National Library of Energy BETA

Sample records for lab laser accelerator

  1. BELLA: The Berkeley Lab Laser Accelerator

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

    BELLA: The Berkeley Lab Laser Accelerator Community Berkeley Global Campus Environmental ... Project Description BELLA, the Berkeley Laboratory Laser Accelerator created an ...

  2. EA-1655: Berkeley Lab Laser Accelerator (BELLA) Laser Acquisition, Installation and Use for Research and Development

    Broader source: Energy.gov [DOE]

    Berkeley Lab Laser Accelerator (BELLA) Laser Acquisition, Installation and Use for Research and Development

  3. About Accelerators | Jefferson Lab

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

    About Accelerators Jefferson Lab is home to two superconducting radiofrequency accelerators: the Continuous Electron Beam Accelerator Facility and the Free-Electron Laser. The CEBAF accelerator is a unique accelerator used to conduct investigations in the field of nuclear physics. It provides high-current, medium-energy electron beams concurrently to three experimental halls for the study of quarks and gluons, protons and neutrons and the nucleus of the atom. The Jefferson Lab Free-Electron

  4. The BErkeley Lab Laser Accelerator (BELLA): A 10 GeV Laser Plasma Accelerator

    SciTech Connect (OSTI)

    Leemans, W.P.; Duarte, R.; Esarey, E.; Fournier, S.; Geddes, C.G.R.; Lockhart, D.; Schroeder, C.B.; Toth, C.; Vay, J.-L.; Zimmermann, S.

    2010-06-01

    An overview is presented of the design of a 10 GeV laser plasma accelerator (LPA) that will be driven by a PW-class laser system and of the BELLA Project, which has as its primary goal to build and install the required Ti:sapphire laser system for the acceleration experiments. The basic design of the 10 GeV stage aims at operation in the quasi-linear regime, where the laser excited wakes are largely sinusoidal and offer the possibility of accelerating both electrons and positrons. Simulations show that a 10 GeV electron beam can be generated in a meter scale plasma channel guided LPA operating at a density of about 1017 cm-3 and powered by laser pulses containing 30-40 J of energy in a 50- 200 fs duration pulse, focused to a spotsize of 50-100 micron. The lay-out of the facility and laser system will be presented as well as the progress on building the facility.

  5. #LabChat: Particle Accelerators, Lasers and Discovery Science, May 17 at

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

    1pm EST | Department of Energy Particle Accelerators, Lasers and Discovery Science, May 17 at 1pm EST #LabChat: Particle Accelerators, Lasers and Discovery Science, May 17 at 1pm EST May 15, 2012 - 2:03pm Addthis SLAC’s linac accelerates very short pulses of electrons to 99.9999999 percent the speed of light through a slalom that causes the electrons to emit X-rays, which become synchronized as they interact with the electron pulses and create the world’s brightest X-ray laser

  6. Accelerator Science | Jefferson Lab

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

    Accelerator Science Jefferson Lab is recognized as a world leader in accelerator science. This expertise comes from the planning, building, maintaining and operating of the Continuous Electron Beam Accelerator Facility (CEBAF) - the lab's particle accelerator. CEBAF is based on superconducting radiofrequency (SRF) technology. It produces a stream of charged electrons that scientists use to probe the nucleus of the atom. CEBAF was the first large-scale application of SRF technology in the world,

  7. Berkeley Lab Particle Accelerator Sets World Record

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

    Lab Particle Accelerator Sets World Record Berkeley Lab Particle Accelerator Sets World Record Simulations at NERSC Help Validate Experimental Laser-Plasma Design December 9, 2014 Contact: Kate Greene, kgreene@lbl.gov, 510-486-4404 particleaccelerator A 9 cm-long capillary discharge waveguide used in BELLA experiments to generate multi-GeV electron beams. The plasma plume has been made more prominent with the use of HDR photography. Image: Roy Kaltschmidt Using one of the most powerful lasers in

  8. Jefferson Lab Laser Twinkles in Rare Color | Jefferson Lab

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

    Laser Twinkles in Rare Color Jefferson Lab Laser Twinkles in Rare Color NEWPORT NEWS, VA, Dec. 21 - December is a time for twinkling lights, and scientists at the Department of Energy's Thomas Jefferson National Accelerator Facility are delivering. They've just produced a long-sought, rare color of laser light 100 times brighter than that generated anywhere else. The light was produced by Jefferson Lab's Free-Electron Laser facility. The laser delivered vacuum ultraviolet light in the form of 10

  9. 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

  10. Lab announces Venture Acceleration

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

    Venture Acceleration Fund recipients August 11, 2009 Los Alamos, New Mexico, August 11, 2009 - Los Alamos National Laboratory has selected Adaptive Radio Technologies, Los Alamos Visualization Associates, Mesa Tech International Inc., and ThermaSun Inc. as recipients of awards from the Los Alamos National Security, LLC Venture Acceleration Fund. The Laboratory's Venture Acceleration Fund provides investments of up to $100,000 to regional entrepreneurs, companies, investors, or strategic partners

  11. Lab announces Venture Acceleration

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

    Venture Acceleration Fund recipients August 11, 2009 Los Alamos, New Mexico, August 11, 2009 ... of Taos, will continue development of a solar thermal heating prototype that uses heat ...

  12. Free-Electron Laser | Jefferson Lab

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

    Free-Electron Laser Jefferson Lab's Free-Electron Laser is the world's highest-power tunable infrared laser and was developed using the lab's expertise in superconducting ...

  13. Lab seeks venture acceleration initiative partners

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

    Venture acceleration initiative partners Lab seeks Venture Acceleration initiative partners The Venture Acceleration Initiative is a pilot program to strategically spin off from the Lab start-up companies with emphasis on establishing new businesses in northern New Mexico. June 9, 2008 Los Alamos National Laboratory sits on top of a once-remote mesa in northern New Mexico with the Jemez mountains as a backdrop to research and innovation covering multi-disciplines from bioscience, sustainable

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

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

    Jefferson Lab's superconducting electron-accelerating technology offers two commanding cost advantages for FELs: the laser can stay on 100% of the time instead of only 1% or 2%, ...

  15. Jefferson Lab's upgraded Free-Electron Laser produces first ligh |

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

    Jefferson Lab upgraded Free-Electron Laser produces first ligh Jefferson Lab's upgraded Free-Electron Laser produces first light June 18, 2003 Researchers at the U.S. Department of Energy's Thomas Jefferson National Accelerator Facility have produced first light from their 10-kilowatt Free-Electron Laser (FEL). Entrance to Free-Electron Laser building The Free-Electron Laser (FEL) facility at Jefferson Lab. Researchers have produced first light from the upgraded 10-kW FEL, located on the

  16. 'Erratic' Lasers Pave Way for Tabletop Accelerators

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

    Lasers Pave Way for Tabletop Accelerators 'Erratic' Lasers Pave Way for Tabletop Accelerators Simulations at NERSC help researchers simplify design of mini particle accelerators June 9, 2014 Kate Green, KGreene@lbl.gov, 510-486-4404 laserplasmaaccelerator 3D map of the longitudinal wakefield generated by the incoherent combination of 208 low-energy laser beamlets. In the region behind the driver, the wakefield is regular. Image: Carlo Benedetti, Berkeley Lab Making a tabletop particle

  17. 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.

  18. Lab announces Venture Acceleration Fund recipients

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

    Venture Acceleration Fund recipients Lab announces Venture Acceleration Fund recipients Adaptive Radio Technologies, Los Alamos Visualization Associates, Mesa Tech International Inc., and ThermaSun Inc. selected as recipients of awards. August 11, 2009 Los Alamos National Laboratory sits on top of a once-remote mesa in northern New Mexico with the Jemez mountains as a backdrop to research and innovation covering multi-disciplines from bioscience, sustainable energy sources, to plasma physics and

  19. Lab seeks ideas for Venture Acceleration Fund

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

    Venture Acceleration Fund ideas Lab seeks ideas for Venture Acceleration Fund Projects selected will support LANL's core missions and provide a significant opportunity for new company formation or growth in New Mexico. April 20, 2009 Los Alamos National Laboratory sits on top of a once-remote mesa in northern New Mexico with the Jemez mountains as a backdrop to research and innovation covering multi-disciplines from bioscience, sustainable energy sources, to plasma physics and new materials. Los

  20. Lab seeks ideas for venture acceleration fund

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

    Venture acceleration fund Lab seeks ideas for Venture Acceleration Fund The fund will provide investments of up to $100,000 to facilitate projects with regional entrepreneurs, companies, investors, or strategic partners. July 9, 2008 Los Alamos National Laboratory sits on top of a once-remote mesa in northern New Mexico with the Jemez mountains as a backdrop to research and innovation covering multi-disciplines from bioscience, sustainable energy sources, to plasma physics and new materials. Los

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

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

    Venture | Jefferson Lab Free-Electron Laser Joins With Others in New Research Venture Jefferson Lab's Free-Electron Laser Joins With Others in New Research Venture NEWPORT NEWS, VA, April 29, 2009 - The U.S. Department of Energy's Thomas Jefferson National Accelerator Facility will participate in a $777 million federal effort to accelerate scientific breakthroughs. Jefferson Lab will be among nine universities and six DOE labs collaborating with the Carnegie Geophysical Institution of

  2. Energy Department Announces New Lab Program to Accelerate Commercialization

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

    of Clean Energy Technologies | Department of Energy Lab Program to Accelerate Commercialization of Clean Energy Technologies Energy Department Announces New Lab Program to Accelerate Commercialization of Clean Energy Technologies October 29, 2014 - 2:30pm Addthis News Media Contact 202-586-4940 Energy Department Announces New Lab Program to Accelerate Commercialization of Clean Energy Technologies Lab-Corps Will Help Move Innovative Technologies from National Labs into the Marketplace

  3. Carrigan, Jr., Richard A. [Fermi National Accelerator Lab. (FNAL...

    Office of Scientific and Technical Information (OSTI)

    Accelerator Lab. (FNAL), Batavia, IL (United States) 43 PARTICLE ACCELERATORS; BEAM OPTICS; CHANNELING; ATTENUATION; BEAM EXTRACTION; BENDING; CRYSTALS; MESON BEAMS; BEAMS;...

  4. Governor to Join Jefferson Lab in Celebrating Completion of Accelerator

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

    Upgrade Construction | Jefferson Lab Governor to Join Jefferson Lab in Celebrating Completion of Accelerator Upgrade Construction Governor to Join Jefferson Lab in Celebrating Completion of Accelerator Upgrade Construction CEBAF Race Track This aerial photo shows the outline of the racetrack-shaped CEBAF accelerator at Jefferson Lab in Newport News, Va. NEWPORT NEWS, VA, Sept. 25, 2014 - The Governor of Virginia, Terry McAuliffe, will be the guest speaker at the U.S. Department of Energy's

  5. Jefferson Lab accelerator upgrade completed: Initial operations set to

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

    begin while experimental equipment upgrades continue | Jefferson Lab accelerator upgrade completed: Initial operations set to begin while experimental equipment upgrades continue Jefferson Lab accelerator upgrade completed: Initial operations set to begin while experimental equipment upgrades continue areial Aerial of Jefferson Lab NEWPORT NEWS, VA, August 12, 2014 - The Department of Energy's Thomas Jefferson National Accelerator Facility ("Jefferson Lab") has just received formal

  6. Jefferson Lab Fall Lecture: Exploring Our World With Particle Accelerators

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

    | Jefferson Lab Fall Lecture: Exploring Our World With Particle Accelerators Jefferson Lab Fall Lecture: Exploring Our World With Particle Accelerators NEWPORT NEWS, Va., Nov. 9, 2010 - Jefferson Lab's 2010 Fall Science Lecture Series concludes on Tuesday, Nov. 23, with James E. Brau, University of Oregon, presenting "The Mysterious Universe: Exploring Our World with Particle Accelerators." The universe is dark and mysterious, more so than even Einstein imagined, Brau says. While

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

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

    Jefferson Lab Builds First Single Crystal Single Cell Accelerating Cavity Single Cell Cavity This single cell cavity was made from a single crystal of niobium. Made in the same shape as the low-loss design proposed as an improvement to the baseline for the International Linear Collider (ILC), this cavity performs much better than the ILC design goal. Jefferson Lab Builds First Single Crystal Single Cell Accelerating Cavity May 18, 2005 Jefferson Lab's Institute for Superconducting

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

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

    Jefferson Lab Builds First Single Crystal Single Cell Accelerating Cavity Single Cell Cavity This single cell cavity was made from a single crystal of niobium. Made in the same shape as the low-loss design proposed as an improvement to the baseline for the International Linear Collider (ILC), this cavity performs much better than the ILC design goal. Jefferson Lab Builds First Single Crystal Single Cell Accelerating Cavity Jefferson Lab's Institute for Superconducting Radiofrequency Science

  9. Berkeley Lab Particle Accelerator Sets World Record

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

    Traditional particle accelerators, like the Large Hadron Collider at CERN, which is 17 miles ... Particle Accelerators NERSC Resources Used: Edison, Hopper DOE Program ...

  10. Lab announces selection of partner for venture acceleration initiative

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

    Venture acceleration initiative partner Lab announces selection of partner for Venture Acceleration initiative The initiative is a pilot program aimed at strategically spinning off technology-based companies from the Lab. September 2, 2008 Los Alamos National Laboratory sits on top of a once-remote mesa in northern New Mexico with the Jemez mountains as a backdrop to research and innovation covering multi-disciplines from bioscience, sustainable energy sources, to plasma physics and new

  11. Lab Breakthrough: Fermilab Accelerator Technology | Department of Energy

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

    Fermilab Accelerator Technology Lab Breakthrough: Fermilab Accelerator Technology May 14, 2012 - 10:51am Addthis At Fermilab, scientists are collaborating with other laboratories and industry to optimize the manufacturing processes for a new type of powerful accelerator that uses superconducting niobium cavities. Michael Hess Michael Hess Former Digital Communications Specialist, Office of Public Affairs Where are these 30,000 particle accelerators? Most of them in medicine and manufacturing

  12. Jefferson Lab accelerator upgrade completed: Initial operations...

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

    visiting scientists may continue commissioning the accelerator and dependent upon funding availability, some limited early physics running may be feasible as the capabilities of...

  13. 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.

  14. 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.

  15. Lab-Corps Program Helping to Accelerate Commercialization of Clean Energy

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

    Technologies from our National Labs | Department of Energy Lab-Corps Program Helping to Accelerate Commercialization of Clean Energy Technologies from our National Labs Lab-Corps Program Helping to Accelerate Commercialization of Clean Energy Technologies from our National Labs July 30, 2015 - 1:00pm Addthis The Energy Department's Lab-Corps pilot program is a national network that aims to unleash national lab researchers to successfully transition their discoveries into high-impact

  16. Jefferson Lab: Laser gun to eventually shoot down missiles (Daily...

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

    Jefferson Lab: Laser gun to eventually shoot down missiles (Daily Press) External Link: http:articles.dailypress.com2011-02-21newsdp-nws-jefferson-lab-201102211j... By ...

  17. Lab announces selection of Venture Acceleration Fund recipients

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

    Venture Acceleration Fund recipients Lab announces selection of Venture Acceleration Fund recipients Retriever Technology, Elemetric Instruments, Star Cryoelectronics, and Veezyon are recipients of awards. January 7, 2009 Los Alamos National Laboratory sits on top of a once-remote mesa in northern New Mexico with the Jemez mountains as a backdrop to research and innovation covering multi-disciplines from bioscience, sustainable energy sources, to plasma physics and new materials. Los Alamos

  18. Policymakers | Jefferson Lab

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

    Policymakers Thomas Jefferson National Accelerator Facility (Jefferson Lab) is one of 17 national laboratories funded by the U.S. Department of Energy. The lab also receives support from the City of Newport News and the Commonwealth of Virginia. The lab's primary mission is to conduct basic research of the atom's nucleus using the lab's unique particle accelerator, the Continuous Electron Beam Accelerator Facility. Jefferson Lab also conducts applied research using its Free-Electron Laser, which

  19. Lab-Corps Program Helping to Accelerate Commercialization of...

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

    ... Six national labs are participating in the Lab-Corp pilot: National Renewable Energy Laboratory (NREL) - NodeLead Lab Idaho National Laboratory (INL) - Site Lab Lawrence Berkeley ...

  20. Jefferson Lab Virtual Tour

    ScienceCinema (OSTI)

    None

    2014-05-22

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

  1. Jefferson Lab Virtual Tour

    SciTech Connect (OSTI)

    None

    2013-07-13

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

  2. Jefferson Lab Accelerator Operations Training and Development Program

    SciTech Connect (OSTI)

    Michael A. Epps

    2008-01-23

    The mission of the Jefferson Lab Operations Group is to provide safe and efficient delivery of high quality electron beam for Jefferson Laboratory's nuclear and accelerator physics programs. The Operations staff must be able to setup, transport, maintain, and troubleshoot beam to all three experimental halls in a safe, efficient, and expeditious manner. Due to the nature of shift work, high employee turnover is always as issue. This creates a unique situation where highly trained staff members must quickly be produced and maintained in order to meet the needs of the Laboratory. Some methods used to address this problem will be presented here.

  3. Lab-Corps Pilot Accelerates Private-Sector Adoption of Game-Changing...

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

    Teams were initially introduced to private sector and consumer interests - like ... Lab-Corps Pilot Accelerates Private-Sector Adoption of Game-Changing ...

  4. Jefferson Lab Gears up for 'Accelerating Discovery' Open House on May 17 |

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

    Jefferson Lab Gears up for 'Accelerating Discovery' Open House on May 17 This slide show includes photos from the Jefferson Lab Open House held in May 2012. Between 7,000 and 8,000 visitors attended. They were able to see many of the unique research facilities and learn about the leading-edge projects underway at the lab, as well as participate in a variety of science education activities and catch the ever-popular Liquid Nitrogen Demonstration. Jefferson Lab Gears up for 'Accelerating

  5. Laser diagnostics | Princeton Plasma Physics Lab

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

    Laser diagnostics Subscribe to RSS - Laser diagnostics The Multi-Point Thomson Scattering (MPTS) diagnostic system has been providing time dependent Te and ne profile measurements on NSTX for ten years. COLLOQUIUM: Controlling the Production and Performance of Materials at the Mesoscale: The Matter-Radiation Interactions in Extremes (MaRIE) Capability The Matter-Radiation Interactions in Extremes (MaRIE) project will provide capability that will address the control of performance and production

  6. Core of First Section of New Accelerator Rolled Out | Jefferson Lab

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

    Core of First Section of New Accelerator Rolled Out Core of First Section of New Accelerator Rolled Out Moving Forward - New components to be added to Jefferson Lab's CEBAF accelerator as part of the 12 GeV Upgrade have been manufactured, encased and rolled out for further assembly. This "string" of components will become the heart of a cryomodule, which will be added to the lab's particle accelerator in 2012. Core of First Section of New Accelerator Rolled Out The first of the new

  7. Microwave accelerator E-beam pumped laser

    DOE Patents [OSTI]

    Brau, Charles A.; Stein, William E.; Rockwood, Stephen D.

    1980-01-01

    A device and method for pumping gaseous lasers by means of a microwave accelerator. The microwave accelerator produces a relativistic electron beam which is applied along the longitudinal axis of the laser through an electron beam window. The incident points of the electron beam on the electron beam window are varied by deflection coils to enhance the cooling characteristics of the foil. A thyratron is used to reliably modulate the microwave accelerator to produce electron beam pulses which excite the laser medium to produce laser pulse repetition frequencies not previously obtainable. An aerodynamic window is also disclosed which eliminates foil heating problems, as well as a magnetic bottle for reducing laser cavity length and pressures while maintaining efficient energy deposition.

  8. 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.

  9. Jefferson Lab Accelerator Delivers Its First 12 GeV Electrons | Jefferson

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

    Lab Accelerator Delivers Its First 12 GeV Electrons On December 14, full-energy 12 GeV electron beam was provided for the first time, to the Experimental Hall D complex, located in the upper, left corner of this aerial photo of the Continuous Electron Beam Accelerator Facility. Hall D is the new experimental research facility - added to CEBAF as part of the 12 GeV Upgrade project. Beam was also delivered to Hall A (dome in the lower left). Jefferson Lab Accelerator Delivers Its First 12 GeV

  10. Laser driven compact ion accelerator

    DOE Patents [OSTI]

    Tajima, Toshiki

    2005-03-15

    A laser driven compact ion source including a light source that produces an energy pulse, a light source guide that guides the energy pulse to a target and produces an ion beam. The ion beam is transported to a desired destination.

  11. 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 ...

  12. Jefferson Lab Builds First Single Crystal Single Cell Accelerating...

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

    ... After a brief, low-temperature bake, the cavity achieved an accelerating gradient of 45 MVm, ... surfaces after only chemical surface treatment, better mechanical performance and ...

  13. Lab announces selection of partner for venture acceleration initiative

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

    venture capital fund that invests in seed-stage, high-growth ventures in New Mexico. "The Venture Acceleration Initiative is an innovative program in a comprehensive...

  14. PRECISE CHARGE MEASUREMENT FOR LASER PLASMA ACCELERATORS

    SciTech Connect (OSTI)

    Nakamura, Kei; Gonsalves, Anthony; Lin, Chen; Sokollik, Thomas; Shiraishi, Satomi; Tilborg, Jeroen van; Osterhoff, Jens; Donahue, Rich; Rodgers, David; Smith, Alan; Byrne, Warren; Leemans, Wim

    2011-07-19

    Cross-calibrations of charge diagnostics are conducted to verify their validity for measuring electron beams produced by laser plasma accelerators (LPAs). Employed diagnostics are a scintillating screen, activation based measurement, and integrating current transformer. The diagnostics agreed within {+-}8 %, showing that they can provide accurate charge measurements for LPAs provided they are used properly.

  15. Jefferson Lab's Free-Electron Laser explores promise of carbon nanotubes |

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

    Jefferson Lab Free-Electron Laser explores promise of carbon nanotubes Webs of nanotubes on collector plates Webs of nanotubes form on collector plates during the collaboration's FEL experiment (image not actual size). Jefferson Lab's Free-Electron Laser explores promise of carbon nanotubes By James Schultz January 27, 2003 Jefferson Lab's Free-Electron Laser used to explore the fundamental science of how and why nanotubes form, paying close attention to the atomic and molecular details

  16. Observation of laser multiple filamentation process and multiple electron beams acceleration in a laser wakefield accelerator

    SciTech Connect (OSTI)

    Li, Wentao; Liu, Jiansheng; Wang, Wentao; Chen, Qiang; Zhang, Hui; Tian, Ye; Zhang, Zhijun; Qi, Rong; Wang, Cheng; Leng, Yuxin; Li, Ruxin; Xu, Zhizhan

    2013-11-15

    The multiple filaments formation process in the laser wakefield accelerator (LWFA) was observed by imaging the transmitted laser beam after propagating in the plasma of different density. During propagation, the laser first self-focused into a single filament. After that, it began to defocus with energy spreading in the transverse direction. Two filaments then formed from it and began to propagate independently, moving away from each other. We have also demonstrated that the laser multiple filamentation would lead to the multiple electron beams acceleration in the LWFA via ionization-induced injection scheme. Besides, its influences on the accelerated electron beams were also analyzed both in the single-stage LWFA and cascaded LWFA.

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

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

    Jefferson Lab Jefferson Lab: Laser gun to eventually shoot down missiles (Daily Press) External Link: http://articles.dailypress.com/2011-02-21/news/dp-nws-jefferson-lab-20110221_1_j... By jlab_admin on Mon, 2011-02-21

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

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

    Free-Electron Laser Joins With Others in New Research Venture Jefferson Lab's Free-Electron Laser Joins With Others in New Research Venture NEWPORT NEWS, VA, April 29, 2009 - The ...

  19. Diagnostics for advanced laser acceleration experiments

    SciTech Connect (OSTI)

    Misuri, Alessio

    2002-06-01

    The first proposal for plasma based accelerators was suggested by 1979 by Tajima and Dawson. Since then there has been a tremendous progress both theoretically and experimentally. The theoretical progress is particularly due to the growing interest in the subject and to the development of more accurate numerical codes for the plasma simulations (especially particle-in-cell codes). The experimental progress follows from the development of multi-terawatt laser systems based on the chirped-pulse amplification technique. These efforts have produced results in several experiments world-wide, with the detection of accelerated electrons of tens of MeV. The peculiarity of these advanced accelerators is their ability to sustain extremely large acceleration gradients. In the conventional radio frequency linear accelerators (RF linacs) the acceleration gradients are limited roughly to 100 MV/m; this is partially due to breakdown which occurs on the walls of the structure. The electrical breakdown is originated by the emission of the electrons from the walls of the cavity. The electrons cause an avalanche breakdown when they reach other metal parts of the RF linacs structure.

  20. An Inverse Free-Electron-Laser accelerator

    SciTech Connect (OSTI)

    Fisher, A.S.; Gallardo, J.C.; van Steenbergen, A.; Ulc, S.; Woodle, M.; Sandweiss, J.; Fang, Jyan-Min

    1993-08-01

    Recent work at BNL on electron acceleration using the Inverse Free-Electron Laser (IFEL) has considered a low-energy, high-gradient, multi-stage linear accelerator. Experiments are planned at BNL`s Accelerator Test Facility using its 50-MeV linac and 100-GW CO{sub 2} laser. We have built and tested a fast-excitation wiggler magnet with constant field, tapered period, and overall length of 47 cm. Vanadium-Permendur ferromagnetic laminations are stacked in alternation with copper, eddy-current-induced, field reflectors to achieve a 1.4-T peak field with a 4-mm gap and a typical period of 3 cm. The laser beam will pass through the wiggler in a low-loss, dielectric-coated stainless-steel, rectangular waveguide. The attenuation and transverse mode has been measured in waveguide sections of various lengths, with and without the dielectric. Results of 1-D and 3-D IFEL simulations, including wiggler errors, will be presented for several cases: the initial, single-module experiment with {Delta}E = 39 MeV, a four-module design giving {Delta}E = 100 MeV in a total length of 2 m, and an eight-module IFEL with {Delta}E = 210 MeV.

  1. Laser-driven ion acceleration with hollow laser beams

    SciTech Connect (OSTI)

    Brabetz, C. Kester, O.; Busold, S.; Bagnoud, V.; Cowan, T.; Deppert, O.; Jahn, D.; Roth, M.; Schumacher, D.

    2015-01-15

    The laser-driven acceleration of protons from thin foils irradiated by hollow high-intensity laser beams in the regime of target normal sheath acceleration (TNSA) is reported for the first time. The use of hollow beams aims at reducing the initial emission solid angle of the TNSA source, due to a flattening of the electron sheath at the target rear side. The experiments were conducted at the PHELIX laser facility at the GSI Helmholtzzentrum für Schwerionenforschung GmbH with laser intensities in the range from 10{sup 18} W cm{sup −2} to 10{sup 20} W cm{sup −2}. We observed an average reduction of the half opening angle by (3.07±0.42)° or (13.2±2.0)% when the targets have a thickness between 12 μm and 14 μm. In addition, the highest proton energies were achieved with the hollow laser beam in comparison to the typical Gaussian focal spot.

  2. Electromagnetic Acceleration Characteristics of Laser-Electric Hybrid Thrusters

    SciTech Connect (OSTI)

    Sasaki, Koki; Takeda, Akihito; Horisawa, Hideyuki; Kimura, Itsuro

    2006-05-02

    A fundamental study on a laser-electric hybrid thruster was conducted, in which laser-induced plasmas were generated through laser beam irradiation on to a solid target and accelerated by electrical means instead of direct acceleration using only a laser beam. As two typical cases of the hybrid propulsion systems, a feasibility study on electrostatic acceleration mode and electromagnetic acceleration mode of the laser ablation plasma were conducted including thrust performance tests with a torsion-balance, ion current measurements, and ICCD camera observations. It was confirmed that the thrust performances could be improved with electric energy inputs.

  3. Chirped pulse inverse free-electron laser vacuum accelerator

    DOE Patents [OSTI]

    Hartemann, Frederic V.; Baldis, Hector A.; Landahl, Eric C.

    2002-01-01

    A chirped pulse inverse free-electron laser (IFEL) vacuum accelerator for high gradient laser acceleration in vacuum. By the use of an ultrashort (femtosecond), ultrahigh intensity chirped laser pulse both the IFEL interaction bandwidth and accelerating gradient are increased, thus yielding large gains in a compact system. In addition, the IFEL resonance condition can be maintained throughout the interaction region by using a chirped drive laser wave. In addition, diffraction can be alleviated by taking advantage of the laser optical bandwidth with negative dispersion focusing optics to produce a chromatic line focus. The combination of these features results in a compact, efficient vacuum laser accelerator which finds many applications including high energy physics, compact table-top laser accelerator for medical imaging and therapy, material science, and basic physics.

  4. Laser-driven electron acceleration in an inhomogeneous plasma channel

    SciTech Connect (OSTI)

    Zhang, Rong; Cheng, Li-Hong; Xue, Ju-Kui

    2015-12-15

    We study the laser-driven electron acceleration in a transversely inhomogeneous plasma channel. We find that, in inhomogeneous plasma channel, the developing of instability for electron acceleration and the electron energy gain can be controlled by adjusting the laser polarization angle and inhomogeneity of plasma channel. That is, we can short the accelerating length and enhance the energy gain in inhomogeneous plasma channel by adjusting the laser polarization angle and inhomogeneity of the plasma channel.

  5. Polarization measurement of laser-accelerated protons (Journal...

    Office of Scientific and Technical Information (OSTI)

    Citation Details In-Document Search Title: Polarization measurement of laser-accelerated protons We report on the ... OSTI Identifier: 22252078 Resource Type: Journal Article ...

  6. Compact X-ray Free Electron Laser from a Laser-plasma Accelerator using a

    Office of Scientific and Technical Information (OSTI)

    Transverse Gradient Undulator (Journal Article) | SciTech Connect Compact X-ray Free Electron Laser from a Laser-plasma Accelerator using a Transverse Gradient Undulator Citation Details In-Document Search Title: Compact X-ray Free Electron Laser from a Laser-plasma Accelerator using a Transverse Gradient Undulator Compact laser-plasma accelerators can produce high energy electron beams with low emittance, high peak current but a rather large energy spread. The large energy spread hinders

  7. Lab

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

    Flexible hydropower: boosting energy December 16, 2014 New hydroelectric resource for Northern New Mexico supplies clean energy to homes, businesses and the Lab We know a lot of power is required at the Lab to support our national security science, and we're committed to finding ways to incorporate more renewable energy and reduce our carbon footprint. In addition to the collaborative Smart Grid Technology Test Bed, Los Alamos and partners helped develop other ways to generate renewable power to

  8. Low Energy Recirculator Facility (LERF) | Jefferson Lab

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

    Low Energy Recirculator Facility (LERF) Jefferson Lab's Low Energy Recirculator Facility, formerly known as the Free-Electron Laser, was developed using the lab's expertise in superconducting radiofrequency (SRF) accelerators. As an FEL, the facility was the world's highest-power tunable infrared laser and also provided ultraviolet laser light, including vacuum ultraviolet light, and Terahertz light. Currently, the lab is using the term Low Energy Recirculator Facility, or LERF, to refer to this

  9. 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.

  10. Free-Electron Laser Targets Fat | Jefferson Lab

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

    Free-Electron Laser Targets Fat Free-Electron Laser Targets Fat April 10, 2006 Free-Electron Laser Scientists Rox Anderson, right, and Free-Electron Laser Scientist Steve Benson, ...

  11. 2010 | Jefferson Lab

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

    Dec 2010 Tue, 2010-12-21 13:00 Jefferson Lab Laser Twinkles in Rare Color Tue, 2010-12-14 13:00 NSC Technologies Joins DOE Mentor-Protégé Program With Jefferson Lab Nov 2010 Tue, 2010-11-09 13:00 Jefferson Lab Fall Lecture: Exploring Our World With Particle Accelerators Oct 2010 Thu, 2010-10-14 14:00 JLab Cluster Tops 100 Teraflops Sep 2010 Wed, 2010-09-22 14:00 Fall Lectures Feature Life of Einstein; Exploring Our World With Particle Accelerators Aug 2010 Tue,

  12. Laser wakefield accelerator based light sources: potential applications and requirements

    SciTech Connect (OSTI)

    Albert, F; Thomas, A G; Mangles, S P; Banerjee, S; Corde, S; Flacco, A; Litos, M; Neely, D; Viera, J; Najmudin, Z; Bingham, R; Joshi, C; Katsouleas, T

    2015-01-15

    In this article we review the prospects of laser wakefield accelerators as next generation light sources for applications. This work arose as a result of discussions held at the 2013 Laser Plasma Accelerators Workshop. X-ray phase contrast imaging, X-ray absorption spectroscopy, and nuclear resonance fluorescence are highlighted as potential applications for laser-plasma based light sources. We discuss ongoing and future eff orts to improve the properties of radiation from plasma betatron emission and Compton scattering using laser wakefi eld accelerators for these specifi c applications.

  13. Acceleration Mechanism Of Pulsed Laser-Electromagnetic Hybrid Thruster

    SciTech Connect (OSTI)

    Horisawa, Hideyuki; Mashima, Yuki; Yamada, Osamu

    2011-11-10

    A fundamental study of a newly developed rectangular pulsed laser-electromagnetic hybrid thruster was conducted. Laser-ablation plasma in the thruster was induced through laser beam irradiation onto a solid target and accelerated by electrical means instead of direct acceleration only by using a laser beam. The performance of the thrusters was evaluated by measuring the ablated mass per pulse and impulse bit. As results, significantly high specific impulses up to 7,200 s were obtained at charge energies of 8.6 J. Moreover, from the Faraday cup measurement, it was confirmed that the speed of ions was accelerated with addition of electric energy.

  14. JEFFERSON LAB RESOURCES | Jefferson Lab

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

    JEFFERSON LAB RESOURCES Jefferson Lab's accelerator is operated from the Machine Control Center. The MCC features a full-wall display that allows operators to monitor every function of the accelerator and to make adjustments as needed. Jefferson Lab's accelerator is operated from the Machine Control Center. The MCC features a full-wall display that allows operators to monitor every function of the accelerator and to make adjustments as needed. Founded in 1985, Jefferson Lab is a

  15. Operational plasma density and laser parameters for future colliders based on laser-plasma accelerators

    SciTech Connect (OSTI)

    Schroeder, C. B.; Esarey, E.; Leemans, W. P.

    2012-12-21

    The operational plasma density and laser parameters for future colliders based on laser-plasma accelerators are discussed. Beamstrahlung limits the charge per bunch at low plasma densities. Reduced laser intensity is examined to improve accelerator efficiency in the beamstrahlung-limited regime.

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

    SciTech Connect (OSTI)

    Ghoshal, Probir K.; Biallas, George H.; Fair, Ruben J.; Rajput-Ghoshal, Renuka; Schneider, William J.; Legg, Robert A.; Kashy, David H.; Hogan, John P.; Wiseman, Mark A.; Luongo, Cesar; Ballard, Joshua T.; Young, Glenn R.; Elouadrhiri, Latifa; Rode, Claus H.

    2015-01-16

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

  17. Lab Breakthrough: X-ray Laser Captures Atoms and Molecules in Action |

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

    Department of Energy X-ray Laser Captures Atoms and Molecules in Action Lab Breakthrough: X-ray Laser Captures Atoms and Molecules in Action July 18, 2012 - 12:51pm Addthis The Linac Coherent Light Source at SLAC is the world's most powerful X-ray laser, which helps researchers understand the extreme conditions found in the hearts of stars and giant planets guiding research into nuclear fusion, the mechanism that powers the sun. View the entire Lab Breakthrough playlist. Michael Hess Michael

  18. SAF 114O Laser Safety Orientation Training | Jefferson Lab

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

    Laser Safety Orientation (SAF114 O) training opportunity. Date: Friday, October 23 Time: 10:30 - noon Location: CEBAF Center Room A110 Read JLab EH&S Manual Chapter 6410 Laser...

  19. SAF 114O Laser Safety Orientation Training | Jefferson Lab

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

    SAF 114O Laser Safety Orientation Training For staff and students: Course: SAF 114O Laser Safety Orientation Date: Tuesday, July 14, 2015 Time: 10:30 - noon Location: CEBAF Center,...

