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Note: This page contains sample records for the topic "accelerator center slac" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
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1

SLAC National Accelerator Laboratory - SLAC News Center  

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News Center NEWS FEATURES October 25, 2013 SLAC Researcher Lauded for Ground-breaking Graduate Work Sbastien Corde, a postdoctoral researcher with SLAC's Facility for Advanced...

2

SLAC National Accelerator Laboratory - About SLAC  

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About SLAC Overview Director's Office Vision & Mission Organization History Brochures Contact SLAC About SLAC SLAC lab at night Since its opening in 1962, SLAC National Accelerator...

3

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

Energy.gov (U.S. Department of Energy (DOE))

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

4

SLAC National Accelerator Laboratory - SLAC Overview  

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SLAC Overview An aerial image of SLAC's facilities SLAC National Accelerator Laboratory is one of 10 Department of Energy (DOE) Office of Science laboratories and is operated by...

5

SLAC National Accelerator Laboratory - SLAC National Accelerator...  

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Security Notice and Terms of Use Updated January 3, 2005 PRIVACY NOTICE Welcome to the SLAC National Accelerator Laboratory website. We collect no personal information about you...

6

SLAC National Accelerator Laboratory - Contact SLAC  

NLE Websites -- All DOE Office Websites (Extended Search)

Contact SLAC An aerial image of SLACs Accelerator, with a view of the highway and rest of the facility also. The SLAC campus is located on 426 acres of Stanford University...

7

SLAC National Accelerator Laboratory - SLAC Study Reveals Active...  

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By Glennda Chui May 22, 2013 Scientists from the Joint Center for Structural Genomics (JCSG) at SLAC National Accelerator Laboratory have determined the 3-D structure of...

8

SLAC National Accelerator Laboratory - Accelerators and Society  

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Accelerators and Society PHOTO: An accelerator at SLAC. SLAC has been developing, running and studying the basic physics of particle accelerators for half a century. Thousands of...

9

SLAC National Accelerator Laboratory - Organization  

NLE Websites -- All DOE Office Websites (Extended Search)

Organization PHOTO: Aerial view of SLAC Campus SLAC National Accelerator Laboratory is operated by Stanford University for the U.S. Department of Energy's Office of Science. The...

10

SLAC National Accelerator Laboratory - SLAC Physicist Receives...  

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Receives Free-electron Laser Award By Glenn Roberts Jr. September 10, 2013 Dao Xiang, a SLAC accelerator physicist, has received an international award for his work on a technique...

11

SLAC National Accelerator Laboratory -  

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SLAC logo Staff Resources | Research Resources searchButton Web People ABOUT SLAC Overview Director's Office Vision & Mission Organization History Brochures Contact SLAC RESEARCH...

12

SLAC National Accelerator Laboratory - Accelerator Directorate  

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physics. Today, the Accelerator Directorate operates and maintains SLAC's existing accelerators to provide the highest possible level of performance. Accelerator employees improve...

13

What is SLAC National Accelerator  

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SLAC National Accelerator Laboratory? The numbers tell the tale. SLAC began in 1962 with 200 employees. Nearly 1,700 people now work on staff plus 300 postdoctoral researchers and...

14

SLAC National Accelerator Laboratory - SLAC, Stanford Team Focuses...  

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SLAC, Stanford Team Focuses on High-Energy Electrons to Treat Cancer By Diane Rezendes Khirallah February 9, 2012 Accelerator physicists at SLAC and cancer specialists from...

15

SLAC National Accelerator Laboratory - Accelerator Research  

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An image of the FACET equipment and a man examining it. ACCELERATOR PHYSICS Accelerators form the backbone of SLAC's on-site experimental program. They are complicated...

16

SLAC National Accelerator Laboratory - SLAC Today  

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SLAC Today Banner image for SLAC Today SLAC Today shares new information and multimedia daily with the laboratory's diverse audiences, including nearly 1,700 employees, 300...

17

Annual Planning Summaries: Stanford Linear Accelerator (SLAC...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Stanford Linear Accelerator (SLAC) Annual Planning Summaries: Stanford Linear Accelerator (SLAC) Document(s) Available For Download January 11, 2012 2012 Annual Planning Summary...

18

SLAC National Accelerator Laboratory - Visiting SLAC  

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Visiting SLAC Arial photo of people gathering at SLAC SLAC welcomes thousands of visitors each year from around the world. In addition to hosting scientists who come to conduct...

19

SLAC National Accelerator Laboratory - Community at SLAC  

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Community at SLAC PHOTO: Community members on a tour of SLAC Through a variety of events and outreach programs, SLAC seeks to connect with our community and share our excitement...

20

SLAC National Accelerator Laboratory - SLAC Tours  

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SLAC Tours PHOTO: Group of people on a SLAC tour. SLAC public tours offer visitors a first-hand glimpse into the scientific discoveries being made at the laboratory. Tours are...

Note: This page contains sample records for the topic "accelerator center slac" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


21

SLAC National Accelerator Laboratory - SLAC Researcher Lauded...  

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SLAC Researcher Lauded for Ground-breaking Graduate Work By Lori Ann White October 25, 2013 Sbastien Corde, a postdoctoral researcher with SLAC's Facility for Advanced...

22

SLAC National Accelerator Laboratory - Seen Above SLAC: A Bird...  

NLE Websites -- All DOE Office Websites (Extended Search)

Seen Above SLAC: A Bird's-Eye View of the Lab By Mike Ross February 8, 2012 About 50 new aerial photos of SLAC National Accelerator Laboratory have been added to the lab's Flickr...

23

SLAC National Accelerator Laboratory - SLAC History  

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SLAC History black and white photo of the first construction of SLAC In 1962, in the rolling hills west of Stanford University, construction began on the longest and straightest...

24

SLAC National Accelerator Laboratory - Safety at SLAC  

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Safety at SLAC PHOTO: Landscape of oak tree and green grass SLAC is committed to protecting the health and safety of our staff, the community and the environment as we carry out...

25

SLAC National Accelerator Laboratory - Careers at SLAC  

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Careers at SLAC An image of a large group of SLAC employees Join us as we explore the ultimate structure and dynamics of matter and the properties of energy, space and time - at...

26

SLAC National Accelerator Laboratory - News and Media  

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news releases and articles, multimedia content and more. Press Contact: Andy Freeberg, SLAC Media Relations Manager 926-650-4359, afreeberg@slac.stanford.edu NEWS CENTER Browse...

27

SLAC National Accelerator Laboratory - SLAC Scientists Study...  

NLE Websites -- All DOE Office Websites (Extended Search)

Housing Transportation News Feature Archive SLAC Scientists Study How Nature Cleans Uranium from Colorado Aquifer By Lori Ann White January 10, 2012 Rifle, Colorado, is a small...

28

SLAC National Accelerator Laboratory - SLAC Scientists Awarded...  

NLE Websites -- All DOE Office Websites (Extended Search)

SLAC Scientists Awarded Grants from Stanford Energy Institute By Mark Shwartz & Mark Golden, Stanford News Service September 17, 2012 Stanford University's Precourt Institute for...

29

SLAC National Accelerator Laboratory - SLAC Physicist Explores...  

NLE Websites -- All DOE Office Websites (Extended Search)

SLAC Physicist Explores Parallel Universes Sunday Night on Discovery Channel By Mike Ross September 1, 2011 Are parallel universes real? The answer to that intriguing question is...

30

SLAC National Accelerator Laboratory Technology Marketing ...  

Energy Analysis; Energy Storage; Geothermal; Hydrogen and Fuel Cell; Hydropower, Wave and Tidal; ... SLAC National Accelerator Laboratory Technology M ...

31

SLAC National Accelerator Laboratory Technology Marketing ...  

Energy Analysis; Energy Storage; Geothermal; Hydrogen and Fuel Cell; Hydropower, Wave and Tidal; ... SLAC National Accelerator Laboratory Technology Marketing Summaries.

32

SLAC National Accelerator Laboratory - SLAC Software Developer...  

NLE Websites -- All DOE Office Websites (Extended Search)

SLAC Software Developer Discusses Physics Simulation Tool to Make Cancer Therapy Safer By Helen Shen October 20, 2011 Tiny particles are making a big difference in the world of...

33

SLAC National Accelerator Laboratory - SLAC Scientists Create...  

NLE Websites -- All DOE Office Websites (Extended Search)

Create Twisted Light By Lori Ann White September 18, 2013 Scientists at SLAC have found a new method to create coherent beams of twisted light - light that spirals around a central...

34

A New Control Room for SLAC Accelerators  

SciTech Connect

We are planning to construct a new control room at SLAC to unify and improve the operation of the LCLS, SPEAR3, and FACET accelerator facilities, and to provide the space and flexibility needed to support the LCLS-II and proposed new test beam facilities. The existing control rooms for the linac and SPEAR3 have been upgraded in various ways over the last decade, but their basic features have remained unchanged. We propose to build a larger modern Accelerator Control Room (ACR) in the new Research Support Building (RSB) which is currently under construction at SLAC. Shifting the center of control for the accelerator facilities entails both technical and administrative challenges. In this paper, we describe the history, concept, and status of this project.

