.; Consejo, C.; Chaubet, C.; Degiovanni, P.

    2014-03-28

    We present an experimental study of the low frequency admittance of quantum Hall conductors in the [100?Hz, 1?MHz] frequency range. We show that the frequency dependence of the admittance of the sample strongly depends on the topology of the contacts connections. Our experimental results are well explained within the Christen and Bttiker approach for finite frequency transport in quantum Hall edge channels taking into account the influence of the coaxial cables capacitance. In the Hall bar geometry, we demonstrate that there exists a configuration in which the cable capacitance does not influence the admittance measurement of the sample. In this case, we measure the electrochemical capacitance of the sample and observe its dependence on the filling factor.

  18. Hall effect in a strong magnetic field: Direct comparisons of compressible magnetohydrodynamics and the reduced Hall magnetohydrodynamic equations

    SciTech Connect (OSTI)

    Martin, L. N.; Dmitruk, P.; Gomez, D. O.

    2010-11-15

    In this work we numerically test a model of Hall magnetohydrodynamics in the presence of a strong mean magnetic field: the reduced Hall magnetohydrodynamic model (RHMHD) derived by [Gomez et al., Phys. Plasmas 15, 102303 (2008)] with the addition of weak compressible effects. The main advantage of this model lies in the reduction of computational cost. Nevertheless, up until now the degree of agreement with the original Hall MHD system and the range of validity in a regime of turbulence were not established. In this work direct numerical simulations of three-dimensional Hall MHD turbulence in the presence of a strong mean magnetic field are compared with simulations of the weak compressible RHMHD model. The results show that the degree of agreement is very high (when the different assumptions of RHMHD, such as spectral anisotropy, are satisfied). Nevertheless, when the initial conditions are isotropic but the mean magnetic field is maintained strong, the results differ at the beginning but asymptotically reach a good agreement at relatively short times. We also found evidence that the compressibility still plays a role in the dynamics of these systems, and the weak compressible RHMHD model is able to capture these effects. In conclusion the weak compressible RHMHD model is a valid approximation of the Hall MHD turbulence in the relevant physical context.

  19. Quantum anomalous Hall effect in topological insulator memory

    SciTech Connect (OSTI)

    Jalil, Mansoor B. A.; Tan, S. G.; Siu, Z. B.

    2015-05-07

    We theoretically investigate the quantum anomalous Hall effect (QAHE) in a magnetically coupled three-dimensional-topological insulator (3D-TI) system. We apply the generalized spin-orbit coupling Hamiltonian to obtain the Hall conductivity σ{sup xy} of the system. The underlying topology of the QAHE phenomenon is then analyzed to show the quantization of σ{sup xy} and its relation to the Berry phase of the system. Finally, we analyze the feasibility of utilizing σ{sup xy} as a memory read-out in a 3D-TI based memory at finite temperatures, with comparison to known magnetically doped 3D-TIs.

  20. Nanoconstriction-based spin-Hall nano-oscillator

    SciTech Connect (OSTI)

    Demidov, V. E.; Urazhdin, S.; Zholud, A.; Sadovnikov, A. V.; Demokritov, S. O.

    2014-10-27

    We experimentally demonstrate magnetic nano-oscillators driven by pure spin current produced by the spin Hall effect in a bow tie-shaped nanoconstriction. These devices exhibit single-mode auto-oscillation and generate highly-coherent electronic microwave signals with a significant power and the spectral linewidth as low as 6.2 MHz at room temperature. The proposed simple and flexible device geometry is amenable to straightforward implementation of advanced spintronic structures such as chains of mutually coupled spin-Hall nano-oscillators.

  1. Inverse spin Hall effect in Pt/(Ga,Mn)As

    SciTech Connect (OSTI)

    Nakayama, H.; Chen, L.; Chang, H. W.; Ohno, H.; Matsukura, F.

    2015-06-01

    We investigate dc voltages under ferromagnetic resonance in a Pt/(Ga,Mn)As bilayer structure. A part of the observed dc voltage is shown to originate from the inverse spin Hall effect. The sign of the inverse spin Hall voltage is the same as that in Py/Pt bilayer structure, even though the stacking order of ferromagnetic and nonmagnetic layers is opposite to each other. The spin mixing conductance at the Pt/(Ga,Mn)As interface is determined to be of the order of 10{sup 19 }m{sup −2}, which is about ten times greater than that of (Ga,Mn)As/p-GaAs.

  2. 06.27.14 SRS Retirees Town Hall Meeting-Dave Hepner Page...

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

    Meeting-Dave Hepner Page 1 SRSRA TOWN HALL MEETING New Ellenton Community Center JUNE 27, 2014 After reviewing the notes and discussing the Town Hall Meeting held on June 27, 2014,...

  3. VEE-0067- In the Matter of M.L. Halle Oil Service, Inc.

    Broader source: Energy.gov [DOE]

    On August 9, 1999 M.L. Halle Oil Service, Inc. (Halle) of Manchester, New Hampshire, filed an Application for Exception with the Office of Hearings and Appeals (OHA) of the Department of Energy ...

  4. Quantum anomalous Hall effect in single-layer and bilayer graphene...

    Office of Scientific and Technical Information (OSTI)

    Quantum anomalous Hall effect in single-layer and bilayer graphene Citation Details In-Document Search Title: Quantum anomalous Hall effect in single-layer and bilayer graphene ...

