National Library of Energy BETA

Sample records for accelerator center slac

  1. 2011 Annual Planning Summary for Stanford Linear Accelerator Center Site Office (SLAC)

    Broader source: Energy.gov [DOE]

    The ongoing and projected Environmental Assessments and Environmental Impact Statements for 2011 and 2012 within the Stanford Linear Accelerator Center Site Office (SLAC SO) (See also Science).

  2. SLAC National Accelerator Laboratory Technology Marketing Summaries...

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

    SLAC National Accelerator Laboratory Technology Marketing Summaries Here you'll find marketing summaries for technologies available for licensing from the SLAC National Accelerator...

  3. SLAC National Accelerator Laboratory

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

    with a Diamondoid Tip Adding a Layer of Tiny Diamonds Could Boost the Power of Electron Guns Used in Research and Industry Prev Next Headlines SLAC's Stanley Brodsky Shares...

  4. SLAC National Accelerator Laboratory FACET & TEST BEAM FACILITIES...

    Office of Scientific and Technical Information (OSTI)

    SLAC National Accelerator Laboratory FACET & TEST BEAM FACILITIES PROPOSAL Citation Details In-Document Search Title: SLAC National Accelerator Laboratory FACET & TEST BEAM ...

  5. Kwok Ko SLAC National Accelerator Laboratory

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

    Kwok Ko SLAC National Accelerator Laboratory Work supported by US DOE Offices of HEP, ASCR and BES under contract AC02-76SF00515. Large Scale Computing and Storage Requirements for High Energy Physics Rockville, MD, November 27-28, 2012 Present and Future Computing Requirements for Advanced Modeling for Particle Accelerator 1. Advanced Modeling for Particle Accelerators (AMPA) NERSC Repositories: m349 Principal Investigator: K. Ko Senior Investigators: SLAC - L. Ge, Z. Li, C. Ng, L. Xiao, FNAL -

  6. Secretary Chu Speaks at SLAC National Accelerator Laboratory

    Office of Energy Efficiency and Renewable Energy (EERE)

    On Friday, August 24, 2012, Secretary Chu gave a speech commemorating the 50th Anniversary of SLAC National Accelerator Laboratory. You can find the powerpoint presentation below.

  7. SLAC National Accelerator Laboratory FACET & TEST BEAM FACILITIES...

    Office of Scientific and Technical Information (OSTI)

    Laboratory FACET & TEST BEAM FACILITIES PROPOSAL Citation Details In-Document Search Title: SLAC National Accelerator Laboratory FACET & TEST BEAM FACILITIES PROPOSAL ...

  8. Preliminary Notice of Violation, SLAC National Accelerator Laboratory -

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

    WEA-2009-01 | Department of Energy SLAC National Accelerator Laboratory - WEA-2009-01 Preliminary Notice of Violation, SLAC National Accelerator Laboratory - WEA-2009-01 April 3, 2009 This letter refers to the Department of Energy's (DOE) Office of Health, Safety and Security's Office of Enforcement investigation into the facts and circumstances associated with the September 13, 2007 On April 3, 2009, the U.S. Department of Energy (DOE) Office of Health, Safety and Security's Office of

  9. SLAC National Accelerator Laboratory Technologies Available for Licensing -

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

    Energy Innovation Portal SLAC Site Map Printable Version Share this resource About Search Categories (15) Advanced Materials Biomass and Biofuels Building Energy Efficiency Electricity Transmission Energy Analysis Energy Storage Geothermal Hydrogen and Fuel Cell Hydropower, Wave and Tidal Industrial Technologies Solar Photovoltaic Solar Thermal Startup America Vehicles and Fuels Wind Energy Partners (27) Visual Patent Search Success Stories SLAC National Accelerator Laboratory Technologies

  10. Labs at-a-Glance: SLAC National Accelerator Laboratory | U.S. DOE Office of

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

    Science (SC) SLAC National Accelerator Laboratory Laboratories Laboratories Home Ames Laboratory Argonne National Laboratory Brookhaven National Laboratory Fermi National Accelerator Laboratory Lawrence Berkeley National Laboratory Oak Ridge National Laboratory Pacific Northwest National Laboratory Princeton Plasma Physics Laboratory SLAC National Accelerator Laboratory Thomas Jefferson National Accelerator Facility Laboratory Science Highlights Laboratory News Contact Information Office of

  11. Notice of Violation, SLAC National Accelerator Laboratory - WEA-2009-01 |

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

    Department of Energy SLAC National Accelerator Laboratory - WEA-2009-01 Notice of Violation, SLAC National Accelerator Laboratory - WEA-2009-01 September 3, 2009 Issued to Stanford University related to a PVC Pipe Explosion at the SLAC National Accelerator Laboratory On September 3, 2009, the U.S. Department of Energy (DOE) Office of Health, Safety and Security's Office of Enforcement issued a Final Notice of Violation (WEA-2009-01) to Stanford University for violations of 10 C.F.R. 851

  12. DOE - Office of Legacy Management -- Stanford Linear Accelerator Center -

    Office of Legacy Management (LM)

    005 Stanford Linear Accelerator Center - 005 FUSRAP Considered Sites Site: Stanford Linear Accelerator Center (005) More information at www.slac.stanford.edu Designated Name: Not Designated under FUSRAP Alternate Name: SLAC Location: Palo Alto, California Evaluation Year: Not considered for FUSRAP - in another program Site Operations: Research Site Disposition: Remediation completed by DOE Office of Environmental Management in 2014. DOE Office of Science is responsible for long-term

  13. Using The SLAC Two-Mile Accelerator for Powering an FEL

    SciTech Connect (OSTI)

    Barletta, W.A.; Sessler, A.M.; Yu, L.H.; /Brookhaven

    2012-06-29

    A parameter survey is made, employing the recently developed 2D formalism for an FEL, of the characteristics of an FEL using the SLAC accelerator. Attention is focused upon a wavelength of 40 {angstrom} (the water window) and 1 {angstrom} case is also presented. They consider employing the SLAC linac with its present operating parameters and with improved parameters such as would be supplied by a new photo-cathode injector. They find that improved parameters are necessary, but that the parameters presently achieved with present-day photo-cathode guns are adequate to reach the water window.

  14. High Frequency, High Gradient Dielectric Wakefield Acceleration Experiments at SLAC and BNL

    SciTech Connect (OSTI)

    Rosenzweig, James; Travish, Gil; Hogan, Mark; Muggli, Patric; /Southern California U.

    2012-07-05

    Given the recent success of >GV/m dielectric wakefield accelerator (DWA) breakdown experiments at SLAC, and follow-on coherent Cerenkov radiation production at the UCLA Neptune, a UCLA-USC-SLAC collaboration is now implementing a new set of experiments that explore various DWA scenarios. These experiments are motivated by the opportunities presented by the approval of FACET facility at SLAC, as well as unique pulse-train wakefield drivers at BNL. The SLAC experiments permit further exploration of the multi-GeV/m envelope in DWAs, and will entail investigations of novel materials (e.g. CVD diamond) and geometries (Bragg cylindrical structures, slab-symmetric DWAs), and have an over-riding goal of demonstrating >GeV acceleration in {approx}33 cm DWA tubes. In the nearer term before FACET's commissioning, we are planning measurements at the BNL ATF, in which we drive {approx}50-200 MV/m fields with single pulses or pulse trains. These experiments are of high relevance to enhancing linear collider DWA designs, as they will demonstrate potential for efficient operation with pulse trains.

  15. High Frequency, High Gradient Dielectric Wakefield Acceleration Experiments at SLAC and BNL

    SciTech Connect (OSTI)

    Rosenzweig, J. B.; Andonian, G.; Niknejadi, P.; Travish, G.; Williams, O.; Xuan, K.; Muggli, P.; Yakimenko, V.

    2010-11-04

    Given the recent success of >GV/m dielectric wakefield accelerator (DWA) breakdown experiments at SLAC, and follow-on coherent Cerenkov radiation (CCR) production at the UCLA Neptune, a UCLA-USC-SLAC collaboration is now implementing a new set of experiments that explore various DWA scenarios. These experiments are motivated by the opportunities presented by the approval of the FACET facility at SLAC, as well as unique pulse-train wakefield drivers at BNL. The SLAC experiments permit further exploration of the multi-GeV/m envelope in DWAs, and will entail investigations of novel materials (e.g. CVD diamond) and geometries (Bragg cylindrical structures, slab-symmetric DWAs), and have an over-riding goal of demonstrating >GeV acceleration in {approx}33 cm DWA tubes. In the nearer term before FACET's commissioning, we are performing measurements at the BNL ATF, in which we drive {approx}50-200 MV/m fields with single pulses or pulse trains, and observe resonantly driven CCR as well as deflection modes. These experiments are of high relevance to enhancing linear collider DWA designs, as they will demonstrate potential for high efficiency operation with pulse trains, and explore transverse modes for the first time.

  16. SLAC National Accelerator Laboratory | U.S. DOE Office of Science (SC)

    Office of Science (SC) Website

    SLAC National Accelerator Laboratory Laboratory Policy (LP) LP Home About Laboratory Appraisal Process FY 2015 Report Cards FY 2014 Report Cards FY 2013 Report Cards Report Card Archives Laboratory Planning Process Laboratory Directed Research and Development (LDRD) Management & Operating (M&O) Contracts Technology Transfer Strategic Partnership Projects (SPP) Contact Information Laboratory Policy U.S. Department of Energy SC-32/Forrestal Building 1000 Independence Ave., SW Washington,

  17. SLAC National Accelerator Laboratory | U.S. DOE Office of Science (SC)

    Office of Science (SC) Website

    SLAC National Accelerator Laboratory Laboratory Policy (LP) LP Home About Laboratory Appraisal Process FY 2015 Report Cards FY 2014 Report Cards FY 2013 Report Cards Report Card Archives Laboratory Planning Process Laboratory Directed Research and Development (LDRD) Management & Operating (M&O) Contracts Technology Transfer Strategic Partnership Projects (SPP) Contact Information Laboratory Policy U.S. Department of Energy SC-32/Forrestal Building 1000 Independence Ave., SW Washington,

  18. SLAC National Accelerator Laboratory | U.S. DOE Office of Science (SC)

    Office of Science (SC) Website

    SLAC National Accelerator Laboratory Laboratory Policy (LP) LP Home About Laboratory Appraisal Process FY 2015 Report Cards FY 2014 Report Cards FY 2013 Report Cards Report Card Archives Laboratory Planning Process Laboratory Directed Research and Development (LDRD) Management & Operating (M&O) Contracts Technology Transfer Strategic Partnership Projects (SPP) Contact Information Laboratory Policy U.S. Department of Energy SC-32/Forrestal Building 1000 Independence Ave., SW Washington,

  19. SLAC National Accelerator Laboratory | U.S. DOE Office of Science (SC)

    Office of Science (SC) Website

    SLAC National Accelerator Laboratory Laboratory Policy (LP) LP Home About Laboratory Appraisal Process FY 2015 Report Cards FY 2014 Report Cards FY 2013 Report Cards Report Card Archives Laboratory Planning Process Laboratory Directed Research and Development (LDRD) Management & Operating (M&O) Contracts Technology Transfer Strategic Partnership Projects (SPP) Contact Information Laboratory Policy U.S. Department of Energy SC-32/Forrestal Building 1000 Independence Ave., SW Washington,

  20. SLAC National Accelerator Laboratory | U.S. DOE Office of Science (SC)

    Office of Science (SC) Website

    SLAC National Accelerator Laboratory Laboratory Policy (LP) LP Home About Laboratory Appraisal Process FY 2015 Report Cards FY 2014 Report Cards FY 2013 Report Cards Report Card Archives Laboratory Planning Process Laboratory Directed Research and Development (LDRD) Management & Operating (M&O) Contracts Technology Transfer Strategic Partnership Projects (SPP) Contact Information Laboratory Policy U.S. Department of Energy SC-32/Forrestal Building 1000 Independence Ave., SW Washington,

  1. SLAC National Accelerator Laboratory | U.S. DOE Office of Science (SC)

    Office of Science (SC) Website

    SLAC National Accelerator Laboratory Laboratory Policy (LP) LP Home About Laboratory Appraisal Process FY 2015 Report Cards FY 2014 Report Cards FY 2013 Report Cards Report Card Archives Laboratory Planning Process Laboratory Directed Research and Development (LDRD) Management & Operating (M&O) Contracts Technology Transfer Strategic Partnership Projects (SPP) Contact Information Laboratory Policy U.S. Department of Energy SC-32/Forrestal Building 1000 Independence Ave., SW Washington,

  2. SLAC National Accelerator Laboratory | U.S. DOE Office of Science (SC)

    Office of Science (SC) Website

    SLAC National Accelerator Laboratory Laboratory Policy (LP) LP Home About Laboratory Appraisal Process FY 2015 Report Cards FY 2014 Report Cards FY 2013 Report Cards Report Card Archives Laboratory Planning Process Laboratory Directed Research and Development (LDRD) Management & Operating (M&O) Contracts Technology Transfer Strategic Partnership Projects (SPP) Contact Information Laboratory Policy U.S. Department of Energy SC-32/Forrestal Building 1000 Independence Ave., SW Washington,

  3. SLAC National Accelerator Laboratory | U.S. DOE Office of Science (SC)

    Office of Science (SC) Website

    SLAC National Accelerator Laboratory Laboratory Policy (LP) LP Home About Laboratory Appraisal Process FY 2015 Report Cards FY 2014 Report Cards FY 2013 Report Cards Report Card Archives Laboratory Planning Process Laboratory Directed Research and Development (LDRD) Management & Operating (M&O) Contracts Technology Transfer Strategic Partnership Projects (SPP) Contact Information Laboratory Policy U.S. Department of Energy SC-32/Forrestal Building 1000 Independence Ave., SW Washington,

  4. SLAC National Accelerator Laboratory | U.S. DOE Office of Science (SC)

    Office of Science (SC) Website

    SLAC National Accelerator Laboratory Laboratory Policy (LP) LP Home About Laboratory Appraisal Process FY 2015 Report Cards FY 2014 Report Cards FY 2013 Report Cards Report Card Archives Laboratory Planning Process Laboratory Directed Research and Development (LDRD) Management & Operating (M&O) Contracts Technology Transfer Strategic Partnership Projects (SPP) Contact Information Laboratory Policy U.S. Department of Energy SC-32/Forrestal Building 1000 Independence Ave., SW Washington,

  5. SLAC National Accelerator Laboratory | U.S. DOE Office of Science (SC)

    Office of Science (SC) Website

    SLAC National Accelerator Laboratory Laboratory Policy (LP) LP Home About Laboratory Appraisal Process FY 2015 Report Cards FY 2014 Report Cards FY 2013 Report Cards Report Card Archives Laboratory Planning Process Laboratory Directed Research and Development (LDRD) Management & Operating (M&O) Contracts Technology Transfer Strategic Partnership Projects (SPP) Contact Information Laboratory Policy U.S. Department of Energy SC-32/Forrestal Building 1000 Independence Ave., SW Washington,

  6. EA-1975: LINAC Coherent Light Source-Il, SLAC National Accelerator Laboratory, Menlo Park, California

    Broader source: Energy.gov [DOE]

    DOE prepared an EA on the potential environmental impacts of a proposal to upgrade the existing LINAC Coherent Light Source (LCLS) at the SLAC National Accelerator Laboratory. The proposed LCLS-II would extend the photon energy range, increase control over photon pulses, and enable two-color pump-probe experiments. The X-ray laser beams generated by LCLS-II would enable a new class of experiments: the simultaneous investigation of a material’s electronic and structural properties.

  7. Mega-electron-volt ultrafast electron diffraction at SLAC National Accelerator Laboratory

    SciTech Connect (OSTI)

    Weathersby, S. P.; Brown, G.; Centurion, M.; Chase, T. F.; Coffee, R.; Corbett, J.; Eichner, J. P.; Frisch, J. C.; Fry, A. R.; Gühr, M.; Hartmann, N.; Hast, C.; Hettel, R.; Jobe, R. K.; Jongewaard, E. N.; Lewandowski, J. R.; Li, R. K.; Lindenberg, A. M.; Makasyuk, I.; May, J. E.; McCormick, D.; Nguyen, M. N.; Reid, A. H.; Shen, X.; Sokolowski-Tinten, K.; Vecchione, T.; Vetter, S. L.; Wu, J.; Yang, J.; Dürr, H. A.; Wang, X. J.

    2015-07-01

    Ultrafast electron probes are powerful tools, complementary to x-ray free-electron lasers, used to study structural dynamics in material, chemical, and biological sciences. High brightness, relativistic electron beams with femtosecond pulse duration can resolve details of the dynamic processes on atomic time and length scales. SLAC National Accelerator Laboratory recently launched the Ultrafast Electron Diffraction (UED) and microscopy Initiative aiming at developing the next generation ultrafast electron scattering instruments. As the first stage of the Initiative, a mega-electron-volt (MeV) UED system has been constructed and commissioned to serve ultrafast science experiments and instrumentation development. The system operates at 120-Hz repetition rate with outstanding performance. In this paper, we report on the SLAC MeV UED system and its performance, including the reciprocal space resolution, temporal resolution, and machine stability.

  8. SLAC Linac Coherent Light Source

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

    LCLS Sign In Launch the Developer Dashboard SLAC National Accelerator Laboratory DOE | Stanford | SLAC | SSRL | LCLS | AD | PPA | Photon Science | PULSE | SIMES LCLS : Linac...

  9. Plasma Wakefield Acceleration and FACET - Facilities for Accelerator Science and Experimental Test Beams at SLAC

    ScienceCinema (OSTI)

    Andrei Seryi

    2010-01-08

    Plasma wakefield acceleration is one of the most promising approaches to advancing accelerator technology. This approach offers a potential 1,000-fold or more increase in acceleration over a given distance, compared to existing accelerators.  FACET, enabled by the Recovery Act funds, will study plasma acceleration, using short, intense pulses of electrons and positrons. In this lecture, the physics of plasma acceleration and features of FACET will be presented.  

  10. SLAC-Built Detector Prepares for Life at Jefferson Lab (SLAC...

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

    SLAC-Built Detector Prepares for Life at Jefferson Lab (SLAC News Center) External Link: https:news.slac.stanford.eduimageslac-built-detector-prepares-life-jefferson... By ...

  11. Environmental Survey preliminary report, Stanford Linear Accelerator Center, Stanford, California

    SciTech Connect (OSTI)

    Not Available

    1988-07-01

    This report presents the preliminary findings from the first phase of the Survey of the US Department of Energy (DOE) Stanford Linear Accelerator Center (SLAC) at Stanford, California, conducted February 29 through March 4, 1988. The Survey is being conducted by an interdisciplinary team of environmental specialists, led and managed by the Office of Environment, Safety and Health's Office of Environmental Audit. Individual team components are being supplied by a private contractor. The objective of the Survey is to identify environmental problems and areas of environmental risk associated with the SLAC. The Survey covers all environmental media and all areas of environmental regulation and is being performed in accordance with the DOE Environmental Survey Manual. This phase of the Survey involves the review of existing site environmental data, observations of the operations at the SLAC, and interviews with site personnel. The Survey team is developing a Sampling and Analysis Plan to assist in further assessing certain of the environmental problems identified during its on-site activities. The Sampling and Analysis Plan will be executed by a DOE National Laboratory or a support contractor. When completed, the results will be incorporated into the Environmental Survey Interim Report for the SLAC facility. The Interim Report will reflect the final determinations of the SLAC Survey. 95 refs., 25 figs., 25 tabs.