  20. Jefferson Lab Director | Jefferson Lab

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

    Jefferson Lab Director Dr. Hugh E. Montgomery is the Director of the Thomas Jefferson National Accelerator Facility (Jefferson Lab). As the lab's chief executive officer, he is responsible for ensuring funding for the lab and for setting policy and program direction. In addition, he oversees the delivery of the lab program and ensures that Jefferson Lab complies with all regulations, laws and contract requirements. Montgomery also is responsible for developing and ensuring relationships with

  1. Four Crazy Uses for Lasers in the National Labs

    Office of Energy Efficiency and Renewable Energy (EERE)

    The top five craziest things our researchers do with lasers in their pursuit to understand our physical world.

  2. FEL Program | Jefferson Lab

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

    FEL Program Jefferson Lab's Free-Electron Laser is the world's most-powerful tunable laser and was developed using the lab's expertise in superconducting radiofrequency (SRF) ...

  3. Diagnostics for studies of novel laser ion acceleration mechanisms

    SciTech Connect (OSTI)

    Senje, Lovisa; Aurand, Bastian; Wahlström, Claes-Göran; Yeung, Mark; Kuschel, Stephan; Rödel, Christian; Wagner, Florian; Roth, Markus; Li, Kun; Neumayer, Paul; Dromey, Brendan; Jung, Daniel; Bagnoud, Vincent; Zepf, Matthew; Kuehl, Thomas

    2014-11-15

    Diagnostic for investigating and distinguishing different laser ion acceleration mechanisms has been developed and successfully tested. An ion separation wide angle spectrometer can simultaneously investigate three important aspects of the laser plasma interaction: (1) acquire angularly resolved energy spectra for two ion species, (2) obtain ion energy spectra for multiple species, separated according to their charge to mass ratio, along selected axes, and (3) collect laser radiation reflected from and transmitted through the target and propagating in the same direction as the ion beam. Thus, the presented diagnostic constitutes a highly adaptable tool for accurately studying novel acceleration mechanisms in terms of their angular energy distribution, conversion efficiency, and plasma density evolution.

  4. '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 ...

  5. 2003 - 01 | Jefferson Lab

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

    1 Jan 2003 Mon, 2003-01-27 13:00 Jefferson Lab technology, capabilities take center stage in construction of portion of DOE's Spallation Neutron Source accelerator Mon, 2003-01-27 13:00 Experiment generates THz radiation 20,000 times brighter than anyone else Mon, 2003-01-27 13:00 Jefferson Lab experiment works to clarify Real Compton Scattering Mon, 2003-01-27 13:00 Jefferson Lab's Free-Electron Laser explores promise of carbon nanotubes

  6. 2006 | Jefferson Lab

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

    Nov 2006 Mon, 2006-11-27 14:00 Reaching New Heights in Accelerator Technology Wed, 2006-11-08 14:45 Researchers' Hottest New Laser Beams 14.2 kW Oct 2006 Fri, 2006-10-13 14:00 Jefferson Lab Programmer a Finalist in Google's Global Code Jam Sep 2006 Tue, 2006-09-26 14:00 Jefferson Lab announces two Fall Science Series lectures; examine evidence of an ancient supernova, the magic of Harry Potter Thu, 2006-09-21 14:00 Lab Enhances Scientific Data Sharing with Cutting-Edge Connection Wed,

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

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

    Free-Electron Laser explores promise of carbon nanotubes Webs of nanotubes on collector ... CNTs are amazingly damage-tolerant, generally displaying nearly total "elastic recovery," ...

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

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

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

    2015-01-16

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

  9. Electron acceleration by a chirped Gaussian laser pulse in vacuum

    SciTech Connect (OSTI)

    Sohbatzadeh, F.; Mirzanejhad, S.; Ghasemi, M.

    2006-12-15

    Electron acceleration by a chirped Gaussian laser pulse is investigated numerically. A linear and negative chirp is employed in this study. At first, a simple analytical description for the chirp effect on the electron acceleration in vacuum is provided in one-dimensional model. The chirp mechanism is then extended to the interaction of a femtosecond laser pulse and electron. The electron final energy is obtained as a function of laser beam waist, laser intensity, chirp parameter, and initial phase of the laser pulse. It is shown that the electron final energy depends strongly on the chirp parameter and the initial phase of the laser pulse. There is an optimal value for the chirp parameter in which the electron acceleration takes place effectively. The energy gain increases with laser beam waist and intensity. It is also shown that the electron is accelerated within a few degrees to the axial direction. Emphasis is on the important aspect of the chirp effect on the energy gained by an electron from the electromagnetic wave.

  10. Giga-electronvolt electrons due to a transition from laser wakefield acceleration to plasma wakefield acceleration

    SciTech Connect (OSTI)

    Masson-Laborde, P. E. Teychenné, D.; Mo, M. Z.; Ali, A.; Fedosejevs, R.; Fourmaux, S.; Lassonde, P.; Kieffer, J. C.; Rozmus, W.

    2014-12-15

    We show through experiments that a transition from laser wakefield acceleration (LWFA) regime to a plasma wakefield acceleration (PWFA) regime can drive electrons up to energies close to the GeV level. Initially, the acceleration mechanism is dominated by the bubble created by the laser in the nonlinear regime of LWFA, leading to an injection of a large number of electrons. After propagation beyond the depletion length, leading to a depletion of the laser pulse, whose transverse ponderomotive force is not able to sustain the bubble anymore, the high energy dense bunch of electrons propagating inside bubble will drive its own wakefield by a PWFA regime. This wakefield will be able to trap and accelerate a population of electrons up to the GeV level during this second stage. Three dimensional particle-in-cell simulations support this analysis and confirm the scenario.

  11. Laser Safety Orientation SAF114O | Jefferson Lab

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

    Room A110 Time: 9:30 - 11:00 am Prerequisite ... Review JLab EH&S Manual Chapter 6410 Laser Safety Program and appendices at https:www.jlab.orgehsehsmanualmanual6410.html....

  12. Tunable Laser Reaches Record Power Level | Jefferson Lab

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

    This technology offers two commanding cost advantages for FELs. The laser can stay on 100 percent of the time instead of only the 1 percent or 2 percent current FELs are capable ...

  13. Free electron laser using Rf coupled accelerating and decelerating structures

    DOE Patents [OSTI]

    Brau, Charles A. (Los Alamos, NM); Swenson, Donald A. (Los Alamos, NM); Boyd, Jr., Thomas J. (Los Alamos, NM)

    1984-01-01

    A free electron laser and free electron laser amplifier using beam transport devices for guiding an electron beam to a wiggler of a free electron laser and returning the electron beam to decelerating cavities disposed adjacent to the accelerating cavities of the free electron laser. Rf energy is generated from the energy depleted electron beam after it emerges from the wiggler by means of the decelerating cavities which are closely coupled to the accelerating cavities, or by means of a second bore within a single set of cavities. Rf energy generated from the decelerated electron beam is used to supplement energy provided by an external source, such as a klystron, to thereby enhance overall efficiency of the system.

  14. An inverse free electron laser accelerator: Experiment and theoretical interpretation

    SciTech Connect (OSTI)

    Fang, Jyan-Min

    1997-06-01

    Experimental and numerical studies of the Inverse Free Electron Laser using a GW-level 10.6 {mu}m CO{sub 2} laser have been carried out at Brookhaven`s Accelerator Test Facility. An energy gain of 2.5 % ({Delta}E/E) on a 40 MeV electron beam has been observed E which compares well with theory. The effects on IFEL acceleration with respect to the variation of the laser electric field, the input electron beam energy, and the wiggler magnetic field strength were studied, and show the importance of matching the resonance condition in the IFEL. The numerical simulations were performed under various conditions and the importance of the electron bunching in the IFEL is shown. The numerical interpretation of our IFEL experimental results was examined. Although good numerical agreement with the experimental results was obtained, there is a discrepancy between the level of the laser power measured in the experiment and used in the simulation, possibly due to the non-Gaussian profile of the input high power laser beam. The electron energy distribution was studied numerically and a smoothing of the energy spectrum by the space charge effect at the location of the spectrometer was found, compared with the spectrum at the exit of the wiggler. The electron bunching by the IFEL and the possibility of using the IFEL as an electron prebuncher for another laser-driven accelerator were studied numerically. We found that bunching of the electrons at 1 meter downstream from the wiggler can be achieved using the existing facility. The simulation shows that there is a fundamental difference between the operating conditions for using the IFEL as a high gradient accelerator, and as a prebuncher for another accelerator.

  15. Laser Polishing: Green Path to Improved Accelerator Surfaces

    SciTech Connect (OSTI)

    Kelley, Michael

    2015-10-06

    We pursued three paths toward reducing the initial cost and operating expense of particle accelerators. First, we investigated laser surface melting as an alternative to the present cavity processing approach using noxious chemicals. We successfully demonstrated a process that can be scaled up and defined the path to do so. Second, we sought to develop tailored laser pulsing as a way to simulate the thermal fatigue environment responsible for damaging accelerator components. Though the first three steps along the path were successfully accomplished, the final segment depended on collaborators with unique facilities, whose program was terminated. The third segment aimed to acquire a fundamental understanding of the widely used chemical process that yields the rough surfaces smoothed by laser melting. We found that the roughness is an inherent and unavoidable outcome that limits the performance of components processed thusly.

  16. Researchers' Hottest New Laser Beams 14.2 kW | Jefferson Lab

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

    Researchers' Hottest New Laser Beams 14.2 kW Researchers' Hottest New Laser Beams 14.2 kW For more information: Office of Naval Research press release The linear accelerator portion of the FEL. On Thursday, Oct. 26, Free-Electron Laser (FEL) team members knew they were within reach of a goal they'd pursued for two years. They were aiming to produce 10 kW of laser light at an infrared wavelength of 1.61 microns. On that day, they blew past the milestone to produce 11.7 kW. But the team didn't

  17. Laser damage threshold measurements of optical materials for direct laser accelerators

    SciTech Connect (OSTI)

    Soong, Ken; Byer, R. L.; Colby, E. R.; England, R. J.; Peralta, E. A.

    2012-12-21

    The laser-damage threshold is a fundamental limit for any dielectric laser-driven accelerator and is set by the material of the structure. In this paper, we present a theoretical model of the laser damage mechanism, in comparison with experimental data on the damage threshold of silicon. Additionally, we present damage threshold measurement data of various optical materials, most of which have not been previously characterized in the picosecond-regime.

  18. Direct High-Power Laser Acceleration of Ions for Medical Applications

    SciTech Connect (OSTI)

    Salamin, Yousef I.; Harman, Zoltan; Keitel, Christoph H.

    2008-04-18

    Theoretical investigations show that linearly and radially polarized multiterawatt and petawatt laser beams, focused to subwavelength waist radii, can directly accelerate protons and carbon nuclei, over micron-size distances, to the energies required for hadron cancer therapy. Ions accelerated by radially polarized lasers have generally a more favorable energy spread than those accelerated by linearly polarized lasers of the same intensity.

  19. About Jefferson Lab | Jefferson Lab

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

    Jefferson Lab Experiments carried out at Jefferson Lab probe the building blocks of matter - helping us to better understand these particles and the forces that bind them - and ultimately our world. Experiments carried out at Jefferson Lab probe the building blocks of matter - helping us to better understand these particles and the forces that bind them - and ultimately our world. Thomas Jefferson National Accelerator Facility (Jefferson Lab) is one of 17 national laboratories funded by the U.S.

  20. Laser polishing for topography management of accelerator cavity surfaces

    SciTech Connect (OSTI)

    Zhao, Liang; Klopf, J. Mike; Reece, Charles E.; Kelley, Michael J.

    2015-07-20

    Improved energy efficiency and reduced cost are greatly desired for advanced particle accelerators. Progress toward both can be made by atomically-smoothing the interior surface of the niobium superconducting radiofrequency accelerator cavities at the machine's heart. Laser polishing offers a green alternative to the present aggressive chemical processes. We found parameters suitable for polishing niobium in all surface states expected for cavity production. As a result, careful measurement of the resulting surface chemistry revealed a modest thinning of the surface oxide layer, but no contamination.

  1. 2009 | Jefferson Lab

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

    Dec 2009 Wed, 2009-12-02 13:00 Lasers Used to Make First Boron-Nitride Nanotube Yarn Nov 2009 Wed, 2009-11-18 13:00 Proton's party pals may alter its internal structure Tue, 2009-11-10 13:00 First Director Named for Center for Accelerator Science Wed, 2009-11-04 13:00 Jefferson Lab Dec. 9 Science Lecture Discusses How Visual Illusions Trick the Mind Sep 2009 Tue, 2009-09-29 14:00 Energy Secretary Chu Celebrates Jefferson Lab's 25th Anniversary Thu, 2009-09-17 14:00 American-Made SRF Cavity

  2. 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

  3. 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

  4. 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

  5. Refluxed electrons direct laser acceleration in ultrahigh laser and relativistic critical density plasma interaction

    SciTech Connect (OSTI)

    Wang, J.; Zhao, Z. Q.; Zhu, B.; Zhang, Z. M.; Zhou, W. M.; Gu, Y. Q.; Cao, L. H.

    2015-01-15

    Refluxed electrons direct laser acceleration is proposed so as to generate a high-charge energetic electron beam. When a laser pulse is incident on a relativistic critical density target, the rising edge of the pulse heats the target and the sheath fields on the both sides of the target reflux some electrons inside the expanding target. These electrons can be trapped and accelerated due to the self-transparency and the negative longitudinal electrostatic field in the expanding target. Some of the electrons can be accelerated to energies exceeding the ponderomotive limit 1/2a{sub 0}{sup 2}mc{sup 2}. Effective temperature significantly above the ponderomotive scaling is observed. Furthermore, due to the limited expanding length, the laser propagating instabilities are suppressed in the interaction. Thus, high collimated beams with tens of μC charge can be generated.

  6. Lab-Corps Pilot Accelerates Private-Sector Adoption of Game-Changing Technologies

    Broader source: Energy.gov [DOE]

    Last week, the EERE Lab-Corps Initiative graduated its first class of top scientists who’ve gone back to school to gain an entrepreneurial education. With technologies ranging from bioenergy to building efficiencies, this $2.3 million pilot program, managed by the National Renewable Energy Laboratory (NREL), trains top lab researchers across the nation on how to move high-impact national laboratory-invented technologies into the market.

  7. Selective deuterium ion acceleration using the Vulcan petawatt laser

    SciTech Connect (OSTI)

    Krygier, A. G.; Morrison, J. T.; Kar, S. Ahmed, H.; Alejo, A.; Green, A.; Jung, D.; Clarke, R.; Notley, M.; Fuchs, J.; Vassura, L.; Kleinschmidt, A.; Roth, M.; Najmudin, Z.; Nakamura, H.; Norreys, P.; Oliver, M.; Zepf, M.; Borghesi, M.; Freeman, R. R.

    2015-05-15

    We report on the successful demonstration of selective acceleration of deuterium ions by target-normal sheath acceleration (TNSA) with a high-energy petawatt laser. TNSA typically produces a multi-species ion beam that originates from the intrinsic hydrocarbon and water vapor contaminants on the target surface. Using the method first developed by Morrison et al. [Phys. Plasmas 19, 030707 (2012)], an ion beam with >99% deuterium ions and peak energy 14 MeV/nucleon is produced with a 200 J, 700 fs, >10{sup 20}W/cm{sup 2} laser pulse by cryogenically freezing heavy water (D{sub 2}O) vapor onto the rear surface of the target prior to the shot. Within the range of our detectors (0°–8.5°), we find laser-to-deuterium-ion energy conversion efficiency of 4.3% above 0.7 MeV/nucleon while a conservative estimate of the total beam gives a conversion efficiency of 9.4%.

  8. Jefferson Lab At A Glance | Jefferson Lab

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

    Jefferson Lab At A Glance Jefferson Lab was created to build and operate the Continuous Electron Beam Accelerator Facility, or CEBAF. Jefferson Lab is world-unique user facility for Nuclear Physics. Jefferson Lab's mission is to gain a deeper understanding of the structure of matter through advances in fundamental research in nuclear physics, and through advances in photon science and related research. Jefferson Lab began experiments is 1995 Jefferson Lab has 1,376 visiting scientists, or Users,

  9. Observation of Beam Loading in a Laser-Plasma Accelerator

    SciTech Connect (OSTI)

    Rechatin, C.; Ismail, A. Ben; Lim, J.; Faure, J.; Malka, V.; Davoine, X.; Lefebvre, E.; Lifschitz, A.

    2009-11-06

    Beam loading is the phenomenon which limits the charge and the beam quality in plasma based accelerators. An experimental study conducted with a laser-plasma accelerator is presented. Beam loading manifests itself through the decrease of the beam energy, the reduction of dark current, and the increase of the energy spread for large beam charge. 3D PIC simulations are compared to the experimental results and confirm the effects of beam loading. It is found that, in our experimental conditions, the trapped electron beams generate decelerating fields on the order of 1 (GV/m)/pC and that beam loading effects are optimized for trapped charges of about 20 pC.

  10. Laser induced electron acceleration in an ion-channel guiding

    SciTech Connect (OSTI)

    Esmaeilzadeh, Mahdi; Taghavi, Amin; Hanifpour, Maryam

    2011-09-15

    Direct electron acceleration by a propagating laser pulse of circular polarization in an ion-channel guiding is studied by developing a relativistic three-dimensional single particle code. The electron chaotic dynamic is also studied using time series, power spectrum, and Liapunov exponent. It is found that the electron motion is regular (non-chaotic) for laser pulse with short time duration, while for long enough time duration, the electron motion may be chaotic. In the case of non-chaotic motion, the electron can gain and retain very high energy in the presence of ion-channel before reaching the steady-state, whereas in the case of chaotic motion, the electron gains energy and then loses it very rapidly in an unpredictable manner.

  11. Staging of laser-plasma accelerators (Journal Article) | SciTech...

    Office of Scientific and Technical Information (OSTI)

    Journal Article: Staging of laser-plasma accelerators Citation Details In-Document Search ... Type: Publisher's Accepted Manuscript Journal Name: Physics of Plasmas Additional ...

  12. Performance of the accelerator driver of Jefferson Laboratory's free-electron laser

    SciTech Connect (OSTI)

    Bohn, C.L.; Benson, S.; Biallas, G.

    1999-04-01

    The driver of Jefferson Lab's kW-level infrared free-electron laser (FEL) is a superconducting, recirculating accelerator that recovers about 75% of the electron-beam power and converts it to radiofrequency power. In achieving first lasing, the accelerator operated straight-ahead to deliver 38 MeV, 1.1 mA cw current through the wiggler for lasing at wavelengths in the vicinity of 5 {mu}m. Just prior to first lasing, measured rms beam properties at the wiggler were 7.5{+-}1.5 mm-mr normalized transverse emittance, 26{+-}7 keV-deg longitudinal emittance, and 0.4{+-}0.1 ps bunch length which yielded a peak current of 60{+-}15A. The waste beam was then sent directly to a dump, bypassing the recirculation loop. Stable operation at up to 311 W cw was achieved in this mode. Commissioning the recirculation loop then proceeded. As of this Conference, the machine has recirculated cw average current up to 4 mA, and has lased cw with energy recover up to 710 W.

  13. Multiple quasi-monoenergetic electron beams from laser-wakefield acceleration with spatially structured laser pulse

    SciTech Connect (OSTI)

    Ma, Y.; Li, M. H.; Li, Y. F.; Wang, J. G.; Tao, M. Z.; Han, Y. J.; Zhao, J. R.; Huang, K.; Yan, W. C.; Ma, J. L.; Li, Y. T.; Chen, L. M.; Li, D. Z.; Chen, Z. Y.; Sheng, Z. M.; Zhang, J.

    2015-08-15

    By adjusting the focus geometry of a spatially structured laser pulse, single, double, and treble quasi-monoenergetic electron beams were generated, respectively, in laser-wakefield acceleration. Single electron beam was produced as focusing the laser pulse to a single spot. While focusing the laser pulse to two spots that are approximately equal in energy and size and intense enough to form their own filaments, two electron beams were produced. Moreover, with a proper distance between those two focal spots, three electron beams emerged with a certain probability owing to the superposition of the diffractions of those two spots. The energy spectra of the multiple electron beams are quasi-monoenergetic, which are different from that of the large energy spread beams produced due to the longitudinal multiple-injection in the single bubble.

  14. Automatic Beam Path Analysis of Laser Wakefield Particle Acceleration Data

    SciTech Connect (OSTI)

    Rubel, Oliver; Geddes, Cameron G.R.; Cormier-Michel, Estelle; Wu, Kesheng; Prabhat,; Weber, Gunther H.; Ushizima, Daniela M.; Messmer, Peter; Hagen, Hans; Hamann, Bernd; Bethel, E. Wes

    2009-10-19

    Numerical simulations of laser wakefield particle accelerators play a key role in the understanding of the complex acceleration process and in the design of expensive experimental facilities. As the size and complexity of simulation output grows, an increasingly acute challenge is the practical need for computational techniques that aid in scientific knowledge discovery. To that end, we present a set of data-understanding algorithms that work in concert in a pipeline fashion to automatically locate and analyze high energy particle bunches undergoing acceleration in very large simulation datasets. These techniques work cooperatively by first identifying features of interest in individual timesteps, then integrating features across timesteps, and based on the information derived perform analysis of temporally dynamic features. This combination of techniques supports accurate detection of particle beams enabling a deeper level of scientific understanding of physical phenomena than hasbeen possible before. By combining efficient data analysis algorithms and state-of-the-art data management we enable high-performance analysis of extremely large particle datasets in 3D. We demonstrate the usefulness of our methods for a variety of 2D and 3D datasets and discuss the performance of our analysis pipeline.

  15. Ultrafast pulse radiolysis using a terawatt laser wakefield accelerator

    SciTech Connect (OSTI)

    Oulianov, Dmitri A.; Crowell, Robert A.; Gosztola, David J.; Shkrob, Ilya A.; Korovyanko, Oleg J.; Rey-de-Castro, Roberto C.

    2007-03-01

    We report ultrafast pulse radiolysis transient absorption (TA) spectroscopy measurements from the Terawatt Ultrafast High Field Facility (TUHFF) at Argonne National Laboratory. TUHFF houses a 20 TW Ti:sapphire laser system that generates 2.5 nC subpicosecond pulses of multi-mega-electron-volt electrons at 10 Hz using laser wakefield acceleration. The system has been specifically optimized for kinetic TA measurements in a pump-probe fashion. This requires averaging over many shots which necessitates stable, reliable generation of electron pulses. The latter were used to generate excess electrons in pulse radiolysis of liquid water and concentrated solutions of perchloric acid. The hydronium ions in the acidic solutions react with the hydrated electrons resulting in the rapid decay of the transient absorbance at 800 nm on the picosecond time scale. Normalization of the TA signal leads to an improvement in the signal to noise ratio by a factor of 5 to 6. Due the pointing instability of the laser this improvement was limited to a 5 to 10 min acquisition period, requiring periodic recalibration and realignment. Time resolution, defined by the rise time of TA signal from hydrated electron in pulse radiolysis of liquid water, of a few picoseconds, has been demonstrated. The current time resolution is determined primarily by the physical dimensions of the sample and the detection sensitivity. Subpicosecond time resolution can be achieved by using thinner samples, more sensitive detection techniques, and improved electron beam quality.

  16. Lasers As Particle Accelerators In Medicine: From Laser-Driven Protons To Imaging With Thomson Sources

    SciTech Connect (OSTI)

    Pogorelsky, I. V.; Babzien, M.; Polyanskiy, M. N.; Yakimenko, V.; Dover, N. P.; Palmer, C. A. J.; Najmudin, Z.; Shkolnikov, P.; Williams, O.; Rosenzweig, J.; Oliva, P.; Carpinelli, M.; Golosio, B.; Delogu, P.; Stefanini, A.; Endrizzi, M.

    2011-06-01

    We report our recent progress using a high-power, picosecond CO{sub 2} laser for Thomson scattering and ion acceleration experiments. These experiments capitalize on certain advantages of long-wavelength CO{sub 2} lasers, such as their high number of photons per energy unit and beneficial wavelength- scaling of the electrons' ponderomotive energy and critical plasma frequency. High X-ray fluxes produced in the interactions of the counter-propagating laser- and electron-beams for obtaining single-shot, high-contrast images of biological objects. The laser, focused on a hydrogen jet, generated a monoenergetic proton beam via the radiation-pressure mechanism. The energy of protons produced by this method scales linearly with the laser's intensity. We present a plan for scaling the process into the range of 100-MeV proton energy via upgrading the CO{sub 2} laser. This development will enable an advance to the laser-driven proton cancer therapy.

  17. Summary report of working group 3: High gradient and laser-structure based acceleration

    SciTech Connect (OSTI)

    Solyak, N.; Cowan, B.M.; /Tech-X, Boulder

    2010-01-01

    The charge for the working group on high gradient and laser-structure based acceleration was to assess the current challenges involved in developing an advanced accelerator based on electromagnetic structures, and survey state-of-the-art methods to address those challenges. The topics of more than 50 presentations in the working group covered a very broad range of issues, from ideas, theoretical models and simulations, to design and manufacturing of accelerating structures and, finally, experimental results on obtaining extremely high accelerating gradients in structures from conventional microwave frequency range up to THz and laser frequencies. Workshop discussion topics included advances in the understanding of the physics of breakdown and other phenomena, limiting high gradient performance of accelerating structures. New results presented in this workshop demonstrated significant progress in the fields of conventional vacuum structure-based acceleration, dielectric wakefield acceleration, and laser-structure acceleration.

  18. Modeling laser wakefield accelerators in a Lorentz boosted frame

    SciTech Connect (OSTI)

    Vay, J.-L.; Geddes, C.G.R.; Cormier-Michel, E.; Grote, D.P.

    2010-09-15

    Modeling of laser-plasma wakefield accelerators in an optimal frame of reference [1] is shown to produce orders of magnitude speed-up of calculations from first principles. Obtaining these speedups requires mitigation of a high frequency instability that otherwise limits effectiveness in addition to solutions for handling data input and output in a relativistically boosted frame of reference. The observed high-frequency instability is mitigated using methods including an electromagnetic solver with tunable coefficients, its extension to accomodate Perfectly Matched Layers and Friedman's damping algorithms, as well as an efficient large bandwidth digital filter. It is shown that choosing theframe of the wake as the frame of reference allows for higher levels of filtering and damping than is possible in other frames for the same accuracy. Detailed testing also revealed serendipitously the existence of a singular time step at which the instability level is minimized, independently of numerical dispersion, thus indicating that the observed instability may not be due primarily to Numerical Cerenkov as has been conjectured. The techniques developed for Cerenkov mitigation prove nonetheless to be very efficient at controlling the instability. Using these techniques, agreement at the percentage level is demonstrated between simulations using different frames of reference, with speedups reaching two orders of magnitude for a 0.1 GeV class stages. The method then allows direct and efficient full-scale modeling of deeply depleted laser-plasma stages of 10 GeV-1 TeV for the first time, verifying the scaling of plasma accelerators to very high energies. Over 4, 5 and 6 orders of magnitude speedup is achieved for the modeling of 10 GeV, 100 GeV and 1 TeV class stages, respectively.

  19. Electron Beam Charge Diagnostics for Laser Plasma Accelerators

    SciTech Connect (OSTI)

    Nakamura, Kei; Gonsalves, Anthony; Lin, Chen; Smith, Alan; Rodgers, David; Donahue, Rich; Byrne, Warren; Leemans, Wim

    2011-06-27

    A comprehensive study of charge diagnostics is conducted to verify their validity for measuring electron beams produced by laser plasma accelerators (LPAs). First, a scintillating screen (Lanex) was extensively studied using subnanosecond electron beams from the Advanced Light Source booster synchrotron, at the Lawrence Berkeley National Laboratory. The Lanex was cross calibrated with an integrating current transformer (ICT) for up to the electron energy of 1.5 GeV, and the linear response of the screen was confirmed for charge density and intensity up to 160 pC/mm{sup 2} and 0.4 pC/(ps mm{sup 2}), respectively. After the radio-frequency accelerator based cross calibration, a series of measurements was conducted using electron beams from an LPA. Cross calibrations were carried out using an activation-based measurement that is immune to electromagnetic pulse noise, ICT, and Lanex. The diagnostics agreed within {+-}8%, showing that they all can provide accurate charge measurements for LPAs.

  20. Laser acceleration and deflection of 963 keV electrons with a silicon dielectric structure

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

    Leedle, Kenneth J.; Pease, R. Fabian; Byer, Robert L.; Harris, James S.

    2015-02-12

    Radio frequency particle accelerators are ubiquitous in ultrasmall and ultrafast science, but their size and cost have prompted exploration of compact and scalable alternatives such as the dielectric laser accelerator. We present the first demonstration, to the best of our knowledge, of high gradient laser acceleration and deflection of electrons with a silicon structure. Driven by a 5 nJ, 130 fs mode-locked Ti:sapphire laser at 907 nm wavelength, our devices achieve accelerating gradients in excess of 200 MeV/m and suboptical cycle streaking of 96.30 keV electrons. These results pave the way for high gradient silicon dielectric laser accelerators using commercialmore » lasers and subfemtosecond electron beam experiments.« less

  1. Laser nitriding for niobium superconducting radio-frequency accelerator cavities

    SciTech Connect (OSTI)

    Senthilraja Singaravelu, John Klopf, Gwyn Williams, Michael Kelley

    2010-10-01

    Particle accelerators are a key tool for scientific research ranging from fundamental studies of matter to analytical studies at light sources. Cost-forperformance is critical, both in terms of initial capital outlay and ongoing operating expense, especially for electricity. It depends on the niobium superconducting radiofrequency (SRF) accelerator cavities at the heart of most of these machines. Presently Nb SRF cavities operate near 1.9 K, well (and expensively) below the 4.2 K atmospheric boiling point of liquid He. Transforming the 40 nm thick active interior surface layer from Nb to delta NbN (Tc = 17 K instead of 9.2 K) appears to be a promising approach. Traditional furnace nitriding appears to have not been successful for this. Further, exposing a complete SRF cavity to the time-temperature history required for nitriding risks mechanical distortion. Gas laser nitriding instead has been applied successfully to other metals [P.Schaaf, Prog. Mat. Sci. 47 (2002) 1]. The beam dimensions and thermal diffusion length permit modeling in one dimension to predict the time course of the surface temperature for a range of per-pulse energy densities. As with the earlier work, we chose conditions just sufficient for boiling as a reference point. We used a Spectra Physics HIPPO nanosecond laser (l = 1064 nm, Emax= 0.392 mJ, beam spot@ 34 microns, PRF =15 – 30 kHz) to obtain an incident fluence of 1.73 - 2.15 J/cm2 for each laser pulse at the target. The target was a 50 mm diameter SRF-grade Nb disk maintained in a nitrogen atmosphere at a pressure of 550 – 625 torr and rotated at a constant speed of 9 rpm. The materials were examined by scanning electron microscopy (SEM), electron probe microanalysis (EPMA) and x-ray diffraction (XRD). The SEM images show a sharp transition with fluence from a smooth, undulating topography to significant roughening, interpreted here as the onset of ablation. EPMA measurements of N/Nb atom ratio as a function of depth found a constant

  2. 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.

  3. Effect of polarization and focusing on laser pulse driven auto-resonant particle acceleration

    SciTech Connect (OSTI)

    Sagar, Vikram; Sengupta, Sudip; Kaw, Predhiman [Institute for Plasma Research, Bhat, Gandhinagar-382428 (India)] [Institute for Plasma Research, Bhat, Gandhinagar-382428 (India)

    2014-04-15

    The effect of laser polarization and focusing is theoretically studied on the final energy gain of a particle in the Auto-resonant acceleration scheme using a finite duration laser pulse with Gaussian shaped temporal envelope. The exact expressions for dynamical variables viz. position, momentum, and energy are obtained by analytically solving the relativistic equation of motion describing particle dynamics in the combined field of an elliptically polarized finite duration pulse and homogeneous static axial magnetic field. From the solutions, it is shown that for a given set of laser parameters viz. intensity and pulse length along with static magnetic field, the energy gain by a positively charged particle is maximum for a right circularly polarized laser pulse. Further, a new scheme is proposed for particle acceleration by subjecting it to the combined field of a focused finite duration laser pulse and static axial magnetic field. In this scheme, the particle is initially accelerated by the focused laser field, which drives the non-resonant particle to second stage of acceleration by cyclotron Auto-resonance. The new scheme is found to be efficient over two individual schemes, i.e., auto-resonant acceleration and direct acceleration by focused laser field, as significant particle acceleration can be achieved at one order lesser values of static axial magnetic field and laser intensity.

  4. Jefferson Lab Video | Jefferson Lab

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

    Video To learn more about Jefferson Lab, its unique capabilities and its research, click on this link to watch a 12-minute video, Exploring the Nature of Matter. If you have more questions after watching the video, you can find more information by clicking one of the links or visiting our Brochures page. You can also visit the Resources section for more information. Particle Accelerator Modules Watch Jeffferson Lab's 12-minute video, Exploring the Nature of Matter. Additional Links Brochures

  5. Brochures | Jefferson Lab

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

    Brochures Brochures 12 GeV Upgrade Brochure 12 GeV Upgrade Brochure Nuclear Imaging Brochure Nuclear Imaging Brochure Superconducting Radiofrequency Superconducting Radiofrequency Jefferson Lab Viewbook Jefferson Lab Viewbook Accelerating Innovation Accelerating Innovation Jefferson Lab General Brochure Jefferson Lab General Brochure Science Education Brochure Science Education Brochure Posters Experimental Hall A Poster Science Highlights from the First 15 Years of Physics Experimental Hall A

  6. Status of the visible Free-Electron Laser at the Brookhaven Accelerator Test Facility

    SciTech Connect (OSTI)

    Batchelor, K.; Ben-Zvi, I.; Fernow, R.C.; Fisher, A.S.; Friedman, A.; Gallardo, J.; Ingold, G.; Kirk, H.; Kramer, S.; Lin, L.; Rogers, J.T.; Sheehan, J.F.; van Steenbergen, A.; Woodle, M.; Xie, J.; Yu, L.H.; Zhang, R. ); Bhowmik, A. . Rocketdyne Div.)

    1991-01-01

    The 500 nm Free-Electron Laser (ATF) of the Brookhaven National Laboratory is reviewed. We present an overview of the ATF, a high-brightness, 50-MeV, electron accelerator and laser complex which is a users' facility for accelerator and beam physics. A number of laser acceleration and FEL experiments are under construction at the ATF. The visible FEL experiment is based on a novel superferric 8.8 mm period undulator. The electron beam parameters, the undulator, the optical resonator, optical and electron beam diagnostics are discussed. The operational status of the experiment is presented. 22 refs., 7 figs.

  7. Research | Jefferson Lab

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

    Laser. A D D I T I O N A L L I N K S: Read more Nuclear Imaging Research Jefferson Lab's Radiation Detector and Imaging Group Members of Jefferson Lab's Radiation Detector &...

  8. High-Isp Mode Of Pulsed Laser-Electromagnetic Hybrid Accelerator For Space Propulsion Applications

    SciTech Connect (OSTI)

    Horisawa, Hideyuki; Kishida, Yoshiaki; Funaki, Ikkoh

    2010-10-08

    A fundamental study of a newly developed rectangular pulsed laser-electromagnetic hybrid thruster was conducted. Laser-ablation plasma in the thruster was induced through laser beam irradiation onto a solid target and accelerated by electrical means instead of direct acceleration only by using a laser beam. The performance of the thrusters was evaluated by measuring the mass shot and impulse bit. As results, significantly high specific impulses up to 7,200 sec were obtained at the charge energies of 8.6 J. In addition, typical thrust efficiency varied between 11.8% and 21.3% depending on the charge energy.

  9. A Pulsed Laser-Electromagnetic Hybrid Accelerator For Space Propulsion Application

    SciTech Connect (OSTI)

    Shinohara, Tadaki; Horisawa, Hideyuki; Baba, Msahumi; Tei, Kazuyoku

    2010-05-06

    A fundamental study of a newly developed rectangular pulsed laser-electromagnetic hybrid thruster was conducted, in which laser-ablation plasma was induced through laser beam irradiation onto a solid target and accelerated by electrical means instead of direct acceleration only by using a laser beam. The performance of the thruster was evaluated by measuring the mass per shot and impulse bit. As results, significantly high specific impulse ranging from 5,000 approx6,000 sec were obtained at energies of 0.1 and 8.6 J, respectively. In addition, the typical thrust efficiency varied from 17% to 19% depending on the charge energy.