  5. Bernhard Mecking steps down as Hall B leader at Jefferson Lab | Jefferson

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

    Lab Bernhard Mecking steps down as Hall B leader at Jefferson Lab Bernhard Mecking Jefferson Lab staff scientist Bernhard Mecking with the CEBAF Large Acceptance Spectrometer (CLAS) in Hall B. Bernhard Mecking steps down as Hall B leader at Jefferson Lab April 2, 2003 On 1 February 2003, Bernhard Mecking stepped down as leader of Hall B to return to full-time research at the Department of Energy's Thomas Jefferson National Accelerator Facility (Jefferson Lab) in Newport News, Virginia.

  6. The plant decapeptide OSIP108 prevents copper-induced toxicity in various models for Wilson disease

    SciTech Connect (OSTI)

    Spincemaille, Pieter; Pham, Duc-Hung; Chandhok, Gursimran; Verbeek, Jef; Zibert, Andree; Libbrecht, Louis; Schmidt, Hartmut; Esguerra, Camila V.; Witte, Peter A.M. de; Cammue, Bruno P.A.; Cassiman, David; Thevissen, Karin

    2014-10-15

    Background: Wilson disease (WD) is caused by accumulation of excess copper (Cu) due to a mutation in the gene encoding the liver Cu transporter ATP7B, and is characterized by acute liver failure or cirrhosis and neuronal cell death. We investigated the effect of OSIP108, a plant derived decapeptide that prevents Cu-induced apoptosis in yeast and human cells, on Cu-induced toxicity in various mammalian in vitro models relevant for WD and in a Cu-toxicity zebrafish larvae model applicable to WD. Methods: The effect of OSIP108 was evaluated on viability of various cell lines in the presence of excess Cu, on liver morphology of a Cu-treated zebrafish larvae strain that expresses a fluorescent reporter in hepatocytes, and on oxidative stress levels in wild type AB zebrafish larvae. Results: OSIP108 increased not only viability of Cu-treated CHO cells transgenically expressing ATP7B and the common WD-causing mutant ATP7B{sup H1069Q}, but also viability of Cu-treated human glioblastoma U87 cells. Aberrancies in liver morphology of Cu-treated zebrafish larvae were observed, which were further confirmed as Cu-induced hepatotoxicity by liver histology. Injections of OSIP108 into Cu-treated zebrafish larvae significantly increased the amount of larvae with normal liver morphology and decreased Cu-induced production of reactive oxygen species. Conclusions: OSIP108 prevents Cu-induced toxicity in in vitro models and in a Cu-toxicity zebrafish larvae model applicable to WD. General significance: All the above data indicate the potential of OSIP108 as a drug lead for further development as a novel WD treatment. - Highlights: • Wilson disease (WD) is characterized by accumulation of toxic copper (Cu). • OSIP108 increases viability of Cu-treated cellular models applicable to WD. • OSIP108 injections preserve liver morphology of Cu-treated zebrafish larvae. • OSIP108 injections into zebrafish larvae abrogates Cu-induced oxidative stress.

  7. Secretary Moniz's Remarks at the Wilson Center on the “2015 U.S. Energy Policy Outlook: Opportunities and Challenges”-- As Delivered

    Broader source: Energy.gov [DOE]

    Secretary Moniz's remarks, as delivered, on the “2015 U.S. Energy Policy Outlook: Opportunities and Challenges” at the Wilson Center in Washington, DC on January 7, 2015.

  8. Measurements of Plasma Potential Distribution in Segmented Electrode Hall Thruster

    SciTech Connect (OSTI)

    Y. Raitses; D. Staack; N.J. Fisch

    2001-10-16

    Use of a segmented electrode placed at the Hall thruster exit can substantially reduce the voltage potential drop in the fringing magnetic field outside the thruster channel. In this paper, we investigate the dependence of this effect on thruster operating conditions and segmented electrode configuration. A fast movable emissive probe is used to measure plasma potential in a 1 kW laboratory Hall thruster with semented electrodes made of a graphite material. Relatively small probe-induced perturbations of the thruster discharge in the vicinity of the thruster exit allow a reasonable comparison of the measured results for different thruster configurations. It is shown that the plasma potential distribution is almost not sensitive to changes of the electrode potential, but depends on the magnetic field distribution and the electrode placement.

  9. Recent Results of TMD Measurements from Jefferson Lab Hall A

    SciTech Connect (OSTI)

    Jiang, Xiaodong

    2013-10-01

    This slide-show presents results on transverse momentum distributions. The presentation covers: target single-spin asymmetry (SSA) (in parity conserving interactions); Results of JLab Hall A polarized {sup 3}He target TMD measurement; Semi-?inclusive deep-inelastic scattering channels (E06-010); Target single-spin asymmetry A{sub UT}, Collins and Sivers SSA on neutron; Double-spin asymmetry A{sub LT}, extract TMD g{sub 1T} on neutron; Inclusive channels SSA (E06-010, E05-015, E07-013) Target SSA: inclusive {sup 3}He(e,e) quasi-elastic scattering; Target SSA: inclusive {sup 3}He(e,e) deep inelastic-elastic scattering; New SIDIS experiments planned in Hall-A for JLab-12 GeV.