  12. Facility for Advanced Accelerator Experimental Tests at SLAC (FACET) Conceptual Design Report

    SciTech Connect (OSTI)

    Amann, J.; Bane, K.; /SLAC

    2009-10-30

    This Conceptual Design Report (CDR) describes the design of FACET. It will be updated to stay current with the developing design of the facility. This CDR begins as the baseline conceptual design and will evolve into an 'as-built' manual for the completed facility. The Executive Summary, Chapter 1, gives an introduction to the FACET project and describes the salient features of its design. Chapter 2 gives an overview of FACET. It describes the general parameters of the machine and the basic approaches to implementation. The FACET project does not include the implementation of specific scientific experiments either for plasma wake-field acceleration for other applications. Nonetheless, enough work has been done to define potential experiments to assure that the facility can meet the requirements of the experimental community. Chapter 3, Scientific Case, describes the planned plasma wakefield and other experiments. Chapter 4, Technical Description of FACET, describes the parameters and design of all technical systems of FACET. FACET uses the first two thirds of the existing SLAC linac to accelerate the beam to about 20GeV, and compress it with the aid of two chicanes, located in Sector 10 and Sector 20. The Sector 20 area will include a focusing system, the generic experimental area and the beam dump. Chapter 5, Management of Scientific Program, describes the management of the scientific program at FACET. Chapter 6, Environment, Safety and Health and Quality Assurance, describes the existing programs at SLAC and their application to the FACET project. It includes a preliminary analysis of safety hazards and the planned mitigation. Chapter 7, Work Breakdown Structure, describes the structure used for developing the cost estimates, which will also be used to manage the project. The chapter defines the scope of work of each element down to level 3.

  13. SLAC All Access: FACET

    ScienceCinema (OSTI)

    Hogan, Mark

    2014-09-15

    SLAC's Facility for Advanced Accelerator Experimental Tests, or FACET, is a test-bed where researchers are developing the technologies required for particle accelerators of the future. Scientists from all over the world come to explore ways of improving the power and efficiency of the particle accelerators used in basic research, medicine, industry and other areas important to society. In this video, Mark Hogan, head of SLAC's Advanced Accelerator Research Department, offers a glimpse into FACET, which uses part of SLAC's historic two-mile-long linear accelerator.

  14. Photo of the Week: Lego Rendition of SLAC National Laboratory...

    Energy Savers [EERE]

    See an actual photo of the SLAC linac. | Photo courtesy of Greg Stewart, SLAC National Accelerator Laboratory. Sarah Gerrity Sarah Gerrity Former Multimedia Editor, Office of ...

  15. Fermilab | Illinois Accelerator Research Center | Illinois Accelerator...

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

    Center will provide approximately 83,000 square feet of technical, office and classroom space for scientists and industrial partners. More pictures of the finished building. The...

  16. Microsoft Word - poa_slac_ind2012

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

    NATIONAL ACCELERATOR LABORATORY * 2575 SAND HILL ROAD * MENLO PARK * CALIFORNIA * 94025 * USA SLAC is operated by Stanford University for the U.S. Department of Energy STANFORD...

  17. SLAC Accelerator Test Facilities

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

    FACET & TF Careers & Education Archived FACET User Facility Quick Launch About FACET & Test Facilities Expand About FACET & Test Facilities FACET & Test Facilities User Portal...

  18. 2010 Annual Planning Summary for Stanford Linear Accelerator Center Site Office (SLAC)

    Broader source: Energy.gov [DOE]

    Annual Planning Summaries briefly describe the status of ongoing NEPA compliance activities, any EAs expected to be prepared in the next 12 months, any EISs expected to be prepared in the next 24...

  19. SLAC Access Update | Stanford Synchrotron Radiation Lightsource

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

    SLAC Access Update Effective October 2015, visit the SUSB VUE Center for badging and SLAC access. Before traveling to SLAC, please complete these procedures. 1. Register through the user portal to provide or update contact information; also confirm your proximity access/expiration through the user portal. 2. Alert us of all experimenters who will participate in scheduled experiments by listing everyone on proposals & beam time/support requests. Contact URA to add additional members to your

  20. SLAC All Access: Vacuum Microwave Device Department

    ScienceCinema (OSTI)

    Haase, Andy

    2014-06-13

    The Vacuum Microwave Device Department (VMDD) builds the devices that make SLAC's particle accelerators go. These devices, called klystrons, generate intense waves of microwave energy that rocket subatomic particles up to nearly the speed of light.

  1. Fermilab | Illinois Accelerator Research Center | Fermilab Core

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

    Capabilities Core Capabilities photo Core capabilities Areas of Expertise Accelerator Science Beam dynamics and theory Design of linear and circular accelerators Simulation and Modeling Phase-space manipulation Energy Deposition Accelerator Operation Operation and commissioning of large, complex accelerator systems Accelerator Technology (design, fabrication, test) Particle sources Superconducting RF cavities and Cryomodules Conventional magnets Pulsed magnets and kickers Superconducting

  2. Fermilab | Illinois Accelerator Research Center | More Information

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

    More Information General Office of Partnerships and Technology Transfer Illinois Department of Commerce and Economic Opportunity Department of Energy Advanced Superconductor Test Accelerator Accelerator Applications 4th Edition, "Accelerators and Beams, Tools of Discovery and Innovation"

  3. Final Environmental Assessment for the construction and operation of an office building at the Stanford Linear Accelerator Center. Part 2

    SciTech Connect (OSTI)

    1995-08-01

    The Department of Energy (DOE) has prepared an Environmental Assessment (EA), DOE/EA-1107, analyzing the environmental effects relating to the construction and operation of an office building at the Stanford Linear Accelerator Center (SLAC). SLAC is a national facility operated by Stanford University, California, under contract with DOE. The center is dedicated to research in elementary particle physics and in those fields that make use of its synchrotron facilities. The objective for the construction and operation of an office building is to provide adequate office space for existing SLAC Waste Management (WM) personnel, so as to centralize WM personnel and to make WM operations more efficient and effective. Based on the analyses in the EA, the DOE has determined that the proposed action does not constitute a major Federal action significantly affecting the quality of the human environment within the meaning of the National Environmental Policy Act of 1969 (NEPA). Therefore, the preparation of an Environmental Impact Statement is not required. This report contains the Environmental Assessment, as well as the Finding of No Significant Impact (FONSI).

  4. Fermilab | Illinois Accelerator Research Center | Accelerators and Society

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

    Accelerators and Society Physicists have been inventing new types of accelerators to propel charged particles to higher and higher energies for more than 80 years. Today, besides their role in scientific discovery, scientists estimate that more than 30,000 accelerators are at work worldwide in areas ranging from diagnosing and treating disease to powering industrial processes. The accelerators of tomorrow promise still greater opportunities. Next-generation particle beams represent cheaper,

  5. NREL, SLAC Scientists Pinpoint Solar Cell Manufacturing Process...

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

    Laboratory (NREL) and SLAC National Accelerator Laboratory have been able to pinpoint for the first time what happens during a key manufacturing process of silicon solar cells. ...

  6. IARC - Illinois Accelerator Research Center | Pilot Program

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

    Fermi National Accelerator Laboratory and Argonne National Laboratory present Accelerator Stewardship Test Facility Pilot Program Use accelerator technology development and testing facilities. Speak with experts in the field. photo collage Accelerator technologies are vital to broad sectors of the U.S. economy, including medicine, industry, defense and security, energy and environment. With this pilot program, the DOE Office of Science National Laboratories are opening their doors to potential

  7. Illinois Accelerator Research Center Business Plan

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

    Plenary session Time Description Speakers 8:30-8:50 AM Current and future accelerator applications Director Nigel Lockyer, Fermilab 8:50-9:15 AM Leveraging lab-university-industry partnerships Assistant Director Andria Winters, Illinois DCEO 9:15-9:35 AM DOE Accelerator Stewardship Pilot program Stewardship Program Director Eric Colby, DOE 9:35-9:55 AM Fermilab accelerator facilities & infrastructure IARC Director Robert Kephart, Fermilab 9:55-10:15 AM Argonne accelerator facilities &

  8. Fermilab | Illinois Accelerator Research Center | Contact IARC

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

    Contact IARC IARC Organizational Chart thumb IARC Director Robert Kephart Kephart@fnal.gov (630) 840-3135 As the Director of IARC my goal is to bridge the gap between breakthroughs in accelerator science and technology and solutions for society. IARC will allow our university and laboratory partners to leverage Fermilab's extensive accelerator infrastructure and expertise, resulting in new accelerator-based products and businesses in the United States. thumb IARC General Manager Charlie Cooper

  9. The Illinois Accelerator Research Center, or IARC,

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

    will work side-by-side with industrial partners to develop breakthroughs in accelerator technology and new applications in energy and environment, medicine, industry, national...

  10. Fermilab | Illinois Accelerator Research Center | What is IARC?

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

    What is IARC? Mission To partner with industry to exploit technology developed in the pursuit of science to create the next generation of industrial accelerators, products, and new applications. Vision To be the preeminent technology source for accelerator based products and services, serving as the seed for US industrial growth. Rendering Conceptual rendering courtesy of Ross Barney Associates and ARUP The Illinois Accelerator Research Center (IARC) is a new accelerator research facility being

  11. SLAC E144 Plots, Simulation Results, and Data

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    The 1997 E144 experiments at the Stanford Linear Accelerator Center (SLAC) utilitized extremely high laser intensities and collided huge groups of photons together so violently that positron-electron pairs were briefly created, actual particles of matter and antimatter. Instead of matter exploding into heat and light, light actually become matter. That accomplishment opened a new path into the exploration of the interactions of electrons and photons or quantum electrodynamics (QED). The E144 information at this website includes Feynmann Diagrams, simulation results, and data files. See also aseries of frames showing the E144 laser colliding with a beam electron and producing an electron-positron pair at http://www.slac.stanford.edu/exp/e144/focpic/focpic.html and lists of collaborators' papers, theses, and a page of press articles.

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

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

    Accelerator Stewardship Test Facility Pilot Program begins at 8:30 on Tuesday April 28th in One West of Wilson Hall. One West is on the west side of the first floor of Wilson hall. ...

  13. RF breakdown experiments at SLAC

    SciTech Connect (OSTI)

    Laurent, L. [University of California Davis, Davis, California 95616 (United States); Vlieks, A.; Pearson, C.; Caryotakis, G.; Luhmann, N.C. [Stanford Linear Accelerator Center, Menlo Park, California 94025 (United States)

    1999-05-01

    RF breakdown is a critical issue in the conditioning of klystrons, accelerator sections, and rf components for the next linear collider (NLC), as well as other high gradient accelerators and high power microwave sources. SLAC is conducting a series of experiments using an X-band traveling wave ring to characterize the processes and trigger mechanisms associated with rf breakdown. The goal of the research is to identify materials, processes, and manufacturing methods that will increase the breakdown threshold and minimize the time required for conditioning. {copyright} {ital 1999 American Institute of Physics.}

  14. Solar Technology Acceleration Center is Powering Up - News Releases | NREL

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

    Solar Technology Acceleration Center is Powering Up October 21, 2009 Members of the Solar Technology Acceleration Center (SolarTAC) and supporters convened in Aurora, Colo., today, to mark a milestone in "Powering Up" one of the world's largest solar test and demonstration facilities. Since announcing the initial launch of SolarTAC one year ago, the site infrastructure development has progressed to the point where members can now break ground for their planned solar technology

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

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

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

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

  16. Results From Plasma Wakefield Acceleration Experiments at FACET...

    Office of Scientific and Technical Information (OSTI)

    International Particle Accelerator Conference (IPAC-2011), San Sebastian, Spain, 4-9 Sep 2011 Research Org: SLAC National Accelerator Laboratory (SLAC) Sponsoring Org: US DOE ...

  17. Secretary Chu to Join Representatives Lofgren and Honda at the SLAC

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

    National Accelerator Laboratory | Department of Energy Representatives Lofgren and Honda at the SLAC National Accelerator Laboratory Secretary Chu to Join Representatives Lofgren and Honda at the SLAC National Accelerator Laboratory August 13, 2010 - 12:00am Addthis Washington, D.C. - On Monday, U.S. Energy Secretary Steven Chu will visit the SLAC National Accelerator Laboratory in Menlo Park, California. Secretary Chu will join Representatives Zoe Lofgren and Mike Honda and Stanford

  18. Z:\Professor Perl\Tau Discovery\Floppy THREE\SLAC-PUB-10150.prn.pdf

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

    SLAC-PUB-10150 October 2003 Submitted to Physics in Perspective *Work supported by Department of Energy contract DE-AC03-76SF00515. Tau Discovery THE DISCOVERY OF THE TAU LEPTON AND THE CHANGES IN ELEMENTARY PARTICLE PHYSICS IN 40 YEARS Martin L. Perl Stanford Linear Accelerator Center and Stanford University, Stanford, CA 94309 Phone: 650-926-4286 Fax: 650-926-4001 Email: martin@slac.stanford.edu Introduction This is a history of my discovery of the tau lepton in the 1970s for which I was

  19. PARTICLE ACCELERATORS; ACCELERATORS; BEAM DUMPS; BENDING; CHANNELING...

    Office of Scientific and Technical Information (OSTI)

    Channeling through Bent Crystals Mack, Stephanie; Ottawa U. SLAC 43 PARTICLE ACCELERATORS; ACCELERATORS; BEAM DUMPS; BENDING; CHANNELING; CRYSTAL LATTICES; DETECTION; FORTRAN;...

  20. NREL, SLAC Scientists Pinpoint Solar Cell Manufacturing Process

    Broader source: Energy.gov [DOE]

    Scientists at the Energy Department's National Renewable Energy Laboratory (NREL) and SLAC National Accelerator Laboratory have been able to pinpoint for the first time what happens during a key manufacturing process of silicon solar cells.

  1. SLAC-PUB-15416 April

    Office of Scientific and Technical Information (OSTI)

    Accelerator Laboratory Stanford University Menlo Park, CA 94025, USA Frank Zimmermann CERN, Geneva, Switzerland Abstract A ring-based Higgs factory with a center-of-mass energy...

  2. Accelerator on a Chip

    ScienceCinema (OSTI)

    England, Joel

    2014-07-16

    SLAC's Joel England explains how the same fabrication techniques used for silicon computer microchips allowed their team to create the new laser-driven particle accelerator chips. (SLAC Multimedia Communications)

  3. Accelerator on a Chip

    SciTech Connect (OSTI)

    England, Joel

    2014-06-30

    SLAC's Joel England explains how the same fabrication techniques used for silicon computer microchips allowed their team to create the new laser-driven particle accelerator chips. (SLAC Multimedia Communications)

  4. SLAC Site Office Homepage | U.S. DOE Office of Science (SC)

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

    SSO Home SLAC Site Office (SSO) SSO Home About Projects Contract Management NEPA Documents Contact Information SLAC Site Office U.S. Department of Energy Bldg 41, M/S 08A 2575 Sand Hill Road Menlo Park, CA 94025 P: (650) 926-2505 SLAC Site Office Pictured Right: Stanford Synchrotron Radiation Lightsource Facility SLAC National Accelerator Laboratory Play/Pause banners Print Text Size: A A A FeedbackShare Page The SLAC Site Office (SSO) is an organization within the U.S. Department of Energy's

  5. fwp100211-slac | netl.doe.gov

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

    Resources Chemical Control of Fluid Flow and Contaminant Release in Shale Microfractures Last Reviewed 6/15/2016 FWP 100211 Goal The project goals are to identify geochemical reactions induced in shales upon injection of hydraulic fracturing fluids and to assess the impact of these reactions on shale porosity and release of contaminants, such as uranium. Performers SLAC National Accelerator Laboratory, Menlo Park, CA Background Current hydraulic fracturing technologies recover less than 30% of

  6. NREL, SLAC Scientists Pinpoint Solar Cell Manufacturing Process - News

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

    Releases | NREL NREL, SLAC Scientists Pinpoint Solar Cell Manufacturing Process April 1, 2016 Scientists at the Energy Department's National Renewable Energy Laboratory (NREL) and SLAC National Accelerator Laboratory have been able to pinpoint for the first time what happens during a key manufacturing process of silicon solar cells. Their paper, "The formation mechanism for printed silver-contacts for silicon solar cells," appears in the journal Nature Communications. The paper was

  7. SLAC-PUB-15224 August

    Office of Scientific and Technical Information (OSTI)

    24 August 25, 2012 Theoretical Summary Lecture for Higgs Hunting 2012 Michael E. Peskin 1 SLAC, Stanford University, Menlo Park, California 94025 USA ABSTRACT In this lecture, I...

  8. SLAC All Access: Laser Labs

    ScienceCinema (OSTI)

    Minitti, Mike; Woods Mike

    2014-06-03

    From supermarket checkouts to video game consoles, lasers are ubiquitous in our lives. Here at SLAC, high-power lasers are critical to the cutting-edge research conducted at the laboratory. But, despite what you might imagine, SLAC's research lasers bear little resemblance to the blasters and phasers of science fiction. In this edition of All Access we put on our safety goggles for a peek at what goes on inside some of SLAC's many laser labs. LCLS staff scientist Mike Minitti and SLAC laser safety officer Mike Woods detail how these lasers are used to study the behavior of subatomic particles, broaden our understanding of cosmic rays and even unlock the mysteries of photosynthesis.

  9. The Illinois Accelerator Research Center, or IARC, will

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

    will work side by side with industrial partners to develop breakthroughs in accelerator technology and new applications in energy and environment, medicine, industry, national...

  10. Photon Science : SLAC National Accelerator Laboratory

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

    Affairs | Org Chart Photon Science Faculty Arthur I. Bienenstock * John Galayda Chi-Chang Kao Srinivas Raghu Gordon E. Brown, Jr. Siegfried Glenzer Young Lee David A. Reis Axel...