  10. Jefferson Lab awards upgrade contracts | Jefferson Lab

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

    awards upgrade contracts Jefferson Lab awards upgrade contracts Michael Schwartz Inside Business, January 9, 2009 Jefferson Lab announced last week it awarded three contracts worth approximately a combined $5 million as part of its planned $310 million upgrade that will double the power of its electron beam accelerator. The Newport News-based nuclear physics lab, known officially as the U.S. Department of Energy's Thomas Jefferson National Accelerator Facility, received approval from DOE for the

  11. 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.

  12. Accelerator on a Chip

    Broader source: Energy.gov [DOE]

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

  13. 2010 - 11 | Jefferson Lab

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

    1 Nov 2010 Tue, 2010-11-09 13:00 Jefferson Lab Fall Lecture: Exploring Our World With Particle Accelerators

  14. Resources | Jefferson Lab

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

    Resources Resources Machine Control Center Display Jefferson Lab's accelerator is operated from the Machine Control Center. The MCC features a full-wall display that allows...

  15. Weak Interaction | Jefferson Lab

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

    Weak Interaction February 22, 2011 Jefferson Lab has an accelerator designed to do incisive medium energy physics. This program is dominated by experiments aimed at developing our...

  16. BESTIA - the next generation ultra-fast CO2 laser for advanced accelerator research

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

    Pogorelsky, Igor V.; Babzien, Markus; Ben-Zvi, Ilan; Skaritka, John; Polyanskiy, Mikhail N.

    2015-12-02

    Over the last two decades, BNL’s ATF has pioneered the use of high-peak power CO2 lasers for research in advanced accelerators and radiation sources. In addition, our recent developments in ion acceleration, Compton scattering, and IFELs have further underscored the benefits from expanding the landscape of strong-field laser interactions deeper into the mid-infrared (MIR) range of wavelengths. This extension validates our ongoing efforts in advancing CO2 laser technology, which we report here. Our next-generation, multi-terawatt, femtosecond CO2 laser will open new opportunities for studying ultra-relativistic laser interactions with plasma in the MIR spectral domain, including new regimes in the particlemore » acceleration of ions and electrons.« less

  17. Test particle simulation of direct laser acceleration in a density-modulated plasma waveguide

    SciTech Connect (OSTI)

    Lin, M.-W.; Jovanovic, I.

    2012-11-15

    Direct laser acceleration (DLA) of electrons by the use of the intense axial electric field of an ultrafast radially polarized laser pulse is a promising technique for future compact accelerators. Density-modulated plasma waveguides can be implemented for guiding the propagation of the laser pulse to extend the acceleration distance and for the quasi-phase-matching between the accelerated electrons and the laser pulse. A test particle model is developed to study the optimal axial density modulation structure of plasma waveguides for laser pulses to efficiently accelerate co-propagating electrons. A simple analytical approach is also presented, which can be used to estimate the energy gain in DLA. The analytical model is validated by the test particle simulation. The effect of injection phase and acceleration of electrons injected at various radial positions are studied. The results indicate that a positively chirped density modulation of the waveguide structure is required to accelerate electron with low initial energies, and can be effectively optimized. A wider tolerance on the injection phase and radial distance from the waveguide axis exists for electrons injected with a higher initial energy.

  18. 2003 - 06 | Jefferson Lab

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

    6 Jun 2003 Fri, 2003-06-13 14:00 Jefferson Lab's upgraded Free-Electron Laser produces first ligh

  19. 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.

  20. Injection and acceleration of electron bunch in a plasma wakefield produced by a chirped laser pulse

    SciTech Connect (OSTI)

    Afhami, Saeedeh; Eslami, Esmaeil

    2014-06-15

    An ultrashort laser pulse propagating in plasma can excite a nonlinear plasma wakefield which can trap and accelerate charged particles up to GeV. One-dimensional analysis of electron injection, trapping, and acceleration by different chirped pulses propagating in plasma is investigated numerically. In this paper, we inject electron bunches in front of the chirped pulses. It is indicated that periodical chirped laser pulse can trap electrons earlier than other pulses. It is shown that periodical chirped laser pulses lead to decrease the minimum momentum necessary to trap the electrons. This is due to the fact that periodical chirped laser pulses are globally much efficient than nonchirped pulses in the wakefield generation. It is found that chirped laser pulses could lead to much larger electron energy than that of nonchirped pulses. Relative energy spread has a lower value in the case of periodical chirped laser pulses.

  1. 2D electron density profile measurement in tokamak by laser-accelerated ion-beam probe

    SciTech Connect (OSTI)

    Chen, Y. H.; Yang, X. Y.; Lin, C. E-mail: cjxiao@pku.edu.cn; Wang, X. G.; Xiao, C. J. E-mail: cjxiao@pku.edu.cn; Wang, L.; Xu, M.

    2014-11-15

    A new concept of Heavy Ion Beam Probe (HIBP) diagnostic has been proposed, of which the key is to replace the electrostatic accelerator of traditional HIBP by a laser-driven ion accelerator. Due to the large energy spread of ions, the laser-accelerated HIBP can measure the two-dimensional (2D) electron density profile of tokamak plasma. In a preliminary simulation, a 2D density profile was reconstructed with a spatial resolution of about 2 cm, and with the error below 15% in the core region. Diagnostics of 2D density fluctuation is also discussed.

  2. Protons acceleration in thin CH foils by ultra-intense femtosecond laser pulses

    SciTech Connect (OSTI)

    Kosarev, I. N.

    2015-03-15

    Interaction of femtosecond laser pulses with the intensities 10{sup 21}, 10{sup 22 }W/cm{sup 2} with CH plastic foils is studied in the framework of kinetic theory of laser plasma based on the construction of propagators (in classical limit) for electron and ion distribution functions in plasmas. The calculations have been performed for real densities and charges of plasma ions. Protons are accelerated both in the direction of laser pulse (up to 1 GeV) and in the opposite direction (more than 5 GeV). The mechanisms of forward acceleration are different for various intensities.

  3. Numerical modeling of multi-GeV laser wakefield electron acceleration inside a dielectric capillary tube

    SciTech Connect (OSTI)

    Paradkar, B. S.; Cros, B.; Maynard, G.; Mora, P.

    2013-08-15

    Numerical modeling of laser wakefield electron acceleration inside a gas filled dielectric capillary tube is presented. Guiding of a short pulse laser inside a dielectric capillary tube over a long distance (∼1 m) and acceleration of an externally injected electron bunch to ultra-relativistic energies (∼5-10 GeV) are demonstrated in the quasi-linear regime of laser wakefield acceleration. Two dimensional axisymmetric simulations were performed with the code WAKE-EP (Extended Performances), which allows computationally efficient simulations of such long scale plasma. The code is an upgrade of the quasi-static particle code, WAKE [P. Mora and T. M. Antonsen, Jr., Phys. Plasmas 4, 217 (1997)], to simulate the acceleration of an externally injected electron bunch (including beam loading effect) and propagation of the laser beam inside a dielectric capillary. The influence of the transverse electric field of the plasma wake on the radial loss of the accelerated electrons to the dielectric wall is investigated. The stable acceleration of electrons to multi-GeV energy with a non-resonant laser pulse with a large spot-size is demonstrated.

  4. Optimizing chirped laser pulse parameters for electron acceleration in vacuum

    SciTech Connect (OSTI)

    Akhyani, Mina; Jahangiri, Fazel; Niknam, Ali Reza; Massudi, Reza

    2015-11-14

    Electron dynamics in the field of a chirped linearly polarized laser pulse is investigated. Variations of electron energy gain versus chirp parameter, time duration, and initial phase of laser pulse are studied. Based on maximizing laser pulse asymmetry, a numerical optimization procedure is presented, which leads to the elimination of rapid fluctuations of gain versus the chirp parameter. Instead, a smooth variation is observed that considerably reduces the accuracy required for experimentally adjusting the chirp parameter.

  5. A table-top x-ray FEL based on a laser wakefield accelerator-undulator system

    SciTech Connect (OSTI)

    Nakajima, K.; Kawakubo, T.; Nakanishi, H.

    1995-12-31

    Ultrahigh-gradient electron acceleration has been confirmed owing to the laser wakefield acceleration mechanism driven by an intense short laser wakefield acceleration mechanism driven by an intense short laser pulse in an underdense plasma. The laser wakefield acceleration makes it possible to build a compact electron linac capable of producing an ultra-short bunched electron beam. While the accelerator is attributed to longitudinal wakefields, transverse wakefields simultaneously generated by a short laser pulse can serve as a plasma undulator with a very short wavelength equal to a half of the plasma wavelength. We propose a new FEL concept for X-rays based on a laser wakefield accelerator-undulator system driven by intense short laser pulses delivered from table-top terawatt lasers. The system is composed of the accelerator stage and the undulator stage in a table-top size. A low energy electron beam is accelerated an bunched into microbunches due to laser wakefields in the accelerator stage. A micro-bunched beam travelling to the opposite direction of driving laser pulses produces coherent X-ray radiation in the undulator stage. A practical configuration and its analyses are presented.

  6. 2008 - 11 | Jefferson Lab

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

    1 Nov 2008 Fri, 2008-11-14 13:00 Jefferson Lab News - Jefferson Lab Lecture to Celebrate 50th Anniversary of the Laser Thu, 2008-11-13 13:00 Jefferson Lab Boasts Virginia's Fastest Computer Fri, 2008-11-07 14:00 NASA Expert Discusses NextGen - the Next Generation Air Transportation System on Nov. 18

  7. National Labs | Department of Energy

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

    National Labs National Labs Enormous Blades for Offshore Energy Enormous Blades for Offshore Energy Designs for the largest wind turbine blades ever were inspired by palm trees. Read more VIDEO: Accelerator on a Chip VIDEO: Accelerator on a Chip Scientists at SLAC are using tiny chips to build a particle accelerator the size of a shoe box. Read more PHOTO GALLERY: 20 Amazing Things the National Labs Have Done PHOTO GALLERY: 20 Amazing Things the National Labs Have Done Check out the top

  8. Spot size dependence of laser accelerated protons in thin multi-ion foils

    SciTech Connect (OSTI)

    Liu, Tung-Chang Shao, Xi; Liu, Chuan-Sheng; Eliasson, Bengt; Wang, Jyhpyng; Chen, Shih-Hung

    2014-06-15

    We present a numerical study of the effect of the laser spot size of a circularly polarized laser beam on the energy of quasi-monoenergetic protons in laser proton acceleration using a thin carbon-hydrogen foil. The used proton acceleration scheme is a combination of laser radiation pressure and shielded Coulomb repulsion due to the carbon ions. We observe that the spot size plays a crucial role in determining the net charge of the electron-shielded carbon ion foil and consequently the efficiency of proton acceleration. Using a laser pulse with fixed input energy and pulse length impinging on a carbon-hydrogen foil, a laser beam with smaller spot sizes can generate higher energy but fewer quasi-monoenergetic protons. We studied the scaling of the proton energy with respect to the laser spot size and obtained an optimal spot size for maximum proton energy flux. Using the optimal spot size, we can generate an 80 MeV quasi-monoenergetic proton beam containing more than 10{sup 8} protons using a laser beam with power 250 TW and energy 10 J and a target of thickness 0.15 wavelength and 49 critical density made of 90% carbon and 10% hydrogen.

  9. 2014 - 04 | Jefferson Lab

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

    4 Apr 2014 Wed, 2014-04-30 10:22 Jefferson Lab Project Team Receives Department of Energy Award Mon, 2014-04-14 09:28 Beam On Target! - CEBAF Accelerator Achieves 12 GeV Commissioning Milestone Fri, 2014-04-04 11:18 Jefferson Lab Gears up for 'Accelerating Discovery' Open House on May 17

  10. 1999 - 06 | Jefferson Lab

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

    6 Jun 1999 Sun, 1999-06-27 00:00 Gizmos, Gadgets & Devices - Oh, My (Daily Press) Fri, 1999-06-25 00:00 Exhibit: High-Energy Lab Tours for Kids (Daily Press) Tue, 1999-06-22 00:00 Jefferson Lab Laser Breakthrough Opens Way for Navy Funding (Daily Press) Tue, 1999-06-22 00:00 Jefferson Lab Plans Open House Saturday, Newport News (Daily Press) Mon, 1999-06-21 00:00 Jefferson Lab Open House (Daily Press) Sun, 1999-06-13 00:00 Jefferson Lab Silences Critics, Earns New Backing for Laser

  11. Relativistic attosecond electron pulses from a free-space laser-acceleration scheme

    SciTech Connect (OSTI)

    Varin, Charles; Piche, Michel

    2006-10-15

    In this paper we describe how relativistic attosecond electron pulses could be produced in free space by ultrafast and ultraintense transverse magnetic (TM) laser beams. Numerical solutions of the time-dependent three-dimensional Maxwell-Lorentz equations reveal that electrons initially at rest at the waist of a multi-TW pulsed TM{sub 01} laser beam can be accelerated to multi-MeV energies. The use of a few-cycle laser beam and a compact initial electron cloud forces the particles to effectively interact with a single half-cycle of the laser field and form a pulse of attosecond duration.

  12. Fission-Fusion: A new reaction mechanism for nuclear astrophysics based on laser-ion acceleration

    SciTech Connect (OSTI)

    Thirolf, P. G.; Gross, M.; Allinger, K.; Bin, J.; Henig, A.; Kiefer, D.; Habs, D.; Ma, W.; Schreiber, J.

    2011-10-28

    We propose to produce neutron-rich nuclei in the range of the astrophysical r-process around the waiting point N = 126 by fissioning a dense laser-accelerated thorium ion bunch in a thorium target (covered by a CH{sub 2} layer), where the light fission fragments of the beam fuse with the light fission fragments of the target. Via the 'hole-boring' mode of laser Radiation Pressure Acceleration using a high-intensity, short pulse laser, very efficiently bunches of {sup 232}Th with solid-state density can be generated from a Th target and a deuterated CD{sub 2} foil, both forming the production target assembly. Laser-accelerated Th ions with about 7 MeV/u will pass through a thin CH{sub 2} layer placed in front of a thicker second Th foil (both forming the reaction target) closely behind the production target and disintegrate into light and heavy fission fragments. In addition, light ions (d,C) from the CD{sub 2} layer of the production target will be accelerated as well, inducing the fission process of {sup 232}Th also in the second Th layer. The laser-accelerated ion bunches with solid-state density, which are about 10{sup 14} times more dense than classically accelerated ion bunches, allow for a high probability that generated fission products can fuse again. The high ion beam density may lead to a strong collective modification of the stopping power, leading to significant range and thus yield enhancement. Using a high-intensity laser as envisaged for the ELI-Nuclear Physics project in Bucharest (ELI-NP), order-of-magnitude estimates promise a fusion yield of about 10{sup 3} ions per laser pulse in the mass range of A = 180-190, thus enabling to approach the r-process waiting point at N = 126.

  13. Multiple self-injection in the acceleration of monoenergetic electrons by a laser wake field

    SciTech Connect (OSTI)

    Oguchi, A.; Takano, K.; Hotta, E.; Zhidkov, A.; Nemoto, K.; Nakajima, K.

    2008-04-15

    Multiple electron self-injection in laser wake-field acceleration is studied via fully relativistic two- and three-dimensional particle-in-cell simulation. The electron density modulation in the laser wake originating from oscillations of the laser pulse waist and relativistic effects can provoke the parametric resonance in the electron fluid momentum. This may result in repetitive trapping of plasma electrons in the acceleration phase of the laser wake: multiple electron self-injection. The maximal energy of the accelerated electrons depends strongly on the total charge of the injected electrons. A low energy spread, less than 1%, for an almost 1 GeV energy electron beam with charge about 10 pC is found numerically in the plasma channel irradiated by a 25 TW laser pulse, while a 200 TW laser pulse produces a few nC beam with only 150 MeV energy. Essentially thermalization of accelerated electrons is also a result of charge loading.

  14. Improved generation of ion fluxes by a long laser pulse using laser-induced cavity pressure acceleration

    SciTech Connect (OSTI)

    Badziak, J.; Parys, P.; Rosi?ski, M.; Krousky, E.; Ullschmied, J.; Torrisi, L.; Dipartimento di Fisica, Universita di Messina, 98166 S. Agata, Messina

    2013-09-16

    Generation of ion fluxes in the laser-induced cavity pressure acceleration (LICPA) scheme is investigated by the time-of-flight method and compared with the one in the conventional laser-planar target interaction scheme. It is shown that the ion current density and intensity of the ion flux produced in the LICPA scheme from CD{sub 2} foil target irradiated by a 0.3-ns laser pulse of intensity ?10{sup 14}10{sup 15} W/cm{sup 2} are by an order of magnitude higher and the mean and maximum ion energies by a factor 45 higher than those for the conventional scheme.

  15. Modeling Laser Wakefield Accelerators in a Lorentz Boosted Frame

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

    Lorentz Boosted Frame VayBoost.gif An image showing the "boosted frame," in which the observer moves at near light speed. The laser pulse is represented in blue and red; the...

  16. Compact X-ray Free Electron Laser from a Laser-plasma Accelerator...

    Office of Scientific and Technical Information (OSTI)

    Sponsoring Org: US DOE Office of Science (DOE SC) Country of Publication: United States Language: English Subject: 43 PARTICLE ACCELERATORS; ACCELERATORS; ELECTRON BEAMS; ...

  17. Science at Jefferson Lab | Jefferson Lab

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

    Science at Jefferson Lab All visible matter in the universe is built of subatomic particles called quarks and gluons. These particles combine to form the protons and neutrons found in the nucleus of the atom. Scientists at Jefferson Lab study these particles and the strong force that binds them together. They do this using the Continuous Electron Beam Accelerator Facility (CEBAF) and the lab's three experimental halls - Halls A, B and C. CEBAF acts like a giant microscope, making it possible for

  18. Jefferson Lab Site Map | Jefferson Lab

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

    Jefferson Lab Site Map Front page Syndicated feed icon Front page of Jefferson Lab Main menu Home About Brochures Contact JLab Director Montage Divisions & Departments Events JLab Video Org Charts Science at JLab Virtual Tour Visiting the Lab Research 12 GeV Accelerator Science Hall A Hall B Hall C Hall D LDRD Low Energy Recirculator Facility Nuclear Physics Radiation Detector & Imaging Recent Experiments SRF Institute Theory Center Users & Visiting Scientists Careers Appraisals

  19. The analytic model of a laser-accelerated plasma target and its stability

    SciTech Connect (OSTI)

    Khudik, V. Yi, S. A.; Siemon, C.; Shvets, G.

    2014-01-15

    A self-consistent kinetic theory of a laser-accelerated plasma target with distributed electron/ion densities is developed. The simplified model assumes that after an initial transition period the bulk of cold ions are uniformly accelerated by the self-consistent electric field generated by hot electrons trapped in combined ponderomotive and electrostatic potentials. Several distinct target regions (non-neutral ion tail, non-neutral electron sheath, and neutral plasma bulk) are identified and analytically described. It is shown analytically that such laser-accelerated finite-thickness target is susceptible to Rayleigh-Taylor (RT) instability. Particle-in-cell simulations of the seeded perturbations of the plasma target reveal that, for ultra-relativistic laser intensities, the growth rate of the RT instability is depressed from the analytic estimates.

  20. The phase-lock dynamics of the laser wakefield acceleration with an intensity-decaying laser pulse

    SciTech Connect (OSTI)

    Li, Wentao; Liu, Jiansheng Wang, Wentao; Zhang, Zhijun; Chen, Qiang; Tian, Ye; Qi, Rong; Yu, Changhai; Wang, Cheng; Li, Ruxin Xu, Zhizhan; Tajima, T.

    2014-03-03

    An electron beam with the maximum energy extending up to 1.8?GeV, much higher than the dephasing limit, is experimentally obtained in the laser wakefield acceleration with the plasma density of 3.5??10{sup 18}?cm{sup ?3}. With particle in cell simulations and theoretical analysis, we find that the laser intensity evolution plays a major role in the enhancement of the electron energy gain. While the bubble length decreases due to the intensity-decay of the laser pulse, the phase of the electron beam in the wakefield can be locked, which contributes to the overcoming of the dephasing. Moreover, the laser intensity evolution is described for the phase-lock acceleration of electrons in the uniform plasma, confirmed with our own simulation. Since the decaying of the intensity is unavoidable in the long distance propagation due to the pump depletion, the energy gain of the high energy laser wakefield accelerator can be greatly enhanced if the current process is exploited.

  1. Laser Wakefield Acceleration: Structural and Dynamic Studies. Final Technical Report ER40954

    SciTech Connect (OSTI)

    Downer, Michael C.

    2014-12-19

    Particle accelerators enable scientists to study the fundamental structure of the universe, but have become the largest and most expensive of scientific instruments. In this project, we advanced the science and technology of laser-plasma accelerators, which are thousands of times smaller and less expensive than their conventional counterparts. In a laser-plasma accelerator, a powerful laser pulse exerts light pressure on an ionized gas, or plasma, thereby driving an electron density wave, which resembles the wake behind a boat. Electrostatic fields within this plasma wake reach tens of billions of volts per meter, fields far stronger than ordinary non-plasma matter (such as the matter that a conventional accelerator is made of) can withstand. Under the right conditions, stray electrons from the surrounding plasma become trapped within these “wake-fields”, surf them, and acquire energy much faster than is possible in a conventional accelerator. Laser-plasma accelerators thus might herald a new generation of compact, low-cost accelerators for future particle physics, x-ray and medical research. In this project, we made two major advances in the science of laser-plasma accelerators. The first of these was to accelerate electrons beyond 1 gigaelectronvolt (1 GeV) for the first time. In experimental results reported in Nature Communications in 2013, about 1 billion electrons were captured from a tenuous plasma (about 1/100 of atmosphere density) and accelerated to 2 GeV within about one inch, while maintaining less than 5% energy spread, and spreading out less than ½ milliradian (i.e. ½ millimeter per meter of travel). Low energy spread and high beam collimation are important for applications of accelerators as coherent x-ray sources or particle colliders. This advance was made possible by exploiting unique properties of the Texas Petawatt Laser, a powerful laser at the University of Texas at Austin that produces pulses of 150 femtoseconds (1 femtosecond is 10

  2. Laser polishing of niobium for superconducting radio-frequency accelerator applications

    SciTech Connect (OSTI)

    Zhao, Liang; Klopf, John M.; Reece, Charles E.; Kelley, Michael J.

    2014-08-01

    Interior surfaces of niobium cavities used in superconducting radio frequency accelerators are now obtained by buffered chemical polish and/or electropolish. Laser polishing is a potential alternative, having advantages of speed, freedom from noxious chemistry and availability of in-process inspection. We studied the influence of the laser power density and laser beam raster rate on the surface topography. These two factors need to be combined carefully to smooth the surface without damage. Computational modeling was used to estimate the surface temperature and gain insight into the mechanism of laser polishing. Power spectral density analysis of surface topography measurements shows that laser polishing can produce smooth topography similar to that obtained by electropolish. This is a necessary first step toward introducing laser polishing as an alternative to the currently practiced chemical polishing.

  3. Dual effects of stochastic heating on electron injection in laser wakefield acceleration

    SciTech Connect (OSTI)

    Deng, Z. G.; Wang, X. G.; Yang, L.; Zhou, C. T.; Yu, M. Y.; Ying, H. P.

    2014-08-15

    Electron injection into the wakefield of an intense short laser pulse by a weaker laser pulse propagating in the opposite direction is reconsidered using two-dimensional (2D) particle-in-cell simulations as well as analytical modeling. It is found that for linearly polarized lasers the injection efficiency and the quality of the wakefield accelerated electrons increase with the intensity of the injection laser only up to a certain level, and then decreases. Theory and simulation tracking test electrons originally in the beat region of the two laser pulses show that the reduction of the injection efficiency at high injection-laser intensities is caused by stochastic overheating of the affected electrons.

  4. Experimental Research on the Laser Cyclotron Auto-Resonance Accelerator “LACARA”

    SciTech Connect (OSTI)

    Marshall, T C

    2008-11-11

    The Laser Cyclotron Auto-Resonant Accelerator LACARA has successfully operated this year. Results are summarized, an interpretation of operating data is provided in the body of the report, and recommendations are made how the experiment should be carried forward. The Appendix A contains a description of the LACARA apparatus, currently installed at the Accelerator Test Facility, Brookhaven National Laboratory. This report summarizes the project, extending over three grant-years.

  5. Electron acceleration by linearly polarized twisted laser pulse with narrow divergence

    SciTech Connect (OSTI)

    Vaziri, Mohammad Sohaily, Sozha; Golshani, Mojtaba; Bahrampour, Alireza

    2015-03-15

    We numerically investigate the vacuum electron acceleration by a high-intensity linearly polarized twisted laser pulse. It is shown that the inherent spiral structure of a Laguerre-Gaussian laser pulse leads to improvement in trapping and acceleration of an electron to energies of the order of GeV in the off-axis case. Also, it is demonstrated that by employing a proper choice of initial injection parameters, the high-energetic electrons with very small scattering angles can be produced.

  6. The LACARA Vacuum Laser Accelerator Experiment: Beam Positioning and Alignment in a Strong Magnetic Field

    SciTech Connect (OSTI)

    Shchelkunov, Sergey V.; Marshall, T. C.; Hirshfield, J. L.; Wang, Changbiao; LaPointe, M. A.

    2006-11-27

    LACARA (laser cyclotron auto-resonance accelerator) is a vacuum laser accelerator of electrons that is under construction at the Accelerator Test Facility (ATF), Brookhaven National Laboratory. It is expected that the experiment will be assembled by September 2006; this paper presents progress towards this goal. According to numerical studies, as an electron bunch moves along the LACARA solenoidal magnetic field ({approx}5.2 T, length {approx}1 m), it will be accelerated from 50 to {approx}75 MeV by interacting with a 0.8 TW Gaussian-mode circularly polarized optical pulse provided by the ATF CO2 10.6{mu}m laser system. The LACARA laser transport optics must handle 10 J and be capable of forming a Gaussian beam inside the solenoid with a 1.4 mm waist and a Rayleigh range of 60 cm. The electron optics must transport a bunch having input emittance of 0.015 mm-mrad and 100 {mu}m waist through the magnet. Precision alignment between the electron beam and the solenoid magnetic axis is required, and a method to achieve this is described in detail. Emittance- filtering may be necessary to yield an accelerated bunch having a narrow ({approx}1%) energy-spread.

  7. Helium-3 and Helium-4 acceleration by high power laser pulses for hadron therapy

    SciTech Connect (OSTI)

    Bulanov, S. S.; Esarey, E.; Schroeder, C. B.; Leemans, W. P.; Bulanov, S. V.; Margarone, D.; Korn, G.; Haberer, T.

    2015-06-24

    The laser driven acceleration of ions is considered a promising candidate for an ion source for hadron therapy of oncological diseases. Though proton and carbon ion sources are conventionally used for therapy, other light ions can also be utilized. Whereas carbon ions require 400 MeV per nucleon to reach the same penetration depth as 250 MeV protons, helium ions require only 250 MeV per nucleon, which is the lowest energy per nucleon among the light ions. This fact along with the larger biological damage to cancer cells achieved by helium ions, than that by protons, makes this species an interesting candidate for the laser driven ion source. Two mechanisms (Magnetic Vortex Acceleration and hole-boring Radiation Pressure Acceleration) of PW-class laser driven ion acceleration from liquid and gaseous helium targets are studied with the goal of producing 250 MeV per nucleon helium ion beams that meet the hadron therapy requirements. We show that He3 ions, having almost the same penetration depth as He4 with the same energy per nucleon, require less laser power to be accelerated to the required energy for the hadron therapy.

  8. 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

  9. 2004 - 07 | Jefferson Lab

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

    7 Jul 2004 Sat, 2004-07-31 00:00 Jefferson Lab beats record for laser (Daily Press) Sat, 2004-07-31 00:00 Supported Free Electron Laser Most Powerful Tunable Laser in World (Office of Naval Research) Fri, 2004-07-30 00:00 'Star Wars' Defense? Laser beams up a record (Richmond Times-Dispatch

  10. Laser acceleration of protons using multi-ion plasma gaseous targets

    SciTech Connect (OSTI)

    Liu, Tung -Chang; Shao, Xi; Liu, Chuan -Sheng; Eliasson, Bengt; W. T. Hill, III; Wang, Jyhpyng; Chen, Shih -Hung

    2015-02-01

    We present a theoretical and numerical study of a novel acceleration scheme by applying a combination of laser radiation pressure and shielded Coulomb repulsion in laser acceleration of protons in multi-species gaseous targets. By using a circularly polarized CO₂ laser pulse with a wavelength of 10 μm—much greater than that of a Ti: Sapphire laser—the critical density is significantly reduced, and a high-pressure gaseous target can be used to achieve an overdense plasma. This gives us a larger degree of freedom in selecting the target compounds or mixtures, as well as their density and thickness profiles. By impinging such a laser beam on a carbon–hydrogen target, the gaseous target is first compressed and accelerated by radiation pressure until the electron layer disrupts, after which the protons are further accelerated by the electron-shielded carbon ion layer. An 80 MeV quasi-monoenergetic proton beam can be generated using a half-sine shaped laser beam with a peak power of 70 TW and a pulse duration of 150 wave periods.

  11. Laser acceleration of protons using multi-ion plasma gaseous targets

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

    Liu, Tung -Chang; Shao, Xi; Liu, Chuan -Sheng; Eliasson, Bengt; W. T. Hill, III; Wang, Jyhpyng; Chen, Shih -Hung

    2015-02-01

    We present a theoretical and numerical study of a novel acceleration scheme by applying a combination of laser radiation pressure and shielded Coulomb repulsion in laser acceleration of protons in multi-species gaseous targets. By using a circularly polarized CO₂ laser pulse with a wavelength of 10 μm—much greater than that of a Ti: Sapphire laser—the critical density is significantly reduced, and a high-pressure gaseous target can be used to achieve an overdense plasma. This gives us a larger degree of freedom in selecting the target compounds or mixtures, as well as their density and thickness profiles. By impinging such amore » laser beam on a carbon–hydrogen target, the gaseous target is first compressed and accelerated by radiation pressure until the electron layer disrupts, after which the protons are further accelerated by the electron-shielded carbon ion layer. An 80 MeV quasi-monoenergetic proton beam can be generated using a half-sine shaped laser beam with a peak power of 70 TW and a pulse duration of 150 wave periods.« less

  12. Development of the C{sup 6+} laser ablation ion source for the KEK digital accelerator

    SciTech Connect (OSTI)

    Munemoto, Naoya; High Energy Accelerator Research Organization , 1-1 Oho, Tsukuba, Ibaraki 305-0801 ; Takayama, Ken; High Energy Accelerator Research Organization , 1-1 Oho, Tsukuba, Ibaraki 305-0801; Graduate University for Advanced Studies, Hayama, Miura, Kanagawa 240-8550 ; Takano, Susumu; Okamura, Masahiro; RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198 ; Kumaki, Masahumi; Waseda University, 3-4-1 Okubo, Shinjuku, Tokyo 169-0072

    2014-02-15

    A laser ion source that provides a fully ionized carbon ion beam is under joint development at the High Energy Accelerator Research Organization and Brookhaven National Laboratory. Long-pulse (6 ns) and short-pulse (500 ps) laser systems were tested by using them to irradiate a graphite target. Notable differences between the systems were observed in these experiments. Preliminary experimental results, such as the charge-state spectrum, beam intensity, and stability, are discussed.

  13. SRF Institute | Jefferson Lab

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

    SRF Institute Jefferson Lab is recognized as a world leader in accelerator science. This expertise comes from the planning, building, maintaining and operating of the Continuous Electron Beam Accelerator Facility (CEBAF) - the lab's particle accelerator. CEBAF is based on superconducting radiofrequency (SRF) technology and produces a stream of charged electrons that scientists use to probe the nucleus of the atom. CEBAF was the first large-scale application of SRF technology in the U.S., and it

  14. Tours | Jefferson Lab

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

    Tours The facilities at Jefferson Lab are used to carry out research 24 hours a day, seven days a week. Tours of the accelerator, experimental halls and Low Energy Recirculator Facility (LERF) are based upon availability of those areas. When the accelerator is shut down for maintenance, tours may be scheduled if they do not interfere with planned work. Tours of the Superconducting Radiofrequency (SRF) Institute in the Test Lab, the Machine Control Center, and windshield tours of the accelerator

  15. Induction accelerators and free-electron lasers at LLNL: Beam Research Program

    SciTech Connect (OSTI)

    Briggs, R.J.

    1989-02-15

    Linear induction accelerators have been developed to produce pulses of charged particles at voltages exceeding the capabilities of single-stage, diode-type accelerators and at currents too high rf accelerators. In principle, one can accelerate charged particles to arbitrarily high voltages using a multistage induction machine. The advent of magnetic pulse power systems makes sustained operation at high repetition rates practical, and high-average-power capability is very likely to open up many new applications of induction machines. In Part A of this paper, we survey the US induction linac technology, emphasizing electron machines. We also give a simplified description of how induction machines couple energy to the electron beam to illustrate many general issues that designers of high-brightness and high-average-power induction linacs must consider. We give an example of the application of induction accelerator technology to the relativistic klystron, a power source for high-gradient accelerators. In Part B we address the application of LIAs to free-electron lasers. The multikiloampere peak currents available from linear induction accelerators make high-gain, free-electron laser amplifier configurations feasible. High extraction efficiencies in a single mass of the electron beam are possible if the wiggler parameters are appropriately ''tapered'', as recently demonstrated at millimeter wavelengths on the 4-MeV ELF facility. Key issues involved in extending the technology to shorter wavelengths and higher average powers are described. Current FEL experiments at LLNL are discussed. 5 refs., 16 figs.

  16. Laser ion acceleration by using the dynamic motion of a target

    SciTech Connect (OSTI)

    Morita, Toshimasa

    2013-09-15

    Proton acceleration by using a 620 TW, 18 J laser pulse of peak intensity of 5×10{sup 21} W/cm{sup 2} irradiating a disk target is examined using three-dimensional particle-in-cell simulations. It is shown that protons are accelerated efficiently to high energy for a “light” material in the first layer of a double-layer target, because a strongly inhomogeneous expansion of the first layer occurs by a Coulomb explosion within such a material. Moreover, a large movement of the first layer for the accelerated protons is produced by radiation-pressure-dominant acceleration. A time-varying electric potential produced by this expanding and moving ion cloud accelerates protons effectively. In addition, using the best material for the target, one can generate a proton beam with an energy of 200 MeV and an energy spread of 2%.

  17. Jefferson Lab Employee Tour | Jefferson Lab

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

    Employee Tour Jefferson Lab Employee Tour Set for Thursday, Aug. 11 Have you ever wanted to see the experimental halls and the accelerator tunnel, but have not had the opportunity to do so? Jefferson Lab employees, users, students and contractors will have that opportunity on Thursday, Aug. 11, 1-3:30 p.m. The tour will include stops at the Test Lab, the Machine Control Center, an accelerator, and Experimental Halls C and D. The visit to each facility will be guided by subject-matter experts.

  18. Demonstration of passive plasma lensing of a laser wakefield accelerated electron bunch

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

    Kuschel, S.; Hollatz, D.; Heinemann, T.; Karger, O.; Schwab, M. B.; Ullmann, D.; Knetsch, A.; Seidel, A.; Rodel, C.; Yeung, M.; et al

    2016-07-20

    We report on the first demonstration of passive all-optical plasma lensing using a two-stage setup. An intense femtosecond laser accelerates electrons in a laser wakefield accelerator (LWFA) to 100 MeV over millimeter length scales. By adding a second gas target behind the initial LWFA stage we introduce a robust and independently tunable plasma lens. We observe a density dependent reduction of the LWFA electron beam divergence from an initial value of 2.3 mrad, down to 1.4 mrad (rms), when the plasma lens is in operation. Such a plasma lens provides a simple and compact approach for divergence reduction well matchedmore » to the mm-scale length of the LWFA accelerator. The focusing forces are provided solely by the plasma and driven by the bunch itself only, making this a highly useful and conceptually new approach to electron beam focusing. Possible applications of this lens are not limited to laser plasma accelerators. Since no active driver is needed the passive plasma lens is also suited for high repetition rate focusing of electron bunches. As a result, its understanding is also required for modeling the evolution of the driving particle bunch in particle driven wake field acceleration.« less

  19. Advanced Laser Particle Accelerator Development at LANL: From Fast Ignition to Radiation Oncology

    SciTech Connect (OSTI)

    Flippo, K. A.; Offermann, D. T.; Cobble, J. A.; Schmitt, M. J.; Gautier, D. C.; Kwan, T. J.; Montgomery, D. S.; Gaillard, S. A.; Kluge, T.; Bussmann, M.; Cowan, T. E.; Bartal, T.; Beg, F. N.; Gall, B.; Kovaleski, S.; Geissel, M.; Schollmeier, M.; Korgan, G.; Malekos, S.; Lockard, T.