  10. Precise quantization of anomalous Hall effect near zero magnetic field

    SciTech Connect (OSTI)

    Bestwick, A. J.; Fox, E. J.; Kou, Xufeng; Pan, Lei; Wang, Kang L.; Goldhaber-Gordon, D.

    2015-05-04

    In this study, we report a nearly ideal quantum anomalous Hall effect in a three-dimensional topological insulator thin film with ferromagnetic doping. Near zero applied magnetic field we measure exact quantization in the Hall resistance to within a part per 10,000 and a longitudinal resistivity under 1 Ω per square, with chiral edge transport explicitly confirmed by nonlocal measurements. Deviations from this behavior are found to be caused by thermally activated carriers, as indicated by an Arrhenius law temperature dependence. Using the deviations as a thermometer, we demonstrate an unexpected magnetocaloric effect and use it to reach near-perfect quantization by cooling the sample below the dilution refrigerator base temperature in a process approximating adiabatic demagnetization refrigeration.

  11. Fractionally charged skyrmions in fractional quantum Hall effect

    SciTech Connect (OSTI)

    Balram, Ajit C.; Wurstbauer, U.; Wójs, A.; Pinczuk, A.; Jain, J. K.

    2015-11-26

    The fractional quantum Hall effect has inspired searches for exotic emergent topological particles, such as fractionally charged excitations, composite fermions, abelian and nonabelian anyons and Majorana fermions. Fractionally charged skyrmions, which support both topological charge and topological vortex-like spin structure, have also been predicted to occur in the vicinity of 1/3 filling of the lowest Landau level. The fractional skyrmions, however, are anticipated to be exceedingly fragile, suppressed by very small Zeeman energies. Here we show that, slightly away from 1/3 filling, the smallest manifestations of the fractional skyrmion exist in the excitation spectrum for a broad range of Zeeman energies, and appear in resonant inelastic light scattering experiments as well-defined resonances slightly below the long wavelength spin wave mode. The spectroscopy of these exotic bound states serves as a sensitive tool for investigating the residual interaction between composite fermions, responsible for delicate new fractional quantum Hall states in this filling factor region.

  12. Effects of Enhanced Eathode Electron Emission on Hall Thruster Operation

    SciTech Connect (OSTI)

    Y. Raitses, A. Smirnov and N. J. Fisch

    2009-04-24

    Interesting discharge phenomena are observed that have to do with the interaction between the magnetized Hall thruster plasma and the neutralizing cathode. The steadystate parameters of a highly ionized thruster discharge are strongly influenced by the electron supply from the cathode. The enhancement of the cathode electron emission above its self-sustained level affects the discharge current and leads to a dramatic reduction of the plasma divergence and a suppression of large amplitude, low frequency discharge current oscillations usually related to an ionization instability. These effects correlate strongly with the reduction of the voltage drop in the region with the fringing magnetic field between the thruster channel and the cathode. The measured changes of the plasma properties suggest that the electron emission affects the electron cross-field transport in the thruster discharge. These trends are generalized for Hall thrusters of various configurations.

  13. Contactless measurement of alternating current conductance in quantum Hall structures

    SciTech Connect (OSTI)

    Drichko, I. L.; Diakonov, A. M.; Malysh, V. A.; Smirnov, I. Yu.; Ilyinskaya, N. D.; Usikova, A. A.; Galperin, Y. M.; Kummer, M.; Känel, H. von

    2014-10-21

    We report a procedure to determine the frequency-dependent conductance of quantum Hall structures in a broad frequency domain. The procedure is based on the combination of two known probeless methods—acoustic spectroscopy and microwave spectroscopy. By using the acoustic spectroscopy, we study the low-frequency attenuation and phase shift of a surface acoustic wave in a piezoelectric crystal in the vicinity of the electron (hole) layer. The electronic contribution is resolved using its dependence on a transverse magnetic field. At high frequencies, we study the attenuation of an electromagnetic wave in a coplanar waveguide. To quantitatively calibrate these data, we use the fact that in the quantum-Hall-effect regime the conductance at the maxima of its magnetic field dependence is determined by extended states. Therefore, it should be frequency independent in a broad frequency domain. The procedure is verified by studies of a well-characterized p-SiGe/Ge/SiGe heterostructure.

  14. Intermittency in Hall-magnetohydrodynamics with a strong guide field

    SciTech Connect (OSTI)

    Rodriguez Imazio, P.; Martin, L. N.; Dmitruk, P.; Mininni, P. D.; National Center for Atmospheric Research, P.O. Box 3000, Boulder, Colorado 80307

    2013-05-15

    We present a detailed study of intermittency in the velocity and magnetic field fluctuations of compressible Hall-magnetohydrodynamic turbulence with an external guide field. To solve the equations numerically, a reduced model valid when a strong guide field is present is used. Different values for the ion skin depth are considered in the simulations. The resulting data are analyzed computing field increments in several directions perpendicular to the guide field, and building structure functions and probability density functions. In the magnetohydrodynamic limit, we recover the usual results with the magnetic field being more intermittent than the velocity field. In the presence of the Hall effect, field fluctuations at scales smaller than the ion skin depth show a substantial decrease in the level of intermittency, with close to monofractal scaling.