  11. SLAC Partners with Palo Alto Firm to Make Klystrons Much More Efficient:

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

    New 'GREEN-RF' technology recycles energy that would otherwise go to waste in accelerating particles for science, medicine, industry | Department of Energy SLAC Partners with Palo Alto Firm to Make Klystrons Much More Efficient: New 'GREEN-RF' technology recycles energy that would otherwise go to waste in accelerating particles for science, medicine, industry SLAC Partners with Palo Alto Firm to Make Klystrons Much More Efficient: New 'GREEN-RF' technology recycles energy that would

  12. Sprints Accelerate Research - Joint Center for Energy Storage Research

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

    October 1, 2015, News Articles Sprints Accelerate Research TimberImage(post.get_field('image')).alt In October 2014, we introduced "Sprints" to accelerate research and meet our goal of developing two battery prototypes, one for transportation and the other for the grid. Each Sprint begins with the identification of a critical scientific question for prototype development that must be answered within a few month timeframe, and the formation of the right team of scientists and engineers

  13. IARC - Illinois Accelerator Research Center | Pilot Program | Who Attends

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

    Who should attend? Are you interested in developing, testing or applying accelerator technologies? Do you want to network and explore opportunities for partnerships? Do you want to benefit from the expertise and world-class equipment available at two famous national research laboratories, Argonne and Fermilab? Do you want to take behind-the-scenes tours of the world-class accelerator technology facilities that have been built at Argonne and Fermilab in recent years to collaborate with industry?

  14. ODU establishes a Center for Accelerator Science | Jefferson...

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

    atom-smashing experiments, as well as for materials processing, medical imaging and radiation therapies against cancer. The center will receive personnel and funding support from...

  15. Wake fields in SLAC Linac Collimators

    SciTech Connect (OSTI)

    Novokhatski, Alexander; Decker, F. -J.; Smith, H.; Sullivan, M.

    2014-12-02

    When a beam travels near collimator jaws, it gets an energy loss and a transverse kick due to the backreaction of the beam field diffracted from the jaws. The effect becomes very important for an intense short bunch when a tight collimation of the background beam halo is required. In the Linac Coherent Light Source at SLAC a collimation system is used to protect the undulators from radiation due to particles in the beam halo. The halo is most likely formed from gun dark current or dark current in some of the accelerating sections. However, collimators are also responsible for the generation of wake fields. The wake field effect from the collimators not only brings an additional energy jitter and change in the trajectory of the beam, but it also rotates the beam on the phase plane, which consequently leads to a degradation of the performance of the Free Electron Laser at the Linac Coherent Light Source. In this paper, we describe a model of the wake field radiation in the SLAC linac collimators. We use the results of a numerical simulation to illustrate the model. Based on the model, we derive simple formulas for the bunch energy loss and the average kick. In addition, we also present results from experimental measurements that confirm our model.

  16. Accelerating Particles with Plasma

    SciTech Connect (OSTI)

    Litos, Michael; Hogan, Mark

    2014-11-05

    Researchers at SLAC explain how they use plasma wakefields to accelerate bunches of electrons to very high energies over only a short distance. Their experiments offer a possible path for the future of particle accelerators.

  17. Resonant Kicker System Development at SLAC

    SciTech Connect (OSTI)

    Beukers, Tony; Krzaszczak, John; Larrus, Marc; Lira, Antonio de; /SLAC

    2009-04-27

    The design and installation of the Linear Coherent Light Source [1] at SLAC National Accelerator Laboratory has included the development of a kicker system for selective beam bunch dumping. The kicker is based on an LC resonant topology formed by the 50 uF energy storage capacitor and the 64 uH air core magnet load which has a sinusoidal pulse period of 400us. The maximum magnet current is 500 A. The circuit is weakly damped, allowing most of the magnet energy to be recovered in the energy storage capacitor. The kicker runs at a repetition rate of 120Hz. A PLC-based control system provides remote control and monitoring of the kicker via EPICS protocol. Fast timing and interlock signals are converted by discrete peak-detect and sample-hold circuits into DC signals that can be processed by the PLC. The design and experimental characterization of the system are presented.

  18. Development of High-Gradient Dielectric Laser-Driven Particle Accelerator Structures

    SciTech Connect (OSTI)

    Byer, Robert L.

    2013-11-07

    The thrust of Stanford's program is to conduct research on high-gradient dielectric accelerator structures driven with high repetition-rate, tabletop infrared lasers. The close collaboration between Stanford and SLAC (Stanford Linear Accelerator Center) is critical to the success of this project, because it provides a unique environment where prototype dielectric accelerator structures can be rapidly fabricated and tested with a relativistic electron beam.

  19. Five Ways SLAC's X-ray Laser Can Change the Way We Live: 'The First Five

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

    Years' Points to a Bright Future of High-impact Discovery at LCLS | Department of Energy Five Ways SLAC's X-ray Laser Can Change the Way We Live: 'The First Five Years' Points to a Bright Future of High-impact Discovery at LCLS Five Ways SLAC's X-ray Laser Can Change the Way We Live: 'The First Five Years' Points to a Bright Future of High-impact Discovery at LCLS March 11, 2016 - 11:29am Addthis News release from SLAC National Accelerator Laboratory, March 9, 2016 If you've ever stood in a

  20. THE LABORATORY Located in Menlo Park, California, SLAC National

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

    THE LABORATORY Located in Menlo Park, California, SLAC National Accelerator Laboratory is home to some of the world's most cutting-edge technologies, used by researchers worldwide to uncover scientifc mysteries on the smallest and the largest scales-from the workings of the atom to the mysteries of the cosmos. The result has been 50 years of discovery and innovation in both basic and applied science, with tangible benefts for our everyday lives. The following examples highlight some of the roles

  1. Review of trigger and on-line processors at SLAC

    SciTech Connect (OSTI)

    Lankford, A.J.

    1984-07-01

    The role of trigger and on-line processors in reducing data rates to manageable proportions in e/sup +/e/sup -/ physics experiments is defined not by high physics or background rates, but by the large event sizes of the general-purpose detectors employed. The rate of e/sup +/e/sup -/ annihilation is low, and backgrounds are not high; yet the number of physics processes which can be studied is vast and varied. This paper begins by briefly describing the role of trigger processors in the e/sup +/e/sup -/ context. The usual flow of the trigger decision process is illustrated with selected examples of SLAC trigger processing. The features are mentioned of triggering at the SLC and the trigger processing plans of the two SLC detectors: The Mark II and the SLD. The most common on-line processors at SLAC, the BADC, the SLAC Scanner Processor, the SLAC FASTBUS Controller, and the VAX CAMAC Channel, are discussed. Uses of the 168/E, 3081/E, and FASTBUS VAX processors are mentioned. The manner in which these processors are interfaced and the function they serve on line is described. Finally, the accelerator control system for the SLC is outlined. This paper is a survey in nature, and hence, relies heavily upon references to previous publications for detailed description of work mentioned here. 27 references, 9 figures, 1 table.

  2. Beam Dynamics Studies for a Laser Acceleration Experiment (Conference...

    Office of Scientific and Technical Information (OSTI)

    Citation Details In-Document Search Title: Beam Dynamics Studies for a Laser Acceleration Experiment The NLC Test Accelerator (NLCTA) at SLAC was built to address various beam ...

  3. SLAC Dosimeter / ID Request Form A

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

    a replacement dosimeter because my dosimeter: Is lost* Was damagedcompromised* Was forgotten Was turned in Expired Other (please explain) * Submit a SLAC LostDamaged Dosimeter...

  4. Recent Upgrade of the Klystron Modulator at SLAC

    SciTech Connect (OSTI)

    Nguyen, M.N.; Burkhart, C.P.; Lam, B.K.; Morris, B.; /SLAC

    2011-11-04

    The SLAC National Accelerator Laboratory employs 244 klystron modulators on its two-mile-long linear accelerator that has been operational since the early days of the SLAC establishment in the sixties. Each of these original modulators was designed to provide 250 kV, 262 A and 3.5 {mu}S at up to 360 pps using an inductance-capacitance resonant charging system, a modified type-E pulse-forming network (PFN), and a pulse transformer. The modulator internal control comprised of large step-start resistor-contactors, vacuum-tube amplifiers, and 120 Vac relays for logical signals. A major, power-component-only upgrade, which began in 1983 to accommodate the required beam energy of the SLAC Linear Collider (SLC) project, raised the modulator peak output capacity to 360 kV, 420 A and 5.0 {mu}S at a reduced pulse repetition rate of 120 pps. In an effort to improve safety, performance, reliability and maintainability of the modulator, this recent upgrade focuses on the remaining three-phase AC power input and modulator controls. The upgrade includes the utilization of primary SCR phase control rectifiers, integrated fault protection and voltage regulation circuitries, and programmable logic controllers (PLC) -- with an emphasis on component physical layouts for safety and maintainability concerns. In this paper, we will describe the design and implementation of each upgraded component in the modulator control system. We will also report the testing and present status of the modified modulators.

  5. An X-Band Gun Test Area at SLAC

    SciTech Connect (OSTI)

    Limborg-Deprey, C.; Adolphsen, C.; Chu, T.S.; Dunning, M.P.; Jobe, R.K.; Jongewaard, E.N.; Hast, C.; Vlieks, A.E.; Wang, F.; Walz, D.R.; Marsh, R.A.; Anderson, S.G.; Hartemann, F.V.; Houck, T.L.; /LLNL, Livermore

    2012-09-07

    The X-Band Test Area (XTA) is being assembled in the NLCTA tunnel at SLAC to serve as a test facility for new RF guns. The first gun to be tested will be an upgraded version of the 5.6 cell, 200 MV/m peak field X-band gun designed at SLAC in 2003 for the Compton Scattering experiment run in ASTA. This new version includes some features implemented in 2006 on the LCLS gun such as racetrack couplers, increased mode separation and elliptical irises. These upgrades were developed in collaboration with LLNL since the same gun will be used in an injector for a LLNL Gamma-ray Source. Our beamline includes an X-band acceleration section which takes the electron beam up to 100 MeV and an electron beam measurement station. Other X-Band guns such as the UCLA Hybrid gun will be characterized at our facility.

  6. SLAC Next-Generation High Availability Power Supply

    SciTech Connect (OSTI)

    Bellomo, P.; MacNair, D.; ,

    2010-06-11

    SLAC recently commissioned forty high availability (HA) magnet power supplies for Japan's ATF2 project. SLAC is now developing a next-generation N+1 modular power supply with even better availability and versatility. The goal is to have unipolar and bipolar output capability. It has novel topology and components to achieve very low output voltage to drive superconducting magnets. A redundant, embedded, digital controller in each module provides increased bandwidth for use in beam-based alignment, and orbit correction systems. The controllers have independent inputs for connection to two external control nodes. Under fault conditions, they sense failures and isolate the modules. Power supply speed mitigates the effects of fault transients and obviates subsequent magnet standardization. Hot swap capability promises higher availability and other exciting benefits for future, more complex, accelerators, and eventually the International Linear Collider project.

  7. Sensitivity Upgrades to the Idaho Accelerator Center Neutron Time of Flight Spectrometer

    SciTech Connect (OSTI)

    Thompson, S. J.; Kinlaw, M. T.; Harmon, J. F.; Wells, D. P.; Hunt, A. W.

    2007-10-26

    Past experiments have shown that discrimination between between fissionable and non-fissionable materials is possible using an interrogation technique that monitors for high energy prompt fission neutrons. Several recent upgrades have been made to the neutron time of flight spectrometer at the Idaho Accelerator Center with the intent of increasing neutron detection sensitivity, allowing for system use in nonproliferation and security applications.

  8. Natural and Accelerated Bioremediation Research (NABIR) Field Research Center (FRC) Management Plan

    SciTech Connect (OSTI)

    Watson, D.B.

    2002-02-28

    The Environmental Sciences Division at Oak Ridge National Laboratory has established a Field Research Center (FRC) to support the Natural and Accelerated Bioremediation Research (NABIR) Program on the U.S. Department of Energy (DOE) Oak Ridge Reservation in Oak Ridge, Tennessee for the DOE Headquarters Office of Biological and Environmental Research within the Office of Science.

  9. Type A Investigation of the Electrical Arc Injury at the Stanford Linear Accelerator Complex on October 11, 2004

    Broader source: Energy.gov [DOE]

    On October 11, 2004, at approximately 11:15 am, a subcontractor electrician working at the Stanford Linear Accelerator Center (SLAC) received serious burn injuries requiring hospitalization due to an electrical arc flash that occurred during the installation of a circuit breaker in an energized 480-Volt (V) electrical panel.

  10. SLAC, Stanford Gadget Grabs More Solar Energy to Disinfect Water...

    Office of Environmental Management (EM)

    SLAC, Stanford Gadget Grabs More Solar Energy to Disinfect Water Faster: Plopped Into water, a tiny device triggers the formation of chemicals that kill microbes in minutes SLAC, ...

  11. RF Gun Photocathode Research at SLAC

    SciTech Connect (OSTI)

    Jongewaard, E.; Akre, R.; Brachmann, A.; Corbett, J.; Gilevich, S.; Grouev, K.; Hering, P.; P.Krejcik,; Lewandowski, J.; Loos, H.; Montagne, T.; Sheppard, J.C.; Stefan, P.; Vlieks, A.; Weathersby, S.; Zhou, F.; /SLAC

    2012-05-16

    LCLS is presently operating with a third copper photocathode in the original rf gun, with a quantum efficiency (QE) of {approx}1 x 10{sup -4} and projected emittance {gamma}{var_epsilon}{sub x,y} = 0.45 {micro}m at 250 pC bunch charge. The spare LCLS gun is installed in the SLAC Accelerator Structure Test Area (ASTA), fully processed to high rf power. As part of a wider photocathode R and D program, a UV laser system and additional gun diagnostics are being installed at ASTA to measure QE, QE lifetime, and electron beam emittance under a variety of operating conditions. The near-term goals are to test and verify the spare photocathode production/installation sequence, including transfer from the final holding chamber to the rf gun. Mid- and longer-term goals include development of a rigorous understanding of plasma and laser-assisted surface conditioning and investigation of new, high-QE photocathode materials. In parallel, an x-ray photoemission spectroscopy station is nearing completion, to analyze Cu photocathode surface chemistry. In this paper we review the status and anticipated operating parameters of ASTA and the spectroscopy test chamber.

  12. Working at SLAC | Linac Coherent Light Source

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

    new Science and User Support Building (SUSB) in 2015. FOOD OPTIONS at SLAC include Starbucks or the EAT Club (pre-order lunch for delivery noon to the Arrillaga Recreation...

  13. X-BAND KLYSTRON DEVELOPMENT AT SLAC

    SciTech Connect (OSTI)

    Vlieks, Arnold E.; /SLAC

    2009-08-03

    The development of X-band klystrons at SLAC originated with the idea of building an X-band Linear Collider in the late 1980's. Since then much effort has been expended in developing a reliable X-band Power source capable of delivering >50 MW RF power in pulse widths >1.5 {micro}s. I will report on some of the technical issues and design strategies which have led to the current SLAC klystron designs.

  14. SLAC X-ray Identifies Mystery Atom Critical to Food Supply

    Office of Energy Efficiency and Renewable Energy (EERE)

    Scientists at the Energy Department’s SLAC National Accelerator Laboratory recently made a huge step in discovering how plants convert nitrogen into a form that living things can use. If we could make plant food from nitrogen the way nature does, we would have a much more efficient method for manufacturing fertilizer -- a $17.8 billion industry in the U.S.

  15. Big Machines and Big Science: 80 Years of Accelerators at Stanford

    SciTech Connect (OSTI)

    Loew, Gregory

    2008-12-16

    Longtime SLAC physicist Greg Loew will present a trip through SLAC's origins, highlighting its scientific achievements, and provide a glimpse of the lab's future in 'Big Machines and Big Science: 80 Years of Accelerators at Stanford.'

  16. ESTB: A New Beam Test Facility at SLAC

    SciTech Connect (OSTI)

    Pivi, M.; Fieguth, T.; Hast, C.; Iverson, R.; Jaros, J.; Jobe, K.; Keller, L.; Walz, D.; Weathersby, S.; Woods, M.; /SLAC

    2011-04-05

    End Station A Test Beam (ESTB) is a beam line at SLAC using a small fraction of the bunches of the 13.6 GeV electron beam from the Linac Coherent Light Source (LCLS), restoring test beam capabilities in the large End Station A (ESA) experimental hall. ESTB will provide one of a kind test beam essential for developing accelerator instrumentation and accelerator R&D, performing particle and particle astrophysics detector research, linear collider machine and detector interface (MDI) R&D studies, development of radiation-hard detectors, and material damage studies with several distinctive features. In the past, 18 institutions participated in the ESA program at SLAC. In stage I, 4 new kicker magnets will be added to divert 5 Hz of the LCLS beam to the A-line. A new beam dump will be installed and a new Personnel Protection System (PPS) is being built in ESA. In stage II, a secondary hadron target will be installed, able to produce pions up to about 12 GeV/c at 1 particle/pulse.

  17. Research and development toward a 4.5-1.5{angstrom} linac coherent light source (LCLS) at SLAC

    SciTech Connect (OSTI)

    Tatchyn, R.; Arthur, J.; Baltay, M.

    1995-12-31

    In recent years significant studies have been initiated on the theoretical and technical feasibility of utilizing a portion of the 3km S-band accelerator at the Stanford Linear Accelerator Center (SLAC) to drive a short wavelength (4.5-1.5 {Angstrom}) Linac Coherent Light Source (LCLS), a Free-Electron Laser (FEL) operating in the Self-Amplified Spontaneous Emission (SASE) regime. Electron beam requirements for single-pass saturation include: (1) a peak current in the 3-7 kA range, (2) a relative energy spread of <0.05%, ad (3) a transverse emittance, {epsilon}{le}{lambda}/4{pi}, where {lambda}[m] is the output wavelength. Requirements on the insertion device include field error levels of 0.1-0.2% for keeping the electron bunch centered on and in phase with the amplified photons, and a focusing beta of 4-8 m for inhibiting the dilution of its transverse density. Although much progress techniques necessary for LCLS operation down to {approximately}20 {angstrom}, a substantial amount of research and development is still required in a number of theoretical and experimental areas leading to the construction and operation of a 4.5-1.5 {angstrom} LCLS. In this paper we report on a research and development program underway and in planning at SLAC for addressing critical questions in these areas. These include the construction and operation of a linac test stand for developing laser-driven photocathode rf guns with normalized emittances approaching 1 mm-mr; development of advanced beam compression, stability, an emittance control techniques at multi-GeV energies; the construction and operation of a FEL Amplifier Test Experiment (FATE) for theoretical and experimental studies of SASE at IR wavelengths; an undulator development program to investigate superconducting, hybrid/permanent magnet (hybrid/PM), and pulsed-Cu technologies; theoretical and computational studies of high-gain FEL physics and LCLS component designs.

  18. Latest Plasma Wakefield Acceleration Results from the FACET Project...

    Office of Scientific and Technical Information (OSTI)

    Resource Relation: Conference: Invited paper at the North American Particle Accelerator Conference (PAC 2013), 29 Sep - 4 Oct 2013, Pasadena, CA, USA Research Org: SLAC National ...