Erickson, Roger; Guerra, E.; Stanek, M.; Hoover, Z.Van; Warren, J.; /SLAC

2012-06-04T23:59:59.000Z

35

SLAC National Accelerator Laboratory: SLAC Science Focus Area...  

NLE Websites -- All DOE Office Websites (Extended Search)

accelerated closure of costly large-scale DOE legacy site operations such as the Rocky Flats Environmental Technology Site1. The SLAC SFA is working to leverage SR studies to...

36

SLAC National Accelerator Laboratory - SLAC's Newest Facility...  

NLE Websites -- All DOE Office Websites (Extended Search)

the Max Planck Institute of Physics in Berlin will continue their efforts to make accelerators smaller and more efficient using a technique called plasma wakefield acceleration....

37

SLAC National Accelerator Laboratory - Novel Magnetic, Superconducting...  

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Materials and Energy Science (SIMES), a joint institute of the Department of Energy's SLAC National Accelerator Laboratory and Stanford University, opens "exciting possibilities...

38

SLAC National Accelerator Laboratory - Panofsky Prize Honors...  

NLE Websites -- All DOE Office Websites (Extended Search)

and Lawrence Berkeley National Laboratory, and Cabrera, of Stanford University and SLAC National Accelerator Laboratory, have sought the same answers in deep shafts largely...

39

SLAC National Accelerator Laboratory - Experiment Finds Ulcer...  

NLE Websites -- All DOE Office Websites (Extended Search)

10, 2012 Menlo Park, Calif. - Experiments at the U.S. Department of Energy's (DOE) SLAC National Accelerator Laboratory have revealed a potential new way to attack common...

40

SLAC National Accelerator Laboratory - Roger Blandford Receives...  

NLE Websites -- All DOE Office Websites (Extended Search)

Institute for Particle Astrophysics and Cosmology, which is jointly run by Stanford and SLAC National Accelerator Laboratory, and is a professor of particle physics and...

Note: This page contains sample records for the topic "accelerator center slac" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


41

SLAC National Accelerator Laboratory - Speakers Bureau  

NLE Websites -- All DOE Office Websites (Extended Search)

accelerator technology, chemistry, astrophysics and more. For more information or to book a speaker, please contact the Office of Communications. RELATED LINKS Contact SLAC...

42

SLAC National Accelerator Laboratory - LCLS Graphite Experiment...  

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LCLS Graphite Experiment Poses New Questions for Researchers By Glenn Roberts Jr. May 21, 2012 In experiments at SLAC National Accelerator Laboratory, a powerful X-ray laser...

43

Radio frequency pulse compression experiments at SLAC (Stanford Linear Accelerator Center)  

Science Conference Proceedings (OSTI)

Proposed future positron-electron linear colliders would be capable of investigating fundamental processes of interest in the 0.5--5 TeV beam-energy range. At the SLAC Linear Collider (SLC) gradient of about 20 MV/m this would imply prohibitive lengths of about 50--250 kilometers per linac. We can reduce the length by increasing the gradient but this implies high peak power, on the order of 400-- to 1000-MW at X-Band. One possible way to generate high peak power is to generate a relatively long pulse at a relatively low power and compress it into a short pulse with higher peak power. It is possible to compress before DC to RF conversion, as is done using magnetic switching for induction linacs, or after DC to RF conversion, as is done for the SLC. Using RF pulse compression it is possible to boost the 50-- to 100-MW output that has already been obtained from high-power X-Band klystrons the levels required by the linear colliders. In this note only radio frequency pulse compression (RFPC) is considered.

Farkas, Z.D.; Lavine, T.L.; Menegat, A.; Miller, R.H.; Nantista, C.; Spalek, G.; Wilson, P.B.

1991-01-01T23:59:59.000Z

44

SLAC National Accelerator Laboratory Our Vision. Our Mission...  

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National Accelerator Laboratory Our Vision. Our Mission. Our Values. SLAC National Accelerator Laboratory 2575 Sand Hill Road Menlo Park, CA 94025-7015 slac.stanford.edu Great...

45

SLAC National Accelerator Laboratory - Biology  

NLE Websites -- All DOE Office Websites (Extended Search)

Biology Image of the HIV Antibody moving towards a molecule Biological molecules are the machinery of life. Each year hundreds of scientists come to SLAC's Stanford Synchrotron...

46

SLAC National Accelerator Laboratory - Researchers Demonstrate...  

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in Nature by a team including scientists from the U.S. Department of Energy's (DOE) SLAC National Accelerator Laboratory and Stanford University. "We still have a number of...

47

SLAC National Accelerator Laboratory - Berkeley Lab Director...  

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to give a science talk as part of the commemoration of the 50th Anniversary of the SLAC National Accelerator Laboratory. In preparing for the talk, I took the opportunity to...

48

SLAC National Accelerator Laboratory - Scientists Create First...  

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First Atomic X-ray Laser January 25, 2012 Menlo Park, Calif. - Scientists working at the U.S. Department of Energy's (DOE) SLAC National Accelerator Laboratory have created the...

49

SLAC  

NLE Websites -- All DOE Office Websites (Extended Search)

SLAC, Stanford Linear Accelerator Center, der längste Linearbeschleuniger SLAC, Stanford Linear Accelerator Center, der längste Linearbeschleuniger der Welt, liegt südlich von San Francisco. Er beschleunigt Elektronen und Positronen längs einer zwei Meilen (ca. 3.6 km) messenden Strecke und richtet diese auf verschiedene Targets, Ringe und Detektoren. Der im Bild gezeigte PEP Ring wird gegenwärtig zur B-Fabrik umgebaut. In B - Fabriken , erforschen Physiker mit Hilfe von B - Mesonen die Geheimnisse, die hinter der Antimaterie stecken. Damit verbundene physikalische Forschung findet auch in Cornell mit Hilfe von CESR und in Japan mit KEK statt. Zur Information: ELECTRON GUN: Die Elektronenkanone in Ihrer Fernsehröhre funktioniert in ähnlicher Weise: eine heisse Kathode emittiert Elektronen, welche durch ein elektrisches Feld beschleunigt werden. Wenn diese den

50

SLAC National Accelerator Laboratory - DOE Energy Blog Does Q...  

NLE Websites -- All DOE Office Websites (Extended Search)

Scientist By Niketa Kumar November 7, 2011 from DOE Energy Blog Fifteen years ago, SLAC National Accelerator Laboratory (SLAC) scientist Apurva Mehta volunteered to help a...

51

SLAC National Accelerator Laboratory - Brochures  

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Brochures Download a variety of brochures and fact sheets to learn more about SLAC, our programs and latest scientific discoveries. Please contact us if you'd like more information...

52

Kwok Ko SLAC National Accelerator Laboratory  

NLE Websites -- All DOE Office Websites (Extended Search)

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

53

SLAC National Accelerator Laboratory - Doing Business with SLAC  

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Doing Business with SLAC As SLAC's scientific mission has broadened, the laboratory is also expanding its relationships with industry, potential funding agencies and suppliers of...

54

Research | SLAC National Accelerator Laboratory  

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Accelerators and Society Astrophysics & Cosmology Biology Elementary Particle Physics Environmental Science Materials, Chemistry & Energy Sciences Scientific Computing X-ray...

55

SLAC National Accelerator Laboratory - SLAC News Archive January...  

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SLAC News Archive January to May 2011 By Andy Freeberg May 20, 2011 For all 2011 news features prior to May 23, 2011, see the previous SLAC news archives by visiting: http:...

56

SLAC National Accelerator Laboratory - Seen Around SLAC: Fermi...  

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Seen Around SLAC: Fermi Telescope Model Flies Over Kavli Lobby By Lori Ann White October 26, 2011 A half-sized Fermi space telescope model, originally launched from SLAC's booth at...

57

SLAC National Accelerator Laboratory - SLAC's Sandy Merola Explains...  

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SLAC's Sandy Merola Explains Energy Science Network's Importance on YouTube By Mike Ross November 30, 2011 Sandy Merola, SLAC's Chief Operating Officer, has a prominent role in a...

58

Science at SLAC National Accelerator  

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matter and dark energy, and develop smaller, more efficient versions of particle accelerators widely used in research, medicine and industry. As our second half-century unfolds,...

59

SLAC National Accelerator Laboratory - Taking Some Guesswork...  

NLE Websites -- All DOE Office Websites (Extended Search)

SLAC logo Staff Resources | Research Resources searchButton Web People ABOUT SLAC Overview Director's Office Vision & Mission Organization History Brochures Contact SLAC RESEARCH...

60

SLAC National Accelerator Laboratory - SLAC Scientists Win Prestigious...  

NLE Websites -- All DOE Office Websites (Extended Search)

known as "external seeding" for improving the function of X-ray free electron lasers. Leonardo Senatore, a theoretical physicist with the SLAC-Stanford Kavli Institute for...

Note: This page contains sample records for the topic "accelerator center slac" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


61

SLAC National Accelerator Laboratory - SLAC Public Lecture Series  

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happening at the laboratory. From the nanotechnology of diamonds to the latest Higgs Boson discoveries, SLAC public lectures provide non-scientists with a unique insight into...