    2010-11-04

    Laser-plasma accelerated ion and electron beam sources are an emerging field with vast prospects, and promise many superior applications in a variety of fields such as hadron cancer therapy, compact radioisotope generation, table-top nuclear physics, laboratory astrophysics, nuclear forensics, waste transmutation, Special Nuclear Material (SNM) detection, and inertial fusion energy. LANL is engaged in several projects seeking to develop compact high-current and high-energy ion and electron sources. We are especially interested in two specific applications: ion fast ignition/capsule perturbation and radiation oncology. Laser-to-beam conversion efficiencies of over 10% are needed for practical applications, and we have already shown inherent efficiencies of >5% from flat foils, on Trident using only a 5th of the intensity and energy of the Nova Petawatt laser. With clever target designs, like structured curved cone targets, we have also been able to achieve major ion energy gains, leading to the highest energy laser-accelerated proton beams in the world [3]. These new target designs promise to help usher in the next generation of particle sources realizing the potential of laser-accelerated beams.

  20. Controlling the spectrum of x-rays generated in a laser-plasma accelerator by tailoring the laser wavefront

    SciTech Connect (OSTI)

    Mangles, S. P. D.; Kneip, S.; Dover, N. P.; Najmudin, Z.; Schreiber, J.; Genoud, G.; Burza, M.; Kamperidis, C.; Persson, A.; Wahlstroem, C.-G.; Cassou, K.; Cros, B.; Wojda, F.

    2009-11-02

    By tailoring the wavefront of the laser pulse used in a laser-wakefield accelerator, we show that the properties of the x-rays produced due to the electron beam's betatron oscillations in the plasma can be controlled. By creating a wavefront with coma, we find that the critical energy of the synchrotronlike x-ray spectrum can be significantly increased. The coma does not substantially change the energy of the electron beam, but does increase its divergence and produces an energy-dependent exit angle, indicating that changes in the x-ray spectrum are due to an increase in the electron beam's oscillation amplitude within the wakefield.

  1. Enhancement of x-rays generated by a guided laser wakefield accelerator inside capillary tubes

    SciTech Connect (OSTI)

    Ju, J.; Doepp, A.; Cassou, K.; Neveu, O.; Cros, B.; Svensson, K.; Genoud, G.; Wojda, F.; Burza, M.; Persson, A.; Lundh, O.; Wahlstroem, C.-G.; Ferrari, H. E.

    2012-05-07

    Electrons accelerated in the nonlinear regime in a laser wakefield accelerator experience transverse oscillations inside the plasma cavity, giving rise to ultra-short pulsed x-rays, also called the betatron radiation. We show that the fluence of x-ray can be enhanced by more than one order of magnitude when the laser is guided by a 10 mm long capillary tube instead of interacting with a 2 mm gas jet. X-rays with a synchrotron-like spectrum and associated critical energy {approx}5 keV, with a peak brightness of {approx}1x10{sup 21} ph/s/mm{sup 2}/mrad{sup 2}/0.1%BW, were achieved by employing 16 TW laser pulses.

  2. Laser-seeded modulation instability in a proton driver plasma wakefield accelerator

    SciTech Connect (OSTI)

    Siemon, Carl; Khudik, Vladimir; Austin Yi, S.; Shvets, Gennady; Pukhov, Alexander

    2013-10-15

    A new method for initiating the modulation instability (MI) of a proton beam in a proton driver plasma wakefield accelerator using a short laser pulse preceding the beam is presented. A diffracting laser pulse is used to produce a plasma wave that provides a seeding modulation of the proton bunch with the period equal to that of the plasma wave. Using the envelope description of the proton beam, this method of seeding the MI is analytically compared with the earlier suggested seeding technique that involves an abrupt truncation of the proton bunch. The full kinetic simulation of a realistic proton bunch is used to validate the analytic results. It is further used to demonstrate that a plasma density ramp placed in the early stages of the laser-seeded MI leads to its stabilization, resulting in sustained accelerating electric fields (of order several hundred MV/m) over long propagation distances (∼100–1000 m)

  3. 2008 | Jefferson Lab

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

    Nov 2008 Fri, 2008-11-14 13:00 Jefferson Lab News - Jefferson Lab Lecture to Celebrate 50th Anniversary of the Laser Thu, 2008-11-13 13:00 Jefferson Lab Boasts Virginia's Fastest Computer Fri, 2008-11-07 14:00 NASA Expert Discusses NextGen - the Next Generation Air Transportation System on Nov. 18 Oct 2008 Fri, 2008-10-24 15:00 Jefferson Lab electron beam charges up Mon, 2008-10-06 15:00 Jefferson Lab, ODU team up for center Sep 2008 Fri, 2008-09-19 15:00 ODU establishes a Center for

  4. Tuning laser produced electron-positron jets for lab-astrophysics experiment

    SciTech Connect (OSTI)

    Chen, Hui; Fiuza, F.; Hazi, A.; Kemp, A.; Link, A.; Pollock, B.; Marley, E.; Nagel, S. R.; Park, J.; Schneider, M.; Shepherd, R.; Tommasini, R.; Wilks, S. C.; Williams, G. J.; Barnak, D.; Chang, P-Y.; Fiksel, G.; Glebov, V.; Meyerhofer, D. D.; Myatt, J. F.; Stoeckel, C.; Nakai, M.; Arikawa, Y.; Azechi, H.; Fujioka, S.; Hosoda, H.; Kojima, S.; Miyanga, N.; Morita, T.; Moritaka, T.; Nagai, T.; Namimoto, T.; Nishimura, H.; Ozaki, T.; Sakawa, Y.; Takabe, H.; Zhang, Z.

    2015-02-23

    This paper reviews the experiments on the laser produced electron-positron jets using large laser facilities worldwide. The goal of the experiments was to optimize the parameter of the pair jets for their potential applications in laboratory-astrophysical experiment. Results on tuning the pair jet’s energy, number, emittance and magnetic collimation will be presented.

  5. 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

  6. 1.1 Simulations of a Free-Electron Laser Oscillator at Jefferson Lab Lasing in the Vacuum Ultraviolet

    SciTech Connect (OSTI)

    Shinn, Michelle D.; Benson, Stephen V.

    2013-04-01

    The UVFEL at Jefferson Lab has provided a 10 eV photon beam for users by outcoupling the coherent third harmonic of the UVFEL operated at 372 nm. This can provide up to tens of milliwatts of power in the VUV. Operation of the FEL at the fundamental might enhance this power by up to a factor of 1000. With minor upgrades to the accelerator now underway and a new undulator proposed by Calabazas Creek Research, Inc. we show that we can lase in the fundamental at 124 nm. The predicted output is higher by four orders of magnitude on an average power basis and six orders of magnitude on a peak fluence basis than the Advanced Light Source at Lawrence Berkeley National Laboratory.

  7. Increased efficiency of ion acceleration by using femtosecond laser pulses at higher harmonic frequency

    SciTech Connect (OSTI)

    Psikal, J.; Klimo, O.; Weber, S.; Margarone, D.

    2014-07-15

    The influence of laser frequency on laser-driven ion acceleration is investigated by means of two-dimensional particle-in-cell simulations. When ultrashort intense laser pulse at higher harmonic frequency irradiates a thin solid foil, the target may become re lativistically transparent for significantly lower laser pulse intensity compared with irradiation at fundamental laser frequency. The relativistically induced transparency results in an enhanced heating of hot electrons as well as increased maximum energies of accelerated ions and their numbers. Our simulation results have shown the increase in maximum proton energy and increase in the number of high-energy protons by a factor of 2 after the interaction of an ultrashort laser pulse of maximum intensity 7 × 10{sup 21 }W/cm{sup 2} with a fully ionized plastic foil of realistic density and of optimal thickness between 100 nm and 200 nm when switching from the fundamental frequency to the third harmonics.

  8. Lasers Used to Make First Boron-Nitride Nanotube Yarn | Jefferson Lab

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

    of Energy Laser-Firing ChemCam Vital to Curiosity Rover's Tour of Mars Laser-Firing ChemCam Vital to Curiosity Rover's Tour of Mars March 6, 2014 - 2:00pm Addthis 1 of 4 Jean-Luc Lacour, an engineer at CEA France, created this artistic rendering of the ChemCam back in 2004. Looking at rocks and soil from a distance, ChemCam fires a high-powered laser to analyze the composition of vaporized materials from areas smaller than 1 millimeter on the surface of Martian rocks and soil as part of

  9. 1999 - 07 | Jefferson Lab

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

    7 Jul 1999 Thu, 1999-07-22 15:00 Henry Whitehead - From Transistors to Lasers Tue, 1999-07-20 00:00 Tunable Laser Reaches Record Power Level Sun, 1999-07-18 00:00 Experts at Newport News Lab Develop Powerful New Laser (Richmond-Times Dispatch) Sat, 1999-07-17 00:00 Newport News Lab Zaps Record for Laser Power (Virginian Pilot) Sat, 1999-07-17 00:00 Jefferson Laser Team Meets Goal (Daily Press) Mon, 1999-07-05 00:00 JLab Preps for Quark Search (Virginia Business Observer

  10. 2010 | Jefferson Lab

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

    Dec 2010 Wed, 2010-12-29 00:00 Laser Makes New Shade of Ultraviolet (COSMIC Log on MSNBC.com) Mon, 2010-12-27 00:00 Laser Tricks: Making a New Color (Discovery News) Thu, 2010-12-23 00:00 10eV Photons of UV Laser Light Delivered (Photonics) Wed, 2010-12-22 00:00 Laser Twinkles in Rare Color (Science Daily) Tue, 2010-12-21 00:00 Jefferson Lab Laser Twinkles in Rare Color (PhysOrg) Nov 2010 Tue, 2010-11-23 00:00 Jefferson Lab leads the way toward clean cavities (Cryogenic Society of America,

  11. "Science is Cool" at Jefferson Lab's Open House, Saturday, April 21 |

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

    Jefferson Lab "Science is Cool" at Jefferson Lab's Open House, Saturday, April 21 "Science is Cool" at Jefferson Lab's Open House, Saturday, April 21 April 21, 2001 "Science is Cool" at Jefferson Lab's Open House, set for Saturday, April 21, 10 a.m. - 4 p.m. rain or shine. The event is free and will feature over 200 staff ready to share with visitors: the electron accelerator, an experimental hall, the Free Electron Laser, a variety of hands-on exhibits

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

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

    JLab FEL Wins R&D 100 Award JLab FEL Wins R&D 100 Award July 26, 2005 Researchers and engineers at the Department of Energy's (DOE) Thomas Jefferson National Accelerator Facility (Jefferson Lab) have been awarded an R&D 100 Award, R&D Magazine's picks for the 100 most technologically significant new products of 2005. This is Jefferson Lab's second R&D 100 award. The 2005 award goes to: The Tunable Energy Recovered High Power Infrared Free-Electron Laser, lead by a team of

  13. 2014 - 09 | Jefferson Lab

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

    9 Sep 2014 Thu, 2014-09-25 13:51 Governor to Join Jefferson Lab in Celebrating Completion of Accelerator Upgrade Construction Mon, 2014-09-22 17:03 View TEDxCERN in Jefferson Lab Auditorium on Sept. 24 Mon, 2014-09-22 16:58 Studying the Building Blocks of Matter: Public Talk Planned for Oct. 7 at Jefferson Lab

  14. Compact x-ray free electron laser from a laser-plasma accelerator...

    Office of Scientific and Technical Information (OSTI)

    Sponsoring Org: USDOE Office of Science (SC) Country of Publication: United States Language: English Subject: 43 PARTICLE ACCELERATORS Word Cloud More Like This Full Text preview ...

  15. Intrinsic beam emittance of laser-accelerated electrons measured by x-ray spectroscopic imaging

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

    Golovin, G.; Banerjee, S.; Liu, C.; Chen, S.; Zhang, J.; Zhao, B.; Zhang, P.; Veale, M.; Wilson, M.; Seller, P.; et al

    2016-04-19

    Here, the recent combination of ultra-intense lasers and laser-accelerated electron beams is enabling the development of a new generation of compact x-ray light sources, the coherence of which depends directly on electron beam emittance. Although the emittance of accelerated electron beams can be low, it can grow due to the effects of space charge during free-space propagation. Direct experimental measurement of this important property is complicated by micron-scale beam sizes, and the presence of intense fields at the location where space charge acts. Reported here is a novel, non-destructive, single-shot method that overcame this problem. It employed an intense lasermore » probe pulse, and spectroscopic imaging of the inverse-Compton scattered x-rays, allowing measurement of an ultra-low value for the normalized transverse emittance, 0.15 (±0.06) π mm mrad, as well as study of its subsequent growth upon exiting the accelerator. The technique and results are critical for designing multi-stage laser-wakefield accelerators, and generating high-brightness, spatially coherent x-rays.« less

  16. Advanced laser particle accelerator development at LANL: from fast ignition to radiation oncology

    SciTech Connect (OSTI)

    Flippo, Kirk A; Gaillard, Sandrine A; Offermann, D T; Cobble, J A; Schmitt, M J; Gautier, D C; Kwan, T J T; Montgomery, D S; Kluge, Thomas; Bussmann, Micheal; Bartal, T; Beg, F N; Gall, B; Geissel, M; Korgan, G; Kovaleski, S; Lockard, T; Malekos, S; Schollmeier, M; Sentoku, Y; Cowan, T E

    2010-01-01

    Laser-plasma accelerated ion and electron beam sources are an emerging field with vast prospects, and promise many superior applications in a variety of fields such as hadron cancer therapy, compact radioisotope generation, table-top nuclear physics, laboratory astrophysics, nuclear forensics, waste transmutation, SN M detection, and inertial fusion energy. LANL is engaged in several projects seeking to develop compact high current and high energy ion and electron sources. We are especially interested in two specific applications: ion fast ignition/capsule perturbation and radiation oncology in conjunction with our partners at the ForschungsZentrum Dresden-Rossendorf (FZD). Laser-to-beam conversion efficiencies of over 10% are needed for practical applications, and we have already shown inherent etliciencies of >5% from flat foils, on Trident using only a 5th of the intensity and energy of the Nova Petawatt. With clever target designs, like structured curved cone targets, we have also been able to achieve major ion energy gains, leading to the highest energy laser-accelerated proton beams in the world. These new target designs promise to help usher in the next generation of particle sources realizing the potential of laser-accelerated beams.

  17. First experimental results of the BNL inverse free electron laser accelerator

    SciTech Connect (OSTI)

    Steenbergen, A. van; Gallardo, J.; Babzien, M.; Skaritka, J.; Wang, X.J.; Sandweiss, J.; Fang, J.M.; Qiu, X.

    1996-10-01

    A 40 MeV electron beam, using the inverse3e free-electron laser interaction, has been accelerated by {Delta}E/E = 2.5% over a distance of 0.47 m. The electrons interact with a 1--2 GW CO{sub 2} laser beam bounded by a 2.8 mm ID sapphire circular waveguide in the presence of a tapered wiggler with Bmax {approx} 1 T and a period 2.89 cm {le} {lambda}{sub w} {le} 3.14 cm. The experimental results of {Delta}E/E as a function of electron energy E, peak magnetic field Bw and laser power W{sub 1} compare well with analytical and 1-D numerical simulations and permit scaling to higher laser power and electron energy.

  18. 2015 | Jefferson Lab

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

    Dec 2015 Mon, 2015-12-21 14:18 Jefferson Lab Accelerator Delivers Its First 12 GeV Electrons Wed, 2015-12-02 15:11 Jefferson Lab to Test its Tornado Warning Siren at 10:30 a.m. on ...

  19. 2015 - 12 | Jefferson Lab

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

    2 Dec 2015 Mon, 2015-12-21 14:18 Jefferson Lab Accelerator Delivers Its First 12 GeV Electrons Wed, 2015-12-02 15:11 Jefferson Lab to Test its Tornado Warning Siren at 10:30 a.m. on Friday, Dec. 4

  20. Jefferson Lab Leadership Team

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

    The Leadership Team is the highest level decision making body at Jefferson Lab. It defines policies and strategic direction for scientific programs, laboratory operations and stakeholder relationships. Hugh Montgomery , Director of Jefferson Lab Rhonda Barbosa, Human Resources Manager Amber Boehnlein, Chief Information Officer, Information Technology Division Rolf Ent, Associate Director, Experimental Nuclear Physics Andrew Hutton, Associate Director for the Accelerator Division Mary Logue,

  1. 2005 - 05 | Jefferson Lab

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

    5 May 2005 Wed, 2005-05-18 17:50 Jefferson Lab Builds First Single Crystal Single Cell Accelerating Cavity Mon, 2005-05-02 14:00 Governor's Distinguished CEBAF Professorship Awarded to JLab Chief Scientist

  2. 2010 - 03 | Jefferson Lab

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

    - 12:00am May 3 Abstract for ColloquiumPublic Lecture on May 11 at Jefferson Lab titled: Accelerator Driven System (ADS) in Support of Sustainable Nuclear Power Program in India....

  3. Experimental validation of a radio frequency photogun as external electron injector for a laser wakefield accelerator

    SciTech Connect (OSTI)

    Stragier, X. F. D.; Luiten, O. J.; Geer, S. B. van der; Wiel, M. J. van der; Brussaard, G. J. H.

    2011-07-15

    A purpose-built RF-photogun as external electron injector for a laser wakefield accelerator has been thoroughly tested. Different properties of the RF-photogun have been measured such as energy, energy spread and transverse emittance. The focus of this study is the investigation of the smallest possible focus spot and focus stability at the entrance of the plasma channel. For an electron bunch with 10 pC charge and 3.7 MeV kinetic energy, the energy spread was 0.5% with a shot-to-shot stability of 0.05%. After focusing the bunch by a pulsed solenoid lens at 140 mm from the middle of the lens, the focal spot was 40 {mu}m with a shot-to-shot stability of 5 {mu}m. Higher charge leads to higher energy spread and to a larger spot size, due to space charge effects. All properties were found to be close to design values. Given the limited energy of 3.7 MeV, the properties are sufficient for this gun to serve as injector for one particular version of laser wakefield acceleration, i.e., injection ahead of the laser pulse. These measured electron bunch properties were then used as input parameters for simulations of electron bunch injection in a laser wakefield accelerator. The arrival time jitter was deduced from measurements of the energy fluctuation, in combination with earlier measurements using THz coherent transition radiation, and is around 150 fs in the present setup. The bunch length in the focus, simulated using particle tracking, depends on the accelerated charge and goes from 100 fs at 0.1 pC to 1 ps at 50 pC. When simulating the injection of the 3.7 MeV electron bunch of 10 pC in front of a 25 TW laser pulse with a waist of 30 {mu}m in a plasma with a density of 0.7 x 10{sup 24} m{sup -3}, the maximum accelerated charge was found to be 1.2 pC with a kinetic energy of {approx}900 MeV and an energy spread of {approx}5%. The experiments combined with the simulations show the feasibility of external injection and give a prediction of the output parameters that can

  4. Accelerating Into the Future: From 0 to GeV in a Few Centimeters (LBNL Summer Lecture Series)

    ScienceCinema (OSTI)

    Leemans, Wim [LOASIS Program, AFRD

    2009-09-01

    July 8, 2008 Berkeley Lab lecture: By exciting electric fields in plasma-based waveguides, lasers accelerate electrons in a fraction of the distance conventional accelerators require. The Accelerator and Fusion Research Division's LOASIS program, headed by Wim Leemans, has used 40-trillion-watt laser pulses to deliver billion-electron-volt (1 GeV) electron beams within centimeters. Leemans looks ahead to BELLA, 10-GeV accelerating modules that could power a future linear collider.

  5. Measuring the angular dependence of betatron x-ray spectra in a laser-wakefield accelerator

    SciTech Connect (OSTI)

    Albert, F.; Pollock, B. B.; Shaw, J. L.; Marsh, K. A.; Ralph, J. E.; Chen, Y. -H.; Alessi, D.; Pak, A.; Clayton, C. E.; Glenzer, S. H.; Joshi, C.

    2014-07-22

    This paper presents a new technique to measure the angular dependence of betatron x-ray spectra in a laser-wakefield accelerator. Measurements are performed with a stacked image plates spectrometer, capable of detecting broadband x-ray radiation up to 1 MeV. It can provide measurements of the betatron x-ray spectrum at any angle of observation (within a 40 mrad cone) and of the beam profile. A detailed description of our data analysis is given, along with comparison for several shots. As a result, these measurements provide useful information on the dynamics of the electrons are they are accelerated and wiggled by the wakefield.

  6. Spectral properties of laser-accelerated mid-Z MeV/u ion beams

    SciTech Connect (OSTI)

    Hegelich, B.M.; Albright, B.; Cobble, J.; Gautier, C.; Johnson, R.; Letzring, S.; Fernandez, J.C. [Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States); Audebert, P.; Fuchs, J. [Laboratoire pour l'Utilisation des Lasers Intenses, Ecole Polytechnique, 91128 Palaiseau (France); Blazevic, A.; Brambrink, E.; Geissel, M.; Roth, M. [Technische Universitaet Darmstadt, 64289 Darmstadt (Germany); Cowan, T.; Kemp, A. [Physics Department, MS-220, University of Nevada, Reno, Nevada 89557 (United States); Gauthier, J.C. [Centre Lasers Intenses et Applications (CELIA), UMR 5107 CNRS, Universite Bordeaux 1, CEA, Universite Bordeaux 1, 33405 Talence (France); Habs, D.; Schramm, U.; Schreiber, J. [Ludwig-Maximilian Universitaet Muenchen, 85748 Garching (Germany); Karsch, S. [Max-Planck-Institut fuer Quantenoptik, 85748 Garching (Germany)] (and others)

    2005-05-15

    Collimated jets of beryllium, carbon, oxygen, fluorine, and palladium ions with >1 MeV/nucleon energies are observed from the rear surface of thin foils irradiated with laser intensities of up to 5x10{sup 19} W/cm{sup 2}. The normally dominant proton acceleration is suppressed when the target is subjected to Joule heating to remove hydrogen-bearing contaminant. This inhibits screening effects and permits effective energy transfer to and acceleration of heavier ion species. The influence of remnant protons on the spectral shape of the next highest charge-to-mass ratio species is shown. Particle-in-cell simulations confirming the experimental findings are presented.

  7. Acceleration to high velocities and heating by impact using Nike KrF laser

    SciTech Connect (OSTI)

    Karasik, Max; Weaver, J. L.; Velikovich, A. L.; Zalesak, S. T.; Bates, J. W.; Obenschain, S. P.; Schmitt, A. J.; Aglitskiy, Y.; Watari, T.; Arikawa, Y.; Sakaiya, T.; Murakami, M.; Azechi, H.; Oh, J.

    2010-05-15

    The Nike krypton fluoride laser [S. P. Obenschain, S. E. Bodner, D. Colombant, et al., Phys. Plasmas 3, 2098 (1996)] is used to accelerate planar plastic foils to velocities that for the first time reach 1000 km/s. Collision of the highly accelerated deuterated polystyrene foil with a stationary target produces approxGbar shock pressures and results in heating of the foil to thermonuclear temperatures. The impact conditions are diagnosed using DD fusion neutron yield, with approx10{sup 6} neutrons produced during the collision. Time-of-flight neutron detectors are used to measure the ion temperature upon impact, which reaches 2-3 keV.

  8. Nuclear Physics | Jefferson Lab

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

    Nuclear Physics Scientists from across the country and around the world use the Thomas Jefferson National Accelerator Facility to advance mankind's understanding of the atom's nucleus. To probe nuclei, scientists use continuous beams of high-energy electrons from the lab's Continuous Electron Beam Accelerator Facility, or CEBAF, and the advanced particle-detection and ultra-high-speed data acquisition equipment in CEBAF's four experimental halls. Jefferson Lab has both theoretical and

  9. Practical method and device for enhancing pulse contrast ratio for lasers and electron accelerators

    DOE Patents [OSTI]

    Zhang, Shukui; Wilson, Guy

    2014-09-23

    An apparatus and method for enhancing pulse contrast ratios for drive lasers and electron accelerators. The invention comprises a mechanical dual-shutter system wherein the shutters are placed sequentially in series in a laser beam path. Each shutter of the dual shutter system has an individually operated trigger for opening and closing the shutter. As the triggers are operated individually, the delay between opening and closing first shutter and opening and closing the second shutter is variable providing for variable differential time windows and enhancement of pulse contrast ratio.

  10. Diagnostic of laser-accelerated ion beams for the ELIMED project

    SciTech Connect (OSTI)

    Torrisi, L.; INFN-Laboratori Nazionali del Sud, V. S. Sofia 64, 95123 Catania ; Cutroneo, M.; Cavallaro, S.; Andò, L.; Calcagno, L.; Musumeci, P.

    2013-07-26

    The laser-generated plasma, in non equilibrium conditions, has peculiar properties depending strongly on the laser parameters, on the target composition and on the target geometry. Different fast diagnostic techniques can be employed for the plasma characterization in terms of particles and photons emission, plasma temperature and density, ion energy distribution, angular emission, yield and electric field acceleration. Particular attention is devoted to the proton emission from hydrogenated targets and to the proton diagnostics by using time of flight techniques and Thomson parabola spectrometry. The diagnostic techniques will be presented and discussed on the base of the development of the ELIMED project.

  11. 2010 - 12 | Jefferson Lab

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

    2 Dec 2010 Tue, 2010-12-21 13:00 Jefferson Lab Laser Twinkles in Rare Color Tue, 2010-12-14 13:00 NSC Technologies Joins DOE Mentor-Protégé Program With Jefferson Lab

  12. 2009 - 05 | Jefferson Lab

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

    5 May 2009 Wed, 2009-05-20 00:00 Jefferson Lab group wins national award (Daily Press) Tue, 2009-05-05 00:00 A Tribute to Professor Cornelius Bennhold Fri, 2009-05-01 00:00 Jefferson Lab's free-electron laser joins new research venture (Optics.org

  13. News Links | Jefferson Lab

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

    Brad Tippens, Dept. of Energy (March 16, 2011, A Message from Dr. Timothy Hallman, DOE) Jefferson Lab: Laser gun to eventually shoot down missiles (February 21, 2011, Daily Press) ...

  14. Tailoring the laser pulse shape to improve the quality of the self-injected electron beam in laser wakefield acceleration

    SciTech Connect (OSTI)

    Upadhyay, Ajay K.; Samant, Sushil A.; Krishnagopal, S.

    2013-01-15

    In laser wakefield acceleration, tailoring the shape of the laser pulse is one way of influencing the laser-plasma interaction and, therefore, of improving the quality of the self-injected electron beam in the bubble regime. Using three-dimensional particle-in-cell simulations, the evolution dynamics of the laser pulse and the quality of the self-injected beam, for a Gaussian pulse, a positive skew pulse (i.e., one with sharp rise and slow fall), and a negative skew pulse (i.e., one with a slow rise and sharp fall) are studied. It is observed that with a negative skew laser pulse there is a substantial improvement in the emittance (by around a factor of two), and a modest improvement in the energy-spread, compared to Gaussian as well as positive skew pulses. However, the injected charge is less in the negative skew pulse compared to the other two. It is also found that there is an optimal propagation distance that gives the best beam quality; beyond this distance, though the energy increases, the beam quality deteriorates, but this deterioration is least for the negative skew pulse. Thus, the negative skew pulse gives an improvement in terms of beam quality (emittance and energy spread) over what one can get with a Gaussian or positive skew pulse. In part, this is because of the lesser injected charge, and the strong suppression of continuous injection for the negative skew pulse.

  15. Creating a Well-focused Laser-accelerated Proton Beam as a Driver for

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

    Proton Fast Ignition | U.S. DOE Office of Science (SC) Creating a Well-focused Laser-accelerated Proton Beam as a Driver for Proton Fast Ignition Fusion Energy Sciences (FES) FES Home About Research Facilities Science Highlights Benefits of FES Funding Opportunities Fusion Energy Sciences Advisory Committee (FESAC) Community Resources Contact Information Fusion Energy Sciences U.S. Department of Energy SC-24/Germantown Building 1000 Independence Ave., SW Washington, DC 20585 P: (301)

  16. Jefferson Lab: Research Highlights

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

    Pulsed Laser Deposition - Magnetic thin films Photodynamic therapy Dynamics of Impurities in Semiconductors FEL Research Highlights Pulsed Laser Deposition - Magnetic thin films Well-behaved magnetic thin films of stoichiometric alloys, such as an alloy of nickel and iron (NiFe), are not easily formed. Anne Reilly and colleagues at Jefferson Lab and The College of William & Mary excited bulk NiFe with the Jefferson Lab FEL and found a strikingly different response than that found with a

  17. High-efficiency acceleration in the laser wakefield by a linearly increasing plasma density

    SciTech Connect (OSTI)

    Dong, Kegong; Wu, Yuchi; Zhu, Bin; Zhang, Zhimeng; Zhao, Zongqing; Zhou, Weimin; Hong, Wei; Cao, Leifeng; Gu, Yuqiu

    2014-12-15

    The acceleration length and the peak energy of the electron beam are limited by the dephasing effect in the laser wakefield acceleration with uniform plasma density. Based on 2D-3V particle in cell simulations, the effects of a linearly increasing plasma density on the electron acceleration are investigated broadly. Comparing with the uniform plasma density, because of the prolongation of the acceleration length and the gradually increasing accelerating field due to the increasing plasma density, the electron beam energy is twice higher in moderate nonlinear wakefield regime. Because of the lower plasma density, the linearly increasing plasma density can also avoid the dark current caused by additional injection. At the optimal acceleration length, the electron energy can be increased from 350 MeV (uniform) to 760 MeV (linearly increasing) with the energy spread of 1.8%, the beam duration is 5 fs and the beam waist is 1.25 μm. This linearly increasing plasma density distribution can be achieved by a capillary with special gas-filled structure, and is much more suitable for experiment.

  18. Beam loading in a laser-plasma accelerator using a near-hollow plasma channel

    SciTech Connect (OSTI)

    Schroeder, C. B.; Benedetti, C.; Esarey, E.; Leemans, W. P.

    2013-12-15

    Beam loading in laser-plasma accelerators using a near-hollow plasma channel is examined in the linear wake regime. It is shown that, by properly shaping and phasing the witness particle beam, high-gradient acceleration can be achieved with high-efficiency, and without induced energy spread or emittance growth. Both electron and positron beams can be accelerated in this plasma channel geometry. Matched propagation of electron beams can be achieved by the focusing force provided by the channel density. For positron beams, matched propagation can be achieved in a hollow plasma channel with external focusing. The efficiency of energy transfer from the wake to a witness beam is calculated for single ultra-short bunches and bunch trains.

  19. 2007 - 03 | Jefferson Lab

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

    3 Mar 2007 Fri, 2007-03-30 14:00 JSA Fellowship Awards for Research at the Jefferson Lab Fri, 2007-03-23 14:00 Andrew Hutton Named Head of Jefferson Lab's Accelerator Division Tue, 2007-03-06 13:00 Record 18 teams prepare for Virginia Regional Middle School Science Bowl on March 10 at Jefferson Lab Tue, 2007-03-06 13:00 Record 18 teams prepare for Virginia Regional Middle School Science Bowl on March 10 at Jefferson Lab

  20. 2012 - 05 | Jefferson Lab

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

    5 May 2012 Sat, 2012-05-19 00:00 8,000 visitors tour Jefferson Lab: Electron accelerator shut down for rebuild (Daily Press) Wed, 2012-05-09 00:00 Hampton University professor to become group leader at Jefferson Lab (Virginia Business) Sat, 2012-05-05 00:00 Jefferson Lab to host open house May 19 (Inside Newport News Central) Sat, 2012-05-05 00:00 Jefferson Lab Hosts 2012 SPAFOA Members Meeting (Meyer Cryogenic, Vacuum and Pressure Technologies) Sat, 2012-05-05 00:00 Cold Facts staff tour JLab's

  1. 1997 - 03 | Jefferson Lab

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

    3 Mar 1997 Fri, 1997-03-28 00:00 Jefferson Lab Earns Hammer (Daily Press) Wed, 1997-03-26 00:00 Defects Fade Away Surgical Uses Continue to Grow (Daily Press) Mon, 1997-03-17 00:00 Laboratory Profile: Jefferson Lab Introduction (Nuclear Physics News) Mon, 1997-03-17 00:00 Laboratory Profile: Jefferson Lab Scientific Motivation and Research Program (Nuclear Physics News) Mon, 1997-03-17 00:00 Laboratory Profile: Jefferson Lab The Accelerator (Nuclear Physics News) Mon, 1997-03-17 00:00 Laboratory

  2. Attosecond Thomson-scattering x-ray source driven by laser-based electron acceleration

    SciTech Connect (OSTI)

    Luo, W.; Zhuo, H. B.; Yu, T. P.; Ma, Y. Y.; Song, Y. M.; Zhu, Z. C.; Yu, M. Y.

    2013-10-21

    The possibility of producing attosecond x-rays through Thomson scattering of laser light off laser-driven relativistic electron beams is investigated. For a ≤200-as, tens-MeV electron bunch produced with laser ponderomotive-force acceleration in a plasma wire, exceeding 10{sup 6} photons/s in the form of ∼160 as pulses in the range of 3–300 keV are predicted, with a peak brightness of ≥5 × 10{sup 20} photons/(s mm{sup 2} mrad{sup 2} 0.1% bandwidth). Our study suggests that the physical scheme discussed in this work can be used for an ultrafast (attosecond) x-ray source, which is the most beneficial for time-resolved atomic physics, dubbed “attosecond physics.”.

  3. Jefferson Lab Leadership Council - Hugh E. Montgomery

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

    JLab Director, Hugh E. Montgomery Hugh E. Montgomery Director, Thomas Jefferson National Accelerator Facility Dr. Hugh E. Montgomery is the Director of the Thomas Jefferson National Accelerator Facility (Jefferson Lab). As the lab's chief executive officer, he is responsible for ensuring funding for the lab and for setting policy and program direction. In addition, he oversees the delivery of the lab program and ensures that Jefferson Lab complies with all regulations, laws and contract

  4. 2009 - 04 | Jefferson Lab

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

    4 Apr 2009 Wed, 2009-04-29 14:00 Jefferson Lab's Free-Electron Laser Joins With Others in New Research Venture Mon, 2009-04-27 14:00 Jefferson Lab Website Offers Preparation Help For Virginia Standards of Learning Tests Mon, 2009-04-27 14:00 Jefferson Lab Recognizes Top Small Business Subcontractor for 2008 Wed, 2009-04-15 14:00 Proton Research Earns 2008 JSA Thesis Prize Tue, 2009-04-14 14:00 Jefferson Lab Breaks Ground On $310 Million Project Fri, 2009-04-03 14:00 Media Advisory - Jefferson

  5. Characterization of proton and heavier ion acceleration in ultrahigh-intensity laser interactions with heated target foils

    SciTech Connect (OSTI)

    McKenna, P.; Ledingham, K.W.D.; Yang, J.M.; Robson, L.; McCanny, T.; Shimizu, S.; Clarke, R.J.; Neely, D.; Norreys, P.A.; Spohr, K.; Chapman, R.; Singhal, R.P.; Krushelnick, K.; Wei, M.S.

    2004-09-01

    Proton and heavy ion acceleration in ultrahigh intensity ({approx}2x10{sup 20} W cm{sup -2}) laser plasma interactions has been investigated using the new petawatt arm of the VULCAN laser. Nuclear activation techniques have been applied to make the first spatially integrated measurements of both proton and heavy ion acceleration from the same laser shots with heated and unheated Fe foil targets. Fe ions with energies greater than 10 MeV per nucleon have been observed. Effects of target heating on the accelerated ion energy spectra and the laser-to-ion energy conversion efficiencies are discussed. The laser-driven production of the long-lived isotope {sup 57}Co (271 days) via a heavy ion induced reaction is demonstrated.

  6. BESTIA - the next generation ultra-fast CO2 laser for advanced accelerator research

    SciTech Connect (OSTI)

    Pogorelsky, Igor V.; Babzien, Markus; Ben-Zvi, Ilan; Skaritka, John; Polyanskiy, Mikhail N.

