Sample records for newton orange jefferson

  1. Jefferson Orange Hardin Regional Transportation Study 2007 Metropolitan Transportation Plan - 2030

    E-Print Network [OSTI]

    South East Texas Regional Planning Commission

    2007-04-12T23:59:59.000Z

    . Average 4 th Highest Daily Maximum Eight-Hour Ozone Levels Per Three Year Period SETRPC Monitoring Sites TCEQ Monitoring Sites Years Sabine Pass Mauriceville SE Tex. Reg. Airport Port Arthur Beaumont Hamshire West Orange 97-99 0.099 0... construction projects. The successor to ISTEA, the Transportation Equity Act for the 21 st Century (TEA-21) was passed by Congress in 1998. This legislation continued to promote system preservation while increasing funding of transit and other...

  2. Jefferson Lab Contract to be Awarded to Jefferson Science Associates...

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

    Jefferson Lab Contract to be Awarded to Jefferson Science Associates, LLC for Management and Operation of World-Class Office of Science Laboratory Jefferson Lab Contract to be...

  3. 2000 4 22, 23 , Newton , Newton

    E-Print Network [OSTI]

    Nakamura, Iku

    4 22, 23 Newton Newton Cambridge, Trinity college Trinity college 20 1981 11 Newton Cambridge Trinity college Good morning, Sir Sir Sir Can I help you, Sir ? Trinity college High Table 20-30cm 50cm Cambridge , 2 Cambridge Swinnerton-Dyer 1 #12;Sir, please Trinity college Wilson Newton Newton Wilson Newton

  4. Jefferson Lab Virtual Tour

    SciTech Connect (OSTI)

    None

    2013-07-13T23:59:59.000Z

    Take a virtual tour of the campus of Thomas Jefferson National Accelerator Facility. You can see inside our two accelerators, three experimental areas, accelerator component fabrication and testing areas, high-performance computing areas and laser labs.

  5. Jefferson Lab Virtual Tour

    ScienceCinema (OSTI)

    None

    2014-05-22T23:59:59.000Z

    Take a virtual tour of the campus of Thomas Jefferson National Accelerator Facility. You can see inside our two accelerators, three experimental areas, accelerator component fabrication and testing areas, high-performance computing areas and laser labs.

  6. Six NN High School Students Win Jefferson Lab Externships | Jefferson...

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

    NN High School Students Win Jefferson Lab Externships March 23, 2001 Six Newport News 11th graders have won paid, six-week externships at Jefferson Lab. The six youth were...

  7. Jefferson Lab Medical Imager Spots Breast Cancer | Jefferson...

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

    Eric Rosen, Duke University Medical Center Jefferson Lab Medical Imager Spots Breast Cancer March 3, 2005 Newport News, VA - A study published in the February issue of the...

  8. Plastic Recycling Toter -ORANGE

    E-Print Network [OSTI]

    Toronto, University of

    microfuge tubes - beakers - flasks - bottles - jars - Plastic disposable pipettes with cotton plugsPlastic Recycling Toter - ORANGE Glass Recycling Toter - TEAL Garbage Yellow sharps container Categories - All Plastic except Styrofoam - rinsed 3 times - may have contained Biohazard level 1 bacteria

  9. Safe Handling of Fresh Oranges

    E-Print Network [OSTI]

    Scott, Amanda

    2008-09-05T23:59:59.000Z

    . This will prevent juice or blood from dripping onto the oranges. Throw away oranges that touch raw meats, blood or juice. Refrigerate oranges within 2 hours of cutting or peeling them. Store them in plastic bags; in clean, airtight containers; or tightly... and utensils for raw meats and oranges, or wash and sanitize them between foods. This will prevent any patho- gens on the raw meat from being transferred to the oranges. Refrigerate leftover cut and/or peeled oranges within 2 hours. If they are left...

  10. Electroweak Physics at Jefferson

    E-Print Network [OSTI]

    McKeown, R D

    2011-01-01T23:59:59.000Z

    The Continuous Electron Beam Accelerator Facility (CEBAF) at the Thomas Jefferson National Accelerator Facility provides CW electron beams with high intensity, remarkable stability, and a high degree of polarization. These capabilities offer new and unique opportunities to search for novel particles and forces that would require extension of the standard model. CEBAF is presently undergoing an upgrade that includes doubling the energy of the electron beam to 12 GeV and enhancements to the experimental equipment. This upgraded facility will provide increased capability to address new physics beyond the standard model.

  11. Jefferson Lab Human Resources

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh SchoolIn12 InvestigationLab Group Gets 10JeffersonHuman Resources

  12. Jefferson Lab Human Resources

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh SchoolIn12 InvestigationLab Group Gets 10JeffersonHuman

  13. Jefferson Lab Human Resources

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh SchoolIn12 InvestigationLab Group Gets 10JeffersonHumanAppraisal

  14. Jefferson Lab Human Resources

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh SchoolIn12 InvestigationLab Group Gets 10JeffersonHumanAppraisalHR

  15. Jefferson Lab Search

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh SchoolIn12 InvestigationLabNew SafetyLabJefferson LabWins

  16. Jefferson Lab: Research Highlights

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh SchoolIn12electron beam charges upJeffersonFridayMarch

  17. Jefferson Lab: Student Affairs

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh SchoolIn12electron beam charges upJeffersonFridayMarchUser Liaison

  18. Nuclear Imaging | Jefferson Lab

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOnItemResearch > TheNuclear Astrophysics One of the great scientificResearch Jefferson

  19. Open House | Jefferson Lab

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Science (SC)IntegratedSpeeding access toTest and Evaluation |quasicrystals65 (9/12)Jefferson Lab

  20. Busy Week | Jefferson Lab

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office511041clothAdvanced Materials Advanced MaterialsEnergy,EnvelopeJeffersonBusinessPractices SignBusy Week

  1. 2011 - 08 | Jefferson Lab

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del(ANL-IN-03-032) -Less isNFebruary 2004August 2011 Wed, 08/31/2011 - 3:00pm Jefferson

  2. Neutron Transversity at Jefferson Lab

    SciTech Connect (OSTI)

    Jian-Ping Chen; Xiaodong Jiang; Jen-chieh Peng; Lingyan Zhu

    2005-09-07T23:59:59.000Z

    Nucleon transversity and single transverse spin asymmetries have been the recent focus of large efforts by both theorists and experimentalists. On-going and planned experiments from HERMES, COMPASS and RHIC are mostly on the proton or the deuteron. Presented here is a planned measurement of the neutron transversity and single target spin asymmetries at Jefferson Lab in Hall A using a transversely polarized {sup 3}He target. Also presented are the results and plans of other neutron transverse spin experiments at Jefferson Lab. Finally, the factorization for semi-inclusive DIS studies at Jefferson Lab is discussed.

  3. Jefferson Lab and Jefferson Science Associates Bring First School...

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

    and Jefferson Science Associates Bring First School of Physics to Sub-Saharan Africa NEWPORT NEWS, VA, July 29, 2010 - Students and scientists from African countries will have a...

  4. Jefferson Lab announces Oct. 7 Fall Science Series event | Jefferson...

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

    of North America in the 15th century, is housed in the Beinecke Rare Book and Manuscript Library at Yale University. Jefferson Lab announces Oct. 7 Fall Science Series event...

  5. Jefferson Lab Weekly Briefs March 25, 2015 | Jefferson Lab

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

    was planned for the months of March and April. Physics Jefferson Lab Published Journal Articles March 16-20 S. Pisano et al. (CLAS Collaboration). "Single and double spin...

  6. Your Role as a Jefferson Lab Fleet Vehicle Driver | Jefferson...

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

    Your Role as a Jefferson Lab Fleet Vehicle Driver Responsibility Number One - Safe Driving As a vehicle operator, it is up to you to drive safely and sensibly to avoid crashes. The...

  7. SURA Rewards Inventors | Jefferson Lab

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

    at Johns Hopkins University, helped develop three inventions during his summer internship at Jefferson Lab. A ceremony was held at 1 p.m. October 30, 1997, in the CEBAF...

  8. Thomas Jefferson: image and ideology 

    E-Print Network [OSTI]

    Wilson, Gaye N. S. B.

    2012-11-30T23:59:59.000Z

    This thesis explores the public image of Thomas Jefferson as recorded in his major life portraits. It consults the traditions that surrounded eighteenth-century portraiture and the history of the portrait as a means of ...

  9. Thomas Jefferson National Accelerator Facility

    SciTech Connect (OSTI)

    Joseph Grames, Douglas Higinbotham, Hugh Montgomery

    2010-09-01T23:59:59.000Z

    The Thomas Jefferson National Accelerator Facility (Jefferson Lab) in Newport News, Virginia, USA, is one of ten national laboratories under the aegis of the Office of Science of the U.S. Department of Energy (DOE). It is managed and operated by Jefferson Science Associates, LLC. The primary facility at Jefferson Lab is the Continuous Electron Beam Accelerator Facility (CEBAF) as shown in an aerial photograph in Figure 1. Jefferson Lab was created in 1984 as CEBAF and started operations for physics in 1995. The accelerator uses superconducting radio-frequency (srf) techniques to generate high-quality beams of electrons with high-intensity, well-controlled polarization. The technology has enabled ancillary facilities to be created. The CEBAF facility is used by an international user community of more than 1200 physicists for a program of exploration and study of nuclear, hadronic matter, the strong interaction and quantum chromodynamics. Additionally, the exceptional quality of the beams facilitates studies of the fundamental symmetries of nature, which complement those of atomic physics on the one hand and of high-energy particle physics on the other. The facility is in the midst of a project to double the energy of the facility and to enhance and expand its experimental facilities. Studies are also pursued with a Free-Electron Laser produced by an energy-recovering linear accelerator.

  10. Jefferson Lab Vehicle Fleet Do's and Don'ts | Jefferson Lab

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

    Jefferson Lab Vehicle Fleet Do's and Don'ts In addition to safe driving, Jefferson Lab Fleet vehicle drivers are responsible for the proper use, maintenance and protection of their...

  11. Orange County- Wind Permitting Standards

    Broader source: Energy.gov [DOE]

    In December 2010, the County of Orange Board of Supervisors adopted small wind performance and development standards (Ord. No. 10-020) in order to promote distributed generation systems in non...

  12. Black Bean Orange Salad Ingredients

    E-Print Network [OSTI]

    Liskiewicz, Maciej

    beans in a colander under running water to remove sodium. Allow to drain. 2. Cut the ends offBlack Bean Orange Salad Ingredients: 15 ounces black beans, canned, drained and rinsed 1/4 red

  13. Jefferson and Hamilton as viewed by historians

    E-Print Network [OSTI]

    Jungmeyer, Paul Edward

    1970-01-01T23:59:59.000Z

    JEFFERSON AND HAMILTON AS VIEHED BY HISTORIANS A Thesis Paul Edward Jungmeyer Submitted to the Graduate College of Texas A&M University in ' partial fulfillment of the requirement for the degree of MASTER OF ARTS August, 1970 Major Subject...: History JEFFERSON AND HAMILTON AS VIEWED BY HISTORIANS A Thesis by Paul Edward Jungmeyer Approved as to style and content by: (Chairman of Committee d i~) (Member) (M er) August, 1970 ABSTRACT JEFFERSON AND HAMILTON AS VIEWED BY HISTORIANS...

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

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

    DOE's Jefferson Lab Receives Approval To Start Construction of 310 Million Upgrade NEWPORT NEWS, Va., Sept. 15, 2008 - The U.S. Department of Energy's Thomas Jefferson National...

  15. Energy Department appoints new director for Jefferson accelerator...

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

    articlesenergy-department-appoints-new-director-jefferson-accelerator-newport-news-virginian-... Jefferson Lab to get new director By Gregory Richards, The Virginian-Pilot April...

  16. Thomas Jefferson High School takes regional Science Bowl competition...

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

    Science Bowl Results: Thomas Jefferson High School for Science and Technology The Thomas Jefferson High School for Science and Technology Science Bowl 2005 team includes (front...

  17. Jefferson Lab's Science Education Website Helps Students Prepare...

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

    Jefferson Lab's Science Education Website Helps Students Prepare for Upcoming Standards of Learning Tests April 12, 2004 Usage of Jefferson Lab's Science Education website is...

  18. Media Advisory - Jefferson Lab 12 GeV Upgrade Groundbreaking...

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

    for its 310 million 12 GeV Upgrade project. When: Tuesday, April 14, 2009. Where: CEBAF Center, Thomas Jefferson National Accelerator Facility, 12000 Jefferson Avenue,...

  19. Thomas Jefferson High School for Science & Technology National...

    Energy Savers [EERE]

    Thomas Jefferson High School for Science & Technology National Science Bowl Champion Thomas Jefferson High School for Science & Technology National Science Bowl Champion May 2,...

  20. JLab Awarded Vice President's Hammer Award | Jefferson Lab

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

    Awarded Vice President's Hammer Award The Directives Review Team at the Thomas Jefferson National Accelerator Facility (Jefferson Lab) has been awarded the Vice President's Hammer...

  1. MOU signed between CIAE and Jefferson National Lab, USA. (China...

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

    https:www.jlab.orgnewsarticlesmou-signed-between-ciae-and-jefferson-national-lab-usa-china-nuclear-industry-news-ge... MOU signed between CIAE and Jefferson National Lab, USA....

  2. New Laser's "First Light" Shatters Record | Jefferson...

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

    Jefferson National Accelerator Facility have delivered first light from their Free Electron Laser (FEL). Only 2 years after ground was broken for the FEL, infrared light of more...

  3. The DVCS program at Jefferson Lab

    SciTech Connect (OSTI)

    Niccolai, Silvia [Institut de Physique Nucleaire, Orsay, France

    2014-06-01T23:59:59.000Z

    Recent promising results, obtained at Jefferson Lab, on cross sections and asymmetries for DVCS and their link to the Generalized Parton Distributions are the focus of this paper. The extensive experimental program to measure DVCS with the 12-GeV-upgraded CEBAF in three experimental Halls (A, B, C) of Jefferson Lab, will also be presented.

  4. Jefferson Lab Hosts Science Poster Session | Jefferson Lab

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh SchoolIn12 InvestigationLab Group Gets 10 MillionJefferson45July

  5. Jefferson Lab Scientist Wins 2011 Lawrence Award | Jefferson Lab

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh SchoolIn12 InvestigationLabNew SafetyLabJefferson LabWins

  6. Jefferson Lab Weekly Briefs - July 15, 2015 | Jefferson Lab

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh SchoolIn12 InvestigationLabNewLabLab ToTravel|Jefferson

  7. Jefferson Lab, ODU team up for center | Jefferson Lab

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh SchoolIn12electron beam charges upJeffersonFridayMarch 6|Lab, ODU team

  8. Independent Oversight Inspection, Thomas Jefferson National Accelerator Facility- August 2008

    Broader source: Energy.gov [DOE]

    Inspection of Environment, Safety and Health Programs at the Thomas Jefferson National Accelerator Facility

  9. Electroweak Physics at Jefferson Lab

    SciTech Connect (OSTI)

    R. D. McKeown

    2012-03-01T23:59:59.000Z

    The Continuous Electron Beam Accelerator Facility (CEBAF) at the Thomas Jefferson National Accelerator Facility provides CW electron beams with high intensity, remarkable stability, and a high degree of polarization. These capabilities offer new and unique opportunities to search for novel particles and forces that would require extension of the standard model. CEBAF is presently undergoing an upgrade that includes doubling the energy of the electron beam to 12 GeV and enhancements to the experimental equipment. This upgraded facility will provide increased capability to address new physics beyond the standard model.

  10. Electroweak Physics at Jefferson Lab

    E-Print Network [OSTI]

    R. D. McKeown

    2011-09-23T23:59:59.000Z

    The Continuous Electron Beam Accelerator Facility (CEBAF) at the Thomas Jefferson National Accelerator Facility provides CW electron beams with high intensity, remarkable stability, and a high degree of polarization. These capabilities offer new and unique opportunities to search for novel particles and forces that would require extension of the standard model. CEBAF is presently undergoing an upgrade that includes doubling the energy of the electron beam to 12 GeV and enhancements to the experimental equipment. This upgraded facility will provide increased capability to address new physics beyond the standard model.

  11. JeffersonSTM09.ppt

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh SchoolIn12electron beam charges upJeffersonFridayMarchUser LiaisonAOS:

  12. Jefferson Offshore | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to: navigation, searchOf Kilauea Volcano, Hawaii | Wind FarmJefferson City, Missouri:Offshore

  13. Jefferson Utilities | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnual SiteofEvaluatingGroup | OpenHunanInformationJames Watkins Jump to:JapanJatrophaJefferson

  14. At A Glance | Jefferson Lab

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625govInstrumentstdmadapInactiveVisiting the TWP TWPAlumni AlumniFederalAshley BoyleAn overhead view of Jefferson Lab.

  15. Jefferson Lab announces Fall 2002 Science Series line-up | Jefferson...

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

    Italypeoplepeoplekevin.html http:www.planetary.orghtmlnewsItaly http:geophysics.ou.eduahern All Science Series events begin at 7 p.m. in Jefferson Lab's CEBAF...

  16. Shoreline assessment of Jefferson County, Texas 

    E-Print Network [OSTI]

    Lee, Hoo Il

    2004-09-30T23:59:59.000Z

    Shoreline erosion is an issue of economic and environmental concern on the Texas coast. Texas State Highway 87, located in Jefferson County, Texas, has been repeatedly destroyed by storms and rebuilt in the past 50 years. ...

  17. Jefferson Lab's Trim Card II

    SciTech Connect (OSTI)

    Trent Allison; Sarin Philip; C. Higgins; Edward Martin; William Merz

    2005-05-01T23:59:59.000Z

    Jefferson Lab's Continuous Electron Beam Accelerator Facility (CEBAF) uses Trim Card I power supplies to drive approximately 1900 correction magnets. These trim cards have had a long and illustrious service record. However, some of the employed technology is now obsolete, making it difficult to maintain the system and retain adequate spares. The Trim Card II is being developed to act as a transparent replacement for its aging predecessor. A modular approach has been taken in its development to facilitate the substitution of sections for future improvements and maintenance. The resulting design has been divided into a motherboard and 7 daughter cards which has also allowed for parallel development. The Trim Card II utilizes modern technologies such as a Field Programmable Gate Array (FPGA) and a microprocessor to embed trim card controls and diagnostics. These reprogrammable devices also provide the versatility to incorporate future requirements.

  18. Jefferson Lab hosts 22 teams for Virginia High School Science...

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

    of the Jefferson Lab Science Bowl logo. Jefferson Lab hosts 22 teams for Virginia High School Science Bowl on Feb. 12 February 1, 2005 Some of the brightest young minds in the...

  19. Media Advisory: Jefferson Lab Signs Partnership Agreement With...

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

    Date: Monday, Nov. 26, 2012 Time: The signing will take place at 2:30 p.m. Place: CEBAF Center at Jefferson Lab, 12000 Jefferson Avenue, Newport News, VA 23606 Event:...

  20. Feb. 9 Event at Jefferson Lab Features Chemistry Demonstrations...

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

    Feb. 9 Event at Jefferson Lab Features Chemistry Demonstrations Set to Pop Music NEWPORT NEWS, Va., Feb. 2, 2010 - Jefferson Lab's Feb. 9 Science Series event will feature members...

  1. JLab Posts OSHA Form 300 for 2014 | Jefferson Lab

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

    about environment, safety and health programs at Jefferson Lab, please visit the ESH&Q Division webpage: http:www.jlab.orgehs Click on the following for Jefferson Lab's...

  2. 2012 Annual Planning Summary for Thomas Jefferson Site Office

    Broader source: Energy.gov [DOE]

    The ongoing and projected Environmental Assessments and Environmental Impact Statements for 2012 and 2013 within Thomas Jefferson Site Office.

  3. Recent results in DIS from Jefferson Lab

    SciTech Connect (OSTI)

    David Gaskell

    2010-04-01T23:59:59.000Z

    Recent results in Deep Inelastic processes measured at Jefferson Lab are presented. In addition to the inclusive reactions typically discussed in the context of Deep Inelastic (electron) Scattering, particular emphasis is given to Deep Exclusive and semi#19;inclusive reactions. Jefferson Lab has made significant contributions to the understanding of the partonic structure of the nucleon at large x, and with its first dedicated measurements is already providing important contributions to understanding the three-dimensional structure of the nucleon via constraints on Generalized Parton Distributions (GPDs) and Transverse Momentum Distributions (TMDs).

  4. The Newton Wonder in Mechanics

    E-Print Network [OSTI]

    Donald Lynden-Bell

    2000-07-11T23:59:59.000Z

    Application of Newton's ideas from "Principia" gives many new results in mechanics. Here we explore the question ``What form of extra force will maintain the magnitude of a vector constant of the motion while changing its direction?''

  5. Jefferson Lab News - JLab FEL Wins R&D 100 Award | Jefferson...

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

    award. The 2005 award goes to: The Tunable Energy Recovered High Power Infrared Free-Electron Laser, lead by a team of nine Jefferson Lab scientists and engineers. The...

  6. Baryon spectroscopy with CLAS at Jefferson Lab

    SciTech Connect (OSTI)

    Eugene Pasyuk, CLAS Collaboration

    2012-04-01T23:59:59.000Z

    A substantial part of the experimental efforts at the experimental Hall-B of Jefferson Laboratory is dedicated to this studies of light baryon spectroscopy. In this report a general overview of the experimental capabilities in the Experimental Hall-B will be presented together with preliminary results of recent double polarization measurements and finally overall status of the program.

  7. Visiting senior scientist at Jefferson Lab leads the way on cavity...

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

    Jacek Sekutowicz, visiting senior staff scientist at Jefferson Lab's Institute for Superconducting Radiofrequency Science and Technology Visiting senior scientist at Jefferson Lab...

  8. Integrazione numerica: formule di Newton-Cotes semplici Formule di Newton-Cotes composte

    E-Print Network [OSTI]

    Demeio, Lucio

    Integrazione numerica: formule di Newton-Cotes semplici Formule di Newton-Cotes composte Metodo di-Cotes composte Metodo di Romberg 1 Integrazione numerica: formule di Newton-Cotes semplici 2 Formule di Newton-Cotes composte 3 Metodo di Romberg Lucio Demeio Dipartimento di Scienze Matematiche Analisi Numerica #12

  9. Maintenance & Cleaning Firm Earns Jefferson Lab's Small Business...

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

    Maintenance & Cleaning Firm Earns Jefferson Lab's Small Business Award for 2013 Prestige award Prestige Maintenance staff (left to right) Sandra Coltrain, Operations Managers John...

  10. Jefferson Lab technology, capabilities take center stage in constructi...

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

    semi for its road test. Jefferson Lab technology, capabilities take center stage in construction of portion of DOE's Spallation Neutron Source accelerator By James Schultz January...

  11. Governor to Join Jefferson Lab in Celebrating Completion of Accelerato...

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

    Governor to Join Jefferson Lab in Celebrating Completion of Accelerator Upgrade Construction CEBAF Race Track This aerial photo shows the outline of the racetrack-shaped CEBAF...

  12. Thomas Jefferson High School for Science & Technology wins...

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

    Science Bowl. Winning the daylong academic competition was the Thomas Jefferson High School for Science and Technology, from Alexandria, Va. Following in second place was the...

  13. Thomas Jefferson High School for Science & Technology Takes 2015...

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

    Takes 2015 Virginia Science Bowl 2014 Virginia High School Science Bowl The team from Thomas Jefferson High School for Science and Technology, Alexandria, swept through the...

  14. Thomas Jefferson High School for Science and Technology from...

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

    of science and math questions and answers, the winning team was Thomas Jefferson High School for Science and Technology from Alexandria. Team captain and high school senior,...

  15. The Future of Mr. Jefferson's Laboratory (nee CEBAF)

    E-Print Network [OSTI]

    Carl E. Carlson

    1997-01-27T23:59:59.000Z

    We present one viewpoint plus some general information on the plans for energy upgrades and physics research at the Jefferson Laboratory.

  16. Jefferson Lab announces two Fall Science Series events -- featuring...

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

    conduct "Einstein and Beyond - The Magic Show" on Tuesday, Oct. 25 at the Jefferson Lab CEBAF Center auditorium. The magic show will concentrate on Newtonian mechanics, relativity,...

  17. Jefferson Lab's Free-Electron Laser explores promise of carbon...

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

    the collaboration's FEL experiment (image not actual size). Jefferson Lab's Free-Electron Laser explores promise of carbon nanotubes By James Schultz January 27, 2003...

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

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

    designs for two experiments planned to run in the upgraded Continuous Electron Beam Accelerator Facility at Jefferson Lab. The Thesis Prize was established in 1999 by the...

  19. Jefferson Lab Tech Associate Invents Lockout Device for Equipment...

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

    Tech Associate Invents Lockout Device for Equipment with Removable Power Cords April 22, 2002 It was the early 1990s and building Jefferson Lab's Continuous Electron Beam...

  20. Supercomputing on a Shoestring: Cluster Computers at JLab | Jefferson...

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

    people behind these technological wonders are the members of Jefferson Lab's High Performance Computing Group, led by Chip Watson. So what is high performance computing? "It's...

  1. 'Comic Book Physics' examined at Jefferson Lab's March 25 Science...

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

    examined at Jefferson Lab's March 25 Science Series event February 26, 2003 The wild, wacky world of 'Comic Book Physics' will be investigated by guest speaker Jim...

  2. Jefferson Lab adds three popular presentations to Fall Science...

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

    http:universe.gsfc.nasa.govpeople.html Then after a late October engagement in London, internationally known physicist and Jefferson Lab's Interim Deputy for Science Frank...

  3. Jefferson Lab seeks applicants for summer, science teacher enrichment...

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

    seeks applicants for summer, science teacher enrichment program February 26, 2003 Calling all middle school teachers who instruct science classes. Jefferson Lab would like to help...

  4. News Media invited to interview Jefferson Lab summer science...

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

    JLab Media Advisory: News Media invited to interview Jefferson Lab summer science enrichment program participants; cover closing Poster Session July 29, 2005 News Media...

  5. News Media invited to interview Jefferson Lab summer science...

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

    News Media invited to interview Jefferson Lab summer science enrichment program participants; cover closing Poster Session August 1, 2007 News Media representatives are invited to...

  6. Media Advisory - Jefferson Lab Hosts Summer Intern Science Poster...

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

    high school and college interns that participated in Jefferson Lab's summer science enrichment programs will share their summer experiences and projects during a Poster Session....

  7. Jefferson Lab welcomes students, teachers for summer internship...

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

    Poster Session Jefferson Lab welcomes students, teachers for summer internship, enrichment program July 28, 2004 Newport News, VA. - As schools close for the summer, the...

  8. Jefferson Lab Seeks Applicants for Science Teacher Enrichment...

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

    Seeks Applicants for Science Teacher Enrichment Program March 14, 2001 Calling all middle school teachers who instruct science classes. Jefferson Lab would like to help you refresh...

  9. Optical Calibration For Jefferson Lab HKS Spectrometer

    E-Print Network [OSTI]

    L. Yuan; L. Tang

    2005-11-04T23:59:59.000Z

    In order to accept very forward angle scattering particles, Jefferson Lab HKS experiment uses an on-target zero degree dipole magnet. The usual spectrometer optics calibration procedure has to be modified due to this on-target field. This paper describes a new method to calibrate HKS spectrometer system. The simulation of the calibration procedure shows the required resolution can be achieved from initially inaccurate optical description.

  10. Overview of Nuclear Physics at Jefferson Lab

    SciTech Connect (OSTI)

    McKeown, Robert D. [JLAB

    2013-08-01T23:59:59.000Z

    The Continuous Electron Beam Accelerator Facility (CEBAF) and associated experimental equipment at Jefferson Lab comprise a unique facility for experimental nuclear physics. This facility is presently being upgraded, which will enable a new experimental program with substantial discovery potential to address important topics in nuclear, hadronic, and electroweak physics. Further in the future, it is envisioned that the Laboratory will evolve into an electron-ion colliding beam facility.

  11. Jefferson Lab Science, Past and Future

    E-Print Network [OSTI]

    R. D. McKeown

    2014-12-03T23:59:59.000Z

    The Continuous Electron Beam Accelerator Facility (CEBAF) and associated experimental equipment at Jefferson Lab comprise a unique facility for experimental nuclear physics. This facility is presently being upgraded, which will enable a new experimental program with substantial discovery potential to address important topics in nuclear, hadronic, and electroweak physics. Further in the future, it is envisioned that the Laboratory will evolve into an electron-ion colliding beam facility.

  12. Jefferson Lab Science, Past and Future

    E-Print Network [OSTI]

    McKeown, R D

    2014-01-01T23:59:59.000Z

    The Continuous Electron Beam Accelerator Facility (CEBAF) and associated experimental equipment at Jefferson Lab comprise a unique facility for experimental nuclear physics. This facility is presently being upgraded, which will enable a new experimental program with substantial discovery potential to address important topics in nuclear, hadronic, and electroweak physics. Further in the future, it is envisioned that the Laboratory will evolve into an electron-ion colliding beam facility.

  13. Overview of Nuclear Physics at Jefferson Lab

    E-Print Network [OSTI]

    R. D. McKeown

    2013-03-26T23:59:59.000Z

    The Continuous Electron Beam Accelerator Facility (CEBAF) and associated experimental equipment at Jefferson Lab comprise a unique facility for experimental nuclear physics. This facility is presently being upgraded, which will enable a new experimental program with substantial discovery potential to address important topics in nuclear, hadronic, and electroweak physics. Further in the future, it is envisioned that the Laboratory will evolve into an electron-ion colliding beam facility.

  14. Overview of Nuclear Physics at Jefferson Lab

    E-Print Network [OSTI]

    McKeown, R D

    2013-01-01T23:59:59.000Z

    The Continuous Electron Beam Accelerator Facility (CEBAF) and associated experimental equipment at Jefferson Lab comprise a unique facility for experimental nuclear physics. This facility is presently being upgraded, which will enable a new experimental program with substantial discovery potential to address important topics in nuclear, hadronic, and electroweak physics. Further in the future, it is envisioned that the Laboratory will evolve into an electron-ion colliding beam facility.

  15. Isaac Newton Institute for Mathematical Sciences

    E-Print Network [OSTI]

    ://www.newton.ac.uk The Isaac Newton Institute is a national facility based in Cambridge, UK, and attracts scientists from all are listed at www.newton.ac.uk/programmes. Administrative support is provided for housing, library, computing any area where innovative mathematics plays a significant role. Contact John Toland, Director email

  16. Jefferson Lab | Exploring the Nature of Matter

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Science (SC)Integrated Codes |Is Your Home as Ready for Summer asJacob17JeffStaffJefferson Lab

  17. Jefferson Lab | Exploring the Nature of Matter

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Science (SC)Integrated Codes |Is Your Home as Ready for Summer asJacob17JeffStaffJefferson

  18. Jefferson Lab | Exploring the Nature of Matter

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Science (SC)Integrated Codes |Is Your Home as Ready for Summer asJacob17JeffStaffJeffersonThu,

  19. Jefferson, Iowa: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are8COaBulkTransmissionSitingProcess.pdfGetecGtelInterias SolarJaneJefferson, Iowa: Energy Resources Jump to:

  20. Jefferson, Virginia: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are8COaBulkTransmissionSitingProcess.pdfGetecGtelInterias SolarJaneJefferson, Iowa: Energy Resources Jump

  1. Jefferson, Wisconsin: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are8COaBulkTransmissionSitingProcess.pdfGetecGtelInterias SolarJaneJefferson, Iowa: Energy Resources JumpWisconsin:

  2. Jefferson, Iowa: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to: navigation, searchOf Kilauea Volcano, Hawaii | Wind FarmJefferson City,

  3. Coercive polynomials and their Newton polytopes

    E-Print Network [OSTI]

    Tomas Bajbar

    2014-08-02T23:59:59.000Z

    Aug 2, 2014 ... Keywords: Newton polytope, coercivity, polynomial optimization, non-compact semi-algebraic sets. Category 1: Global Optimization (Theory ).

  4. Thomas Jefferson High School for Science & Technology Snaps Up...

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

    Up Virginia Science Bowl Championship; Virginia Beach Schools Take 2nd, 3rd Place High School Science Bowl 1st Place The Thomas Jefferson High School for Science and Technology...

  5. Jefferson Lab hosts 23 teams for Virginia High School Science...

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

    High School Science Bowl on Feb. 11 February 3, 2006 Some of the brightest young minds in the Commonwealth will meet at the Department of Energy's Jefferson Lab on Saturday, Feb....