62

SLAC National Accelerator Laboratory - SLAC Engages Youth, Families...  

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SLAC Engages Youth, Families at 2012 USA Science & Engineering Festival By Andy Freeberg May 7, 2012 With more than 150,000 participants, the second annual USA Science &...

63

SLAC National Accelerator Laboratory - In TEDx Talk, SLAC Scientist...  

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In TEDx Talk, SLAC Scientist Shares Idea Worth Spreading By Lori Ann White July 14, 2011 In a home-grown version of a TED talk - famous for presenting "Ideas Worth Spreading" in...

64

SLAC National Accelerator Laboratory - SLAC Research Cracks Puzzle...  

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Press Release Archive SLAC Research Cracks Puzzle of Enzyme Critical to Food Supply November 17, 2011 Menlo Park, Calif. - If we could make plant food from nitrogen the way nature...

65

SLAC National Accelerator Laboratory - SLAC's X-ray Laser Explores...  

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X-ray Laser Explores Big Data Frontier By Glenn Roberts Jr. June 12, 2013 It's no surprise that the data systems for SLAC's Linac Coherent Light Source X-ray laser have drawn...

66

SLAC National Accelerator Laboratory - 3 SLAC Scientists Receive...  

NLE Websites -- All DOE Office Websites (Extended Search)

at SLAC's Linac Coherent Light Source (LCLS) by more efficiently transforming its electron energy into X-rays. The LCLS is an X-ray free-electron laser, or XFEL, and its...

67

SLAC National Accelerator Laboratory - Former SLAC Intern is...  

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Former SLAC Intern is Youngest to Lead LCLS Experiment By Glenn Roberts Jr. April 4, 2013 Stephanie Mack, 20, read and reread the email in disbelief. After spending time during the...

68

SLAC National Accelerator Laboratory - SLAC Public Tour Guide...  

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SLAC Public Tour Guide Closing in on Ph.D. and America's Elite Runners By Diane Rezendes Khirallah January 30, 2012 Ph.D. candidate Keith Bechtol, who's been researching gamma-ray...

69

SLAC National Accelerator Laboratory - Fermi-LAT Designer Awarded...  

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said. Now with the Santa Cruz Institute for Particle Physics, Atwood was a long-time SLAC National Accelerator Laboratory particle physicist who maintains his lab ties through...

70

SLAC National Accelerator Laboratory - Turning Data Into Wild...  

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researchers at KIPAC, the Kavli Institute for Particle Astrophysics andCosmology, at SLAC National Accelerator Laboratory and StanfordUniversity. Rather than relying purely...

71

Secretary Chu Speaks at SLAC National Accelerator Laboratory  

Energy.gov (U.S. Department of Energy (DOE))

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

72

SLAC National Accelerator Laboratory - Shaken, Not Heated: the...  

NLE Websites -- All DOE Office Websites (Extended Search)

Working at the SLAC National Accelerator Laboratory's Linear Coherent Light Source (LCLS), the scientists aimed intense, 130-femtosecond-long pulses of terahertz light at...

73

SLAC National Accelerator Laboratory - Director of Accelerator...  

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Committee on Appropriations asked the US Department of Energy (DOE) to submit a strategic plan for accelerator R&D by June 2012. The DOE asked me to lead a task force to...

74

Finding of No Significant Impact for the Construction and Operation of the Linac Coherent Light Source (LCLS) at the Stanford Linear Accelerator Center (SLAC), California (DOE/EA-1426) (2/28/03)  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

U.S. Department of Energy (DOE) U.S. Department of Energy (DOE) Finding of No Significant Impact Construction and Operation of the Linac Coherent Light Source (LCLS) at the Stanford Linear Accelerator Center (SLAC), California. AGENCY: U.S. Department of Energy (DOE) ACTION: Finding of No Significant Impact (FONSI) SUMMARY: The U.S. Department of Energy (DOE) has prepared an Environmental Assessment (EA), DOE/EA-1426, evaluating the proposed action to construct and operate the Linac Coherent Light Source (LCLS) at the Stanford Linear Accelerator Center (SLAC). Based upon the information and analyses in the EA, the DOE has determined that the proposed federal action does not significantly affect the quality of the human environment within the meaning of the National Environmental Policy Act of 1969.

75

SLAC National Accelerator Laboratory - New Analysis Shows How...  

NLE Websites -- All DOE Office Websites (Extended Search)

a researcher with the Structure Determination Core of the Joint Center for Structural Genomics (JCSG) at the SSRL Directorate of SLAC. "But often these movements are very subtle...

76

SLAC National Accelerator Laboratory - Astrophysics and Cosmology  

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Astrophysics and Cosmology A night time aerial image of one of the labs at SLAC SLAC astrophysicists and cosmologists play leading roles in the study of the high-energy universe,...

77

SLAC National Accelerator Laboratory - Transportation Options  

NLE Websites -- All DOE Office Websites (Extended Search)

Transportation SLAC and Stanford can be reached by a variety of transportation options. There are many resources to help you plan your trip to and around SLAC and Stanford. The...

78

SLAC National Accelerator Laboratory - Media Resources  

NLE Websites -- All DOE Office Websites (Extended Search)

about the laboratory. If you don't find what you need on this page, please contact the SLAC Media Relations Manager: Andy Freeberg afreeberg@slac.stanford.edu 650-926-4359 LATEST...

79

SLAC National Accelerator Laboratory - Soichi Wakatsuki Joins...  

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Soichi Wakatsuki Joins SLAC Faculty By Glennda Chui January 22, 2013 One of SLAC's newest faculty members, Soichi Wakatsuki, says it was not any one thing that drew him here to...

80

SLAC National Accelerator Laboratory - SLAC Public Lecture: Particle...  

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Division will present a free public lecture, "Particle Accelerator on a Chip." Accelerators are huge and expensive, miles-long tubes that produce high-energy particles to...

Note: This page contains sample records for the topic "accelerator center slac" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


81

SLAC National Accelerator Laboratory - Unexpected Allies Help...  

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& Housing Transportation News Feature Archive Unexpected Allies Help Bacteria Clean Uranium From Groundwater By Lori Ann White March 7, 2013 Since 2009, SLAC scientist John...

82

SLAC National Accelerator Laboratory - Lodging & Housing Information  

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& Housing Information STANFORD GUEST HOUSE PHOTO: Stanford Guest House Front Facade This comfortable and convenient housing structure is located on SLAC's campus and is just a...

83

SLAC National Accelerator Laboratory - Educational and Outreach...  

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HIGH SCHOOL PROGRAMS Raising Interest in Science and Engineering (RISE) Program SLAC High School Science Bowl UNDERGRADUATE AND GRADUATE PROGRAMS Community College...

84

SLAC National Accelerator Laboratory - Tom Devereaux Appointed...  

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SIMES By Glennda Chui February 21, 2012 Tom Devereaux, a professor of photon science at SLAC and Stanford University, has been appointed director of SIMES, the Stanford Institute...

85

SLAC National Accelerator Laboratory - Environmental Science  

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and Environmental Interface Science at SSRL Environmental Remediation Science at SSRL Science Focus Area: SSRL Environmental Remediation Program X-ray Science at SLAC...

86

SLAC National Accelerator Laboratory - Site Index  

NLE Websites -- All DOE Office Websites (Extended Search)

(Experimental Group K) Particle Physics and Astrophysics Faculty PEP-II PEP-II Luminosity Phonebook (SLAC Directory) Photon Science Directorate Planning and Assessment Office...

87

SLAC National Accelerator Laboratory - Staff Resources - Modern...  

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Staff Central Services Safety & Training Policies & Procedures HR Services & Benefits Life @ SLAC Helpful Resources BenefitSU (Stanford) Computing Help Desk Controlled...

88

SLAC National Accelerator Laboratory - Surprising Competition...  

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Found in High-Temperature Superconductors By Mike Ross November 14, 2012 A team led by SLAC and Stanford scientists has made an important discovery toward understanding...

89

SLAC National Accelerator Laboratory - SLAC Physicists Help Design...  

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as consultants for more than eight years. They first assisted the company with accelerators for medical applications, contributing time and expertise outside of their regular...

90

Preliminary Notice of Violation, SLAC National Accelerator Laboratory -  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

SLAC National Accelerator SLAC National Accelerator Laboratory - WEA-2009-01 Preliminary Notice of Violation, SLAC National Accelerator Laboratory - WEA-2009-01 September 3, 2009 Notice of Violation issued to Stanford University related to a PVC Pipe Explosion at the SLAC National Accelerator Laboratory Pursuant to section 234C of the Atomic Energy Act, as amended, 42 U.S.C. § 2282c, and the Department of Energy's (DOE) regulations at 10 C.F.R. Part 851, Worker Safety and Health Program, DOE is issuing this Final Notice of Violation (FNOV) to Stanford University. The FNOV finds Stanford University liable for violations of DOE's worker safety and health requirements. The FNOV is based upon the Office of Enforcement's July 23 , 2008, Investigation Report and a careful and thorough review of all

91

SLAC National Accelerator Laboratory - X-rays Reveal How Soil...  