    2015-12-02

    Over the last two decades, BNL’s ATF has pioneered the use of high-peak power CO2 lasers for research in advanced accelerators and radiation sources. In addition, our recent developments in ion acceleration, Compton scattering, and IFELs have further underscored the benefits from expanding the landscape of strong-field laser interactions deeper into the mid-infrared (MIR) range of wavelengths. This extension validates our ongoing efforts in advancing CO2 laser technology, which we report here. Our next-generation, multi-terawatt, femtosecond CO2 laser will open new opportunities for studying ultra-relativistic laser interactions with plasma in the MIR spectral domain, including new regimes in the particle acceleration of ions and electrons.

  7. Study of electron acceleration and x-ray radiation as a function of plasma density in capillary-guided laser wakefield accelerators

    SciTech Connect (OSTI)

    Ju, J.; Döpp, A.; Cros, B.; Svensson, K.; Genoud, G.; Wojda, F.; Burza, M.; Persson, A.; Lundh, O.; Wahlström, C.-G.; Ferrari, H.

    2013-08-15

    Laser wakefield electron acceleration in the blow-out regime and the associated betatron X-ray radiation were investigated experimentally as a function of the plasma density in a configuration where the laser is guided. Dielectric capillary tubes were employed to assist the laser keeping self-focused over a long distance by collecting the laser energy around its central focal spot. With a 40 fs, 16 TW pulsed laser, electron bunches with tens of pC charge were measured to be accelerated to an energy up to 300 MeV, accompanied by X-ray emission with a peak brightness of the order of 10{sup 21} ph/s/mm{sup 2}/mrad{sup 2}/0.1%BW. Electron trapping and acceleration were studied using the emitted X-ray beam distribution to map the acceleration process; the number of betatron oscillations performed by the electrons was inferred from the correlation between measured X-ray fluence and beam charge. A study of the stability of electron and X-ray generation suggests that the fluctuation of X-ray emission can be reduced by stabilizing the beam charge. The experimental results are in good agreement with 3D particle-in-cell (PIC) simulation.

  8. 2006 | Jefferson Lab

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

    Dec 2006 Mon, 2006-12-18 00:00 For laser at Jefferson Lab, it's 'pick a wavelength' (The Virginian-Pilot) Mon, 2006-12-18 00:00 H. Frederick Dylla to Head the American Institute of Physics (Interactions.org) Nov 2006 Thu, 2006-11-16 00:00 Jefferson Lab attracts record numbers to Geant4 workshop (Cern Courier) Sun, 2006-11-12 00:00 Jefferson Lab laser sets power record (Richmond Times-Dispatch) Fri, 2006-11-10 00:00 Goal: To make Hampton Roads a center for the cutting edge (The Virginian-Pilot)

  9. Christoph W. Leemann Named Jefferson Lab Director | Jefferson Lab

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

    W. Leemann Named Jefferson Lab Director Christoph W. Leemann Named Jefferson Lab Director November 16, 2001 The Southeastern Universities Research Association (SURA) has selected internationally recognized particle-accelerator physicist Christoph W. Leemann as director of the Department of Energy's Thomas Jefferson National Accelerator Facility (Jefferson Lab). Leemann has been serving for the past year as interim director of the Newport News, Virginia nuclear physics laboratory, a world center

  10. Ion Acceleration from the Interaction of Ultra-Intense Lasers with Solid Foils

    SciTech Connect (OSTI)

    Allen, M

    2004-11-24

    The discovery that ultra-intense laser pulses (I > 10{sup 18} W/cm{sup 2}) can produce short pulse, high energy proton beams has renewed interest in the fundamental mechanisms that govern particle acceleration from laser-solid interactions. Experiments have shown that protons present as hydrocarbon contaminants on laser targets can be accelerated up to energies > 50 MeV. Different theoretical models that explain the observed results have been proposed. One model describes a front-surface acceleration mechanism based on the ponderomotive potential of the laser pulse. At high intensities (I > 10{sup 18} W/cm{sup 2}), the quiver energy of an electron oscillating in the electric field of the laser pulse exceeds the electron rest mass, requiring the consideration of relativistic effects. The relativistically correct ponderomotive potential is given by U{sub p} = ([1 + I{lambda}{sup 2}/1.3 x 10{sup 18}]{sup 1/2} - 1) m{sub o}c{sup 2}, where I{lambda}{sup 2} is the irradiance in W {micro}m{sup 2}/cm{sup 2} and m{sub o}c{sup 2} is the electron rest mass. At laser irradiance of I{lambda}{sup 2} {approx} 10{sup 20} W {micro}m{sup 2}/cm{sup 2}, the ponderomotive potential can be of order several MeV. A few recent experiments--discussed in Chapter 3 of this thesis--consider this ponderomotive potential sufficiently strong to accelerate protons from the front surface of the target to energies up to tens of MeV. Another model, known as Target Normal Sheath Acceleration (TNSA), describes the mechanism as an electrostatic sheath on the back surface of the laser target. According to the TNSA model, relativistic hot electrons created at the laser-solid interaction penetrate the foil where a few escape to infinity. The remaining hot electrons are retained by the target potential and establish an electrostatic sheath on the back surface of the target. In this thesis we present several experiments that study the accelerated ions by affecting the contamination layer from which they

  11. Livermore Lab's giant laser system will bring star power to Earth

    SciTech Connect (OSTI)

    Moses, E

    2010-04-08

    In the 50 years since the laser was first demonstrated in Malibu, California, on May 16, 1960, Lawrence Livermore National Laboratory (LLNL) has been a world leader in laser technology and the home for many of the world's most advanced laser systems. That tradition continues today at LLNL's National Ignition Facility (NIF), the world's most energetic laser system. NIF's completion in March 2009 not only marked the dawn of a new era of scientific research - it could also prove to be the next big step in the quest for a sustainable, carbon-free energy source for the world. NIF consists of 192 laser beams that will focus up to 1.8 million joules of energy on a bb-sized target filled with isotopes of hydrogen - forcing the hydrogen nuclei to collide and fuse in a controlled thermonuclear reaction similar to what happens in the sun and the stars. More energy will be produced by this 'ignition' reaction than the amount of laser energy required to start it. This is the long-sought goal of 'energy gain' that has eluded fusion researchers for more than half a century. Success will be a scientific breakthrough - the first demonstration of fusion ignition in a laboratory setting, duplicating on Earth the processes that power the stars. This impending success could not be achieved without the valuable partnerships forged with other national and international laboratories, private industry and universities. One of the most crucial has been between LLNL and the community in which it resides. Over 155 businesses in the local Tri-Valley area have contributed to the NIF, from industrial technology and engineering firms to tool manufacturing, electrical, storage and supply companies. More than $2.3B has been spent locally between contracts with nearby merchants and employee salaries. The Tri-Valley community has enabled the Laboratory to complete a complex and far-reaching project that will have national and global impact in the future. The first experiments were conducted on NIF

  12. A Wire Position Monitor System for the 1.3 FHZ Tesla-Style Cryomodule at the Fermilab New-Muon-Lab Accelerator

    SciTech Connect (OSTI)

    Eddy, N.; Fellenz, B.; Prieto, P.; Semenov, A.; Voy, D.C.; Wendt, M.; /Fermilab

    2011-08-17

    The first cryomodule for the beam test facility at the Fermilab New-Muon-Lab building is currently under RF commissioning. Among other diagnostics systems, the transverse position of the helium gas return pipe with the connected 1.3 GHz SRF accelerating cavities is measured along the {approx}15 m long module using a stretched-wire position monitoring system. An overview of the wire position monitor system technology is given, along with preliminary results taken at the initial module cooldown, and during further testing. As the measurement system offers a high resolution, we also discuss options for use as a vibration detector. An electron beam test facility, based on superconducting RF (SRF) TESLA-style cryomodules is currently under construction at the Fermilab New-Muon-Lab (NML) building. The first, so-called type III+, cryomodule (CM-1), equipped with eight 1.3 GHz nine-cell accelerating cavities was recently cooled down to 2 K, and is currently under RF conditioning. The transverse alignment of the cavity string within the cryomodule is crucial for minimizing transverse kick and beam break-up effects, generated by the high-order dipole modes of misaligned accelerating structures. An optimum alignment can only be guaranteed during the assembly of the cavity string, i.e. at room temperatures. The final position of the cavities after cooldown is uncontrollable, and therefore unknown. A wire position monitoring system (WPM) can help to understand the transverse motion of the cavities during cooldown, their final location and the long term position stability after cryo-temperatures are settled, as well as the position reproducibility for several cold-warm cycles. It also may serve as vibration sensor, as the wire acts as a high-Q resonant detector for mechanical vibrations in the low-audio frequency range. The WPM system consists out of a stretched-wire position detection system, provided with help of INFN-Milano and DESY Hamburg, and RF generation and read

  13. Effect of the laser spot shape on spatial distribution of the ion bunch accelerated in a superstrong field

    SciTech Connect (OSTI)

    Komarov, V M; Charukhchev, A V; Andreev, A A; Platonov, K Yu

    2014-12-31

    We have investigated the effect of the laser spot shape on the spatial distribution of accelerated ions on the front and back sides of a thin target irradiated by a picosecond laser pulse having the intensity of (3 – 4) × 10{sup 18} W cm{sup -2}. Experimental data are compared with numerical calculations. It is shown that the spatial structure of the ion bunch on the front side of the target resembles the laser spot structure rotated by 90°. (interaction of laser radiation with matter. laser plasma)

  14. New facility boosts Lab's ability to ship transuranic waste

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

    Lab's ability to ship transuranic waste New facility boosts Lab's ability to ship transuranic waste Construction has begun on a new facility that will help Los Alamos accelerate ...

  15. Passive tailoring of laser-accelerated ion beam cut-off energy by using double foil assembly

    SciTech Connect (OSTI)

    Chen, S. N. Brambrink, E.; Mancic, A.; Romagnani, L.; Audebert, P.; Fuchs, J.; Robinson, A. P. L.; Antici, P.; Dipartimento SBAI, Università di Roma « La Sapienza », Via Scarpa 14-16, 00165 Roma; INRS-Énergie et Matériaux, 1650 bd. L. Boulet, Varennes, J3X1S2 Québec ; D'Humières, E.; Centre de Physique Théorique, CNRS-Ecole Polytechnique, 91128 Palaiseau; University of Bordeaux—CNRS—CEA, CELIA, UMR5107, 33405 Talence ; Gaillard, S.; Grismayer, T.; Mora, P.; Pépin, H.

    2014-02-15

    A double foil assembly is shown to be effective in tailoring the maximum energy produced by a laser-accelerated proton beam. The measurements compare favorably with adiabatic expansion simulations, and particle-in-cell simulations. The arrangement proposed here offers for some applications a simple and passive way to utilize simultaneously highest irradiance lasers that have best laser-to-ion conversion efficiency while avoiding the production of undesired high-energy ions.

  16. Effect of resistivity gradient on laser-driven electron transport and ion acceleration

    SciTech Connect (OSTI)

    Zhuo, H. B.; Yang, X. H.; Ma, Y. Y.; Li, X. H.; Zhou, C. T.; Institute of Applied Physics and Computational Mathematics, Beijing 100094 ; Yu, M. Y.; Institute for Theoretical Physics I, Ruhr University, Bochum D-44780

    2013-09-15

    The effect of resistivity gradient on laser-driven electron transport and ion acceleration is investigated using collisional particle-in-cell simulation. The study is motivated by recent proton acceleration experiments [Gizzi et al., Phys. Rev. ST Accel. Beams 14, 011301 (2011)], which showed significant effect of the resistivity gradient in layered targets on the proton angular spread. This effect is reproduced in the present simulations. It is found that resistivity-gradient generation of magnetic fields and inhibition of electron transport is significantly enhanced when the feedback interaction between the magnetic field and the fast-electron current is included. Filamentation of the laser-generated hot electron jets inside the target, considered as the origin of the nonuniform proton patterns observed in the experiments, is clearly suppressed by the resistive magnetic field. As a result, the electrostatic sheath field at the target back surface acquires a relatively smooth profile, which contributes to the superior quality of the proton beams accelerated off layered targets in the experiments.

  17. On the feasibility of increasing the energy of laser-accelerated protons by using low-density targets

    SciTech Connect (OSTI)

    Brantov, A. V. Bychenkov, V. Yu.

    2015-06-15

    Optimal regimes of proton acceleration in the interaction of short high-power laser pulses with thin foils and low-density targets are determined by means of 3D numerical simulation. It is demonstrated that the maximum proton energy can be increased by using low-density targets in which ions from the front surface of the target are accelerated most efficiently. It is shown using a particular example that, for the same laser pulse, the energy of protons accelerated from a low-density target can be increased by one-third as compared to a solid-state target.

  18. Optical control of electron phase space in plasma accelerators with incoherently stacked laser pulses

    SciTech Connect (OSTI)

    Kalmykov, S. Y. Shadwick, B. A.; Davoine, X.; Lehe, R.; Lifschitz, A. F.

    2015-05-15

    It is demonstrated that synthesizing an ultrahigh-bandwidth, negatively chirped laser pulse by incoherently stacking pulses of different wavelengths makes it possible to optimize the process of electron self-injection in a dense, highly dispersive plasma (n{sub 0}∼10{sup 19} cm{sup −3}). Avoiding transformation of the driving pulse into a relativistic optical shock maintains a quasi-monoenergetic electron spectrum through electron dephasing and boosts electron energy far beyond the limits suggested by existing scaling laws. In addition, evolution of the accelerating bucket in a plasma channel is shown to produce a background-free, tunable train of femtosecond-duration, 35–100 kA, time-synchronized quasi-monoenergetic electron bunches. The combination of the negative chirp and the channel permits acceleration of electrons beyond 1 GeV in a 3 mm plasma with 1.4 J of laser pulse energy, thus offering the opportunity of high-repetition-rate operation at manageable average laser power.

  19. 1999 - 09 | Jefferson Lab

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

    9 Sep 1999 Sat, 1999-09-11 00:00 Laser Researcher to Speak at Museum (Daily Press) Thu, 1999-09-09 00:00 Success at Jefferson Lab Spurs Need for More Space (Burrelle's) Wed, 1999-09-01 00:00 BIG FEL Grows in Power (Laser Focus World

  20. 2011 - 02 | Jefferson Lab

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

    2 Feb 2011 Mon, 2011-02-21 00:00 Jefferson Lab: Laser gun to eventually shoot down missiles (Daily Press) Sun, 2011-02-20 00:00 Navy Breaks World Record With Futuristic Free-Electron Laser (FOX News.com) Fri, 2011-02-18 00:00 Unexpectedly, Navy?s Superlaser Blasts Away a Record (Wired

  1. Simulation of direct plasma injection for laser ion beam acceleration with a radio frequency quadrupole

    SciTech Connect (OSTI)

    Jin, Q. Y.; Li, Zh. M.; Liu, W.; Zhao, H. Y. Zhang, J. J.; Sha, Sh.; Zhang, Zh. L.; Zhang, X. Zh.; Sun, L. T.; Zhao, H. W.

    2014-07-15

    The direct plasma injection scheme (DPIS) has been being studied at Institute of Modern Physics since several years ago. A C{sup 6+} beam with peak current of 13 mA, energy of 593 keV/u has been successfully achieved after acceleration with DPIS method. To understand the process of DPIS, some simulations have been done as follows. First, with the total current intensity and the relative yields of different charge states for carbon ions measured at the different distance from the target, the absolute current intensities and time-dependences for different charge states are scaled to the exit of the laser ion source in the DPIS. Then with these derived values as the input parameters, the extraction of carbon beam from the laser ion source to the radio frequency quadrupole with DPIS is simulated, which is well agreed with the experiment results.

  2. High-intensity laser-driven proton acceleration enhancement from hydrogen containing ultrathin targets

    SciTech Connect (OSTI)

    Dollar, F.; Reed, S. A.; Matsuoka, T.; Bulanov, S. S.; Chvykov, V.; Kalintchenko, G.; McGuffey, C.; Rousseau, P.; Thomas, A. G. R.; Willingale, L.; Yanovsky, V.; Krushelnick, K.; Maksimchuk, A.; Litzenberg, D. W.

    2013-09-30

    Laser driven proton acceleration experiments from micron and submicron thick targets using high intensity (2 × 10{sup 21} W/cm{sup 2}), high contrast (10{sup −15}) laser pulses show an enhancement of maximum energy when hydrogen containing targets were used instead of non-hydrogen containing. In our experiments, using thin (<1μm) plastic foil targets resulted in maximum proton energies that were consistently 20%–100% higher than when equivalent thickness inorganic targets, including Si{sub 3}N{sub 4} and Al, were used. Proton energies up to 20 MeV were measured with a flux of 10{sup 7} protons/MeV/sr.

  3. Measurements of the critical power for self-injection of electrons in a laser wakefield accelerator

    SciTech Connect (OSTI)

    Froula, D H; Clayton, C E; Doppner, T; Fonseca, R A; Marsh, K A; Barty, C J; Divol, L; Glenzer, S H; Joshi, C; Lu, W; Martins, S F; Michel, P; Mori, W; Palastro, J P; Pollock, B B; Pak, A; Ralph, J E; Ross, J S; Siders, C; Silva, L O; Wang, T

    2009-06-02

    A laser wakefield acceleration study has been performed in the matched, self-guided, blow-out regime where a 10 J, 60 fs laser produced 720 {+-} 50 MeV quasi-monoenergetic electrons with a divergence of {Delta}{theta} = 2.85 {+-} 0.15 mRad. While maintaining a nearly constant plasma density (3 x 10{sup 18} cm{sup -3}), a linear electron energy gain was measured from 100 MeV to 700 MeV when the plasma length was scaled from 3 mm to 8 mm. Absolute charge measurements indicate that self-injection occurs when P/P{sub cr} > 4 and saturates around 100 pC for P/P{sub cr} > 12. The results are compared with both analytical scalings and full 3D particle-in-cell simulations.

  4. Shock wave acceleration of protons in inhomogeneous plasma interacting with ultrashort intense laser pulses

    SciTech Connect (OSTI)

    Lecz, Zs.; Andreev, A.

    2015-04-15

    The acceleration of protons, triggered by solitary waves in expanded solid targets is investigated using particle-in-cell simulations. The near-critical density plasma is irradiated by ultrashort high power laser pulses, which generate the solitary wave. The transformation of this soliton into a shock wave during propagation in plasma with exponentially decreasing density profile is described analytically, which allows to obtain a scaling law for the proton energy. The high quality proton bunch with small energy spread is produced by reflection from the shock-front. According to the 2D simulations, the mechanism is stable only if the laser pulse duration is shorter than the characteristic development time of the parasitic Weibel instability.

  5. The slingshot effect: A possible new laser-driven high energy acceleration mechanism for electrons

    SciTech Connect (OSTI)

    Fiore, Gaetano; Fedele, Renato; Angelis, Umberto de

    2014-11-15

    We show that under appropriate conditions the impact of a very short and intense laser pulse onto a plasma causes the expulsion of surface electrons with high energy in the direction opposite to the one of the propagations of the pulse. This is due to the combined effects of the ponderomotive force and the huge longitudinal field arising from charge separation (“slingshot effect”). The effect should also be present with other states of matter, provided the pulse is sufficiently intense to locally cause complete ionization. An experimental test seems to be feasible and, if confirmed, would provide a new extraction and acceleration mechanism for electrons, alternative to traditional radio-frequency-based or laser-wake-field ones.

  6. Two GeV Electrons Achieved by Laser Plasma Wakefield Acceleration | U.S.

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

    DOE Office of Science (SC) Two GeV Electrons Achieved by Laser Plasma Wakefield Acceleration High Energy Physics (HEP) HEP Home About Research Facilities Science Highlights Benefits of HEP Funding Opportunities Advisory Committees Community Resources Contact Information High Energy Physics U.S. Department of Energy SC-25/Germantown Building 1000 Independence Ave., SW Washington, DC 20585 P: (301) 903-3624 F: (301) 903-2597 E: Email Us More Information » 07.01.13 Two GeV Electrons Achieved

  7. Laser acceleration of electrons in two-dimensionally inhomogeneous plasma at the boundary of a metal foil

    SciTech Connect (OSTI)

    Pugachev, L. P. Andreev, N. E. Levashov, P. R.; Malkov, Yu. A. Stepanov, A. N. Yashunin, D. A.

    2015-07-15

    The electron acceleration mechanism associated with the generation of a plasma wave due to self-modulation instability of laser radiation in a subcritical plasma produced by a laser prepulse coming 10 ns before the arrival of the main intense femtosecond pulse is considered. Three-dimensional particle-in-cell simulations of the interaction of laser radiation with two-dimensionally inhomogeneous subcritical plasma have shown that, for a sufficiently strong plasma inhomogeneity and a sharp front of the laser pulse, efficient plasma wave excitation, electron trapping, and generation of collimated electron beams with energies on the order of 0.2–0.5 MeV can occur. The simulation results agree with experiments on the generation of collimated beams of accelerated electrons from metal targets irradiated by intense femtosecond laser pulses.

  8. Archived Brochures & Fact Sheets | Jefferson Lab

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

    Archived Brochures & Fact Sheets CEBAF ARRA Infrastructure ARRA at JLab JLab at a Glance FEL Panel TEDF 12Gev Slick Terahertz Slick FEL (Free Electron Laser) FEL (Free Electron Laser) Fact Sheet Free-Electron Laser Brochure Free-Electron Laser Brochure Jefferson Lab General Brochure Jefferson Lab General Brochure JLab Factsheet Slick Jefferson Lab Factsheet Slick Science Education Brochure Science Education Brochure Current Brochures

  9. Search Jefferson Lab | Jefferson Lab

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

    Search Jefferson Lab Arial view of Jefferson Lab Phone Book A-Z Index Departments Search the JLab Web Site Search Search

  10. 2014 - 08 | Jefferson Lab

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

    8 Aug 2014 Thu, 2014-08-14 14:24 Jefferson Lab Offers Science Enrichment Program for 5th, 6th & 8th Grade Teachers; Registration Deadline is Sept. 12 Mon, 2014-08-11 11:18 Jefferson Lab accelerator upgrade completed: Initial operations set to begin while experimental equipment upgrades continue Fri, 2014-08-08 17:07 W&M Student Elected to Represent American Physical Society's Graduate Student Forum

  11. Experiment Research | Jefferson Lab

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

    Experiment Research Jefferson Lab has an ongoing and ambitious experimental program. Most experiments carried out with the Continuous Electron Beam Accelerator Facility (CEBAF) are in the field of nuclear physics and can be described in terms of the following. Structure of the Nucleus Here at Jefferson Lab, we study the structure of nuclear matter: how protons and neutrons (called nucleons) combine to make the nucleus and what forces bind nucleons together. We also peer deep inside nucleons to

  12. Jefferson Lab Directorate

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

    Directorate Privacy and Security Notice Skip over navigation Search the JLab Site Search Please upgrade your browser. This site's design is only visible in a graphical browser that supports web standards, but its content is accessible to any browser. Concerns? Jefferson Lab Navigation Home Search News Insight print version Org Charts Directorate Accelerator COO CFO CIO CSO CTO ESH&Q FEL IT Physics Mission of the Directorate The Jefferson Lab Directorate is responsible for supporting the

  13. Cloistered | Jefferson Lab

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

    Cloistered Cloistered June 27, 2013 Jefferson Lab is a user facility; we conduct experiments, dominantly, but not exclusively, on the CEBAF (Continuous Electron Beam Accelerator Facility). Which experiments are run, and for what periods, result from decisions made by the Director. However, there is a lot of input to the process. In fact, the process an experiment might follow - from idea to publication - is laid out in a detailed flow chart that can be found on the Jefferson Lab web page. One

  14. Jefferson Lab | Jefferson Lab

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

    The electrode and insulating base are part of an electron source, which generates electrons for use in particle accelerators. The elements are being tested for high-voltage...

  15. 2010 - 12 | Jefferson Lab

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

    2 Dec 2010 Wed, 2010-12-29 00:00 Laser Makes New Shade of Ultraviolet (COSMIC Log on MSNBC.com) Mon, 2010-12-27 00:00 Laser Tricks: Making a New Color (Discovery News) Thu, 2010-12-23 00:00 10eV Photons of UV Laser Light Delivered (Photonics) Wed, 2010-12-22 00:00 Laser Twinkles in Rare Color (Science Daily) Tue, 2010-12-21 00:00 Jefferson Lab Laser Twinkles in Rare Color (PhysOrg

  16. #LabSpotlight - People of the National Labs | Department of Energy

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

    #LabSpotlight - People of the National Labs #LabSpotlight - People of the National Labs #LabSpotlight - People of the National Labs Our #LabSpotlight series profiles standout individuals at the National Labs. From a theoretical physicist working to better understand one of the most elusive particles in the universe to a master optician hand-polishing precision optics used in high-powered lasers, the National Labs are home to some of the most exceptional people in their fields. These are their

  17. 1999 - 08 | Jefferson Lab

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

    8 Aug 1999 Thu, 1999-08-26 00:00 New I-64 Sign Points to Times Past (Daily Press) Wed, 1999-08-25 00:00 Powerful Tunable Laser Exceeds Design Goals (DOE Pulse) Sun, 1999-08-08 00:00 U. Va. Gets $2.5 Million for Study at Jefferson Lab (Daily Press) Sat, 1999-08-07 00:00 Another Research Building Considered Near Jefferson Lab (Daily Press

  18. Electron acceleration by laser wakefield and x-ray emission at moderate intensity and density in long plasmas

    SciTech Connect (OSTI)

    Ferrari, H. E.; Lifschitz, A. F.; Maynard, G.; Cros, B.

    2011-08-15

    The dynamics of electron acceleration by laser wakefield and the associated x-rays emission in long plasmas are numerically investigated for parameters close to the threshold of laser self-focusing. The plasma length is set by the use of dielectric capillary tubes that confine the gas and the laser energy. Electrons self-injection and acceleration to the 170 MeVs are obtained for densities as low as 5 x 10{sup 18} cm{sup -3} and a moderate input intensity (0.77 x 10{sup 18} W/cm{sup 2}). The associated x-ray emission at the exit of the capillary tube is shown to be an accurate diagnostic of the electrons self-injection and acceleration process.

  19. 2003 - 02 | Jefferson Lab

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

    2 Feb 2003 Wed, 2003-02-26 13:00 Jefferson Lab seeks applicants for summer, science teacher enrichment program Wed, 2003-02-26 13:00 'Comic Book Physics' examined at Jefferson Lab's March 25 Science Series event Tue, 2003-02-25 15:38 Jefferson Lab plans Open House on Saturday, April 26 Fri, 2003-02-21 15:40 Want the latest info on JLab's public, educational events? Wed, 2003-02-12 13:00 Free-electron laser scientist is one of two newly elected American Physical Society Fellows at JLab Wed,

  20. 2001 - 03 | Jefferson Lab

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

    3 Mar 2001 Tue, 2001-03-20 00:00 Tool of the Future Lies in the Answer to the Nanotubes (Daily Press) Thu, 2001-03-15 00:00 Jefferson Lab to Host Teachers' Course (Daily Press) Thu, 2001-03-15 00:00 State Should Invest More in High-Tech Economy (Daily Press) Mon, 2001-03-12 00:00 Lab's Laser Key to Strong Metals: Free-electron technique tested locally shows promise (Daily Press) Thu, 2001-03-08 00:00 Tiny Machines Hold Big Dreams: Jefferson Lab Scientists Hope for State Funds (Daily Press

  1. Research AT JEFFERSON LAB | Jefferson Lab

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

    Research AT JEFFERSON LAB Experimental Halls A, B and C (from left to right) as seen from overhead. The halls, which appear as circles, are massive facilities that house sophisticated equipment as large as a house. A fourth experimental hall, Hall D, is located on the far side of the accelerator site. As a world-leading nuclear physics research facility, Jefferson Lab is engaged in many exciting science programs and has developed areas of expertise that support its primary mission to explore the

  2. Lab-Corps | Department of Energy

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

    Lab-Corps Lab-Corps Lab-Corps Cohort 3, which runs July 12-Aug. 25, immerses laboratory scientists in an entrepreneurial boot camp to evaluate the market potential of their technologies. Watch this video to learn more about the Lab-Corps program. The Lab-Corps program is a specialized training curriculum aimed at accelerating the transfer of clean energy technologies from national laboratories into the commercial marketplace. The program focuses on establishing a set of proven training methods

  3. A high-finesse Fabry-Perot cavity with a frequency-doubled green laser for precision Compton polarimetry at Jefferson Lab

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

    Rakhman, A.; Hafez, Mohamed A.; Nanda, Sirish K.; Benmokhtar, Fatiha; Camsonne, Alexandre; Cates, Gordon D.; Dalton, Mark M.; Franklin, Gregg B.; Friend, Megan L.; Michaels, Robert W.; et al

    2016-03-31

    Here, a high-finesse Fabry-Perot cavity with a frequency-doubled continuous wave green laser (532 nm) has been built and installed in Hall A of Jefferson Lab for high precision Compton polarimetry. The infrared (1064 nm) beam from a ytterbium-doped fiber amplifier seeded by a Nd:YAG nonplanar ring oscillator laser is frequency doubled in a single-pass periodically poled MgO:LiNbO3 crystal. The maximum achieved green power at 5 W infrared pump power is 1.74 W with a total conversion efficiency of 34.8%. The green beam is injected into the optical resonant cavity and enhanced up to 3.7 kW with a corresponding enhancement ofmore » 3800. The polarization transfer function has been measured in order to determine the intra-cavity circular laser polarization within a measurement uncertainty of 0.7%. The PREx experiment at Jefferson Lab used this system for the first time and achieved 1.0% precision in polarization measurements of an electron beam with energy and current of 1.0 GeV and 50 μA.« less

  4. Lab Equipment & Capability | Photosynthetic Antenna Research Center

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

    Lab Equipment & Capability Lab Equipment & Capability Here you will find a list of the equipment and capabilities currently installed in PARC labs. This list will be updated as more information becomes available. Bocian Group: Laboratory: D. F. Bocian has ~2500 sq. ft. of laboratory space including both wet labs and instrument labs. These labs contain ~10 pentium-based PCs for routine computing applications. Laser Raman Facility-A complete laser Raman facility is available for the

  5. Compact tunable Compton x-ray source from laser-plasma accelerator and plasma mirror

    SciTech Connect (OSTI)

    Tsai, Hai-En; Wang, Xiaoming; Shaw, Joseph M.; Li, Zhengyan; Zgadzaj, Rafal; Henderson, Watson; Downer, M. C.; Arefiev, Alexey V.; Zhang, Xi; Khudik, V.; Shvets, G.

    2015-02-15

    We present an in-depth experimental-computational study of the parameters necessary to optimize a tunable, quasi-monoenergetic, efficient, low-background Compton backscattering (CBS) x-ray source that is based on the self-aligned combination of a laser-plasma accelerator (LPA) and a plasma mirror (PM). The main findings are (1) an LPA driven in the blowout regime by 30 TW, 30 fs laser pulses produce not only a high-quality, tunable, quasi-monoenergetic electron beam, but also a high-quality, relativistically intense (a{sub 0} ∼ 1) spent drive pulse that remains stable in profile and intensity over the LPA tuning range. (2) A thin plastic film near the gas jet exit retro-reflects the spent drive pulse efficiently into oncoming electrons to produce CBS x-rays without detectable bremsstrahlung background. Meanwhile, anomalous far-field divergence of the retro-reflected light demonstrates relativistic “denting” of the PM. Exploiting these optimized LPA and PM conditions, we demonstrate quasi-monoenergetic (50% FWHM energy spread), tunable (75–200 KeV) CBS x-rays, characteristics previously achieved only on more powerful laser systems by CBS of a split-off, counter-propagating pulse. Moreover, laser-to-x-ray photon conversion efficiency (∼6 × 10{sup −12}) exceeds that of any previous LPA-based quasi-monoenergetic Compton source. Particle-in-cell simulations agree well with the measurements.

  6. 2001 - 08 | Jefferson Lab

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

    8 Aug 2001 Thu, 2001-08-30 00:00 Learning to Teach Physics (Daily Press) Mon, 2001-08-20 00:00 Navy-Funded Lab Develops Powerful Laser for Missile Defense (Navy News) Mon, 2001-08-20 00:00 With Much Promise For Missile Defense And Industry, Lab Develops Powerful Laser (New Technology News) Thu, 2001-08-16 00:00 DOE Grants Encourage Computers with Muscle (Daily Press) Thu, 2001-08-16 00:00 U.S. Department of Energy Approves Funds for Supercomputer Updates (Burrelle's) Mon, 2001-08-13 00:00

  7. 2006 - 11 | Jefferson Lab

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

    1 Nov 2006 Thu, 2006-11-16 00:00 Jefferson Lab attracts record numbers to Geant4 workshop (Cern Courier) Sun, 2006-11-12 00:00 Jefferson Lab laser sets power record (Richmond Times-Dispatch) Fri, 2006-11-10 00:00 Goal: To make Hampton Roads a center for the cutting edge (The Virginian-Pilot) Fri, 2006-11-10 00:00 Free-electron laser shines at over 14 kilowatts in the infrared (Innovations Report) Thu, 2006-11-09 00:00 JLab FEL Breaks Power Record (Photonics.com) Thu, 2006-11-09 00:00 Free

  8. Jefferson Lab Names Chief Technology Officer | Jefferson Lab

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

    Chief Technology Officer Jefferson Lab Names Chief Technology Officer NEWPORT NEWS, VA, Feb. 19, 2009 - The Department of Energy's Thomas Jefferson National Accelerator Facility today announced the appointment of Roy Whitney as its chief technology officer. In the position, Whitney will be responsible for fostering technology development and enhancing the lab's technology transfer program. "My focus will be to lead Jefferson Lab's efforts to expand its technology development efforts and to

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

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

    Wins 2011 Lawrence Award Jefferson Lab Scientist Wins 2011 Lawrence Award NEWPORT NEWS, VA, Nov. 28 - A Jefferson Lab scientist has received a prestigious national award from the U.S. Department of Energy that recognizes his leadership role in research and development in support of the department and its missions. Matt Poelker, a scientist with Jefferson Lab's accelerator division, was one of just nine winners of a 2011 Ernest Orlando Lawrence Award. Each winner receives a gold medal, a citation

  10. Jefferson Lab News - Jefferson Lab Lecture to Celebrate 50th Anniversary of

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

    the Laser | Jefferson Lab Lecture to Celebrate 50th Anniversary of the Laser Jefferson Lab Lecture to Celebrate 50th Anniversary of the Laser NEWPORT NEWS, VA, Nov. 14, 2007 -- The topic of Jefferson Lab's Dec. 4 public lecture will be The Laser at 50. Join Jefferson Lab's chief optical scientist, Dr. Michelle Shinn, as she discusses the advancements of the laser and performs demonstrations with light. There was a time not so long ago that the laser was "a solution looking for a

  11. ILC Treatment of JLab Cavity Garners Exciting Result | Jefferson Lab

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

    Treatment of JLab Cavity Garners Exciting Result ILC Treatment of JLab Cavity Garners Exciting Result Accelerator cavitiy HG-6 was electropolished with a recipe developed by ILC research and custom-tailored here at Jefferson Lab. Accelerator cavities for the ILC and Jefferson Lab's two accelerators are all similar in material and function. For the last few years, Jefferson Lab staff members have used the lab's unique facilities to test various accelerator components for a proposed

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

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

    Completion of Accelerator Upgrade Construction Governor to Join Jefferson Lab in Celebrating Completion of Accelerator Upgrade Construction CEBAF Race Track This aerial photo ...

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

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

    1990s and building Jefferson Lab's Continuous Electron Beam Accelerator was in high gear. The Accelerator Division was busy installing some 30 vacuum ion pumps in the tunnel....

  14. Jefferson Lab: Research Highlights

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

    Accelerator Public Interest Nuclear Physics Accelerator FEL Medical Imaging Engineering Archive print version SRF Technology SRF Cavities from Single-Crystal Niobium Low-Temperature RadioFrequency Feedthrough For CW Applications Cavity Processing and Procedure Improvements Energy-Recovering Linacs SRF-Based Energy-Recovering Linear Accelerators (ERLs) Electron Source Injector Advance: The Superlattice Photocathode Fiber-Based Drive Lasers Accelerator SRF Cavities from Single-Crystal Niobium

  15. On Target December 2014 | Jefferson Lab

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

    ... Back to the Top>>> The On Target newsletter is published by the Thomas Jefferson National Accelerator Facility (Jefferson Lab), a nuclear physics research laboratory in Newport ...