  6. Thomas Jefferson High School for Science & Technology wins...

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

    Bowl February 15, 2006 TJHSST Finishing in first place at the Virginia Regional High School Science Bowl was the team from the Thomas Jefferson High School for Science and...

  7. Jefferson Lab's Science Education Website Helps Students Prepare...

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

    is the "Who Wants to Win 1,000,000 Math and Science Quiz Jefferson Lab's Science Education Website Helps Students Prepare for Upcoming Standards of Learning Tests April 7,...

  8. Legendary Tuskegee Airmen to Speak at Jefferson Lab's Black History...

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

    Lab's Black History Month Event February 3, 2004 Three members of the legendary, World War II era Tuskegee Airmen will speak at Jefferson Lab's Black History Month celebration at...

  9. News Media Invited to Teachers' Science Activities Night at Jefferson...

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

    Region II Teacher Night When: Wednesday, April 21, 2010, from 6:30 to 8 p.m. Where: CEBAF Center at the Thomas Jefferson National Accelerator Facility, located at 12000...

  10. Jefferson Lab's Spring Science Series kicks off with Feb. 13...

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

    Feb. 13 event February 9, 2001 Jefferson Lab's Spring Science Series kicks off in the CEBAF Center auditorium at 7 p.m., Tuesday, Feb. 13. Dog trainer Marilyn Sanders will...

  11. Jefferson Lab announces two Fall Science Series lectures; examine...

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

    the topics of Jefferson Lab's Fall Science Series. The first presentation, "When Stars Attack" is Oct. 17 and features Dr. Brian Fields from the University of Illinois. He will...

  12. Tunable Laser Reaches Record Power Level | Jefferson Lab

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

    (Jefferson Lab) have produced record setting levels of laser power from their Free Electron Laser (FEL). Last summer when the FEL was first turned on, it produced 155 watts of...

  13. Jefferson Lab imager can detect beginnings of breast tumors ...

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

    "This is going to be a very useful device," said Majewski, leader of Jefferson Lab's Radiation Detector and Medical Imaging Group. A round of what's called pre-clinical test...

  14. Three Young Scientists Earn DOE Graduate Research Grants at Jefferson...

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

    at Jefferson Lab are: Jason Bane, University of Tennessee, with his project: The EMC Effect in Three-body Systems. His advisors are Nadia Fomin, University of Tenn., and...

  15. Jefferson Lab begins 2003 Spring Science Series with popular...

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

    Hidden Worlds: Hunting for Quarks in Ordinary Matter, by Timothy Paul Smith Timothy P. Smith will be available at Jefferson Lab to sign copies of his new book, "Hidden Worlds:...

  16. Microsoft Word - REPORT Jefferson Lab Economic Impact FY2010...

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

    expanding Jefferson Lab's capabilities has and will continue to create an additional economic impact for the ... * United States in the amount of 760.6 million in economic output...

  17. Jefferson Lab Website Offers Preparation Help For Virginia Standards...

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

    Standards of Learning Science, Math and Technology Practice Tests and our 'Who Wants to Win 1,000,000 Math and Science Quiz,'" says Steve Gagnon, Jefferson Lab Science Education...

  18. Thomas Jefferson High School for Science & Technology Wins...

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

    beat out St. Christopher's School from Richmond, 54-44, in the final round today to win the Virginia Regional High School Science Bowl held at Jefferson Lab. St. Christopher's...

  19. Jefferson Lab Website Offers Help For Virginia Standards of Learning...

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

    Standards of Learning Science, Math and Technology Practice Tests and our 'Who Wants to Win 1,000,000 Math and Science Quiz,'" says Steve Gagnon, Jefferson Lab Science Education...

  20. Updated 1-12 Linda A. Newton

    E-Print Network [OSTI]

    within the Department of the Navy, the US Pacific Command and the US Pacific Fleet. Ms. Newton of civilian service with the Department of the Navy. Ms. Newton began her federal career in 1983 included details in the NAVSEA operations and shipbuilding budget offices, the Navy Comptroller's Office

  1. Rethinking Newton's Principia Simon Saunders1

    E-Print Network [OSTI]

    Saunders, Simon

    That is not the strategy taken here. My objective is to give a consistent reading of Newton's Principia ­ discarding of mass of the solar system), wrongly identi...ed by Newton as inertial, is exemplary: it is a local total energy and angular momentum zero can be de...ned. No such constraint ­ and no such prediction

  2. The Jefferson lab FEL driver ERLs

    SciTech Connect (OSTI)

    Douglas, David R. [JLAB; Tennant, Christopher D. [JLAB

    2013-11-01T23:59:59.000Z

    Jefferson Lab has - for over a decade - been operating high power IR and UV FELs using CW energy recovering linacs based on DC photocathode electron sources and CEBAF SRF technology. These machines have unique combinations of beam quality, power, and operational flexibility, and thus offer significant opportunity for experiments that use low and medium energy (several tens - few hundreds of MeV) electron beams. We will describe the systems and detail their present and near-term (potential) performance. Recent internal-target analysis and validation testing will be discussed, and schemes for single- and two-pass fixed target operation described. An introduction to subsequent discussions of beam quality and upgrade paths to polarized operation/higher energy will be given.

  3. The Jefferson lab FEL driver ERLs

    SciTech Connect (OSTI)

    Douglas, David R.; Tennant, Christopher D. [Jefferson Lab, Newport News, VA 23606 (United States)

    2013-11-07T23:59:59.000Z

    Jefferson Lab has - for over a decade - been operating high power IR and UV FELs using CW energy recovering linacs based on DC photocathode electron sources and CEBAF SRF technology. These machines have unique combinations of beam quality, power, and operational flexibility, and thus offer significant opportunity for experiments that use low and medium energy (several tens - few hundreds of MeV) electron beams. We will describe the systems and detail their present and near-term (potential) performance. Recent internal-target analysis and validation testing will be discussed, and schemes for single- and two-pass fixed target operation described. An introduction to subsequent discussions of beam quality and upgrade paths to polarized operation/higher energy will be given.

  4. JEFFERSON LAB 12 GEV CEBAF UPGRADE

    SciTech Connect (OSTI)

    Rode, C. H. [Thomas Jefferson National Accelerator Facility, Newport News, Virginia, 23606 (United States)

    2010-04-09T23:59:59.000Z

    The existing continuous electron beam accelerator facility (CEBAF) at Thomas Jefferson National Accelerator Facility (TJNAF) is a 5-pass, recirculating cw electron Linac operating at approx6 GeV and is devoted to basic research in nuclear physics. The 12 GeV CEBAF Upgrade is a $310 M project, sponsored by the Department of Energy (DOE) Office of Nuclear Physics, that will expand its research capabilities substantially by doubling the maximum energy and adding major new experimental apparatus. The project received construction approval in September 2008 and has started the major procurement process. The cryogenic aspects of the 12 GeV CEBAF Upgrade includes: doubling the accelerating voltages of the Linacs by adding ten new high-performance, superconducting radiofrequency (SRF) cryomodules (CMs) to the existing 42 1/4 cryomodules; doubling of the 2 K cryogenics plant; and the addition of eight superconducting magnets.

  5. The Jefferson Lab Frozen Spin Target

    SciTech Connect (OSTI)

    Christopher Keith, James Brock, Christopher Carlin, Sara Comer, David Kashy, Josephine McAndrew, David Meekins, Eugene Pasyuk, Joshua Pierce, Mikell Seely

    2012-08-01T23:59:59.000Z

    A frozen spin polarized target, constructed at Jefferson Lab for use inside a large acceptance spectrometer, is described. The target has been utilized for photoproduction measurements with polarized tagged photons of both longitudinal and circular polarization. Protons in TEMPO-doped butanol were dynamically polarized to approximately 90% outside the spectrometer at 5 T and 200-300 mK. Photoproduction data were acquired with the target inside the spectrometer at a frozen-spin temperature of approximately 30 mK with the polarization maintained by a thin, superconducting coil installed inside the target cryostat. A 0.56 T solenoid was used for longitudinal target polarization and a 0.50 T dipole for transverse polarization. Spin relaxation times as high as 4000 hours were observed. We also report polarization results for deuterated propanediol doped with the trityl radical OX063.

  6. Neutron Structure — New Results with CLAS at Jefferson Lab

    SciTech Connect (OSTI)

    Sebastian Kuhn

    2006-11-01T23:59:59.000Z

    New measurements using the 6 GeV continuous electron beam and the CEBAF Large Acceptance Spectrometer (CLAS) at Jefferson Lab have collected information on the form factors and the unpolarized structure functions of the neutron, with minimal uncertainty from nuclear binding effects. One experiment has also tried to measure these binding effects more directly, using the method of ''spectator tagging''. These experiments are forerunners for an extensive program with the energy-upgraded 12 GeV accelerator at Jefferson Lab.

  7. Orange and Rockland Utilities (Gas)- Residential Efficiency Program

    Broader source: Energy.gov [DOE]

    Orange and Rockland Utilities provides rebates for residential customers purchasing energy efficient natural gas equipment. Rebates exist for furnaces, water boilers and controls, steam boilers,...

  8. Orange and Rockland Utilities (Electric)- Residential Appliance Recycling Program

    Broader source: Energy.gov [DOE]

    Orange and Rockland Utilities provides rebates for residential customers for recycling older, inefficient refrigerators and freezers. All appliances must meet the program requirements listed on the...

  9. Orange and Rockland Utilities (Electric)- Residential Efficiency Program (New York)

    Broader source: Energy.gov [DOE]

    Orange and Rockland Utilities provides rebates for residential customers for recycling older, inefficient refrigerators and freezers. All appliances must meet the program requirements listed on the...

  10. Jefferson Lab Offers Science Enrichment Program for 5th, 6th...

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

    Jefferson Lab Offers Science Enrichment Program for 5th, 6th & 8th Grade Teachers; Registration Deadline is Sept. 12 Jefferson Lab Open House For many teachers who enroll in...

  11. JSA Fellowship Awards for Research at the Jefferson Lab | Jefferson Lab

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh SchoolIn12 Investigation PeerNOON 2004JeffersonJLab'sJSA Fellowship

  12. Jefferson Lab Hosts High School Science Bowl on Feb. 27 | Jefferson Lab

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh SchoolIn12 InvestigationLab Group Gets 10 MillionJefferson

  13. Jefferson Lab Hosts High School Science Bowl on Feb. 4 | Jefferson Lab

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh SchoolIn12 InvestigationLab Group Gets 10 MillionJefferson4

  14. Jefferson Lab Hosts High School Science Bowl on Feb. 5 | Jefferson Lab

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh SchoolIn12 InvestigationLab Group Gets 10 MillionJefferson45

  15. Jefferson Lab Sets Sept. 1 Groundbreaking for $73.2 M Facility | Jefferson

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh SchoolIn12 InvestigationLabNew SafetyLabJeffersonLab Sets

  16. Jefferson Lab creates better way to discover breast cancer | Jefferson Lab

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh SchoolIn12 InvestigationLabNewLabLabbeginawardsJefferson

  17. Jefferson Lab gets stimulus money (Richmond Times-Dispatch) | Jefferson Lab

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh SchoolIn12electron beam charges up MichaelJefferson

  18. Jefferson Lab in Va awards $14.1 million contract (Daily Press) | Jefferson

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh SchoolIn12electron beam charges upJefferson Lab

  19. Jefferson Lab to Test Tornado Warning Siren on Friday Morning | Jefferson

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh SchoolIn12electron beam charges upJeffersonFriday |10-14

  20. Jefferson Lab to Test Tornado Warning Siren on Friday Morning | Jefferson

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh SchoolIn12electron beam charges upJeffersonFriday |10-14Lab - The

  1. Jefferson Lab to Test Tornado Warning Siren on Friday Morning | Jefferson

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh SchoolIn12electron beam charges upJeffersonFriday |10-14Lab -

  2. Jefferson Lab, ODU team up for center (Inside Business) | Jefferson Lab

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh SchoolIn12electron beam charges upJeffersonFridayMarch 6|

  3. Blue, green, orange, and red upconversion laser

    DOE Patents [OSTI]

    Xie, Ping (San Jose, CA); Gosnell, Timothy R. (Sante Fe, NM)

    1998-01-01T23:59:59.000Z

    A laser for outputting visible light at the wavelengths of blue, green, orange and red light. This is accomplished through the doping of a substrate, such as an optical fiber or waveguide, with Pr.sup.3+ ions and Yb.sup.3+ ions. A light pump such as a diode laser is used to excite these ions into energy states which will produce lasing at the desired wavelengths. Tuning elements such as prisms and gratings can be employed to select desired wavelengths for output.

  4. Blue, green, orange, and red upconversion laser

    DOE Patents [OSTI]

    Xie, P.; Gosnell, T.R.

    1998-09-08T23:59:59.000Z

    A laser is disclosed for outputting visible light at the wavelengths of blue, green, orange and red light. This is accomplished through the doping of a substrate, such as an optical fiber or waveguide, with Pr{sup 3+} ions and Yb{sup 3+} ions. A light pump such as a diode laser is used to excite these ions into energy states which will produce lasing at the desired wavelengths. Tuning elements such as prisms and gratings can be employed to select desired wavelengths for output. 11 figs.

  5. Orange, California: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnual SiteofEvaluatingGroup |JilinLuOpenNorthOlympia GreenThe community EnergyOptimalScopingOrange,

  6. Jefferson Lab Celebrates International Year of Astronomy with...

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

    Holy Roman Emperor. He will also highlight the accomplishments of Nicolaus Copernicus, Tycho Brahe, Galileo Galilei and Sir Isaac Newton, with an emphasis on Galileo's...

  7. Jefferson Lab: New opportunities in hadronic physics

    SciTech Connect (OSTI)

    Rossi, Patrizia [JLAB

    2014-11-01T23:59:59.000Z

    Jefferson Lab (JLab) is a fundamental research laboratory located in Newport News (Virginia-USA) whose primary mission is to explore the fundamental nature of confined states of quarks and gluons. It consists of a high-intensity electron accelerator based on continuous wave superconducting radio frequency technology and a sophisticated array of particle detectors. The design features and excellent performance of the accelerator made it possible to plan an upgrade in energy from 6 to 12 GeV without substantially altering the construction scheme of the accelerator. The program includes the construction of major new experimental facilities for the existing three Halls, A, B, C and the construction of the new experimental Hall D. The research program that motivated the upgrade in energy includes: the study of the nucleon "tomography" through the study of generalized parton distribution functions (GPDs) and transverse momentum dependent parton distribution functions (TMDs), the study of exotics and hybrid mesons to explore the nature of the quarks confinement, precision test of the Standard Model through parity-violating electron scattering experiments. Major highlights of the program at 6 GeV will be presented as well as an overview of the 12 GeV physics program.

  8. QER- Comment of Elizabeth Newton

    Broader source: Energy.gov [DOE]

    A Massachusetts resident, I am writing to oppose the Kinder Morgan/TGP Northeast Energy Natural gas pipeline in Massachusetts. The proposed pipeline path runs through hundreds of private properties and through some of the state's most sensitive eco-systems and would be paid for through new tariffs on our electric bills. Studies conducted by Black & Veatch show that if current levels of state energy efficiency programs continue, there is no need for additional natural gas infrastructure even with economic growth taken into account, yet ISO New England and NESCOE are calling for more pipeline capacity. Natural gas has done it's "bridge" work. With renewables phasing in at an unprecedented rate, adding more natural gas would now take is in the wrong direction for achieving the state's greenhouse gas emissions goals – based on CO2 output alone. Natural gas is also primarily methane, a greenhouse gas over 80 times more powerful than CO2 in the short term, over 20 times more in the long term. When a full accounting of methane's impact is taken into account, studies show that it has no benefit over coal or oil in reducing greenhouse gas effects. We are standing at the far end, having crossed the natural gas "bridge" to a clean energy economy. It's time to step forward into that future we've been building. Thank you. Elizabeth Newton

  9. The 12 GeV Energy Upgrade at Jefferson Laboratory

    SciTech Connect (OSTI)

    Pilat, Fulvia C.

    2012-09-01T23:59:59.000Z

    Two new cryomodules and an extensive upgrade of the bending magnets at Jefferson Lab has been recently completed in preparation for the full energy upgrade in about one year. Jefferson Laboratory has undertaken a major upgrade of its flagship facility, the CW re-circulating CEBAF linac, with the goal of doubling the linac energy to 12 GeV. I will discuss here the main scope and timeline of the upgrade and report on recent accomplishments and the present status. I will then discuss in more detail the core of the upgrade, the new additional C100 cryomodules, their production, tests and recent successful performance. I will then conclude by looking at the future plans of Jefferson Laboratory, from the commissioning and operations of the 12 GeV CEBAF to the design of the MEIC electron ion collider.

  10. Energy Secretary Chu Celebrates Jefferson Lab's 25th Anniversary |

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville Power AdministrationField8, 2000Consumption Survey (CBECS) DataJefferson LabJefferson

  11. Dust Defeats Germ-Killing Fabrics | Jefferson Lab

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville Power AdministrationField Campaign:INEA :Work with Jefferson Lab | JeffersonDurableDurgishDust

  12. Generating Test Data from SOFL Specifications \\Lambda A. Jefferson Offutt

    E-Print Network [OSTI]

    Offutt, Jeff

    Generating Test Data from SOFL Specifications \\Lambda A. Jefferson Offutt ISSE Department, 4A4@cs.hiroshima­cu.ac.jp Abstract Software testing can only be formalized and quantified when a solid basis for test generation can be defined. Tests are commonly generated from the source code, control flow graphs, design representations

  13. azo dye orange: Topics by E-print Network

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

    used for washes. To scale up, use 100 g of glass beads and a 250 ml orange cap Pyrex bottle. 2 HCl down drain. Some HCl will remain with beads. Rinse HCl down drain with tap...

  14. A Message from ASCE "Continued investment in Orange County's

    E-Print Network [OSTI]

    Mease, Kenneth D.

    and Urban Runoff/Flood Control The overall grade point average for Orange County's infrastructure went up the report card is only a first step in highlighting the importance of infrastructure construction

  15. Kelp Wrack: Hopping with Life in Orange County

    E-Print Network [OSTI]

    Dugan, Jenifer E.

    2011-01-01T23:59:59.000Z

    Kelp Wrack: Hopping with Life in Orange County // Jenifer E.from the region’s giant kelp forests and rocky reefs. Muchclean the beach by eating kelp and, along with other tiny

  16. A Preconditioner for a Primal-Dual Newton Conjugate Gradients ...

    E-Print Network [OSTI]

    Kimon Fountoulakis

    2014-12-30T23:59:59.000Z

    Dec 30, 2014 ... A Preconditioner for a Primal-Dual Newton Conjugate Gradients Method for Compressed Sensing Problems.

  17. Comment on the Article "Picturing Newton's Formula for "

    E-Print Network [OSTI]

    George, Glyn

    Comment on the Article "Picturing Newton's Formula for " by Hasan Ã?nal Mathematics in School, 2012 letter of 2013 January which invalidates the derivation of the generalised form of Newton's formula, yet: Mathematics in School, 2013 Jan., vol. 42, no. 1, page 39 I enjoyed reading the extension of Newton's formula

  18. Using Newton's Law for Dark Energy

    E-Print Network [OSTI]

    Paul Frampton

    2012-09-24T23:59:59.000Z

    A model is introduced in which Newton's law is modified between matter and dark energy corpuscles (DECs). The model predicts that the DEC component is presently decelerating in its expansion at 14% of the magnitude of the matter expansion acceleration. In the future, expansion of the DEC universe will continue to decelerate.

  19. On multitemporal generalization of Newton's gravitational law

    E-Print Network [OSTI]

    V. D. Ivashchuk

    2009-05-15T23:59:59.000Z

    A n-time generalization of Newton's law (of universal gravitation) formula in N =n + d + 1-dimensional space-time is conjectured. This formula implies a relation for effective N-dimensional gravitational constant G_{eff} = G cos^2 \\theta, where \\theta is the angle between the direction of motion of two particles in n-dimensional time manifold R^n.

  20. Thomas Jefferson Site Office CX Determinations | U.S. DOE Office...

    Office of Science (SC) Website

    Thomas Jefferson Site Office CX Determinations Safety and Security Policy (SSP) SSP Home About Frequently Used Resources Categorical Exclusion Determinations Continuity of...

  1. Innovative Energy-Saving Process Earns Jefferson Lab Team a 2007...

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

    Tenn. At Jefferson Lab, an existing refrigeration system was reconfigured to allow compressors to automatically scale back when full capacity isn't needed. This process slashed...

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

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

    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...

  3. Performance characteristics of Jefferson Lab's new SRF infrastructure

    SciTech Connect (OSTI)

    Reece, Charles E. [JLAB; Denny, Philip [JLAB; Reilly, Anthony [JLAB

    2013-09-01T23:59:59.000Z

    In the past two years, Jefferson Lab has reconfigured and renovated its SRF support infrastructure as part of the Technology and Engineering Development Facility project, TEDF. The most significant changes are in the cleanroom and chemistry facilities. We report the initial characterization data on the new ultra-pure water systems, cleanroom facilities, describe the reconfiguration of existing facilities and also opportunities for flexible growth presented by the new arrangement.

  4. The Jefferson Lab 12 GeV Upgrade

    E-Print Network [OSTI]

    McKeown, R D

    2010-01-01T23:59:59.000Z

    Construction of the 12 GeV upgrade to the Continuous Electron Beam Accelerator Facility (CEBAF) at the Thomas Jefferson National Accelerator Facility is presently underway. This upgrade includes doubling the energy of the electron beam to 12 GeV, the addition of a new fourth experimental hall, and the construction of upgraded detector hardware. An overview of this upgrade project is presented, along with highlights of the anticipated experimental program.

  5. The Jefferson Lab 12 GeV Upgrade

    E-Print Network [OSTI]

    R. D. McKeown

    2010-09-22T23:59:59.000Z

    Construction of the 12 GeV upgrade to the Continuous Electron Beam Accelerator Facility (CEBAF) at the Thomas Jefferson National Accelerator Facility is presently underway. This upgrade includes doubling the energy of the electron beam to 12 GeV, the addition of a new fourth experimental hall, and the construction of upgraded detector hardware. An overview of this upgrade project is presented, along with highlights of the anticipated experimental program.

  6. The BoNuS Experiment At Jefferson Lab

    SciTech Connect (OSTI)

    Bueltmann, Stephen [Old Dominion University, Physics Department, Norfolk, VA 23529 (United States)

    2005-02-10T23:59:59.000Z

    The BoNuS experiment at Jefferson Lab's Hall B is going to measure the structure of the quasi-free neutron via electron scattering off a deuteron target and detection of the slowly recoiling spectator proton at very backward angles. To detect the low momentum backward recoiling protons, the CLAS detector will be augmented with a novel radial time projection chamber featuring gas electron multipliers. Data taking is anticipated for 2005 or 2006.

  7. The BoNuS Experiment At Jefferson Lab

    SciTech Connect (OSTI)

    Stephen Baltmann

    2005-02-01T23:59:59.000Z

    The BoNuS experiment at Jefferson Lab's Hall B is going to measure the structure of the quasi-free neutron via electron scattering off a deuteron target and detection of the slowly recoiling spectator proton at very backward angles. To detect the low momentum backward recoiling protons, the CLAS detector will be augmented with a novel radial time projection chamber featuring gas electron multipliers. Data taking is anticipated for 2005 or 2006.

  8. Parity Viola?on at Jefferson Lab Kent Paschke

    E-Print Network [OSTI]

    and Peskin, PRL50 (1983) Consider orf1 f1 f2 f2 f1 f2 f1 f2 Lf1f2 = i,j=L,R (g12 i j )2 2 ij ¯f1i µf1i ¯f2j Jefferson Lab · sub-part per billion statistical reach and systematic control · sub-1% normalization probing hadron structure and electroweak physics For future program: · Pioneering · Proton Form

  9. Survival, attachment and internalization of Salmonella agona and Salmonella gaminara on orange surfaces 

    E-Print Network [OSTI]

    Singh, Reema

    2005-11-01T23:59:59.000Z

    Salmonella outbreaks associated with orange juices have been reported in the past. Though there have been studies on the internalization of Salmonella into oranges there is inadequate information on the ability of this ...

  10. Orange Sweet Potato Brie Tartlet 2.5 # cooked diced Sweet potato

    E-Print Network [OSTI]

    Kim, Duck O.

    Orange Sweet Potato Brie Tartlet 2.5 # cooked diced Sweet potato 2 cups orange marmalade 1 cup potato. Spoon into phyllo tart shells. Top with Brie cheese and bake in oven for 10 min at 350 deg oven

  11. Depositional environment of Oligocene Hackberry sandstones, Hilde brandt Bayou area, Jefferson County, Texas

    E-Print Network [OSTI]

    Powers, Brian Kennett

    1980-01-01T23:59:59.000Z

    Regional Geology Frio Stratigraphy Production History Methods . CHARACTERISTICS OF HACKBERRY SANDSTONES Introduction Sedimentary Structures Texture . Composition . Clay Identification . Faunal Occurrence . INTERPRETATION Submarine Canyons... Coast illustrating Hackberry embayment Page Electric log dip section through Hi ldebrandt Bayou area, southern Jefferson County, Texas Structure map on top of Frio in southern Jefferson County illustrating location of fields in the Hildebrandt...

  12. QCD in Nuclear Processes at Jefferson Lab G.P.Gilfoyle

    E-Print Network [OSTI]

    Gilfoyle, Jerry

    scientific instrument at JLab is the Continuous Electron Beam Accelerator Facility (CEBAF) which can produce remains elusive. The primary mission of the Thomas Jefferson National Accelerator Facility (Jefferson Lab electrons of energy up to 6 GeV by recirculating the beam five times through two, superconducting linacs

  13. Review Talk on QCD Processes in Nuclear Matter at Jefferson Lab

    E-Print Network [OSTI]

    Gilfoyle, Jerry

    Matter at Jefferson Lab 2 #12;The Continuous Electron Beam Accelerator Facility at JLab View of site in Newport News, Va. Schematic of accelerator and components. Superconducting Electron Accelerator (338 Collaboration University of Richmond · Introduction · Jefferson Lab: Accelerator and End Stations. · Overview

  14. Optimization Online - An Efficient Gauss-Newton Algorithm for ...

    E-Print Network [OSTI]

    XIN LIU

    2014-06-02T23:59:59.000Z

    Jun 2, 2014 ... An Efficient Gauss-Newton Algorithm for Symmetric Low-Rank Product Matrix Approximations. XIN LIU (liuxin ***at*** lsec.cc.ac.cn) ZAIWEN ...

  15. Optimization Online - Preconditioning of Active-Set Newton Methods ...

    E-Print Network [OSTI]

    Margherita Porcelli

    2014-08-16T23:59:59.000Z

    Aug 16, 2014 ... ... of Active-Set Newton Methods for PDE-constrained Optimal Control ... point linear systems arising in the solution of PDE-constrained optimal ...

  16. The Jefferson Lab 12 GeV Upgrade

    SciTech Connect (OSTI)

    R.D. McKeown

    2011-10-01T23:59:59.000Z

    A major upgrade of the Continuous Electron Beam Accelerator Facility (CEBAF) at the Thomas Jefferson National Accelerator Facility is in progress. Construction began in 2008 and the project should be completed in 2015. The upgrade includes doubling the energy of the electron beam to 12 GeV, the addition of a new fourth experimental hall, and new experimental equipment in three of the experimental halls. A brief overview of this upgrade project is presented along with some highlights of the anticipated experimental program.

  17. Light Baryon Spectroscopy using the CLAS Spectrometer at Jefferson Laboratory

    SciTech Connect (OSTI)

    Volker Crede

    2011-12-01T23:59:59.000Z

    Baryons are complex systems of confined quarks and gluons and exhibit the characteristic spectra of excited states. The systematics of the baryon excitation spectrum is important to our understanding of the effective degrees of freedom underlying nucleon matter. High-energy electrons and photons are a remarkably clean probe of hadronic matter, providing a microscope for examining the nucleon and the strong nuclear force. Current experimental efforts with the CLAS spectrometer at Jefferson Laboratory utilize highly-polarized frozen-spin targets in combination with polarized photon beams. The status of the recent double-polarization experiments and some preliminary results are discussed in this contribution.

  18. Environments of deposition of subsurface Miocene strata, Jefferson County, Texas

    E-Print Network [OSTI]

    Kelly, Frank Randolph

    1965-01-01T23:59:59.000Z

    consist of alternating beds of outer barrier sand and "weak" marine shale and clay. E. C tCfb b' M 0 Z . --Tb C t Dl bt0 *bl Marine Zone is present between the depths of 8020 feet and 7700 feet and is 320 feet thick, The sediments of this rone consist... in the upper two or three sand units of the "C" and "B" Barrier Zones. OB JECTIVES OF THIS STUDY The objectives of this study are: i. To deterxnine the fossil content and lithologic chaxa- cteristics of the Miocene sedixnents in Jefferson County, Texas...

  19. Two Jefferson Lab Scientists Win Prestigious Early Career Awards |

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What'sis Taking Over OurThe Iron Spin Transition in2,EHSS A-Zandof Energy TwoJefferson Lab Two

  20. The 4th Generation Light Source at Jefferson Lab

    SciTech Connect (OSTI)

    Stephen Benson; George Biallas; James Boyce; Donald Bullard; James Coleman; David Douglas; H. Dylla; Richard Evans; Pavel Evtushenko; Albert Grippo; Christopher Gould; Joseph Gubeli; David Hardy; Carlos Hernandez-Garcia; Kevin Jordan; John Klopf; Steven Moore; George Neil; Thomas Powers; Joseph Preble; Daniel Sexton; Michelle D. Shinn; Christopher Tennant; Richard Walker; Shukui Zhang; Gwyn Williams

    2007-04-25T23:59:59.000Z

    A number of "Grand Challenges" in Science have recently been identified in reports from The National Academy of Sciences, and the U.S. Dept. of Energy, Basic Energy Sciences. Many of these require a new generation of linac-based light source to study dynamical and non-linear phenomena in nanoscale samples. In this paper we present a summary of the properties of such light sources, comparing them with existing sources, and then describing in more detail a specific source at Jefferson Lab. Importantly, the JLab light source has developed some novel technology which is a critical enabler for other new light sources.