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2012 Menlo Park, Calif. - Researchers working at the U.S. Department of Energy's (DOE) SLAC National Accelerator Laboratory have used powerful X-rays to help decipher how certain...

92

SLAC National Accelerator Laboratory - X-ray Laser Sees Photosynthesis...  

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new window on the way plants generate the oxygen we breathe, researchers used an X-ray laser at the Department of Energy's (DOE) SLAC National Accelerator Laboratory to...

93

SLAC National Accelerator Laboratory - Researchers at SLAC Test...  

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experiment, we've created a unique facility for accelerator and free-electron-laser R&D, as well as establishing a team of experts who can execute such a program. If we have...

94

SLAC National Accelerator Laboratory - Bendable Crystals Resolve...  

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Bendable Crystals Resolve Properties of X-ray Pulses By Glenn Roberts Jr. September 12, 2012 A frustrating flaw in a set of custom crystals for an instrument at SLAC National...

95

SLAC National Accelerator Laboratory - Elementary Particle Physics  

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experiment and is contributing to the ATLAS science program. SLAC is also involved in R&D for future upgrades to components of the ATLAS detector. ATLAS and the LHC are...

96

SLAC National Accelerator Laboratory - Scientific Computing  

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data from the Large Area Telescope, the main instrument on the orbiting Fermi Gamma-ray Space Telescope. SLAC staff also contributes to the software that makes Fermi LAT...

97

SLAC National Accelerator Laboratory - Simple Wavelength Detector...  

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Detector Could Speed Data Communications By Mike Ross June 4, 2013 Researchers at SLAC and Stanford have created a new device, smaller than a grain of rice, that could...

98

SLAC National Accelerator Laboratory - Annual Users Conference...  

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Farrel W. Lytle Award on Oct. 24, during the 2011 SSRLLCLS Annual Users' Meeting at SLAC. The award ceremony capped the third day of the users' meeting, which drew more than...

99

SLAC National Accelerator Laboratory - Synchrotrons Play Role...  

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a longtime collaborator in Kobilka's work, is a member of the Photon Science faculty at SLAC and a professor of structural biology at Stanford University. He said, "Over the years,...

100

SLAC National Accelerator Laboratory - Maps and Directions  

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Maps & Directions The SLAC campus is located on 426 acres of Stanford University property, just three miles west of the university campus. The main entrance to the facilitiy is on...

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101

SLAC National Accelerator Laboratory - Annual Synchrotron Award...  

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Jr. October 22, 2013 Sean Brennan's decades of X-ray expertise keep pulling him back to SLAC even though he formally retired in 2008. During a recent visit to the lab, he accepted...

102

SLAC National Accelerator Laboratory - 2013 News Features  

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Dark Energy Survey Begins Sept. 3, 2013 LCLS Gets New Equipment, Upgrades During Downtime August 28, 2013 Ribosome Research Takes Shape at SLAC August 22, 2013 The Universe Through...

103

SLAC National Accelerator Laboratory - Physics Society Honors...  

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that makes a free-electron laser like SLAC's Linac Coherent Light Source (LCLS) so powerful. As accomplished as he is in beam physics, Ratner has a wide range of...

104

SLAC National Accelerator Laboratory - World's Most Powerful...  

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powers the sun. The experiments were carried out at SLAC's Linac Coherent Light Source (LCLS), whose rapid-fire laser pulses are a billion times brighter than those of any X-ray...

105

SLAC National Accelerator Laboratory - Local Congresswomen, Entreprene...  

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SLAC - and founder of Amprius - said light-source X-rays enable his researchers to see atomic-scale details of how innovative lithium-ion battery designs work without taking...

106

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

Office of Science (SC) Website

SLAC National SLAC National Accelerator Laboratory Laboratories 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 Policy and Evaluation Safety, Security and Infrastructure Laboratory Science Highlights Contact Information Office of Science U.S. Department of Energy 1000 Independence Ave., SW Washington, DC 20585 P: (202) 586-5430 Labs at-a-Glance: SLAC National Accelerator Laboratory Print Text Size: A A A RSS Feeds FeedbackShare Page SLAC National Accelerator Laboratory Logo Visit the SLAC National Accelerator

107

SLAC  

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WG1 - Accelerator Design Schedule WG1 - Accelerator Design Schedule Tuesday Wednesday Thursday Friday 9:00 NanoBPM/FEATHER/FONT Plenary IR RF Structures Joint session N. Delerue: FEATHER A. Seryi: NLC IR1/IR2 Layout/Lattices Z. Li: Structure parameter optimization P. Burrows: FONT F. Pilat: US Cold IR Design Cavity design issues - discussion N. Delerue: Kicker Design for FEATHER H. Yamaoka: Support tube R&D for Final Quad Roger Jones: Wakefield calculations DR/ATF 10:30 J.Frisch: Overview of SLAC R&D on Inertial Stabilization Frequency control tolerances - discussion T. Raubenheimer: Ions at ATF E.Doyle: Next generation sensor Gordon Bowden: Fabrication tolerances/model J. Wu: CSR All: Discussion on X-angle/Crab cavity status Tor Raubeneimer: Alignment sensitivities B. Nash: IBS in ATF

108

SLAC National Accelerator Laboratory - Scientific Programs  

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Programs Advanced Accelerator Research Particle accelerators are complicated machines, with hundreds of thousands of components that all need to be designed, engineered and...

109

Photon Science : SLAC National Accelerator Laboratory  

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Photon Science Photon Science Directorate | Science Highlights | Publications | SLAC Faculty Affairs | Org Chart Photon Science Faculty Arthur I. Bienenstock * Britt Hedman Anders Nilsson Gordon E. Brown, Jr. Keith O. Hodgson Jens Nørskov Axel T. Brunger Norbert Holtkamp R. Paul Phizackerley * Herman Winick * Philip Bucksbaum Zhirong Huang Piero A. Pianetta Bob Byer Harold Y. Hwang Srinivas Raghu Bruce Clemens Kent Irwin David A. Reis Yi Cui Chi-Chang Kao Zhi-Xun Shen Thomas Devereaux Ingolf Lindau * Edward I. Solomon Sebastian Doniach Aaron Lindenberg Joachim Stöhr Kelly Gaffney Wendy Mao Soichi Wakatsuki John Galayda Todd J. Martinez William Weis (Chair) Jerry Hastings Nicholas Melosh Helmut Wiedemann * *Emeritus Visiting/Consulting Faculty Faculty Affairs Office Particle Physics and Astrophysics Faculty

110

SLAC National Accelerator Laboratory - Facility for Advanced...  

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2012 as a test bed for technologies that will power the next generation of particle accelerators. It also hosts experiments that require extreme electric and magnetic fields. Visit...

111

SLAC National Accelerator Laboratory - Photon Science  

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programs in chemical, materials and energy sciences, including work at three joint SLACStanford research centers. Many of these programs use our X-ray light sources as a...

112

Independent Oversight Inspection, Stanford Linear Accelerator Center -  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Stanford Linear Accelerator Stanford Linear Accelerator Center - January 2007 Independent Oversight Inspection, Stanford Linear Accelerator Center - January 2007 January 2007 Inspection of Environment, Safety, and Health Programs at the Stanford Linear Accelerator Center The U.S. Department of Energy (DOE) Office of Independent Oversight, within the Office of Health, Safety and Security, conducted an inspection of environment, safety, and health (ES&H) programs at the DOE Stanford Linear Accelerator Center (SLAC) during October and November 2006. The inspection was performed by Independent Oversight's Office of Environment, Safety and Health Evaluations. Since the 2004 Type A electrical accident, SSO and SLAC have made improvements in many aspects of ES&H programs. However, the deficiencies in

113

SLAC National Accelerator Laboratory - Visitor Map  

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25 29-E Main Control Center (MCC) 5 32-F Main Gate (Information Booth) 83 31-B Master Substation 16 30-F Medical (Room 11) 28 30-E Metal Stores Shelter 29 29-F Operations...

114

Secretary of Energy Advisory Board SLAC National Accelerator Laboratory  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

SLAC National Accelerator Laboratory SLAC National Accelerator Laboratory Menlo Park, CA April 11, 2011 Agenda Open Plenary Meeting Session 8:00 AM - 8:15 AM Welcome and Overview Dr. William Perry 8:15 AM - 8:45 AM Key Issues for DOE Secretary Steven Chu 9:00 AM - 9:45 AM SLAC Overview Persis Drell 9:45 AM - 10:15 AM Breakthrough in Protein Structure Determination Enabled by LCLS Henry Chapman 10:15 AM - 11:00 AM Lab Overview - Progress and Path Forward George Miller 11:00 AM - 11:45 AM Stockpile Stewardship Overview Bruce Goodwin 11:45 AM - 12:30 PM Energy of the Future - National Ignition Facility (NIF) and Laser Inertial Fusion Energy (LIFE) Ed Moses 12:30 PM - 1:45 PM Lunch Break 2:00 PM - 2:30 PM Subcommittee Reports 2:30 PM - 3:30 PM Discussion of DOD-DOE MOU

115

SLAC National Accelerator Laboratory - Persis Drell to Step Down...  