  16. Berkeley Lab

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

    Berkeley Lab Scientists Teach Bacterium a New Trick for Artificial Photosynthesis http:www.lbl.gov20160108berkeley-lab-scientists-teach-bacterium-a-new-trick-for-artificial-p...

  17. Lab-Corps Fact Sheet

    Broader source: Energy.gov [DOE]

    This fact sheet provides an overview of the Lab-Corps program, which is a specialized training curriculum aimed at accelerating the transfer of clean energy technologies from national laboratories into the commercial marketplace.

  18. From laser particle acceleration to the synthesis of extremely neutron rich isotopes via the novel fission-fusion mechanism

    SciTech Connect (OSTI)

    Thirolf, P. G.

    2015-02-24

    High-power, short pulse lasers have emerged in the last decade as attractive tools for accelerating charged particles (electrons, ions) to high energies over mm-scale acceleration lengths, thus promising to rival conventional acceleration techniques in the years ahead. In the first part of the article, the principles of laser-plasma interaction as well as the techniques and the current status of the acceleration of electron and ion beams will be briefly introduced. In particular with the upcoming next generation of multi-PW class laser systems, such as the one under construction for the ELI-Nuclear Physics project in Bucharest (ELI-NP), very efficient acceleration mechanisms for brilliant ion beams like radiation pressure acceleration (RPA) come into reach. Here, ultra-dense ion beams reaching solid-state density can be accelerated from thin target foils, exceeding the density of conventionally accelerated ion beams by about 14 orders of magnitude. This unique property of laser-accelerated ion beams can be exploited to explore the scenario of a new reaction mechanism called fission-fusion, which will be introduced in the second part of the article. Accelerating fissile species (e.g. {sup 232}Th) towards a second layer of the same material will lead to fission both of the beam-like and target-like particles. Due to the close to solid-state density of the accelerated ion bunches, fusion may occur between neutron-rich (light) fission products. This may open an access path towards extremely neutron-rich nuclides in the vicinity of the N=126 waiting point of the astrophysical r process. Waiting points at closed nucleon shells play a crucial role in controlling the reaction rates. However, since most of the pathway of heavy-element formation via the rapid-neutron capture process (r-process) runs in terra incognita of the nuclear landscape, in particular the waiting point at N=126 is yet unexplored and will remain largely inaccessible to conventional nuclear

  19. The Lab

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

    The Lab The Lab Images of the Lab's world-class facilities and buildings. News Releases Science Briefs Photos Picture of the Week Publications Social Media Videos Fact Sheets PHOTOS BY TOPIC Careers Community Visitors Environment History Science The Lab Click thumbnails to enlarge. Photos arranged by most recent first, horizontal formats before vertical. See Flickr for more sizes and details. LANL buildings at Technical Area 3 LANL buildings at Technical Area 3 Technical Area 3 early morning

  20. Laser wakefield acceleration of electrons with ionization injection in a pure N{sup 5+} plasma waveguide

    SciTech Connect (OSTI)

    Goers, A. J.; Yoon, S. J.; Elle, J. A.; Hine, G. A.; Milchberg, H. M.

    2014-05-26

    Ionization injection-assisted laser wakefield acceleration of electrons up to 120?MeV is demonstrated in a 1.5?mm long pure helium-like nitrogen plasma waveguide. The guiding structure stabilizes the high energy electron beam pointing and reduces the beam divergence. Our results are confirmed by 3D particle-in-cell simulations.

  1. Target normal sheath acceleration of foil ions by laser-trapped hot electrons from a long subcritical-density preplasma

    SciTech Connect (OSTI)

    Luan, S. X.; Yu, Wei; Shen, B. F.; Xu, Z. Z.; Yu, M. Y.; Zhuo, H. B.; Xu, Han; Wong, A. Y.; Wang, J. W.

    2014-12-15

    In a long subcritical density plasma, an ultrashort ultraintense laser pulse can self-organize into a fast but sub-relativistic propagating structure consisting of the modulated laser light and a large number of trapped electrons from the plasma. Upon impact of the structure with a solid foil target placed in the latter, the remaining laser light is reflected, but the dense and hot trapped electrons pass through the foil, together with the impact-generated target-frontsurface electrons to form a dense hot electron cloud at the back of the target suitable for enhancing target normal sheath acceleration of the target-backsurface ions. The accelerated ions are well collimated and of high charge and energy densities, with peak energies a full order of magnitude higher than that from target normal sheath acceleration without the subcritical density plasma. In the latter case, the space-charge field accelerating the ions is limited since they are formed only by the target-frontsurface electrons during the very short instant of laser reflection.

  2. Dynamics of ionization-induced electron injection in the high density regime of laser wakefield acceleration

    SciTech Connect (OSTI)

    Desforges, F. G.; Paradkar, B. S. Ju, J.; Audet, T. L.; Maynard, G.; Cros, B.; Hansson, M.; Senje, L.; Persson, A.; Lundh, O.; Wahlström, C.-G.; Dobosz-Dufrénoy, S.; Monot, P.; Vay, J.-L.

    2014-12-15

    The dynamics of ionization-induced electron injection in high density (∼1.2 × 10{sup 19} cm{sup −3}) regime of laser wakefield acceleration is investigated by analyzing the betatron X-ray emission. In such high density operation, the laser normalized vector potential exceeds the injection-thresholds of both ionization-injection and self-injection due to self-focusing. In this regime, direct experimental evidence of early on-set of ionization-induced injection into the plasma wave is given by mapping the X-ray emission zone inside the plasma. Particle-In-Cell simulations show that this early on-set of ionization-induced injection, due to its lower trapping threshold, suppresses the trapping of self-injected electrons. A comparative study of the electron and X-ray properties is performed for both self-injection and ionization-induced injection. An increase of X-ray fluence by at least a factor of two is observed in the case of ionization-induced injection due to increased trapped charge compared to self-injection mechanism.

  3. Organization Charts | Jefferson Lab

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

    Organization Charts Jefferson Lab Organizational Chart 12 GeV Project Organization Accelerator Operations, Research & Development Division Chief Operating Officer Chief Financial Officer Information Technology Division & Chief Information Office Engineering Division Environment, Safety, Health & Quality Experimental Nuclear Physics Division Theory Center

  4. 2016 - 05 | Jefferson Lab

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

    5 May 2016 Thu, 2016-05-26 09:33 Jefferson Lab to Test its Tornado Warning Siren Thu, 2016-05-12 11:12 Award enables research for more efficient accelerators Mon, 2016-05-02 15:00 JLab to Test its Tornado Warning Siren on Friday May 6

  5. 2009 - 11 | Jefferson Lab

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

    1 Nov 2009 Wed, 2009-11-18 13:00 Proton's party pals may alter its internal structure Tue, 2009-11-10 13:00 First Director Named for Center for Accelerator Science Wed, 2009-11-04 13:00 Jefferson Lab Dec. 9 Science Lecture Discusses How Visual Illusions Trick the Mind

  6. 2001 - 04 | Jefferson Lab

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

    4 Apr 2001 Sun, 2001-04-22 00:00 Doors to Discovery (Daily Press) Thu, 2001-04-19 00:00 Peek in Jefferson Lab (Daily Press) Tue, 2001-04-17 00:00 Electron Accelerator Made a Top Priority (The Virginian-Pilot

  7. Dr. Yuan Ping Lawrence Livermore National Lab

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

    Creating, diagnosing and controlling high-energy- density matter with lasers Dr. Yuan Ping Lawrence Livermore National Lab Tuesday, Oct 22, 2013 - 3:00PM MBG AUDITORIUM ...

  8. 2006 - 04 | Jefferson Lab

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

    4 Apr 2006 Sun, 2006-04-23 14:00 Jefferson Lab News - HAPPEx II reveals proton isn't very strange Mon, 2006-04-10 14:00 Free-Electron Laser Targets Fat Wed, 2006-04-05 14:00 Landscaping company wins annual small business award

  9. 1997 - 07 | Jefferson Lab

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

    7 Jul 1997 Thu, 1997-07-24 00:00 Laser Losing an Ally (Washington Bureau) Thu, 1997-07-24 00:00 Fixing Others' Dreams (Daily Press) Tue, 1997-07-01 00:00 Scientists Report First Experimental Results from Jefferson Lab (Daily Press

  10. 1997 - 10 | Jefferson Lab

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

    0 Oct 1997 Tue, 1997-10-21 00:00 Grunder to Talk on Jefferson Lab (Oak Ridger) Thu, 1997-10-16 00:00 Income Hike on Horizon (Daily Press) Wed, 1997-10-01 00:00 Super Laser Nearly Complete (News-Press, Burrelle's

  11. 2006 - 12 | Jefferson Lab

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

    2 Dec 2006 Mon, 2006-12-18 00:00 For laser at Jefferson Lab, it's 'pick a wavelength' (The Virginian-Pilot) Mon, 2006-12-18 00:00 H. Frederick Dylla to Head the American Institute of Physics (Interactions.org

  12. Lab Plan | The Ames Laboratory

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

    Lab Plan Ames Laboratory

  13. More Than 12,000 Explore Jefferson Lab During Open House | Jefferson Lab

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

    More Than 12,000 Explore Jefferson Lab During Open House Setting a new event record, more than 12,000 people attended Jefferson Lab's open house on April 30, 2016. Assisted by more than 450 volunteers, visitors explored nearly all of the major facilities at the lab, including the CEBAF accelerator, three of the lab's four experimental halls, the Low Energy Recirculator Facility, the Superconducting Radiofrequency Institute and the Data Center. More Than 12,000 Explore Jefferson Lab During April

  14. First Pass | Jefferson Lab

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

    First Pass First Pass February 25, 2014 The 12 GeV Upgrade Project at Jefferson Lab has many facets, and it is designed in such a way that some parts are completed and working while others are still in preparation. Recently, we have achieved a notable milestone. The accelerator commissioning was able to demonstrate 2.2 GeV of acceleration in a single pass around the upgraded accelerator. We have seen the completion of the bulk of civil construction work with the Central Helium Liquefier (CHL)

  15. 1997 - 04 | Jefferson Lab

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

    April 1997 Sun, 04201997 - 11:00pm Free-Electron Lasers for U.S. Industry (Science & Technology) Thu, 04171997 - 11:00pm Accelerating Into Physics (Daily Press) Mon, 04071997...

  16. 2006 - 11 | Jefferson Lab

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

    1 Nov 2006 Mon, 2006-11-27 14:00 Reaching New Heights in Accelerator Technology Wed, 2006-11-08 14:45 Researchers' Hottest New Laser Beams 14.2 kW

  17. Jefferson Lab Photos | Jefferson Lab

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

    Jefferson Lab Photos Images on the Jefferson Lab website that are in the public domain may be used without permission. If you use images from the Jefferson Lab website, it is requested that you credit Jefferson Lab as the source, unless an image is used in an advertisement. As a courtesy, you can also inform Jefferson Lab of your intended use of a photo by sending an e-mail to jlabinfo@jlab.org. Please note that some images on the website may have been obtained from other organizations and will

  18. Bidimensional Particle-In-Cell simulations for laser-driven proton acceleration using ultra-short, ultra-high contrast laser

    SciTech Connect (OSTI)

    Scisciò, M.; Palumbo, L.; D'Humières, E.; Fourmaux, S.; Kieffer, J. C.; Antici, P.

    2014-12-15

    In this paper, we report on bi-dimensional Particle-In-Cell simulations performed in order to reproduce the laser-driven proton acceleration obtained when a commercial 200 TW Ti:Sa Laser hits a solid target. The laser-to prepulse contrast was enhanced using plasma mirrors yielding to a main-to-prepulse contrast of ∼10{sup 12}. We varied the pulse duration from 30 fs to 500 fs and the target thickness from 30 nm to several tens of μm. The on-target laser energy was up to 1.8 J leading to an intensity in excess of 10{sup 20 }W cm{sup −2}. A comparison between numerical and existing experimental data [S. Fourmaux et al., Phys. Plasmas 20, 013110 (2013)] is performed, showing a good agreement between experimental results and simulations which confirms that for ultra-thin targets there is an optimum expansion regime. This regime depends on the target thickness and on the laser intensity: if the target is too expanded, the laser travels through the target without being able to deposit its energy within the target. If the target is not sufficiently expanded, the laser energy is reflected by the target. It is important to note that maximum proton energies are reached at longer pulse durations (in the 100 fs regime) than what is currently the best compression pulse length for this type of lasers (typically 20–30 fs). This duration, around 50–100 fs, can be considered a minimum energy transfer time between hot electrons to ions during the considered acceleration process.

  19. Ion cascade acceleration from the interaction of a relativistic femtosecond laser pulse with a narrow thin target

    SciTech Connect (OSTI)

    He Feng; Xu Han; Tian Youwei; Yu Wei; Lu Peixiang; Li Ruxin

    2006-07-15

    Particle-in-cell simulations are performed to study the acceleration of ions due to the interaction of a relativistic femtosecond laser pulse with a narrow thin target. The numerical results show that ions can be accelerated in a cascade by two electrostatic fields if the width of the target is smaller than the laser beam waist. The first field is formed in front of the target by the central part of the laser beam, which pushes the electron layer inward. The major part of the abaxial laser energy propagates along the edges to the rear side of the target and pulls out some hot electrons from the edges of the target, which form another electrostatic field at the rear side of the target. The ions from the front surface are accelerated stepwise by these two electrostatic fields to high energies at the rear side of the target. The simulations show that the largest ion energy gain for a narrow target is about four times higher than in the case of a wide target.

  20. Modeling of 10 GeV-1 TeV laser-plasma accelerators using Lorentz booster simulations

    SciTech Connect (OSTI)

    Vay, J.-L.; Geddes, C.G.R.; Esarey, E.; Esarey, E.; Leemans, W.P.; Cormier-Michel, E.; Grote, D.P.

    2011-12-01

    Modeling of laser-plasma wakefield accelerators in an optimal frame of reference [J.-L. Vay, Phys. Rev. Lett. 98 130405 (2007)] allows direct and e#14;fficient full-scale modeling of deeply depleted and beam loaded laser-plasma stages of 10 GeV-1 TeV (parameters not computationally accessible otherwise). This verifies the scaling of plasma accelerators to very high energies and accurately models the laser evolution and the accelerated electron beam transverse dynamics and energy spread. Over 4, 5 and 6 orders of magnitude speedup is achieved for the modeling of 10 GeV, 100 GeV and 1 TeV class stages, respectively. Agreement at the percentage level is demonstrated between simulations using different frames of reference for a 0.1 GeV class stage. Obtaining these speedups and levels of accuracy was permitted by solutions for handling data input (in particular particle and laser beams injection) and output in a relativistically boosted frame of reference, as well as mitigation of a high-frequency instability that otherwise limits effectiveness.

  1. More News | Jefferson Lab

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

    Aug 2016 Fri, 08/26/2016 - 03:46pm Jefferson Lab to Test its Tornado Warning Siren at 10:30 a.m. on Friday, Sept. 2 NEWPORT NEWS, Va., Aug. 31, 2016 - The Thomas Jefferson National Accelerator Facility will conduct the monthly test of its tornado warning siren at 10:30 a.m. on Friday, Sept. 2. Depending on weather conditions at the time of the test, the siren could be heard by anyone within a 1.5-mile radius of the lab. The test will be carried out over a period that could last up to three

  2. 2015 - 04 | Jefferson Lab

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

    4 Apr 2015 Wed, 2015-04-29 10:02 Oak Ridge Director Thom Mason to lecture on "Big Science" at the Science Museum of Virginia Wed, 2015-04-29 10:00 Jefferson Lab to Test its Tornado Warning Siren at 10:30 a.m. on Friday, May 1 Wed, 2015-04-29 09:59 International Particle Accelerator Community Prepares for May 3-8 Gathering in Richmond Thu, 2015-04-02 14:01 Jefferson Lab to Test its Tornado Warning Siren at 10:30 a.m. on Friday, April 3

  3. 2008 - 09 | Jefferson Lab

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

    9 Sep 2008 Fri, 2008-09-19 15:00 ODU establishes a Center for Accelerator Science Mon, 2008-09-15 15:00 DOE's Jefferson Lab Receives Approval To Start Construction of $310 Million Upgrade Wed, 2008-09-10 15:00 Moving Quarks Help Solve Proton Spin Puzzle Tue, 2008-09-09 15:00 Have Fun With Astronomy at JLab on Oct. 14 Mon, 2008-09-08 15:00 Jefferson Lab Invites Classes, Groups to 2008-2009 Physics Fests

  4. 2004 - 04 | Jefferson Lab

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

    4 Apr 2004 Tue, 2004-04-27 00:00 A Region Better Than Advertised (Virginian-Pilot) Tue, 2004-04-20 00:00 Accelerator Facility Closer to Upgrade (Richmond Times-Dispatch) Tue, 2004-04-20 00:00 Energy Department announces $225 million for lab (The Virginian-Pilot) Tue, 2004-04-20 00:00 Jefferson Lab vies for expansion (Daily Press) Mon, 2004-04-19 00:00 GlueX Gets a Boost (ScienceNOW) Thu, 2004-04-15 00:00 The College, NASA and the Nanotube (DOG Street Journal

  5. Berkeley Lab

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

    Berkeley Lab masthead U.S. Department of Energy logo Phone Book Jobs Search sun abstract Helios logo Overview Goals & Challenges Publications Research Highlights In the News SERC...

  6. Jefferson Lab Leadership Council - Claus Rode

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

    Amber Boehnlein Amber Boehnlein Chief Information Officer Amber Boehnlein is Jefferson Lab's Chief Information Officer. As CIO, she is responsible for the lab's Information Technology Division as well as the lab's IT systems, including scientific data analysis, high-performance computing, IT infrastructure and cyber security. Boehnlein arrived at Jefferson Lab in June 2015 with extensive knowledge, skills and experience from her years at SLAC National Accelerator Laboratory, a Department of

  7. Christoph Leeman becomes Jefferson Lab's first Deputy Director | Jefferson

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

    Lab Leeman becomes Jefferson Lab's first Deputy Director Christoph Leeman becomes Jefferson Lab's first Deputy Director August 31, 2000 Christoph W. Leemann is Jefferson Lab's first Deputy Director. Lab Director Hermann Grunder recently announced Leemann's appointment to the new position at the Department of Energy's Thomas Jefferson National Accelerator Facility. As Deputy Director, Leemann will oversee the day-to-day operations of Jefferson Lab, located in Newport News, Va. His priorities

  8. 2011 | Jefferson Lab

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

    Dec 2011 Sun, 2011-12-04 00:00 From Nepal to JLab â€" One Scientist's Journey (Daily Press) Aug 2011 Wed, 2011-08-31 00:00 MOU signed between CIAE and Jefferson National Lab, USA. (China Nuclear Industry News, General News) Mar 2011 Wed, 2011-03-16 00:00 JLab Mourns Loss of Dr. Brad Tippens, Dept. of Energy (A Message from Dr. Timothy Hallman, DOE) Feb 2011 Mon, 2011-02-21 00:00 Jefferson Lab: Laser gun to eventually shoot down missiles (Daily Press) Sun, 2011-02-20 00:00 Navy Breaks

  9. 2015 - 07 | Jefferson Lab

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    7 Jul 2015 Wed, 2015-07-29 15:55 JLab's Governor's School Mentorship Program Seeks Volunteer Mentors for 2015-16 School Year Thu, 2015-07-23 09:13 Laser Safety Orientation SAF114O Fri, 2015-07-17 13:17 CEBAF Center Roof Work to Impact Parking Lot, Loading Dock Area Thu, 2015-07-16 09:43 Video Link to DOE Deputy Secretary's July 7 All-Hands Meeting in CC Auditorium Sun, 2015-07-12 18:05 Reduced Graphic Arts Support at Jefferson Lab During Remainder of July and August Sun, 2015-07-12 18:00 Lab

  10. 2015 - 10 | Jefferson Lab

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

    0 Oct 2015 Fri, 2015-10-30 09:15 The winning tickets for the United Way Raffle Mon, 2015-10-26 13:38 Tailgate Party Moved to Thursday, Oct. 29: Lab Staff & Users Invited, Volunteers Still Needed Thu, 2015-10-15 16:04 SAF 114O Laser Safety Orientation Training Fri, 2015-10-09 08:44 Supervisor/Manager Training Fri, 2015-10-02 15:11 Severe Weather Update: JLab Remains in HPC-2 for Nor'easter & Hurricane Fri, 2015-10-02 12:12 Instructions to Determine the Jefferson Lab Status Fri, 2015-10-02

  11. Acceleration of highly charged GeV Fe ions from a low-Z substrate by intense femtosecond laser

    SciTech Connect (OSTI)

    Nishiuchi, M. Sakaki, H.; Esirkepov, T. Zh.; Pirozhkov, A. S.; Sagisaka, A.; Ogura, K.; Kiriyama, H.; Fukuda, Y.; Kando, M.; Bulanov, S. V.; Kondo, K.; Nishio, K.; Orlandi, R.; Koura, H.; Imai, K.; Pikuz, T. A.; Faenov, A. Ya.; Skobelev, I. Yu.; Sako, H.; Matsukawa, K.; and others

    2015-03-15

    Almost fully stripped Fe ions accelerated up to 0.9?GeV are demonstrated with a 200 TW femtosecond high-intensity laser irradiating a micron-thick Al foil with Fe impurity on the surface. An energetic low-emittance high-density beam of heavy ions with a large charge-to-mass ratio can be obtained, which is useful for many applications, such as a compact radio isotope source in combination with conventional technology.

  12. Plasma wakefields driven by an incoherent combination of laser pulses: A path towards high-average power laser-plasma accelerators

    SciTech Connect (OSTI)

    Benedetti, C.; Schroeder, C. B.; Esarey, E.; Leemans, W. P.

    2014-05-15

    The wakefield generated in a plasma by incoherently combining a large number of low energy laser pulses (i.e., without constraining the pulse phases) is studied analytically and by means of fully self-consistent particle-in-cell simulations. The structure of the wakefield has been characterized and its amplitude compared with the amplitude of the wake generated by a single (coherent) laser pulse. We show that, in spite of the incoherent nature of the wakefield within the volume occupied by the laser pulses, behind this region, the structure of the wakefield can be regular with an amplitude comparable or equal to that obtained from a single pulse with the same energy. Wake generation requires that the incoherent structures in the laser energy density produced by the combined pulses exist on a time scale short compared to the plasma period. Incoherent combination of multiple laser pulses may enable a technologically simpler path to high-repetition rate, high-average power laser-plasma accelerators, and associated applications.

  13. Guiding and collimation of laser-accelerated proton beams using thin foils followed with a hollow plasma channel

    SciTech Connect (OSTI)

    Xiao, K. D.; Zhou, C. T.; Qiao, B.; He, X. T.

    2015-09-15

    It is proposed that guided and collimated proton acceleration by intense lasers can be achieved using an advanced target—a thin foil followed by a hollow plasma channel. For the advanced target, the laser-accelerated hot electrons can be confined in the hollow channel at the foil rear side, which leads to the formation of transversely localized, Gaussian-distributed sheath electric field and resultantly guiding of proton acceleration. Further, due to the hot electron flow along the channel wall, a strong focusing transverse electric field is induced, taking the place of the original defocusing one driven by hot electron pressure in the case of a purely thin foil target, which results in collimation of proton beams. Two-dimensional particle-in-cell simulations show that collimated proton beams with energy about 20 MeV and nearly half-reduced divergence of 26° are produced at laser intensities 10{sup 20 }W/cm{sup 2} by using the advanced target.

  14. Jefferson Lab Leadership Council - Dr. Andrew Hutton

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

    Accelerator Associate Director, Dr. Andrew Hutton Andrew Hutton Associate Director of the Accelerators Dr. Andrew Hutton is the Associate Director of Accelerators at Jefferson Lab, heading a Division of 150 accelerator scientists, engineers and technicians. He has more than 40 years of experience in all aspects of forefront accelerator projects (LEP, SLC, PEP-II, CEBAF - the Continuous Electron Beam Accelerator Facility) including project definition, design, creating a project team,

  15. Propagation and stability characteristics of a 500-m-long laser-based fiducial line for high-precision alignment of long-distance linear accelerators

    SciTech Connect (OSTI)

    Suwada, Tsuyoshi; Satoh, Masanori; Telada, Souichi; Minoshima, Kaoru

    2013-09-15

    A laser-based alignment system with a He-Ne laser has been newly developed in order to precisely align accelerator units at the KEKB injector linac. The laser beam was first implemented as a 500-m-long fiducial straight line for alignment measurements. We experimentally investigated the propagation and stability characteristics of the laser beam passing through laser pipes in vacuum. The pointing stability at the last fiducial point was successfully obtained with the transverse displacements of ±40 μm level in one standard deviation by applying a feedback control. This pointing stability corresponds to an angle of ±0.08 μrad. This report contains a detailed description of the experimental investigation for the propagation and stability characteristics of the laser beam in the laser-based alignment system for long-distance linear accelerators.

  16. 2006 - 04 | Jefferson Lab

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

    4 Apr 2006 Sun, 2006-04-23 00:00 HAPPEx II reveals proton isn't very strange Thu, 2006-04-20 00:00 Pudge and pimples, watch out! (Times-Dispatch) Thu, 2006-04-13 00:00 Zapping fat, zits (Daily Press) Thu, 2006-04-13 00:00 New Jeff Lab contract offers 'stability' (Daily Press) Thu, 2006-04-13 00:00 New Laser Targets Fat (Ivanhoe Newswire) Thu, 2006-04-13 00:00 Science lab contract includes ODU, NSU (The Virginian-Pilot) Thu, 2006-04-13 00:00 Jefferson Lab Awarded A $5 Million Contract (WTKR Your

  17. The Radiation Reaction Effect on Electrons at Super-High Laser Intensities with Application to Ion Acceleration

    SciTech Connect (OSTI)

    Naumova, N. M.; Sokolov, I. V.; Tikhonchuk, V. T.; Schlegel, T.; Nees, J. A.; Yanovsky, V. P.; Labaune, C.; Mourou, G. A.

    2009-07-25

    At super-high laser intensities the radiation back reaction on electrons becomes so significant that its influence on laser-plasma interaction cannot be neglected while simulating these processes with particle-in-cell (PIC) codes. We discuss a way of taking the radiation effect on electrons into account and extracting spatial and frequency distributions of the generated high-frequency radiation. We also examine ponderomotive acceleration of ions in the double layer created by strong laser pulses and we compare an analytical description with PIC simulations as well. We discuss: (1) non-stationary features found in simulations, (2) electron cooling effect due to radiation losses, and (3) the limits of the analytical model.

  18. Jefferson Lab: Research Highlights

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

    Engineering Archive print version Public Interest Neutrons and Quarks Share Dual Nature A Bigger Chill Nuclear Pairs Circuit Board Enhances Data Collection, Saves on Cabling JLab Technology Saves Energy and Money in Cooling RHIC 'Skinny' Pions Sail Through Nucleus Imager Spots and Samples Tiny Tumors Digital Self-Excited Loop Makes Accelerator Tuning a Breeze Spin in the Neutron Particles Cling to Mass in the Nucleus Jefferson Lab Boasts Virginia's Fastest Computer Dust Defeats Germ-Killing

  19. Jefferson Lab Information Resources

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

    Lab Libraries Give us your Feedback AVS Historical Book Collection Whats New ! Mobile Catalog Access Cryocooler fundamentals and space applications course notes AIP Digital Archives Applied Physics Letters Journal of Applied Physics Review of Scientific Instruments AIP Proceedings Alerts Elsevier Freedom Collection Particle Accelerator Proceedings IEEE.tv IOPScience Collection CRCnetBase CRC Handbook to Physics/Chemistry MIT Radiation Series Nature Journals complete list OSA Journals Springer

  20. Local firms benefit from Jefferson Lab upgrade | Jefferson Lab

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

    Local firms benefit from Jefferson Lab upgrade Local firms benefit from Jefferson Lab upgrade Michael Schwartz, Staff Writer Inside Business, February 16, 2009 Just two months into the year, the $310 million upgrade at the U.S. Department of Energy's Thomas Jefferson National Accelerator Facility is already paying off for local companies. A $14.1 million contract awarded earlier this month to S.B. Ballard made the Virginia Beach-based construction company the second local firm to reap the

  1. Jefferson Lab to Conduct Emergency Response Exercise | Jefferson Lab

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

    to Conduct Emergency Response Exercise Jefferson Lab to Conduct Emergency Response Exercise on Aug. 9 NEWPORT NEWS, VA, Aug. 9, 2016 - Today, City of Newport News first responders and staff at the Thomas Jefferson National Accelerator Facility will participate in an emergency response exercise. The objective of the exercise is to provide a training opportunity for members of the lab community and for Newport News emergency responders. Local fire department personnel plan to participate in the

  2. Jefferson Lab Plans Open House for May 19 | Jefferson Lab

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

    Plans Open House for May 19 Jefferson Lab Plans Open House for May 19 NEWPORT NEWS, Va., April 20, 2012 -- The U.S. Department of Energy's Thomas Jefferson National Accelerator Facility will hold an Open House on Saturday, May 19 between 9 a.m. and 3 p.m. Several of the lab's facilities will be open to the public, and visitors will be able to see and hear about the research underway at the lab. The event will include a number of firsts, including the first opportunity for the public to visit

  3. Berkeley Lab

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

    The Berkeley Lab Learning Institute (BLI) website is a resource with links to a wide range of online and offsite opportunities. The following pages provide links to internal and...

  4. Lab Astrophysics

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

    lab astrophysics Lab Astrophysics NIF experiments support studies relevant to the entire lifecycle of a star, from its formation from cold gas in molecular clouds, through its subsequent slow evolution, and on to what might be a rapid, explosive death. To determine a star's structure throughout the various stages of its life, astrophysicists need NIF's ability to mimic the temperatures (10 to 30 million kelvins or 18 to 54 million degrees Fahrenheit) found in stars' cores. One astrophysics

  5. Contact Jefferson Lab | Jefferson Lab

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

    Contact Jefferson Lab General Inquiries 757-269-7100 News Media Inquiries 757-269-7689 Security/Emergency 757-269-5822 Status Information 757-234-6236 Street Address 12000 Jefferson Avenue Newport News, VA 23606 E-Mail Address jlabinfo@jlab.org To search the lab's staff directory, click here. Contact Page Visiting researchers - dubbed Users - come from across the country and around the world to use the facilities at Jefferson Lab in order to carry out basic physics experiments. Additional Links

  6. Visiting Jefferson Lab | Jefferson Lab

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

    Visiting Jefferson Lab Jefferson Lab is located in Newport News on the southeastern coast of Virginia in an area known as Hampton Roads. Situated between Norfolk and Williamsburg, Newport News is easily accessible by air, automobile and train. Jefferson Lab is one of 17 national laboratories funded by the U.S. Department of Energy. It is a user facility, meaning its unique research tools are available to scientists and college students from around the world. Currently, more than 1,500 users are

  7. Lab-Corps Documents | Department of Energy

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

    Lab-Corps Documents Lab-Corps Documents These documents are related the Tech-to-Market Lab-Corps Pilot. Lab-Corps Pilot Summary The Lab-Corps pilot program has $2.3 million in available funding aimed at accelerating the transfer of innovative clean energy technologies from the Energy Department's national laboratories into the commercial marketplace. To accomplish this, the program has selected a "node" for its national network-the National Renewable Energy Laboratory-to develop a

  8. Preliminary Results of Mono-energetic Electron Beams from a Laser-plasma Accelerator Driven by 200 TW Femto Second Pulses

    SciTech Connect (OSTI)

    Taki, R.; Kameshima, T.; An, W. M.; Hua, J. F.; Huang, W. H.; Tang, C. X.; Gu, Y. Q.; Guo, Y.; Hong, W.; Jiao, C. Y.; Lin, Y. Z.; Liu, H. J.; Peng, H. S.; Sun, L.; Tang, C. M.; Wang, X. D.; Wen, T. S.; Wen, X. L.; Wu, Y. C.; Zhang, B. H.

    2006-11-27

    Relativistic mono-energetic electron beams have been demonstrated by worldwide laser-plasma accelerator experiments in the range of a few tens TW. Laser-plasma accelerator experiment has been carried out with 200TW, 30fs Ti:Sapphire laser pulses focused on helium gas-jets with F/8.7 optics. Intense mono-energetic electron beams have been produced in the energy range of 30 to 150 MeV by controlling plasma length and density precisely. Images of Thomson scattering and fluorescence side scattering from plasma indicate highly relativistic effects such as a long self-channeling and filamentation as well as energetic electron deflection and intense backward Raman scattering. Preliminary results of the first laser-plasma accelerator experiment in the range of 200TW femto second pulses are presented.

  9. Postdocs - Berkeley Lab Postdoc Association

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

    Postdocs - Berkeley Lab Postdoc Association

  10. Jefferson Lab technology, capabilities take center stage in construction of

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

    portion of DOE's Spallation Neutron Source accelerator | Jefferson Lab technology, capabilities take center stage in construction of portion of DOE's Spallation Neutron Source accelerator Medium beta cryomodule JLab staff prepare to load the medium β cryomodule onto a flatbed semi for its road test. Jefferson Lab technology, capabilities take center stage in construction of portion of DOE's Spallation Neutron Source accelerator By James Schultz January 27, 2003 Jefferson Lab is once again

  11. Jefferson Lab Director Awarded Glazebrook Medal | Jefferson Lab

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

    Director Awarded Glazebrook Medal Hugh E. Montgomery Hugh E. Montgomery, director of the Department of Energy's Thomas Jefferson National Accelerator Facility and president of Jefferson Science Associates, LLC, has been awarded the prestigious Glazebrook Medal by the Institute of Physics. Jefferson Lab Director Awarded Glazebrook Medal NEWPORT NEWS, VA, July 5, 2016 - The director of the Department of Energy's Thomas Jefferson National Accelerator Facility and president of Jefferson Science

  12. Jefferson Lab Names New Safety Director | Jefferson Lab

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

    New Safety Director Jefferson Lab Names New Safety Director NEWPORT NEWS, Va., April 9, 2008 - Mary K. Logue, an experienced safety professional responsible for the implementation of the Environment, Health and Safety program at the Department of Energy's Fermi National Accelerator Facility, has been named as the associate director for Environment, Safety, Health and Quality division at Thomas Jefferson National Accelerator Facility. Logue, currently an associate section head for environment,

  13. Jefferson Lab | Exploring the Nature of Matter

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

    Jefferson Lab Jefferson Lab Home About Brochures Contact JLab Director Montage Divisions & Departments Events JLab Video Org Charts Science at JLab Virtual Tour Visiting the Lab Research 12 GeV Accelerator Science Hall A Hall B Hall C Hall D LDRD Low Energy Recirculator Facility Nuclear Physics Radiation Detector & Imaging Recent Experiments SRF Institute Theory Center Users & Visiting Scientists Careers Appraisals Benefits Diversity Employee Assistance Employee Concerns Program

  14. Jefferson Lab Leadership Council - Dr. Andrew Hutton

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

    LCLS II Project Manager, Joseph Prebel Joseph Preble Jefferson Lab LCLS II Project Manager The LCLS II Project Manager serves as the senior team lead for Jefferson Lab work for the Linac Coherent Light Source II (LCLS II) project at SLAC National Accelerator Laboratory and interfaces with other national laboratories that are central in this project. The project manager/senior team lead is responsible for Jefferson Lab attaining all its project objectives and commitments, ensuring that Jefferson

  15. High-power free-electron lasers driven by r-f (radio-frequency) linear accelerators. Memorandum report (Interim)

    SciTech Connect (OSTI)

    Godlove, T.F.; Sprangle, P.

    1989-05-16

    The free-electron laser (FEL) has been developed to the point where projections of its high-power capability have made it an important component of the directed-energy research program within the Strategic Defense Initiative. To achieve the desired near-visible wavelength and high intensity, stringent demands are placed on the electron beam that drives the FEL. Typical requirements are high peak current (0.2 to 2 kA) at a kinetic energy of 100 to 150 MeV, small energy spread (<1%), small diameter (<3mm), and low divergence (<0.1 mrad). Either an induction linear accelerator (linac) or an rf linac may be a suitable candidate to provide the electron beam. This review describes the technical issues and technology needed to achieve a visible light FEL driven by an rf linac. A recently installed linac at Boeing Aerospace is used as the principal illustrative example. Keywords: Free electron laser; Particle accelerator; RF linac; Strategic defense initiative; Electron beam. (jhd)

  16. Proton and Ion Acceleration by BNL Terewatt Picosecond CO2 Laser. New Horizons

    SciTech Connect (OSTI)

    Shkolnikov, Peter

    2014-09-30

    The report covers pioneering research on proton and ion generation in gas jets by the world's first picosecond TW CO2 laser developed at Brookhaven National Laboratory

  17. Jefferson Lab Leadership Council - Dr. Andrew Hutton

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

    GEORGE NEIL Associate Director for FEL Division George Neil is Senior Team Lead for the LCLS-II Project at the Thomas Jefferson National Accelerator Facility (Jefferson Lab), a...