  19. S-Band Loads for SLAC Linac

    SciTech Connect (OSTI)

    Krasnykh, A.; Decker, F.-J.; LeClair, R.; /INTA Technologies, Santa Clara

    2012-08-28

    The S-Band loads on the current SLAC linac RF system were designed, in some cases, 40+ years ago to terminate 2-3 MW peak power into a thin layer of coated Kanthal material as the high power absorber [1]. The technology of the load design was based on a flame-sprayed Kanthal wire method onto a base material. During SLAC linac upgrades, the 24 MW peak klystrons were replaced by 5045 klystrons with 65+ MW peak output power. Additionally, SLED cavities were introduced and as a result, the peak power in the current RF setup has increased up to 240 MW peak. The problem of reliable RF peak power termination and RF load lifetime required a careful study and adequate solution. Results of our studies and three designs of S-Band RF load for the present SLAC RF linac system is discussed. These designs are based on the use of low conductivity materials.

  20. Joint Center for Artificial Photosynthesis

    ScienceCinema (OSTI)

    Koval, Carl; Lee, Kenny; Houle, Frances; Lewis, Nate

    2013-12-19

    The Joint Center for Artificial Photosynthesis (JCAP) is the nation's largest research program dedicated to the development of an artificial solar-fuel generation technology. Established in 2010 as a U.S. Department of Energy (DOE) Energy Innovation Hub, JCAP aims to find a cost-effective method to produce fuels using only sunlight, water, and carbon dioxide as inputs. JCAP brings together more than 140 top scientists and researchers from the California Institute of Technology and its lead partner, Berkeley Lab, along with collaborators from the SLAC National Accelerator Laboratory, and the University of California campuses at Irvine and San Diego.

  1. SLAC All Access: X-ray Microscope

    ScienceCinema (OSTI)

    Nelson, Johanna; Liu, Yijin

    2014-06-13

    SLAC physicists Johanna Nelson and Yijin Liu give a brief overview of the X-ray microscope at the Stanford Synchrotron Radiation Lightsource (SSRL) that is helping improve rechargeable-battery technology by letting researchers peek into the inner workings of batteries as they operate.

  2. Accelerating Energy Efficiency in Indian Data Centers. Final Report for Phase I Activities

    SciTech Connect (OSTI)

    Ganguly, Suprotim; Raje, Sanyukta; Kumar, Satish; Sartor, Dale; Greenberg, Steve

    2016-01-01

    This report documents Phase 1 of the “Accelerating Energy Efficiency in Indian Data Centers” initiative to support the development of an energy efficiency policy framework for Indian data centers. The initiative is being led by the Confederation of Indian Industry (CII), in collaboration with Lawrence Berkeley National Laboratory (LBNL)-U.S. Department of Energy’s Office of Energy Efficiency and Renewable Energy, and under the guidance of Bureau of Energy Efficiency (BEE). It is also part of the larger Power and Energy Efficiency Working Group of the US-India Bilateral Energy Dialogue. The initiative consists of two phases: Phase 1 (November 2014 – September 2015) and Phase 2 (October 2015 – September 2016).

  3. Transverse Beam Emittance Measurements of a 16 MeV Linac at the Idaho Accelerator Center

    SciTech Connect (OSTI)

    S. Setiniyaz, T.A. Forest, K. Chouffani, Y. Kim, A. Freyberger

    2012-07-01

    A beam emittance measurement of the 16 MeV S-band High Repetition Rate Linac (HRRL) was performed at Idaho State University's Idaho Accelerator Center (IAC). The HRRL linac structure was upgraded beyond the capabilities of a typical medical linac so it can achieve a repetition rate of 1 kHz. Measurements of the HRRL transverse beam emittance are underway that will be used to optimize the production of positrons using HRRL's intense electron beam on a tungsten converter. In this paper, we describe a beam imaging system using on an OTR screen and a digital CCD camera, a MATLAB tool to extract beamsize and emittance, detailed measurement procedures, and the measured transverse emittances for an arbitrary beam energy of 15 MeV.

  4. Researchers Create Transparent Lithium-Ion Battery - Joint Center...

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

    Stanford and SLAC National Accelerator Laboratory researchers have invented a transparent lithium-ion battery that is also highly flexible. It is comparable in cost to regular ...

  5. PEP-II Large Power Supplies Rebuild Program at SLAC

    SciTech Connect (OSTI)

    Bellomo, P.; Lipari, J.J.; de Lira, A.C.; Rafael, F.S.; /SLAC

    2005-05-17

    Seven large power supplies (LGPS) with output ratings from 72kW to 270kW power PEP-II quad magnets in the electron-positron collider region. These supplies have posed serious maintenance and reliability problems since they were installed in 1997, resulting in loss of accelerator availability. A redesign/rebuild program was undertaken by the SLAC Power Conversion Department. During the 2004 summer shutdown all the control circuits in these supplies were redesigned and replaced. A new PWM control board, programmable logic controller, and touch panel have been installed to improve LGPS reliability, and to make troubleshooting easier. In this paper we present the details of this rebuilding program and results.

  6. Andrew Hutton Named Head of Jefferson Lab's Accelerator Division |

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

    Andrew Gordon About Us Andrew Gordon - SLAC National Accelerator Laboratory Andrew Gordon is the External Communications Manager at SLAC National Accelerator Laboratory, one of the Department of Energy's 17 National Laboratories. Most Recent The World's Most Powerful X-ray Laser is Getting an Upgrade June 21 Accelerator on a Chip February Jefferson Lab

    Andrew Hutton Named Head of Jefferson Lab's Accelerator Division Andrew Hutton Named Head of Jefferson Lab's Accelerator Division March

  7. A Look Inside SLAC's Battery Lab

    SciTech Connect (OSTI)

    Wei Seh, Zhi

    2014-07-17

    In this video, Stanford materials science and engineering graduate student Zhi Wei Seh shows how he prepares battery materials in SLAC's energy storage laboratory, assembles dime-sized prototype "coin cells" and then tests them to see how many charge-discharge cycles they can endure without losing their ability to hold a charge. Results to date have already set records: After 1,000 cycles, they retain 70 percent of their original charge.

  8. A Look Inside SLAC's Battery Lab

    ScienceCinema (OSTI)

    Wei Seh, Zhi

    2014-07-21

    In this video, Stanford materials science and engineering graduate student Zhi Wei Seh shows how he prepares battery materials in SLAC's energy storage laboratory, assembles dime-sized prototype "coin cells" and then tests them to see how many charge-discharge cycles they can endure without losing their ability to hold a charge. Results to date have already set records: After 1,000 cycles, they retain 70 percent of their original charge.

  9. Klystron Modulator Design for the Los Alamos Neutron Science Center Accelerator

    SciTech Connect (OSTI)

    Reass, William A.; Baca, David M.; Partridge, Edward R.; Rees, Daniel E.

    2012-06-22

    This paper will describe the design of the 44 modulator systems that will be installed to upgrade the Los Alamos Neutron Science Center (LANSCE) accelerator RF system. The klystrons can operate up to 86 kV with a nominal 32 Amp beam current with a 120 Hz repetition rate and 15% duty cycle. The klystrons are a mod-anode design. The modulator is designed with analog feedback control to ensure the klystron beam current is flat-top regulated. To achieve fast switching while maintaining linear feedback control, a grid-clamp, totem-pole modulator configuration is used with an 'on' deck and an 'off' deck. The on and off deck modulators are of identical design and utilize a cascode connected planar triode, cathode driven with a high speed MOSFET. The derived feedback is connected to the planar triode grid to enable the flat-top control. Although modern design approaches suggest solid state designs may be considered, the planar triode (Eimac Y-847B) is very cost effective, is easy to integrate with the existing hardware, and provides a simplified linear feedback control mechanism. The design is very compact and fault tolerant. This paper will review the complete electrical design, operational performance, and system characterization as applied to the LANSCE installation.

  10. Preliminary Notice of Violation, SLAC National Accelerator Laboratory...

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

    Office of Enforcement issued a Preliminary Notice of Violation (WEA-2009-01) to Stanford University for violations of 10 C.F.R. 851 associated with a polyvinyl chloride pipe ...

  11. Photo of the Week: What Does a Particle Accelerator Have in Common...

    Energy Savers [EERE]

    Learn more about how FACET works. | Photo courtesy of SLAC National Accelerator Laboratory. Sarah Gerrity Sarah Gerrity Former Multimedia Editor, Office of Public Affairs Every ...

  12. SSRL Science in SLAC Today | Stanford Synchrotron Radiation Lightsource

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

    Science in SLAC Today Subscribe to SSRL Science in SLAC Today feed URL: https://www6.slac.stanford.edu/blog-tags/stanford-synchrotron-radiation-lightsource-ssrl Updated: 13 hours 31 min ago SLAC, Stanford Team Finds a Tough New Catalyst for Use in Renewable Fuels Production Thu, 2016/09/01 - 8:23am The discovery could make water splitting, a key step in a number of clean energy technologies, cheaper and more efficient. Yijin Liu Receives 2016 Spicer Award For Substantial Research Contributions

  13. Before Arriving at SLAC | Linac Coherent Light Source

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

    ... LCLS users must complete several safety training courses online BEFORE traveling to SLAC. Complete User Agreements Before user experiments begin, a User Agreement must be ...

  14. 2013 Annual Planning Summary for the SLAC Site Office

    Broader source: Energy.gov [DOE]

    ​The ongoing and projected Environmental Assessments and Environmental Impact Statements for 2013 and 2014 within the SLAC Site Office.

  15. 2012 Annual Planning Summary for SLAC Site Office | Department...

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

    The ongoing and projected Environmental Assessments and Environmental Impact Statements for ... (SLAC) EA-1904: Draft Environmental Assessment EA-1904: Final Environmental ...

  16. Radiation Dose Measurement for High-Intensity Laser Interactions with Solid Targets at SLAC

    SciTech Connect (OSTI)

    Liang, Taiee

    2015-09-25

    A systematic study of photon and neutron radiation doses generated in high-intensity laser-solid interactions is underway at SLAC National Accelerator Laboratory. We found that these laser-solid experiments are being performed using a 25 TW (up to 1 J in 40 fs) femtosecond pulsed Ti:sapphire laser at the Linac Coherent Light Source’s (LCLS) Matter in Extreme Conditions (MEC) facility. Additionally, radiation measurements were performed with passive and active detectors deployed at various locations inside and outside the target chamber. Results from radiation dose measurements for laser-solid experiments at SLAC MEC in 2014 with peak intensity between 1018 to 7.1x1019 W/cm2 are presented.

  17. The Role of Research Universities in Helping Solve our Energy Challenges: A Case Study at Stanford and SLAC (2011 EFRC Summit)

    ScienceCinema (OSTI)

    Hennessey, John (President, Stanford University)

    2012-03-14

    The first speaker in the 2011 EFRC Summit session titled "Leading Perspectives in Energy Research" was John Hennessey, President of Stanford University. He discussed the important role that the academic world plays as a partner in innovative energy research by presenting a case study involving Stanford and SLAC. The 2011 EFRC Summit and Forum brought together the EFRC community and science and policy leaders from universities, national laboratories, industry and government to discuss "Science for our Nation's Energy Future." In August 2009, the Office of Science established 46 Energy Frontier Research Centers. The EFRCs are collaborative research efforts intended to accelerate high-risk, high-reward fundamental research, the scientific basis for transformative energy technologies of the future. These Centers involve universities, national laboratories, nonprofit organizations, and for-profit firms, singly or in partnerships, selected by scientific peer review. They are funded at $2 to $5 million per year for a total planned DOE commitment of $777 million over the initial five-year award period, pending Congressional appropriations. These integrated, multi-investigator Centers are conducting fundamental research focusing on one or more of several ?grand challenges? and use-inspired ?basic research needs? recently identified in major strategic planning efforts by the scientific community. The purpose of the EFRCs is to integrate the talents and expertise of leading scientists in a setting designed to accelerate research that transforms the future of energy and the environment.

  18. Lattice Design for ERL Options at SLAC

    SciTech Connect (OSTI)

    Nosochkov, Yuri; Cai, Yunhai; Huang, Xiaobiao; Wang, Min-Huey; /SLAC

    2011-06-02

    SLAC is investigating long-range options for building a high performance light source machine while reusing the existing linac and PEP-II tunnels. One previously studied option is the PEP-X low emittance storage ring. The alternative option is based on a superconducting Energy Recovery Linac (ERL) and the PEP-X design. The ERL advantages are the low beam emittance, short bunch length and small energy spread leading to better qualities of the X-ray beams. Two ERL configurations differed by the location of the linac have been studied. Details of the lattice design and the results of beam transport simulations with the coherent synchrotron radiation effects are presented.

  19. OSTIblog Articles in the slac Topic | OSTI, US Dept of Energy...

    Office of Scientific and Technical Information (OSTI)

    Related Topics: archimedes, multimedia, new media, slac Read more... Recording Science: ... he probably could have if given... Related Topics: archimedes, multimedia, new media, slac

  20. Brookhaven Lab Named an NVIDIA GPU Research Center: Designation recognizes research utilizing GPU-accelerated computing

    Broader source: Energy.gov [DOE]

    The U.S. Department of Energy's (DOE) Brookhaven National Laboratory has been named a 2016 GPU Research Center by NVIDIA, the world leader in visual computing.

  1. Connecting Accelerator RD to User Needs | U.S. DOE Office of...

    Office of Science (SC) Website

    areas (center) supported by the Office of Science (adapted from SLAC Task Force report). ... as motivated by a few main technical goals: improved particle beam quality ...

  2. Relativistic klystron research at SLAC and LLNL

    SciTech Connect (OSTI)

    Allen, M.A.; Callin, R.S.; Deruyter, H.; Eppley, K.R.; Fowkes, W.R.; Herrmannsfeldt, W.B.; Higo, T.; Hoag, H.A.; Lavine, T.L.; Lee, T.G.; Loew, G.A.; Miller, R.H.; Morton, P.L.; Palmer, R.B.; Paterson, J.M.; Ruth, R.D.; Schwarz, H.D.; Takeuchi, Y.; Vlieks, A.E.; Wang, J.W.; Wilson, P.B.; Hopkins, D.B.; Sessler, A.M.; Barletta, W.A.; Birx, D.L.; Boyd, J.K.; Houck, T.; Westenskow, G.A.; Yu, S.S.

    1988-06-01

    We are developing relativistic klystrons as a power source for high gradient accelerator applications such as large linear electron-positron colliders and compact accelerators. We have attained 200 MW peak power at 11.4 GHz from a relativistic klystron, and 140 MV/m longitudinal gradient in a short 11.4 GHz accelerator section. We report here briefly on our experiments so far. 5 refs., 1 fig., 1 tab.

  3. Emittance Studies of the BNL/SLAC/UCLA 1.6 Cell Photocathode RF Gun

    SciTech Connect (OSTI)

    Palmer, D.T.; Wang, X.J.; Miller, R.H.; Babzien, M.; Ben-Zvi, I.; Pellegrini, C.; Sheehan, J.; Skaritka, J.; Winick, H.; Woodle, M.; Yakimenko, V.; /Brookhaven

    2011-09-09

    The symmetrized 1.6 cell S-band photocathode gun developed by the BNL/SLAC/UCLA collaboration is in operation at the Brookhaven Accelerator Test Facility (ATF). A novel emittance compensation solenoid magnet has also been designed, built and is in operation at the ATF. These two subsystems form an emittance compensated photoinjector used for beam dynamics, advanced acceleration and free electron laser experiments at the ATF. The highest acceleration field achieved on the copper cathode is 150 MV/m, and the guns normal operating field is 130 MV/m. The maximum rf pulse length is 3 {mu}s. The transverse emittance of the photoelectron beam were measured for various injection parameters. The 1 nC emittance results are presented along with electron bunch length measurements that indicated that at above the 400 pC, space charge bunch lengthening is occurring. The thermal emittance, {epsilon}{sub o}, of the copper cathode has been measured.

  4. Brodsky, S.J.; /SLAC; Fleuret, F.; /Ecole Polytechnique; Hadjidakis...

    Office of Scientific and Technical Information (OSTI)

    Physics Opportunities of a Fixed-Target Experiment using the LHC Beams Brodsky, S.J.; SLAC; Fleuret, F.; Ecole Polytechnique; Hadjidakis, C.; Lansberg, J.P.; Orsay, IPN 08...

  5. Final Design of the SLAC P2 Marx Klystron Modulator

    SciTech Connect (OSTI)

    Kemp, M.A.; Benwell, A.; Burkhart, C.; Larsen, R.; MacNair, D.; Nguyen, M.; Olsen, J.; /SLAC

    2011-11-08

    The SLAC P2 Marx has been under development for two years, and follows on the P1 Marx as an alternative to the baseline klystron modulator for the International Linear Collider. The P2 Marx utilizes a redundant architecture, air-insulation, a control system with abundant diagnostic access, and a novel nested droop correction scheme. This paper is an overview of the design of this modulator. There are several points of emphasis for the P2 Marx design. First, the modulator must be compatible with the ILC two-tunnel design. In this scheme, the modulator and klystron are located within a service tunnel with limited access and available footprint for a modulator. Access to the modulator is only practical from one side. Second, the modulator must have high availability. Robust components are not sufficient alone to achieve availability much higher than 99%. Therefore, redundant architectures are necessary. Third, the modulator must be relatively low cost. Because of the large number of stations in the ILC, the investment needed for the modulator components is significant. High-volume construction techniques which take advantage of an economy of scale must be utilized. Fourth, the modulator must be simple and efficient to maintain. If a modulator does become inoperable, the MTTR must be small. Fifth, even though the present application for the modulator is for the ILC, future accelerators can also take advantage of this development effort. The hardware, software, and concepts developed in this project should be designed such that further development time necessary for other applications is minimal.

  6. Natural and Accelerated Bioremediation Research (NABIR) Field Research Center (FRC), Oak Ridge Tennessee

    SciTech Connect (OSTI)

    Watson, David; Jardine, Philip; Gu, Baohua; Parker, Jack; Brandt, Craig; Holladay, Susan; Wolfe, Amy; Bogle, Mary Anna; Lowe, Kenneth; Hyder, Kirk

    2006-06-01

    The Field Research Center (FRC) in Oak Ridge (Fig. 1), Tennessee supports the U.S. Department of Energy's (DOE's) Environmental Remediation Sciences Program (ERSP) goal of understanding the complex physical, chemical, and biological properties of contaminated sites for new solutions to environmental remediation and long-term stewardship. In particular, the FRC provides the opportunity for researchers to conduct studies that promote the understanding of the processes that influence the transport and fate of subsurface contaminants, the effectiveness and long-term consequences of existing remediation options, and the development of improved remediation strategies. It offers a series of contaminated sites around the former S-3 Waste Disposal Ponds and uncontaminated sites in which investigators and students conduct field research or collect samples for laboratory analysis. FRC research also spurs the development of new and improved characterization and monitoring tools. Site specific knowledge gained from research conducted at the FRC also provides the DOE-Oak Ridge Office of Environmental Management (EM) the critical scientific knowledge needed to make cleanup decisions for the S-3 Ponds and other sites on the Oak Ridge Reservation (ORR).

  7. Spin structure functions of the neutron g{sub 1}{sup n}: SLAC...

    Office of Scientific and Technical Information (OSTI)

    We find relatively large negative values for gsub 1sup n at low x. The results call ... QUARKS; SPIN; STANFORD LINEAR ACCELERATOR CENTER; STRUCTURE FUNCTIONS; SUM RULES Word ...