  1. JSA Awards Seven Graduate Fellowships for Research at Jefferson Lab |

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Science (SC)Integrated Codes |Is Your Home as Ready for Summer as YouJ.LabJefferson LabN

  2. JLab's economic footprint expands (Daily Press) | Jefferson Lab

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh SchoolIn12 Investigation PeerNOON 2004JeffersonJLab's YouTube

  3. Jefferson Lab Builds First Single Crystal Single Cell Accelerating Cavity |

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh SchoolIn12 Investigation PeerNOON...January 2015H8/0UpgradeJefferson

  4. Jefferson Lab Hosts Upcoming Science Lectures on DNA and Chocolate |

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh SchoolIn12 InvestigationLab Group Gets 10Jefferson Lab

  5. Jefferson Lab Invites Families, Groups, Classes to Physics Fest Events |

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh SchoolIn12 InvestigationLab GroupHuman ResourcesJefferson

  6. Jefferson Lab Scientist Receives 2009 Presidential Early Career Award |

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh SchoolIn12 InvestigationLabNew SafetyLabJefferson Lab

  7. Jefferson Lab Selects Italian Physicist As Deputy Associate Director for

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh SchoolIn12 InvestigationLabNew SafetyLabJefferson

  8. Jefferson Lab holds educational, insightful science lectures in June |

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh SchoolIn12electron beam charges upJefferson Lab holds educational,

  9. Jefferson Lab is now using Team Worldwide for International Customs

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh SchoolIn12electron beam charges upJefferson Labshipping needs |

  10. Jefferson Lab's Detector Group Wins Prestigious National Award |

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh SchoolIn12electron beam charges upJeffersonFridayMarch 6 |31

  11. Jefferson Lab's Spring 2007 Science Series features two lectures in

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh SchoolIn12electron beam charges upJeffersonFridayMarch 6

  12. Local firms benefit from Jefferson Lab upgrade (Inside Business) |

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    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh SchoolIn12electron 9 5Let usNucleartearing mode flowsLocalJefferson

  13. Jefferson, North Carolina: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are8COaBulkTransmissionSitingProcess.pdfGetecGtelInterias SolarJaneJefferson, Iowa: Energy Resources Jump to:03°,

  14. Jefferson City, Missouri: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to: navigation, searchOf Kilauea Volcano, Hawaii | Wind FarmJefferson City, Missouri: Energy

  15. Jefferson County, Colorado: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to: navigation, searchOf Kilauea Volcano, Hawaii | Wind FarmJefferson City, Missouri:

  16. Jefferson West High School Wind Project | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to: navigation, searchOf Kilauea Volcano, Hawaii | Wind FarmJefferson City, Missouri:OffshoreWest

  17. Energy Secretary Chu Celebrates Jefferson Lab's 25th Anniversary |

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville Power AdministrationField8, 2000Consumption Survey (CBECS) DataJefferson Lab

  18. Port Jefferson, New York: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere I Geothermal PwerPerkins County, Nebraska: EnergyPiratiniEdwards, Wisconsin: Energy ResourcesJefferson, New

  19. NASA Scientist Discusses Nanotube Advances Feb. 9 at Jefferson Lab |

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Saleshttp://www.fnal.gov/directorate/nalcal/nalcal02_07_05_files/nalcal.gif Directorate - Events - Fermilab at WorkJefferson Lab

  20. Bound Neutrons Pave Way to Free Ones | Jefferson Lab

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    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office511041clothAdvanced Materials Advanced Materials Find FindRewindParticleBorn on anJefferson

  1. Bound Neutrons Pave Way to Free Ones | Jefferson Lab

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office511041clothAdvanced Materials Advanced Materials Find FindRewindParticleBorn on anJeffersonBound Neutrons

  2. Leavenworth-Jefferson E C, Inc | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnual SiteofEvaluatingGroup |Jilin Zhongdiantou NewKoreaLaor Batteries LtdandLeavenworth-Jefferson E

  3. Media Advisory - Jefferson Lab Hosts Summer Intern Science Poster Session |

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    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHighand Retrievals from a NewCuneo Matthew1,MechanicalJefferson Lab

  4. Media Advisory - Jefferson Lab Hosts Summer Intern Science Poster Session |

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHighand Retrievals from a NewCuneo Matthew1,MechanicalJefferson

  5. Advisory Committee Recommends Continued Investment in Jefferson Lab |

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    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office511041cloth DocumentationProducts (VAP) VAP7-0973 1BP-14Scripting for Advanced WorkflowsaJefferson Lab

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

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    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What'sis Taking Over OurThe Iron SpinPrincetonUsingWhatY-12 recognizedThesis Prize | Jefferson Lab

  7. Holographic Space-time and Newton's Law

    E-Print Network [OSTI]

    Tom Banks; Willy Fischler

    2013-10-25T23:59:59.000Z

    We derive Newton's Law from the formalism of Holographic Space-Time (HST). More precisely, we show that for a large class of Hamiltonians of the type proposed previously for the HST description of a geodesic in Minkowski space, the eikonal for scattering of two massless particles at large impact parameter scales as expected with the impact parameter and the energies of the particles in the center of mass (CM) frame. We also discuss the criteria for black hole production in this collision, and find an estimate, purely within the HST framework, for the impact parameter at which it sets in, which coincides with the estimate based on general relativity.

  8. North Newton School Corp | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to: navigation, searchOfRoseConcerns Jumpsource History View New Pages RecentINorthNorthNewton

  9. Detector development for Jefferson Lab's 12GeV Upgrade

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

    Qiang, Yi [JLAB] (ORCID:0000000170267841)

    2015-05-01T23:59:59.000Z

    Jefferson Lab will soon finish its highly anticipated 12 GeV Upgrade. With doubled maximum energy, Jefferson Lab’s Continuous Electron Beam Accelerator Facility (CEBAF) will enable a new experimental program with substantial discovery potential, addressing important topics in nuclear, hadronic and electroweak physics. In order to take full advantage of the high energy, high luminosity beam, new detectors are being developed, designed and constructed to fit the needs of different physics topics. The paper will give an overview of various new detector technologies to be used for 12 GeV experiments. It will then focus on the development of two solenoid-based spectrometers, the GlueX and SoLID spectrometers. The GlueX experiment in Hall D will study the complex properties of gluons through exotic hybrid meson spectroscopy. The GlueX spectrometer, a hermetic detector package designed for spectroscopy and the associated partial wave analysis, is currently in the final stage of construction. Hall A, on the other hand, is developing the SoLID spectrometer to capture the 3D image of the nucleon from semi-inclusive processes and to study the intrinsic properties of quarks through mirror symmetry breaking. Such a spectrometer will have the capability to handle very high event rates while still maintaining a large acceptance in the forward region.

  10. RF Power Upgrade for CEBAF at Jefferson Laboratory

    SciTech Connect (OSTI)

    Andrew Kimber,Richard Nelson

    2011-03-01T23:59:59.000Z

    Jefferson Laboratory (JLab) is currently upgrading the 6GeV Continuous Electron Beam Accelerator Facility (CEBAF) to 12GeV. As part of the upgrade, RF systems will be added, bringing the total from 340 to 420. Existing RF systems can provide up to 6.5 kW of CW RF at 1497 MHZ. The 80 new systems will provide increased RF power of up to 13 kW CW each. Built around a newly designed and higher efficiency 13 kW klystron developed for JLab by L-3 Communications, each new RF chain is a completely revamped system using hardware different than our present installations. This paper will discuss the main components of the new systems including the 13 kW klystron, waveguide isolator, and HV power supply using switch-mode technology. Methodology for selection of the various components and results of initial testing will also be addressed. Notice: Authored by Jefferson Science Associates, LLC under U.S. DOE Contract No. DE-AC05-06OR23177. The U.S. Government retains a non-exclusive, paid-up, irrevocable, world-wide license to publish or reproduce this manuscript for U.S. Government purposes.

  11. Detector development for Jefferson Lab's 12GeV Upgrade

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

    Qiang, Yi

    2015-05-01T23:59:59.000Z

    Jefferson Lab will soon finish its highly anticipated 12 GeV Upgrade. With doubled maximum energy, Jefferson Lab’s Continuous Electron Beam Accelerator Facility (CEBAF) will enable a new experimental program with substantial discovery potential, addressing important topics in nuclear, hadronic and electroweak physics. In order to take full advantage of the high energy, high luminosity beam, new detectors are being developed, designed and constructed to fit the needs of different physics topics. The paper will give an overview of various new detector technologies to be used for 12 GeV experiments. It will then focus on the development of two solenoid-based spectrometers,more »the GlueX and SoLID spectrometers. The GlueX experiment in Hall D will study the complex properties of gluons through exotic hybrid meson spectroscopy. The GlueX spectrometer, a hermetic detector package designed for spectroscopy and the associated partial wave analysis, is currently in the final stage of construction. Hall A, on the other hand, is developing the SoLID spectrometer to capture the 3D image of the nucleon from semi-inclusive processes and to study the intrinsic properties of quarks through mirror symmetry breaking. Such a spectrometer will have the capability to handle very high event rates while still maintaining a large acceptance in the forward region.« less

  12. EMC effect for light nuclei: new results from Jefferson Lab

    SciTech Connect (OSTI)

    Daniel, A. [Dept. of Physics and Astronomy, Ohio University, Athens OH 45701 (United States)

    2011-10-24T23:59:59.000Z

    High energy lepton scattering has been the primary tool for mapping out the quark distributions of nucleons and nuclei. Measurements of deep inelastic scattering in nuclei show that the quark distributions in heavy nuclei are not simply the sum of the quark distributions of the constituent proton and neutron, as one might expect for a weakly bound system. This modification of the quark distributions in nuclei is known as the EMC effect. I will discuss the results from Jefferson Lab (JLab) experiment E03-103, a precise measurement of the EMC effect in few-body nuclei with emphasis on the large x region. Data from the light nuclei suggests that the nuclear dependence of the high x quark distribution may depend on the nucleon's local environment, rather than being a purely bulk effect. In addition, I will also discuss about a future experiment at the upgraded 12 GeV Jefferson Lab facility which will further investigate the role of the local nuclear environment and the influence of detailed nuclear structure to the modification of quark distributions.

  13. EMC effect for light nuclei: New results from Jefferson Lab

    SciTech Connect (OSTI)

    Aji Daniel

    2011-10-01T23:59:59.000Z

    High energy lepton scattering has been the primary tool for mapping out the quark distributions of nucleons and nuclei. Measurements of deep inelastic scattering in nuclei show that the quark distributions in heavy nuclei are not simply the sum of the quark distributions of the constituent proton and neutron, as one might expect for a weakly bound system. This modification of the quark distributions in nuclei is known as the EMC effect. I will discuss the results from Jefferson Lab (JLab) experiment E03-103, a precise measurement of the EMC effect in few-body nuclei with emphasis on the large x region. Data from the light nuclei suggests that the nuclear dependence of the high x quark distribution may depend on the nucleon's local environment, rather than being a purely bulk effect. In addition, I will also discuss about a future experiment at the upgraded 12 GeV Jefferson Lab facility which will further investigate the role of the local nuclear environment and the influence of detailed nuclear structure to the modification of quark distributions.

  14. Isaac Newton Institute for Mathematical Sciences University of Cambridge

    E-Print Network [OSTI]

    Director: Further particulars The Institute The Newton Institute is a national and international visitor. Further information about the Institute is at www.newton.ac.uk. Purpose of role Under the strategic, the Newsletter, and the library of Case Studies of outcomes of research done at the Institute; 8) To organise

  15. Une dmonstration de la dcomposition de Dunford inspir de l'algorithme de Newton.

    E-Print Network [OSTI]

    Ressayre, Nicolas

    algorithme qui a le bon gout d'être très rapide). 2 Algorithme de Newton L'algorithme de Newton est un

  16. Jefferson Lab Awards $14.1 Million Contract To Virginia Beach...

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

    14.1 Million Contract To Virginia Beach Construction Company HallD This architectural rendering depicts Jefferson Lab's Hall D complex, to be built as part of a 310 million...

  17. Jefferson Lab's Education web site hits new high-usage record...

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

    web site hits new high-usage record during 2003 SOL season April 2, 2003 Jefferson Lab's Science Education web site is hitting new highs in usage - on a daily basis. Just yesterday...

  18. Jefferson Lab's Education Web Site Hits New High-Usage Record...

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

    Web Site Hits New High-Usage Record April 22, 2002 Jefferson Lab's Science Education web site hit a new high in usage yesterday. In a 24-hour-period nearly 125,000 pages were...

  19. Jefferson Lab to Conduct Test of its Tornado Warning Siren at...

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

    Sept. 5, 2013 - The Thomas Jefferson National Accelerator Facility will conduct a of test its tornado warning siren at 10:30 a.m. on Friday, Sept. 6. Depending on weather...

  20. Jefferson Lab to Conduct Test of its Tornado Warning Siren at...

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

    NEWS, Va. - The Thomas Jefferson National Accelerator Facility will conduct the monthly test of its tornado warning siren at 10:30 a.m. on Friday, Jan. 9. Depending on weather...

  1. Jefferson Lab to Conduct Test of its Tornado Warning Siren at...

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

    0, 2013 - The Thomas Jefferson National Accelerator Facility will conduct a test of its tornado warning siren at 10:30 a.m. on Friday, Nov. 1. Depending on weather conditions at...

  2. Jefferson Lab to Conduct Test of its Tornado Warning Siren at...

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

    , 2013 - The Thomas Jefferson National Accelerator Facility will conduct a test of its tornado warning siren at 10:30 a.m. on Friday, Oct. 4. Depending on weather conditions at the...

  3. Jefferson Lab to Conduct Test of its Tornado Warning Siren at...

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

    Jan. 2, 2014 - The Thomas Jefferson National Accelerator Facility will conduct a test of its tornado warning siren at 10:30 a.m. on Friday. Depending on weather conditions at the...

  4. Jefferson Lab to Test its Tornado Warning Siren at 10:30 a.m...

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

    3, 2015 - The Thomas Jefferson National Accelerator Facility will conduct the monthly test of its tornado warning siren at 10:30 a.m. on Friday, June 5. Depending on weather...

  5. Jefferson Lab to Conduct Test of its Tornado Warning Siren at...

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

    Dec. 5, 2013 - The Thomas Jefferson National Accelerator Facility will conduct a test of its tornado warning siren at 10:30 a.m. on Friday. Depending on weather conditions at the...

  6. Thomas Jefferson High School Wins Virginia Science Bowl for 7th...

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

    NEWPORT NEWS, Va., Feb. 20, 2008 - The Thomas Jefferson High School for Science and Technology team pummeled its competition at the Virginia Regional Science Bowl held Feb. 2 at...

  7. New JLab SOTRs Can Get Required Training on March 24 | Jefferson...

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

    Training on March 24 Jefferson Lab will hold Subcontracting Officer Technical Representative (SOTR) training (GEN020) on Tuesday, March 24, from 8:15 a.m.-12 noon in the...

  8. Jefferson Lab to Test its Tornado Warning Siren at 10:30 a.m...

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

    2, 2015 - The Thomas Jefferson National Accelerator Facility will conduct the monthly test of its tornado warning siren at 10:30 a.m. on Friday, April 3. Depending on weather...

  9. Jefferson Lab to Test its Tornado Warning Siren at 10:30 a.m...

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

    3, 2015 - The Thomas Jefferson National Accelerator Facility will conduct the monthly test of its tornado warning siren at 10:30 a.m. on Friday, March 6. Depending on weather...

  10. Jefferson Lab's Free-Electron Laser Joins With Others in New...

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

    Free-Electron Laser Joins With Others in New Research Venture NEWPORT NEWS, VA, April 29, 2009 - The U.S. Department of Energy's Thomas Jefferson National Accelerator Facility will...

  11. RICH detector at Jefferson Lab, design, performance and physics results

    SciTech Connect (OSTI)

    E. Cisbani; S. Colilli; F. Cusanno; S. Frullani; R. Frantoni; F. Garibaldi; F. Giuliani; M. Gricia; M. Lucentini; M.L. Magliozzi; L. Pierangeli; F. Santavenere; P. Veneroni; G.M. Urciuoli; M. Iodice; G. De Cataldo; R. De Leo; L. Lagamba; S. Marrone; E. Nappi; V. Paticchio; R. Feuerbach; D. Higinbotham; J. Lerose; B. Kross; R. Michaels; Y. Qiang; B. Reitz; J. Segal; B. Wojtsekhowski; C. Zorn; A. Acha; P. Markowitz; C.C. Chang; H. Breuer

    2006-04-01T23:59:59.000Z

    Since 2004 the hadron spectrometer of Hall A at Jefferson Lab is equipped with a proximity focusing RICH. This detector is capable of identify kaon from pion and proton with an angular separation starting from 6 sigma at 2 GeV/c. The RICH design is conceptually similar to the ALICE HMPID RICH; it uses a C6F14 liquid radiator and a 300 nm layer of CsI deposited on the cathode pad plane of an asymmetric MWPC. The RICH has operated for the Hypernuclear Spectroscopy Experiment E94-107, which took data in the last two years. Design details and performance along with first physics results from the hypernuclear experiment are shortly presented.

  12. Jefferson Lab 12 GeV CEBAF Upgrade

    SciTech Connect (OSTI)

    Claus Rode

    2010-04-01T23:59:59.000Z

    The existing continuous electron beam accelerator facility (CEBAF) at Thomas Jefferson National Accelerator Facility (TJNAF) is a 5-pass, recirculating cw electron Linac operating at ~6 GeV and is devoted to basic research in nuclear physics. The 12 GeV CEBAF Upgrade is a $310 M project, sponsored by the Department of Energy (DOE) Office of Nuclear Physics, that will expand its research capabilities substantially by doubling the maximum energy and adding major new experimental apparatus. The project received construction approval in September 2008 and has started the major procurement process. The cryogenic aspects of the 12 GeV CEBAF Upgrade includes: doubling the accelerating voltages of the Linacs by adding ten new high-performance, superconducting radiofrequency (SRF) cryomodules (CMs) to the existing 42 1/4 cryomodules; doubling of the 2 K cryogenics plant; and the addition of eight superconducting magnets.

  13. A syncrhronized FIR/VUV light source at Jefferson Lab

    SciTech Connect (OSTI)

    Shinn, Michelle D. [JLAB, Newport News, VA (United States)

    2013-05-31T23:59:59.000Z

    This slide show presents an introduction to Free-Electron Lasers (FELs) and what makes the JLab FELs unique. Ways of exploring the nature of matter with the FEL are shown, including applications in the THz, IR, UV, and VUV. The Jefferson Lab FEL Facility is unique in its high average brightness in the THz, and IR -- VUV spectral regions and Sub ps-pulses at MHz repetition rates. With an installation of a rebuilt 'F100' cryomodule the linac energy will increase to > 150MeV. This will permit lasing further into the UV and extend VUV. With the swap of our CEBAF-style cryounit for an improved booster, we could lase in the VUV. Addition of a wiggler and optical cavity slightly canted from the UV beamline would allow simultaneous lasing of UV and THz for high E-field 2 color experiments.

  14. Probing the nucleon structure with SIDIS at Jefferson Lab

    SciTech Connect (OSTI)

    Pereira, Sergio Anafalos [INFN-Frascati

    2013-01-01T23:59:59.000Z

    In recent years, measurements of azimuthal moments of polarized hadronic cross sections in hard processes have emerged as a powerful tool to probe nucleon structure. Many experiments worldwide are currently trying to pin down various effects related to nucleon structure through Semi-Inclusive Deep-Inelastic Scattering (SIDIS). Azimuthal distributions of final-state particles in semi-inclusive deep inelastic scattering, in particular, are sensitive to the orbital motion of quarks and play an important role in the study of Transverse Momentum Dependent parton distribution functions (TMDs) of quarks in the nucleon. The CLAS spectrometer, installed in Hall-B at Jefferson Lab, has collected semi-inclusive data using the CEBAF 6 GeV polarized electron beam on polarized solid NH{sub 3} and ND{sub 3} targets. An overview of these measurements is presented.

  15. The 6 GeV TMD Program at Jefferson Lab

    SciTech Connect (OSTI)

    Puckett, Andrew J. [University of Connecticut, JLAB

    2015-01-01T23:59:59.000Z

    The study of the transverse momentum dependent parton distributions (TMDs) of the nucleon in semi-inclusive deep-inelastic scattering (SIDIS) has emerged as one of the major physics motivations driving the experimental program using the upgraded 11 GeV electron beam at Jefferson Lab’s Continuous Electron Beam Accelerator Facility (CEBAF). The accelerator construction phase of the CEBAF upgrade is essentially complete and commissioning of the accelerator has begun as of April, 2014. As the new era of CEBAF operations begins, it is appropriate to review the body of published and forthcoming results on TMDs from the 6 GeV era of CEBAF operations, discuss what has been learned, and discuss the key challenges and opportunities for the 11 GeV SIDIS program of CEBAF.

  16. A SYNCHRONIZED FIR/VUV LIGHT SOURCE AT JEFFERSON LAB

    SciTech Connect (OSTI)

    Stephen Benson, David Douglas, George Neil, Michelle D. Shinn, Gwyn Williams

    2012-07-01T23:59:59.000Z

    We describe a dual free-electron laser (FEL) configuration on the UV Demo FEL at Jefferson Lab that allows simultaneous lasing at FIR/THz and UV wavelengths. The FIR/THz source would be an FEL oscillator with a short wiggler providing nearly diffraction-limited pulses with pulse energy exceeding 50 microJoules. The FIR source would use the exhaust beam from a UVFEL. The coherent harmonics in the VUV from the UVFEL are out-coupled through a hole. The FIR source uses a shorter resonator with either hole or edge coupling to provide very high power FIR pulses. Simulations indicate excel-lent spectral brightness in the FIR region with over 100 W/cm-1 output.

  17. Physics Opportunities with the 12 GeV Upgrade at Jefferson Lab

    E-Print Network [OSTI]

    Dudek, Jozef; Essig, Rouven; Kumar, Krishna; Meyer, Curtis; McKeown, Robert; Meziani, Zein Eddine; Miller, Gerald A; Pennington, Michael; Richards, David; Weinstein, Larry; Young, Glenn

    2012-01-01T23:59:59.000Z

    This white paper summarizes the scientific opportunities for utilization of the upgraded 12 GeV Continuous Electron Beam Accelerator Facility (CEBAF) and associated experimental equipment at Jefferson Lab. It is based on the 52 proposals recommended for approval by the Jefferson Lab Physics Advisory Committee.The upgraded facility will enable a new experimental program with substantial discovery potential to address important topics in nuclear, hadronic, and electroweak physics.

  18. Physics Opportunities with the 12 GeV Upgrade at Jefferson Lab

    E-Print Network [OSTI]

    Jozef Dudek; Rolf Ent; Rouven Essig; Krishna Kumar; Curtis Meyer; Robert McKeown; Zein Eddine Meziani; Gerald A. Miller; Michael Pennington; David Richards; Larry Weinstein; Glenn Young

    2012-08-07T23:59:59.000Z

    This white paper summarizes the scientific opportunities for utilization of the upgraded 12 GeV Continuous Electron Beam Accelerator Facility (CEBAF) and associated experimental equipment at Jefferson Lab. It is based on the 52 proposals recommended for approval by the Jefferson Lab Program Advisory Committee.The upgraded facility will enable a new experimental program with substantial discovery potential to address important topics in nuclear, hadronic, and electroweak physics.

  19. DRIVER ACCELERATOR DESIGN FOR THE 10 KW UPGRADE OF THE JEFFERSON LAB IR FEL

    E-Print Network [OSTI]

    DRIVER ACCELERATOR DESIGN FOR THE 10 KW UPGRADE OF THE JEFFERSON LAB IR FEL D. Douglas, S. V, Newport News, VA23606, USA Abstract An upgrade of the Jefferson Lab IR FEL [1] is now un- der construction. It will provide 10 kW output light power in a wavelength range of 2­10 µm. The FEL will be driven by a modest

  20. Studies of the Electromagnetic Structure of Mesons at Jefferson Lab

    SciTech Connect (OSTI)

    Dale, Daniel, S.

    2012-11-11T23:59:59.000Z

    The Jefferson Laboratory Hall B PrimEx Collaboration is using tagged photons to perform an absolute 1.4% level cross section measurement of the photoproduction of neutral pions in the Coulomb field of a nucleus. The absolute cross section for this process is directly proportional to the neutral pion radiative decay width and consequently the uncertainty in the luminosity is directly reflected in the final error bar of the measurement. The PI has taken primary responsibility for the photon flux determination and in this technical report, we outline the steps taken to limit the uncertainty in the tagged photon flux to the 1% level. These include the use of a total absorption counter for absolute flux calibration, a pair spectrometer for online relative flux monitoring, and updated procedures for postbremsstrahlung electron counting. The photon tagging technique has been used routinely in its various forms to provide quasimonochromatic photons for absolute photonuclear cross section measurements. The analysis of such experiments in the context of bremsstrahlung photon tagging was summarized by Owens in 1990. Since then, a number of developments have made possible significant improvements in the implementation of this technique. Here, we describe the steps taken by the PrimEx Collaboration in Hall B of Jefferson Laboratory to limit the systematic uncertainty in the absolute photon flux to 1%. They include an absolute flux calibration at low intensity with a total absorption counter, online relative flux monitoring with a pair spectrometer, and the use of multihit time to digital converters for post bremsstrahlung electron counting during production data runs. While this discussion focuses on the analysis techniques utilized by the PrimEx Collaboration which involves a bremsstrahlung based photon tagging system to measure the neutral pion lifetime, the methods described herein readily apply to other types of photon tagging systems.

  1. Updated 7/30/2012 Black Bean and Orange Salsa ...........................................................................................................4

    E-Print Network [OSTI]

    Updated 7/30/2012 #12;2 Contents Black Bean and Orange Salsa ...........................................................................................................4 Cannellini Bean Dip ...............................................................................................................................5 Garlic & White Bean Dip

  2. A NEWTON-PICARD APPROACH FOR EFFICIENT NUMERICAL ...

    E-Print Network [OSTI]

    2009-10-28T23:59:59.000Z

    tion for fluid dynamics a simultaneous method can save up to 70 percent of ... of the Newton-Picard iSQP method for the non-linear SMB process are available.

  3. Computing modified Newton directions using a partial Cholesky factorization

    SciTech Connect (OSTI)

    Forsgren, A. [Royal Inst. of Tech., Stockholm (Sweden). Dept. of Mathematics; Gill, P.E. [California Univ., San Diego, La Jolla, CA (United States); Murray, W. [Stanford Univ., CA (United States). Systems Optimization Lab.

    1993-03-01T23:59:59.000Z

    The effectiveness of Newton`s method for finding an unconstrained minimizer of a strictly convex twice continuously differentiable function has prompted the proposal of various modified Newton inetliods for the nonconvex case. Linesearch modified Newton methods utilize a linear combination of a descent direction and a direction of negative curvature. If these directions are sufficient in a certain sense, and a suitable linesearch is used, the resulting method will generate limit points that satisfy the second-order necessary conditions for optimality. We propose an efficient method for computing a descent direction and a direction of negative curvature that is based on a partial Cholesky factorization of the Hessian. This factorization not only gives theoretically satisfactory directions, but also requires only a partial pivoting strategy, i.e., the equivalent of only two rows of the Schur complement need be examined at each step.

  4. Computing over the Reals: Where Turing Meets Newton lblum@cs.cmu.edu Computing over the Reals: Where Turing Meets Newton1

    E-Print Network [OSTI]

    Treuille, Adrien

    for modern scientific computation where most algorithms --with origins in Newton, Euler, Gauss, et. al germinating from the real calculus of Newton and the discrete computation of computer science. The canonical

  5. West Orange, New Jersey: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere IRaghuraji Agro IndustriesTown ofNationwideWTED JumpHills, New York: EnergyMountain, Utah:Orange, New Jersey:

  6. Computer rendering and visual detection of orange peel Jonathan Konieczny, Gary Meyer

    E-Print Network [OSTI]

    Meyer, Gary

    applications. The orange peel measurements from a standard industrial instrument are used to construct a height field, and this surface is rendered using traditional normal mapping techniques. Comparisons are made that orange peel is more visible on dark paint colors than on light paint colors. The latter outcome suggests

  7. Problems with the Newton-Schrödinger Equations

    E-Print Network [OSTI]

    C. Anastopoulos; B. L. Hu

    2014-07-27T23:59:59.000Z

    We examine the origin of the Newton-Schr\\"odinger equations (NSEs) that play an important role in alternative quantum theories (AQT), macroscopic quantum mechanics and gravity-induced decoherence. We show that NSEs for individual particles do not follow from general relativity (GR) plus quantum field theory (QFT). Contrary to what is commonly assumed, the NSEs are not the weak-field (WF), non-relativistic (NR) limit of the semi-classical Einstein equation (SCE) (this nomenclature is preferred over the `M\\/oller-Rosenfeld equation') based on GR+QFT. The wave-function in the NSEs makes sense only as that for a mean field describing a system of $N$ particles as $N \\rightarrow \\infty$, not that of a single or finite many particles. From GR+QFT the gravitational self-interaction leads to mass renormalization, not to a non-linear term in the evolution equations of some AQTs. The WF-NR limit of the gravitational interaction in GR+QFT involves no dynamics. To see the contrast, we give a derivation of the equation (i) governing the many-body wave function from GR+QFT and (ii) for the non-relativistic limit of quantum electrodynamics (QED). They have the same structure, being linear, and very different from NSEs. Adding to this our earlier consideration that for gravitational decoherence the master equations based on GR+QFT lead to decoherence in the energy basis and not in the position basis, despite some AQTs desiring it for the `collapse of the wave function', we conclude that the origins and consequences of NSEs are very different, and should be clearly demarcated from those of the SCE equation, the only legitimate representative of semiclassical gravity, based on GR+QFT.

  8. Online Model Server for the Jefferson Lab Accelerator

    SciTech Connect (OSTI)

    Yves R. Roblin; Theodore L. Larrieu

    2001-11-01T23:59:59.000Z

    A beam physics model server has been developed for the Jefferson Lab accelerator. This online model server is a redesign of the ARTEMIS model server [1]. The need arose from an impedance mismatch between the current requirements and ARTEMIS capabilities. The purpose of the model server is to grant access to both static (machine lattice parameters) and dynamic (actual machine settings) data using a single programming interface. A set of useful optics calculations (R-Matrix, orbit fit, etc.) has also been implemented and can be invoked by clients via the model interface. Clients may also register their own dynamic models in the server. The server interacts with clients using the CDEV protocol, and data integrity is guaranteed by a relational database (ORACLE) accessed through a persistence layer. By providing a centralized repository for both data and optics calculations,the following benefits were achieved: optimal use of network consumption, software reuse,and ease of maintenance. This work was supported by the U.S. DOE contract No. DE-AC05-84ER40150. Reference: The Use of ARTEMIS with High-Level Applications, ICALEPCS 95, Chicago, IL, Oct 29-Nov 3, 1995.

  9. Gluonic Excitations and Experimental Hall-D at Jefferson Lab

    SciTech Connect (OSTI)

    Stevens, Justin [MIT

    2014-07-01T23:59:59.000Z

    A new tagged photon beam facility is being constructed in experimental Hall-D at Jefferson Lab as a part of the 12 GeV upgrade program. The 9 GeV linearly-polarized photon beam will be produced via coherent Bremsstrahlung using the CEBAF electron beam, incident on a diamond radiator. The GlueX experiment in Hall-D will use this photon beam to search for and study the pattern of gluonic excitations in the meson spectrum produced through photoproduction reactions with a liquid hydrogen target. Recent lattice QCD calculations predict a rich spectrum of hybrid mesons, that are formed by exciting the gluonic field that couples the quarks. A subset of these hybrid mesons are predicted to have exotic quantum numbers which cannot be formed from a simple qq^- pair, and thus provide an ideal laboratory for testing QCD in the confinement regime. In these proceedings the status of the construction and installation of the GlueX detector will be presented, in addition to simulation results for some reactions of interest in hybrid meson searches.

  10. Gluonic Excitations and Experimental Hall-D at Jefferson Lab

    E-Print Network [OSTI]

    Justin R. Stevens

    2014-07-08T23:59:59.000Z

    A new tagged photon beam facility is being constructed in experimental Hall-D at Jefferson Lab as a part of the 12 GeV upgrade program. The 9 GeV linearly-polarized photon beam will be produced via coherent Bremsstrahlung using the CEBAF electron beam, incident on a diamond radiator. The GlueX experiment in Hall-D will use this photon beam to search for and study the pattern of gluonic excitations in the meson spectrum produced through photoproduction reactions with a liquid hydrogen target. Recent lattice QCD calculations predict a rich spectrum of hybrid mesons, that are formed by exciting the gluonic field that couples the quarks. A subset of these hybrid mesons are predicted to have exotic quantum numbers which cannot be formed from a simple $q\\bar{q}$ pair, and thus provide an ideal laboratory for testing QCD in the confinement regime. In these proceedings the status of the construction and installation of the GlueX detector will be presented, in addition to simulation results for some reactions of interest in hybrid meson searches.

  11. Evolution of the Generic Lock System at Jefferson Lab

    SciTech Connect (OSTI)

    Brian Bevins; Yves Roblin

    2003-10-13T23:59:59.000Z

    The Generic Lock system is a software framework that allows highly flexible feedback control of large distributed systems. It allows system operators to implement new feedback loops between arbitrary process variables quickly and with no disturbance to the underlying control system. Several different types of feedback loops are provided and more are being added. This paper describes the further evolution of the system since it was first presented at ICALEPCS 2001 and reports on two years of successful use in accelerator operations. The framework has been enhanced in several key ways. Multiple-input, multiple-output (MIMO) lock types have been added for accelerator orbit and energy stabilization. The general purpose Proportional-Integral-Derivative (PID) locks can now be tuned automatically. The generic lock server now makes use of the Proxy IOC (PIOC) developed at Jefferson Lab to allow the locks to be monitored from any EPICS Channel Access aware client. (Previously clients had to be Cdev aware.) The dependency on the Qt XML parser has been replaced with the freely available Xerces DOM parser from the Apache project.