  15. NE-24 Gilman Hall, University of California, Certification Documentation

    Office of Legacy Management (LM)

    Gilman Hall, University of California, Certification Documentation Berkeley, California, Conditional Verlette Gatlin, MA-232 I am attaching for entry into the Public Document Room, two copies of the subject documentation. These documents are the backup data for the conditional certification that the site is radiologically acceptable for restricted use as noted in the certification statement published in the Federal Register. Inasmuch as the conditional certification is made public through the

  16. Gradient instabilities of electromagnetic waves in Hall thruster plasma

    SciTech Connect (OSTI)

    Tomilin, Dmitry

    2013-04-15

    This paper presents a linear analysis of gradient plasma instabilities in Hall thrusters. The study obtains and analyzes the dispersion equation of high-frequency electromagnetic waves based on the two-fluid model of a cold plasma. The regions of parameters corresponding to unstable high frequency modes are determined and the dependence of the increments and intrinsic frequencies on plasma parameters is obtained. The obtained results agree with those of previously published studies.

  17. Quantum Hall effect in graphene decorated with disordered multilayer patches

    SciTech Connect (OSTI)

    Nam, Youngwoo; Sun, Jie Lindvall, Niclas; Kireev, Dmitry; Yurgens, August; Jae Yang, Seung; Rae Park, Chong; Woo Park, Yung

    2013-12-02

    Quantum Hall effect (QHE) is observed in graphene grown by chemical vapour deposition using platinum catalyst. The QHE is even seen in samples which are irregularly decorated with disordered multilayer graphene patches and have very low mobility (<500 cm{sup 2}V{sup −1}s{sup −1}). The effect does not seem to depend on electronic mobility and uniformity of the resulting material, which indicates the robustness of QHE in graphene.

  18. Transition in Electron Transport in a Cylindrical Hall Thruster

    SciTech Connect (OSTI)

    J.B. Parker, Y. Raitses, and N.J. Fisch

    2010-06-02

    Through the use of high-speed camera and Langmuir probe measurements in a cylindrical Hall thruster, we report the discovery of a rotating spoke of increased plasma density and light emission which correlates with increased electron transport across the magnetic field. As cathode electron emission is increased, a sharp transition occurs where the spoke disappears and electron transport decreases. This suggests that a significant fraction of the electron current might be directed through the spoke.

  19. Jackie Chen inducted into Alameda County Women's Hall of Fame

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

    inducted into Alameda County Women's Hall of Fame - Sandia Energy Energy Search Icon Sandia Home Locations Contact Us Employee Locator Energy & Climate Secure & Sustainable Energy Future Stationary Power Energy Conversion Efficiency Solar Energy Wind Energy Water Power Supercritical CO2 Geothermal Natural Gas Safety, Security & Resilience of the Energy Infrastructure Energy Storage Nuclear Power & Engineering Grid Modernization Battery Testing Nuclear Energy Defense Waste

  20. Monday Tuesday Wednesday Thursday Friday Saturday Sunday

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    22 23 24 25 26 27 28 Day Shift 6:00 AP AP 4406A ROTUNDU 4406A ROTUNDU 4311 A Johnson 4311 A Johnson 4311 A Johnson 3 0 2 Night Shift 18:00 AP AP 4406A ROTUNDU 4406A ROTUNDU 4311 A Johnson 4311 A Johnson 4311 A Johnson 3 0 2 Feb/Mar 29 1 2 3 4 5 6 Day Shift 6:00 4464 A Hong 4464 A Hong 4464 A Hong 4464 A Hong 92A5A Abbamonte 92A5A Abbamonte 92A5A Abbamonte 4 0 3 Night Shift 18:00 4455 Gallo 4455 Gallo 4455 Gallo 4455 Gallo 92A5A Abbamonte 92A5A Abbamonte 92A5A Abbamonte 0 4 3 Mar 7 8 9 10 11 12

  1. CNMS UEC Agenda, Thursday, January 9, 2014

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

    (Imperial College, London); Megan Robertson (U. Houston); Ray Unocic (ORNLCNMS); Rafael Verduzco (Rice U.) Past Chair, ex officio member - Tony Hmelo (Vanderbilt U.) CNMS...

  2. Electricity Advisory Committee Presentations June 2016 - Thursday...

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

    Resources Praveen Kathpal, Vice President, AES Energy Storage Doug Davie, Vice President, ... KB) 3Storage Panel - Praveen Kathpal, AES Energy Storage.pdf (1.18 MB) 3Storage ...

  3. Monday Tuesday Wednesday Thursday Friday Saturday Sunday

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    May 2 3 4 5 6 7 8 8 Day Shift 6:00 MA AP BL down BL down BL down BL down BL down 0 0 Night Shift 18:00 AP AP BL down BL down BL down BL down BL down 0 0 May 9 10 11 12 13 14 15 9 Day Shift 6:00 BL down BL down BL down BL down BL down BL down BL down 0 0 Night Shift 18:00 BL down BL down BL down BL down BL down BL down BL down 0 0 May 16 17 18 19 20 21 22 10 Day Shift 6:00 AP AP BL down BL down BL down BL down BL down 0 0 Night Shift 18:00 AP AP BL down BL down BL down BL down BL down 0 0 May 23

  4. Monday Tuesday Wednesday Thursday Friday Saturday Sunday

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    3104 Nilsson 3104 Nilsson 0 5 0 May 9 10 11 12 13 14 15 20 Day Shift 6:00 3560 Andreasen 3560 Andreasen 8855 Ogasawara 8855 Ogasawara 8855 Ogasawara 3560 Andreasen 3560...