  8. EA-1904: Linac Coherent Light Source II at Stanford Linear Accelerator Laboratory, San Mateo, California

    Broader source: Energy.gov [DOE]

    This EA evaluates the environmental impacts of the proposed construction of the Linac Coherent Light Source at SLAC National Accelerator Laboratory, Menlo Park, California. None available at this time. For more information, contact: Mr. Dave Osugi DOE SLAC Site Office 2575 Sand Hill Road, MS8A Menlo Park, CA 94025 E-mail: dave.osugi@sso.science.doe.gov

  9. Experimental Tests of the GDH and Other Sum Rules at SLAC (Conference...

    Office of Scientific and Technical Information (OSTI)

    Conference: Experimental Tests of the GDH and Other Sum Rules at SLAC Citation Details In-Document Search Title: Experimental Tests of the GDH and Other Sum Rules at SLAC You...

  10. Do you have the correct Visa stamp for getting a SLAC badge?...

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

    from foreign countries should follow this advice to obtain the correct stamp on their passport in order to obtain a SLAC badge. For more detailed information on SLAC access and...

  11. Videos - Joint Center for Energy Storage Research

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

    July 17, 2012, Videos Scientists Probe Lithium-Sulfur Batteries in Real Time Lithium-sulfur batteries are a promising technology that could some day power electric vehicles. Scientists at SLAC and Stanford University took microscope snapshots of individual sulfur particles - the first real-time imaging of a lithium-sulfur battery in operation. Read More July 18, 2011, Videos Researchers Create Transparent Lithium-Ion Battery Stanford and SLAC National Accelerator Laboratory researchers have

  12. Los Alamos National Laboratory * Est. 1943 The Pulse-Newsletter of the Los Alamos Neutron Science Center and Accelerator Operations and Technology Division

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

    1 Los Alamos National Laboratory * Est. 1943 The Pulse-Newsletter of the Los Alamos Neutron Science Center and Accelerator Operations and Technology Division I N S I D E 2 From Alex's Desk 3 lujAn Center reseArCh FeAtureD on Cover oF Langmuir 4 FunCtionAl oxiDes unDer extreme ConDi- tions-quest For new mAteriAls 6 heADs uP! By Diana Del Mauro ADEPS Communications Inside the Lujan Neutron Scattering Center, Victor Fanelli is busy preparing a superconducting magnet. In a series of delicate steps,

  13. SLAC Users Bulletin No. 102, November 1985-April 1986

    SciTech Connect (OSTI)

    Keller, L. P.; Edminster, D. [eds.] [eds.

    1986-01-01

    The status experimental activities at SLAC is reported, including the long-range schedule and a list of approved high-energy experiments. Work on PEP, SPEAR, and the SLC is included, as well as computing. Such operational data as operating hours and experimental hours are given. (LEW)

  14. Illinois Accelerator Research Center

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

    VEHICLE TECHNOLOGIES OFFICE Idling Reduction for Emergency and Other Service Vehicles Emergency vehicles, such as police cars, ambulances, and fire trucks, along with other service vehicles such as armored cars, are often exempt from laws that limit engine idling. However, these vehicles can save fuel and reduce emissions with technologies that allow them to perform vital services without idling. Police Vehicles Police cruisers spend much of their time parked and running while offcers monitor

  15. SU-E-J-137: Image Registration Tool for Patient Setup in Korea Heavy Ion Medical Accelerator Center

    SciTech Connect (OSTI)

    Kim, M; Suh, T; Cho, W; Jung, W

    2015-06-15

    Purpose: A potential validation tool for compensating patient positioning error was developed using 2D/3D and 3D/3D image registration. Methods: For 2D/3D registration, digitally reconstructed radiography (DRR) and three-dimensional computed tomography (3D-CT) images were applied. The ray-casting algorithm is the most straightforward method for generating DRR. We adopted the traditional ray-casting method, which finds the intersections of a ray with all objects, voxels of the 3D-CT volume in the scene. The similarity between the extracted DRR and orthogonal image was measured by using a normalized mutual information method. Two orthogonal images were acquired from a Cyber-Knife system from the anterior-posterior (AP) and right lateral (RL) views. The 3D-CT and two orthogonal images of an anthropomorphic phantom and head and neck cancer patient were used in this study. For 3D/3D registration, planning CT and in-room CT image were applied. After registration, the translation and rotation factors were calculated to position a couch to be movable in six dimensions. Results: Registration accuracies and average errors of 2.12 mm ± 0.50 mm for transformations and 1.23° ± 0.40° for rotations were acquired by 2D/3D registration using an anthropomorphic Alderson-Rando phantom. In addition, registration accuracies and average errors of 0.90 mm ± 0.30 mm for transformations and 1.00° ± 0.2° for rotations were acquired using CT image sets. Conclusion: We demonstrated that this validation tool could compensate for patient positioning error. In addition, this research could be the fundamental step for compensating patient positioning error at the first Korea heavy-ion medical accelerator treatment center.

  16. Labs at-a-Glance: Fermi National Accelerator Laboratory | U.S. DOE Office

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

    of Science (SC) Fermi National Accelerator Laboratory Laboratories Laboratories Home Ames Laboratory Argonne National Laboratory Brookhaven National Laboratory Fermi National Accelerator Laboratory Lawrence Berkeley National Laboratory Oak Ridge National Laboratory Pacific Northwest National Laboratory Princeton Plasma Physics Laboratory SLAC National Accelerator Laboratory Thomas Jefferson National Accelerator Facility Laboratory Science Highlights Laboratory News Contact Information Office

  17. Labs at-a-Glance: Thomas Jefferson National Accelerator Facility | U.S. DOE

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

    Office of Science (SC) Thomas Jefferson National Accelerator Facility Laboratories Laboratories Home Ames Laboratory Argonne National Laboratory Brookhaven National Laboratory Fermi National Accelerator Laboratory Lawrence Berkeley National Laboratory Oak Ridge National Laboratory Pacific Northwest National Laboratory Princeton Plasma Physics Laboratory SLAC National Accelerator Laboratory Thomas Jefferson National Accelerator Facility Laboratory Science Highlights Laboratory News Contact

  18. SLAC Site Office EA / EIS | U.S. DOE Office of Science (SC)

    Office of Science (SC) Website

    SLAC Site Office EA EIS Safety and Security Policy (SSP) SSP Home About Frequently Used Resources NEPA Documents Categorical Exclusion Determinations Environmental Assessments...

  19. Data Needs for LCLS-II Amedeo Perazzo SLAC Joint Facilities User...

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

    Amedeo Perazzo SLAC Joint Facilities User Forum on Data Intensive Computing, June 16 th 2014 Joint Facilities User Forum on Data Intensive Computing - LCLS-II Data Needs ...

  20. Production and isolation of homologs of flerovium and element 115 at the Lawrence Livermore National Laboratory Center for Accelerator Mass Spectrometry

    SciTech Connect (OSTI)

    Despotopulos, John D.; Kmak, Kelly N.; Gharibyan, Narek; Brown, Thomas A.; Grant, Patrick M.; Henderson, Roger A.; Moody, Kent J.; Tumey, Scott J.; Shaughnessy, Dawn A.; Sudowe, Ralf

    2015-10-01

    Here, new procedures have been developed to isolate no-carrier-added (NCA) radionuclides of the homologs and pseudo-homologs of flerovium (Hg, Sn) and element 115 (Sb), produced by 12–15 MeV proton irradiation of foil stacks with the tandem Van-de-Graaff accelerator at the Lawrence Livermore National Laboratory Center for Accelerator Mass Spectrometry (CAMS) facility. The separation of 113Sn from natIn foil was performed with anion-exchange chromatography from hydrochloric and nitric acid matrices. A cation-exchange chromatography method based on hydrochloric and mixed hydrochloric/hydroiodic acids was used to separate 124Sb from natSn foil. A procedure using Eichrom TEVA resin was developed to separate 197Hg from Au foil. These results demonstrate the suitability of using the CAMS facility to produce NCA radioisotopes for studies of transactinide homologs.

  1. Production and isolation of homologs of flerovium and element 115 at the Lawrence Livermore National Laboratory Center for Accelerator Mass Spectrometry

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

    Despotopulos, John D.; Kmak, Kelly N.; Gharibyan, Narek; Brown, Thomas A.; Grant, Patrick M.; Henderson, Roger A.; Moody, Kent J.; Tumey, Scott J.; Shaughnessy, Dawn A.; Sudowe, Ralf

    2015-10-01

    Here, new procedures have been developed to isolate no-carrier-added (NCA) radionuclides of the homologs and pseudo-homologs of flerovium (Hg, Sn) and element 115 (Sb), produced by 12–15 MeV proton irradiation of foil stacks with the tandem Van-de-Graaff accelerator at the Lawrence Livermore National Laboratory Center for Accelerator Mass Spectrometry (CAMS) facility. The separation of 113Sn from natIn foil was performed with anion-exchange chromatography from hydrochloric and nitric acid matrices. A cation-exchange chromatography method based on hydrochloric and mixed hydrochloric/hydroiodic acids was used to separate 124Sb from natSn foil. A procedure using Eichrom TEVA resin was developed to separate 197Hg frommore » Au foil. These results demonstrate the suitability of using the CAMS facility to produce NCA radioisotopes for studies of transactinide homologs.« less

  2. SuperB Progress Report for Accelerator

    SciTech Connect (OSTI)

    Biagini, M.E.; Boni, R.; Boscolo, M.; Buonomo, B.; Demma, T.; Drago, A.; Esposito, M.; Guiducci, S.; Mazzitelli, G.; Pellegrino, L.; Preger, M.A.; Raimondi, P.; Ricci, R.; Rotundo, U.; Sanelli, C.; Serio, M.; Stella, A.; Tomassini, S.; Zobov, M.; Bertsche, K.; Brachman, A.; /SLAC /Novosibirsk, IYF /INFN, Pisa /Pisa U. /Orsay, LAL /Annecy, LAPP /LPSC, Grenoble /IRFU, SPP, Saclay /DESY /Cockroft Inst. Accel. Sci. Tech. /U. Liverpool /CERN

    2012-02-14

    This report details the progress made in by the SuperB Project in the area of the Collider since the publication of the SuperB Conceptual Design Report in 2007 and the Proceedings of SuperB Workshop VI in Valencia in 2008. With this document we propose a new electron positron colliding beam accelerator to be built in Italy to study flavor physics in the B-meson system at an energy of 10 GeV in the center-of-mass. This facility is called a high luminosity B-factory with a project name 'SuperB'. This project builds on a long history of successful e+e- colliders built around the world, as illustrated in Figure 1.1. The key advances in the design of this accelerator come from recent successes at the DAFNE collider at INFN in Frascati, Italy, at PEP-II at SLAC in California, USA, and at KEKB at KEK in Tsukuba Japan, and from new concepts in beam manipulation at the interaction region (IP) called 'crab waist'. This new collider comprises of two colliding beam rings, one at 4.2 GeV and one at 6.7 GeV, a common interaction region, a new injection system at full beam energies, and one of the two beams longitudinally polarized at the IP. Most of the new accelerator techniques needed for this collider have been achieved at other recently completed accelerators including the new PETRA-3 light source at DESY in Hamburg (Germany) and the upgraded DAFNE collider at the INFN laboratory at Frascati (Italy), or during design studies of CLIC or the International Linear Collider (ILC). The project is to be designed and constructed by a worldwide collaboration of accelerator and engineering staff along with ties to industry. To save significant construction costs, many components from the PEP-II collider at SLAC will be recycled and used in this new accelerator. The interaction region will be designed in collaboration with the particle physics detector to guarantee successful mutual use. The accelerator collaboration will consist of several groups at present universities and national

  3. LINEAR ACCELERATOR

    DOE Patents [OSTI]

    Christofilos, N.C.; Polk, I.J.

    1959-02-17

    Improvements in linear particle accelerators are described. A drift tube system for a linear ion accelerator reduces gap capacity between adjacent drift tube ends. This is accomplished by reducing the ratio of the diameter of the drift tube to the diameter of the resonant cavity. Concentration of magnetic field intensity at the longitudinal midpoint of the external sunface of each drift tube is reduced by increasing the external drift tube diameter at the longitudinal center region.

  4. 17 GHz High Gradient Accelerator Research

    SciTech Connect (OSTI)

    Temkin, Richard J.; Shapiro, Michael A.

    2013-07-10

    This is a report on the MIT High Gradient Accelerator Research program which has included: Operation of the 17 GHz, 25 MeV MIT/Haimson Research Corp. electron accelerator at MIT, the highest frequency, stand-alone accelerator in the world; collaboration with members of the US High Gradient Collaboration, including the design and test of novel structures at SLAC at 11.4 GHz; the design, construction and testing of photonic bandgap structures, including metallic and dielectric structures; the investigation of the wakefields in novel structures; and the training of the next generation of graduate students and postdoctoral associates in accelerator physics.

  5. SLAC All Access: Atomic, Molecular and Optical Science Instrument

    ScienceCinema (OSTI)

    Bozek, John

    2014-06-03

    John Bozek, a staff scientist at SLAC's Linac Coherent Light Source (LCLS) X-ray laser who manages the LCLS Soft X-ray Department, takes us behind the scenes at the Atomic, Molecular and Optical Science (AMO) instrument, the first of six experimental stations now operating at LCLS. Samples used in AMO experiments include atoms, molecules, clusters, and nanoscale objects such as protein crystals or viruses. Science performed at AMO includes fundamental studies of light-matter interactions in the extreme X-ray intensity of the LCLS pules, time-resolved studies of increasingly charged states of atoms and molecules, X-ray diffraction imaging of nanocrystals, and single-shot imaging of a variety of objects.

  6. Two-klystron Binary Pulse Compression at SLAC

    SciTech Connect (OSTI)

    Farkas, Z.D.; Lavine, T.L.; Menegat, A.; Vlieks, A.E.; Wang, J.W.; Wilson, P.B.

    1993-04-01

    The Binary Pulse Compression system installed at SLAC was tested using two klystrons, one with 10 MW and the other with 34 MW output. By compressing 560 ns klystron pulses into 70 ns, the measured BPC output was 175 MW, limited by the available power from the two klystrons. This output was used to provide 100-MW input to a 30-cell X-band structure in which a 100-MV/m gradient was obtained. This system, using the higher klystron outputs expected in the future has the potential to deliver the 350 MW needed to obtain 100 MV/m gradients in the 1.8-m NLC prototype structure. This note describes the timing, triggering, and phase coding used in the two-klystron experiment, and the expected and measured net-work response to three- or two-stage modulation.

  7. Collaborative Visualization for Large-Scale Accelerator Electromagnetic Modeling (Final Report)

    SciTech Connect (OSTI)

    William J. Schroeder

    2011-11-13

    This report contains the comprehensive summary of the work performed on the SBIR Phase II, Collaborative Visualization for Large-Scale Accelerator Electromagnetic Modeling at Kitware Inc. in collaboration with Stanford Linear Accelerator Center (SLAC). The goal of the work was to develop collaborative visualization tools for large-scale data as illustrated in the figure below. The solutions we proposed address the typical problems faced by geographicallyand organizationally-separated research and engineering teams, who produce large data (either through simulation or experimental measurement) and wish to work together to analyze and understand their data. Because the data is large, we expect that it cannot be easily transported to each team member's work site, and that the visualization server must reside near the data. Further, we also expect that each work site has heterogeneous resources: some with large computing clients, tiled (or large) displays and high bandwidth; others sites as simple as a team member on a laptop computer. Our solution is based on the open-source, widely used ParaView large-data visualization application. We extended this tool to support multiple collaborative clients who may locally visualize data, and then periodically rejoin and synchronize with the group to discuss their findings. Options for managing session control, adding annotation, and defining the visualization pipeline, among others, were incorporated. We also developed and deployed a Web visualization framework based on ParaView that enables the Web browser to act as a participating client in a collaborative session. The ParaView Web Visualization framework leverages various Web technologies including WebGL, JavaScript, Java and Flash to enable interactive 3D visualization over the web using ParaView as the visualization server. We steered the development of this technology by teaming with the SLAC National Accelerator Laboratory. SLAC has a computationally-intensive problem

  8. ILC @ SLAC R&D Program for a Polarized RF Gun

    SciTech Connect (OSTI)

    Clendenin, J.E.; Brachman, A.; Dowell, D.H.; Garwin, E.L.; Ioakemidi, K.; Kirby, R.E.; Maruyama, T.; Miller, R.A.; Prescott, C.Y.; Wang, J.W.; Lewellen, J.W.; Prepost, R.; /Wisconsin U., Madison

    2006-01-25

    Photocathode rf guns produce high-energy low-emittance electron beams. DC guns utilizing GaAs photocathodes have proven successful for generating polarized electron beams for accelerators, but they require rf bunching systems that significantly increase the transverse emittance of the beam. With higher extraction field and beam energy, rf guns can support higher current densities at the cathode. The source laser system can then be used to generate the high peak current, relatively low duty-factor micropulses required by the ILC without the need for post-extraction rf bunching. The net result is that the injection system for a polarized rf gun can be identical to that for an unpolarized rf gun. However, there is some uncertainty as to the survivability of an activated GaAs cathode in the environment of an operating rf gun. Consequently, before attempting to design a polarized rf gun for the ILC, SLAC plans to develop an rf test gun to demonstrate the rf operating conditions suitable for an activated GaAs cathode.

  9. Documenting the Physical Universe:Preserving the Record of SLAC from 1962 to 2005

    SciTech Connect (OSTI)

    Deken, Jean Marie; /SLAC

    2006-03-10

    Since 1905, Albert Einstein's ''miraculous year'', modern physics has advanced explosively. In 2005, the World Year of Physics, a session at the SAA Annual meeting discusses three institutional initiatives--Einstein's collected papers, an international geophysical program, and a research laboratory--to examine how physics and physicists are documented and how that documentation is being collected, preserved, and used. This paper provides a brief introduction to the research laboratory (SLAC), discusses the origins of the SLAC Archives and History Office, its present-day operations, and the present and future challenges it faces in attempting to preserve an accurate historical record of SLAC's activities.

  10. Support and utilization of the LSI-11 processor family at SLAC

    SciTech Connect (OSTI)

    Kieffer, J.; Logg, C.A.; Farwell, D.E.

    1981-01-01

    Microcomputer systems based on the DEC LSI-11 processor family have been in use at SLAC for five years. They are used for a wide variety of applications. The support of these systems is divided into three general areas: engineering, maintenance, and software. Engineering specifies the system to match user requirements. SLAC has been able to design one general purpose system which can be tailored to fit many specific requirements. Maintenance provides system and component diagnostic services and repair. Software support includes software consulting services, assistance in systems design, and the development and support of special purpose operating systems and programs. These support functions are handled as subtasks by three teams in the SLAC Electronics Instrumentation Group. Each of these teams utilizes several LSI-11 systems in the performance of its primary tasks. They work closely together to jointly provide overall support for the larger SLAC community.