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Press Release Archive Persis Drell to Step Down as SLAC Laboratory Director November 1, 2011 Stanford University announced today that Persis S. Drell, director at SLAC National...

116

SLAC National Accelerator Laboratory - SSI Celebrates 40 Years...  

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August 2, 2012 Along with lectures, poster sessions, discussions, and the traditional SLAC vs. SSI soccer game, the 160 attendees from five continents who converged on SLAC for...

117

2011 Annual Planning Summary for Stanford Linear Accelerator...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Stanford Linear Accelerator Center Site Office (SLAC) 2011 Annual Planning Summary for Stanford Linear Accelerator Center Site Office (SLAC) The ongoing and projected Environmental...

118

SLAC National Accelerator Laboratory - Record 30 Teams Compete...  

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Record 30 Teams Compete in Science Bowl at SLAC By Diane Rezendes Khirallah February 12, 2013 SLAC played host to the regional Science Bowl last weekend, with a record 150...

119

SLAC National Accelerator Laboratory - Our Vision and Mission  

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Our Vision and Mission All employee gathering at SLAC SLAC is one of 10 national laboratories under the stewardship of the U.S. Department of Energy Office of Science. To learn...

120

SLAC National Accelerator Laboratory - Rapid Beam-switching Allows...  

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Rapid Beam-switching Allows SLAC X-ray Laser to Multitask By Glenn Roberts Jr. August 9, 2013 A high-energy SLAC laser that creates shock waves and superhot plasmas needs to cool...

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121

SLAC National Accelerator Laboratory - SSRL Experiments to Focus...  

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SSRL Experiments to Focus on Solar Tech By Glenn Roberts Jr. November 7, 2012 SLAC's Stanford Synchrotron Radiation Lightsource will play a central role in three research projects...

122

SLAC National Accelerator Laboratory - X-ray Laser Pulses in...  

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SLAC researchers have demonstrated for the first time how to produce pairs of X-ray laser pulses in slightly different wavelengths, or colors, with finely adjustable intervals...

123

SLAC National Accelerator Laboratory - X-ray Laser Probes Biomolecules...  

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experiments, reported this week in Science, used SLAC's Linac Coherent Light Source (LCLS) to obtain ultra-high-resolution views of crystallized biomolecules, including a small...

124

SLAC National Accelerator Laboratory - X-ray Science  

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energy technologies. SLAC's unique X-ray facilities - the Linac Coherent Light Source (LCLS) and the Stanford Synchrotron Radiation Lightsource (SSRL) - attract thousands of...

125

SLAC National Accelerator Laboratory - Egg-cellent World-record...  

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Lodging & Housing Transportation News Feature Archive Egg-cellent World-record Battery Performance By Mike Ross January 8, 2013 SLAC and Stanford scientists have set a...

126

SLAC National Accelerator Laboratory - A Celebration 50 Years...  

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that SLAC is well positioned to investigate, from particle discoveries beyond the Higgs boson, to explorations of the abundant dark matter that hides in plain sight throughout...

127

SLAC National Accelerator Laboratory - New Tool Puts LCLS X-ray...  

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New Tool Puts LCLS X-ray Crystallography on a Diet By Glenn Roberts Jr. October 29, 2012 A tiny device invented at SLAC National Accelerator Laboratory will make it much easier for...

128

SLAC National Accelerator Laboratory - FACET Prepares to Shine  

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exclaimed, "These drawings were made before I was born" Wienands had high praise for his tight-knit commissioning team, and in particular for the many contributors from SLAC...

129

SLAC National Accelerator Laboratory - 2013 Press Release Archive  

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2013 Press Release Archive July 28, 2013 Speed Limit Set for Ultrafast Electrical Switch June 11, 2013 Research Paints New Picture of 'Dinobird' Feathers June 10, 2013 SLAC X-rays...

130

SLAC National Accelerator Laboratory - X-ray Vision Exposes Aerosol...  

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up exciting possibilities in the study of aerosol dynamics using highly focused X-ray lasers, such as SLAC's Linac Coherent Light Source (LCLS). "Our study shows that LCLS can...

131

SLAC National Accelerator Laboratory - 20th Anniversary of a...  

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theoretical work on using linacs and storage rings as drivers for X-ray free electron lasers. But his suggestion that it would be possible to modify and use part of the SLAC linac...

132

SLAC National Accelerator Laboratory - RASICAM Leaves for Chile...  

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RASICAM Leaves for Chile and the Dark Energy Search By Lori Ann White May 25, 2011 Last week the SLAC-built Radiometric All Sky Infrared Camera, or RASICAM, passed its final...

133

SLAC National Accelerator Laboratory - Viewing the Ultra-fast...  

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femtoseconds-these instants of instants-researchers at the LCLS can make stop-action animations of atomic processes. Staff Scientist Apurva Mehta, a fifteen-year veteran of SLAC,...

134

SLAC National Accelerator Laboratory - Annual Science Bowl at...  

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Annual Science Bowl at SLAC a Launch Pad for National Competition By Diane Rezendes Khirallah February 14, 2012 More than 100 science students from 20 Bay Area high schools...

135

SLAC National Accelerator Laboratory - Actor Alan Alda Visits...  

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Actor Alan Alda Visits SLAC to Discuss Communicating Science to the Public By Lori Ann White October 30, 2012 Actor and writer Alan Alda is in a long-term, committed relationship...

136

SLAC National Accelerator Laboratory - Chi-Chang Kao, Noted X...  

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Press Release Archive Chi-Chang Kao, Noted X-ray Scientist, Named SLAC Director October 24, 2012 Stanford University press release Chi--Chang Kao, an associate laboratory director...

137

SLAC National Accelerator Laboratory - BaBar Searches for New...  

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January 31, 2013 Scientists analyzing data from the BaBar experiment, which operated at SLAC between 1999 and 2008, recently published the results of a search for signs of...

138

SLAC National Accelerator Laboratory - Particle Physics and Astrophysi...  

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to produce exotic forms of matter that haven't existed since the start of the universe. SLAC is involved in the highest-energy experiments ever undertaken, at Europe's Large Hadron...

139

SLAC National Accelerator Laboratory - BaBar Data Preserved in...  

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to keep the BaBar virtual world safe and unchanging, isolated not only from the SLAC network, but from the rest of the World Wide Web. BaBar collaboration members can...

140

SLAC National Accelerator Laboratory - Obama Honors Burton Richter...  

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Prestigious Enrico Fermi Award By Mike Pena January 12, 2012 President Obama has named SLAC director emeritus and Nobel laureate Burton Richter as one of two winners of the Enrico...

Note: This page contains sample records for the topic "accelerator center slac" from the National Library of EnergyBeta (NLEBeta).
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141

SLAC National Accelerator Laboratory - 'Beam Sharing': Two Experiments...  

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about 250 meters apart. This much-anticipated feat - the result of years of work by SLAC scientists - was made possible by key contributions from researchers in three nations....

142

SLAC National Accelerator Laboratory - An Impressive and Growing...  

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27, 2013 In less than a decade, SLAC has built up an impressive array of dozens of laser systems - and a team of laser scientists and engineers - with capabilities that make...

143

SLAC National Accelerator Laboratory - Ultrafast Lasers at the...  

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Lasers at the Linac Coherent Light Source By Alan Fry, LCLS Laser Group July 5, 2011 The Linac Coherent Light Source at SLAC is the world's first hard X-ray free-electron laser, or...

144

SLAC National Accelerator Laboratory - X-ray Laser Brings Cellular...  

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a March experiment indicates it has, for the first time, used an X-ray free-electron laser - SLAC's Linac Coherent Light Source - to reconstitute the structure of a G...

145

SLAC National Accelerator Laboratory - New Life for Old Electrons...  

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New Life for Old Electrons in Biological Imaging, Sensing Technologies By Janet Rae-Dupree November 8, 2011 Using leftover high-speed electrons from SLAC's Linac Coherent Light...

146

SLAC National Accelerator Laboratory - New Technique Traces Ejected...  

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from atoms, researchers used an X-ray laser, SLAC's Linac Coherent Light Source (LCLS), to measure and sort the ejected electrons and discover how this process takes place....

147

SLAC National Accelerator Laboratory - Sorting Millions of Snapshots...  

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Sorting Millions of Snapshots from the LCLS By Glennda Chui August 30, 2011 The great thing about SLAC's Linac Coherent Light Source is that it churns out incredible volumes of...

148

SLAC National Accelerator Laboratory - Speed Limit Set for Ultrafast...  

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more powerful computing devices. Scientists using SLAC's Linac Coherent Light Source (LCLS) X-ray laser found that it takes only 1 trillionth of a second to flip the on-off...

149

SLAC National Accelerator Laboratory - Taking Aim at Electrons...  

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out of atoms with powerful X-ray laser pulses from SLAC's Linac Coherent Light Source (LCLS). The technique, developed by an international research team and reported in the April...