  5. Thursday, May 31, 2007 (4).pdf

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

    Agreement for Minority Financial Institutions Participation in the Bank Deposit Financial Assistance Program The Department of Energy's Bank Deposit Financial Assistance Program was developed for the purpose of strengthening and expanding the Nation's minority and women-owned small business enterprises. In.keeping with the intent of the Program and to lend support to minority and women-owned small business enterprises, the Department of Energy purchases Certificates of Deposit from those

  6. Monday Tuesday Wednesday Thursday Friday Saturday Sunday

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    8073-Ohldag 8073-Ohldag 8073-Ohldag 8073-Ohldag 6 0 0 Night Shift 18:00 AP 3993-Gray 3993-Gray 3993-Gray 3993-Gray 3993-Gray 3993-Gray 0 0 6 Jan 13 14 15 16 17 18 19 Day...

  7. Monday Tuesday Wednesday Thursday Friday Saturday Sunday

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    May 2 3 4 5 6 7 8 8 Day Shift 6:00 MA AP BL down BL down BL down BL down BL down 0 0 Night Shift 18:00 AP AP BL down BL down BL down BL down BL down 0 0 May 9 10 11 12 13 14 15 9...

  8. COLLOQUIUM: NOTE SPECIAL DATE - THURSDAY: Unique Vulnerability...

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

    This is because of the region's unique topographic, oceanographic, geologic, and demographic factors. In addition, hurricanes become more dangerous as they increase their...

  9. Magnetic shielding of a laboratory Hall thruster. II. Experiments

    SciTech Connect (OSTI)

    Hofer, Richard R. Goebel, Dan M.; Mikellides, Ioannis G.; Katz, Ira

    2014-01-28

    The physics of magnetic shielding in Hall thrusters were validated through laboratory experiments demonstrating essentially erosionless, high-performance operation. The magnetic field near the walls of a laboratory Hall thruster was modified to effectively eliminate wall erosion while maintaining the magnetic field topology away from the walls necessary to retain efficient operation. Plasma measurements at the walls validate our understanding of magnetic shielding as derived from the theory. The plasma potential was maintained very near the anode potential, the electron temperature was reduced by a factor of two to three, and the ion current density was reduced by at least a factor of two. Measurements of the carbon backsputter rate, wall geometry, and direct measurement of plasma properties at the wall indicate that the wall erosion rate was reduced by a factor of 1000 relative to the unshielded thruster. These changes effectively eliminate wall erosion as a life limitation in Hall thrusters, enabling a new class of deep-space missions that could not previously be attempted.

  10. Metal-to-insulator switching in quantum anomalous Hall states

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

    Kou, Xufeng; Pan, Lei; Wang, Jing; Fan, Yabin; Choi, Eun Sang; Lee, Wei -Li; Nie, Tianxiao; Murata, Koichi; Shao, Qiming; Zhang, Shou -Cheng; et al

    2015-10-07

    After decades of searching for the dissipationless transport in the absence of any external magnetic field, quantum anomalous Hall effect (QAHE) was recently achieved in magnetic topological insulator films. However, the universal phase diagram of QAHE and its relation with quantum Hall effect (QHE) remain to be investigated. Here, we report the experimental observation of the giant longitudinal resistance peak and zero Hall conductance plateau at the coercive field in the six quintuple-layer (Cr0.12Bi0.26Sb0.62)2Te3 film, and demonstrate the metal-to-insulator switching between two opposite QAHE plateau states up to 0.3 K. Moreover, the universal QAHE phase diagram is confirmed through themore » angle-dependent measurements. Our results address that the quantum phase transitions in both QAHE and QHE regimes are in the same universality class, yet the microscopic details are different. Additionally, the realization of the QAHE insulating state unveils new ways to explore quantum phase-related physics and applications.« less

  11. Metal-to-insulator switching in quantum anomalous Hall states

    SciTech Connect (OSTI)

    Kou, Xufeng; Pan, Lei; Wang, Jing; Fan, Yabin; Choi, Eun Sang; Lee, Wei -Li; Nie, Tianxiao; Murata, Koichi; Shao, Qiming; Zhang, Shou -Cheng; Wang, Kang L.

    2015-10-07

    After decades of searching for the dissipationless transport in the absence of any external magnetic field, quantum anomalous Hall effect (QAHE) was recently achieved in magnetic topological insulator films. However, the universal phase diagram of QAHE and its relation with quantum Hall effect (QHE) remain to be investigated. Here, we report the experimental observation of the giant longitudinal resistance peak and zero Hall conductance plateau at the coercive field in the six quintuple-layer (Cr0.12Bi0.26Sb0.62)2Te3 film, and demonstrate the metal-to-insulator switching between two opposite QAHE plateau states up to 0.3 K. Moreover, the universal QAHE phase diagram is confirmed through the angle-dependent measurements. Our results address that the quantum phase transitions in both QAHE and QHE regimes are in the same universality class, yet the microscopic details are different. Additionally, the realization of the QAHE insulating state unveils new ways to explore quantum phase-related physics and applications.