  18. 2013 - 08 | Jefferson Lab

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

    8 Aug 2013 Tue, 2013-08-27 11:23 Jefferson Lab Graphic Identity Standards & Style Guide Now Available Fri, 2013-08-23 23:53 JLab mourns Robert W. (Bob) Rice Thu, 2013-08-15 08:41 TIAA-CREF INDIVIDUAL COUNSELING - September 2013 Tue, 2013-08-06 11:13 HCO Training REQUIRED for 12 GeV Accelerator Operations; Live Session on Aug. 7 Tue, 2013-08-06 11:11 Agilent Seminar DATE CHANGED: Training Set for Aug. 14 MOVED to Sept. 11 Tue, 2013-08-06 11:10 JLab-Wide Phone Outage: Saturday, Aug. 10

  19. 2013 - 12 | Jefferson Lab

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

    2 Dec 2013 Fri, 2013-12-27 09:41 Email Issue And JLab Cybersecurity Alert: Phishing Wed, 2013-12-18 10:39 Notable Event Notice: Dec. 16 Failure to Comply with Posted Signs Tue, 2013-12-17 10:05 Jefferson Lab Three-Year Accelerator Schedule: Calendar Year 2014 - 2016 Wed, 2013-12-11 09:23 GEN034 Annual Security Awareness for Employees & Subcontractors Mon, 2013-12-09 09:34 Travel Policy/Requirements Briefing for Travelers Fri, 2013-12-06 16:12 Pressure Systems Awareness Training Thu,

  20. 2014 - 09 | Jefferson Lab

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

    9 Sep 2014 Tue, 2014-09-30 16:53 Performance Appraisal Process Begins Today, 9/29/2014 Mon, 2014-09-29 15:02 Occupational Medicine Offers Staff Flu Vaccines by Appointment Thu, 2014-09-25 08:45 12 GeV CEBAF Upgrade Celebration to Be Held on Friday Wed, 2014-09-24 17:39 Hall D and Accelerator Service Buildings Radiological Status Change Tue, 2014-09-23 09:35 Got 18 Minutes? Catch a TEDx talk on Wednesday, Sept. 24 Mon, 2014-09-22 17:19 Jefferson Lab Fitness Center Open House Set for Oct. 6, 11:30

  1. Generation of ultra-high-pressure shocks by collision of a fast plasma projectile driven in the laser-induced cavity pressure acceleration scheme with a solid target

    SciTech Connect (OSTI)

    Badziak, J.; Rosiński, M.; Krousky, E.; Kucharik, M.; Liska, R.; Ullschmied, J.

    2015-03-15

    A novel, efficient method of generating ultra-high-pressure shocks is proposed and investigated. In this method, the shock is generated by collision of a fast plasma projectile (a macro-particle) driven by laser-induced cavity pressure acceleration (LICPA) with a solid target placed at the LICPA accelerator channel exit. Using the measurements performed at the kilojoule PALS laser facility and two-dimensional hydrodynamic simulations, it is shown that the shock pressure ∼ Gbar can be produced with this method at the laser driver energy of only a few hundred joules, by an order of magnitude lower than the energy needed for production of such pressure with other laser-based methods known so far.

  2. Lab Organizations

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

    Organizations Lab Organizations National security depends on science and technology. The United States relies on Los Alamos National Laboratory for the best of both. No place on Earth pursues a broader array of world-class scientific endeavors. Los Alamos National Security, LLC Leadership Team Organization Chart PRINCIPAL ASSOCIATE DIRECTORATES Capital Projects, Larry Simmons Global Security, Terry Wallace Operations and Business, Craig Leasure Science, Technology, and Engineering, Alan Bishop

  3. 2008 - 02 | Jefferson Lab

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

    2 Feb 2008 Tue, 2008-02-26 13:00 Media Advisory: March 1 Middle School Science Bowl Tournament Mon, 2008-02-25 14:15 Jefferson Lab Hosts 20 Teams for Middle School Science Bowl on March 1 Wed, 2008-02-20 13:00 Thomas Jefferson High School Wins Virginia Science Bowl for 7th Year Running Fri, 2008-02-15 13:00 George Neil Named to Lead JLab's Free-Electron Laser Program Tue, 2008-02-12 13:00 Civil War Unplugged Tue, 2008-02-05 13:00 Inaugural JSA Postdoctoral Research Fellow Announced

  4. 2000 - 03 | Jefferson Lab

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

    3 Mar 2000 Thu, 2000-03-30 00:00 Jefferson Lab Gets New Funds (Washington Bureau/Daily Press) Mon, 2000-03-27 00:00 Practically Perfect, Prof. (Daily Press) Sat, 2000-03-18 00:00 Navy Will Open Supercomputer Facility for Outside Uses (The Virginian-Pilot) Wed, 2000-03-01 00:00 CLAS at Jefferson Offers a New Subnuclear View (CERN Courier) Wed, 2000-03-01 00:00 Free-Electron Laser Passes 1-kW Goal (Burrelle's

  5. sandia national labs | National Nuclear Security Administration

    National Nuclear Security Administration (NNSA)

    sandia national labs

  6. Advisory Committee Recommends Continued Investment in Jefferson Lab |

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

    Jefferson Lab Advisory Committee Recommends Continued Investment in Jefferson Lab This aerial view of the Continuous Electron Beam Accelerator Facility shows the footprint of the accelerator and the experimental halls where nuclear physics experiments are conducted.The newest experimental facility, dubbed Hall D, which is part of the 12 GeV Upgrade, is visible in the upper left. This aerial view of the Continuous Electron Beam Accelerator Facility shows the footprint of the accelerator and

  7. Jefferson Lab to Test its Tornado Warning Siren | Jefferson Lab

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

    June 3 NEWPORT NEWS, Va., June 1, 2016 - The Thomas Jefferson National Accelerator Facility will conduct the monthly test of its tornado warning siren at 10:30 a.m. on Friday, June 3. Depending on weather conditions at the time of the test, the siren could be heard by anyone within a 1.5-mile radius of the lab. The test will be carried out over a period that could last up to three minutes. The test will be of the wavering tone (also called high-low-high or 10-4-10). Jefferson Lab uses the siren

  8. Jefferson Lab to Test its Tornado Warning Siren | Jefferson Lab

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

    August 5 NEWPORT NEWS, Va., August 2, 2016 - The Thomas Jefferson National Accelerator Facility will conduct the monthly test of its tornado warning siren at 10:30 a.m. on Friday, August 5. Depending on weather conditions at the time of the test, the siren could be heard by anyone within a 1.5-mile radius of the lab. The test will be carried out over a period that could last up to three minutes. The test will be of the wavering tone (also called high-low-high or 10-4-10). Jefferson Lab uses the

  9. Ultra-low emittance beam generation using two-color ionization injection in a CO2 laser-driven plasma accelerator

    SciTech Connect (OSTI)

    Schroeder, Carl; Benedetti, Carlo; Bulanov, Stepan; Chen, Min; Esarey, Eric; Geddes, Cameron; Vay, J.; Yu, Lule; Leemans, Wim

    2015-05-21

    Ultra-low emittance (tens of nm) beams can be generated in a plasma accelerator using ionization injection of electrons into a wakefield. An all-optical method of beam generation uses two laser pulses of different colors. A long-wavelength drive laser pulse (with a large ponderomotive force and small peak electric field) is used to excite a large wakefield without fully ionizing a gas, and a short-wavelength injection laser pulse (with a small ponderomotive force and large peak electric field), co-propagating and delayed with respect to the pump laser, to ionize a fraction of the remaining bound electrons at a trapped wake phase, generating an electron beam that is accelerated in the wake. The trapping condition, the ionized electron distribution, and the trapped bunch dynamics are discussed. Expressions for the beam transverse emittance, parallel and orthogonal to the ionization laser polarization, are presented. An example is shown using a 10-micron CO2 laser to drive the wake and a frequency-doubled Ti:Al2O3 laser for ionization injection.

  10. | Jefferson Lab

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

    Fri, 08/19/2016 - 01:37pm Omnibus Omnibus August 19, 2016 Most of the Montage articles I have posted have addressed a single subject. This is different; I have a number of subjects I will try to cover which characterize the current menu of activities at the Lab. We ran CEBAF during May to provide data for the proton radius (PRAD) experiment, and indeed completed the experiment. During the summer period, we limit operations to benefit from the electricity charge structures provided by Dominion

  11. OMEGA EP Laser Dedication Movie - Laboratory for Laser Energetics

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    Dedication Movie - Laboratory for Laser Energetics Laboratory for Laser Energetics Logo Search Home Around the Lab Past Issues Past Quick Shots About Office of the Director Map to ...

  12. Safety Comes First | Jefferson Lab

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    Safety Comes First Safety Comes First When it comes to providing for the safety of employees and visiting researchers and protecting the environment, the Thomas Jefferson National Accelerator Facility is one of the best. "I don't compare the labs, but the results here are very good," said Thomas Staker, who led a team of inspectors that conducted an extensive inspection of environment, safety and health programs at Jefferson Lab in May and June. Staker is director of the U.S.

  13. Latest News Releases | Jefferson Lab

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    Latest News Releases Fri, 08/26/2016 - 03:46pm Jefferson Lab to Test its Tornado Warning Siren at 10:30 a.m. on Friday, Sept. 2 NEWPORT NEWS, Va., Aug. 31, 2016 - The Thomas Jefferson National Accelerator Facility will conduct the monthly test of its tornado warning siren at 10:30 a.m. on Friday, Sept. 2. Depending on weather conditions at the time of the test, the siren could be heard by anyone within a 1.5-mile radius of the lab. The test will be carried out over a period that could last up to

  14. The affect of erbium hydride on the conversion efficience to accelerated protons from ultra-shsort pulse laser irradiated foils

    SciTech Connect (OSTI)

    Offermann, D

    2008-09-04

    This thesis work explores, experimentally, the potential gains in the conversion efficiency from ultra-intense laser light to proton beams using erbium hydride coatings. For years, it has been known that contaminants at the rear surface of an ultra-intense laser irradiated thin foil will be accelerated to multi-MeV. Inertial Confinement Fusion fast ignition using proton beams as the igniter source requires of about 10{sup 16} protons with an average energy of about 3MeV. This is far more than the 10{sup 12} protons available in the contaminant layer. Target designs must include some form of a hydrogen rich coating that can be made thick enough to support the beam requirements of fast ignition. Work with computer simulations of thin foils suggest the atomic mass of the non-hydrogen atoms in the surface layer has a strong affect on the conversion efficiency to protons. For example, the 167amu erbium atoms will take less energy away from the proton beam than a coating using carbon with a mass of 12amu. A pure hydrogen coating would be ideal, but technologically is not feasible at this time. In the experiments performed for my thesis, ErH{sub 3} coatings on 5 {micro}m gold foils are compared with typical contaminants which are approximately equivalent to CH{sub 1.7}. It will be shown that there was a factor of 1.25 {+-} 0.19 improvement in the conversion efficiency for protons above 3MeV using erbium hydride using the Callisto laser. Callisto is a 10J per pulse, 800nm wavelength laser with a pulse duration of 200fs and can be focused to a peak intensity of about 5 x 10{sup 19}W/cm{sup 2}. The total number of protons from either target type was on the order of 10{sup 10}. Furthermore, the same experiment was performed on the Titan laser, which has a 500fs pulse duration, 150J of energy and can be focused to about 3 x 10{sup 20} W/cm{sup 2}. In this experiment 10{sup 12} protons were seen from both erbium hydride and contaminants on 14 {micro} m gold foils. Significant

  15. Laser Manufacturing | GE Global Research

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    Home > Impact > Advanced Laser Manufacturing Tools Deliver Higher Performance Click to ... Advanced Laser Manufacturing Tools Deliver Higher Performance In a research lab looking ...

  16. Supercomputing and Advanced Computing at the National Labs | Department of

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

    Energy Supercomputing and Advanced Computing at the National Labs Supercomputing and Advanced Computing at the National Labs RSS September 30, 2013 Lab Breakthrough: Supercomputing Power to Accelerate Fossil Energy Research Learn how a new supercomputer at the National Energy Technology Laboratory will accelerate research into the next generation of fossil fuel systems. September 26, 2013 Infographic by <a href="/node/379579">Sarah Gerrity</a>, Energy Department.

  17. Jefferson Lab Tech Associate Invents Lockout Device for Equipment with

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

    Removable Power Cords | Jefferson Lab Tech Associate Invents Lockout Device for Equipment with Removable Power Cords Jefferson Lab Tech Associate Invents Lockout Device for Equipment with Removable Power Cords April 22, 2002 It was the early 1990s and building Jefferson Lab's Continuous Electron Beam Accelerator was in high gear. The Accelerator Division was busy installing some 30 vacuum ion pumps in the tunnel. Simultaneously, above ground in the long, low service buildings sitting over

  18. Hampton University Physics Professor, Jefferson Lab Staff Scientist Winner

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    of Annual State Outstanding Faculty Award | Jefferson Lab Physics Professor, Jefferson Lab Staff Scientist Winner of Annual State Outstanding Faculty Award Hampton University Physics Professor, Jefferson Lab Staff Scientist Winner of Annual State Outstanding Faculty Award March 2, 2000 A Staff scientist from the Department of Energy's Thomas Jefferson National Accelerator Facility (Jefferson Lab), who is also an assistant professor at Hampton University, received the Commonwealth of

  19. Jefferson Lab Project Team Receives Department of Energy Award | Jefferson

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    Lab Pictured are office, meeting and work center areas in the Technology and Engineering Development Facility. Jefferson Lab Project Team Receives Department of Energy Award Newport News, Va., April 29, 2014 - A project team at the U.S. Department of Energy's Thomas Jefferson National Accelerator Facility - or Jefferson Lab - recently received a DOE Secretary's Achievement Award for creating a new building complex that will advance the lab's unique capabilities in superconducting

  20. Multistage ion acceleration in finite overdense target with a relativistic laser pulse

    SciTech Connect (OSTI)

    Sinha, Ujjwal [Institute for Plasma Research, Bhat, Gandhinagar 382428 (India)] [Institute for Plasma Research, Bhat, Gandhinagar 382428 (India)

    2013-07-15

    Multistage ion acceleration has been analytically and computationally studied in the relativistic regime. For non-relativistic piston velocities, this phenomenon has been described before. But, as we go to relativistic piston velocities, the non-relativistic results hold no more. We have presented a fully relativistic calculation for second stage ion velocities and energies. To verify our calculations, we performed a fully relativistic 1D3V particle in cell simulations using the code LPIC++. It has been found that the relativistic calculations matched very well with the simulation results. Also, it has been seen that at relativistic piston velocities, the non-relativistic results differed by a significant margin. The feasibility of this process has been further established by three dimensional particle in cell simulations.

  1. Study of electron trapping by a transversely ellipsoidal bubble in the laser wake-field acceleration

    SciTech Connect (OSTI)

    Cho, Myung-Hoon; Kim, Young-Kuk; Hur, Min Sup

    2013-09-15

    We present electron trapping in an ellipsoidal bubble which is not well explained by the spherical bubble model by [Kostyukov et al., Phys. Rev. Lett. 103, 175003 (2009)]. The formation of an ellipsoidal bubble, which is elongated transversely, frequently occurs when the spot size of the laser pulse is large compared to the plasma wavelength. First, we introduce the relation between the bubble size and the field slope inside the bubble in longitudinal and transverse directions. Then, we provide an ellipsoidal model of the bubble potential and investigate the electron trapping condition by numerical integration of the equations of motion. We found that the ellipsoidal model gives a significantly less restrictive trapping condition than that of the spherical bubble model. The trapping condition is compared with three-dimensional particle-in-cell simulations and the electron trajectory in test potential simulations.

  2. Jefferson Lab Awards Contract for Next Cluster Computer | Jefferson Lab

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    Awards Contract for Next Cluster Computer Jefferson Lab Awards Contract for Next Cluster Computer February 8, 2007 Newport News, Va. - The U.S. Department of Energy's Thomas Jefferson National Accelerator Facility has awarded the contract for providing the components of its next major cluster computer installation to Koi Computers, a woman-owned, certified Small Disadvantaged Business located in Lombard, Ill. Koi won the $1.1 million contract with its bid to provide 432 dual processor, dual core

  3. Jefferson Lab Engineer Among Nation's Best | Jefferson Lab

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    Engineer Among Nation's Best Jefferson Lab Engineer Among Nation's Best Celia Whitlatch Celia Whitlatch, JLab Mechanical Engineer August 7, 2007 NEWPORT NEWS, VA, Aug. 7 - A mechanical engineer at the Department of Energy's Thomas Jefferson National Accelerator Facility has been named one of the "best and brightest" engineers in the country by HENAAC, formerly known as the Hispanic Engineer National Achievement Awards Conference. Celia Whitlatch, of Seaford, and other winners will be

  4. On Target December 2012 | Jefferson Lab

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    December 2012 December 2012 The U.S. Department of Energy's Thomas Jefferson National Accelerator Facility Mirror Finish May Reflect Good Performance MirrorCavity_DSC_0080.jpg Researchers at Jefferson Lab have buffed the interiors of some accelerator component prototypes to a high-mirror shine in hopes of finding a more environmentally friendly method for manufacturing ever-more-efficient accelerator components. Pictured is one prototype cavity with a highly polished interior surface. Scientists

  5. Jefferson Lab Human Resources

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    Jefferson Lab Emeritus Program Approved by the JSA Compensation Committee Candidature Upon retirement from Jefferson Lab, a former employee may be considered for and appointed to,...

  6. Nuclear Imaging | Jefferson Lab

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    Research Jefferson Lab's Radiation Detector and Imaging Group Members of Jefferson Lab's Radiation Detector & Medical Imaging Group design and build unique imaging devices based on...

  7. 2014 - 06 | Jefferson Lab

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    Awarded 2014 Prize to Support Research Work with Jefferson Lab Thu, 06052014 - 2:57pm Young Physicist from Syracuse University Receives Jefferson Lab's 2014 Thesis Prize...

  8. National Lab Impact Initiative

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

    ... Lab-Corps Teams Have Explored an Array of Market Opportunities Based on Lab Research Unmanned aerial vehicle inspections of wind turbines Optimized control technology for ...

  9. Careers | Jefferson Lab

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    interesting and challenging jobs in pursuit of a greater understanding of the visible universe. Read more Job Openings Careers Jobs at Jefferson Lab Jefferson Lab offers many...

  10. 1997 | Jefferson Lab

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    Jefferson Lab Scientific Motivation and Research Program (Nuclear Physics News) Mon, 03171997 - 12:00am Laboratory Profile: Jefferson Lab Introduction (Nuclear Physics News)...

  11. 2007 - 11 | Jefferson Lab

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    1 Nov 2007 Tue, 2007-11-20 13:00 Jefferson Lab News - Jefferson Lab Achieves Critical Milestone Toward Construction of $310-Million Upgrade Project

  12. Employees | Jefferson Lab

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    Read more Emergency Information Employees Jefferson Lab Emergency Drill Jefferson Lab conducts regular exercises and drills to continually improve safety and emergency procedures...

  13. Jefferson Lab Divisions & Departments

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    Divisions & Departments Privacy and Security Notice Skip over navigation search Search Please upgrade your browser. This site's design is only visible in a graphical browser that supports web standards, but its content is accessible to any browser. Concerns? Jefferson Lab Navigation Home Search News Insight print version Org Charts Directorate Accelerator COO CFO IT/CIO CSO Engineering ESH&Q FEL Physics 12000 Jefferson Avenue, Newport News, VA 23606 Phone: (757) 269-7100 Fax: (757)

  14. Lab Leadership | Princeton Plasma Physics Lab

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

    Lab Breakthroughs Lab Breakthroughs The Lab Breakthroughs series brings together video produced by each of the National Labs about their innovations and discoveries, and a Q&A with a project researcher about how they affect Americans. Here you can view the latest Q&As weekly, or view the <a href="http://www.youtube.com/playlist?list=PL2C4A336D8734B59D">full playlist</a> on our YouTube page. The Lab Breakthroughs series brings together video produced by each of the

  15. On Target July 2009 | Jefferson Lab

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    July 2009 July 2009 The U.S. Department of Energy's Thomas Jefferson National Accelerator Facility JLab Chief Scientist Named Fellowship Winner Jefferson Lab's Groundbreaking Anthony W. "Tony" Thomas, Jefferson Lab's chief scientist, is one of 15 world-leading scholars selected to receive an inaugural Australian Laureate Fellowship. He will return to the University of Adelaide later this year to take up the fellowship and lead the newly created Research Centre for Complex Systems and

  16. 12 GeV Upgrade | Jefferson Lab

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    12 GeV Upgrade Physicists at Jefferson Lab are trying to find answers to some of nature's most perplexing questions about the universe by exploring the nucleus of the atom. Their goal is to answer such questions as: "What is the universe made of?" and "What holds everyday matter together?" In their search for answers, physicists smash electrons into atoms using Jefferson Lab's Continuous Electron Beam Accelerator Facility. CEBAF provides physicists with an unprecedented

  17. National Lab Impact Initiative

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

    Lab Impact Initiative Energy Efficiency & Renewable Energy EERE National Lab Impact Summit Driving American Energy Innovation and Competitiveness May 4, 2016 | 7:30 am-7:00 pm National Renewable Energy Laboratory Golden, Colorado EERE National Lab Impact Summit // i ` http://www.cyclotronroad.org/home TABLE OF CONTENTS Department of Energy National Lab Abbreviations .........................................................................................................ii Welcome Letter

  18. 2011 - 09 | Jefferson Lab

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    09 Sep 2011 Sun, 2011-09-25 15:00 Jefferson Lab Weekly Briefs September 28, 2011 Wed, 2011-09-21 15:00 Jefferson Lab Weekly Briefs September 21, 2011 Wed, 2011-09-14 15:00 Jefferson Lab Weekly Briefs September 14, 2011 Wed, 2011-09-07 15:00 Jefferson Lab Weekly Briefs September 7

  19. 2011 - 10 | Jefferson Lab

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    0 Oct 2011 Wed, 2011-10-26 15:00 Jefferson Lab Weekly Briefs October 26, 2011 Wed, 2011-10-19 15:00 Jefferson Lab Weekly Briefs October 19, 2011 Wed, 2011-10-12 15:00 Jefferson Lab Weekly Briefs October 12, 2011 Wed, 2011-10-05 15:00 Jefferson Lab Weekly Briefs October 5

  20. 2012 - 03 | Jefferson Lab

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    3 Mar 2012 Wed, 2012-03-28 15:00 Jefferson Lab Weekly Briefs March 28, 2012 Wed, 2012-03-21 15:00 Jefferson Lab Weekly Briefs March 21, 2012 Wed, 2012-03-14 15:00 Jefferson Lab Weekly Briefs March 14, 2012 Wed, 2012-03-07 14:00 Jefferson Lab Weekly Briefs March 7

  1. 2012 - 04 | Jefferson Lab

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    4 Apr 2012 Wed, 2012-04-25 15:00 Jefferson Lab Weekly Briefs April 25, 2012 Wed, 2012-04-18 15:00 Jefferson Lab Weekly Briefs April 18, 2012 Wed, 2012-04-11 15:00 Jefferson Lab Weekly Briefs April 11, 2012 Wed, 2012-04-04 15:00 Jefferson Lab Weekly Briefs April 4

  2. 2012 - 06 | Jefferson Lab

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    6 Jun 2012 Wed, 2012-06-27 15:00 Jefferson Lab Weekly Briefs June 27, 2012 Wed, 2012-06-20 15:00 Jefferson Lab Weekly Briefs June 20, 2012 Wed, 2012-06-13 15:00 Jefferson Lab Weekly Briefs June 13, 2012 Wed, 2012-06-06 15:00 Jefferson Lab Weekly Briefs June 6

  3. 2013 - 02 | Jefferson Lab

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    2 Feb 2013 Wed, 2013-02-27 11:05 Jefferson Lab Weekly Briefs February 27, 2013 Wed, 2013-02-20 14:00 Jefferson Lab Weekly Briefs February 20, 2013 Wed, 2013-02-13 14:00 Jefferson Lab Weekly Briefs February 13, 2013 Wed, 2013-02-06 14:00 Jefferson Lab Weekly Briefs February

  4. 2013 - 03 | Jefferson Lab

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    3 Mar 2013 Wed, 2013-03-27 15:55 Jefferson Lab Weekly Briefs March 27, 2013 Wed, 2013-03-20 15:11 Jefferson Lab Weekly Briefs March 20, 2013 Wed, 2013-03-13 18:24 Jefferson Lab Weekly Briefs March 13, 2013 Wed, 2013-03-06 15:12 Jefferson Lab Weekly Briefs March

  5. 2013 - 04 | Jefferson Lab

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    4 Apr 2013 Wed, 2013-04-24 15:22 Jefferson Lab Weekly Briefs April 24, 2013 Wed, 2013-04-17 14:11 Jefferson Lab Weekly Briefs April 17, 2013 Wed, 2013-04-10 14:01 Jefferson Lab Weekly Briefs April 10, 2013 Wed, 2013-04-03 14:52 Jefferson Lab Weekly Briefs April 3

  6. 2013 - 05 | Jefferson Lab

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    5 May 2013 Wed, 2013-05-29 16:05 Jefferson Lab Weekly Briefs May 29, 2013 Wed, 2013-05-15 14:24 Jefferson Lab Weekly Briefs May 15, 2013 Wed, 2013-05-08 14:58 Jefferson Lab Weekly Briefs May 8, 2013 Wed, 2013-05-01 13:39 Jefferson Lab Weekly Briefs May 1

  7. 2013 - 06 | Jefferson Lab

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    6 Jun 2013 Wed, 2013-06-26 14:43 Jefferson Lab Weekly Briefs June 26, 2013 Wed, 2013-06-19 14:08 Jefferson Lab Weekly Briefs June 19, 2013 Wed, 2013-06-12 14:47 Jefferson Lab Weekly Briefs June 12, 2013 Wed, 2013-06-05 14:18 Jefferson Lab Weekly Briefs June 5

  8. 2013 - 08 | Jefferson Lab

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    8 Aug 2013 Wed, 2013-08-28 13:20 Jefferson Lab Weekly Briefs August 28, 2013 Wed, 2013-08-21 13:22 Jefferson Lab Weekly Briefs August 21, 2013 Wed, 2013-08-14 13:50 Jefferson Lab Weekly Briefs August 14, 2013 Wed, 2013-08-07 13:29 Jefferson Lab Weekly Briefs August 7

  9. 2013 - 11 | Jefferson Lab

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    1 Nov 2013 Wed, 2013-11-27 14:31 Jefferson Lab Weekly Briefs November 27, 2013 Wed, 2013-11-20 13:38 Jefferson Lab Weekly Briefs November 20, 2013 Wed, 2013-11-13 15:10 Jefferson Lab Weekly Briefs November 13, 2013 Wed, 2013-11-06 14:33 Jefferson Lab Weekly Briefs November 6

  10. 2014 - 02 | Jefferson Lab

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    2 Feb 2014 Wed, 2014-02-26 17:38 Jefferson Lab Weekly Briefs February 26, 2014 Wed, 2014-02-19 16:38 Jefferson Lab Weekly Briefs February 19, 2014 Wed, 2014-02-12 15:23 Jefferson Lab Weekly Briefs February 12, 2014 Wed, 2014-02-05 16:09 Jefferson Lab Weekly Briefs February

  11. 2014 - 03 | Jefferson Lab

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    3 Mar 2014 Wed, 2014-03-26 17:29 Jefferson Lab Weekly Briefs March 26, 2014 Wed, 2014-03-19 14:39 Jefferson Lab Weekly Briefs March 19, 2014 Wed, 2014-03-12 14:43 Jefferson Lab Weekly Briefs March 12, 2014 Wed, 2014-03-05 16:50 Jefferson Lab Weekly Briefs March

  12. 2014 - 05 | Jefferson Lab

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    5 May 2014 Wed, 2014-05-28 17:52 Jefferson Lab Weekly Briefs May 28, 2014 Wed, 2014-05-21 17:43 Jefferson Lab Weekly Briefs May 21, 2014 Wed, 2014-05-14 17:33 Jefferson Lab Weekly Briefs May 14, 2014 Wed, 2014-05-07 17:05 Jefferson Lab Weekly Briefs May 7

  13. 2014 - 10 | Jefferson Lab

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    0 Oct 2014 Wed, 2014-10-29 17:31 Jefferson Lab Weekly Briefs October 29, 2014 Wed, 2014-10-22 16:11 Jefferson Lab Weekly Briefs October 22, 2014 Wed, 2014-10-15 15:58 Jefferson Lab Weekly Briefs October 15, 2014 Wed, 2014-10-08 17:19 Jefferson Lab Weekly Briefs October 8

  14. 2014 - 11 | Jefferson Lab

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    1 Nov 2014 Wed, 2014-11-26 15:17 Jefferson Lab Weekly Briefs November 26, 2014 Wed, 2014-11-19 17:52 Jefferson Lab Weekly Briefs November 19, 2014 Wed, 2014-11-12 14:17 Jefferson Lab Weekly Briefs November 12, 2014 Wed, 2014-11-05 16:59 Jefferson Lab Weekly Briefs November 5

  15. 2015 - 02 | Jefferson Lab

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    2 Feb 2015 Wed, 2015-02-25 16:14 Jefferson Lab Weekly Briefs February 25, 2015 Wed, 2015-02-18 16:26 Jefferson Lab Weekly Briefs February 18, 2015 Wed, 2015-02-11 17:50 Jefferson Lab Weekly Briefs February 11, 2015 Wed, 2015-02-04 16:53 Jefferson Lab Weekly Briefs February

  16. 2015 - 03 | Jefferson Lab

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    3 Mar 2015 Wed, 2015-03-25 16:29 Jefferson Lab Weekly Briefs March 25, 2015 Wed, 2015-03-18 14:55 Jefferson Lab Weekly Briefs March 18, 2015 Wed, 2015-03-11 14:01 Jefferson Lab Weekly Briefs March 11, 2015 Wed, 2015-03-04 18:55 Jefferson Lab Weekly Briefs March

  17. 2015 - 06 | Jefferson Lab

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    6 Jun 2015 Wed, 2015-06-24 12:50 Jefferson Lab Weekly Briefs June 24, 2015 Wed, 2015-06-17 14:29 Jefferson Lab Weekly Briefs June 17, 2015 Wed, 2015-06-10 15:02 Jefferson Lab Weekly Briefs June 10, 2015 Wed, 2015-06-03 13:46 Jefferson Lab Weekly Briefs June 3

  18. 2015 - 08 | Jefferson Lab

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    8 Aug 2015 Wed, 2015-08-26 15:21 Jefferson Lab Weekly Briefs August 26, 2015 Wed, 2015-08-19 16:29 Jefferson Lab Weekly Briefs August 19, 2015 Wed, 2015-08-12 16:34 Jefferson Lab Weekly Briefs August 12, 2015 Wed, 2015-08-05 16:53 Jefferson Lab Weekly Briefs August 5

  19. 2015 - 11 | Jefferson Lab

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    1 Nov 2015 Wed, 2015-11-25 11:54 Jefferson Lab Weekly Briefs November 25, 2015 Wed, 2015-11-18 17:22 Jefferson Lab Weekly Briefs November 18, 2015 Thu, 2015-11-12 09:40 Jefferson Lab Weekly Briefs November 12, 2015 Thu, 2015-11-05 09:08 Jefferson Lab Weekly Briefs - November 5

  20. 2016 - 02 | Jefferson Lab

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    2 Feb 2016 Wed, 2016-02-24 13:33 Jefferson Lab Weekly Briefs February 24, 2016 Wed, 2016-02-17 11:49 Jefferson Lab Weekly Briefs February 17, 2016 Thu, 2016-02-11 14:11 Jefferson Lab Weekly Briefs February 11, 2016 Wed, 2016-02-03 15:49 Jefferson Lab Weekly Briefs February 3

  1. 2016 - 07 | Jefferson Lab

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    7 Jul 2016 Wed, 2016-07-27 16:15 Jefferson Lab Weekly Briefs July 27, 2016 Wed, 2016-07-20 16:45 Jefferson Lab Weekly Briefs July 20, 2016 Wed, 2016-07-13 21:13 Jefferson Lab Weekly Briefs - July 13, 2016 Wed, 2016-07-06 20:19 Jefferson Lab Weekly Briefs - July 6

  2. Omega Laser Facility - Laboratory for Laser Energetics

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    - Laboratory for Laser Energetics Laboratory for Laser Energetics Logo Search Home Around the Lab Past Issues Past Quick Shots About Office of the Director Map to LLE LLE Tours LLE ...

  3. OMEGA Laser Drivers - Laboratory for Laser Energetics

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

    Drivers - Laboratory for Laser Energetics Laboratory for Laser Energetics Logo Search Home Around the Lab Past Issues Past Quick Shots About Office of the Director Map to LLE LLE ...