  11. Microsoft Word - aac2012_Li_1_WG4-SLAC-PUB-15212.doc

    Office of Scientific and Technical Information (OSTI)

    et al., "Results from Plasma Wakefield Experiments at FACET", IPAC'11, San Sebastian, Spain, 2011, SLAC-PUB-14560. 5. E. Adli et al., to be published. 6. S.Z. Li and M.J. Hogan,...

  12. OSTIblog Articles in the slac Topic | OSTI, US Dept of Energy...

    Office of Scientific and Technical Information (OSTI)

    ... And some material, let's face it, isn't worth saving. Between this blog and Archimedes' method of mechanical theorems, the work that SLAC was looking at, which would you save? What ...

  13. SLAC Regional High School Science Bowl| U.S. DOE Office of Science (SC)

    Office of Science (SC) Website

    SLAC Regional High School Science Bowl National Science Bowl® (NSB) NSB Home About Regional Competitions Rules, Forms, and Resources High School Regionals Middle School Regionals National Finals Volunteers Key Dates Frequently Asked Questions News Media Contact Us WDTS Home Contact Information National Science Bowl® U.S. Department of Energy SC-27/ Forrestal Building 1000 Independence Ave., SW Washington, DC 20585 E: Email Us High School Regionals SLAC Regional High School Science Bowl Print

  14. LINAC Coherent Light Source

    Broader source: Energy.gov [DOE]

    Forty years after the Stanford Linear Accelerator Center (now the SLAC National Accelerator Laboratory) developed its two-mile-long linear accelerator (linac), it received approval from the...

  15. High Gradient Accelerator Cavities Using Atomic Layer Deposition

    SciTech Connect (OSTI)

    Ives, Robert Lawrence; Parsons, Gregory; Williams, Philip; Oldham, Christopher; Mundy, Zach; Dolgashev, Valery

    2014-12-09

    In the Phase I program, Calabazas Creek Research, Inc. (CCR), in collaboration with North Carolina State University (NCSU), fabricated copper accelerator cavities and used Atomic Layer Deposition (ALD) to apply thin metal coatings of tungsten and platinum. It was hypothesized that a tungsten coating would provide a robust surface more resistant to arcing and arc damage. The platinum coating was predicted to reduce processing time by inhibiting oxides that form on copper surfaces soon after machining. Two sets of cavity parts were fabricated. One was coated with 35 nm of tungsten, and the other with approximately 10 nm of platinum. Only the platinum cavity parts could be high power tested during the Phase I program due to schedule and funding constraints. The platinum coated cavity exhibit poor performance when compared with pure copper cavities. Not only did arcing occur at lower power levels, but the processing time was actually longer. There were several issues that contributed to the poor performance. First, machining of the base copper cavity parts failed to achieve the quality and cleanliness standards specified to SLAC National Accelerator Center. Secondly, the ALD facilities were not configured to provide the high levels of cleanliness required. Finally, the nanometer coating applied was likely far too thin to provide the performance required. The coating was ablated or peeled from the surface in regions of high fields. It was concluded that the current ALD process could not provide improved performance over cavities produced at national laboratories using dedicated facilities.

  16. Accelerator Science

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

    Accelerator Science Accelerator Science ReframAccelerator.jpg Particle accelerators are among the largest, most complex, and most important scientific instruments in the world....

  17. A Look Inside SLAC's Battery Lab - Joint Center for Energy Storage

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

    A Little Shade Can Go a Long Way A Little Shade Can Go a Long Way May 10, 2010 - 11:02am Addthis Allison Casey Senior Communicator, NREL Spring is my favorite time of year. The snow (finally!) stops, the temperature is perfect, and everything is colorful again. We rarely need to turn on the heat or air conditioner to stay comfortable at home, and there's nothing better than a relaxing evening on the deck. But that doesn't last long, and soon the hot days of summer will be upon us. At my house,

  18. Initial Testing of the Mark-0 X-Band RF Gun at SLAC

    SciTech Connect (OSTI)

    Vlieks, Arnold; Adolphsen, C.; Dolgashev, V.; Lewandowski, J.; Limborg, Cecile; Weathersby, S.; /SLAC

    2012-06-06

    A new X-band RF gun (Mark-0) has been assembled, tuned and was tested in the ASTA facility at SLAC. This gun has been improved from an earlier gun used in Compton-scattering experiments at SLAC by the introduction of a racetrack dual-input coupler to reduce quadrupole fields. Waveguide-to-coupler irises were also redesigned to reduce surface magnetic fields and therefore peak pulse surface heating. Tests of this photocathode gun will allow us to gain early operational experience for beam tests of a new gun with further improvements (Mark-1) being prepared for SLAC's X-Band Test Area (XTA) program and the LLNL MEGa-ray program. Results of current testing up to {approx} 200 MV/m peak surface Electric fields are presented.

  19. Fermilab | Tevatron | Accelerator

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

    Accelerator photo Fermilab is home to the Tevatron, once the most powerful particle accelerator in the United States and the second most powerful particle accelerator in the world. The Tevatron was the second most powerful particle accelerator in the world before it shut down on Sept. 29, 2011. It accelerated beams of protons and antiprotons to 99.999954 percent of the speed of light around a four-mile circumference. The two beams collided at the centers of two 5,000-ton detectors positioned

  20. Electroweak Radiative Corrections to the Parity-violating Asymmetry for SLAC Experiment E158

    SciTech Connect (OSTI)

    Zykunov, Vladimir A.; /Gomel State Tech. U.

    2012-04-04

    Electroweak radiative corrections to observable quantities of Moeller scattering of polarized particles are calculated. We emphasize the contribution induced by infrared divergent parts of cross section. The covariant method is used to remove infrared divergences, so that our results do not involve any unphysical parameters. When applied to the kinematics of SLAC E158 experiment, these corrections reduce the parity violating asymmetry by about -6.5% at E = 48 GeV and y = 0.5, and kinematically weighted 'hard' bremsstrahlung effect for SLAC E158 is {approx} 1%.

  1. Quality Assurance Plan for Field Activities at the Natural and Accelerated Bioremediation Research (NABIR) Field Research Center (FRC), Oak Ridge, Tennessee

    SciTech Connect (OSTI)

    Brandt, C.C.

    2002-02-28

    The Environmental Sciences Division (ESD) at Oak Ridge National Laboratory (ORNL) has established a Natural and Accelerated Bioremediation Research (NABIR) program Field Research Center (FRC) for the U.S. Department of Energy (DOE) Office of Biological and Environmental Research. The FRC is located in Bear Creek Valley within the Y-12 Plant area of responsibility on DOE's Oak Ridge Reservation in Tennessee. The NABIR program is a long-term effort designed to increase the understanding of fundamental biogeochemical processes that would allow the use of bioremediation approaches for cleaning up DOE's contaminated legacy waste sites. The FRC provides a site for investigators in the NABIR program to conduct research and obtain samples related to in situ bioremediation. The FRC is integrated with existing and future laboratory and field research and provides a means of examining the biogeochemical processes that influence bioremediation under controlled small-scale field conditions. This Quality Assurance Plan (QAP) documents the quality assurance protocols for field and laboratory activities performed by the FRC staff. It supplements the requirements in the ORNL Nuclear Quality Assurance Program and the ESD Quality Assurance Program. The QAP addresses the requirements in Title 10 CFR, Part 830 Subpart A, ''Quality Assurance Requirements'', using a graded approach appropriate for Research and Development projects based on guidance from ''Implementation Guide for Quality Assurance Programs for Basic and Applied Research'' (DOE-ER-STD-6001-92). It also supports the NABIR FRC Management Plan (Watson and Quarles 2000a) which outlines the overall procedures, roles and responsibilities for conducting research at the FRC. The QAP summarizes the organization, work activities, and qualify assurance and quality control protocols that will be used to generate scientifically defensible data at the FRC. The QAP pertains to field measurements and sample collection conducted by the

  2. Energy Frontier Research Centers: A View from Senior EFRC Representatives (2011 EFRC Summit, panel session)

    ScienceCinema (OSTI)

    Drell, Persis (SLAC); Armstrong, Neal (University of Arizona); Carter, Emily (Princeton University); DePaolo, Don (Lawrence Berkeley National Laboratory); Gunnoe, Brent (University of Virginia)

    2012-03-16

    A distinguished panel of scientists from the EFRC community provide their perspective on the importance of EFRCs for addressing critical energy needs at the 2011 EFRC Summit. Persis Drell, Director at SLAC, served as moderator. Panel members are Neal Armstrong (Director of the Center for Interface Science: Solar Electric Materials, led by the University of Arizona), Emily Carter (Co-Director of the Combustion EFRC, led by Princeton University. She is also Team Leader of the Heterogeneous Functional Materials Center, led by the University of South Caroline), Don DePaolo (Director of the Center for Nanoscale Control of Geologic CO2, led by LBNL), and Brent Gunnoe (Director of the Center for Catalytic Hydrocarbon Functionalization, led by the University of Virginia). The 2011 EFRC Summit and Forum brought together the EFRC community and science and policy leaders from universities, national laboratories, industry and government to discuss "Science for our Nation's Energy Future." In August 2009, the Office of Science established 46 Energy Frontier Research Centers. The EFRCs are collaborative research efforts intended to accelerate high-risk, high-reward fundamental research, the scientific basis for transformative energy technologies of the future. These Centers involve universities, national laboratories, nonprofit organizations, and for-profit firms, singly or in partnerships, selected by scientific peer review. They are funded at $2 to $5 million per year for a total planned DOE commitment of $777 million over the initial five-year award period, pending Congressional appropriations. These integrated, multi-investigator Centers are conducting fundamental research focusing on one or more of several ?grand challenges? and use-inspired ?basic research needs? recently identified in major strategic planning efforts by the scientific community. The purpose of the EFRCs is to integrate the talents and expertise of leading scientists in a setting designed to accelerate

  3. Gravitational Instability of a Nonrotating Galaxy (Conference...

    Office of Scientific and Technical Information (OSTI)

    Resource Relation: Conference: Invited talk at Particle Accelerator Conference (PAC 09), Vancouver, BC, Canada, 4-8 May 2009 Research Org: Stanford Linear Accelerator Center (SLAC) ...

  4. Emittance and Current of Electrons Trapped in a Plasma Wakefield...

    Office of Scientific and Technical Information (OSTI)

    Research Org: Stanford Linear Accelerator Center (SLAC) Sponsoring Org: USDOE Country of Publication: United States Language: English Subject: 43 PARTICLE ACCELERATORS; ...

  5. Environmental Assessment for Selection and Operation of the Proposed Field Research Centers for the Natural and Accelerated Bioremediation Research (NABIR) Program

    SciTech Connect (OSTI)

    N /A

    2000-04-18

    The US Department of Energy (DOE) Office of Biological and Environmental Research (OBER), within the Office of Science (SC), proposes to add a Field Research Center (FRC) component to the existing Natural and Accelerated Bioremediation Research (NABIR) Program. The NABIR Program is a ten-year fundamental research program designed to increase the understanding of fundamental biogeochemical processes that would allow the use of bioremediation approaches for cleaning up DOE's contaminated legacy waste sites. An FRC would be integrated with the existing and future laboratory and field research and would provide a means of examining the fundamental biogeochemical processes that influence bioremediation under controlled small-scale field conditions. The NABIR Program would continue to perform fundamental research that might lead to promising bioremediation technologies that could be demonstrated by other means in the future. For over 50 years, DOE and its predecessor agencies have been responsible for the research, design, and production of nuclear weapons, as well as other energy-related research and development efforts. DOE's weapons production and research activities generated hazardous, mixed, and radioactive waste products. Past disposal practices have led to the contamination of soils, sediments, and groundwater with complex and exotic mixtures of compounds. This contamination and its associated costs and risks represents a major concern to DOE and the public. The high costs, long duration, and technical challenges associated with remediating the subsurface contamination at DOE sites present a significant need for fundamental research in the biological, chemical, and physical sciences that will contribute to new and cost-effective solutions. One possible low-cost approach for remediating the subsurface contamination of DOE sites is through the use of a technology known as bioremediation. Bioremediation has been defined as the use of microorganisms to biodegrade or

  6. Lattice design and optimization for the PEP-X ultra low emittance storage ring at SLAC

    SciTech Connect (OSTI)

    Wang, Min-Huey; Nosochkov, Yuri; Bane, Karl; Cai, Yunhai; Hettel, Robert; Huang, Xiaobiao; /SLAC

    2011-08-12

    SLAC is developing a long-range plan to transfer the evolving scientific programs at SSRL from the SPEAR3 light source to a much higher performing photon source. One of the possibilities is a new PEP-X 4.5 GeV storage ring that would be housed in the 2.2 km PEP-II tunnel. The PEP-X is designed to produce photon beams having brightness near 10{sup 22} (ph/s/mm{sup 2}/mrad{sup 2}/0.1% BW) at 10 keV with 3.5 m undulator at beam current of 1.5 A. This report presents an overview of the PEP-X baseline lattice design and describes the lattice optimization procedures in order to maximize the beam dynamic aperture. The complete report of PEP-X baseline design is published in SLAC report.

  7. SLAC E155 and E155x Numeric Data Results and Data Plots: Nucleon Spin Structure Functions

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    The extension run, E155x, also makes data available. See the E155x home page at http://www.slac.stanford.edu/exp/e155/e155extension/e155x.html

  8. 2003 SSRL Accelerator Physics Schedule

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

    SSRL Accelerator Physics Schedule Proposal Deadline Schedule Announcement Experimental Period Duration Mon, Dec 02, '02 17:00 Tue, Dec 03, '02 13:00 Mon, Dec 09, '02 18:00-Wed, Dec 11, '02 02:00 32 hrs Tue, Jan 07, 09:00 Tue, Jan 07, 13:00 Mon, Jan 13, 18:00-Wed, Jan 15, 02:00 32 hrs Mon, Feb 03, 17:00 Tue, Feb 04, 17:00 Mon, Feb 10, 18:00-Wed, Feb 12, 02:00 32 hrs Mon, Feb 24, 17:00 Tue, Feb 25, 13:00 Mon, Mar 03, 18:00-Wed, Mar 05, 02:00 32 hrs SLAC SSRL SSRL Last Updated: 25 February 2003

  9. Simulation of Bunch Lengthening and Sawtooth Mode in the SLAC Damping Rings

    SciTech Connect (OSTI)

    Warnock, Robert L.

    2000-06-29

    The authors study longitudinal coherent motion of a stored electron beam by a time domain integration of the nonlinear Vlasov-Fokker-Planck equation. For the present SLAC damping rings the authors found several features in agreement with experiment. This report emphasizes the earlier vacuum chamber of the rings, replaced in 1992--93. Nonlinear effects are much stronger for the old chamber, and the computed phenomena more various.

  10. Design and fabrication of a traveling-wave muffin-tin accelerating structure at 90 GHz

    SciTech Connect (OSTI)

    Chou, P.J.; Bowden, G.B.; Copeland, M.R.; Menegat, A.; Siemann, R.H.; Henke, H.

    1997-05-01

    A prototype of a muffin-tin accelerating structure operating at 32 times the SLAC frequency (2.856 GHz) was built for research in high gradient acceleration. A traveling-wave design with single input and output feeds was chosen for the prototype which was fabricated by wire electrodischarge machining. Features of the mechanical design for the prototype are described. Design improvements are presented including considerations of cooling and vacuum.

  11. Report of the ICFA Beam Dynamics Workshop 'Accelerators for a Higgs

    Office of Scientific and Technical Information (OSTI)

    Factory: Linear Vs. Circular' (HF2012) (Conference) | SciTech Connect Conference: Report of the ICFA Beam Dynamics Workshop 'Accelerators for a Higgs Factory: Linear Vs. Circular' (HF2012) Citation Details In-Document Search Title: Report of the ICFA Beam Dynamics Workshop 'Accelerators for a Higgs Factory: Linear Vs. Circular' (HF2012) Authors: Blondel, Alain ; Chao, Alex ; /Geneva U., astr /SLAC ; Chou, Weiren ; /Fermilab ; Gao, Jie ; /Beijing, Inst. High Energy Phys. ; Schulte, Daniel ;

  12. Ion Acceleration by Laser Plasma Interaction from Cryogenic Micro Jets - Oral Presentation

    SciTech Connect (OSTI)

    Propp, Adrienne

    2015-08-25

    Processes that occur in extreme conditions, such as in the center of stars and large planets, can be simulated in the laboratory using facilities such as SLAC National Accelerator Laboratory and the Jupiter Laser Facility (JLF) at Lawrence Livermore National Laboratory (LLNL). These facilities allow scientists to investigate the properties of matter by observing their interactions with high power lasers. Ion acceleration from laser plasma interaction is gaining greater attention today due to its widespread potential applications, including proton beam cancer therapy and fast ignition for energy production. Typically, ion acceleration is achieved by focusing a high power laser on thin foil targets through a mechanism called Target Normal Sheath Acceleration. Based on research and recent experiments, we hypothesized that a pure liquid cryogenic jet would be an ideal target for this type of interaction, capable of producing the highest proton energies possible with today’s laser technologies. Furthermore, it would provide a continuous, pure target, unlike metal foils which are consumed in the interaction and easily contaminated. In an effort to test this hypothesis and investigate new, potentially more efficient mechanisms of ion acceleration, we used the 527 nm split beam, frequency-doubled TITAN laser at JLF. Data from the cryogenic jets was limited due to the flow of current up the jet into the nozzle during the interaction, heating the jet and damaging the orifice. However, we acheived a pure proton beam with an indiciation of a monoenergetic feature. Furthermore, data from gold and carbon wires showed surprising and interesting results. Preliminary analysis of data from two ion emission diagnostics, Thomson parabola spectrometers (TPs) and radio chromic films (RCFs), suggests that shockwave acceleration occurred rather than target normal sheath acceleration, the standard mechanism of ion acceleration. Upon completion of the experiment at TITAN, I researched the

  13. A 4 to 0.1 nm FEL Based on the SLAC Linac

    SciTech Connect (OSTI)

    Pellegrini, C.; /UCLA

    2012-06-05

    The author show that using existing electron gun technology and a high energy linac like the one at SLAC, it is possible to build a Free Electron Laser operating around the 4 nm water window. A modest improvement in the gun performance would further allow to extend the FEL to the 0.1 nm region. Such a system would produce radiation with a brightness many order of magnitude above that of any synchrotron radiation source, existing or under construction, with laser power in the multigawatt region and subpicosecond pulse length.

  14. 'Erratic' Lasers Pave Way for Tabletop Accelerators

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

    Their work was supported by supercomputing resources at the National Energy Research Scientific Computing Center (NERSC). Traditional accelerators, like the Large Hadron Collider ...

  15. Independent Oversight Inspection, Stanford Linear Accelerator...

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

    Safety, and Health Programs at the Stanford Linear Accelerator Center This report provides the results of an inspection of the environment, safety, and health programs at the ...

  16. Accelerating Science

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

    Accelerating Science with the NERSC Burst Buffer Early User Program Wahid Bhimji , ... Early User Program, focused on real science applications and workflows that can ...