  12. D0 Collision Hall Outdoor Fresh Air Makeup

    SciTech Connect (OSTI)

    Markley, D.; /Fermilab

    1992-03-27

    This note will briefly describe the collision hall ventilation system and how D0 will monitor outside air makeup and what actions occur in the event of system failures. The Dzero collision hall has two different fresh air makeup conditions it must meet. They are: (1) Tunnel Barriers removed-Fresh air makeup = 4500 CFM; and (2) Tunnel Barriers in place-Fresh air makeup = 2800 CFM. This note demonstrates how the fresh air minimums are met and guaranteed. The air flow paths and ducts at D0 for both AHU1 and EF-7 are fixed. The blower throughputs are not variable. The software stops on AHU1's dampers will be set for a minimum of 2800 cfm or 4500 cfm of outdoor air continuously added to the HVAC flow stream depending on the tunnel barrier state. AHU1 and EF-7 both have monitoring that can determine reliably as to whether the respective blower is on or off. Since the outside air makeup is fixed as long as the blowers are running, and the software AHU1 damper limits are set, we can rely on the blower status indicators to determine as to whether the collision hall is receiving the proper amount of outside makeup air.

  13. Physics and modeling of an end-Hall (gridless) ion source

    SciTech Connect (OSTI)

    Oudini, N.; Hagelaar, G. J. M.; Boeuf, J.-P.; Garrrigues, L.

    2011-04-01

    In an end-Hall source, an ion beam is extracted from a magnetized plasma and accelerated by the plasma electric field without grids. The principle of end-Hall sources is similar to that of Hall effect thrusters (or closed-drift thrusters), but their design is optimized for processing applications (ion beam assisted deposition or substrate cleaning) rather than propulsion. The beam divergence is larger in end-Hall ion sources, and these sources can operate at low ion energies. Although end-Hall sources are commonly used in the surface processing industry, no detailed modeling of these sources is available, and their operation is quite empirical. In this paper, a self-consistent, two-dimensional, quasineutral model of an end-Hall ion source is developed and used in order to improve the understanding of the basic physics of these plasma sources and to quantify the parameters controlling the properties of the extracted ion beam.

  14. AGU SubTER Town Hall Presentation 2015 | Department of Energy

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

    AGU SubTER Town Hall Presentation 2015 AGU SubTER Town Hall Presentation 2015 AGU SubTER Townhall 2015.pdf (4.49 MB) More Documents & Publications SubTER Presentation at Town Hall - American Geophysical Union Poster on Subsurface Technology & Engineering Research, Development, and Demonstration Crosscut (SubTER) Controlling Subsurface Fractures and Fluid Flow: A Basic Research Agenda

  15. June 24, 2015 in 100E Hildebrand Hall | Center for Gas SeparationsRele...

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

    4, 2015 in 100E Hildebrand Hall Previous Next List Stephen Meckler (Lawrence Berkeley National Laboratory) Layered Zif-Polymer Composites Accessed through Metal Oxide Precursors...

  16. Report of a workshop on nuclear forces and nonproliferation Woodrow Wilson international center for scholars, Washington, DC October 28, 2010

    SciTech Connect (OSTI)

    Pilat, Joseph F

    2010-12-08

    A workshop sponsored by the Los Alamos National Laboratory in cooperation with the Woodrow Wilson International Center for Scholars was held at the Wilson Center in Washington, DC, on October 28, 2010. The workshop addressed evolving nuclear forces and their impacts on nonproliferation in the context of the new strategic environment, the Obama Administration's Nuclear Posture Review and the 2010 NPT Review Conference. The discussions reflected the importance of the NPR for defining the role of US nuclear forces in dealing with 21st century threats and providing guidance for National Nuclear Security Administration (NNSA) and Department of Defense (DoD) programs and, for many but not all participants, highlighted its role in the successful outcome of the NPT RevCon. There was widespread support for the NPR and its role in developing the foundations for a sustainable nuclear-weapon program that addresses nuclear weapons, infrastructure and expertise in the broader nonproliferation, disarmament and international security contexts. However, some participants raised concerns about its implementation and its long-term effectiveness and sustainability.

  17. Topological Hall conductivity of vortex and skyrmion spin textures

    SciTech Connect (OSTI)

    Jalil, M. B. A. Ghee Tan, Seng; Eason, Kwaku; Kong, Jian Feng

    2014-05-07

    We analyze the topological Hall conductivity experienced by conduction electrons whose spins are strongly coupled to axially symmetric spin textures, such as magnetic vortex and skyrmion of types I and II, theoretically by gauge theory, and numerically via micromagnetic simulations. The numerical results are in agreement with the theoretical predictions. Divergence between the two is seen when the vortex/skyrmion core radius is comparable or larger than the element size, and when the skyrmion configuration breaks down at high Dzyaloshinskii-Moriya interaction strength.

  18. Plasma lens and plume divergence in the Hall thruster

    SciTech Connect (OSTI)

    Fruchtman, A.; Cohen-Zur, A.

    2006-09-11

    The effect of magnetic field curvature on the plume divergence in the Hall thruster is analyzed. The two-dimensional plasma flow and electric field are determined self-consistently within the paraxial approximation in this plasma lens, a nearly axial electric field perpendicular to the curved magnetic field lines. The ion radial velocity along the thruster is described analytically. The authors suggest positioning the ionization layer near the zero of the magnetic field in a reversing-direction field configuration for a minimal beam divergence. They also show that an additional emitting electrode can reduce plume divergence.