150

Stanford Linear Accelerator Center Stanford Synchrotron Radiation Laboratory  

E-Print Network (OSTI)

1 of 13 10/16/2006 FACILITY EMERGENCY PLAN February, 2006 SSRL Safety Office Stanford Linear Accelerator Center Menlo Park, California TABLE OF CONTENTS PREFACE SSRL EMERGENCY PLAN SECTION A: SAFETY RESPONSIBILITIES 1.0 SSRL Emergency Personnel 1.1 SLAC Person - In - Charge (PIC) 1.2 SSRL Beamline Duty Operator

Ford, James

151

SLAC National Accelerator Laboratory - Crowd-sourcing the Future...  

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Crowd-sourcing the Future of Accelerators By Janet Rae-Dupree January 12, 2012 Accelerator technology has made huge leaps forward, prompting important developments well beyond high...

152

Photo Credit: Peter GinterSLAC National Accelerator Laboratory Dark Energy  

E-Print Network (OSTI)

Photo Credit: Peter GinterSLAC National Accelerator Laboratory #12;Dark Energy 70% Dark Matter 26 and Advanced Camera for Surveys #12;Dark Energy 70% Dark Matter 26% Ordinary Matter 4% #12;Dark Energy 70% Dark Matter 26% Ordinary Matter 4% #12;Dark Energy 70% Dark Matter 26% Ordinary Matter 4% #12;Dark Energy 70

Osheroff, Douglas D.

153

Using The SLAC Two-Mile Accelerator for Powering an FEL  

Science Conference Proceedings (OSTI)

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

Barletta, W.A.; /LLNL, Livermore; Sessler, A.M.; /LBL, Berkeley; Yu, L.H.; /Brookhaven

2012-06-29T23:59:59.000Z

154

SLAC National Accelerator Laboratory - LCLS-II Project Director...  

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winner of the Robert R. Wilson Prize for Achievement in the Physics of Particle Accelerators, awarded by the American Physical Society. The prize, which honors and encourages...

155

Fermilab | Illinois Accelerator Research Center | Illinois Accelerator  

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photo: IARC photo: IARC As envisioned, the Illinois Accelerator Research Center will provide approximately 83,000 square feet of technical, office and classroom space for scientists and industrial partners. The Illinois Accelerator Research Center (IARC) is a new accelerator research facility being built at Fermi National Accelerator Laboratory. At the Illinois Accelerator Research Center, scientists and engineers from Fermilab, Argonne and Illinois universities will work side by side with industrial partners to research and develop breakthroughs in accelerator science and translate them into applications for the nation's health, wealth and security. Located on the Fermilab campus this 83,000 square foot, state-of-the-art facility will house offices, technical and educational space to study

156

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

Science Conference Proceedings (OSTI)

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

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

2012-07-05T23:59:59.000Z

157

SLAC National Accelerator Laboratory - Proof: Cosmic Rays Come...  

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in the Feb. 15 issue of Science, the team identified two ancient supernovas whose shock waves accelerated protons to nearly the speed of light, turning them into what we call...

158

SLAC National Accelerator Laboratory - Fermi's Latest Gamma-ray...  

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Fermi's Latest Gamma-ray Census Highlights Cosmic Mysteries By Francis Reddy, NASAGoddard Space Flight Center September 9, 2011 Every three hours, NASA's Fermi Gamma-ray Space...

159

SLAC | 2011 X-Ray Spectroscopy of Magnetic Solids workshop -...  

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Abstracts Agenda Location Visitor Information Transportation About XRMS BaBar detector, SLAC LCLS experimental stations, SLAC Panofsky auditorium, SLAC SLAC National Accelerator...

160

SLAC National Accelerator Laboratory - X-ray Laser Helps Fight...  

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human health. "This is the first new biological structure solved with a free-electron laser," said Henry Chapman of the Center for Free-Electron Laser Science in Hamburg,...

Note: This page contains sample records for the topic "accelerator center slac" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
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161

Summary of SLAC'S SEY Measurement On Flat Accelerator Wall Materials  

E-Print Network (OSTI)

The electron cloud effect (ECE) causes beam instabilities in accelerator structures with intense positively charged bunched beams. Reduction of the secondary electron yield (SEY) of the beam pipe inner wall is effective in controlling cloud formation. We summarize SEY results obtained from flat TiN, TiZrV and Al surfaces carried out in a laboratory environment. SEY was measured after thermal conditioning, as well as after low energy, less than 300 eV, particle exposure.

F. Le Pimpec; R. E. Kirby; F. K. King; M. Pivi

2007-11-09T23:59:59.000Z

162

SLAC/CERN High Gradient Tests of An X Band Accelerating Section  

Science Conference Proceedings (OSTI)

High frequency linear collider schemes envisage the use of rather high accelerating gradients: 50 to 100 MV/m for X-band and 80 MV/m for CLIC. Because these gradients are well above those commonly used in accelerators, high gradient studies of high frequency structures have been initiated and test facilities have been constructed at KEK [1], SLAC [2] and CERN [3]. The studies seek to demonstrate that the above mentioned gradients are both achievable and practical. There is no well-defined criterion for the maximum acceptable level of dark current but it must be low enough not to generate unacceptable transverse wakefields, disturb beam position monitor readings or cause RF power losses. Because there are of the order of 10,000 accelerating sections in a high frequency linear collider, the conditioning process should not be too long or difficult. The test facilities have been instrumented to allow investigation of field emission and RF breakdown mechanisms. With an understanding of these effects, the high gradient performance of accelerating sections may be improved through modifications in geometry, fabrication methods and surface finish. These high gradient test facilities also allow the ultimate performance of high frequency/short pulse length accelerating structures to be probed. This report describes the high gradient test at SLAC of an X-band accelerating section built at CERN using technology developed for CLIC.

Loewen, Roderick J

2003-06-13T23:59:59.000Z

163

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

SciTech Connect

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

Not Available

1988-07-01T23:59:59.000Z

164

Wakefield Simulations for the Laser Acceleration Experiment at SLAC  

SciTech Connect

Laser-driven acceleration in dielectric photonic band gap structures can provide gradients on the order of GeV/m. The small transverse dimension of the structure, on the order of the laser wavelength, presents interesting wakefield-related issues. Higher order modes can seriously degrade beam quality, and a detailed understanding is needed to mitigate such effects. On the other hand, wakefields also provide a direct way to probe the interaction of a relativistic bunch with the synchronous modes supported by the structure. Simulation studies have been carried out as part of the effort to understand the impact on beam dynamics, and to compare with data from beam experiments designed to characterize candidate structures. In this paper, we present simulation results of wakefields excited by a sub-wavelength bunch in optical photonic band gap structures.

Ng, Johnny

2012-04-18T23:59:59.000Z

165

SLAC Linac Coherent Light Source  

NLE Websites -- All DOE Office Websites (Extended Search)

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

166

The UCLA/SLAC Ultra-High Gradient Cerenkov Wakefield Accelerator Experiment  

SciTech Connect

An experiment is planned to study the performance of dielectric Cerenkov wakefield accelerating structures at extremely high gradients in the GV/m range. This new UCLA/SLAC/USC collaboration will take advantage of the unique SLAC FFTB electron beam and its demonstrated ultra-short pulse lengths and high currents (e.g., {delta}{sub z} = 20 {micro}m at Q = 3 nC). The electron beam will be focused down and sent through varying lengths of fused silica capillary tubing with two different sizes: ID = 200 {micro}m/OD = 325 {micro}m and ID = 100 {micro}m/OD = 325 {micro}m. The pulse length of the electron beam will be varied in order to alter the accelerating gradient and probe the breakdown threshold of the dielectric structures. In addition to breakdown studies, we plan to collect and measure coherent Cerenkov radiation emitted from the capillary tube to gain information about the strength of the accelerating fields.

Thompson, M.C.; Badakov, H.; Rosenzweig, J.B.; Travish, G.; /UCLA; Hogan, M.; Ischebec, R.; Siemann, R.; Walz, D.; /SLAC; Scott, A.; /UC, Santa Barbara; Yoder, R.; /Manhattan Coll., Riverdale

2006-01-25T23:59:59.000Z

167

Facility for Advanced Accelerator Experimental Tests (FACET) at SLAC and its Radiological Considerations  

SciTech Connect

Facility for Advanced Accelerator Experimental Tests (FACET) in SLAC will be used to study plasma wakefield acceleration. FLUKA Monte Carlo code was used to design a maze wall to separate FACET project and LCLS project to allow persons working in FACET side during LCLS operation. Also FLUKA Monte Carlo code was used to design the shielding for FACET dump to get optimum design for shielding both prompt and residual doses, as well as reducing environmental impact. FACET will be an experimental facility that provides short, intense pulses of electrons and positrons to excite plasma wakefields and study a variety of critical issues associated with plasma wakefield acceleration [1]. This paper describes the FACET beam parameters, the lay-out and its radiological issues.

Mao, X.S.; Leitner, M.Santana; Vollaire, J.