  17. Market Acceleration

    SciTech Connect (OSTI)

    Solar Energy Technologies Program

    2010-09-28

    The fact sheet summarizes the goals and activities of the DOE Solar Energy Technologies Program efforts within its market acceleration subprogram.

  18. Accelerators, Electrodynamics

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

    icon-science.jpg Accelerators, Electrodynamics National security depends on science and technology. The United States relies on Los Alamos National Laboratory for the best of...

  19. Acceleration Fund

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

    New Mexico Connect activities through the Regional Development Corporation. "This is the third round of proposals for these Venture Acceleration Fund awards, which have already...

  20. Lujan Neutron Scattering Center

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

    responds to radiological incident August 27, 2012 The Laboratory is investigating the inadvertent spread of Technetium 99 by employees and contractors at the Lujan Neutron Scattering Center August 27, 2012-The Laboratory is investigating the inadvertent spread of Technetium 99 by employees and contractors at the Lujan Neutron Scattering Center at the Los Alamos Neutron Science Center (LANSCE), a multidisciplinary accelerator facility used for both civilian and national security research. The

  1. Preliminary Results From the GLAST Silicon Tracker Beam Test...

    Office of Scientific and Technical Information (OSTI)

    for VERTEX 2006: 15th International Workshop on Vertex Detectors, Perugia, Italy, 25-29 Sep 2006 Research Org: Stanford Linear Accelerator Center (SLAC) Sponsoring Org: USDOE ...

  2. Exclusive Hadronic Final States in E+ E- Interactions at BaBar...

    Office of Scientific and Technical Information (OSTI)

    Workshop on Deep-Inelastic Scattering and Related Subjects (DIS2007), Munich, Germany, 16-20 Apr 2007 Research Org: Stanford Linear Accelerator Center (SLAC) Sponsoring...

  3. 2013 Annual Planning Summary for the Berkeley Site Office | Department...

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

    More Documents & Publications 2010 Annual Planning Summary for Stanford Linear Accelerator Center Site Office (SLAC) 2013 Annual Planning Summary for the Berkeley Site Office 2012 ...

  4. An Automated Implementation of On-shell Methods for One-Loop...

    Office of Scientific and Technical Information (OSTI)

    Review D Research Org: Stanford Linear Accelerator Center (SLAC) Sponsoring Org: USDOE Country of Publication: United States Language: English Subject: Phenomenology-HEP,HEPPH

  5. OSTIblog Articles in the Stanford Topic | OSTI, US Dept of Energy...

    Office of Scientific and Technical Information (OSTI)

    Originally a particle physics research center, SLAC is now a multipurpose laboratory for astrophysics, photon science, accelerator and particle... Related Topics: Nobel Prize, ...

  6. Taylor Elected to Royal Society of London

    Office of Scientific and Technical Information (OSTI)

    SLAC, 28 May 1997 Taylor Elected to Royal Society of London Richard Taylor, physics professor at the Stanford Linear Accelerator Center and 1990 Nobel Prize winner, was recently ...

  7. The E158 Experiment (Conference) | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    From parity Violation to Hadronic Structure and More (PAVI06), Milos, Greece, 16-20 May 2006 Research Org: Stanford Linear Accelerator Center (SLAC) Sponsoring Org: USDOE Country...

  8. Search for: All records | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    Baciu, Paul" Name Name ORCID Search Authors Type: All BookMonograph ConferenceEvent ... Center, Casper, WY (United States) S. M. Stoller (United States) SLAC National Accelerator ...

  9. Search for: All records | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    Hovland, Paul" Name Name ORCID Search Authors Type: All BookMonograph ConferenceEvent ... Center, Casper, WY (United States) S. M. Stoller (United States) SLAC National Accelerator ...

  10. FY_2010_REPORTING_INSTRUCTIONS_TRANSMITTAL_8-26-10-Horn.pdf ...

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

    AND PROJECTS AGENCY WESTERN AREA POWER ADMINISTRATION 2008 report transmittal letter page 2010 Annual Planning Summary for Stanford Linear Accelerator Center Site Office (SLAC

  11. 2014 Annual Planning Summary for the NNSA Global Threat Reduction...

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

    PDF icon NNSA-GTRI-NEPA-APS-2014.pdf More Documents & Publications 2010 Annual Planning Summary for Stanford Linear Accelerator Center Site Office (SLAC) 2012 Annual Planning ...

  12. EA-1426: Finding of No Significant Impact | Department of Energy

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

    EA-1426: Finding of No Significant Impact Linac Coherent Light Source Project, Stanford ... Coherent Light Source (LCLS) at the Stanford Linear Accelerator Center (SLAC), ...

  13. Discovery of Four Gravitationally Lensed Quasarsfrom the Sloan...

    Office of Scientific and Technical Information (OSTI)

    Resource Type: Journal Article Resource Relation: Journal Name: The Astronimical Journal Research Org: Stanford Linear Accelerator Center (SLAC) Sponsoring Org: USDOE...

  14. SLAC E155 and E155x Numeric Data Results and Data Plots: Nucleon Spin Structure Functions

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    The nucleon spin structure functions g1 and g2 are important tools for testing models of nucleon structure and QCD. Experiments at CERN, DESY, and SLAC have measured g1 and g2 using deep inelastic scattering of polarized leptons on polarized nucleon targets. The results of these experiments have established that the quark component of the nucleon helicity is much smaller than naive quark-parton model predictions. The Bjorken sum rule has been confirmed within the uncertainties of experiment and theory. The experiment E155 at SLAC collected data in March and April of 1997. Approximately 170 million scattered electron events were recorded to tape. (Along with several billion inclusive hadron events.) The data were collected using three independent fixed-angle magnetic spectrometers, at approximately 2.75, 5.5, and 10.5 degrees. The momentum acceptance of the 2.75 and 5.5 degree spectrometers ranged from 10 to 40 GeV, with momentum resolution of 2-4%. The 10.5 degree spectrometer, new for E155, accepted events of 7 GeV to 20 GeV. Each spectrometer used threshold gas Cerenkov counters (for particle ID), a segmented lead-glass calorimeter (for energy measurement and particle ID), and plastic scintillator hodoscopes (for tracking and momentum measurement). The polarized targets used for E155 were 15NH3 and 6LiD, as targets for measuring the proton and deuteron spin structure functions respectively. Experiment E155x recently concluded a successful two-month run at SLAC. The experiment was designed to measure the transverse spin structure functions of the proton and deuteron. The E155 target was also recently in use at TJNAF's Hall C (E93-026) and was returned to SLAC for E155x. E155x hopes to reduce the world data set errors on g2 by a factor of three. [Copied from http://www.slac.stanford.edu/exp/e155/e155_nickeltour.html, an information summary linked off the E155 home page at http://www.slac.stanford.edu/exp/e155/e155_home.html. The extension run, E155x, also makes

  15. Poeh Cultural Center wins grant

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

    Poeh Cultural Center wins grant, educates public Community Connections: Your link to news and opportunities from Los Alamos National Laboratory Latest Issue: September 1, 2016 all issues All Issues » submit Poeh Cultural Center wins grant Native American Venture Acceleration Fund money helps increase education and tourism. May 2, 2016 Poeh Cultural Center and Museum received a grant through the Native American Venture Acceleration Fund in January to develop training programs for artists and to

  16. Detecting Energy Modulation in a Dielectric Laser Accelerator

    SciTech Connect (OSTI)

    Lukaczyk, Louis

    2015-08-21

    The Dielectric Laser Acceleration group at SLAC uses micro-fabricated dielectric grating structures and conventional infrared lasers to accelerator electrons. These structures have been estimated to produce an accelerating gradient up to 2 orders of magnitude greater than that produced by conventional RF accelerators. The success of the experiment depends on both the laser damage threshold of the structure and the timing overlap of femtosecond duration laser pulses with the electron bunch. In recent dielectric laser acceleration experiments, the laser pulse was shorter both temporally and spatially than the electron bunch. As a result, the laser is theorized to have interacted with only a small portion of the electron bunch. The detection of this phenomenon, referred to as partial population modulation, required a new approach to the data analysis of the electron energy spectra. A fitting function was designed to separate the accelerated electron population from the un-accelerated electron population. The approach was unsuccessful in detecting acceleration in the partial population modulation data. However, the fitting functions provide an excellent figure of merit for previous data known to contain signatures of acceleration.

  17. A New Center for Organic Electronics at Masdar Institute | Stanford

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

    Synchrotron Radiation Lightsource A New Center for Organic Electronics at Masdar Institute Friday, August 2, 2013 - 10:00am SLAC, Conference Room 137-322 Presented by Samuele Lilliu Masdar Institute is a graduate level, research-oriented university, which is focused on alternative energy, sustainability, and the environment. It is located in Masdar City in Abu Dhabi, United Arab Emirates. The project here outlined focuses on improving the performance of organic/hybrid bulk heterojunction

  18. LINEAR ACCELERATOR

    DOE Patents [OSTI]

    Colgate, S.A.

    1958-05-27

    An improvement is presented in linear accelerators for charged particles with respect to the stable focusing of the particle beam. The improvement consists of providing a radial electric field transverse to the accelerating electric fields and angularly introducing the beam of particles in the field. The results of the foregoing is to achieve a beam which spirals about the axis of the acceleration path. The combination of the electric fields and angular motion of the particles cooperate to provide a stable and focused particle beam.

  19. Linear Accelerator

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

    Linear Accelerator (LINAC) The core of the LANSCE facility is one of the nation's most powerful proton linear accelerators or LINAC. The LINAC at LANSCE has served the nation since 1972, providing the beam current required by all the experimental areas that support NNSA-DP and other DOE missions. The LINAC's capability to reliably deliver beam current is the key to the LANSCE's ability to do research-and thus the key to meeting NNSA and DOE mission deliverables. The LANSCE Accelerator The LANSCE

  20. COAXIAL TWO-CHANNEL DIELECTRIC WAKE FIELD ACCELERATOR

    SciTech Connect (OSTI)

    Hirshfield, Jay L.

    2013-04-30

    Theory, computations, and experimental apparatus are presented that describe and are intended to confirm novel properties of a coaxial two-channel dielectric wake field accelerator. In this configuration, an annular drive beam in the outer coaxial channel excites multimode wakefields which, in the inner channel, can accelerate a test beam to an energy much higher than the energy of the drive beam. This high transformer ratio is the result of judicious choice of the dielectric structure parameters, and of the phase separation between drive bunches and test bunches. A structure with cm-scale wakefields has been build for tests at the Argonne Wakefield Accelerator Laboratory, and a structure with mm-scale wakefields has been built for tests at the SLAC FACET facility. Both tests await scheduling by the respective facilities.

  1. ACCELERATE ENERGY

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

    Obama, State of the Union, Feb. 13, 2013 The U.S. Department of Energy, Council on Competitiveness and Alliance to Save Energy have joined forces to undertake in Accelerate Energy...

  2. Acceleration switch

    DOE Patents [OSTI]

    Abbin, J.P. Jr.; Devaney, H.F.; Hake, L.W.

    1979-08-29

    The disclosure relates to an improved integrating acceleration switch of the type having a mass suspended within a fluid filled chamber, with the motion of the mass initially opposed by a spring and subsequently not so opposed.

  3. Acceleration switch

    DOE Patents [OSTI]

    Abbin, Jr., Joseph P.; Devaney, Howard F.; Hake, Lewis W.

    1982-08-17

    The disclosure relates to an improved integrating acceleration switch of the type having a mass suspended within a fluid filled chamber, with the motion of the mass initially opposed by a spring and subsequently not so opposed.

  4. Acceleration switch

    DOE Patents [OSTI]

    Abbin, J.P. Jr.; Middleton, J.N.; Schildknecht, H.E.

    1979-08-20

    An improved acceleration switch is described which is of the type having a mass suspended within a chamber, having little fluid damping at low g levels and high fluid damping at high g levels.

  5. Acceleration switch

    DOE Patents [OSTI]

    Abbin, Jr., Joseph P.; Middleton, John N.; Schildknecht, Harold E.

    1981-01-01

    The disclosure relates to an improved acceleration switch, of the type having a mass suspended within a chamber, having little fluid damping at low g levels and high fluid damping at high g levels.

  6. ION ACCELERATOR

    DOE Patents [OSTI]

    Bell, J.S.

    1959-09-15

    An arrangement for the drift tubes in a linear accelerator is described whereby each drift tube acts to shield the particles from the influence of the accelerating field and focuses the particles passing through the tube. In one embodiment the drift tube is splii longitudinally into quadrants supported along the axis of the accelerator by webs from a yoke, the quadrants. webs, and yoke being of magnetic material. A magnetic focusing action is produced by energizing a winding on each web to set up a magnetic field between adjacent quadrants. In the other embodiment the quadrants are electrically insulated from each other and have opposite polarity voltages on adjacent quadrants to provide an electric focusing fleld for the particles, with the quadrants spaced sufficienily close enough to shield the particles within the tube from the accelerating electric field.

  7. Accelerator Systems

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

    Accelerator Systems Accelerator Systems MaRIE will provide a capability to address the control of performance and production of weapons materials at the mesoscale. MaRIE fills a critical gap in length scale between the integral scale addressed by studies conducted at DARHT, U1a, NIF, and Z. CONTACT Richard Sheffield (505) 667-1237 Email Revolutionizing Microstructural Physics to Empower Nuclear Energy Realizing MaRIE's full suite of capabilities requires developing and integrating a suite of

  8. Independent Oversight Inspection, Stanford Linear Accelerator Center -

    Office of Environmental Management (EM)

    Energy Plant - June 2009 Independent Oversight Inspection, Pantex Plant - June 2009 June 2009 Inspection of Environment, Safety, and Health Programs at the Pantex Plant This report documents the results of an inspection of the environment, safety, and health programs at the Department of Energy's (DOE) Pantex Plant. The inspection was performed during March and April 2009 by the DOE Office of Independent Oversight's Office of Environment, Safety and Health Evaluations, which is within the

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

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

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

  10. Fermilab | Illinois Accelerator Research Center | Funding and...

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

    In addition, Fermilab envisions IARC projects funded via grants from SBIRSTTR, CRADA, DARPA, DTRA, ARPA-E, Illinois DCFO, private industry, etc. Interested companies are ...

  11. CAMS Center for Accelerator Mass Spectrometry

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

    of the art instrumentation, to develop and apply unique, ultra-sensitive isotope ratio measurement and ion beam analytical techniques to address a broad spectrum of scientific...

  12. Fermilab | Illinois Accelerator Research Center | Construction Progress

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

    Construction Progress 08/14/2013 photo photo 04/15/2013 photo 04/01/2013 photo 03/26/2013 photo 03/19/2013 photo 03/11/2013 photo 03/04/2013 photo 02/25/2013 photo 02/18/2013 photo 02/11/2013 photo 02/06/2013 photo 01/07/2013 photo 01/02/2013 photo 12/03/2012 photo 11/19/2012 photo 11/06/2012 photo 10/29/2012 photo 10/22/2012 photo 10/15/2012 photo 10/08/2012 photo 09/21/2012 photo 08/29/2012 photo 08/28/2012 photo 07/13/2012 photo 06/29/2012 photo

  13. Fermilab | Illinois Accelerator Research Center | Fermilab Facilities

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

    Facilities Through IARC access to many Fermilab facilities would be possible. These facilities are further detailed below, but include: conventional and superconducting magnet testing and assembly facilities, SRF cavity assembly, processing and test facilities, access to various particle beams, superconducting cabling manufacturing and testing, particle detector manufacturing and development and high performance computing resources. 1) Beam Test Facilities: NML Pulsed SRF Facility A RF unit test

  14. Fermilab | Illinois Accelerator Research Center | IARC Facilities

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

    IARC Facilities Rendering Visit the IARC Multimedia Gallery The IARC Facility Located in the heart of the industrial area of the Fermi lab campus, IARC will consist of 36, 000 square feet of heavy assembly, technical, and office space in the existing heavy industrial building plus an additional 47,000 square feet of technical, office and educational space in the State funded addition. The resulting 83,000 square foot IARC complex will provide space and infrastructure for scientists and engineers

  15. Fermilab | Illinois Accelerator Research Center | Image Gallery

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

    Multimedia Gallery Pictures of the Finished OTE Building thumbnail Front view of IARC with Wilson Hall in the Background. Download: Hi-Res | Med-Res thumbnail Front view of IARC with Wilson Hall in the Background. (Pictures courtesy of Ross Barney Architects, Photographer Kate Joyce Studios). Download: Med-Res thumbnail View of east side of OTE building. (Pictures courtesy of Ross Barney Architects, Photographer Kate Joyce Studios). Download: Med-Res thumbnail Ground view of west side of OTE

  16. Accelerator Division

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

    and Events Transportation Lederman Science Center Fermilab Cultural Events Fermilab Natural Areas Barn Dances Sign up for community newsletter Resources for ... Resources for...

  17. SLAC Partners with Palo Alto Firm to Make Klystrons Much More...

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

    that generate microwaves for accelerating particles - much more energy efficient. The new technology, called GREEN-RF, could dramatically cut the cost of operating both big ...

  18. The Turn-on of LCLS: the X-Ray Free Electron Laser at SLAC ( Keynote - 2011 JGI User Meeting)

    ScienceCinema (OSTI)

    Drell, Persis [SLAC Director

    2011-06-08

    The U.S. Department of Energy Joint Genome Institute (JGI) invited scientists interested in the application of genomics to bioenergy and environmental issues, as well as all current and prospective users and collaborators, to attend the annual DOE JGI Genomics of Energy & Environment Meeting held March 22-24, 2011 in Walnut Creek, Calif. The emphasis of this meeting was on the genomics of renewable energy strategies, carbon cycling, environmental gene discovery, and engineering of fuel-producing organisms. The meeting features presentations by leading scientists advancing these topics. SLAC National Laboratory Director Persis Drell gives a keynote talk on "The Turn-on of LCLS: the X-Ray Free-Electron Laser at SLAC" at the 6th Genomics of Energy & Environment Meeting on March 22, 2011

  19. The Turn-on of LCLS: the X-Ray Free Electron Laser at SLAC ( Keynote - 2011 JGI User Meeting)

    SciTech Connect (OSTI)

    Drell, Persis [SLAC Director] [SLAC Director

    2011-03-22

    The U.S. Department of Energy Joint Genome Institute (JGI) invited scientists interested in the application of genomics to bioenergy and environmental issues, as well as all current and prospective users and collaborators, to attend the annual DOE JGI Genomics of Energy & Environment Meeting held March 22-24, 2011 in Walnut Creek, Calif. The emphasis of this meeting was on the genomics of renewable energy strategies, carbon cycling, environmental gene discovery, and engineering of fuel-producing organisms. The meeting features presentations by leading scientists advancing these topics. SLAC National Laboratory Director Persis Drell gives a keynote talk on "The Turn-on of LCLS: the X-Ray Free-Electron Laser at SLAC" at the 6th Genomics of Energy & Environment Meeting on March 22, 2011

  20. CLSF (Center for Lignocellulose Structure and Formation) - About the Center

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

    About the Center EFRCs (Energy Frontier Research Centers) The Center for Lignocellulose Structure and Formation (CLSF) is one of 46 Energy Frontier Research Centers (EFRC) initially established in 2009 by the US Department of Energy to accelerate research to meet critical energy challenges of the 21st century. EFRCs integrate the expertise of multiple leading scientific investigators to enable fundamental research of a scope and complexity that would not be possible with the small group research

  1. A Proof-of-Principle Echo-enabled Harmonic Generation Free Electron Laser Experiment at SLAC

    SciTech Connect (OSTI)

    Pernet, Pierre-Louis

    2010-06-24

    With the advent of X-ray Free Electron Lasers (FELs), new methods have been developed to extend capabilities at short wavelengths beyond Self-Amplified Spontaneous Emission (SASE). In particular, seeding of a FEL allows for temporal control of the radiation pulse and increases the peak brightness by orders of magnitude. Most recently, Gennady Stupakov and colleagues at SLAC proposed a new technique: Echo-Enabled Harmonic Generation (EEHG). Here a laser microbunches the beam in an undulator and the beam is sheared in a chicane. This process is repeated with a second laser, undulator and chicane. The interplay between these allows a seeding of the X-ray laser up to the 100th harmonic of the first laser. After introducing the physics of FELs and the EEHG seeding technique, we describe contributions to the experimental effort. We will present detailed studies of the experiment including the choice of parameters and their optimization, the emittance effect, spontaneous emission in the undulators, the second laser phase effect, and measurements of the jitter between RF stations. Finally, the status and preliminary results of the Echo-7 experiment will be outlined.