  12. Horava-Lifshitz Gravity From Dynamical Newton-Cartan Geometry

    E-Print Network [OSTI]

    Hartong, Jelle

    2015-01-01T23:59:59.000Z

    Recently it has been established that torsional Newton-Cartan (TNC) geometry is the appropriate geometrical framework to which non-relativistic field theories couple. We show that when these geometries are made dynamical they give rise to Horava-Lifshitz (HL) gravity. Projectable HL gravity corresponds to dynamical Newton-Cartan (NC) geometry without torsion and non-projectable HL gravity corresponds to dynamical NC geometry with twistless torsion (hypersurface orthogonal foliation). We build a precise dictionary relating all fields (including the scalar khronon), their transformations and other properties in both HL gravity and dynamical TNC geometry. We use TNC invariance to construct the effective action for dynamical twistless torsional Newton-Cartan geometries in 2+1 dimensions for dynamical exponent 1

  13. Computing modified Newton directions using a partial Cholesky factorization

    SciTech Connect (OSTI)

    Forsgren, A. (Royal Inst. of Tech., Stockholm (Sweden). Dept. of Mathematics); Gill, P.E. (California Univ., San Diego, La Jolla, CA (United States)); Murray, W. (Stanford Univ., CA (United States). Systems Optimization Lab.)

    1993-03-01T23:59:59.000Z

    The effectiveness of Newton's method for finding an unconstrained minimizer of a strictly convex twice continuously differentiable function has prompted the proposal of various modified Newton inetliods for the nonconvex case. Linesearch modified Newton methods utilize a linear combination of a descent direction and a direction of negative curvature. If these directions are sufficient in a certain sense, and a suitable linesearch is used, the resulting method will generate limit points that satisfy the second-order necessary conditions for optimality. We propose an efficient method for computing a descent direction and a direction of negative curvature that is based on a partial Cholesky factorization of the Hessian. This factorization not only gives theoretically satisfactory directions, but also requires only a partial pivoting strategy, i.e., the equivalent of only two rows of the Schur complement need be examined at each step.

  14. What are the Hidden Quantum Processes Behind Newton's Laws?

    E-Print Network [OSTI]

    Ostoma, T; Ostoma, Tom; Trushyk, Mike

    1999-01-01T23:59:59.000Z

    We investigate the hidden quantum processes that are responsible for Newton's laws of motion and Newton's universal law of gravity. We apply Electro-Magnetic Quantum Gravity or EMQG to investigate Newtonian classical physics. EQMG is a quantum gravity theory that is manifestly compatible with Cellular Automata (CA) theory, a new paradigm for physical reality. EMQG is also based on a theory of inertia proposed by R. Haisch, A. Rueda, and H. Puthoff, which we modified and called Quantum Inertia (QI). Quantum Inertia theory states that in Newton's 2nd law of motion (F=MA), inertia is caused by the strictly local electrical force interactions bewteen matter (ultimately composed of electrically charged quantum particles) and the surrounding electrically charged virtual particles of the quantum vacuum. When an electrically charged particle is accelerated, an electrical force results between the particle and the surrounding electrically charged virtual particles of the quantum vacuum appears in a direction to oppose...

  15. XMM-Newton Observations of AGN Iron Line Profiles

    E-Print Network [OSTI]

    James Reeves

    2002-11-18T23:59:59.000Z

    XMM-Newton observations of type I AGN are presented. The properties of the iron K emission line are reviewed, the majority of AGN observed by XMM-Newton show narrow, unresolved (by XMM) iron lines at 6.4 keV from cold matter that must originate far from the inner accretion disc, perhaps in the putative torus or outer broad line region. The strength of this narrow line appears to decrease with luminosity, implying a reduction in the covering fraction of this material in the more luminous quasars. Few examples of the broad, relativistic iron line profile have been found by XMM-Newton, although in MCG -6-30-15, the extreme breadth of the broad line component may imply a Kerr metric for the central black hole. Generally, relativistic Fe K line profiles are not required in a number of other Seyfert 1 X-ray spectra.

  16. Recirculating Beam Breakup Study for the 12 GeV Upgrade at Jefferson Lab

    SciTech Connect (OSTI)

    Ilkyoung Shin, Todd Satogata, Shahid Ahmed, Slawomir Bogacz, Mircea Stirbet, Haipeng Wang, Yan Wang, Byung Yunn, Ryan Bodenstein

    2012-07-01T23:59:59.000Z

    Two new high gradient C100 cryomodules with a total of 16 new cavities were installed at the end of the CEBAF south linac during the 2011 summer shutdown as part of the 12-GeV upgrade project at Jefferson Lab. We surveyed the higher order modes (HOMs) of these cavities in the Jefferson Lab cryomodule test facility and CEBAF tunnel. We then studied recirculating beam breakup (BBU) in November 2011 to evaluate CEBAF low energy performance, measure transport optics, and evaluate BBU thresholds due to these HOMs. This paper discusses the experiment setup, cavity measurements, machine setup, optics measurements, and lower bounds on BBU thresholds by new cryomodules.

  17. SPIN Effects, QCD, and Jefferson Laboratory with 12 GeV electrons

    SciTech Connect (OSTI)

    Prokudin, Alexey [JLAB

    2013-11-01T23:59:59.000Z

    QCD and Spin physics are playing important role in our understanding of hadron structure. I will give a short overview of origin of hadron structure in QCD and highlight modern understanding of the subject. Jefferson Laboratory is undergoing an upgrade that will increase the energy of electron beam up to 12 GeV. JLab is one of the leading facilities in nuclear physics studies and once operational in 2015 JLab 12 will be crucial for future of nuclear physics. I will briefly discuss future studies in four experimental halls of Jefferson Lab.

  18. Jefferson Lab imager can detect beginnings of breast tumors (Daily Press) |

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh SchoolIn12electron beam charges upJefferson Lab holdsJefferson

  19. Jefferson Lab to Conduct Active Threat Response Exercise on June 11 |

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh SchoolIn12electron beam charges upJefferson LabshippingJefferson

  20. Jefferson Lab to Hold Science Camp for Deaf and Hard-of-Hearing Youth, Aug.

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh SchoolIn12electron beam charges upJeffersonFriday |10-14 | Jefferson

  1. Jefferson Lab to Test New Siren Warning System on Tuesday Afternoon |

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh SchoolIn12electron beam charges upJeffersonFriday |10-14 |Jefferson

  2. Jefferson Lab's free-electron laser joins new research venture (Optics.org)

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh SchoolIn12electron beam charges upJeffersonFridayMarch 6| Jefferson

  3. Three Young Scientists Earn DOE Graduate Research Grants at Jefferson Lab |

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What'sis Taking Over OurThe Iron Spin Transition in2, 2003 (Next ReleaseThomas JeffersonJefferson Lab

  4. The Proton Form Factor Ratio Measurements at Jefferson Lab

    SciTech Connect (OSTI)

    Punjabi, Vina A. [Norfolk State University, Norfolk, VA (United States); Perdrisat, Charles F. [William and Mary College, Williamsburg, VA (United States)

    2014-03-01T23:59:59.000Z

    The ratio of the proton form factors, G{sub Ep}/G{sub Mp}, has been measured from Q{sup 2} of 0.5 GeV{sup 2} to 8.5 GeV{sup 2}, at the Jefferson Laboratory, using the polarization transfer method. This ratio is extracted directly from the measured ratio of the transverse and longitudinal polarization components of the recoiling proton in elastic electron-proton scattering. The discovery that the proton form factor ratio measured in these experiments decreases approximately linearly with four-momentum transfer, Q{sup 2}, for values above #25;~1 GeV{sup 2}, is one of the most significant results to come out of JLab. These results have had a large impact on progress in hadronic physics; and have required a significant rethinking of nucleon structure. The increasingly common use of the double-polarization technique to measure the nucleon form factors, in the last 15 years, has resulted in a dramatic improvement of the quality of all four nucleon electromagnetic form factors, G{sub Ep}, G{sub Mp}, G{sub En} and G{sub Mn}. There is an approved experiment at JLab, GEP(V), to continue the ratio measurements to 12 GeV{sup 2}. A dedicated experimental setup, the Super Bigbite Spectrometer (SBS), will be built for this purpose. It will be equipped with a focal plane polarimeter to measure the polarization of the recoil protons. The scattered electrons will be detected in an electromagnetic calorimeter. In this presentation, I will review the status of the proton elastic electromagnetic form factors and discuss a number of theoretical approaches to describe nucleon form factors.

  5. Mesh independent convergence of modified inexact Newton methods for second order nonlinear problems 

    E-Print Network [OSTI]

    Kim, Taejong

    2006-08-16T23:59:59.000Z

    In this dissertation, we consider modified inexact Newton methods applied to second order nonlinear problems. In the implementation of Newton's method applied to problems with a large number of degrees of freedom, it is often necessary to solve...

  6. Design and characterization of a nano-Newton resolution thrust stand J. Soni and S. Roy

    E-Print Network [OSTI]

    Roy, Subrata

    Design and characterization of a nano-Newton resolution thrust stand J. Soni and S. Roy Citation-Newton resolution thrust stand J. Soni and S. Roya) Applied Physics Research Group, University of Florida

  7. Jefferson Lab | Jefferson Lab

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

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  8. Jefferson Lab | Jefferson Lab

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOnItem NotEnergy, science,SpeedingWu,IntelligenceYou are hereNews item slideshow Detector

  9. The semismooth Newton method for multicomponent reactive transport with minerals

    E-Print Network [OSTI]

    Kraeutle, Serge

    is that problems containing CCs (so-called complementarity problems, CPs) are well known in the field of optimization theory. In this field, it is a well known strategy to solve CPs with the semismooth Newton method essential. The article is structured as follows. In Sec. 2.1 we introduce the mineral precipitation

  10. An Integrated Automatic Test Data Generation System A. Jefferson Offutt \\Lambda

    E-Print Network [OSTI]

    Offutt, Jeff

    An Integrated Automatic Test Data Generation System A. Jefferson Offutt \\Lambda Department of Computer Science Clemson University Clemson, SC 29634 January 21, 1996 Abstract The Godzilla automatic test data generator is an integrated collection of tools that implements a relatively new test data

  11. Title of Document: EMITTANCE MEASUREMENTS OF THE JEFFERSON LAB FREE ELECTRON LASER

    E-Print Network [OSTI]

    Anlage, Steven

    ABSTRACT Title of Document: EMITTANCE MEASUREMENTS OF THE JEFFERSON LAB FREE ELECTRON LASER USING, such as the ones that power Free Electron Lasers (FEL), require high quality (low emittance) beams for efficient to Free Electron Lasers............................................ 4 1.2.1 Basic Principles of an FEL

  12. EMPIRICALLY DETERMINED RESPONSE MATRICES FOR ON-LINE ORBIT AND ENERGY CORRECTION AT THOMAS JEFFERSON

    E-Print Network [OSTI]

    Accelerator Facility's (CEBAF) electron beam orbit and energy. Previous incarnations of these loops used digital feedback loops (less than 1 Hz update rate) to correct drifts in the Continuous Electron Beam JEFFERSON NATIONAL ACCELERATOR FACILITY* A. Hofler, D. Bryan , L. Harwood, M. Joyce, V. Lebedev , TJNAF

  13. 1 (blue. The orange problem is the same with 999 replaced by 555 ...

    E-Print Network [OSTI]

    2012-10-30T23:59:59.000Z

    1 (blue. The orange problem is the same with 999 replaced by 555). (a) Number of solutions (999+2. 2. ) Number of solutions with x = y = z. 1. (x = y = z = 333).

  14. Fractal and Wada exit basin boundaries in tokamaks Jefferson S. E. Portela, Iber^e L. Caldas

    E-Print Network [OSTI]

    Rey Juan Carlos, Universidad

    Fractal and Wada exit basin boundaries in tokamaks Jefferson S. E. Portela, Iber^e L. Caldas an involved fractal structure. If three or more exit basins are considered, the respective basins exhibit

  15. ORANGE. IDEAS. ORANGE. IDEAS.

    E-Print Network [OSTI]

    Grissino-Mayer, Henri D.

    and the energy found on our campus. The Office of Communications and Marketing--with the help of campus, is a place of energy. We're powered by our excellent students, our dedicated faculty and staff, and our Ideas." as the tagline that encapsulates UT's brand. This tagline and its related messages and visual

  16. Newton's cradle analogue with Bose-Einstein condensates

    E-Print Network [OSTI]

    Roberto Franzosi; Ruggero Vaia

    2014-03-20T23:59:59.000Z

    We propose a possible experimental realization of a quantum analogue of Newton's cradle using a configuration which starts from a Bose-Einstein condensate. The system consists of atoms with two internal states trapped in a one dimensional tube with a longitudinal optical lattice and maintained in a strong Tonks-Girardeau regime at maximal filling. In each site the wave function is a superposition of the two atomic states and a disturbance of the wave function propagates along the chain in analogy with the propagation of momentum in the classical Newton's cradle. The quantum travelling signal is generally deteriorated by dispersion, which is large for a uniform chain and is known to be zero for a suitably engineered chain, but the latter is hardly realizable in practice. Starting from these opposite situations we show how the coherent behaviour can be enhanced with minimal experimental effort.

  17. Mpemba effect, Newton cooling law and heat transfer equation

    E-Print Network [OSTI]

    Vladan Pankovic; Darko V. Kapor

    2012-12-11T23:59:59.000Z

    In this work we suggest a simple theoretical solution of the Mpemba effect in full agreement with known experimental data. This solution follows simply as an especial approximation (linearization) of the usual heat (transfer) equation, precisely linearization of the second derivation of the space part of the temperature function (as it is well-known Newton cooling law can be considered as the effective approximation of the heat (transfer) equation for constant space part of the temperature function).

  18. Horava-Lifshitz Gravity From Dynamical Newton-Cartan Geometry

    E-Print Network [OSTI]

    Jelle Hartong; Niels A. Obers

    2015-04-28T23:59:59.000Z

    Recently it has been established that torsional Newton-Cartan (TNC) geometry is the appropriate geometrical framework to which non-relativistic field theories couple. We show that when these geometries are made dynamical they give rise to Horava-Lifshitz (HL) gravity. Projectable HL gravity corresponds to dynamical Newton-Cartan (NC) geometry without torsion and non-projectable HL gravity corresponds to dynamical NC geometry with twistless torsion (hypersurface orthogonal foliation). We build a precise dictionary relating all fields (including the scalar khronon), their transformations and other properties in both HL gravity and dynamical TNC geometry. We use TNC invariance to construct the effective action for dynamical twistless torsional Newton-Cartan geometries in 2+1 dimensions for dynamical exponent 1Thompson as coming from the Bargmann extension of the local Galilean algebra that acts on the tangent space to TNC geometries. We argue that TNC geometry, which is manifestly diffeomorphism covariant, is a natural geometrical framework underlying HL gravity and discuss some of its implications.

  19. Overview Of Control System For Jefferson Lab`s High Power Free Electron Laser

    SciTech Connect (OSTI)

    Hofler, A. S.; Grippo, A. C.; Keesee, M. S.; Song, J.

    1997-12-31T23:59:59.000Z

    In this paper the current plans for the control system for Thomas Jefferson National Accelerator Facility`s (Jefferson Lab`s) Infrared Free Electron Laser (FEL) are presented. The goals for the FEL control system are fourfold: (1) to use EPICS and EPICS compatible tools, (2) to use VME and Industry Pack (IPs) interfaces for FEL specific devices such as controls and diagnostics for the drive laser, high power optics, photocathode gun and electron-beam diagnostics, (3) to migrate Continuous Electron Beam Accelerator Facility (CEBAF) technologies to VME when possible, and (4) to use CAMAC solutions for systems that duplicate CEBAF technologies such as RF linacs and DC magnets. This paper will describe the software developed for FEL specific devices and provide an overview of the FEL control system.

  20. ADVANTAGES OF THE PROGRAM-BASED LOGBOOK SUBMISSION GUI AT JEFFERSON LAB

    SciTech Connect (OSTI)

    T. McGuckin

    2006-10-24T23:59:59.000Z

    DTlite is a Tcl/Tk script that is used as the primary interface for making entries into Jefferson Lab's electronic logbooks. DTlite was originally written and implemented by a user to simplify submission of entries into Jefferson Lab?s electronic logbook, but has subsequently been maintained and developed by the controls software group. The use of a separate, script-based tool for logbook submissions (as opposed to a web-based submission tool bundled with the logbook database/interface) provides many advantages to the users, as well as creating many challenges to the programmers and maintainers of the electronic logbook system. The paper describes the advantages and challenges of this design model and how they have affected the development lifecycle of the electronic logbook system.

  1. OPERATION AND COMMISSIONING OF THE JEFFERSON LAB UV FEL USING AN SRF DRIVER ERL

    SciTech Connect (OSTI)

    R. Legg; S. Benson; G. Biallas; K. Blackburn; J. Boyce; D. Bullard; J. Coleman; C. Dickover; D. Douglas; F. Ellingsworth; P. Evtushenko; F. Hannon; C. Hernandez-Garcia; C. Gould; J. Gubeli; D. Hardy; K. Jordan; M. Klopf; J. Kortze; M. Marchlik; W. Moore; G. Neil; T. Powers; D. Sexton; Michelle D. Shinn; C. Tennant; R. Walker; G. Wilson

    2011-03-01T23:59:59.000Z

    We describe the operation and commissioning of the Jefferson Lab UV FEL using a CW SRF ERL driver. Based on the same 135 MeV linear accelerator as the Jefferson Lab 10 kW IR Upgrade FEL, the UV driver ERL uses a bypass geometry to provide transverse phase space control, bunch length compression, and nonlinear aberration compensation necessitating a unique set of commissioning and operational procedures. Additionally, a novel technique to initiate lasing is described. To meet these constraints and accommodate a challenging installation schedule, we adopted a staged commissioning plan with alternating installation and operation periods. This report addresses these issues and presents operational results from on-going beam operations.

  2. The red triangles are volcano locations. Dark-orange areas have a higher volcanic hazard; light-orange areas have a lower volcanic hazard. Dark-gray areas have a higher ash fall hazard;

    E-Print Network [OSTI]

    Torgersen, Christian

    The red triangles are volcano locations. Dark-orange areas have a higher volcanic hazard; light-orange areas have a lower volcanic hazard. Dark-gray areas have a higher ash fall hazard; light-gray areas have a lower ash fall hazard. Information is based on data during the past 10,000 years. Bottom, from left

  3. CONSTRUCTION GUIDE FOR FOOD FACILITIES County of Orange Health Care Agency/Regulatory Health Services/Environmental Health

    E-Print Network [OSTI]

    de Lijser, Peter

    CONSTRUCTION GUIDE FOR FOOD FACILITIES County of Orange Health Care Agency/Regulatory Health-6074 Fax (714) 433-6424 I. INTRODUCTION A. This Construction Guide is available to any person intending to construct or remodel a food facility in Orange County. It is intended to serve as a general overview

  4. Investigating the Site of Newton's Laboratory in Trinity College, Cambridge

    E-Print Network [OSTI]

    Spargo, P E

    was usually produced from hardwoods such as oak, is that when used as a fuel it generates only a very small quantity of ash — as opposed to coal, which, depending of course upon its quality, frequently produces a substantial amount of ash. Seventeenth... of the laboratory as well as that of the rubbish pit in which Newton would have disposed of the waste materials generated in his chemical experiments. The results are believed to be of sufficient interest to justify continuation of the investigation. Historical...

  5. Jasper-Newton Elec Coop, Inc | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to: navigation, searchOf Kilauea Volcano, Hawaii | Wind Farm JumpJamestown,Jasper-Newton Elec

  6. Newton County Rural E M C | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere I Geothermal Pwer PlantMunhall, Pennsylvania:Information296593°,Newcastle,NewNewport,Newton County Rural

  7. Newton County, Arkansas: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere I Geothermal Pwer PlantMunhall, Pennsylvania:Information296593°,Newcastle,NewNewport,Newton County

  8. Newton County, Georgia: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere I Geothermal Pwer PlantMunhall, Pennsylvania:Information296593°,Newcastle,NewNewport,Newton

  9. Newton County, Indiana: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere I Geothermal Pwer PlantMunhall, Pennsylvania:Information296593°,Newcastle,NewNewport,NewtonIndiana:

  10. Newton, New Hampshire: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere I Geothermal Pwer PlantMunhall,Missouri: Energy Resources Jump to: navigation, searchNewton, New Hampshire:

  11. City of Newton Falls, Ohio (Utility Company) | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand JumpConceptual Model, clickInformation Smyrna Beach, Florida (Utility Company) JumpNewton Falls,

  12. City of Newton, Texas (Utility Company) | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand JumpConceptual Model, clickInformation Smyrna Beach, Florida (Utility Company) JumpNewton

  13. The XMM-Newton Wide Angle Survey (XWAS)

    E-Print Network [OSTI]

    Esquej, P; Carrera, F J; Mateos, S; Tedds, J; Watson, M G; Corral, A; Ebrero, J; Krumpe, M; Rosen, S R; Ceballos, M T; Schwope, A; Page, C; Alonso-Herrero, A; Caccianiga, A; Della Ceca, R; Gonzalez-Martín, O; Lamer, G; Severgnini, P

    2013-01-01T23:59:59.000Z

    This programme is aimed at obtaining one of the largest X-ray selected samples of identified active galactic nuclei to date in order to characterise such a population at intermediate fluxes, where most of the Universe's accretion power originates. We present the XMM-Newton Wide Angle Survey (XWAS), a new catalogue of almost a thousand X-ray sources spectroscopically identified through optical observations. A sample of X-ray sources detected in 68 XMM-Newton pointed observations was selected for optical multi-fibre spectroscopy. Optical counterparts and corresponding photometry of the X-ray sources were obtained from the SuperCOSMOS Sky Survey. Candidates for spectroscopy were initially selected with magnitudes down to R~21, with preference for X-ray sources having a flux F(0.5-4.5 keV) >10^-14 erg s^-1 cm^-2. Optical spectroscopic observations performed at the Anglo Australian Telescope Two Degree Field were analysed, and the derived spectra were classified based on optical emission lines. We have identified ...

  14. Modified Newton's law, braneworlds, and the gravitational quantum well

    E-Print Network [OSTI]

    F. Buisseret; B. Silvestre-Brac; V. Mathieu

    2007-01-18T23:59:59.000Z

    Most of the theories involving extra dimensions assume that only the gravitational interaction can propagate in them. In such approaches, called brane world models, the effective, 4-dimensional, Newton's law is modified at short as well as at large distances. Usually, the deformation of Newton's law at large distances is parametrized by a Yukawa potential, which arises mainly from theories with compactified extra dimensions. In many other models however, the extra dimensions are infinite. These approaches lead to a large distance power-law deformation of the gravitational newtonian potential $V_N(r)$, namely $V(r)=(1+k_b/r^b)V_N(r)$, which is less studied in the literature. We investigate here the dynamics of a particle in a gravitational quantum well with such a power-law deformation. The effects of the deformation on the energy spectrum are discussed. We also compare our modified spectrum to the results obtained with the GRANIT experiment, where the effects of the Earth's gravitational field on quantum states of ultra cold neutrons moving above a mirror are studied. This comparison leads to upper bounds on $b$ and $k_b$.

  15. Newton-conjugate-gradient methods for solitary wave computations Jianke Yang

    E-Print Network [OSTI]

    Yang, Jianke

    Newton-conjugate-gradient methods for solitary wave computations Jianke Yang Department's method Conjugate-gradient methods a b s t r a c t In this paper, the Newton-conjugate-gradient methods the linearization operator is self-adjoint, the preconditioned conjugate-gradient method is pro- posed to solve

  16. FAST DAMPED GAUSS-NEWTON ALGORITHM FOR SPARSE AND NONNEGATIVE TENSOR FACTORIZATION

    E-Print Network [OSTI]

    Cichocki, Andrzej

    Terms-- canonical polyadic decomposition (CP), nonnegative tensor factorization, Gauss-Newton, LevenbergFAST DAMPED GAUSS-NEWTON ALGORITHM FOR SPARSE AND NONNEGATIVE TENSOR FACTORIZATION Anh Huy Phan for canonical polyadic decomposition (with/without nonnegative constraints) often accompany update rules

  17. CLINICAL VOLUNTEER PROGRAMS Children's Hospital of Orange County/ commitment = 100 hours

    E-Print Network [OSTI]

    Barrett, Jeffrey A.

    CLINICAL VOLUNTEER PROGRAMS Children's Hospital of Orange County/ commitment = 100 hours 455 S Hospital Clinical Care Extender Program/ACCEPTING APPLICATIONS NOW INTERVIEWING THROUGH MARCH 26TH 1 Hoag-4 departments Telephone 949 764-5740 Applications every three months http://www.hoag.org/volunteering/clinical

  18. Improving the photostability of bright monomeric orange and red fluorescent proteins

    E-Print Network [OSTI]

    Tsien, Roger Y.

    Improving the photostability of bright monomeric orange and red fluorescent proteins Nathan C illumination. Although fluorescent proteins typically bleach at a substantially slower rate than many small-molecule dyes, in many cases the lack of sufficient photostability remains an important limiting factor

  19. Hybrid Energy Cell for Degradation of Methyl Orange by Self-Powered Electrocatalytic Oxidation

    E-Print Network [OSTI]

    Wang, Zhong L.

    Hybrid Energy Cell for Degradation of Methyl Orange by Self- Powered Electrocatalytic Oxidation Ya of superoxidative hydroxyl radical on the anode. Here, we report a hybrid energy cell that is used for a self-powered electrocatalytic process for the degradation of MO without using an external power source. The hybrid energy cell

  20. Understanding the Optical Band Shape: Coumarin-153 Steady-State Spectroscopy Dmitry V. Matyushov*, and Marshall D. Newton*,

    E-Print Network [OSTI]

    Matyushov, Dmitry

    *, and Marshall D. Newton*, Department of Chemistry and Biochemistry, Arizona State UniVersity, P.O. Box 871604

  1. Characteristics and fabrication of a 499 MHz superconducting deflecting cavity for the Jefferson Lab 12 geV Upgrade

    SciTech Connect (OSTI)

    HyeKyoung Park, S.U. De Silva, J.R. Delayen

    2012-07-01T23:59:59.000Z

    A 499 MHz parallel bar superconducting deflecting cavity has been designed and optimized for a possible implementation at the Jefferson Lab. Previously the mechanical analysis, mainly stress, was performed. Since then pressure sensitivity was studied further and the cavity parts were fabricated. The prototype cavity is not completed due to the renovation at Jefferson Lab which resulted in the temporary shutdown of the electron beam welding facility. This paper will present the analysis results and facts encountered during fabrication. The unique geometry of the cavity and its required mechanical strength present interesting manufacturing challenges.

  2. Jefferson Lab to Conduct Test of its Tornado Warning Siren at 10:30 a.m. on

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  3. Jefferson Lab to Conduct Test of its Tornado Warning Siren at 10:30 a.m. on

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    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh SchoolIn12electron beam charges upJeffersonFriday | Jefferson

  4. Jefferson Lab to Conduct Test of its Tornado Warning Siren at 10:30 a.m. on

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  5. Jefferson Lab to Conduct Test of its Tornado Warning Siren at 10:30 a.m. on

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    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh SchoolIn12electron beam charges upJeffersonFriday | JeffersonFriday

  6. Jefferson Lab to Test its Tornado Warning Siren at 10:30 a.m. on Friday,

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    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh SchoolIn12electron beam charges upJeffersonFridayMarch 6 | Jefferson

  7. FMEA on the superconducting torus for the Jefferson Lab 12 GeV accelerator upgrade

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

    Ghoshal, Probir K.; Biallas, George H.; Fair, Ruben J.; Rajput-Ghoshal, Renuka; Schneider, William J.; Legg, Robert A.; Kashy, David H.; Hogan, John P.; Wiseman, Mark A.; Luongo, Cesar; et al

    2015-06-01T23:59:59.000Z

    As part of the Jefferson Lab 12GeV accelerator upgrade project, Hall B requires two conduction cooled superconducting magnets. One is a magnet system consisting of six superconducting trapezoidal racetrack-type coils assembled in a toroidal configuration and the second is an actively shielded solenoidal magnet system consisting of 5 coils. Both magnets are to be wound with Superconducting Super Collider-36 NbTi strand Rutherford cable soldered into a copper channel. This paper describes the various failure modes in torus magnet along with the failure modes that could be experienced by the torus and its interaction with the solenoid which is located inmore »close proximity.« less

  8. The 3D structure of the hadrons: recents results and experimental program at Jefferson Lab

    SciTech Connect (OSTI)

    Munoz Camacho, Carlos [Institut de Physique Nucleaire, Orsay

    2014-04-01T23:59:59.000Z

    The understanding of Quantum Chromodynamics (QCD) at large distances still remains one of the main outstanding problems of nuclear physics. Studying the internal structure of hadrons provides a way to probe QCD in the non-perturbative domain and can help us unravel the internal structure of the most elementary blocks of matter. Jefferson Lab (JLab) has already delivered results on how elementary quarks and gluons create nucleon structure and properties. The upgrade of JLab to 12 GeV will allow the full exploration of the valence-quark structure of nucleons and the extraction of real threedimensional pictures. I will present recent results and review the future experimental program at JLab.

  9. The Forward Tagger facility for low Q{sup 2} experiments at Jefferson Laboratory

    SciTech Connect (OSTI)

    Celentano, Andrea [INFN-GENOVA

    2014-06-01T23:59:59.000Z

    Low Q{sup 2} electron scattering is an efficient and competitive experimental technique to provide intense, quasi-real photon beams, with a high degree of linear polarization. Such a technique will be employed in Hall B at Jefferson Laboratory by having the primary 11?GeV electron beam from the CEBAF accelerator impinging on a liquid hydrogen target. Low-angle scattered electrons will be detected with the new Forward Tagger facility, while the final state hadrons will be measured with the CLAS12 spectrometer. The unique combination of the two detectors will permit to carry out a broad physics program, and to explore new possibilities for high quality physics.

  10. The GlueX experiment: Search for gluonic excitations via photoproduction at Jefferson Lab

    SciTech Connect (OSTI)

    Eugenio, Paul [Florida State U.

    2013-07-01T23:59:59.000Z

    Studies of meson spectra via strong decays provide insight regarding QCD at the confinement scale. These studies have led to phenomenological models for QCD such as the constituent quark model. However, QCD allows for a much richer spectrum of meson states which include extra states such as exotics, hybrids, multi-quarks, and glueballs. First discussion of the status of exotic meson searches is given followed by an overview of the progress at Jefferson Lab to double the energy of the machine to 12 GeV, which will allow us to access photoproduction of mesons in search for gluonic excited states.

  11. Upgraded photon calorimeter with integrating readout for Hall A Compton Polarimeter at Jefferson Lab

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

    Friend, M; Benmokhtar, F; Camsonne, A; Dalton, M; Franklin, G B; Mamyan, V; Michaels, R; Nanda, S; Nelyubin, V; Paschke, K; Quinn, B; Rakhman, A; Souder, P

    2012-06-01T23:59:59.000Z

    The photon arm of the Compton polarimeter in Hall A of Jefferson Lab has been upgraded to allow for electron beam polarization measurements with better than 1% accuracy. The data acquisition system (DAQ) now includes an integrating mode, which eliminates several systematic uncertainties inherent in the original counting-DAQ setup. The photon calorimeter has been replaced with a Ce-doped Gd2SiO5 crystal, which has a bright output and fast response, and works well for measurements using the new integrating method at electron beam energies from 1 to 6 GeV.

  12. Beam Line Commissioning of a UV/VUV FEL at Jefferson Lab

    SciTech Connect (OSTI)

    Benson, Stephen; Blackburn, Keith; Bullard, Daniel; Clavero Perez, Cesar; Coleman, James; Dickover, Cody; Douglas, David; Ellingsworth, Forrest; Evtushenko, Pavel; Hernandez-Garcia, Carlos; Gould, Christopher; Gubeli, Joseph; Hardy, David; Jordan, Kevin; Klopf, John; James, Kortze; Legg, Robert; Marchlik, Matthew; Moore, Steven; Neil, George; Powers, Thomas; Sexton, Daniel; Shinn, Michelle D; Tennant, Christopher; Walker, Richard; Williams, Gwyn; Wilson, Frederick

    2011-08-01T23:59:59.000Z

    Many novel applications in photon sciences require very high brightness and/or short pulses in the vacuum ultra-violet (VUV). Jefferson Lab has commissioned a UV oscillator with high gain and has transported the third harmonic of the UV to a user lab. The experimental performance of the UV FEL is much better than simulated performance in both gain and efficiency. This success is important for efforts to push towards higher gain FELs at short wavelengths where mirrors absorb strongly. We will report on efforts to characterize the UV laser and the VUV coherent harmonics as well as designs to lase directly in the VUV wavelength range.