2011-08-22T23:59:59.000Z

168

Advocacy for the Archives and History Office of the SLAC National Accelerator Laboratory: Stages and Methods  

SciTech Connect

Advocating for the good of the SLAC Archives and History Office (AHO) has not been a one-time affair, nor has it been a one-method procedure. It has required taking time to ascertain the current and perhaps predict the future climate of the Laboratory, and it has required developing and implementing a portfolio of approaches to the goal of building a stronger archive program by strengthening and appropriately expanding its resources. Among the successful tools in the AHO advocacy portfolio, the Archives Program Review Committee has been the most visible. The Committee and the role it serves as well as other formal and informal advocacy efforts are the focus of this case study My remarks today will begin with a brief introduction to advocacy and outreach as I understand them, and with a description of the Archives and History Office's efforts to understand and work within the corporate culture of the SLAC National Accelerator Laboratory. I will then share with you some of the tools we have employed to advocate for the Archives and History Office programs and activities; and finally, I will talk about how well - or badly - those tools have served us over the past decade.

Deken, Jean Marie; /SLAC

2009-06-19T23:59:59.000Z

169

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

Science Conference Proceedings (OSTI)

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

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

2009-10-30T23:59:59.000Z

170

SLAC/CERN high gradient tests on an X-band accelerating section  

E-Print Network (OSTI)

High frequency linear collider schemes envisage the use of rather high accelerating gradients: 50 to 100 MV/m for X-band and 80 MV/m for CLIC. Because these gradients are well above those commonly used in accelerators, high gradient studies of high frequency structures have been initiated and test facilities have been constructed at KEK [1], SLAC [2] and CERN [3]. The studies seek to demonstrate that the above mentioned gradients are both achievable and practical. There is no well-defined criterion for the maximum acceptable level of dark current but it must be low enough not to generate unacceptable transverse wakefields, disturb beam position monitor readings or cause RF power losses. Because there are of the order of 10,000 accelerating sections in a high frequency linear collider, the conditioning process should not be too long or difficult. The test facilities have been instrumented to allow investigation of field emission and RF breakdown mechanisms. With an understanding of these effects, the high grad...

Wang, J W; Loewen, R J; Ruth, Ronald D; Vlieks, A E; Wilson, Ian H; Wuensch, Walter

1995-01-01T23:59:59.000Z

171

SLAC-PUB-3659  

NLE Websites -- All DOE Office Websites (Extended Search)

SLAC-PUB-3659 DE85 013052 FORTY-FIVE YEARS OF e+e" ANNIHILATION PHYSICS: 1956 to 2001* B U R T O N R I C H T E R Stanford Linear Accelerator Center Stanford University, Stanford, California, 94S05 ABSTRACT Electron-positron physics is an appropriate subject to talk about at this sym- posium dedicated to W. K. H. Panofsky because the development of e+e" physics with storage rings has been intimately connected with laboratories that Pief has headed - the High Energy Physics laboratory at Stanford that he directed until 1962, and SLAC which he has directed since then. But talking only about the past gives no scope for the imagination and since I like to speculate, I will take on the task in this talk of describing not only what has been, but of what will be.

172

SLAC-PUB-372  

NLE Websites -- All DOE Office Websites (Extended Search)

372 372 September 1967 NUCLEON FORM FACTORS ABOVE 6 GeV* R. E. Taylor Paper delivered at the International Symposium on Electron and Photon Interactions at High Energies, Stanford Linear Accelerator Center, September 1967. * Work supported by U. S. Atomic Energy Commission. I NUCLEON FORM FACTORS ABOVE 6 GeV R. E. Taylor Stanford Linear Accelerator Center Stanford University, Stanford, California I. INTRODUCTION This report describes the results from a preliminary analysis of an elastic electron-proton scattering experiment, performed at the Stanford Linear Accel- erator Center. The experiment is being carried out by a collaboration of physi- cists from SLAC, Cal Tech, and M.I. T. * The preceding paper by G. Weber has summarized the data on proton form

173

Nanoscale Imaging of Airborne Particles Mike Bogan Stanford PULSE Institute, SLAC National Accelerator Laboratory, 2575 Sand Hill Road,  

NLE Websites -- All DOE Office Websites (Extended Search)

Diagnostics with an X-ray Laser? Lessons from the First Diagnostics with an X-ray Laser? Lessons from the First Nanoscale Imaging of Airborne Particles Mike Bogan Stanford PULSE Institute, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA 94025, USA What does airborne particulate matter look like? How do we develop quantitative descriptors for particles of complex morphology? These challenges were highlighted in the NIST workshop report "Aerosol Metrology Needs for Climate Science" (Dec, 2011). Sure, we can capture aerosol particles on surfaces - removing them from their airborne state - and probe them with high resolution optical and chemical imaging tools, but what information do we lose about the airborne particles? How can we follow dynamics? In this talk we will explore these very basic questions and their importance to combustion

174

Secretary Chu's powerpoint for a speech commemorating the 50th Anniversary of SLAC National Accelerator Laboratory.  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

How technology can change the How technology can change the world Panofsky Auditorium SLAC, Stanford University 24 August, 2012 Bill Hansen Sigurd Varian John Woodyard David Webster Russell Varian The Klystron 3 Steven Chu and Arun Majumdar Nature 488, pp. 294 - 303 (2012) August 16 issue. 4 The Industrial Revolution and the transition from horse power to horsepower transformed the world J.M.W. Turner (1839) The H.M.S. Temeraire, distinguished in Battle of Trafalgar, being towed to her last berth to be broken up for scrap. 5 The gasoline-powered internal combustion engine rapidly replace horse powered vehicles. New York, 5 th Avenue, ~1890s Detroit, circa 1920 The ~160,000 horses in New York and Brooklyn in 1880 were producing 3 - 4 millions pounds of horse manure and 40,000 gallons urine a day.*

175

SLAC National Accelerator Laboratory - SPEAR-heading X-ray Science...  

NLE Websites -- All DOE Office Websites (Extended Search)

added a tangential spout to the accelerator's design as an outlet for this synchrotron radiation. In a pilot project, Stanford University scientists Sebastian Doniach, Ingolf...

176

The Illinois Accelerator Research Center, or IARC, will  

NLE Websites -- All DOE Office Websites (Extended Search)

Illinois Accelerator Research Center, or IARC, will provide a state-of-the-art facility for accelerator research, education and industrialization. Scientists and engineers from...

177

SLAC National Accelerator Laboratory -  

NLE Websites -- All DOE Office Websites (Extended Search)

Experiment Sets 'Speed Limit' On Electrical Switching in Magnetite LCLS Measures Ultrafast Switch X-ray Laser Experiment Sets 'Speed Limit' On Electrical Switching in...

178

FACET: SLAC___s New User Facility  

Science Conference Proceedings (OSTI)

FACET (Facility for Advanced Accelerator Experimental Tests) is a new User Facility at SLAC National Accelerator Laboratory. The first User Run started in spring 2012 with 20 GeV, 3 nC electron beams. The facility is designed to provide short (20 {micro}m) bunches and small (20 {micro}m wide) spot sizes, producing uniquely high power beams. FACET supports studies from many fields but in particular those of Plasma Wakefield Acceleration and Dielectric Wakefield Acceleration. The creation of drive and witness bunches and shaped bunch profiles is possible with 'Notch' Collimation. FACET is also a source of THz radiation for material studies. Positrons will be available at FACET in future user runs. We present the User Facility and the available tools and opportunities for future experiments.

Clarke, C.I.; Decker, F.-J.; England, R.J.; Erickson, R.A.; Hast, C.; Hogan, M.J.; Li, S.Z.; Litos, M.D.; Nosochkov, Y.; Seeman, J.T.; Sheppard, J.; Wienands, U.; Woodley, M.; Yocky, G.; /SLAC

2012-05-16T23:59:59.000Z

179

Commissioning of SLAC SLD 45-Degree Chambers  

E-Print Network (OSTI)

The SLD experiment at the Stanford Linear Accelerator Center had a significant gap in its muon tracking coverage, provided by the Warm Iron Calorimeter. Supplemental planes of limited streamer tube chambers were added to improve the coverage in the vicinity of the gap at 0.65 commissioning of the forty-five degree chamber region of the SLAC SLD Warm Iron Calorimeter is presented. This task involved the completion of the forty-five degree chamber region geometry for the Warm Iron Calorimeter's fitter and swimmer and the changing of the way multiple scattering effects are treated in the fitter algorithm.

V. O. Eschenburg

2002-07-30T23:59:59.000Z

180

SLAC National Accelerator Laboratory - SLAC Physicists Comment...  

NLE Websites -- All DOE Office Websites (Extended Search)

have found strong hints in their data of something that could be a low-mass Higgs boson - and added that they are well-situated to give a more definitive answer by the end...

Note: This page contains sample records for the topic "accelerator center slac" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


181

SLAC National Accelerator Laboratory - SLAC Joins Partnership...  

NLE Websites -- All DOE Office Websites (Extended Search)

by the Energy Department since 2010. Other Hubs are devoted to modeling and simulation of nuclear reactors, achieving major improvements in the energy efficiency of buildings and...

182

SLAC National Accelerator Laboratory - SLAC Among Institutions...  