  19. PREPRINT QUASIPARTICLE AGGREGATION I N THE FRACTIONAL QUANTUM HALL EFFECT

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

    91618 PREPRINT QUASIPARTICLE AGGREGATION I N THE FRACTIONAL QUANTUM HALL EFFECT R. B. Laughlin This paper was prepared for submittal to the Proceedings of the 17th International Conference on the Physics of Semi conductors San Francisco, California August 6-10, 1984 October 10, 1984 This is a preprint of a paper intended for publication in a journal or proceedings. Since changes may be made before publication, this preprint is made available with the un- derstanding that it will not be cited or

  20. Titanium diboride ceramic fiber composites for Hall-Heroult cells

    DOE Patents [OSTI]

    Besmann, T.M.; Lowden, R.A.

    1990-05-29

    An improved cathode structure is described for Hall-Heroult cells for the electrolytic production of aluminum metal. This cathode structure is a preform fiber base material that is infiltrated with electrically conductive titanium diboride using chemical vapor infiltration techniques. The structure exhibits good fracture toughness, and is sufficiently resistant to attack by molten aluminum. Typically, the base can be made from a mat of high purity silicon carbide fibers. Other ceramic or carbon fibers that do not degrade at temperatures below about 1000 C can be used.

  1. Titanium diboride ceramic fiber composites for Hall-Heroult cells

    DOE Patents [OSTI]

    Besmann, Theodore M.; Lowden, Richard A.

    1990-01-01

    An improved cathode structure for Hall-Heroult cells for the electrolytic production of aluminum metal. This cathode structure is a preform fiber base material that is infiltrated with electrically conductive titanium diboride using chemical vapor infiltration techniques. The structure exhibits good fracture toughness, and is sufficiently resistant to attack by molten aluminum. Typically, the base can be made from a mat of high purity silicon carbide fibers. Other ceramic or carbon fibers that do not degrade at temperatures below about 1000 deg. C can be used.

  2. Materials for Giant Spin Hall Device | Argonne National Laboratory

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

    Materials for Giant Spin Hall Device September 7, 2016 11:00AM to 12:00PM Presenter Avyaya Jayanthinarasimham, State University of New York-Albany Location Building 223, Room S105 Type Seminar Series MSD Seminar Abstract: Spin-orbit coupling in metastable β-W generates spin-orbit torques (SOTs) strong enough to flip the magnetic moment of an adjacent magnetic layer. In a magnetic tunnel junction (MTJ) stack, these torques can be used to switch between high and low resistive states. Deposition

  3. ,The Honorable Thomas Henino City Hall Plaza I

    Office of Legacy Management (LM)

    Department of Energy Washington,. DC 20585 MAR 29 1995 ,The Honorable Thomas Henino City Hall Plaza I Boston, Massachusetts 02201 '. ! Dear Mayor Menino: Even though additional involvement by DOE is,not necessary at this site, we are prepared to respond to any concerns you may have. -' : __ if you have any questions,' please feel free to call me eat 301-427li721 or Dr. W. Alexander Willlams (301-427-1719)~of my staff. ' gyp , ,~.&.Qz J ~ J / d .!~a : T- " ames W. Wagoner I -. Secretary

  4. Vortex equations governing the fractional quantum Hall effect

    SciTech Connect (OSTI)

    Medina, Luciano

    2015-09-15

    An existence theory is established for a coupled non-linear elliptic system, known as “vortex equations,” describing the fractional quantum Hall effect in 2-dimensional double-layered electron systems. Via variational methods, we prove the existence and uniqueness of multiple vortices over a doubly periodic domain and the full plane. In the doubly periodic situation, explicit sufficient and necessary conditions are obtained that relate the size of the domain and the vortex numbers. For the full plane case, existence is established for all finite-energy solutions and exponential decay estimates are proved. Quantization phenomena of the magnetic flux are found in both cases.

  5. Hall magnetohydrodynamic reconnection in the plasmoid unstable regime

    SciTech Connect (OSTI)

    Baalrud, S. D.; Bhattacharjee, A.; Huang, Y.-M.; Germaschewski, K.

    2011-09-15

    A set of reduced Hall magnetohydrodynamic (MHD) equations are used to evaluate the stability of large aspect ratio current sheets to the formation of plasmoids (secondary islands). Reconnection is driven by resistivity in this analysis, which occurs at the resistive skin depth d{sub {eta}}{identical_to}S{sub L}{sup -1/2}{radical}(L{nu}{sub A}/{gamma}), where S{sub L} is the Lundquist number, L, the length of the current sheet, {nu}{sub A,} the Alfven speed, and {gamma}, the growth rate. Modifications to a recent resistive MHD analysis [N. F. Loureiro et al., Phys. Plasmas 14, 100703 (2007)] arise when collisions are sufficiently weak that d{sub {eta}} is shorter than the ion skin depth d{sub i}{identical_to}c/{omega}{sub pi}. Secondary islands grow faster in this Hall MHD regime: the maximum growth rate scales as (d{sub i}/L){sup 6/13}S{sub L}{sup 7/13}{nu}{sub A}/L and the number of plasmoids as (d{sub i}/L){sup 1/13}S{sub L}{sup 11/26}, compared to S{sub L}{sup 1/4}{nu}{sub A}/L and S{sup 3/8}, respectively, in resistive MHD.