  13. Jefferson Lab to host open house May 19 (Inside Newport News Central) |

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  14. Jefferson Lab, a forefront U.S. Department of Energy nuclear physics research fa

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  15. JLab to Test Tornado Warning Siren on Friday Morning | Jefferson Lab

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  16. JLab to Test Tornado Warning Siren on Friday Morning | Jefferson Lab

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  17. JLab's 12 GeV Upgrade Project Clears Critical Hurdle | Jefferson Lab

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  18. JLab's YouTube Channel Attracts 100,000 Subscribers | Jefferson Lab

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  19. JSA Initiatives Fund Call for Proposals Deadline: July 31, 2015 | Jefferson

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  20. Jefferson Lab Hosts 20 Teams for Middle School Science Bowl on March 1 |

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  1. Jefferson Lab Hosts 23 Teams for Middle School Science Bowl on March 7 |

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  2. Jefferson Lab Hosts Virginia Middle School Science Bowl on March 1 |

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  3. Jefferson Lab Invites Classes, Groups to 2008-2009 Physics Fests |

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  4. Jefferson Lab Signs Contract Wth SensL For Silicon Photomultiplier

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  5. Jefferson Lab Website Offers Help For Virginia Standards of Learning Tests

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  6. Jefferson Lab creates better way to discover breast cancer (Daily Press) |

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  7. Jefferson Lab employee invents low-tech gizmo to protect high-tech devices

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  8. Jefferson Lab gets federal stimulus funding (WVVA-TV & Associated Press) |

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  9. Jefferson Lab hosts 19 schools for Virginia Regional High School Science

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  10. Jefferson Lab leads the way toward clean cavities (Cryogenic Society of

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh SchoolIn12electron beam charges upJefferson Labshipping needs

  11. Jefferson Lab plans ‘Celebration of Science’ Open House for May

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

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  12. Jefferson Lab plans ‘Science is Cool’ Open House for Saturday,

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

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  13. Jefferson Lab scientist puts intriguing view on spin of the proton |

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  14. Jefferson Lab to Mark the End of CEBAF 6 GeV Operations on May 18 |

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

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  15. Jefferson Lab to Test its Tornado Siren at 9:45 a.m. Tuesday During

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

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  16. Jefferson Lab's Annual Property Inventory Will Take Place June 1 - July

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

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  17. Jefferson Lab's Free-Electron Laser Joins With Others in New Research

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

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  18. Jefferson Lab's Good Performance Leads To Contract Extension with U.S.

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

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  19. Jefferson Lab: A world-class facility to study nuclear physics (Daily

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

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  20. Jefferson Lab: Laser gun to eventually shoot down missiles (Daily Press) |

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

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  1. Un'italiana a capo della fisica del Jefferson Lab (ANSA.IT, Scienza &

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

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  2. Stimulus money will update Jefferson Lab, create jobs (The Virginian-Pilot)

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

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  3. SLAC-Built Detector Prepares for Life at Jefferson Lab (SLAC News Center) |

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

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  4. CEBAF Center F Wing Closed on Saturday, June 27 | Jefferson Lab

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

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  5. Thomas Jefferson Site Office EA / EIS | U.S. DOE Office of Science (SC)

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  6. Thomas Jefferson National Accelerator Facility | U.S. DOE Office of Science

    Office of Science (SC) Website

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  7. Thomas Jefferson National Accelerator Facility | U.S. DOE Office of Science

    Office of Science (SC) Website

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  8. Thomas Jefferson National Accelerator Facility | U.S. DOE Office of Science

    Office of Science (SC) Website

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  9. March 2 Speaker at Jefferson Lab Discusses Restoration of the USS Monitor |

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  10. Torsional Newton-Cartan Geometry and Lifshitz Holography

    E-Print Network [OSTI]

    Morten H. Christensen; Jelle Hartong; Niels A. Obers; Blaise Rollier

    2014-09-19T23:59:59.000Z

    We obtain the Lifshitz UV completion in a specific model for z=2 Lifshitz geometries. We use a vielbein formalism which enables identification of all the sources as leading components of well-chosen bulk fields. We show that the geometry induced from the bulk onto the boundary is a novel extension of Newton-Cartan geometry with a specific torsion tensor. We explicitly compute all the vevs including the boundary stress-energy tensor and their Ward identities. After using local symmetries/Ward identities the system exhibits 6+6 sources and vevs. The FG expansion exhibits, however, an additional free function which is related to an irrelevant operator whose source has been turned off. We show that this is related to a second UV completion.

  11. Jefferson Lab IEC 61508/61511 Safety PLC Based Safety System

    SciTech Connect (OSTI)

    Kelly Mahoney, Henry Robertson

    2009-10-01T23:59:59.000Z

    This paper describes the design of the new 12 GeV Upgrade Personnel Safety System (PSS) at the Thomas Jefferson National Accelerator Facility (TJNAF). The new PSS design is based on the implementation of systems designed to meet international standards IEC61508 and IEC 61511 for programmable safety systems. In order to meet the IEC standards, TJNAF engineers evaluated several SIL 3 Safety PLCs before deciding on an optimal architecture. In addition to hardware considerations, software quality standards and practices must also be considered. Finally, we will discuss R&D that may lead to both high safety reliability and high machine availability that may be applicable to future accelerators such as the ILC. Key words: PLC, Safety, TJNAF, SIL, PSS, PPS, Software, ILC Notice: Authored by Jefferson Science Associates, LLC under U.S. DOE Contract No. DE-AC05-06OR23177. The U.S. Government retains a non-exclusive, paid-up, irrevocable, world-wide license to publish or reproduce this manuscript for U.S. Government purposes.

  12. Baryon Resonances in the Double Pion Channel at Jefferson Lab (CEBAF): Experimental and Physical Analysis Status and Perspectives

    E-Print Network [OSTI]

    Marco Ripani

    1999-02-18T23:59:59.000Z

    Decay of light quark excited baryons in the double pion channel is discussed, as a particular way of investigating poorly know baryon resonances and searching for "missing states" predicted by quark models. A possible approach to the data analysis is discussed and some preliminary data from the CLAS collaboration at Jefferson Laboratory are presented.

  13. The EMC Effect in Spin Structure Functions A 12 GeV letter of intent to Jefferson Lab PAC 35

    E-Print Network [OSTI]

    Gilfoyle, Jerry

    The EMC Effect in Spin Structure Functions A 12 GeV letter of intent to Jefferson Lab PAC 35-dependent EMC effect uti- lizing CLAS12 in Hall B. We will polarize 7 Li, in which a highly polarized proton|7Li 1 in a range of 2 EMC effect emphasizes

  14. An archaeological survey of the Proposed Natural Gas Pipeline Location Tie-in in Orange County, Texas

    E-Print Network [OSTI]

    Moore, William

    2015-06-16T23:59:59.000Z

    An archaeological investigation of approximately 1000 feet of a proposed 22,000 foot natural gas pipeline in southeastern Orange County, Texas was performed by Brazos Valley Research Associates of Bryan, Texas in August 2001. No archaeological sites...

  15. NRRI summary of New York Public Service Commission: Staff investigation of Orange and Rockland Utilities, Inc.

    SciTech Connect (OSTI)

    NONE

    1995-12-31T23:59:59.000Z

    In June 1995, the New York Public Service Commission (NYPSC) released a Staff investigation of Orange and Rockland Utilities, Inc. (O&R). The primary focus of the Staffs investigation was the Corporate Policy and External Affairs Department, a restricted disbursements account, the Internal Auditing Department, and O&R officer malfeasance. The Staffs` investigation uncovered widespread, alleged instances of lax internal controls, unethical and illegal actions, and lavish officer behavior. In addition, the Staff investigated O&R`s internal control and purchasing functions. The Staff proposed a series of recommendations to improve the Company`s internal control, purchasing, ethical, climate and addressed the issue of a New York ratepayer reimbursement. The Staffs findings and recommendations were presented in the form of a report, entitled Staff Investigation of Orange and Rockland Utilities, Inc. This article summarizes the Report.

  16. A Full-Newton Step O(n) Infeasible Interior-Point Algorithm for Linear ...

    E-Print Network [OSTI]

    2005-02-19T23:59:59.000Z

    Feb 5, 2005 ... ... which is the working horse in all IPMs. 2 .... Of course, system (3) is still hard to solve, but by applying Newton's method one can easily find ...

  17. THE GAS DYNAMICS OF NGC 4472 REVEALED BY XMM-NEWTON

    E-Print Network [OSTI]

    Kraft, R. P.

    We present results from a 100 ks XMM-Newton observation of the hot gas in the Virgo cluster elliptical galaxy NGC 4472. We find a surface brightness discontinuity ~21 kpc north of the nucleus, consistent with being a contact ...

  18. All roads lead to Newton: Feasible second-order methods for ...

    E-Print Network [OSTI]

    2009-08-31T23:59:59.000Z

    Aug 31, 2009 ... The reason for the title, “All roads lead to Newton”, is that this paper extends and ... per saecula Romam” or “a thousand roads lead men forever.

  19. Spectra of disc operator for twisted acceleration-enlarged Newton-Hooke space-times

    E-Print Network [OSTI]

    Marcin Daszkiewicz

    2011-01-10T23:59:59.000Z

    The time-dependent spectra of disc area operator for twisted acceleration-enlarged Newton-Hooke space-times are derived. It is demonstrated that the corresponding area quanta are expanding or oscillating in time.

  20. Derivation of Newton's Law of Gravitation Based on a Fluid Mechanical Singularity Model of Particles

    E-Print Network [OSTI]

    Xiao-Song Wang

    2006-10-25T23:59:59.000Z

    We speculate that the universe may be filled with a kind of fluid which may be called aether or tao. Thus, Newton's law of gravitation is derived by methods of hydrodynamics based on a sink flow model of particles.

  1. ISIS polarimetry for ING support astronomers Isaac Newton Group of Telescopes

    E-Print Network [OSTI]

    ISIS polarimetry for ING support astronomers Isaac Newton Group of Telescopes Pablo Rodr 0.1 Document history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1 ISIS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 1.2 Setting up ISIS for spectropolarimetry . . . . . . . . . . . . . . . . . . . . . 4 1

  2. A quasi-Newton strategy for the sSQP method for variational ...

    E-Print Network [OSTI]

    2011-09-12T23:59:59.000Z

    Page 1 ... The main topic of this work is the study of a quasi-Newton version of the method introduced in [8] to solve problem (1). This method is an adaptation of.

  3. Dynamically polarized target for the gp2 and GpE experiments at Jefferson Lab

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

    Pierce, Joshua J. [JLAB, Newport News, VA (United States); Maxwell, James D. [MIT, Amherst, MA (United States); Badman, Toby E. [Univ. of New Hampshire, Durham, NH (United States); Brock, James D. [JLAB, Newport News, VA (United States); Carlin, Christopher R. [JLAB, Newport News, VA (United States); Crabb, Donald G. [Univ. of Virginia, Charlottesville, VA (United States); Day, Donal B. [Univ. of Virginia, Charlottesville, VA (United States); Keith, Christopher D. [JLAB, Newport News, VA (United States); Kvaltine, Nicholas D. [Univ. of Virginia, Charlottesville, VA (United States); Meekins, David G. [JLAB, Newport News, VA (United States); Mulholland, Jonathan R.L. [Univ. of Tennessee, Knoxville, TN (United States); Shields, Joshua A. [Univ. of Virginia, Charlottesville, VA (United States); Slifer, Karl J. [Univ. of New Hampshire, Durham, NH (United States)

    2014-02-01T23:59:59.000Z

    We describe a dynamically polarized target that has been utilized for two electron scattering experiments in Hall A at Jefferson Lab. The primary components of the target are a new, high cooling power 4 He evaporation refrigerator, and a re-purposed, superconducting split-coil magnet. It has been used to polarize protons in irradiated NH3 at a temperature of 1 K and at fields of 2.5 and 5.0 Tesla. The performance of the target material in the electron beam under these conditions will be discussed. Maximum polarizations of 28% and 95% were obtained at those fields, respectively. To satisfy the requirements of both experiments, the magnet had to be routinely rotated between angles of 0, 6, and 90 degrees with respect to the incident electron beam. This was accomplished using a new rotating vacuum seal which permits rotations to be performed in only a few minutes.

  4. Status report on Jefferson Lab`s high-power infrared free-electron laser

    SciTech Connect (OSTI)

    Bohn, C.L. [Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)

    1997-10-01T23:59:59.000Z

    Jefferson Lab is building a free-electron laser to produce tunable, continuous-wave (cw), kW-level light at 3-6 {mu}m wavelength. A superconducting accelerator will drive the laser, and a transport lattice will recirculate the beam back through the accelerator for energy recovery. Space charge in the injector and coherent synchrotron radiation in magnetic bends will be present, and the machine is instrumented to study these phenomena during commissioning. The wiggler and optical cavity are conventional; however, significant analysis and testing was needed to ensure mirror heating at 1 kW of outcoupled power would not impede performance. The FEL is being installed in its own facility, and installation will be finished in Fall 1997. This paper surveys the machine, the status of its construction, and plans for its commissioning.

  5. The neutron skin in neutron-rich nuclei at Jefferson Lab

    SciTech Connect (OSTI)

    Dalton, Mark M. [University of Virginia (United States)

    2013-11-07T23:59:59.000Z

    The Jefferson Lab program to measure the symmetry energy of neutron-rich nuclear matter, using precision electroweak methods, is progressing well. The initial measurement by the PREX experiment, leading to a 2-sigma determination of the 'neutron skin' in {sup 208}Pb, has been published. Design and preparation for a further, more-precise measurement on {sup 208}Pb is progressing well and there is general acceptance of the great advantage to a further measurement on {sup 48}Ca. The surprising ancillary result that the beam-normal single-spin asymmetry for {sup 208}Pb is consistent with zero is also now in the literature. This paper will discuss the current experimental situation of the program.

  6. The New 2nd-Generation SRF R&D Facility at Jefferson Lab: TEDF

    SciTech Connect (OSTI)

    Reece, Charles E.; Reilly, Anthony V.

    2012-09-01T23:59:59.000Z

    The US Department of Energy has funded a near-complete renovation of the SRF-based accelerator research and development facilities at Jefferson Lab. The project to accomplish this, the Technical and Engineering Development Facility (TEDF) Project has completed the first of two phases. An entirely new 3,100 m{sup 2} purpose-built SRF technical work facility has been constructed and was occupied in summer of 2012. All SRF work processes with the exception of cryogenic testing have been relocated into the new building. All cavity fabrication, processing, thermal treatment, chemistry, cleaning, and assembly work is collected conveniently into a new LEED-certified building. An innovatively designed 800 m2 cleanroom/chemroom suite provides long-term flexibility for support of multiple R&D and construction projects as well as continued process evolution. The characteristics of this first 2nd-generation SRF facility are described.

  7. Options for an 11 GeV RF Beam Separator for the Jefferson Lab CEBAF Upgrade

    SciTech Connect (OSTI)

    Jean Delayen, Michael Spata, Haipeng Wang

    2009-05-01T23:59:59.000Z

    The CEBAF accelerator at Jefferson Lab has had, since first demonstration in 1996, the ability to deliver a 5-pass electron beam to experimental halls (A, B, and C) simultaneously. This capability was provided by a set of three, room temperature 499 MHz rf separators in the 5th pass beamline. The separator was two-rod, TEM mode type resonator, which has a high shunt impedance. The maximum rf power to deflect the 6 GeV beams was about 3.4kW. The 12 GeV baseline design does not preserve the capability of separating the 5th pass, 11 GeV beam for the 3 existing halls. Several options for restoring this capability, including extension of the present room temperature system or a new superconducting design in combination with magnetic systems, are under investigation and are presented.

  8. Coherent photoproduction of {pi}{sup +} from {sup 3}He with CLAS at Jefferson Lab

    SciTech Connect (OSTI)

    Nasseripour, Rakhsha; Berman, Barry [George Washington University, Washington, DC 20052 (United States)

    2011-10-24T23:59:59.000Z

    We have measured the differential cross section for the {gamma}{sup 3}He{yields}{pi}{sup +}t reaction. This reaction was studied using the CEBAF Large Acceptance Spectrometer (CLAS) at Jefferson Lab. Real photons produced with the Hall-B bremsstrahlung tagging system in the energy range from 0.5 to 1.55 GeV were incident on a cryogenic liquid {sup 3}He target. The differential cross sections for the {gamma}{sup 3}He{yields}{pi}{sup +}t reaction were measured as a function of photon-beam energy and pion-scattering angle. Theoretical predictions to date cannot explain the large cross sections except at backward angles, showing that additional components must be added to the model.

  9. Coherent photoproduction of pi+ from He-3 with CLAS at Jefferson Laboratory

    SciTech Connect (OSTI)

    Rakhsha Nasseripour, Barry Berman

    2011-09-01T23:59:59.000Z

    We have measured the differential cross section for the {gamma}{sup 3}He {yields} t{pi}{sup +} reaction. This reaction was studied using the CEBAF Large Acceptance Spectrometer (CLAS) at Jefferson Lab. Real photons produced with the Hall-B bremsstrahlung tagging system in the energy range from 0.5 to 1.55 GeV were incident on a cryogenic liquid {sup 3}He target. The differential cross sections for the {gamma}{sup 3}He {yields} i{pi}{sup +}t reaction were measured as a function of photon-beam energy and pion-scattering angle Theoretical predictions to date cannot explain the large cross sections except at backward angles, showing that additional components must be added to the model.

  10. An overview of the planned Jefferson Lab 12-GeV helium refrigerator upgrade

    SciTech Connect (OSTI)

    Arenius, Dana; Creel, Jonathan; Dixon, Kelly; Ganni, Venkatarao; Knudsen, Peter; Sidi-Yekhlef, Ahmed; Wright, Mathew

    2008-03-01T23:59:59.000Z

    In February 2006, Jefferson Laboratory in Newport News, VA, received â Critical Decision 1â (CD-1) approval to proceed with the engineering and design of the long anticipated upgrade to increase the beam energy of CEBAF, the Continuous Electron Beam Accelerator Facility, from 6 GeV to 12 GeV. This will require the installation of 10 new cryomodules, and additional 2.1-K refrigeration beyond the available 4600 W to handle the increased heat loads. Additionally, a new experimental hall, Hall D, is planned that will require the installation of a small, available refrigerator. This paper will present an overview of the integration of the new proposed refrigeration system into CEBAF, the installation of the available refrigerator for Hall D, and includes planned work scope, current schedule plans and project status.

  11. Scaling behavior in exclusive meson photoproduction from Jefferson Lab at large momentum transfers

    SciTech Connect (OSTI)

    Dey, Biplab [University of Zurich

    2014-07-01T23:59:59.000Z

    With the availability of new high-statistics and wide-angle measurements for several exclusive non-?N meson photoproduction channels from Jefferson Lab, we examine the fundamental scaling law of 90° scattering in QCD that was originally derived in the high-energy perturbative limit. The data show scaling to be prominently visible even in the medium-energy domain of 2.5 GeV ?s??2.84??GeV, where s? is the center-of-mass energy. While constituent quark exchange suffices for pseudoscalar mesons, additional gluon exchanges from higher Fock states of the hadronic wave functions appear be needed for vector-meson production. The case of the ?(1020), where two-gluon exchanges are known to dominate, is especially illuminating.

  12. Assessing environmental risk of the retired filter bed area, Battelle West Jefferson

    SciTech Connect (OSTI)

    Miller, S.F.; Thompson, M.D.; Glennon, M.A. [and others

    1997-04-01T23:59:59.000Z

    Initial investigations conducted by the U.S. Department of Energy, Chicago Operations Office, and by Argonne National Laboratory used seismic refraction profiling, electrical resistivity depth sounding, conductivity profiling, magnetic gradiometry, and ground-penetrating radar to study environmental geophysics in the area of the Battelle West Jefferson site`s radiologically contaminated retired filter beds. The investigators used a combination of nonintrusive technologies and innovative drilling techniques to assess environmental risk at the filter beds and to improve understanding of the geology of the Big Darby Creek floodplain. The geophysical investigation, which showed that the preferred groundwater pathway is associated with a laterally extensive deposit of silty sand to sand that is less than 12 ft deep in the floodplain area, also guided the location of cone penetrometer test sites and piezometer installation. Cone penetrometer testing was useful for comparing continuous logging data with surface geophysical data in establishing correlations among unconsolidated materials.

  13. Exploration of deeply virtual Compton scattering on the neutron in the Hall A of Jefferson Laboratory

    SciTech Connect (OSTI)

    Malek Mazouz

    2006-12-08T23:59:59.000Z

    Generalized Parton Distributions (GPDs) are universal functions which provide a comprehensive description of hadron properties in terms of quarks and gluons. Deeply Virtual Compton Scattering (DVCS) is the simplest hard exclusive process involving GPDs. In particular, the DVCS on the neutron is mostly sensitive to E, the less constrained GPD, wich allows to access to the quark angular momentum. The first dedicated DVCS experiment on the neutron ran in the Hall A of Jefferson Lab in fall 2004. The high luminosity of the experiment and the resulting background rate recquired specific devices which are decribed in this document. The analysis methods and the experiment results, leading to preliminary constraints on the GPD E, are presented.

  14. A proximity focusing RICH detector for kaon physics at Jefferson lab hall A

    SciTech Connect (OSTI)

    F. Garibaldi; E. Cisbani; S. Colilli; F. Cusanno; S. Frullani; R. Fratoni; F. Giuliani; M. Gricia; M. Iodice; M. Lucentini; L. Pierangeli; F. Santavenere; G.M. Urciuoli; P. Veneroni; G. De Cataldo; R. De Leo; L. Lagamba; E. Nappi; V. Paticchio; J. LeRose; B. Kross; B. Reitz; J. Segal; C. Zorn; H. Breuer

    2003-04-01T23:59:59.000Z

    Important information on the LN interaction can be obtained from High Resolution Hypernuclear Spectroscopy experiments with electromagnetic probes. A challenging experiment on electroproduction of hypernuclei is scheduled for 2003 in Hall A at Jefferson Lab. One of the challenges is the high performance particle identification system needed. The signal is expected to be rare compared to the very high pion and proton backgrounds due to the small electron and kaon detection angles. The ''standard'' Hall A PID apparatus (TOF and two aerogel threshold Cherenkov detectors) does not provide sufficient suppression of the background. Simulations and calculations have shown that a RICH detector would solve the problem. A proximity focusing fluorocarbon/CsI detector similar to the ALICE RICH detector has been designed, built, tested and commissioned. The results show that the detector performs as expected.

  15. Recent results on high resolution hypernuclear spectroscopy by electroproduction at Jefferson Lab, Hall A

    SciTech Connect (OSTI)

    F. Garibaldi; H. Breuer; P. Brindza; P. Bydzovski; G. Chang; E. Cisbani; S. Colilli; F. Cusanno; R. De Leo; G. De Cataldo; K. De Jager; R. Feuerbach; E. Folts; R. Fratoni; S. Frullani; F. Giuliani; M. Gricia; D. Higinbotham; M. Iodice; B. Kross; L. Lagamba; J.J.Le Rose; M. Lucentini; P. Markowitz; S. Marrone; R. Michaels; E. Nappi; Y. Qiang; B. Reitz; F. Santavenere; J. Segal; M. Sotona; G.M.Urciuoli; P. Veneroni; B.Wojtsekhowski; C. Zorn

    2005-12-01T23:59:59.000Z

    The first ''systematic'' study of 1 p shell hypernuclei with electromagnetic probes has started in Hall A at Jefferson Lab [?]. The aim is to perform hypernuclear high resolution spectroscopy by the electroproduction of strangeness on four 1p-shell targets: 12C, 9Be, 16O, 7Li. The first part of the experiment on 12C and 9Be has been performed in 2004, the second part (16O and 7Li) is scheduled for June 2005. To overcome the major experimental difficulties, namely the low counting rate and the challenging Particle IDentification (PID), two septum magnets and a Ring Imaging CHerenkov (RICH) detector had to be added to the existing apparatus. After underlining the particular role the electroproduction reaction plays in hypernuclear physics we describe the challenging modifications of the Hall A apparatus. Preliminary results on 12C and 9Be are presented.

  16. XMM-Newton study of 0.012thermodynamics

    E-Print Network [OSTI]

    A. Finoguenov; T. J. Ponman; J. P. F. Osmond; M. Zimer

    2006-11-29T23:59:59.000Z

    We study the thermodynamic properties of the hot gas in a sample of groups in the 0.012-0.024 redshift range, using XMM-Newton observations. We present measurements of temperature, entropy, pressure and iron abundance. Non-parametric fits are used to derive the mean properties of the sample and to study dispersion in the values of entropy and pressure. The scaling of the entropy at 0.2r500 matches well the results of Ponman et al. (2003). However, compared to cool clusters, the groups in our sample reveal larger entropy at inner radii and a substantially flatter slope in the entropy in the outskirts, compared to both the prediction of pure gravitational heating and to observations of clusters. This difference corresponds to the systematically flatter group surface brightness profiles, reported previously. The scaled pressure profiles can be well approximated with a Sersic model with n=4. We find that groups exhibit a systematically larger dispersion in pressure, compared to clusters of galaxies, while the dispersion in entropy is similar.

  17. New XMM-Newton observations of SNRs in the SMC

    E-Print Network [OSTI]

    Filipovic, M D; Winkler, P F; Pietsch, W; Payne, J L; Crawford, E J; De Horta, A Y; Stootman, F H; Reaser, B E

    2008-01-01T23:59:59.000Z

    A complete overview of the supernova remnant (SNR) population is required to investigate their evolution and interaction with the surrounding interstellar medium in the Small Magellanic Cloud (SMC). Recent XMM-Newton observations of the SMC cover three known SNRs (DEM S5, SNR B0050-72.8, and SNR B0058-71.8), which are poorly studied and are X-ray faint. We used new multi-frequency radio-continuum surveys and new optical observations at Ha, [SII], and [OIII] wavelengths, in combination with the X-ray data, to investigate their properties and to search for new SNRs in the SMC. We used X-ray source selection criteria and found one SMC object with typical SNR characteristics (HFPK 334), that was initially detected by ROSAT. We analysed the X-ray spectra and present multi-wavelength morphological studies of the three SNRs and the new candidate. Using a non-equilibrium ionisation collisional plasma model, we find temperatures kT around 0.18 keV for the three known remnants and 0.69 keV for the candidate. The low te...

  18. Newton-Cartan Gravity in Noninertial Reference Frames

    E-Print Network [OSTI]

    Leo Rodriguez; James St. Germaine-Fuller; Sujeev Wickramasekara

    2014-12-26T23:59:59.000Z

    We study properties of Newton-Cartan gravity under transformations into all noninertial, nonrelativistic reference frames. The set of these transformations has the structure of an infinite dimensional Lie group, called the Galilean line group, which contains as a subgroup the Galilei group. We show that the fictitious forces of noninertial reference frames are naturally encoded in the Cartan connection transformed under the Galilean line group. These noninertial forces, which are coordinate effects, do not contribute to the Ricci tensor which describes the curvature of Newtonian spacetime. We show that only the $00$-component of the Ricci tensor is non-zero and equal to ($4\\pi$ times) the matter density in any inertial or noninetial reference frame and that it leads to what may be called Newtonian ADM mass. While the Ricci field equation and Gauss law are both fulfilled by the same physical matter density in inertial and linearly accelerating reference frames, there appears a discrepancy between the two in rotating reference frames in that Gauss law holds for an effective mass density that differs from the physical matter density. This effective density has its origin in the simulated magnetic field that appears in rotating frames, highlighting a rather striking difference between linearly and rotationally accelerating reference frames. We further show that the dynamical equations that govern the simulated gravitational and magnetic fields have the same form as Maxwell's equations, a surprising conclusion given that these equations are well-known to obey special relativity (and $U(1)$-gauge symmetry), rather than Galilean symmetry.

  19. About Jefferson Lab | Jefferson Lab

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOnItem NotEnergy,ARMForms About Become agovEducationWelcome toAboutAbout GE GlobalA Target

  20. DarkLight: A Search for Dark Forces at the Jefferson Laboratory Free-Electron Laser Facility

    SciTech Connect (OSTI)

    Balewski, Jan; Bernauer, J.; Bertozzi, William; Bessuille, Jason; Buck, B.; Cowan, Ray; Dow, K.; Epstein, C.; Fisher, Peter; Gilad, Shalev; Ihloff, Ernest; Kahn, Yonatan; Kelleher, Aidan; Kelsey, J.; Milner, Richard; Moran, C.; Ou, Longwu; Russell, R.; Schmookler, Barak; Thaler, J.; Tschalar, C.; Vidal, Christopher; Winnebeck, A.; Benson, Stephen [JLAB; Gould, Christopher [JLAB; Biallas, George [JLAB; Boyce, James [JLAB; Coleman, James [JLAB; Douglas, David [JLAB; Ent, Rolf [JLAB; Evtushenko, Pavel [JLAB; Fenker, Howard [JLAB; Gubeli, Joseph [JLAB; Hannon, Fay [JLAB; Huang, Jia [JLAB; Jordan, Kevin [JLAB; Legg, Robert [JLAB; Marchlik, Matthew [JLAB; Moore, Steven [JLAB; Neil, George [JLAB; Shinn, Michelle D [JLAB; Tennant, Christopher [JLAB; Walker, Richard [JLAB; Williams, Gwyn [JLAB; Zhang, Shukui [JLAB; Freytsis, M.; Fiorito, Ralph; O'Shea, P.; Alarcon, Ricardo; Dipert, R.; Ovanesyan, G.; Gunter, Thoth; Kalantarians, Narbe; Kohl, M.; Albayrak, Ibrahim; Horn, Tanja; Gunarathne, D. S.; Martoff, C. J.; Olvitt, D. L.; Surrow, Bernd; Lia, X.; Beck, Reinhard; Schmitz, R.; Walther, D.; Brinkmann, K.; Zaunig, H.

    2014-05-01T23:59:59.000Z

    We give a short overview of the DarkLight detector concept which is designed to search for a heavy photon A' with a mass in the range 10 MeV/c^2 < m(A') < 90 MeV/c^2 and which decays to lepton pairs. We describe the intended operating environment, the Jefferson Laboratory free electon laser, and a way to extend DarkLight's reach using A' --> invisible decays.

  1. Overview and Lessons Learned of the Jefferson Lab Cryomodule Production for the CEBAF 12 GeV Upgrade

    SciTech Connect (OSTI)

    Hogan, John P. [JLAB; Burrill, Andrew B. [JLAB; Drury, Michael A. [JLAB; Harwood, Leigh H. [JLAB; Hovater, J. Curt [JLAB; Reece, Charles E. [JLAB; Wiseman, Mark A. [JLAB

    2013-12-01T23:59:59.000Z

    The Continuous Electron Beam Accelerator Facility (CEBAF) at Jefferson Lab is nearing completion of an energy upgrade from 6 to 12 GeV. An integral part of the upgrade is the addition of ten new cryomodules, each consisting of eight seven-cell superconducting radio-frequency (SRF) cavities. An average performance of 100+MV of acceleration per cryomodule is needed to achieve the 12 GeV beam energy goal. The production methodology was for industry to provide and deliver the major components to Jefferson Lab, where they were tested and assembled into cryomodules. The production process begins with an inspection upon receiving of all major components followed by individual performance qualification testing. The SRF cavities received their final chemical processing and cleaning at Jefferson Lab. The qualified components along with all associated hardware and instrumentation are assembled, tested, installed into CEBAF and run through an integrated system checkout in preparation for beam operations. The production process is complete and one of the first completed cryomodules has successfully produced 108 MV of acceleration with a linac beam current of 465 {micro}A.

  2. On approximations of the Schr\\"odinger-Newton equation by harmonic potentials

    E-Print Network [OSTI]

    Großardt, André

    2015-01-01T23:59:59.000Z

    The evolution of the, initially Gaussian, centre-of-mass wave-function for a homogeneous, spherical particle according to the Schr\\"odinger-Newton equation can be approximated by a harmonic potential, if the wave-function is narrow compared to the size of the particle. Here, the validity of a previously proposed approximation of the Schr\\"odinger-Newton equation is studied, where this is extended beyond the regime of narrow wave-functions, replacing the coupling constant of the harmonic potential by a function of the wave-function width. It turns out that such an extension beyond the narrow wave-function regime is not a good approximation for the self-gravitational evolution according to the Schr\\"odinger-Newton equation.