  2. Cascaded target normal sheath acceleration

    SciTech Connect (OSTI)

    Wang, W. P.; Shen, B. F.; Zhang, X. M.; Wang, X. F.; Xu, J. C.; Zhao, X. Y.; Yu, Y. H.; Yi, L. Q.; Shi, Y.; Zhang, L. G.; Xu, T. J.; Xu, Z. Z.

    2013-11-15

    A cascaded target normal sheath acceleration (TNSA) scheme is proposed to simultaneously increase energy and improve energy spread of a laser-produced mono-energetic proton beam. An optimum condition that uses the maximum sheath field to accelerate the center of the proton beam is theoretically found and verified by two-dimensional particle-in-cell simulations. An initial 10 MeV proton beam is accelerated to 21 MeV with energy spread decreased from 5% to 2% under the optimum condition during the process of the cascaded TNSA. The scheme opens a way to scale proton energy lineally with laser energy.

  3. A Massively Parallel Solver for the Mechanical Harmonic Analysis of Accelerator Cavities

    SciTech Connect (OSTI)

    O. Kononenko

    2015-02-17

    ACE3P is a 3D massively parallel simulation suite that developed at SLAC National Accelerator Laboratory that can perform coupled electromagnetic, thermal and mechanical study. Effectively utilizing supercomputer resources, ACE3P has become a key simulation tool for particle accelerator R and D. A new frequency domain solver to perform mechanical harmonic response analysis of accelerator components is developed within the existing parallel framework. This solver is designed to determine the frequency response of the mechanical system to external harmonic excitations for time-efficient accurate analysis of the large-scale problems. Coupled with the ACE3P electromagnetic modules, this capability complements a set of multi-physics tools for a comprehensive study of microphonics in superconducting accelerating cavities in order to understand the RF response and feedback requirements for the operational reliability of a particle accelerator. (auth)

  4. ACCELERATION INTEGRATOR

    DOE Patents [OSTI]

    Pope, K.E.

    1958-01-01

    This patent relates to an improved acceleration integrator and more particularly to apparatus of this nature which is gyrostabilized. The device may be used to sense the attainment by an airborne vehicle of a predetermined velocitv or distance along a given vector path. In its broad aspects, the acceleration integrator utilizes a magnetized element rotatable driven by a synchronous motor and having a cylin drical flux gap and a restrained eddy- current drag cap deposed to move into the gap. The angular velocity imparted to the rotatable cap shaft is transmitted in a positive manner to the magnetized element through a servo feedback loop. The resultant angular velocity of tae cap is proportional to the acceleration of the housing in this manner and means may be used to measure the velocity and operate switches at a pre-set magnitude. To make the above-described dcvice sensitive to acceleration in only one direction the magnetized element forms the spinning inertia element of a free gyroscope, and the outer housing functions as a gimbal of a gyroscope.

  5. Plasma accelerator

    DOE Patents [OSTI]

    Wang, Zhehui; Barnes, Cris W.

    2002-01-01

    There has been invented an apparatus for acceleration of a plasma having coaxially positioned, constant diameter, cylindrical electrodes which are modified to converge (for a positive polarity inner electrode and a negatively charged outer electrode) at the plasma output end of the annulus between the electrodes to achieve improved particle flux per unit of power.

  6. Accelerate Performance

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

    ... Minnesota-Center for Sustainable Building Research * Xcel Energy Colorado-NREL 22 Project ... * NBIComEd Zero Energy Summit * Energy Trust of Oregon WebEx * NYSERDA New Construction ...

  7. Compact accelerator

    DOE Patents [OSTI]

    Caporaso, George J.; Sampayan, Stephen E.; Kirbie, Hugh C.

    2007-02-06

    A compact linear accelerator having at least one strip-shaped Blumlein module which guides a propagating wavefront between first and second ends and controls the output pulse at the second end. Each Blumlein module has first, second, and third planar conductor strips, with a first dielectric strip between the first and second conductor strips, and a second dielectric strip between the second and third conductor strips. Additionally, the compact linear accelerator includes a high voltage power supply connected to charge the second conductor strip to a high potential, and a switch for switching the high potential in the second conductor strip to at least one of the first and third conductor strips so as to initiate a propagating reverse polarity wavefront(s) in the corresponding dielectric strip(s).

  8. Finite element analyses of a linear-accelerator electron gun

    SciTech Connect (OSTI)

    Iqbal, M. E-mail: muniqbal@ihep.ac.cn; Wasy, A.; Islam, G. U.; Zhou, Z.

    2014-02-15

    Thermo-structural analyses of the Beijing Electron-Positron Collider (BEPCII) linear-accelerator, electron gun, were performed for the gun operating with the cathode at 1000 °C. The gun was modeled in computer aided three-dimensional interactive application for finite element analyses through ANSYS workbench. This was followed by simulations using the SLAC electron beam trajectory program EGUN for beam optics analyses. The simulations were compared with experimental results of the assembly to verify its beam parameters under the same boundary conditions. Simulation and test results were found to be in good agreement and hence confirmed the design parameters under the defined operating temperature. The gun is operating continuously since commissioning without any thermal induced failures for the BEPCII linear accelerator.

  9. Application Acceleration

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

    Application Acceleration on Current and Future Cray Platforms Alice Koniges, Robert Preissl, Jihan Kim, Lawrence Berkeley National Laboratory David Eder, Aaron Fisher, Nathan Masters, Velimir Mlaker, Lawrence Livermore National Laboratory Stephane Ethier, Weixing Wang, Princeton Plasma Physics Laboratory Martin Head-Gordon, University of California, Berkeley and Nathan Wichmann, Cray Inc. ABSTRACT: Application codes in a variety of areas are being updated for performance on the latest

  10. DOE - Office of Legacy Management -- Stanford Linear Accelerator...

    Office of Legacy Management (LM)

    The Stanford Linear Accelerator Center was established in 1962 as a research facility for high energy particle physics. The Environmental Management mission at this site is to ...

  11. Ground Broken for New Job-Creating Accelerator Research Facility...

    Energy Savers [EERE]

    DOE's Office of Science Director William Brinkman participated in the groundbreaking ceremony. "The Illinois Accelerator Research Center will help fuel innovation by developing ...

  12. HILO: Quasi Diffusion Accelerated Monte Carlo on Hybrid Architectures

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

    fidelity simulation of a diverse range of kinetic systems. Available for thumbnail of Feynman Center (505) 665-9090 Email HILO: Quasi Diffusion Accelerated Monte Carlo on Hybrid...

  13. Accelerators and the Accelerator Community

    SciTech Connect (OSTI)

    Malamud, Ernest; Sessler, Andrew

    2008-06-01

    In this paper, standing back--looking from afar--and adopting a historical perspective, the field of accelerator science is examined. How it grew, what are the forces that made it what it is, where it is now, and what it is likely to be in the future are the subjects explored. Clearly, a great deal of personal opinion is invoked in this process.

  14. Numerical Verification of the Power Transfer and Wakefield Coupling in the Clic Two-Beam Accelerator

    SciTech Connect (OSTI)

    Candel, Arno; Li, Z.; Ng, C.; Rawat, V.; Schussman, G.; Ko, K.; Syratchev, I.; Grudiev, A.; Wuensch, W.; /CERN

    2011-08-19

    The Compact Linear Collider (CLIC) provides a path to a multi-TeV accelerator to explore the energy frontier of High Energy Physics. Its two-beam accelerator (TBA) concept envisions complex 3D structures, which must be modeled to high accuracy so that simulation results can be directly used to prepare CAD drawings for machining. The required simulations include not only the fundamental mode properties of the accelerating structures but also the Power Extraction and Transfer Structure (PETS), as well as the coupling between the two systems. Time-domain simulations will be performed to understand pulse formation, wakefield damping, fundamental power transfer and wakefield coupling in these structures. Applying SLAC's parallel finite element code suite, these large-scale problems will be solved on some of the largest supercomputers available. The results will help to identify potential issues and provide new insights on the design, leading to further improvements on the novel two-beam accelerator scheme.

  15. VLHC accelerator physics

    SciTech Connect (OSTI)

    Michael Blaskiewicz et al.

    2001-11-01

    A six-month design study for a future high energy hadron collider was initiated by the Fermilab director in October 2000. The request was to study a staged approach where a large circumference tunnel is built that initially would house a low field ({approx}2 T) collider with center-of-mass energy greater than 30 TeV and a peak (initial) luminosity of 10{sup 34} cm{sup -2}s{sup -1}. The tunnel was to be scoped, however, to support a future upgrade to a center-of-mass energy greater than 150 TeV with a peak luminosity of 2 x 10{sup 34} cm{sup -2} sec{sup -1} using high field ({approx} 10 T) superconducting magnet technology. In a collaboration with Brookhaven National Laboratory and Lawrence Berkeley National Laboratory, a report of the Design Study was produced by Fermilab in June 2001. 1 The Design Study focused on a Stage 1, 20 x 20 TeV collider using a 2-in-1 transmission line magnet and leads to a Stage 2, 87.5 x 87.5 TeV collider using 10 T Nb{sub 3}Sn magnet technology. The article that follows is a compilation of accelerator physics designs and computational results which contributed to the Design Study. Many of the parameters found in this report evolved during the study, and thus slight differences between this text and the Design Study report can be found. The present text, however, presents the major accelerator physics issues of the Very Large Hadron Collider as examined by the Design Study collaboration and provides a basis for discussion and further studies of VLHC accelerator parameters and design philosophies.

  16. Making Galaxies: One Star at a Time (Conference) | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    National Accelerator Laboratory, Menlo Park, California, presented on September 18, ... Research Org: SLAC (SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United ...

  17. Center Organization | Center for Energy Efficient Materials

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

    Center Organization People People Scientific Advisory Board Center Organization

  18. Correlation of Beam Parameters to Decelerating Gradient in the E-167 Plasma Wakefield Acceleration Experiment

    SciTech Connect (OSTI)

    Blumenfeld, I.; Berry, M.; Decker, F.-J.; Hogan, M.J.; Ischebeck, R.; Iverson, R.; Kirby, N.; Siemann, R.; Walz, D.; Clayton, C.E.; Huang, C.; Joshi, C.; Lu, W.; Marsh, K.A.; Mori, W.B.; Zhou, M.; Katsouleas, T.C.; Muggli, P.; Oz, E.; /Southern California U.

    2007-06-27

    Recent experiments at SLAC have shown that high gradient acceleration of electrons is achievable in meter scale plasmas [1,2]. Results from these experiments show that the wakefield is sensitive to parameters in the electron beam which drives it. In the experiment the bunch length and beam waist location were varied systematically at constant charge. Here we investigate the correlation of peak beam current to the decelerating gradient. Limits on the transformer ratio will also be discussed. The results are compared to simulation.

  19. Inverse free-electron laser accelerator development

    SciTech Connect (OSTI)

    Fisher, A.; Gallardo, J.; Steenbergen, A. van; Sandweiss, J.; Fang, J.M.

    1994-06-01

    The study of the Inverse Free-Electron Laser, as a potential mode of electron acceleration, has been pursued at Brookhaven National Laboratory for a number of years. More recent studies focused on the development of a low energy (few GeV), high gradient, multistage linear accelerator. The authors are presently designing a short accelerator module which will make use of the 50 MeV linac beam and high power (2 {times} 10{sup 11} W) CO{sub 2} laser beam of the Accelerator Test Facility (ATF) at the Center for Accelerator Physics (CAP), Brookhaven National Laboratory. These elements will be used in conjunction with a fast excitation (300 {mu}sec pulse duration) variable period wiggler, to carry out an accelerator demonstration stage experiment.

  20. Naked singularities as particle accelerators

    SciTech Connect (OSTI)

    Patil, Mandar; Joshi, Pankaj S.

    2010-11-15

    We investigate here the particle acceleration by naked singularities to arbitrarily high center of mass energies. Recently it has been suggested that black holes could be used as particle accelerators to probe the Planck scale physics. We show that the naked singularities serve the same purpose and probably would do better than their black hole counterparts. We focus on the scenario of a self-similar gravitational collapse starting from a regular initial data, leading to the formation of a globally naked singularity. It is seen that when particles moving along timelike geodesics interact and collide near the Cauchy horizon, the energy of collision in the center of mass frame will be arbitrarily high, thus offering a window to Planck scale physics.

  1. Fermilab | Science | Particle Accelerators | Fermilab's Accelerator Complex

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

    Fermilab's Accelerator Complex photo Fermilab's accelerator complex comprises seven particle accelerators and storage rings. It produces the world's most powerful, high-energy neutrino beam and provides proton beams for various experiments and R&D programs. Fermilab's accelerator complex delivers high-intensity neutrino beams and provides optimal beam for a broad range of new and existing experiments, including the Deep Underground Neutrino Experiment, Muon g-2 and Mu2e. Fermilab's

  2. Simulation of PEP-II Accelerator Backgrounds Using TURTLE

    SciTech Connect (OSTI)

    Barlow, R.J.; Fieguth, T.; Kozanecki, W.; Majewski, S.A.; Roudeau, P.; Stocchi, A.; /Orsay, LAL

    2006-02-15

    We present studies of accelerator-induced backgrounds in the BaBar detector at the SLAC B-Factory, carried out using LPTURTLE, a modified version of the DECAY TURTLE simulation package. Lost-particle backgrounds in PEP-II are dominated by a combination of beam-gas bremstrahlung, beam-gas Coulomb scattering, radiative-Bhabha events and beam-beam blow-up. The radiation damage and detector occupancy caused by the associated electromagnetic shower debris can limit the usable luminosity. In order to understand and mitigate such backgrounds, we have performed a full program of beam-gas and luminosity-background simulations, that include the effects of the detector solenoidal field, detailed modeling of limiting apertures in both collider rings, and optimization of the betatron collimation scheme in the presence of large transverse tails.

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

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

    Lab, ODU team up for center Jefferson Lab, ODU team up for center Michael Schwartz Inside Business, October 6-12, 2008 It pays to have a world renowned subatomic particle accelerator in your backyard. Old Dominion University, in collaboration with the U.S. Department of Energy's Thomas Jefferson National Accelerator Facility, better known as Jefferson Lab in Newport News, announced last week the creation of the Center for Accelerator Science, an academic entity that puts ODU in the same company

  4. Detecting Partial Energy Modulation in a Dielectric Laser Accelerator - Oral Presentation

    SciTech Connect (OSTI)

    Lukaczyk, Louis

    2015-08-24

    The Dielectric Laser Acceleration group at SLAC uses micro-fabricated dielectric grating structures and conventional infrared lasers to accelerator electrons. These structures have been estimated to produce an accelerating gradient up to 2 orders of magnitude greater than that produced by conventional RF accelerators. The success of the experiment depends on both the laser damage threshold of the structure and the timing overlap of femtosecond duration laser pulses with the electron bunch. In recent dielectric laser acceleration experiments, the laser pulse was shorter both temporally and spatially than the electron bunch. As a result, the laser is theorized to have interacted with only a small portion of the electron bunch. The detection of this phenomenon, referred to as partial population modulation, required a new approach to the data analysis of the electron energy spectra. A fitting function was designed to separate the accelerated electron population from the unaccelerated electron population. The approach was unsuccessful in detecting acceleration in the partial population modulation data. However, the fitting functions provide an excellent figure of merit for previous data known to contain signatures of acceleration.

  5. Explosives Center

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

    Explosives Center Explosives Center at Los Alamos National Laboratory A world leader in energetic materials research, development and applications, the Explosives Center's unique capabilities enable a dynamic, flexible response to address multiple evolving mission needs. explosives experiment Comprehensive energetic materials development, characterization and testing are key strengths at Los Alamos National Laboratory. An experimental explosive is shown igniting during small-scale impact

  6. Induction linear accelerator technology for SDIO applications

    SciTech Connect (OSTI)

    Birx, D.; Reginato, L.; Rogers, D.; Trimble, D.

    1986-11-01

    The research effort reported concentrated primarily on three major activities. The first was aimed at improvements in the accelerator drive system of an induction linac to meet the high repetition rate requirements of SDI applications. The second activity centered on a redesign of the accelerator cells to eliminate the beam breakup instabilities, resulting in optimized beam transport. The third activity sought to improve the source of electrons to achieve a higher quality beam to satisfy the requirement of the free electron laser. (LEW)

  7. Laser driven ion accelerator

    DOE Patents [OSTI]

    Tajima, Toshiki

    2006-04-18

    A system and method of accelerating ions in an accelerator to optimize the energy produced by a light source. Several parameters may be controlled in constructing a target used in the accelerator system to adjust performance of the accelerator system. These parameters include the material, thickness, geometry and surface of the target.

  8. Building a Tabletop Accelerator

    SciTech Connect (OSTI)

    Leemans, Wim

    2015-05-06

    Berkeley Lab physicist Wim Leemans discusses his research on developing a tabletop-size particle accelerator.

  9. Laser driven ion accelerator

    DOE Patents [OSTI]

    Tajima, Toshiki

    2005-06-14

    A system and method of accelerating ions in an accelerator to optimize the energy produced by a light source. Several parameters may be controlled in constructing a target used in the accelerator system to adjust performance of the accelerator system. These parameters include the material, thickness, geometry and surface of the target.

  10. Accelerator on a Chip

    Broader source: Energy.gov [DOE]

    Scientists at the National Labs are attempting to build the world’s smallest particle accelerator.