  6. Fractionally charged skyrmions in fractional quantum Hall effect

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

    Balram, Ajit C.; Wurstbauer, U.; Wójs, A.; Pinczuk, A.; Jain, J. K.

    2015-11-26

    The fractional quantum Hall effect has inspired searches for exotic emergent topological particles, such as fractionally charged excitations, composite fermions, abelian and nonabelian anyons and Majorana fermions. Fractionally charged skyrmions, which support both topological charge and topological vortex-like spin structure, have also been predicted to occur in the vicinity of 1/3 filling of the lowest Landau level. The fractional skyrmions, however, are anticipated to be exceedingly fragile, suppressed by very small Zeeman energies. Here we show that, slightly away from 1/3 filling, the smallest manifestations of the fractional skyrmion exist in the excitation spectrum for a broad range of Zeemanmore » energies, and appear in resonant inelastic light scattering experiments as well-defined resonances slightly below the long wavelength spin wave mode. The spectroscopy of these exotic bound states serves as a sensitive tool for investigating the residual interaction between composite fermions, responsible for delicate new fractional quantum Hall states in this filling factor region.« less

  7. Hall effect in quantum critical charge-cluster glass

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

    Bozovic, Ivan; Wu, Jie; Bollinger, Anthony T.; Sun, Yujie

    2016-04-04

    Upon doping, cuprates undergo a quantum phase transition from an insulator to a d-wave superconductor. The nature of this transition and of the insulating state is vividly debated. Here, we study the Hall effect in La2-xSrxCuO4 (LSCO) samples doped near the quantum critical point at x ≈ 0.06. Dramatic fluctuations in the Hall resistance appear below TCG ≈ 1.5 K and increase as the sample is cooled down further, signaling quantum critical behavior. We explore the doping dependence of this effect in detail, by studying a combinatorial LSCO library in which the Sr content is varied in extremely fine steps,more » Δx ≈ 0.00008. Furthermore, we observe that quantum charge fluctuations wash out when superconductivity emerges but can be restored when the latter is suppressed by applying a magnetic field, showing that the two instabilities compete for the ground state.« less

  8. Refrigeration Recovery for Experiment Hall High Target Loads

    SciTech Connect (OSTI)

    Peter Knudsen, Venkatarao Ganni, Errol Yuksek, Jonathan Creel

    2010-04-01

    The Qweak experiment at Jefferson Lab (JLab) is a 3000 W hydrogen target scheduled for the summer of 2010 and running for two years until the planned shut-down for 12GeV. The End Station Refrigerator (ESR) supports the three experiment halls, two of which may normally have a hydrogen target. The refrigerator for the ESR is a CTI/Helix 1500 W 4.5-K refrigerator nominally capable of supporting a 1250 W target load at 12 bar and 15-K (plus 1100 W of 4.5-K refrigeration). As such, this refrigerator is not capable of supporting the Qweak experiment target load in its present condition. Additionally, since the installation of an ambient air vaporizer for a single use, two week run duration of a high target load in the summer of 2003 there has been a consistent usage of the Central Helium Liquefier’s (CHL’s) 3 bar 4.5-K helium, supplied via an existing transfer-line to the ESR, for other high target loads. By the fall of 2004, it was apparent that this continued use of CHL’s supercritical helium was routinely being sought by the hall experimenters. As such, a method of refrigeration recovery was proposed to reduce the support required of CHL for these high target loads, including the anticipated Qweak experiment, while utilizing the recovered CHL refrigeration from the target to increase ESR’s 12 bar 15-K capacity.

  9. Magnetic shielding of walls from the unmagnetized ion beam in a Hall thruster

    SciTech Connect (OSTI)

    Mikellides, Ioannis G.; Katz, Ira; Hofer, Richard R.; Goebel, Dan M.

    2013-01-14

    We demonstrate by numerical simulations and experiments that the unmagnetized ion beam formed in a Hall thruster can be controlled by an applied magnetic field in a manner that reduces by 2-3 orders of magnitude deleterious ion bombardment of the containing walls. The suppression of wall erosion in Hall thrusters to such low levels has remained elusive for decades.

  10. Quantitative analytical model for magnetic reconnection in hall magnetohydrodynamics

    SciTech Connect (OSTI)

    Simakov, Andrei N

    2008-01-01

    Magnetic reconnection is of fundamental importance for laboratory and naturally occurring plasmas. Reconnection usually develops on time scales which are much shorter than those associated with classical collisional dissipation processes, and which are not fully understood. While such dissipation-independent (or 'fast') reconnection rates have been observed in particle and Hall magnetohydrodynamics (MHD) simulations and predicted analytically in electron MHD, a quantitative analytical theory of fast reconnection valid for arbitrary ion inertial lengths d{sub i} has been lacking. Here we propose such a theory without a guide field. The theory describes two-dimensional magnetic field diffusion regions, provides expressions for the reconnection rates, and derives a formal criterion for fast reconnection in terms of dissipation parameters and di. It also demonstrates that both open X-point and elongated diffusion regions allow dissipation-independent reconnection and reveals a possibility of strong dependence of the reconnection rates on d{sub i}.