  3. XMM-Newton Studies of the Source Population and the Hot Interstellar Medium in Nearby Galaxies

    E-Print Network [OSTI]

    W. Pietsch

    2002-12-20T23:59:59.000Z

    First results of X-ray source population studies in nearby galaxies show the potential of XMM-Newton observations. I will report on first XMM-Newton M31 results and on three of our XMM-Newton projects, an X-ray source population study in the Magellanic Clouds (MCs), a deep raster survey of M33, and an investigation of the hot interstellar medium (ISM) in the halo of edge-on galaxies. XMM-Newton results on several other galaxies and sources within are presented by other authors in these proceedings. Our MC study is build up of deep pointings probing MC sources down to 10^33 erg s^-1 and shallower pointings to confirm candidates from our ROSAT derived lists of X-ray binaries, super-soft sources, and supernova remnants. First XMM-Newton detections of a 455 s pulsar in the Small Magellanic Cloud and the results of the Large Magellanic Cloud deep field confirm the validity of our strategy. Our M33 raster pointing aims for luminosities as low as 10^35 erg s^-1, a factor of 10 below the sensitivity limit of the ROSAT observations. The survey will allow us to characterize the sources using extent, spectra, hardness ratios and time variability to build up an unprecedented census of the X-ray source content of M33. Of specific interest are the active source in the nuclear area and the diffuse emission in the inner disk. XMM-Newton observations of the active galaxy NGC 3079 and of the starburst galaxy NGC 253 are used to characterize the point-like sources and the hot ISM in the disk and from the halo of these galaxies.

  4. A Beginner's Guide to Newton INTRODUCTION There are two main library catalogues currently in use, the online

    E-Print Network [OSTI]

    Keeler, James

    precise results, use a combination of search terms. Once the text has been entered you then need to select SEARCHING IN NEWTON A Newton Guided Search allows searching for combinations of search terms whilst below. This has three lines of boxes to enter the text you wish to search for. To retrieve the most

  5. The lead-glass electromagnetic calorimeters for the magnetic spectrometers in Hall C at Jefferson Lab

    E-Print Network [OSTI]

    H. Mkrtchyan; R. Carlini; V. Tadevosyan; J. Arrington; A. Asaturyan; M. E. Christy; D. Dutta; R. Ent; H. C. Fenker; D. Gaskell; T. Horn; M. K. Jones; C. E. Keppel; D. J. Mack; S. P. Malace; A. Mkrtchyan; M. I. Niculescu; J. Seely; V. Tvaskis; S. A. Wood; S. Zhamkochyan

    2012-04-28T23:59:59.000Z

    The electromagnetic calorimeters of the various magnetic spectrometers in Hall C at Jefferson Lab are presented. For the existing HMS and SOS spectrometers design considerations, relevant construction information, and comparisons of simulated and experimental results are included. The energy resolution of the HMS and SOS calorimeters is better than $\\sigma/E \\sim 6%/\\sqrt E $, and pion/electron ($\\pi/e$) separation of about 100:1 has been achieved in energy range 1 -- 5 GeV. Good agreement has been observed between the experimental and simulated energy resolutions, but simulations systematically exceed experimentally determined $\\pi^-$ suppression factors by close to a factor of two. For the SHMS spectrometer presently under construction details on the design and accompanying GEANT4 simulation efforts are given. The anticipated performance of the new calorimeter is predicted over the full momentum range of the SHMS. Good electron/hadron separation is anticipated by combining the energy deposited in an initial (preshower) calorimeter layer with the total energy deposited in the calorimeter.

  6. Study of Double Spin Asymmetries in Inclusive ep Scattering at Jefferson Lab

    SciTech Connect (OSTI)

    Kang, Hoyoung [Seoul National University, Seoul, Korea

    2014-08-01T23:59:59.000Z

    The spin structure of the proton has been investigated in the high Bjorken x and low momentum transfer Q^2 region. We used Jefferson Lab's polarized electron beam, a polarized target, and a spectrometer to get both the parallel and perpendicular spin asymmetries Apar and Aperp. These asymmetries produced the physics asymmetries A_1 and A_2 and spin structure functions g_1 and g_2. We found Q^2 dependences of the asymmetries at resonance region and higher-twist effects. Our result increases the available data on the proton spin structure, especially at resonance region with low Q^2. Moreover, A_2 and g_2 data show clear Q^2 evolution, comparing with RSS and SANE-BETA. Negative resonance in A_2 data needs to be examined by theory. It can be an indication of very negative transverse-longitudinal interference contribution at W ~ 1.3 GeV. Higher twist effect appears at the low Q^2 of 1.9 GeV^2, although it is less significant than lower Q^2 data of RSS. Twist03 matrix element d_2 was calculated using our asymmetry fits evaluation at Q^2 – 1.9 GeV^2. D-bar_2 = -0.0087±0.0014 was obtained by integrating 0.47 ? x ? 0.87.

  7. Overview of Nucleon Form Factor Experiments with 12 GeV at Jefferson Lab

    SciTech Connect (OSTI)

    Cisbani, Evaristo [INFN/Sanita, Roma, ITALY

    2014-06-01T23:59:59.000Z

    Since the R. Hofstadter pioneering experiments in the '50s, the measurements of the electromagnetic space-like nucleon form factors (FF's) have been a precious source of information for the understanding of the internal structure of the nucleons. In the last 15 years, the polarization transfer experiments at the Thomas Jefferson National Accelerator Facility (JLab) have undermined our view of the mechanism of the electron scattering and renewed critical interest in the FF measurements. In the coming years, JLab, with its upgraded 12 GeV polarized, high intensity, electron beam combined to new targets and readout equipments, will offer unprecedented opportunities to extend the current proton and neutron FF's measurements to higher momentum transfer Q{sup 2} and to improve statistical and uncertainties at lower Q{sup 2}, where the nucleon size can be accurately investigated. The measurements at high Q{sup 2} will provide also new insights on the elusive quark orbital angular momenta, will contribute to constraint two of the nucleon Generalized Parton Distributions that are expected to describe more consistently the nucleon structure, and in general will test the validity of quite a few fundamental nucleon models in a region of transition between perturbative and non perturbative regimes. A selection of the relevant properties of the FF's, and the main results of JLab are shortly reviewed; the new proposed and approved experiments on FF's at JLab are presented addressing some key details, the expected experimental achievements and the new equipment designed for them.

  8. The Meson Spectroscopy Program Using the Forward Tagger with CLAS12 at Jefferson Lab

    SciTech Connect (OSTI)

    Fegan, Stuart [INFN-GENOVA

    2014-11-01T23:59:59.000Z

    The 12 GeV upgrade to the Continuous Electron Beam Accelerator Facility (CEBAF) will enable a new generation of experiments in hadronic nuclear physics at Jefferson Lab, seeking to address fundamental questions in QCD. For example, confirming the existence of exotic states, suggested by both quark models and lattice calculations, would allow gluonic degrees of freedom to be explored, and may help explain the role played by gluons in the QCD interaction. In Experimental Hall B, meson spectroscopy (the MesonEx experiment) will be performed using low Q2 electron scattering to produce quasi-real photons. The scattered electron is detected at small angles by the Forward Tagger device, determining the properties of the photon on an event-by-event basis. This technique has notable advantages over real photon beams, and over hadronic beam experiments, where most experimental data exists. This article will focus on the development of the Forward Tagger by the INFN Genova group, and the proposed MesonEx experiment.

  9. Modeling exposure to depleted uranium in support of decommissioning at Jefferson Proving Ground, Indiana

    SciTech Connect (OSTI)

    Ebinger, M.H. [Los Alamos National Lab., NM (United States); Oxenburg, T.P. [Army Test and Evaluation Command, Aberdeen Proving Ground, MD (United States)

    1997-02-01T23:59:59.000Z

    Jefferson Proving Ground was used by the US Army Test and Evaluation Command for testing of depleted uranium munitions and closed in 1995 under the Base Realignment and Closure Act. As part of the closure of JPG, assessments of potential adverse health effects to humans and the ecosystem were conducted. This paper integrates recent information obtained from site characterization surveys at JPG with environmental monitoring data collected from 1983 through 1994 during DU testing. Three exposure scenarios were evaluated for potential adverse effects to human health: an occasional use scenario and two farming scenarios. Human exposure was minimal from occasional use, but significant risk were predicted from the farming scenarios when contaminated groundwater was used by site occupants. The human health risk assessments do not consider the significant risk posed by accidents with unexploded ordnance. Exposures of white-tailed deer to DU were also estimated in this study, and exposure rates result in no significant increase in either toxicological or radiological risks. The results of this study indicate that remediation of the DU impact area would not substantially reduce already low risks to humans and the ecosystem, and that managed access to JPG is a reasonable model for future land use options.

  10. Studies Of Coherent Synchrotron Radiation And Longitudinal Space Charge In The Jefferson Lab FEL Driver

    SciTech Connect (OSTI)

    Tennant, Christopher D. [JLAB; Douglas, David R. [JLAB; Li, Rui [JLAB; Tsai, C.-Y. [Virginia Polytechnic University

    2014-12-01T23:59:59.000Z

    The Jefferson Laboratory IR FEL Driver provides an ideal test bed for studying a variety of beam dynamical effects. Recent studies focused on characterizing the impact of coherent synchrotron radiation (CSR) with the goal of benchmarking measurements with simulation. Following measurements to characterize the beam, we quantitatively characterized energy extraction via CSR by measuring beam position at a dispersed location as a function of bunch compression. In addition to operating with the beam on the rising part of the linac RF waveform, measurements were also made while accelerating on the falling part. For each, the full compression point was moved along the backleg of the machine and the response of the beam (distribution, extracted energy) measured. Initial results of start-to-end simulations using a 1D CSR algorithm show remarkably good agreement with measurements. A subsequent experiment established lasing with the beam accelerated on the falling side of the RF waveform in conjunction with positive momentum compaction (R56) to compress the bunch. The success of this experiment motivated the design of a modified CEBAF-style arc with control of CSR and microbunching effects.

  11. Spectroscopy of {Lambda} hypernuclei in the (e, e'K{sup +}) reaction at Jefferson Lab

    SciTech Connect (OSTI)

    Baturin, Pavlo [Florida International University, Miami, FL 33199 (United States)

    2010-08-05T23:59:59.000Z

    The coincidence experiment E01-011 (HKS), conducted in Hall C at Jefferson Laboratory in fall 2005, represents a new generation of high resolution {Lambda} hypernuclei spectroscopy experiments. It exploits the benefits of the associated electroproduction mechanism via the (e, e'K{sup +}) reaction. Compared with the widely studied meson-induced reactions, the higher quality quasi-continuous electron beam produces the potential for high resolution energy spectra. Further, it provides information complementary to meson-induced reactions: light neutron-rich and mirror hypernuclei, enhanced population of states accessible by spin-flip channels. The newly introduced tilt method of the electron spectrometer (ENGE) greatly reduced the rate of the background electrons due to Bremsstrahlung and Moeller scattering. A brand new high resolution kaon spectrometer (HKS) together with a sophisticated detector package yielded excellent PID and momentum resolution. This resulted in quality missing mass spectra with energy resolution of approximately 400-500 keV (FWHM), an unprecedented value in hypernuclear reaction spectroscopy. The experiment measured the spectra of exotic neutron rich and mirror {Lambda} hypernuclei {sub {Lambda}}{sup 7}He, {sub {Lambda}}{sup 12}B, {sub {Lambda}}{sup 28}Al with high statistics.

  12. Electroproduction de pions neutres dans le Hall A au Jefferson Laboratory

    SciTech Connect (OSTI)

    Eric Fuchey

    2010-06-01T23:59:59.000Z

    The past decade has seen a strong evolution of the study of the hadron structure through exclusive processes, allowing to access to a more complete description of this structure. Exclusive processes include DVCS (Deeply Virtual Compton Scattering) as well as hard exclusive meson production. This document is particularly focussed on the latter, and more particularly on exclusive neutral pion production. In this thesis is described the analysis of triple coincidence events H(e, e'{gamma}{gamma})X, which were a consequent by-product of the DVCS experiment which occured during Fall 2004 at Jefferson Lab Hall A, to extract the ep {yields} ep{pi}{sup 0} cross section. This cross section has been measured at two values of four-momentum transfer Q{sup 2} = 1.9 GeV{sup 2} and Q{sup 2} = 2.3 GeV{sup 2}. The statistical precision for these measurements is achieved at better than 5 %. The kinematic range allows to study the evolution of the extracted cross section as a function of Q{sup 2} and W. Results are be confronted with Regge inspired calculations and Generalized (GPD) predictions. An intepretation of our data within the framework of semi-inclusive deep inelastic scattering is also discussed.

  13. "Advances and Controversies" Orange County leads the world in innovative eye technology. In this two day symposium, key leading

    E-Print Network [OSTI]

    Cramer, Karina

    "Advances and Controversies" Orange County leads the world in innovative eye technology. In this two day symposium, key leading surgeons will discuss the many new technologies emerging in anterior segment, oculoplastic, and retinal surgery, innovative solutions to prevent and manage complications

  14. Femtosecond Near-Infrared Laser Desorption of Multilayer Benzene on Pt{111}: A Molecular Newton's Cradle?

    E-Print Network [OSTI]

    Levis, Robert J.

    Femtosecond Near-Infrared Laser Desorption of Multilayer Benzene on Pt{111}: A Molecular Newton Recently, the intense near-infrared laser desorption of intact benzene molecules has been reported.1 Three to alter the pure thermal distribution to one having a stream velocity.4 The high heating rates achievable

  15. IESE'2008 Defeng Sun 1 A Newton-CG Augmented Lagrangian Method

    E-Print Network [OSTI]

    Sun, Defeng

    IESE'2008 Defeng Sun 1 ' & $ % A Newton-CG Augmented Lagrangian Method for Large Scale Semidefinite Programming Defeng Sun Department of Mathematics National University of Singapore October 2, 2008 Joint work with Kim Chuan Toh and Xin-Yuan Zhao #12;IESE'2008 Defeng Sun 2 ' & $ % Let Sn be the set of all real

  16. SFU'2009/MATH Defeng Sun/NUS 1 A Newton-CG Augmented Lagrangian Method

    E-Print Network [OSTI]

    Sun, Defeng

    SFU'2009/MATH Defeng Sun/NUS 1 ' & $ % A Newton-CG Augmented Lagrangian Method for Large Scale Semidefinite Programming Defeng Sun Department of Mathematics National University of Singapore March 12, 2009 Joint work with Kim Chuan Toh and Xin-Yuan Zhao #12;SFU'2009/MATH Defeng Sun/NUS 2 ' & $ % Let Sn

  17. GENERALIZED NEWTON METHODS FOR THE 2DSIGNORINI CONTACT PROBLEM WITH FRICTION

    E-Print Network [OSTI]

    Kunisch, Karl

    GENERALIZED NEWTON METHODS FOR THE 2D­SIGNORINI CONTACT PROBLEM WITH FRICTION K. KUNISCH AND G. STADLER Abstract. The 2D­Signorini contact problem with Tresca and Coulomb friction is discussed in infinite-dimensional Hilbert spaces. First, the problem with given friction (Tresca friction) is considered

  18. Imaging Performance of the XMM-Newton X-ray telescopes

    E-Print Network [OSTI]

    B. Aschenbach; U. Briel; F. Haberl; H. Braeuninger; W. Burkert; A. Oppitz; P. Gondoin; D. Lumb

    2000-07-18T23:59:59.000Z

    The in-orbit imaging performance of the three X-ray telescopes on board of the X-ray astronomy observatory XMM-Newton is presented and compared with the performance measured on ground at the MPE PANTER test facility. The comparison shows an excellent agreement between the on ground and in-orbit performance.

  19. A NEWTON METHOD FOR AMERICAN OPTION PRICING THOMAS F. COLEMAN, YUYING LI, AND ARUN VERMA

    E-Print Network [OSTI]

    Li, Yuying

    in the American option valuation. We illustrate that the proposed method on aver- age solves a discretized problem curve. American option valuation has been an active research area; many methods have been proposedA NEWTON METHOD FOR AMERICAN OPTION PRICING THOMAS F. COLEMAN, YUYING LI, AND ARUN VERMA December

  20. The XMM-Newton observation of GRB 040106 : evidence for an afterglow in a wind environment

    E-Print Network [OSTI]

    B. Gendre; L. Piro; M. De Pasquale

    2004-07-29T23:59:59.000Z

    We present the XMM-Newton observation of GRB 040106. From the X-ray spectral index and temporal decay, we argue that the afterglow is consistent with a fireball expanding in a wind environment. A constant density environment is excluded by the data. This is one of the very few cases in which this conclusion can be drawn.

  1. A Nonsmooth Newton Solver for Capturing Exact Coulomb Friction in Fiber Assemblies

    E-Print Network [OSTI]

    A Nonsmooth Newton Solver for Capturing Exact Coulomb Friction in Fiber Assemblies FLORENCE in a stable way, and approximate Coulombs's friction law for making the problem tractable. In contrast- act Coulomb friction as a zero finding problem of a nonsmooth function. A semi-implicit time

  2. In-orbit performance of the XMM-Newton X-ray telescopes: images and spectra

    E-Print Network [OSTI]

    B. Aschenbach

    2001-09-21T23:59:59.000Z

    The performance of the three X-ray telescopes on-board of XMM-Newton is evaluated addressing imaging characteristics and effective collecting area. The agreement with ground calibration data is excellent. The analysis of images and spectra of cosmic X-ray sources, emphazising supernova and supernova remnants, prooves that the telescopes are even better than originally required.

  3. Calculation of Planetary Precession from Quantum-corrected Newton's Gravitation Law

    E-Print Network [OSTI]

    Zhen Wang

    1998-04-29T23:59:59.000Z

    With consideration of quantization of space, we relate Newton's gravitation with the Second Law of thermodynamics. This leads to a correction to its original form, which takes into consideration the role of classical measurement. Our calculation shows this corrected form of gravitation can give explanation for planetary precession.

  4. Structural Determinats Underlying Photoprotection in the Photoactive Orange Carotenoid Protein of Cyanobacteria

    SciTech Connect (OSTI)

    Wilson, Adjele; Kinney, James N.; Zwart, Petrus H.; Punginelli, Claire; D'Haene, Sandrine; Perreau, Francois; Klein, Michael G.; Kirilovsky, Diana; Kerfeld, Cheryl

    2010-04-01T23:59:59.000Z

    The photoprotective processes of photosynthetic organisms involve the dissipation of excess absorbed light energy as heat. Photoprotection in cyanobacteria is mechanistically distinct from that in plants; it involves the Orange Carotenoid Protein (OCP), a water-soluble protein containing a single carotenoid. The OCP is a new member of the family of blue light photoactive proteins; blue-green light triggers the OCP-mediated photoprotective response. Here we report structural and functional characterization of the wildtype and two mutant forms of the OCP, from the model organism Synechocystis PCC6803. The structural analysis provides highresolution detail of the carotenoidprotein interactions that underlie the optical properties of the OCP, unique among carotenoid-proteins in binding a single pigment per polypeptide chain. Collectively, these data implicate several key amino acids in the function of the OCP and reveal that the photoconversion and photoprotective responses of the OCP to blue-green light can be decoupled.

  5. Effect of retrapping on the persistent luminescence in strontium silicate orange–yellow phosphor

    SciTech Connect (OSTI)

    Xu, Xuhui; Yu, Xue, E-mail: yuyu6593@126.com; Zhou, Dacheng; Qiu, Jianbei, E-mail: qiu@kmust.edu.cn

    2013-10-15T23:59:59.000Z

    The orange–yellow long persistent luminescence in Sr{sub 3}SiO{sub 5}:Eu{sup 2+}, Er{sup 3+} with the chromaticity coordination of (0.48, 0.49) can persist for over 20 h above the recognizable intensity level (?0.32 mcd/m{sup 2}) because of retrapping carriers by the deep traps. The incorporation of Er{sup 3+} into Sr{sub 3}SiO{sub 5}:Eu{sup 2+} generates a large number of shallow traps responsible for the fast decay component as well as deep traps responsible for the decay tail of the LPL. It demonstrates that the retrapping of the carrier released from a trap plays an important role in the persistent luminescence process. - Graphical abstract: LPL decay curves of Sr{sub 3?x?y}SiO{sub 5}:xEu{sup 2+}, yEr{sup 3+} (x=0.0025, y=0, 0.0025). Inset: Orange–yellow emission images recorded using a classic Reflex digital camera with exposure times varying with the persistent luminescence times. Display Omitted - Highlights: • The persistence time of Sr{sub 3}SiO{sub 5}:Eu{sup 2+}, Er{sup 3+} lasts over 20 h above the recognizable intensity level. • The incorporation of Er{sup 3+} into Sr{sub 3}SiO{sub 5}:Eu{sup 2+} generates a large number of shallow traps. • The experimental results provide an evidence for the retrapping process in LPL processes.

  6. Light Vector Meson Photoproduction off of H at Jefferson Lab and rho-omega Interference in the Leptonic Decay Channel

    SciTech Connect (OSTI)

    Chaden Djalali

    2011-12-01T23:59:59.000Z

    Recent studies of light vector meson production in heavy nuclear targets has generated interest in {rho}-{omega} interference in the leptonic e{sup +}e{sup -} decay channel. An experimental study of the elementary process provides valuable input for theoretical models and calculations. In experiment E04-005 (g12), high statistics photoproduction data has been taken in Jefferson Lab's Hall B with the Cebaf Large Acceptance Spectrometer (CLAS). The invariant mass spectrum is fitted with two interfering relativistic Breit-Wigner functions to determine the interference phase. Preliminary analysis indicate a measurable {rho}-{omega} interference.

  7. The Jefferson Lab program: From 6 GeV operations to the 12 GeV upgrade

    SciTech Connect (OSTI)

    Marco Battaglieri

    2012-04-01T23:59:59.000Z

    The Thomas Jefferson National Laboratory and the CEBAF accelerator operated for more than a decade, running a comprehensive scientific program that improved our understanding of the strong interaction. The facility is now moving toward an upgrade of the machine, from 6 to 12 GeV; a new experimental hall will be added and the equipment of the three existing halls will be enhanced. In this contribution some selected results from the rich physics program run at JLab, as well as the prospects for the near future, will be presented.

  8. Environmental assessment of the interim lease of a warehouse for the Strategic Petroleum Reserve in Jefferson Parish, Louisiana

    SciTech Connect (OSTI)

    Not Available

    1992-01-01T23:59:59.000Z

    The US Department of Energy (DOE) strategic Petroleum Reserve (SPR) proposes to lease an existing commercial warehouse for the storage, maintenance, and periodic readiness testing of 15 trailer-mounted 2000-horsepower diesel engine-driven pumps. These pumps are spares for the seven SPR sites. The warehouse to be selected will be in or near Harahan, Jefferson Parish, Louisiana near the SPR Project Management Office and the offices of the SPR Management and Operating contractor. Environmental impacts of the storing and testing of the pumps are outlined.

  9. Jefferson Lab plans &quot;Celebration of Science&quot; Open House for May 1

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh SchoolIn12electron beam charges upJefferson Labshipping needs1|

  10. Jefferson Lab to Conduct Test of its Tornado Warning Siren at 10:30 a.m. on

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh SchoolIn12electron beam charges upJefferson

  11. Jefferson Lab to Conduct Test of its Tornado Warning Siren at 10:30 a.m. on

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh SchoolIn12electron beam charges upJeffersonFriday |

  12. Jefferson Lab to Test its Tornado Warning Siren at 10:30 a.m. on Friday,

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh SchoolIn12electron beam charges upJeffersonFriday |10-14LabApril 3

  13. Jefferson Lab to Test its Tornado Warning Siren at 10:30 a.m. on Friday,

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh SchoolIn12electron beam charges upJeffersonFriday |10-14LabApril

  14. Jefferson Lab to Test its Tornado Warning Siren at 10:30 a.m. on Friday,

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh SchoolIn12electron beam charges upJeffersonFriday

  15. Jefferson Lab to Test its Tornado Warning Siren at 10:30 a.m. on Friday,

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh SchoolIn12electron beam charges upJeffersonFridayMarch 6 |

  16. Overview of high gradient SRF R&D for ILC cavities at Jefferson Lab

    SciTech Connect (OSTI)

    Geng, Rongli [JLAB

    2009-11-01T23:59:59.000Z

    We report the progress on high gradient R&D of ILC cavities at Jefferson Lab (JLab) since the Beijing workshop. Routine 9-cell cavity electropolishing (EP) processing and RF testing has been enhanced with added surface mapping and T-mapping instrumentations. 12 new 9-cell cavities (10 of them are baseline fine-grain TESLA-shape cavities: 5 built by ACCEL/Research Instruments, 4 by AES and 1 by JLab; 2 of them are alternative cavities: 1 fine-grain ICHIRO-shape cavity built by KEK/Japan industry and 1 large-grain TESLA-shape cavity built by JLab) are EP processed and tested. 76 EP cycles are accumulated, corresponding to more than 200 hours of active EP time. Field emission (FE) and quench behaviors of electropolished 9-cell cavities are studied. EP process continues to be optimized, resulting in advanced procedures and hence improved cavity performance. Several 9-cell cavities reached 35 MV/m after the first light EP processing. FE-free performance has been demonstrated in 9-cell cavities in 35-40 MV/m range. 1-cell cavity studies explore new techniques for defect removal as well as advanced integrated cavity processing. Surface studies of niobium samples electropolished together with real cavities provide new insight into the nature of field emitters. Close cooperation with the US cavity fabrication industry has been undertaking with the successful achievement of 41 MV/m for the first time in a 9-cell ILC cavity built by AES. As the size of the data set grows, it is now possible to construct gradient yield curves, from which one can see that significant progress has been made in raising the high gradient yield.

  17. Readiness Assessments for the Shipment of TRU from West Jefferson, Ohio

    SciTech Connect (OSTI)

    Duffy, M. A.

    2003-02-26T23:59:59.000Z

    From 1943 through 1986, Battelle Memorial Institute (BMI) performed research and development work at its own facilities for the U.S. Department of Energy (DOE) and its predecessor agencies. The most highly contaminated facilities, comprising BMI's Nuclear Sciences Area, are located on 11 acres in West Jefferson, Ohio. Three buildings in this area were used to study nuclear reactor fuels, fuel element components, reactor designs, and radiochemistry analyses: one building contained nuclear hot cells, a second building contained a critical assembly and radiochemistry laboratory, and a third building once housed a nuclear research reactor. The Columbus Environmental Management Project (CEMP), one of the DOE Ohio Field Office's radioactive cleanup sites, oversees the Battelle Columbus Laboratories Decommissioning Project (BCLDP) for the decontamination and decommissioning (D&D) of BMI's Nuclear Sciences Area. The BCLDP mission is to decontaminate the Nuclear Sciences Area to a condition that is suitable for use without restrictions and to dispose of or store the associated radioactive waste at a suitable DOE-approved facility. During decontamination work, the CEMP is expected to generate approximately 120, 55-gallon drums of transuranic (TRU) waste, or about 20 truckloads. This TRU waste will be transported to DOE's Hanford nuclear facility in Washington State for temporary storage, prior to its ultimate disposal at the Waste Isolation Pilot Plant (WIPP). This paper presents a detailed approach for conducting readiness assessments for TRU waste shipments from any DOE site. It is based on demonstrating satisfaction of the 18 core requirements contained in DOE Order 425.1B, Startup and Restart of Nuclear Facilities, that are derived from the seven guiding principles of DOE's integrated safety management system.

  18. Physics Opportunities with the 12 GeV Upgrade at Jefferson Lab

    SciTech Connect (OSTI)

    Dudek, Jozef; Essig, Rouven; Kumar, Krishna; Meyer, Curtis; McKeown, Robert; Meziani, Zein Eddine; Miller, Gerald A; Pennington, Michael; Richards, David; Weinstein, Larry

    2012-08-01T23:59:59.000Z

    We are at the dawn of a new era in the study of hadronic nuclear physics. The non-Abelian nature of Quantum Chromodynamics (QCD) and the resulting strong coupling at low energies represent a significant challenge to nuclear and particle physicists. The last decade has seen the development of new theoretical and experimental tools to quantitatively study the nature of confinement and the structure of hadrons comprised of light quarks and gluons. Together these will allow both the spectrum and the structure of hadrons to be elucidated in unprecedented detail. Exotic mesons that result from excitation of the gluon field will be explored. Multidimensional images of hadrons with great promise to reveal the dynamics of the key underlying degrees of freedom will be produced. In particular, these multidimensional distributions open a new window on the elusive spin content of the nucleon through observables that are directly related to the orbital angular momenta of quarks and gluons. Moreover, computational techniques in Lattice QCD now promise to provide insightful and quantitative predictions that can be meaningfully confronted with, and elucidated by, forthcoming experimental data. In addition, the development of extremely high intensity, highly polarized and extraordinarily stable beams of electrons provides innovative opportunities for probing (and extending) the Standard Model, both through parity violation studies and searches for new particles. Thus the 12 GeV upgrade of the Continuous Electron Beam Accelerator Facility (CEBAF) at Jefferson Lab will enable a new experimental program with substantial discovery potential to address these and other important topics in nuclear, hadronic and electroweak physics.

  19. Depleted uranium risk assessment for Jefferson Proving Ground using data from environmental monitoring and site characterization. Final report

    SciTech Connect (OSTI)

    Ebinger, M.H.; Hansen, W.R.

    1996-10-01T23:59:59.000Z

    This report documents the third risk assessment completed for the depleted uranium (DU) munitions testing range at Jefferson Proving Ground (JPG), Indiana, for the U.S. Army Test and Evaluation command. Jefferson Proving Ground was closed in 1995 under the Base Realignment and Closure Act and the testing mission was moved to Yuma Proving Ground. As part of the closure of JPG, assessments of potential adverse health effects to humans and the ecosystem were conducted. This report integrates recent information obtained from site characterization surveys at JPG with environmental monitoring data collected from 1983 through 1994 during DU testing. Three exposure scenarios were evaluated for potential adverse effects to human health: an occasional use scenario and two farming scenarios. Human exposure was minimal from occasional use, but significant risk were predicted from the farming scenarios when contaminated groundwater was used by site occupants. The human health risk assessments do not consider the significant risk posed by accidents with unexploded ordnance. Exposures of white-tailed deer to DU were also estimated in this study, and exposure rates result in no significant increase in either toxicological or radiological risks. The results of this study indicate that remediation of the DU impact area would not substantially reduce already low risks to humans and the ecosystem, and that managed access to JPG is a reasonable model for future land use options.

  20. Sunn hemp, a major source-plant of the phytoplasma associated with huanglongbing symptoms of sweet orange in São Paulo State, Brazil

    E-Print Network [OSTI]

    2015-01-01T23:59:59.000Z

    orange in São Paulo State, Brazil. N. A. Wulff 1* , D. C.Araraquara, SP, 14807-040, Brazil; 2 Departamento deWorkshop; Ribeirão Preto, Brazil. p.18. Zhao Y, Wei W, Lee

  1. RF CONTROL REQUIREMENTS FOR THE CEBAF ENERGY UPGRADE C. Hovater, J. Delayen, L. Merminga, T. Powers, C. Reece, Jefferson Lab, Newport News, VA

    E-Print Network [OSTI]

    RF CONTROL REQUIREMENTS FOR THE CEBAF ENERGY UPGRADE CAVITIES* C. Hovater, J. Delayen, L. Merminga, T. Powers, C. Reece, Jefferson Lab, Newport News, VA Abstract The 6 GeV CEBAF accelerator superconducting cavity for the CEBAF and FEL upgrades. From the low-level RF (LLRF) controls perspective higher

  2. An Archaeological Survey of the Proposed Donner Brown A-83 #1 Gas Pipeline in Western Newton County, Texas 

    E-Print Network [OSTI]

    Moore, William

    2015-06-24T23:59:59.000Z

    An archaeological investigation of an 8260 foot pipeline (5.6 acres) in western Newton County, Texas was performed by Brazos Valley Research Associates of Bryan, Texas in July 2001. No archaeological sites were found to exist within the project...

  3. Calculation of the Deflection of Light Ray near the Sun with Quantum-corrected Newton's Gravitation Law

    E-Print Network [OSTI]

    Zhen Wang

    1999-06-16T23:59:59.000Z

    The deflection of light ray passing near the Sun is calculated with quantum-corrected Newton's gravitation law. The satisfactory result suggests that there may exist other theoretical possibilities besides the theory of relativity.

  4. Application of the Newton-Raphson method to systems of separation columns in which one or more reactions occur

    E-Print Network [OSTI]

    Mommessin, Paul Edward

    1981-01-01T23:59:59.000Z

    APPLICATION OF THZ NEWTON-RAPHSON METHOD TO SYSTEMS OF SEPARATION COLUMNS IN WHICH ONE CR MORE REACTIONS OCCUR A Thesis PAUL EDWARD MOMMESSIN Submitted tc the Graduate College of Texas ARM University in Partial fulfillment of the requirement... and content by: (C airman of Commi tee) (He of Department) /', (Member) i Member) December 1961 ABSTRACi Application of the Newton-Raphson Method to Systems of Separation Columns in Which One or More Reactions Occur (December 1o81) Paul Edward...