  4. 2011 | Jefferson Lab

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    Dec 2011 Wed, 2011-12-21 14:00 Jefferson Lab Weekly Briefs December 21, 2011 Wed, 2011-12-14 14:00 Jefferson Lab Weekly Briefs December 14, 2011 Wed, 2011-12-07 14:00 Jefferson Lab Weekly Briefs December 7, 2011 Nov 2011 Wed, 2011-11-30 14:00 Jefferson Lab Weekly Briefs November 30, 2011 Wed, 2011-11-23 14:00 Jefferson Lab Weekly Briefs November 23, 2011 Wed, 2011-11-16 14:00 Jefferson Lab Weekly Briefs November 16, 2011 Wed, 2011-11-09 14:00 Jefferson Lab Weekly Briefs November 9, 2011 Wed,

  5. 2012 | Jefferson Lab

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    Dec 2012 Wed, 2012-12-19 14:00 Jefferson Lab Weekly Briefs December 19, 2012 Wed, 2012-12-12 12:00 Jefferson Lab Weekly Briefs December 12, 2012 Wed, 2012-12-05 14:00 Jefferson Lab Weekly Briefs December 5, 2012 Nov 2012 Wed, 2012-11-21 14:00 Jefferson Lab Weekly Briefs November 21, 2012 Wed, 2012-11-14 14:00 Jefferson Lab Weekly Briefs November 14, 2012 Wed, 2012-11-07 14:00 Jefferson Lab Weekly Briefs November 7, 2012 Oct 2012 Wed, 2012-10-31 15:00 Jefferson Lab Weekly Briefs October 31, 2012

  6. 2013 | Jefferson Lab

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    Dec 2013 Wed, 2013-12-18 15:04 Jefferson Lab Weekly Briefs December 18, 2013 Wed, 2013-12-11 14:43 Jefferson Lab Weekly Briefs December 11, 2013 Wed, 2013-12-04 13:07 Jefferson Lab Weekly Briefs December 4, 2013 Nov 2013 Wed, 2013-11-27 14:31 Jefferson Lab Weekly Briefs November 27, 2013 Wed, 2013-11-20 13:38 Jefferson Lab Weekly Briefs November 20, 2013 Wed, 2013-11-13 15:10 Jefferson Lab Weekly Briefs November 13, 2013 Wed, 2013-11-06 14:33 Jefferson Lab Weekly Briefs November 6, 2013 Oct

  7. 2014 | Jefferson Lab

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    Dec 2014 Wed, 2014-12-17 16:26 Jefferson Lab Weekly Briefs December 17, 2014 Wed, 2014-12-10 17:59 Jefferson Lab Weekly Briefs December 10, 2014 Wed, 2014-12-03 17:13 Jefferson Lab Weekly Briefs December 3, 2014 Nov 2014 Wed, 2014-11-26 15:17 Jefferson Lab Weekly Briefs November 26, 2014 Wed, 2014-11-19 17:52 Jefferson Lab Weekly Briefs November 19, 2014 Wed, 2014-11-12 14:17 Jefferson Lab Weekly Briefs November 12, 2014 Wed, 2014-11-05 16:59 Jefferson Lab Weekly Briefs November 5, 2014 Oct

  8. 2015 | Jefferson Lab

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    Dec 2015 Wed, 2015-12-23 08:12 Jefferson Lab Weekly Briefs December 23, 2015 Wed, 2015-12-16 14:44 Jefferson Lab Weekly Briefs December 16, 2015 Wed, 2015-12-09 17:20 Jefferson Lab Weekly Briefs December 10, 2015 Nov 2015 Wed, 2015-11-25 11:54 Jefferson Lab Weekly Briefs November 25, 2015 Wed, 2015-11-18 17:22 Jefferson Lab Weekly Briefs November 18, 2015 Thu, 2015-11-12 09:40 Jefferson Lab Weekly Briefs November 12, 2015 Thu, 2015-11-05 09:08 Jefferson Lab Weekly Briefs - November 5, 2015 Oct

  9. Jefferson Lab Public Affairs

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    Electronic Media print version Public Affairs Links Home Journalists' Newsroom Media Photographic Archives What is Jefferson Lab? Community Outreach Jefferson Lab Graphic Identity Standards and Style Guide Usage of the Jefferson Lab Logo - The following examples demonstrate correct use of the lab logo. Requests to use the Jefferson Lab logo by outside entities for conference posters, advertisements, presentations, websites, or other communications may be granted for one-time use on a

  10. Archaeology on Lab Land

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    Archaeology on Lab Land Archaeology on Lab Land People have lived in this area for more than 5,000 years. Lab archaeologists are studying and preserving the ancient human occupation of the Pajarito Plateau. Archaeology on Lab Land exhibit Environmental Research & Monitoring Visit our exhibit and find out how Los Alamos researchers are studying our rich cultural diversity. READ MORE Nake'muu archaeological site Unique Archaeology The thousands of Ancestral Pueblo sites identified on Lab land

  11. 2011 - 11 | Jefferson Lab

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

    1 Nov 2011 Wed, 2011-11-30 14:00 Jefferson Lab Weekly Briefs November 30, 2011 Wed, 2011-11-23 14:00 Jefferson Lab Weekly Briefs November 23, 2011 Wed, 2011-11-16 14:00 Jefferson Lab Weekly Briefs November 16, 2011 Wed, 2011-11-09 14:00 Jefferson Lab Weekly Briefs November 9, 2011 Wed, 2011-11-02 15:00 Jefferson Lab Weekly Briefs November 2

  12. 2012 - 02 | Jefferson Lab

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

    2 Feb 2012 Wed, 2012-02-29 14:00 Jefferson Lab Weekly Briefs February 29, 2012 Wed, 2012-02-22 14:00 Jefferson Lab Weekly Briefs February 22, 2012 Wed, 2012-02-15 14:00 Jefferson Lab Weekly Briefs February 15, 2012 Wed, 2012-02-08 14:00 Jefferson Lab Weekly Briefs February 8, 2012 Wed, 2012-02-01 14:00 Jefferson Lab Weekly Briefs February 1

  13. 2012 - 05 | Jefferson Lab

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    5 May 2012 Wed, 2012-05-30 15:00 Jefferson Lab Weekly Briefs May 30, 2012 Wed, 2012-05-23 15:00 Jefferson Lab Weekly Briefs May 23, 2012 Wed, 2012-05-16 15:00 Jefferson Lab Weekly Briefs May 16, 2012 Wed, 2012-05-09 15:00 Jefferson Lab Weekly Briefs May 9, 2012 Wed, 2012-05-02 17:00 Jefferson Lab Weekly Briefs May 2

  14. 2012 - 08 | Jefferson Lab

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    8 Aug 2012 Wed, 2012-08-29 15:00 Jefferson Lab Weekly Briefs August 29, 2012 Wed, 2012-08-22 15:00 Jefferson Lab Weekly Briefs August 22, 2012 Wed, 2012-08-15 15:00 Jefferson Lab Weekly Briefs August 15, 2012 Wed, 2012-08-08 15:00 Jefferson Lab Weekly Briefs August 8, 2012 Wed, 2012-08-01 15:00 Jefferson Lab Weekly Briefs August

  15. 2012 - 10 | Jefferson Lab

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    0 Oct 2012 Wed, 2012-10-31 15:00 Jefferson Lab Weekly Briefs October 31, 2012 Wed, 2012-10-24 15:00 Jefferson Lab Weekly Briefs October 24, 2012 Wed, 2012-10-17 15:00 Jefferson Lab Weekly Briefs October 17, 2012 Wed, 2012-10-10 15:00 Jefferson Lab Weekly Briefs October 10, 2012 Wed, 2012-10-03 15:00 Jefferson Lab Weekly Briefs October 3

  16. 2013 - 07 | Jefferson Lab

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    7 Jul 2013 Wed, 2013-07-31 13:42 Jefferson Lab Weekly Briefs July 31, 2013 Wed, 2013-07-24 13:54 Jefferson Lab Weekly Briefs July 24, 2013 Wed, 2013-07-17 14:19 Jefferson Lab Weekly Briefs July 17, 2013 Wed, 2013-07-10 14:17 Jefferson Lab Weekly Briefs July 10, 2013 Wed, 2013-07-03 13:30 Jefferson Lab Weekly Briefs July 3

  17. 2013 - 10 | Jefferson Lab

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    0 Oct 2013 Wed, 2013-10-30 15:29 Jefferson Lab Weekly Briefs October 30, 2013 Wed, 2013-10-23 14:30 Jefferson Lab Weekly Briefs October 23, 2013 Wed, 2013-10-16 14:53 Jefferson Lab Weekly Briefs October 16, 2013 Wed, 2013-10-09 14:59 Jefferson Lab Weekly Briefs October 9, 2013 Wed, 2013-10-02 15:11 Jefferson Lab Weekly Briefs October 2

  18. 2014 - 04 | Jefferson Lab

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    4 Apr 2014 Wed, 2014-04-30 16:43 Jefferson Lab Weekly Briefs April 30, 2014 Wed, 2014-04-23 17:50 Jefferson Lab Weekly Briefs April 23, 2014 Wed, 2014-04-16 19:05 Jefferson Lab Weekly Briefs April 16, 2014 Wed, 2014-04-09 18:08 Jefferson Lab Weekly Briefs April 9, 2014 Wed, 2014-04-02 17:21 Jefferson Lab Weekly Briefs April 2

  19. 2014 - 07 | Jefferson Lab

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

    7 Jul 2014 Wed, 2014-07-30 18:42 Jefferson Lab Weekly Briefs July 30, 2014 Wed, 2014-07-23 17:39 Jefferson Lab Weekly Briefs July 23, 2014 Wed, 2014-07-16 18:25 Jefferson Lab Weekly Briefs July 16, 2014 Wed, 2014-07-09 18:25 Jefferson Lab Weekly Briefs July 9, 2014 Wed, 2014-07-02 15:27 Jefferson Lab Weekly Briefs July 2

  20. 2015 - 04 | Jefferson Lab

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    4 Apr 2015 Wed, 2015-04-29 16:37 Jefferson Lab Weekly Briefs April 29, 2015 Wed, 2015-04-22 14:02 Jefferson Lab Weekly Briefs April 22, 2015 Wed, 2015-04-15 17:37 Jefferson Lab Weekly Briefs April 15, 2015 Wed, 2015-04-08 18:19 Jefferson Lab Weekly Briefs April 8, 2015 Wed, 2015-04-01 19:18 Jefferson Lab Weekly Briefs April 1

  1. 2015 - 07 | Jefferson Lab

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

    7 Jul 2015 Wed, 2015-07-29 17:01 Jefferson Lab Weekly Briefs July 29, 2015 Wed, 2015-07-22 16:00 Jefferson Lab Weekly Briefs July 22, 2015 Wed, 2015-07-15 21:52 Jefferson Lab Weekly Briefs - July 15, 2015 Wed, 2015-07-08 16:32 Jefferson Lab Weekly Briefs July 8, 2015 Wed, 2015-07-01 17:13 Jefferson Lab Weekly Briefs - July 1

  2. 2015 - 10 | Jefferson Lab

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    0 Oct 2015 Thu, 2015-10-29 11:57 Jefferson Lab Weekly Briefs October 29, 2015 Wed, 2015-10-21 15:50 Jefferson Lab Weekly Briefs October 21, 2015 Thu, 2015-10-15 08:38 Jefferson Lab Weekly Briefs October 15, 2015 Wed, 2015-10-07 17:07 Jefferson Lab Weekly Briefs October 7, 2015 Thu, 2015-10-01 08:00 Jefferson Lab Weekly Briefs September 30

  3. 2016 - 03 | Jefferson Lab

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    3 Mar 2016 Thu, 2016-03-31 09:51 Jefferson Lab Weekly Briefs March 31, 2016 Thu, 2016-03-24 08:36 Jefferson Lab Weekly Briefs March 23, 2016 Mon, 2016-03-21 08:31 Jefferson Lab Weekly Briefs March 17, 2016 Thu, 2016-03-10 14:36 Jefferson Lab Weekly Briefs March 10, 2016 Wed, 2016-03-02 13:36 Jefferson Lab Weekly Briefs March 2

  4. 2016 - 06 | Jefferson Lab

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    6 Jun 2016 Wed, 2016-06-29 21:11 Jefferson Lab Weekly Briefs - June 29, 2016 Wed, 2016-06-22 17:10 Jefferson Lab Weekly Briefs June 22, 2016 Wed, 2016-06-15 17:15 Jefferson Lab Weekly Briefs June 15, 2016 Wed, 2016-06-08 15:31 Jefferson Lab Weekly Briefs June 8, 2016 Thu, 2016-06-02 12:12 Jefferson Lab Weekly Briefs June 1

  5. Lab announces Venture Acceleration Fund recipients

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

    known as "Firehose," for use on miniature satellites or CubeSats. Firehose will apply an algorithm developed at LANL to enable advanced functions, such as imaging and video...

  6. Optically pulsed electron accelerator

    DOE Patents [OSTI]

    Fraser, J.S.; Sheffield, R.L.

    1985-05-20

    An optically pulsed electron accelerator can be used as an injector for a free electron laser and comprises a pulsed light source, such as a laser, for providing discrete incident light pulses. A photoemissive electron source emits electron bursts having the same duration as the incident light pulses when impinged upon by same. The photoemissive electron source is located on an inside wall of a radiofrequency-powered accelerator cell which accelerates the electron burst emitted by the photoemissive electron source.

  7. Optically pulsed electron accelerator

    DOE Patents [OSTI]

    Fraser, John S.; Sheffield, Richard L.

    1987-01-01

    An optically pulsed electron accelerator can be used as an injector for a free electron laser and comprises a pulsed light source, such as a laser, for providing discrete incident light pulses. A photoemissive electron source emits electron bursts having the same duration as the incident light pulses when impinged upon by same. The photoemissive electron source is located on an inside wall of a radio frequency powered accelerator cell which accelerates the electron burst emitted by the photoemissive electron source.

  8. Jefferson Lab injector development for next generation parity violation experiments

    SciTech Connect (OSTI)

    J. Grames, J. Hansknect, M. Poelker, R. Suleiman

    2011-05-01

    To meet the challenging requirements of next generation parity violation experiments at Jefferson Lab, the Center for Injectors and Sources is working on improving the parity-quality of the electron beam. These improvements include new electron photogun design and fast helicity reversal of the Pockels Cell. We proposed and designed a new scheme for slow helicity reversal using a Wien Filter and two Solenoids. This slow reversal complements the insertable half-wave plate reversal of the laser-light polarization by reversing the electron beam polarization at the injector while maintaining a constant accelerator configuration. For position feedback, fast air-core magnets located in the injector were commissioned and a new scheme for charge feedback is planned.

  9. First lasing of the IR upgrade FEL at Jefferson lab

    SciTech Connect (OSTI)

    Christopher Behre; Stephen Benson; George Biallas; James Boyce; Christopher Curtis; David Douglas; H. Dylla; L. Dillon-townes; Richard Evans; Albert Grippo; Joseph Gubeli; David Hardy; John Heckman; Carlos Hernandez-Garcia; Tommy Hiatt; Kevin Jordan; Nikolitsa Merminga; George Neil; Joseph Preble; Harvey Rutt; Michelle D. Shinn; Timothy Siggins; Hiroyuki Toyokawa; David W. Waldman; Richard Walker; Neil Wilson; Byung Yunn; Shukui Zhang

    2004-08-01

    We report initial lasing results from the IR Upgrade FEL at Jefferson Lab[1]. The electron accelerator was operated with low average current beam at 80 MeV. The time structure of the beam was 120 pC bunches at 4.678 MHz with up to 750 {micro}sec pulses at 2Hz. Lasing was established over the entire wavelength range of the mirrors (5.5-6.6 {micro}m). The detuning curve length, turn-on time, and power were in agreement with modeling results assuming a 1 psec FWHM micropulse. The same model predicts over 10 kW of power output with 10 mA of beam and 10% output coupling, which is the ultimate design goal of the IR Upgrade FEL. The behavior of the laser while the dispersion section strength was varied was found to qualitatively match predictions. Initial CW lasing results also will be presented.

  10. Proton Acceleration: New Developments in Energy Increase, Focusing...

    Office of Scientific and Technical Information (OSTI)

    ... Country of Publication: United States Language: English Subject: 43 PARTICLE ACCELERATORS; ACCELERATION; ACCELERATORS; BRIGHTNESS; FOCUSING; ION BEAMS; ION SOURCES; LASERS; PLASMA; ...

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

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

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

  12. OMEGA Amplifiers - Laboratory for Laser Energetics

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

    Amplifiers - Laboratory for Laser Energetics Laboratory for Laser Energetics Logo Search Home Around the Lab Past Issues Past Quick Shots About Office of the Director Map to LLE ...

  13. OMEGA Power Conditioning - Laboratory for Laser Energetics

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

    Power Conditioning - Laboratory for Laser Energetics Laboratory for Laser Energetics Logo Search Home Around the Lab Past Issues Past Quick Shots About Office of the Director Map ...

  14. Parabola Alignment Diagnostic - Laboratory for Laser Energetics

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

    Parabola Alignment Diagnostic - Laboratory for Laser Energetics Laboratory for Laser Energetics Logo Search Home Around the Lab Past Issues Past Quick Shots About Office of the ...

  15. OMEGA EP Amplifiers - Laboratory for Laser Energetics

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

    Amplifiers - Laboratory for Laser Energetics Laboratory for Laser Energetics Logo Search Home Around the Lab Past Issues Past Quick Shots About Office of the Director Map to LLE ...

  16. Ultrafast Laser Facility - Virtual Tour | Photosynthetic Antenna...

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

    Ultrafast Laser Facility - Virtual Tour December 10, 2015 Ultrafast Laser Facility - Virtual Tour A look at the technology and science in the Ultrafast lab PARC Research Scientist ...

  17. Application of Plasma Waveguides to High Energy Accelerators

    SciTech Connect (OSTI)

    Milchberg, Howard M

    2013-03-30

    will continue our development of advanced simulation tools by modifying the QuickPIC algorithm to allow for the simulation of plasma particle pick-up by the wake fields. We have also performed extensive simulations of plasma slow wave structures for efficient THz generation by guided laser beams or accelerated electron beams. We will pursue experimental studies of direct laser acceleration, and THz generation by two methods, ponderomotive-induced THz polarization, and THz radiation by laser accelerated electron beams. We also plan to study both conventional and corrugated plasma channels using our new 30 TW in our new lab facilities. We will investigate production of very long hydrogen plasma waveguides (5 cm). We will study guiding at increasing power levels through the onset of laser-induced cavitation (bubble regime) to assess the role played by the preformed channel. Experiments in direct acceleration will be performed, using laser plasma wakefields as the electron injector. Finally, we will use 2-colour ionization of gases as a high frequency THz source (<60 THz) in order for femtosecond measurements of low plasma densities in waveguides and beams.

  18. Sandia Labs' Photovoltaic Systems Evaluation Lab (PSEL) Marks...

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    Labs' Photovoltaic Systems Evaluation Lab (PSEL) Marks Accomplishments & Adds Capabilities ... Energy Systems LaboratoryBrayton Lab Photovoltaic Systems Evaluation Laboratory PV ...

  19. 2002 - 04 | Jefferson Lab

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    4 Apr 2002 Mon, 2002-04-22 14:00 Jefferson Lab's Education Web Site Hits New High-Usage Record Mon, 2002-04-22 14:00 Next Jefferson Lab Science Series Event Set for May 8 Mon, 2002-04-22 14:00 Jefferson Lab Man Donates Bone Marrow to Save 12-Year-Old Boy Mon, 2002-04-22 14:00 Jefferson Lab Tech Associate Invents Lockout Device for Equipment with Removable Power Cords Mon, 2002-04-22 14:00 Six Local Teens Win Jefferson Lab Summer Externships Fri, 2002-04-19 14:00 Jefferson Lab Physicist Wins

  20. 2009 - 03 | Jefferson Lab

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    3 Mar 2009 Fri, 2009-03-27 00:00 Jefferson Lab gets $75M in stimulus funds (Inside Business) Tue, 2009-03-24 00:00 Jefferson Lab gets stimulus money (Richmond Times-Dispatch) Tue, 2009-03-24 00:00 Stimulus money will update Jefferson Lab, create jobs (The Virginian-Pilot) Tue, 2009-03-24 00:00 Jefferson Lab gets $75 million stimulus grant (Daily Press) Mon, 2009-03-23 00:00 Jefferson Lab To Receive $75 Million In Recovery Act Funding Mon, 2009-03-23 00:00 Jefferson Lab gets federal stimulus

  1. Lab Breakthrough: Record-Setting Cavities | Department of Energy

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

    Record-Setting Cavities Lab Breakthrough: Record-Setting Cavities April 24, 2012 - 2:34pm Addthis At Jefferson Lab, researchers have fabricated a niobium cavity for particle accelerators that has set a world record for energy efficiency. Gianluigi "Gigi" Ciovati, a superconducting radiofrequency scientist, discusses how scientists at the Jefferson Lab developed the technology, and how it will be used to impact the energy industry. Michael Hess Michael Hess Former Digital Communications

  2. Lab-Corps Cohort 3 Teams | Department of Energy

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

    3 Teams Lab-Corps Cohort 3 Teams July 12 - August 25, 2016 Opening Session: Golden, Colo. Closing Session: Washington, DC Information about the Lab-Corps cohort 3 teams, their technologies, and how Lab-Corps is helping the teams fine-tune their commercialization approaches are highlighted here. Argonne National Laboratory - FiberSAS Argonne National Laboratory - WasteNot Fermi National Accelerator Laboratory - Fermians Idaho National Laboratory - DLR Lawrence Livermore National Laboratory -

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

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

    Thesis Prize | Jefferson Lab Physicist from Syracuse University Receives Jefferson Lab's 2014 Thesis Prize Young Physicist from Syracuse University Receives Jefferson Lab's 2014 Thesis Prize Beminiwattha Rakitha Beminiwattha NEWPORT NEWS, VA, June 6, 2014 - A young researcher, who worked on software development and data analysis for a major physics experiment conducted at the Thomas Jefferson National Accelerator Facility, has received an award for the thesis he wrote about his efforts.

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

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

    Awarded Vice President's Hammer Award Jefferson Lab Awarded Vice President's Hammer Award The Directives Review Team at the Thomas Jefferson National Accelerator Facility (Jefferson Lab) has been awarded the Vice President's Hammer Award for its work on the simplification of the Environment, Health and Safety (EH&S) requirements given by the U.S. Department of Energy for Jefferson Lab. The Hammer Award is a special recognition given by Vice President Al Gore to teams who have made

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

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

    Jefferson Lab Receives 2009 Presidential Early Career Award Jefferson Lab Scientist Receives 2009 Presidential Early Career Award Presidential Early Career Award for Scientists and Engineers recipent Gianluigi Ciovati Jefferson Lab Director Hugh Montgomery (left) congratulates Gianluigi Ciovati, who was named a 2009 recipient of a Presidential Early Career Award. Joining them in celebrating the award was Andrew Hutton, associate director for the Accelerator Division. Photo: Greg Adams

  6. Proton's Weak Charge Determined for First Time | Jefferson Lab

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

    Weak Charge Determined for First Time Proton's Weak Charge Determined for First Time Q-weak at Jefferson Lab has measured the proton's weak charge Q-weak at Jefferson Lab has measured the proton's weak charge. NEWPORT NEWS, VA, Sept. 17, 2013 - Researchers have made the first experimental determination of the weak charge of the proton in research carried out at the Department of Energy's Thomas Jefferson National Accelerator Facility (Jefferson Lab). The results, accepted for publication in

  7. Seventy Five Years of Particle Accelerators (LBNL Summer Lecture Series)

    ScienceCinema (OSTI)

    Sessler, Andy

    2011-04-28

    Summer Lecture Series 2006: Andy Sessler, Berkeley Lab director from 1973 to 1980, sheds light on the Lab's nearly eight-decade history of inventing and refining particle accelerators, which continue to illuminate the nature of the universe.

  8. Laser Wakefield Particle Acceleration

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

    in new capability for rapid data exploration and analysis. Investigators: Cameron Geddes, Jean-Luc Vay, Carl Schroeder, E. Cormier-Michel, E. Esarey, W.P. Leemans (LBNL); D.L....

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

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

    JSA Fellowship Awards for Research at the Jefferson Lab JSA Fellowship Awards for Research at the Jefferson Lab March 30, 2007 Washington, DC – The Southeastern Universities Research Association today announced the award of seven JSA fellowships for research related to the physics programs at the Thomas Jefferson National Accelerator Facility. The 2007-08 academic year recipients, who are graduate students from SURA member universities, are: Nathan Baillie and Joseph Katich, College of William

  10. 2015 - 09 | Jefferson Lab

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

    & Fabrication Corp. Named Top Small Business Subcontractor at Jefferson Lab for FY 2014 Fri, 2015-09-04 12:57 Jefferson Lab Adds Physics Fest Events to Virginia Science Festival ...

  11. Directions to Berkeley Lab

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    Joint Genome Institute (JGI) San Francisco Bay Area Transit Information San Francisco Airport to the Lab by car San Francisco Airport to the Lab by BART San Francisco Airport to...

  12. 2008 - 04 | Jefferson Lab

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

    April 2008 Sun, 04132008 - 11:00pm Jefferson Lab finds its man Mont (Inside Business) Wed, 04022008 - 11:00pm New director of Jefferson Lab named (Daily Press) Wed, 04022008...

  13. 2004 - 09 | Jefferson Lab

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

    9 Sep 2004 Tue, 2004-09-21 14:00 Catch Jefferson Lab's entertaining, educational Cryogenics Demonstration at the Virginia State Fair Fri, 2004-09-10 14:00 Jefferson Lab Announces Two Fall Science Series Events

  14. 2007 - 04 | Jefferson Lab

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

    4 Apr 2007 Tue, 2007-04-17 14:00 Jefferson Lab scientist puts intriguing view on spin of the proton Tue, 2007-04-17 14:00 Jefferson Lab Experiment Pins Down Pion

  15. 2008 - 10 | Jefferson Lab

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

    0 Oct 2008 Fri, 2008-10-24 15:00 Jefferson Lab electron beam charges up Mon, 2008-10-06 15:00 Jefferson Lab, ODU team up for center

  16. 2009 - 07 | Jefferson Lab

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

    7 Jul 2009 Thu, 2009-07-30 14:00 Jefferson Lab Hosts Science Poster Session Fri, 2009-07-10 14:00 Jefferson Lab Scientist Receives 2009 Presidential Early Career Award

  17. 2011 - 05 | Jefferson Lab

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

    5 May 2011 Mon, 2011-05-23 14:00 National labs offer computing time to Japanese physicists Wed, 2011-05-11 14:00 Two Jefferson Lab Scientists Win Prestigious Early Career Awards

  18. 2012 - 08 | Jefferson Lab

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

    8 Aug 2012 Fri, 2012-08-03 14:00 Jefferson Lab to Test Tornado Warning Siren on Friday Morning Wed, 2012-08-01 18:42 Media Advisory - Jefferson Lab Hosts Summer Intern Science Poster Session

  19. 2000 - 10 | Jefferson Lab

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

    October 2000 Wed, 10112000 - 11:00pm Jefferson Lab: Cancer-seeking Camera Demystifies Research Lab (Daily Press) Sat, 10072000 - 11:00pm Breast Cancer Biopsies Could Be Things...

  20. 2009 - 07 | Jefferson Lab

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

    2009 Sun, 07052009 - 11:00pm Jefferson Lab creates better way to discover breast cancer Sun, 07052009 - 11:00pm Jefferson Lab employee invents low-tech gizmo to protect...

  1. 2004 - 10 | Jefferson Lab

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

    0 Oct 2004 Sun, 2004-10-24 00:00 efferson Lab Hopes to Bulk Up 'Strong Force' Theory (Daily Press) Mon, 2004-10-04 00:00 Jefferson Lab a Worthy Investment (Roanoke.com

  2. 2008 - 10 | Jefferson Lab

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

    10 Oct 2008 Fri, 2008-10-24 00:00 Jefferson Lab electron beam charges up (Inside Business) Mon, 2008-10-06 00:00 Jefferson Lab, ODU team up for center (Inside Business

  3. 2014 - 09 | Jefferson Lab

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

    9 Sep 2014 Wed, 2014-09-24 18:55 Jefferson Lab Weekly Briefs September 24, 2014 Wed, 2014-09-10 18:02 Jefferson Lab Weekly Briefs September 10

  4. Fifteen Years of Beam on Target | Jefferson Lab

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

    Fifteen Years of Beam on Target Fifteen Years of Beam on Target First beam enters Hall C First beam enters Hall C. On July 1, 1994, Jefferson Lab's accelerator delivered an ...

  5. Swapan Chattopadhyay Named as AAAS Fellow | Jefferson Lab

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

    ... until his move to Jefferson Lab in 2001. He has contributed to the development of accelerators in Europe, India, Korea, Japan, Taiwan, People's Republic of China and North America. ...

  6. Recent News from the National Labs | Department of Energy

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

    experiments at Oak Ridge National Lab. By accelerating intense beams of light ions to strike a target, the facility creates short-lived, radioactive nuclei that are used for...

  7. Lab-Corps: Training National Lab Entrepreneurs to Take Clean...

    Office of Environmental Management (EM)

    Lab-Corps: Training National Lab Entrepreneurs to Take Clean Energy to Market Lab-Corps: Training National Lab Entrepreneurs to Take Clean Energy to Market March 18, 2016 - 8:54am ...

  8. 2016 - 07 | Jefferson Lab

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    7 Jul 2016 Fri, 2016-07-01 09:16 Jefferson Lab Director Awarded Glazebrook Medal

  9. Benefits | Jefferson Lab

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    Benefits Jefferson Lab provides a comprehensive, balanced, and competitive benefits package to employees. The lab offers a variety of benefit options, including medical, dental, health and dependent care reimbursement accounts, and a defined contribution plan and other inclusive offerings. Jefferson Lab remains committed to providing a quality and affordable benefit programs. Detailed information of the options provided by the lab can be found by browsing the benefits webpage. You will find

  10. Business Services | Jefferson Lab

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

    Business Services Jefferson Lab spends approximately $73 million annually through procurements to a diverse group of large and small businesses for a broad range of products and services that support the lab's overall mission. Managing the lab's vendor process is the Procurement & Services Department. The department is dedicated to the highest standards of service, conduct and continuous improvement. To learn more about business opportunities with the lab, contact Procurement & Services.

  11. 2006 - 03 | Jefferson Lab

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    March 2006 Sun, 03052006 - 12:00am Faces and Places: Fellowships for US lab directors (CERN Courier...

  12. 2000 - 08 | Jefferson Lab

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    8 Aug 2000 Thu, 2000-08-31 14:00 Christoph Leeman becomes Jefferson Lab's first Deputy Director

  13. 2001 - 11 | Jefferson Lab

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    11 Nov 2001 Fri, 2001-11-16 13:00 Christoph W. Leemann Named Jefferson Lab Director

  14. 2002 - 09 | Jefferson Lab

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    09 Sep 2002 Fri, 2002-09-06 14:00 Jefferson Lab announces Fall 2002 Science Series line

  15. 2004 - 10 | Jefferson Lab

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    0 Oct 2004 Wed, 2004-10-27 14:00 Jefferson Lab Announces Fall Science Series Event Nov. 23

  16. 2007 - 02 | Jefferson Lab

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    2 Feb 2007 Thu, 2007-02-08 13:00 Jefferson Lab Awards Contract for Next Cluster Computer

  17. 2007 - 07 | Jefferson Lab

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    7 Jul 2007 Tue, 2007-07-17 14:00 Education Secretary Morris, Senator Norment visit Jefferson Lab

  18. 2008 - 03 | Jefferson Lab

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    3 Mar 2008 Fri, 2008-03-28 14:00 Teachers Invited to Activities Night at Jefferson Lab

  19. 2009 - 12 | Jefferson Lab

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    2 Dec 2009 Thu, 2009-12-03 09:08 Big changes for the Jefferson Lab campus

  20. 2011 - 05 | Jefferson Lab

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    5 May 2011 Wed, 2011-05-11 10:31 Two Jefferson Lab Scientists Win Prestigious Early Career Awards

  1. 2011 - 11 | Jefferson Lab

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    1 Nov 2011 Mon, 2011-11-28 13:00 Jefferson Lab Scientist Wins 2011 Lawrence Award

  2. Jefferson Lab Contacts

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    Contact Us Privacy and Security Notice Skip over navigation Search the JLab Site Search Please upgrade your browser. This site's design is only visible in a graphical browser that supports web standards, but its content is accessible to any browser. Concerns? Jefferson Lab Navigation Home Search News Insight print version Jefferson Lab 12000 Jefferson Avenue Newport News, VA 23606 Phone: (757) 269-7100 Fax: (757) 269-7363 Contact Jefferson Lab Jefferson Lab's service departments and divisional

  3. 2005 - 11 | Jefferson Lab

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    1 Nov 2005 Wed, 2005-11-23 00:00 Jefferson Lab budget at risk for cuts

  4. 2007 - 05 | Jefferson Lab

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    5 May 2007 Tue, 2007-05-15 00:00 Leemann Steps Down from Jefferson Lab Directorship

  5. 2016 - 08 | Jefferson Lab

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

    8 Aug 2016 Wed, 2016-08-31 13:15 Jefferson Lab Weekly Briefs August 31, 2016 Wed, 2016-08-24 15:25 Jefferson Lab Weekly Briefs August 24, 2016 Wed, 2016-08-17 17:27 Jefferson Lab Weekly Briefs August 17, 2016 Thu, 2016-08-11 08:44 JLab Weekly Briefs - August 11, 2016 Thu, 2016-08-04 08:59 Jefferson Lab Weekly Briefs August 4

  6. LCLS Prep Lab Images | Sample Preparation Laboratories

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

    LCLS Prep Lab Images « Back to LCLS Prep Laboratory LCLS Prep Lab LCLS Prep Lab, Acid Wash and Water Purifier LCLS Prep Lab, Corner LCLS FEH LCLS Prep Lab, Acetone LCLS Prep Lab, First Aid LCLS Prep Lab, pH LCLS Prep Lab, Lisa Hammon LCLS Prep Lab, Glass LCLS Prep Lab, Hazardous Waste Cabinet LCLS Prep Lab, Door Previous Pause Next

  7. 2014 - 07 | Jefferson Lab

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

    7 Jul 2014 Thu, 2014-07-31 08:56 Media Advisory: Poster Session Highlights Projects, Research Carried Out by Summer Interns at Jefferson Lab Tue, 2014-07-01 14:20 Jefferson Lab Project Team Receives Department of Energy Award Tue, 2014-07-01 14:10 Maintenance & Cleaning Firm Earns Jefferson Lab's Small Business Award for 2013

  8. 2001 - 03 | Jefferson Lab

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

    3 Mar 2001 Wed, 2001-03-21 13:00 Six NN High School Students Win Jefferson Lab Externships Wed, 2001-03-21 13:00 Jones O. &amp; Associates of Hampton wins Jefferson Lab's annual Small Disadvantaged Business Subcontractor award Wed, 2001-03-14 13:00 Jefferson Lab Seeks Applicants for Science Teacher Enrichment Program

  9. 2003 - 09 | Jefferson Lab

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

    9 Sep 2003 Mon, 2003-09-29 14:00 Jefferson Lab announces Oct. 7 Fall Science Series event Tue, 2003-09-09 14:00 Female physicists lead the way on Jefferson Lab experiment Fri, 2003-09-05 14:00 Jefferson Lab announces Fall Science Series line up

  10. 2004 - 04 | Jefferson Lab

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

    4 Apr 2004 Thu, 2004-04-15 14:00 Jefferson Lab recognizes its Outstanding Small Business Contractor for FY 2003 Mon, 2004-04-12 14:00 Jefferson Lab invites families, groups to Summer Physics Fests Mon, 2004-04-12 14:00 Jefferson Lab's Science Education Website Helps Students Prepare for Upcoming Standards of Learning Tests

  11. 2001 - 11 | Jefferson Lab

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

    1 Nov 2001 Sat, 2001-11-17 00:00 Jefferson Lab Gets New Chief: Leemann takes top post (Times-Dispatch) Sat, 2001-11-17 00:00 Leemann Officially Takes Over Peninsula's Jefferson Lab (The Virginian-Pilot) Mon, 2001-11-05 00:00 Lab is Working to Build a Better Mouse Camera

  12. 2011 - 12 | Jefferson Lab

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

    2 Dec 2011 Wed, 2011-12-21 14:00 Jefferson Lab Weekly Briefs December 21, 2011 Wed, 2011-12-14 14:00 Jefferson Lab Weekly Briefs December 14, 2011 Wed, 2011-12-07 14:00 Jefferson Lab Weekly Briefs December 7

  13. 2012 - 07 | Jefferson Lab

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

    7 Jul 2012 Wed, 2012-07-25 15:00 Jefferson Lab Weekly Briefs July 25, 2012 Wed, 2012-07-18 15:00 Jefferson Lab Weekly Briefs July 18, 2012 Wed, 2012-07-11 15:00 Jefferson Lab Weekly Briefs July 1

  14. 2012 - 09 | Jefferson Lab

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

    9 Sep 2012 Wed, 2012-09-26 15:00 Jefferson Lab Weekly Briefs September 26, 2012 Wed, 2012-09-19 15:00 Jefferson Lab Weekly Briefs September 19, 2012 Wed, 2012-09-12 15:00 Jefferson Lab Weekly Briefs September 12

  15. 2012 - 11 | Jefferson Lab

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

    1 Nov 2012 Wed, 2012-11-21 14:00 Jefferson Lab Weekly Briefs November 21, 2012 Wed, 2012-11-14 14:00 Jefferson Lab Weekly Briefs November 14, 2012 Wed, 2012-11-07 14:00 Jefferson Lab Weekly Briefs November 7

  16. 2012 - 12 | Jefferson Lab

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

    2 Dec 2012 Wed, 2012-12-19 14:00 Jefferson Lab Weekly Briefs December 19, 2012 Wed, 2012-12-12 12:00 Jefferson Lab Weekly Briefs December 12, 2012 Wed, 2012-12-05 14:00 Jefferson Lab Weekly Briefs December 5

  17. 2013 - 09 | Jefferson Lab

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

    9 Sep 2013 Wed, 2013-09-25 13:37 Jefferson Lab Weekly Briefs September 25, 2013 Wed, 2013-09-18 14:40 Jefferson Lab Weekly Briefs September 18, 2013 Wed, 2013-09-11 12:30 Jefferson Lab Weekly Briefs September 11

  18. 2013 - 12 | Jefferson Lab

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

    2 Dec 2013 Wed, 2013-12-18 15:04 Jefferson Lab Weekly Briefs December 18, 2013 Wed, 2013-12-11 14:43 Jefferson Lab Weekly Briefs December 11, 2013 Wed, 2013-12-04 13:07 Jefferson Lab Weekly Briefs December 4

  19. 2014 - 06 | Jefferson Lab

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

    6 Jun 2014 Wed, 2014-06-25 17:23 Jefferson Lab Weekly Briefs June 25, 2014 Wed, 2014-06-11 18:12 Jefferson Lab Weekly Briefs June 11, 2014 Wed, 2014-06-04 19:13 Jefferson Lab Weekly Briefs June 4

  20. 2014 - 08 | Jefferson Lab

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

    8 Aug 2014 Wed, 2014-08-20 18:43 Jefferson Lab Weekly Briefs August 20, 2014 Wed, 2014-08-13 18:59 Jefferson Lab Weekly Briefs August 13, 2014 Wed, 2014-08-06 19:11 Jefferson Lab Weekly Briefs August 6