  5. The design and performance of the electromagnetic calorimeters in Hall C at Jefferson Lab

    SciTech Connect (OSTI)

    Vardan Tadevosyan, Hamlet Mkrtchyan, Arshak Asaturyan, Arthur Mkrtchyan, Simon Zhamkochyan

    2012-12-01T23:59:59.000Z

    The design and performance of the electromagnetic calorimeters in the magnetic spectrometers in Hall C at Jefferson Lab are presented. For the existing HMS and SOS spectrometers, construction information and comparisons of simulated and experimental results are presented. The design and simulated performance for a new calorimeter to be used in the new SHMS spectrometer is also presented. We have developed and constructed electromagnetic calorimeters from TF-1 type lead-glass blocks for the HMS and SOS magnetic spectrometers at JLab Hall C. The HMS/SOS calorimeters are of identical design and construction except for their total size. Blocks of dimension 10 cm × 10 cm × 70 cm are arranged in four planes and stacked 13 and 11 blocks high in the HMS and SOS respectively. The energy resolution of these calorimeters is better than 6%/?E, and pion/electron (?/e) separation of about 100:1 has been achieved in energy range 1–5 GeV. Good agreement has been observed between the experimental and GEANT4 simulated energy resolutions. The HMS/SOS calorimeters have been used nearly in all Hall C experiments, providing good energy resolution and a high pion suppression factor. No significant deterioration in their performance has been observed in the course of use since 1994. For the SHMS spectrometer, presently under construction, details on the calorimeter design and accompanying GEANT4 simulation efforts are given. A Preshower+Shower design was selected as the most cost-effective among several design choices. The preshower will consist of a layer of 28 modules with TF-1 type lead glass radiators, stacked in two columns. The shower part will consist of 224 modules with F-101 type lead glass radiators, stacked in a “fly's eye” configuration of 14 columns and 16 rows. The active area of 120 × 130 cm(2) will encompass the beam envelope at the calorimeter. The anticipated performance of the new calorimeter is simulated over the full momentum range of the SHMS, predicting resolution and yields similar to the HMS calorimeter. Good electron/hadron separation can be achieved by using energy deposition in the Preshower along with total energy deposition in the calorimeter. In this case the PID capability is similar to or better than that attainable with HMS calorimeter, with a pion suppression factor of a few hundreds predicted for 99% electron detection efficiency.

  6. Semi-Blind Gradient-Newton CMA and SDD Algorithm for MIMO Space-Time Equalisation

    E-Print Network [OSTI]

    Chen, Sheng

    Semi-Blind Gradient-Newton CMA and SDD Algorithm for MIMO Space-Time Equalisation S. Chen, L. HanzoBJ, UK. E-mails: {sqc, lh, htc1e08}@ecs.soton.ac.uk Abstract-- Semi-blind space-time equalisation-directed scheme is then applied to adapt the STE. The proposed semi-blind adaptive STE is capable of converging

  7. The distribution of absorption in AGN detected in the XMM-Newton observations of the CDFS

    E-Print Network [OSTI]

    T. Dwelly; M. J. Page

    2006-08-23T23:59:59.000Z

    We have used very deep XMM-Newton observations of the Chandra Deep Field-South to examine the spectral properties of the faint active galactic nucleus (AGN) population. Crucially, redshift measurements are available for 84% (259/309) of the XMM-Newton sample. We have calculated the absorption and intrinsic luminosities of the sample using an extensive Monte Carlo technique incorporating the specifics of the XMM-Newton observations. Twenty-three sources are found to have substantial absorption and intrinsic X-ray luminosities greater than 10^44 erg/s, putting them in the "type-2" QSO regime. We compare the redshift, luminosity and absorption distributions of our sample to the predictions of a range of AGN population models. In contrast to recent findings from ultra-deep Chandra surveys, we find that there is little evidence that the absorption distribution is dependent on either redshift or intrinsic X-ray luminosity. The pattern of absorption in our sample is best reproduced by models in which ~75% of the AGN population is heavily absorbed at all luminosities and redshifts.

  8. 1.1 Simulations of a Free-Electron Laser Oscillator at Jefferson Lab Lasing in the Vacuum Ultraviolet

    SciTech Connect (OSTI)

    Shinn, Michelle D. [JLAB; Benson, Stephen V. [JLAB

    2013-04-01T23:59:59.000Z

    The UVFEL at Jefferson Lab has provided a 10 eV photon beam for users by outcoupling the coherent third harmonic of the UVFEL operated at 372 nm. This can provide up to tens of milliwatts of power in the VUV. Operation of the FEL at the fundamental might enhance this power by up to a factor of 1000. With minor upgrades to the accelerator now underway and a new undulator proposed by Calabazas Creek Research, Inc. we show that we can lase in the fundamental at 124 nm. The predicted output is higher by four orders of magnitude on an average power basis and six orders of magnitude on a peak fluence basis than the Advanced Light Source at Lawrence Berkeley National Laboratory.

  9. Large area, high spatial resolution tracker for new generation of high luminosity experiments in Hall A at Jefferson Lab

    SciTech Connect (OSTI)

    Bellini, V; Castelluccio, D; Colilli, S; Cisbani, E; De Leo, R; Fratoni, R; Frullani, S; Garibaldi, F; Guiliani, F; Guisa, A; Gricia, M; Lucentini, M; Meddi, F; Minutoli, S; Musico, P; Noto, F; De Oliveira, R; Santavenere, F; Sutera, M C

    2011-06-01T23:59:59.000Z

    In 2014 the CEBAF electron accelerator at Jefferson Lab (JLab) will deliver a longitudinally polarized (up to 85%), high intensity (up to 100 ?A) beam with maximum energy of 12 GeV, twice the present value. To exploit the new opportunities that the energy upgrade will offer, a new spectrometer (Super BigBite - SBS) is under development, featuring very forward angle, large acceptance and ability to operate in high luminosity environment. The tracking system of SBS will consist of large area (40×150 cm2 and 50×200 cm2), high spatial resolution (better than 100 ?m) chambers based on the GEM technology and 2 small (10×20 cm) Silicon Strip Detector planes. The design of the GEM chambers and its sub-components such as the readout electronics is resented here.

  10. Analysis of New High-Q0 SRF Cavity Tests by Nitrogen Gas Doping at Jefferson Lab

    SciTech Connect (OSTI)

    Palczewski, Ari D. [JLAB; Geng, Rongli [JLAB; Reece, Charles E. [JLAB

    2014-12-01T23:59:59.000Z

    In order to refine systematic understanding and establish confident process control, Jefferson Lab has joined with partners to investigate and thoroughly characterize the dramatically higher Q0 of 1.3 GHz niobium cavities first reported by FNAL in 2013[1]. With partial support from the LCLS-II project, JLab has undertaken a parametric study of nitrogen doping in vacuum furnace at 800 °C followed by variable depth surface removal in the 5 - 20 ?m range. Q0 above 3×1010 are typical at 2.0 K and 16 MV/m accelerating field. We report observations from the single cell study and current interpretations. In addition to the parametric single cell study, we also report on the ongoing serial testing of six nitrogen-doped 9-cell cavities as baseline prototypes for LCLS-II.

  11. Experimental status DVCS e p ---> e p gamma and e n ---> e n gamma at Jefferson Lab-Hall A

    SciTech Connect (OSTI)

    C. Ferdi

    2004-06-02T23:59:59.000Z

    The experiments E00-110 and E03-106 [1] propose to measure the Deep Virtual Compton Scattering process (DVCS) ep --> ep{gamma} and en --> en{gamma} in Hall A at Jefferson Lab with a 5.75 GeV longitudinally polarized electron beam. The exclusivity requires the High Resolution Spectrometer of the Hall A for the detection of the scattered electron ({Delta}p/p = 10^-4), an electromagnetic calorimeter for the detection of the real photon ({sigma}/E<5%) and a scintillator array for the detection of the third particle. A 1 GHz sampling system allows one to deal with pile-up as expected from running detectors at small angles and high luminosity L = 10^37 cm^-2 s^-1. We will describe the apparatus and will explain the method to extract GPDs and evaluate the contributions from higher twists from the measurement of the cross-section difference.

  12. Environmental assessment for the Strategic Petroleum Reserve Big Hill facility storage of commercial crude oil project, Jefferson County, Texas

    SciTech Connect (OSTI)

    NONE

    1999-03-01T23:59:59.000Z

    The Big Hill SPR facility located in Jefferson County, Texas has been a permitted operating crude oil storage site since 1986 with benign environmental impacts. However, Congress has not authorized crude oil purchases for the SPR since 1990, and six storage caverns at Big Hill are underutilized with 70 million barrels of available storage capacity. On February 17, 1999, the Secretary of Energy offered the 70 million barrels of available storage at Big Hill for commercial use. Interested commercial users would enter into storage contracts with DOE, and DOE would receive crude oil in lieu of dollars as rental fees. The site could potentially began to receive commercial oil in May 1999. This Environmental Assessment identified environmental changes that potentially would affect water usage, power usage, and air emissions. However, as the assessment indicates, changes would not occur to a major degree affecting the environment and no long-term short-term, cumulative or irreversible impacts have been identified.

  13. Analysis of the Newton-Sabatier scheme for inverting fixed-energy phase shifts

    E-Print Network [OSTI]

    A. G. Ramm

    2001-10-18T23:59:59.000Z

    It is proved that the Newton-Sabatier (NS) procedure does not solve the inverse scattering problem with fixed-energy data and is not a valid inversion method, in the following sense: 1) the basic integral equation, introduced by R. Newton without derivation, in general, may be not solvable for some $r>0$, and in this case NS procedure breaks down: it produces a potential which is not locally integrable. 2) the ansatz $(\\ast)$ $K(r,s) = \\sum^\\infty_{l=0} c_l \\phi_l (r) u_l (s)$, used by R. Newton, is incorrect: the transformation operator $I-K$, corresponding to a generic does not have $K$ of the form $(\\ast),$ and 3) the set of potentials $q \\in L_{1,1},$ that can possibly be obtained by NS procedure, is not dense in the set of all $L_{1,1}$ potentials in the norm of $L_{1,1}$. Therefore one cannot justify NS procedure even for approximate solution of the inverse scattering problem with fixed-energy phase shifts as data. Thus, the NS procedure, if considered as a method for solving the inverse scattering problem, is based on an incorrect ansatz, the basic integral equation of NS procedure is, in general, not solvable for some $r>0$, and in this case this procedure breaks down, and NS procedure is not an inversion theory: it cannot recover generic potentials $q \\in L_{1,1}$ from their fixed-energy phase shifts. Suppose now that one considers another problem: given fixed-energy phase shifts, corresponding to some potential, find a potential which generates the same phase shifts. Then NS procedure does not solve this problem either: the basic integral equation, in general, may be not solvable for some $r>0$, and then NS procedure breaks down.

  14. Comment on "Constraining a possible dependence of Newton's constant on the Earth's magnetic field"

    E-Print Network [OSTI]

    J. P. Mbelek

    2004-11-26T23:59:59.000Z

    Recently A. Rathke has argued that the KK$\\psi$ model explanation of the discrepant measurements of Newton's constant is already ruled out due to E\\"otv\\"os experiments by several orders of magnitude. The structure of the action of the KK$\\psi$ model is even qualified as inconsistent in the sense that it would yield a negative energy of the electromagnetic field. Here, I refute both claims and emphasize the possibility still open to reconcile the experimental bounds on the test of the weak equivalence principle (WEP) with scalar-tensor theories in general by some compensating mechanism.

  15. Communication: Newton homotopies for sampling stationary points of potential energy landscapes

    SciTech Connect (OSTI)

    Mehta, Dhagash, E-mail: dmehta@nd.edu [Department of Applied and Computational Mathematics and Statistics, University of Notre Dame, Notre Dame, Indiana 46556 (United States); University Chemical Laboratory, The University of Cambridge, Cambridge CB2 1EW (United Kingdom); Chen, Tianran, E-mail: chentia1@msu.edu [Department of Mathematics, Michigan State University, East Lansing, Michigan 48823 (United States); Hauenstein, Jonathan D., E-mail: hauenstein@nd.edu [Department of Applied and Computational Mathematics and Statistics, University of Notre Dame, Notre Dame, Indiana 46556 (United States); Wales, David J., E-mail: dw34@cam.ac.uk [University Chemical Laboratory, The University of Cambridge, Cambridge CB2 1EW (United Kingdom)

    2014-09-28T23:59:59.000Z

    One of the most challenging and frequently arising problems in many areas of science is to find solutions of a system of multivariate nonlinear equations. There are several numerical methods that can find many (or all if the system is small enough) solutions but they all exhibit characteristic problems. Moreover, traditional methods can break down if the system contains singular solutions. Here, we propose an efficient implementation of Newton homotopies, which can sample a large number of the stationary points of complicated many-body potentials. We demonstrate how the procedure works by applying it to the nearest-neighbor ?{sup 4} model and atomic clusters.

  16. F. Newton Hays, 1969 | U.S. DOE Office of Science (SC)

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville Power AdministrationField8,Dist. Category UC-l 1,EnergyExploringGamma-ray2 0HIGH RISKF. Newton

  17. XMM-Newton view of a hard X-ray transient IGR J17497-2821

    E-Print Network [OSTI]

    Alam, Md Shah; Mondal, Aditya S; Dewangan, Gulab C; Jhingan, Sanjay; Raychaudhuri, Biplab

    2015-01-01T23:59:59.000Z

    We present spectral and energy dependent timing characteristics of the hard X-ray transient IGR J17497-2821 based on XMM-Newton observations performed five and nine days after its outburst on 2006 September 17. We find that the source spectra can be well described by a hard (Gamma ~ 1.50) powerlaw and a weak multicolour disk blackbody with inner disk temperature kT_{in} ~ 0.2 KeV. A broad iron K - alpha line with FWHM ~ 27000 Km/s, consistent with that arising from an accretion disk truncated at large radius, was also detected. The power density spectra of IGR J17497 - 2821, derived from the high resolution (30 micro second) timing mode XMM-Newton observations, are characterised by broadband noise components that are well modelled by three Lorentzians. The shallow power law slope, low disk luminosity and the shape of the broadband power density spectrum indicate that the source was in the hard state. The rms variability in the softer energy bands (0.3-2 KeV) found to be ~ 1.3 times that in 2-5 and 5-10 KeV en...

  18. Evaluation of Orange and Rockland Utilities, Inc.`s competitive bidding program for demand-side resources. Final report

    SciTech Connect (OSTI)

    Peters, J.S.; Stucky, L.; Seratt, P.; Darden-Butler, D. [Barakat and Chamberlin, Inc., Portland, OR (United States)

    1993-02-01T23:59:59.000Z

    The process evaluation reports on the implementation of Orange and Rockland Utilities demand-side bidding program in New York State during 1991 and 1992. The program is implemented by two energy service companies in Orange and rockland`s New York State service territory. The process evaluation methodology included interviews with utility staff (3), energy service company staff (2), and participating (6) and nonparticipating (7) utility customers. The two energy service companies had enrolled 14 customers in the program by summer 1992. One company had achieved 90% of their 2.75 MW bid and the other had achieved less than 90% of their 6.9 MW bid. Critical factors in success were determination of a reasonable bid amount for the market and marketing to the appropriate customers. Customers most interested in the program included those with limited access to capital and medium-sized firms with poor cash flows, particularly schools and hospitals. The findings also show that due to the incentive structure and associated need for substantial customer contributions, lighting measures dominate all installations. Customers, however, were interested in the potential savings and six of the nonparticipants chose to either install measures on their own or enroll in the utility`s rebate program.

  19. About new Inverse Formulas of the Transformation of Laplace,II.The Laplace transform and the potential of Newton

    E-Print Network [OSTI]

    A. V. Pavlov-Maxorin

    2014-10-19T23:59:59.000Z

    In article a new class of the odd ore even transforms of Laplace is presented. The class leads to some unforeseeable consequences in direction of the Fourier transforms.The potential of Newton as one of the form of the double Laplace transform is considered too.

  20. New technique for measuring Newton's constant G J. H. Gundlach, E. G. Adelberger, B. R. Heckel, and H. E. Swanson

    E-Print Network [OSTI]

    , , of a torsion pen- dulum in the field of a nearby attractor can be expressed in a multipole formalism 9,10 : l April 1996 We discuss a new technique for measuring Newton's constant G using a rotating torsion balance the torque on a torsion pendulum or relied on the constancy of the restoring torque of a torsion fiber

  1. Differential cross section and recoil polarization measurements for the gamma p to K+ Lambda reaction using CLAS at Jefferson Lab

    E-Print Network [OSTI]

    M. E. McCracken; M. Bellis; C. A. Meyer; M. Williams; for the CLAS Collaboration

    2009-12-23T23:59:59.000Z

    We present measurements of the differential cross section and Lambda recoil polarization for the gamma p to K+ Lambda reaction made using the CLAS detector at Jefferson Lab. These measurements cover the center-of-mass energy range from 1.62 to 2.84 GeV and a wide range of center-of-mass K+ production angles. Independent analyses were performed using the K+ p pi- and K+ p (missing pi -) final-state topologies; results from these analyses were found to exhibit good agreement. These differential cross section measurements show excellent agreement with previous CLAS and LEPS results and offer increased precision and a 300 MeV increase in energy coverage. The recoil polarization data agree well with previous results and offer a large increase in precision and a 500 MeV extension in energy range. The increased center-of-mass energy range that these data represent will allow for independent study of non-resonant K+ Lambda photoproduction mechanisms at all production angles.

  2. Measurement and simulation of the impact of coherent synchrotron radiation on the Jefferson Laboratory energy recovery linac electron beam

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

    Hall, C C.; Biedron, S G.; Edelen, A L.; Milton, S V.; Benson, S; Douglas, D; Li, R; Tennant, C D.; Carlsten, B E.

    2015-03-01T23:59:59.000Z

    In an experiment conducted on the Jefferson Laboratory IR free-electron laser driver, the effects of coherent synchrotron radiation (CSR) on beam quality were studied. The primary goal of this work was to explore CSR output and effect on the beam with variation of the bunch compression in the IR recirculator. Here we examine the impact of CSR on the average energy loss as a function of bunch compression as well as the impact of CSR on the energy spectrum of the bunch. Simulation of beam dynamics in the machine, including the one-dimensional CSR model, shows very good agreement with themore »measured effect of CSR on the average energy loss as a function of compression. Finally, a well-defined structure is observed in the energy spectrum with a feature in the spectrum that varies as a function of the compression. This effect is examined in simulations, as well, and a simple explanation for the variation is proposed.« less

  3. Effect of HSV-2 serostatus on the acquisition of HIV by young men: results of a longitudinal study conducted in Orange Farm (South Africa)

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    conducted in Orange Farm (South Africa) Joelle Sobngwi - Tambekou jtambekou@yahoo.fr INSERM U687, Villejuif, France Dirk Taljaard dirk@progressus.co.za Progressus, Johannesburg, South Africa Pascale Lissouba, South Africa Emmanuel Lagarde emmanuel.lagarde@isped.u- bordeaux2.fr INSERM U593, Bordeaux, France

  4. First XMM-Newton observations of a Cataclysmic Variable I: Timing studies of OY Car

    E-Print Network [OSTI]

    Gavin Ramsay; Tracey Poole; Keith Mason; France Cordova; William Priedhorsky; Alice Breeveld; Rudi Much; Julian Osborne; Dirk Pandel; Stephen Potter; Jennifer West; Peter Wheatley

    2000-10-18T23:59:59.000Z

    We present XMM-Newton observations of the eclipsing, disc accreting, cataclysmic variable OY Car which were obtained as part of the performance verification phase of the mission. The star was observed 4 days after an outburst and then again 5 weeks later when it was in a quiescent state. There is a quasi-stable modulation of the X-rays at ~2240 sec, which is most prominent at the lowest energies. We speculate that this may be related to the spin period of the white dwarf. The duration of the eclipse ingress and egress in X-rays is 20--30 sec. This indicates that the bulk of the X-ray emission originates from the boundary layer which has a negligible height above the surface of the white dwarf. The eclipse profile implies a white dwarf of mass M_{1}=0.9-1.1Msun and a secondary star of M_{2}=0.08-0.11Msun.

  5. Inverse scattering at high energies for the multidimensional Newton equation in a long range potential

    E-Print Network [OSTI]

    Alexandre Jollivet

    2013-06-16T23:59:59.000Z

    We define scattering data for the Newton equation in a potential $V\\in C^2(\\R^n,\\R)$, $n\\ge2$, that decays at infinity like $r^{-\\alpha}$ for some $\\alpha\\in (0,1]$. We provide estimates on the scattering solutions and scattering data and we prove, in particular, that the scattering data at high energies uniquely determine the short range part of the potential up to the knowledge of the long range tail of the potential. The Born approximation at fixed energy of the scattering data is also considered. We then change the definition of the scattering data to study inverse scattering in other asymptotic regimes. These results were obtained by developing the inverse scattering approach of [Novikov, 1999].

  6. The generalized Newton's law of gravitation versus the general theory of relativity

    E-Print Network [OSTI]

    A. I. Arbab

    2012-01-10T23:59:59.000Z

    Einstein general theory of relativity (GTR) accounted well for the precession of the perihelion of planets and binary pulsars. While the ordinary Newton law of gravitation failed, a generalized version yields similar results. We have shown here that these effects can be accounted for as due to the existence of gravitomagnetism only, and not necessarily due to the curvature of space time. Or alternatively, gravitomagnetism is equivalent to a curved space-time. The precession of the perihelion of planets and binary pulsars may be interpreted as due to the spin of the orbiting planet ($m$) about the Sun ($M$)\\,. The spin ($S$) of planets is found to be related to their orbital angular momentum ($L$) by a simple formula, \\emph{viz}., $S\\propto \\,\\frac{m}{M}L$\\,.

  7. Modified Newton's Law of Gravitation Due to Minimal Length in Quantum Gravity

    E-Print Network [OSTI]

    Ahmed Farag Ali; A. Tawfik

    2013-02-22T23:59:59.000Z

    A recent theory about the origin of the gravity suggests that the gravity is originally an entropic force. In this work, we discuss the effects of generalized uncertainty principle (GUP) which is proposed by some approaches to quantum gravity such as string theory, black hole physics and doubly special relativity theories (DSR), on the area law of the entropy. This leads to a $\\sqrt{Area}$-type correction to the area law of entropy which imply that the number of bits $N$ is modified. Therefore, we obtain a modified Newton's law of gravitation. Surprisingly, this modification agrees with different sign with the prediction of Randall-Sundrum II model which contains one uncompactified extra dimension. Furthermore, such modification may have observable consequences at length scales much larger than the Planck scale.

  8. On the extension of Newton's second law to theories of gravitation in curved space-time

    E-Print Network [OSTI]

    Mayeul Arminjon

    2006-09-14T23:59:59.000Z

    We investigate the possibility of extending Newton's second law to the general framework of theories in which special relativity is locally valid, and in which gravitation changes the flat Galilean space-time metric into a curved metric. This framework is first recalled, underlining the possibility to uniquely define a space metric and a local time in any given reference frame, hence to define velocity and momentum in terms of the local space and time standards. It is shown that a unique consistent definition can be given for the derivative of a vector (the momentum) along a trajectory. Then the possible form of the gravitation force is investigated. It is shown that, if the motion of free particles has to follow space-time geodesics, then the expression for the gravity acceleration is determined uniquely. It depends on the variation of the metric with space and time, and it involves the velocity of the particle.

  9. Design of highly ordered Ag-SrTiO{sub 3} nanotube arrays for photocatalytic degradation of methyl orange

    SciTech Connect (OSTI)

    Sun Yue [Key Laboratory of Design and Synthesis of Functional Materials and Green Catalysis, Colleges of Heilongjiang Province, College of Chemistry and Chemical Engineering, Harbin Normal University, Harbin 150025 (China); Liu Jiawen, E-mail: jiawenliu@yahoo.com.cn [Key Laboratory of Design and Synthesis of Functional Materials and Green Catalysis, Colleges of Heilongjiang Province, College of Chemistry and Chemical Engineering, Harbin Normal University, Harbin 150025 (China); Li Zhonghua, E-mail: lizh@hit.edu.cn [Key Laboratory of Microsystems and Microstructures Manufacturing, Ministry of Education, Harbin Institute of Technology, Harbin 150001 (China)

    2011-08-15T23:59:59.000Z

    Ag-SrTiO{sub 3} nanotube arrays were successfully prepared for the degradation of methyl orange (MO) under ultraviolet irradiation. In order to form highly ordered SrTiO{sub 3} nanotube arrays, the preparation of TiO{sub 2} nanotube arrays by anodic oxidation of titanium foil in different electrolytes was investigated. The selected organic solvents in electrolytes include glycerol, dimethyl sulfoxide and glycol. The results indicate that the morphology of TiO{sub 2} nanotube arrays prepared in glycol containing ammonium fluoride electrolyte is more regular. Then SrTiO{sub 3} nanotube arrays were synthesized by a hydrothermal method using TiO{sub 2} nanotube arrays as the precursor. In order to further improve the photocatalytic activity of SrTiO{sub 3} nanotube arrays, Ag nanoparticles were loaded on SrTiO{sub 3} nanotube arrays by two sets of experiments. The loaded Ag results in an enhancement of photocatalytic activity of SrTiO{sub 3} nanotube arrays. Moreover, the effect of pH on the photocatalytic degradation of MO was also studied. - Graphical abstract: Ag-SrTiO{sub 3} nanotube arrays were successfully prepared. The photocatalytic activity was evaluated by degradation of methyl orange under ultraviolet irradiation. Highlights: > TiO{sub 2} nanotube arrays prepared in glycol+NH{sub 4}F electrolyte are more regular. > Highly ordered Ag-SrTiO{sub 3} nanotube arrays were successfully synthesized. > Ag loading could enhance the photocatalytic activity of SrTiO{sub 3} nanotube arrays. > Ag-SrTiO{sub 3} nanotube arrays show excellent catalytic activity at a low pH value.

  10. Jefferson Lab awards upgrade contracts | Jefferson Lab

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh SchoolIn12 InvestigationLabNewLabLabbeginawards upgrade

  11. Proposal for an experiment to search for Randall-Sundrum-type corrections to Newton's law of gravitation

    SciTech Connect (OSTI)

    Azam, Mofazzal [Theoretical Physics Division, Bhabha Atomic Research Centre, Mumbai (India); Sami, M. [Centre for Theoretical Physics, Jamia Millia Islamia, New Delhi (India); Unnikrishnan, C. S. [Tata Institute of Fundamental Research, Mumbai (India); Shiromizu, T. [Department of Physics, Tokyo Institute of Technology, Tokyo (Japan)

    2008-05-15T23:59:59.000Z

    String theory, as well as the string inspired brane-world models such as the Randall-Sundrum (RS) one, suggest a modification of Newton's law of gravitation at small distance scales. Search for modifications of standard gravity is an active field of research in this context. It is well known that short range corrections to gravity would violate the Newton-Birkhoff theorem. Based on calculations of RS-type non-Newtonian forces for finite size spherical bodies, we propose a torsion balance based experiment to search for the effects of violation of this theorem valid in Newtonian gravity as well as in the general theory of relativity. We explain the main principle behind the experiment and provide detailed calculations suggesting optimum values of the parameters of the experiment. The projected sensitivity is sufficient to probe the RS parameter up to 10 microns.

  12. Proposal for an experiment to search for Randall-Sundrum type corrections to Newton's law of gravitation

    E-Print Network [OSTI]

    Mofazzal Azam; M. Sami; C. S. Unnikrishnan; T. Shiromizu

    2008-04-02T23:59:59.000Z

    String theory, as well as the string inspired brane-world models such as the Randall-Sundrum (RS) one, suggest a modification of Newton's law of gravitation at small distance scales. Search for modifications of standard gravity is an active field of research in this context. It is well known that short range corrections to gravity would violate the Newton-Birkhoff theorem. Based on calculations of RS type non-Newtonian forces for finite size spherical bodies, we propose a torsion balance based experiment to search for the effects of violation of this celebrated theorem valid in Newtonian gravity as well as the general theory of relativity. We explain the main principle behind the experiment and provide detailed calculations suggesting optimum values of the parameters of the experiment. The projected sensitivity is sufficient to probe the Randall-Sundrum parameter up to 10 microns.

  13. Boosting Deuteron Polarization in HD Targets: Experience of moving spins between H and D with RF methods during the E06-101 experiment at Jefferson Lab

    SciTech Connect (OSTI)

    Wei, Xiangdong; Bass, Christopher; D'Angelo, Annalisa; Deur, Alexandre; Dezern, Gary; Kageya, Tsuneo; Laine, Vivien; Lowry, Michael; Sandorfi, Andrew; Teachey, Robert; Wang, Haipeng; Whisnant, Charles

    2014-06-01T23:59:59.000Z

    Solid HDice targets are polarized by bringing the HD crystal to thermal equilibrium at low temperature and high magnetic field, typically 10-20 mK and 15 Tesla, at Jefferson Lab. In this regime, due to its smaller magnetic moment, the resulting polarization for D is always at least three times smaller than for H. The controlled amount of polarizing catalysts, o-H2 and p-D2, used in the process of reaching a frozen-spin state, further limit the maximum achievable D polarization. Nonetheless, H and D polarizations can be transferred from one to the other by connecting the H and D sub-states of the HD system with RF. In a large target, the RF power needed for such transitions is effectively limited by non-uniformities in the RF field. High efficiency transfers can require substantial RF power levels, and a tuned-RF circuit is needed to prevent large temperature excursions of the holding cryostat. In this paper, we compare the advantages and limitations of two different RF transfer methods to increase D polarization, Forbidden Adiabatic and Saturated Forbidden RF Transitions. The experience with the HD targets used during the recently completed E06-101 experiment in Hall-B of Jefferson Lab is discussed.

  14. The XMM-Newton Survey in the Marano Field I. The X-ray data and optical follow-up

    E-Print Network [OSTI]

    Krumpe, M; Schwope, A D; Wagner, S; Zamorani, G; Mignoli, M; Staubert, R; Wisotzki, L; Hasinger, G

    2006-01-01T23:59:59.000Z

    We report on a medium deep XMM-Newton survey of the Marano Field and optical follow-up observations. The mosaicked XMM-Newton pointings in this optical quasar survey field cover 0.6 square degree with a total of 120 ksec good observation time. We detected 328 X-ray sources in total. The turnover flux of our sample is f~5x10^(-15) erg/cm^2/s in the 0.2-10 keV band. With VLT FORS1 and FORS2 spectroscopy we classified 96 new X-ray counterparts. The central 0.28 square degree, where detailed optical follow-up observations were performed, contain 170 X-ray sources (detection likelihood ML>10), out of which 48 had already been detected by ROSAT. In this region we recover 23 out of 29 optically selected quasars. With a total of 110 classifications in our core sample we reach a completeness of ~65%. About one third of the XMM-Newton sources is classified as type II AGN with redshifts mostly below 1.0. Furthermore, we detect five high redshift type II AGN (2.2

  15. Discovery of a bright X-ray transient in the Galactic Center with XMM-Newton

    E-Print Network [OSTI]

    D. Porquet; N. Grosso; V. Burwitz; I. L. Andronov; B. Aschenbach; P. Predehl; R. S. Warwick

    2004-12-06T23:59:59.000Z

    We report the discovery of a bright X-ray transient object, XMMU J174554.4-285456, observed in outburst with XMM-Newton on October 3, 2002,and located at 6.3' from SgrA*, the supermassive black hole at the Galactic center.This object exhibits a very large X-ray luminosity variability of a factor of about 1300 between two X-ray observations separated by four months. The X-ray spectrum is best fitted by a power-law with a photon index of 1.6+/-0.2 and absorption column density of 14.1 (+1.6,-1.4) x 10^22 cm^-2. This large absorption suggests this source is located at the distance of the Galactic center, i.e., 8 kpc. The 2-10 keV luminosity is about 1.0 x 10^35(d/8kpc)^2 erg/s. A pulsation period of about 172 s is hinted by the timing analysis. The X-ray properties strongly suggest a binary system with either a black hole or a neutron star for the compact object.

  16. The temperature and distribution of gas in CL 0016+16 measured with XMM-Newton

    E-Print Network [OSTI]

    Birkinshaw, M

    2003-01-01T23:59:59.000Z

    We present results of a 37 ks observation of CL 0016+16 with the XMM-Newton EPIC instrument. Within 1.5 arcmin of the cluster centre we measure a gas temperature of kT = 9.13^{+0.24}_{-0.22} keV and an abundance of 0.22^{+0.04}_{-0.03} times the solar value (1 sigma uncertainties). This significant improvement over previous measurements has allowed us to revise the estimate of the Hubble constant based on CL 0016+16 to 68 +/- 8 km s^{-1} Mpc^{-1} (random error only), close to the value from the Hubble Space Telescope distance-scale project. The total gravitating mass within a radius of 248 kpc of the cluster centre is in good agreement with that found from gravitational lensing over the same region, supporting the assumption of isothermal gas in hydrostatic equilibrium. The gas mass fraction of 0.13 +/- 0.02 is in remarkable agreement with that given by cosmological parameters for the Universe as a whole, suggesting that CL 0016+16 is a fair sample of the matter content of the Universe. While there is no spec...

  17. XMM-Newton and Gemini Observations of Eight RASSCALS Galaxy Groups

    E-Print Network [OSTI]

    A. Mahdavi; A. Finoguenov; H. Boehringer; M. J. Geller; J. P. Henry

    2005-02-18T23:59:59.000Z

    We study the distribution of gas pressure and entropy in eight groups of galaxies belonging to the ROSAT All-Sky Survey / Center for Astrophysics Loose Systems (RASSCALS). We use archival and proprietary XMM-Newton observations, supplementing the X-ray data with redshifts derived from the literature; we also list 127 new redshifts measured with the Gemini North telescope. The groups show remarkable self-similarity in their azimuthally averaged entropy and temperature profiles. The entropy increases with radius; the behavior of the entropy profiles is consistent with an increasing broken power law with inner and outer slope 0.92+0.04-0.05 and 0.42+0.05-0.04 (68% confidence), respectively. There is no evidence of a central, isentropic core, and the entropy distribution in most of the groups is flatter at large radii than in the inner region, challenging earlier reports as well as theoretical models predicting large isentropic cores or asymptotic slopes of 1.1 at large radii. The pressure profiles are consistent with a self-similar decreasing broken power law in radius; the inner and outer slopes are -0.78+0.04-0.03 and -1.7+0.1-0.3, respectively. The results suggest that the larger scatter in the entropy distribution reflects the varied gasdynamical histories of the groups; the regularity and self-similarity of the pressure profiles is a sign of a similarity in the underlying dark matter distributions.

  18. XMM-Newton observation of SNR J0533-7202 in the Large Magellanic Cloud

    E-Print Network [OSTI]

    Kavanagh, P J; Whelan, E T; Maggi, P; Haberl, F; Bozzetto, L M; Filipovic, M D; Crawford, E J

    2015-01-01T23:59:59.000Z

    Aims. We present an X-ray study of the supernova remnant SNR J0533-7202 in the Large Magellanic Cloud (LMC) and determine its physical characteristics based on its X-ray emission. Methods. We observed SNR J0533-7202 with XMM-Newton (flare-filtered exposure times of 18 ks EPIC-pn and 31 ks EPIC-MOS1/MOS2). We produced X-ray images of the SNR, performed an X-ray spectral analysis, and compared the results to multi-wavelength studies. Results. The distribution of X-ray emission is highly non-uniform, with the south-west region brighter than the north-east. The X-ray emission is correlated with the radio emission from the remnant. We determine that this morphology is likely due to the SNR expanding into a non-uniform ambient medium and not an absorption effect. We estimate the size to be 53.9 (\\pm 3.4) x 43.6 (\\pm 3.4) pc, with the major axis rotated ~64 degrees east of north. We find no spectral signatures of ejecta and infer that the X-ray plasma is dominated by swept-up interstellar medium. Using the spectral ...

  19. Saari's homographic conjecture for planar equal-mass three-body problem in Newton gravity

    E-Print Network [OSTI]

    Fujiwara, Toshiaki; Ozaki, Hiroshi; Taniguchi, Tetsuya

    2012-01-01T23:59:59.000Z

    Saari's homographic conjecture in N-body problem under the Newton gravity is the following; configurational measure \\mu=\\sqrt{I}U, which is the product of square root of the moment of inertia I=(\\sum m_k)^{-1}\\sum m_i m_j r_{ij}^2 and the potential function U=\\sum m_i m_j/r_{ij}, is constant if and only if the motion is homographic. Where m_k represents mass of body k and r_{ij} represents distance between bodies i and j. We prove this conjecture for planar equal-mass three-body problem. In this work, we use three sets of shape variables. In the first step, we use \\zeta=3q_3/(2(q_2-q_1)) where q_k \\in \\mathbb{C} represents position of body k. Using r_1=r_{23}/r_{12} and r_2=r_{31}/r_{12} in intermediate step, we finally use \\mu itself and \\rho=I^{3/2}/(r_{12}r_{23}r_{31}). The shape variables \\mu and \\rho make our proof simple.

  20. Saari's homographic conjecture for planar equal-mass three-body problem in Newton gravity

    E-Print Network [OSTI]

    Toshiaki Fujiwara; Hiroshi Fukuda; Hiroshi Ozaki; Tetsuya Taniguchi

    2012-02-04T23:59:59.000Z

    Saari's homographic conjecture in N-body problem under the Newton gravity is the following; configurational measure \\mu=\\sqrt{I}U, which is the product of square root of the moment of inertia I=(\\sum m_k)^{-1}\\sum m_i m_j r_{ij}^2 and the potential function U=\\sum m_i m_j/r_{ij}, is constant if and only if the motion is homographic. Where m_k represents mass of body k and r_{ij} represents distance between bodies i and j. We prove this conjecture for planar equal-mass three-body problem. In this work, we use three sets of shape variables. In the first step, we use \\zeta=3q_3/(2(q_2-q_1)) where q_k \\in \\mathbb{C} represents position of body k. Using r_1=r_{23}/r_{12} and r_2=r_{31}/r_{12} in intermediate step, we finally use \\mu itself and \\rho=I^{3/2}/(r_{12}r_{23}r_{31}). The shape variables \\mu and \\rho make our proof simple.

  1. Effervescent heating: constraints from nearby cooling flow clusters observed with XMM-Newton

    E-Print Network [OSTI]

    Rocco Piffaretti; Jelle Kaastra

    2006-05-15T23:59:59.000Z

    We have used deprojected radial density and temperature profiles of a sample of 16 nearby CF clusters observed with XMM-Newton to test whether the effervescent heating model can satisfactorily explain the dynamics of CF clusters. For each cluster we derived the required extra heating as a function of cluster-centric distance for various values of the unknown parameters $\\dot M$ (mass deposition rate) and $f_c$ (conduction efficiency). We fitted the extra heating curve using the AGN effervescent heating function and derived the AGN parameters $L$ (the time-averaged luminosity) and $r_0$ (the scale radius where the bubbles start rising in the ICM). While we do not find any solution with the effervescent heating model for only one object, we do show that AGN and conduction heating are not cooperating effectively for half of the objects in our sample. For most of the clusters we find that, when a comparison is possible, the derived AGN scale radius $r_0$ and the observed AGN jet extension have the same order of magnitude. The AGN luminosities required to balance radiative losses are substantially lowered if the fact that the AGN deposits energy within a finite volume is taken into account. For the Virgo cluster, we find that the AGN power derived from the effervescent heating model is in good agreement with the observed jet power.

  2. Connections and dynamical trajectories in generalised Newton-Cartan gravity I. An intrinsic view

    E-Print Network [OSTI]

    Xavier Bekaert; Kevin Morand

    2015-05-14T23:59:59.000Z

    The "metric" structure of nonrelativistic spacetimes consists of a one-form (the absolute clock) whose kernel is endowed with a positive-definite metric. Contrarily to the relativistic case, the metric structure and the torsion do not determine a unique Galilean (i.e. compatible) connection. This subtlety is intimately related to the fact that the timelike part of the torsion is proportional to the exterior derivative of the absolute clock. When the latter is not closed, torsionfreeness and metric-compatibility are thus mutually exclusive. We will explore generalisations of Galilean connections along the two corresponding alternative roads in a series of papers. In the present one, we focus on compatible connections and investigate the equivalence problem (i.e. the search for the necessary data allowing to uniquely determine connections) in the torsionfree and torsional cases. More precisely, we characterise the affine structure of the spaces of such connections and display the associated model vector spaces. In contrast with the relativistic case, the metric structure does not single out a privileged origin for the space of metric-compatible connections. In our construction, the role of the Levi-Civita connection is played by a whole class of privileged origins, the so-called torsional Newton-Cartan (TNC) geometries recently investigated in the literature. Finally, we discuss a generalisation of Newtonian connections to the torsional case.

  3. Field Theory on Newton-Cartan Backgrounds and Symmetries of the Lifshitz Vacuum

    E-Print Network [OSTI]

    Hartong, Jelle; Obers, Niels A

    2015-01-01T23:59:59.000Z

    Holography for Lifshitz space-times corresponds to dual field theories on a fixed torsional Newton-Cartan (TNC) background. We examine the coupling of non-relativistic field theories to TNC backgrounds and uncover a novel mechanism by which a global U(1) can become local. This involves the TNC vector $M_\\mu$ which sources a particle number current, and which for flat NC space-time satisfies $M_{\\mu}=\\partial_{\\mu}M$ with a Schroedinger symmetry realized on $M$. We discuss various toy model field theories on flat NC space-time for which the new mechanism leads to extra global space-time symmetries beyond the generic Lifshitz symmetry, allowing for an enhancement to Schroedinger symmetry. On the holographic side, the source $M$ also appears in the Lifshitz vacuum with exactly the same properties as for flat NC space-time. In particular, the bulk diffeomorphisms that preserve the boundary conditions realize a Schroedinger algebra on $M$, allowing for a conserved particle number current. Finally, we present a pro...

  4. Fourier Resolved Spectroscopy of the XMM-Newton Observations of MCG -6-30-15

    E-Print Network [OSTI]

    I. E. Papadakis; D. Kazanas; A. Akylas

    2005-06-14T23:59:59.000Z

    We study the Frequency Resolved Spectra of the Seyfert galaxy MCG -6-30-15 obtained during two recent XMM-Newton observations. Splitting the Fourier spectra in soft (2 keV) bands, we find that the soft band has a variability amplitude larger than the hard one on time scales longer than 10 ksec, while the opposite is true on time scales shorter than 3 ksec. Both the soft and hard band spectra are well fitted by power laws of different indices. The spectra of the hard band become clearly softer as the Fourier Frequency decreases from 7x10^{-4} Hz to 10^{-5} Hz, while the spectral slope of the soft band power law component is independent of the Fourier frequency. The well known broad Fe Ka feature is absent at all frequency bins; this result implies that this feature is not variable on time scales shorter than ~10^5 sec, in agreement with recent line variability studies. Strong spectral features are also present in the soft X-ray band (at E~0.7), clearly discernible in all Fourier Frequency bins. This fact is consistent with the assumption that they are due to absorption by intervening matter within the source.

  5. A good mass proxy for galaxy clusters with XMM-Newton

    SciTech Connect (OSTI)

    Zhao, Hai-Hui; Jia, Shu-Mei; Chen, Yong; Li, Cheng-Kui; Song, Li-Ming; Xie, Fei, E-mail: zhaohh@ihep.ac.cn [Key Laboratory of Particle Astrophysics, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049 (China)

    2013-12-01T23:59:59.000Z

    We use a sample of 39 galaxy clusters at redshift z < 0.1 observed by XMM-Newton to investigate the relations between X-ray observables and total mass. Based on central cooling time and central temperature drop, the clusters in this sample are divided into two groups: 25 cool core clusters and 14 non-cool core clusters, respectively. We study the scaling relations of L {sub bol}-M {sub 500}, M {sub 500}-T, M {sub 500}-M {sub g}, and M {sub 500}-Y {sub X}, and also the influences of cool core on these relations. The results show that the M {sub 500}-Y {sub X} relation has a slope close to the standard self-similar value, has the smallest scatter and does not vary with the cluster sample. Moreover, the M {sub 500}-Y {sub X} relation is not affected by the cool core. Thus, the parameter of Y{sub X} may be the best mass indicator.

  6. $XMM-Newton$ $?$ project: III. Gas mass fraction shape in high redshift clusters

    E-Print Network [OSTI]

    Rachida Sadat; Alain Blanchard; Sebastien C. Vauclair; David H. Lumb; James Bartlett; A. K. Romer; Jean-Philippe Bernard; Michel Boer; Philippe Marty; Jukka Nevalainen; Douglas J. Burke; C. A. Collins; Robert C. Nichol

    2005-03-19T23:59:59.000Z

    We study the gas mass fraction, $f\\_{\\rm gas},$ behavior in $XMM-Newton$ $\\Omega$ project. The typical $f\\_{\\rm gas}$ shape of high redshift galaxy clusters follows the global shape inferred at low redshift quite well. This result is consistent with the gravitational instability picture leading to self similar structures for both the dark and baryonic matter. However, the mean $f\\_{\\rm gas} in distant clusters shows some differences to local ones, indicating a departure from strict scaling. This result is consistent with the observed evolution in the luminosity-temperature relation. We quantitatively investigate this departure from scaling laws. Within the local sample we used, a moderate but clear variation of the amplitude of the gas mass fraction with temperature is found, a trend that weakens in the outer regions. These variations do not explain departure from scaling laws of our distant clusters. An important implication of our results is that the gas fraction evolution, a test of the cosmological parameters, can lead to biased values when applied at radii smaller than the virial radius. From our $XMM$ clusters, the apparent gas fraction at the virial radius is consistent with a non-evolving universal value in a high matter density model and not with a concordance.

  7. Does the Newton's gravitational constant vary sinusoidally with time? An independent test with planetary orbital motions

    E-Print Network [OSTI]

    Iorio, Lorenzo

    2015-01-01T23:59:59.000Z

    A sinusoidally time-varying pattern for the values of the Newton's constant of gravitation $G$ measured in Earth-based laboratories over the latest decades has been recently reported in the literature. Its amplitude and period amount to $A_G=1.619\\times 10^{-14} \\textrm{kg}^{-1} \\textrm{m}^3 \\textrm{s}^{-2}, P_G=5.899 \\textrm{yr}$, respectively. Given the fundamental role played by $G$ in the currently accepted theory of gravitation and the attempts to merge it with quantum mechanics, it is important to put to the test the hypothesis that the aforementioned harmonic variation may pertain $G$ itself in a direct and independent way. The bounds on $\\dot G/G$ existing in the literature may not be extended straightforwardly to the present case since they were inferred by considering just secular variations. Thus, we numerically integrated the ad-hoc modified equations of motion of the major bodies of the Solar System by finding that the orbits of the planets would be altered by an unacceptably larger amount in vie...

  8. Acid Washed Glass Beads 1. Weigh 50 g of 0.5 mm glass beads (Sigma G-9268, 425-600 m) into a 100 ml-orange cap Pyrex

    E-Print Network [OSTI]

    Aris, John P.

    Acid Washed Glass Beads 1. Weigh 50 g of 0.5 mm glass beads (Sigma G-9268, 425-600 µm) into a 100 ml-orange cap Pyrex bottle. The volume of glass beads should be no more than 1/5 of the volume of the bottle used for washes. To scale up, use 100 g of glass beads and a 250 ml orange cap Pyrex bottle. 2

  9. Using an ultra-thin non-doped orange emission layer to realize high efficiency white organic light-emitting diodes with low efficiency roll-off

    SciTech Connect (OSTI)

    Zhu, Liping; Chen, Jiangshan; Ma, Dongge, E-mail: mdg1014@ciac.ac.cn [State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Graduate University of the Chinese Academy of Sciences, Changchun 130022 (China); Zhao, Yongbiao [Luminous Center of Excellence for Semiconductor Lighting and Displays, School of Electrical and Electronic Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, Singapore 639798 (Singapore); Zhang, Hongmei [Department of Materials Science and Engineering, Nanjing University of Posts and Telecommunications, Nanjing 210023 (China)

    2014-06-28T23:59:59.000Z

    By adopting an ultra-thin non-doped orange emission layer sandwiched between two blue emission layers, high efficiency white organic light-emitting diodes (WOLEDs) with reduced efficiency roll-off were fabricated. The optimized devices show a balanced white emission with Internationale de L'Eclairage of (0.41, 0.44) at the luminance of 1000?cd/m{sup 2}, and the maximum power efficiency, current efficiency (CE), and external quantum efficiency reach 63.2?lm/W, 59.3?cd/A, and 23.1%, which slightly shift to 53.4?lm/W, 57.1?cd/A, and 22.2% at 1000?cd/m{sup 2}, respectively, showing low efficiency roll-off. Detailed investigations on the recombination zone and the transient electroluminescence (EL) clearly reveal the EL processes of the ultra-thin non-doped orange emission layer in WOLEDs.

  10. EA-1841: Department of Energy Loan Guarantee for the Taylor Biomass Montgomery Project in the Town of Montgomery, Orange County, New York

    Broader source: Energy.gov [DOE]

    Taylor Biomass, LLC (Taylor) submitted an application to DOE for a Federal loan guarantee to support the construction and startup of a biomass gasification-to energy facility at a 95-acre recycling facility in the Town of Montgomery, Orange County, NY. The Project would involve the construction of a Post-Collection Separation Facility, a Gasification System and a Combined Cycle Gas Turbine Power Island.

  11. Photocatalytic degradation of methyl orange dye in water solutions in the presence of MWCNT/TiO{sub 2} composites

    SciTech Connect (OSTI)

    Da Dalt, S., E-mail: silvana.da.dalt@ufrgs.br [Department of Material, Federal University of Rio Grande do Sul, Av. Osvaldo Aranha 99, Laboratory 705C, ZIP 90035-190, Porto Alegre, RS (Brazil); Alves, A.K.; Bergmann, C.P. [Department of Material, Federal University of Rio Grande do Sul, Av. Osvaldo Aranha 99, Laboratory 705C, ZIP 90035-190, Porto Alegre, RS (Brazil)

    2013-05-15T23:59:59.000Z

    Highlights: ? MWCNTs/TiO{sub 2} composites were obtained to degrade organic dyes in water. ? MWCNT/TiO{sub 2} composites were analyzed by photocatalysis and structural characterization. ? The photocatalytic shows efficient method for the degradation of dyes from aqueous effluents. - Abstract: The textile and dyestuff industries are the primary sources of the release of synthetic dyes into the environment and usually there are major pollutants in dye wastewaters. Because of their toxicity and slow degradation, these dyes are categorized as environmentally hazardous materials. In this context, carbon nanotubes/TiO{sub 2} (CNTs/TiO{sub 2}) composites were prepared using multi-walled CNTs (MWCNTs), titanium (IV) propoxide and commercial TiO{sub 2} (P25{sup ®}) as titanium oxide sources, to degrade the methyl orange dye in solution through photocatalyst activity using UV irradiation. The composites were prepared by solution processing followed by thermal treatment at 400, 500 and 600 °C. The heterojunction between nanotubes and TiO{sub 2} was confirmed by XRD, specific surface area. The coating morphology was observed with SEM and TEM.

  12. XMM-Newton Spectroscopy of the Cluster of Galaxies 2a 0335+096

    SciTech Connect (OSTI)

    Werner, Norbert; /SRON, Utrecht; de Plaa, J.; /SRON, Utrecht /Utrecht U.; Kaastra, J.S.; /SRON, Utrecht; Vink, Jacco; Bleeker, J.A.M.; /SRON, Utrecht /Utrecht U.; Tamura, T. /Sagamihara, Inst. Space Astron. Sci.; Peterson, J.R.; /KIPAC, Menlo Park; Verbunt, F.; /Utrecht U.

    2006-01-17T23:59:59.000Z

    We present here the results of a deep (130 ks) XMM-Newton observation of the cluster of galaxies 2A 0335+096. The deep exposure allows us to study in detail its temperature structure and its elemental abundances. We fit three different thermal models and find that the multi-temperature wdem model fits our data best. We find that the abundance structure of the cluster is consistent with a scenario where the relative number of Type Ia supernovae contributing to the enrichment of the intra-cluster medium is {approx}25%, while the relative number of core collapse supernovae is {approx}75%. Comparison of the observed abundances to the supernova yields does not allow us to put any constrains on the contribution of Pop III stars to the enrichment of the ICM. Radial abundance profiles show a strong central peak of both Type Ia and core collapse supernova products. Both the temperature and iron abundance maps show an asymmetry in the direction of the elongated morphology of the surface brightness. In particular the temperature map shows a sharp change over a brightness edge on the southern side of the core, which was identified as a cold front in the Chandra data. This suggests that the cluster is in the process of a merger with a subcluster. Moreover, we find that the blobs or filaments discovered in the core of the cluster by Chandra are, contrary to the previous results, colder than the ambient gas and they appear to be in pressure equilibrium with their environment.

  13. XMM-NEWTON VIEW OF SWIFT J1834.9-0846 AND ITS MAGNETAR WIND NEBULA

    SciTech Connect (OSTI)

    Younes, G. [Universities Space Research Association, 6767 Old Madison Pike NW, Suite 450, Huntsville, AL 35806 (United States); Kouveliotou, C. [NSSTC, 320 Sparkman Drive, Huntsville, AL 35805 (United States); Kargaltsev, O. [Department of Astronomy, University of Florida, Bryant Space Science Center, Gainesville, FL 32611 (United States); Pavlov, G. G. [Department of Astronomy and Astrophysics, Pennsylvania State University, 525 Davey Lab, University Park, PA 16802 (United States); Goegues, E. [Faculty of Engineering and Natural Sciences, Sabanc Latin-Small-Letter-Dotless-I University, Orhanl Latin-Small-Letter-Dotless-I -Tuzla, Istanbul 34956 (Turkey); Wachter, S. [Infrared Processing and Analysis Center, California Institute of Technology, Pasadena, CA 91125 (United States)

    2012-09-20T23:59:59.000Z

    We report on the analysis of two XMM-Newton observations of the recently discovered soft gamma repeater Swift J1834.9-0846, taken in 2005 September and one month after the source went into outburst on 2011 August 7. We performed timing and spectral analyses on the point source as well as on the extended emission. We find that the source period is consistent with an extrapolation of the Chandra ephemeris reported earlier and the spectral properties remained constant. The source luminosity decreased to a level of 1.6 Multiplication-Sign 10{sup 34} erg s{sup -1} following a decay trend of {proportional_to}t {sup -0.5}. Our spatial analysis of the source environment revealed the presence of two extended emission regions around the source. The first (region A) is a symmetric ring around the point source, starting at 25'' and extending to {approx}50''. We argue that region A is a dust scattering halo. The second (region B) has an asymmetrical shape extending between 50'' and 150'', and is detected both in the pre- and post-outburst data. We argue that this region is a possible magnetar wind nebula (MWN). The X-ray efficiency of the MWN with respect to the rotation energy loss is substantially higher than those of rotation-powered pulsars. The higher efficiency points to a different energy source for the MWN of Swift J1834.9-0846, most likely bursting activity of the magnetar, powered by its high magnetic field, B = 1.4 Multiplication-Sign 10{sup 14} G.

  14. Chemical evolution in Sersic 159-03 observed with XMM-Newton

    E-Print Network [OSTI]

    J. de Plaa; N. Werner; A. M. Bykov; J. S. Kaastra; M. Mendez; J. Vink; J. A. M. Bleeker; M. Bonamente; J. R. Peterson

    2006-02-27T23:59:59.000Z

    Using a new long X-ray observation of the cluster of galaxies Sersic 159-03 with XMM-Newton, we derive radial temperature and abundance profiles using single- and multi-temperature models. The fits to the EPIC and RGS spectra prefer multi-temperature models especially in the core. The radial profiles of oxygen and iron measured with EPIC/RGS and the line profiles in RGS suggest that there is a dip in the O/Fe ratio in the centre of the cluster compared to its immediate surroundings. A possible explanation for the large scale metallicity distribution is that SNIa and SNII products are released in the ICM through ram-pressure stripping of in-falling galaxies. This causes a peaked metallicity distribution. In addition, SNIa in the central cD galaxy enrich mainly the centre of the cluster with iron. This excess of SNIa products is consistent with the low O/Fe ratio we detect in the centre of the cluster. We fit the abundances we obtain with yields from SNIa, SNII and Population-III stars to derive the clusters chemical evolution. We find that the measured abundance pattern does not require a Population-III star contribution. The relative contribution of the number of SNIa with respect to the total number of SNe which enrich the ICM is about 25-50%. Furthermore, we discuss the possible presence of a non-thermal component in the EPIC spectra. A potential source of this non-thermal emission can be inverse-Compton scattering between Cosmic Microwave Background (CMB) photons and relativistic electrons, which are accelerated in bow shocks associated with ram-pressure stripping of in-falling galaxies.

  15. An investigation of Newton-Krylov algorithms for solving incompressible and low Mach number compressible fluid flow and heat transfer problems using finite volume discretization

    SciTech Connect (OSTI)

    McHugh, P.R.

    1995-10-01T23:59:59.000Z

    Fully coupled, Newton-Krylov algorithms are investigated for solving strongly coupled, nonlinear systems of partial differential equations arising in the field of computational fluid dynamics. Primitive variable forms of the steady incompressible and compressible Navier-Stokes and energy equations that describe the flow of a laminar Newtonian fluid in two-dimensions are specifically considered. Numerical solutions are obtained by first integrating over discrete finite volumes that compose the computational mesh. The resulting system of nonlinear algebraic equations are linearized using Newton`s method. Preconditioned Krylov subspace based iterative algorithms then solve these linear systems on each Newton iteration. Selected Krylov algorithms include the Arnoldi-based Generalized Minimal RESidual (GMRES) algorithm, and the Lanczos-based Conjugate Gradients Squared (CGS), Bi-CGSTAB, and Transpose-Free Quasi-Minimal Residual (TFQMR) algorithms. Both Incomplete Lower-Upper (ILU) factorization and domain-based additive and multiplicative Schwarz preconditioning strategies are studied. Numerical techniques such as mesh sequencing, adaptive damping, pseudo-transient relaxation, and parameter continuation are used to improve the solution efficiency, while algorithm implementation is simplified using a numerical Jacobian evaluation. The capabilities of standard Newton-Krylov algorithms are demonstrated via solutions to both incompressible and compressible flow problems. Incompressible flow problems include natural convection in an enclosed cavity, and mixed/forced convection past a backward facing step.

  16. Dynamically polarized target for the gp2 and GpE experiments at Jefferson Lab

    SciTech Connect (OSTI)

    Pierce, Joshua J. [JLAB, Newport News, VA (United States); Maxwell, James D. [MIT, Amherst, MA (United States); Badman, Toby E. [Univ. of New Hampshire, Durham, NH (United States); Brock, James D. [JLAB, Newport News, VA (United States); Carlin, Christopher R. [JLAB, Newport News, VA (United States); Crabb, Donald G. [Univ. of Virginia, Charlottesville, VA (United States); Day, Donal B. [Univ. of Virginia, Charlottesville, VA (United States); Keith, Christopher D. [JLAB, Newport News, VA (United States); Kvaltine, Nicholas D. [Univ. of Virginia, Charlottesville, VA (United States); Meekins, David G. [JLAB, Newport News, VA (United States); Mulholland, Jonathan R.L. [Univ. of Tennessee, Knoxville, TN (United States); Shields, Joshua A. [Univ. of Virginia, Charlottesville, VA (United States); Slifer, Karl J. [Univ. of New Hampshire, Durham, NH (United States)

    2014-02-01T23:59:59.000Z

    We describe a dynamically polarized target that has been utilized for two electron scattering experiments in Hall A at Jefferson Lab. The primary components of the target are a new, high cooling power 4 He evaporation refrigerator, and a re-purposed, superconducting split-coil magnet. It has been used to polarize protons in irradiated NH3 at a temperature of 1 K and at fields of 2.5 and 5.0 Tesla. The performance of the target material in the electron beam under these conditions will be discussed. Maximum polarizations of 28% and 95% were obtained at those fields, respectively. To satisfy the requirements of both experiments, the magnet had to be routinely rotated between angles of 0, 6, and 90 degrees with respect to the incident electron beam. This was accomplished using a new rotating vacuum seal which permits rotations to be performed in only a few minutes.

  17. Dynamically polarized target for the g{sub 2}{sup p} and G{sub E}{sup p} experiments at Jefferson Lab

    SciTech Connect (OSTI)

    Pierce, Joshua J. [JLAB, Newport News, VA (United States); Maxwell, James D. [MIT, Amherst, MA (United States); Keith, Christopher D. [JLAB, Newport News, VA (United States)

    2014-01-01T23:59:59.000Z

    Recently, two experiments were concluded in Hall A at Jefferson Lab which utilized a newly assembled, solid, polarized hydrogen target. The primary components of the target are a new, high cooling power {sup 4}He evaporation refrigerator, and a re-purposed, superconducting split-coil magnet. It has been used to polarize protons in irradiated NH{sub 3} at a temperature of 1 K and at fields of 2.5 and 5.0 tesla. Maximum polarizations of 55% and 95% were obtained at those fields, respectively. To satisfy the requirements of both experiments, the magnet had to be routinely rotated between angles of 0 deg, 6 deg, and 90 deg with respect to the incident electron beam.

  18. Light Vector Meson Photoproduction off of 1H at Jefferson Lab and p-w Interference in the Leptonic Decay Channel

    SciTech Connect (OSTI)

    Djalali, Chaden [University of Iowa; Paolone, Michael [Temple University, JLAB; Weygand, Dennis; Wood, Mike H. [USC LA, JLAB

    2014-09-01T23:59:59.000Z

    Although the phenomena of r – w interference has been studied at great length in pionic decay channel over the past 50 years, a study of the interference in a purely electromagnetic production and decay channel has never been performed on an elementary proton target until now. The only published photo-production data of the r - w leptonic decay channel was obtained in the early seventies on C and Be. An investigation of the r - w interference on a Hydrogen was recently completed at Jefferson Lab with the CLAS detector. The di-lepton spectra was fit with two inter- fering relativistic Breit-Wigner functions, and the interference phase was extracted. Preliminary results will be compared to the previous experimental studies in nuclei.

  19. The XMM-Newton Survey in the Marano Field I. The X-ray data and optical follow-up

    E-Print Network [OSTI]

    M. Krumpe; G. Lamer; A. D. Schwope; S. Wagner; G. Zamorani; M. Mignoli; R. Staubert; L. Wisotzki; G. Hasinger

    2006-12-14T23:59:59.000Z

    We report on a medium deep XMM-Newton survey of the Marano Field and optical follow-up observations. The mosaicked XMM-Newton pointings in this optical quasar survey field cover 0.6 square degree with a total of 120 ksec good observation time. We detected 328 X-ray sources in total. The turnover flux of our sample is f~5x10^(-15) erg/cm^2/s in the 0.2-10 keV band. With VLT FORS1 and FORS2 spectroscopy we classified 96 new X-ray counterparts. The central 0.28 square degree, where detailed optical follow-up observations were performed, contain 170 X-ray sources (detection likelihood ML>10), out of which 48 had already been detected by ROSAT. In this region we recover 23 out of 29 optically selected quasars. With a total of 110 classifications in our core sample we reach a completeness of ~65%. About one third of the XMM-Newton sources is classified as type II AGN with redshifts mostly below 1.0. Furthermore, we detect five high redshift type II AGN (2.2

  20. Origin of the logarithmic correction to the Newton's law in the presence of a homogeneous gas of wormholes

    E-Print Network [OSTI]

    A. A. Kirillov; E. P. Savelova

    2015-05-16T23:59:59.000Z

    We suggest a new scenario in which the Universe starts its evolution with a fractal topological structure. This structure is described by a gas of wormholes. It is shown that the polarization of such a gas in external fields possesses a spatial dispersion, which results in a modification of the Newton's law. The dependence on scales is determined by the distribution of distances between throat ends. The observed in galaxies logarithmic correction confirms that the distribution has fractal properties. We also discus the possibility of restoring such a distribution from observations.

  1. Jefferson Lab Employee Activities

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  11. Facilities | Jefferson Lab

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  12. IT Division | Jefferson Lab

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  13. International Services | Jefferson Lab

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  14. Jefferson Lab: Research Highlights

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  15. Job Openings | Jefferson Lab

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  16. Media Kit | Jefferson Lab

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  17. News Media | Jefferson Lab

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  18. News Releases | Jefferson Lab

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  19. News Stories | Jefferson Lab

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  20. Spring Challenges | Jefferson Lab

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