NLE Websites -- All DOE Office Websites (Extended Search)

Among Institutions Awarded Millions in Grants from Bay Area Photovoltaics Consortium By Mark Shwartz May 17, 2012 from Stanford Report The Bay Area Photovoltaic Consortium (BAPVC)...

183

SLAC National Accelerator Laboratory - SLAC Welcomes Displaced...  

NLE Websites -- All DOE Office Websites (Extended Search)

of Tokyo. Their experiments are similar enough that they were often scheduled one right after the other at the Photon Factory. "We couldn't do our experiments in KEK so,...

184

SLAC National Accelerator Laboratory - SLAC, Stanford Materials...  

NLE Websites -- All DOE Office Websites (Extended Search)

electronics and other applications. A paper published online this week in Nature Nanotechnology describes how they combined two previously known topological insulators to create...

185

SLAC National Accelerator Laboratory - SLAC Professor Emeritus...  

NLE Websites -- All DOE Office Websites (Extended Search)

- the same mechanism that confers mass on fundamental particles and predicts the Higgs boson, the particle apparently found by the Large Hadron Collider this year. She and...

186

SLAC National Accelerator Laboratory - 'Architect' of SLAC's...  

NLE Websites -- All DOE Office Websites (Extended Search)

to Southern California, Neal took an active role in managing the finances for his homeowner association in Solana Beach. Neal had taken up flying as a hobby during his time at...

187

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

Energy.gov (U.S. Department of Energy (DOE))

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

188

HEP-Req_SLAC.ppt  

NLE Websites -- All DOE Office Websites (Extended Search)

For Accelerator Modeling For Accelerator Modeling Finite Element Approach Lie-Quan Lee SLAC National Accelerator Laboratory Large Scale Computing and Storage Requirements for High Energy Physics NERSC/ASCR/HEP Workshop, Washington D.C., November 12-13, 2009 NERSC Project * Project name: Advanced Modeling for Particle Accelerators * Principle Investigator: Kwok Ko * Participating institutions: - SLAC, BNL, FNAL, ORNL, TJNAF - CW09 Users * ANL * CERN * Cornell University * Los Alamos Lab * Michigan State University * Paul Scherrer Institut * Royal Holloway U London Scientific Objectives * Summarize your projects and its scientific objectives for the next 3-5 years * Compact Linear Collider (CLIC) * Simulating wakefield and evaluate HOM damping in Accelerating Structures (AS) and Power Extract and Transfer Structures (PETS)

189

SLAC synchronous condenser  

SciTech Connect

A synchronous condenser is a synchronous machine that generates reactive power that leads real power by 90{degrees} in phase. The leading reactive power generated by the condenser offsets or cancels the normal lagging reactive power consumed by inductive and nonlinear loads at the accelerator complex. The quality of SLAC`s utility power is improved with the addition of the condenser. The inertia of the condenser`s 35,000 pound rotor damps and smoothes voltage excursions on two 12 kilovolt master substation buses, improving voltage regulation site wide. The condenser absorbs high frequency transients and noise in effect ``scrubbing`` the electric system power at its primary distribution source. In addition, the condenser produces a substantial savings in power costs. Federal and investor owned utilities that supply electric power to SLAC levy a monthly penalty for lagging reactive power delivered to the site. For the 1993 fiscal year this totaled over $285,000 in added costs for the year. By generating leading reactive power on site, thereby reducing total lagging reactive power requirements, a substantial savings in electric utility bills is achieved. Actual savings of $150,000 or more a year are possible depending on experimental operations.

Corvin, C.

1995-06-01T23:59:59.000Z

190

Some Frontiers of Accelerator Physics  

E-Print Network (OSTI)

Center, Stanford, CA, SLAC-PUB- 5060, Lawrence BerkeleyConference, June 2-6, 1986, SLAC, 385 (1986); AM. SesslerCenter, Stanford, CA, SLAC-PUB-5039, Lawrence Livermore

Sessler, Andrew M.

2008-01-01T23:59:59.000Z

191

THE LABORATORY Located in Menlo Park, California, SLAC National  

NLE Websites -- All DOE Office Websites (Extended Search)

THE LABORATORY Located in Menlo Park, California, SLAC National Accelerator Laboratory is home to some of the world's most cutting-edge technologies, used by researchers worldwide...

192

SLAC E144 Plots, Simulation Results, and Data  

DOE Data Explorer (OSTI)

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

E144 Collaboration

193

Preprint History at SLAC  

NLE Websites -- All DOE Office Websites (Extended Search)

and Biased History of Preprint and Database Activities at the SLAC Library, 1962-1994 by L. Addis (with a few updates in Jan 1997, Jun 1999, Apr 2000, Jan 2002) 1962 SLAC Library...

194

SLAC - KEK: ISG10  

NLE Websites -- All DOE Office Websites (Extended Search)

- Corvin, Enomoto, Kuchler Conventional Facilities Conf. room (Bldg. 281) What is SLAC-KEK ISG Meeting? The SLAC-KEK ISG was formed in 1998, based on a Memorandum of...

195

Neutron dosimetry at SLAC: Neutron sources and instrumentation  

Science Conference Proceedings (OSTI)

This report summarizes in detail the dosimetric characteristics of the five radioisotopic type neutron sources ({sup 238}PuBe, {sup 252}Cf, {sup 238}PuB, {sup 238}PuF{sub 4}, and {sup 238}PuLi) and the neutron instrumentation (moderated BF{sub 3} detector, Anderson-Braun (AB) detector, AB remmeter, Victoreen 488 Neutron Survey Meter, Beam Shut-Off Ionization Chamber, {sup 12}C plastic scintillator detector, moderated indium foil detector, and moderated and bare TLDs) that are commonly used for neutron dosimetry at the Stanford Linear Accelerator Center (SLAC). 36 refs,. 19 figs.

Liu, J.C.; Jenkins, T.M.; McCall, R.C.; Ipe, N.E.

1991-10-01T23:59:59.000Z

196

SLAC National Accelerator Laboratory Technologies ...  

support U.S. competitiveness in the global market place; ... Innovative techniques for large-scale data collection, theory, analysis, ... Energy ...

197

SLAC National Accelerator Laboratory - Facilities  

NLE Websites -- All DOE Office Websites (Extended Search)

X-ray source, allowing researchers to freeze the motions of atoms and molecules and string those images together to make stop-motion movies. LCLS Overview LCLS SSRL -...

198

SLAC National Accelerator Laboratory - Accommodations  

NLE Websites -- All DOE Office Websites (Extended Search)

4.3 14 Super 8 3200 El Camino Real, Palo Alto 650-493-9085 4.7 15 Hotel California 2431 Ash St., Palo Alto 650-322-7666 5.0 16 Coronet Motel 2455 El Camino Real, Palo Alto...

199

Latest Results in SLAC 75-MW PPM Klystrons  

Science Conference Proceedings (OSTI)

75 MW X-band klystrons utilizing Periodic Permanent Magnet (PPM) focusing have been undergoing design, fabrication and testing at the Stanford Linear Accelerator Center (SLAC) for almost nine years. The klystron development has been geared toward realizing the necessary components for the construction of the Next Linear Collider (NLC). The PPM devices built to date which fit this class of operation consist of a variety of 50 MW and 75 MW devices constructed by SLAC, KEK (Tsukuba, Japan) and industry. All these tubes follow from the successful SLAC design of a 50 MW PPM klystron in 1996. In 2004 the latest two klystrons were constructed and tested with preliminary results reported at EPAC2004. The first of these two devices was tested to the full NLC specifications of 75 MW, 1.6 microseconds pulse length, and 120 Hz. This 14.4 kW average power operation came with a tube efficiency >50%. The most recent testing of these last two devices will be presented here. Design and manufacturing issues of the latest klystron, due to be tested by the Fall of 2005, are also discussed.

Sprehn, D.; Caryotakis, G.; Haase, A.; Jongewaard, E.; Laurent, L.; Pearson, C.; Phillips, R.; /SLAC

2006-03-06T23:59:59.000Z

200

SLAC Research Library  

NLE Websites -- All DOE Office Websites (Extended Search)

New Resources New SLAC Publications LSST Sensors: How will Dark Energy be Constrained ...(Rasmussen, Andrew) ILC Higgs White Paper(Barklow, Timothy) Upper Bound on the First Star...

Note: This page contains sample records for the topic "accelerator center slac" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


201

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

Office of Science (SC) Website

Home Home SLAC Site Office (SSO) SSO Home About Current Projects Contract Management Environment, Safety and Health (ES&H) Contact Information SLAC Site Office U.S. Department of Energy Bldg 41, M/S 08A 2575 Sand Hill Road Menlo Park, CA 94025 P: (650) 926-2505 SLAC Site Office Pictured Right: Stanford Synchrotron Radiation Lightsource Facility SLAC National Accelerator Laboratory 1 of 2 Print Text Size: A A A RSS Feeds FeedbackShare Page The SLAC Site Office (SSO) is an organization within the U.S. Department of Energy's Office of Science with responsibility to oversee and manage the Management and Operating (M&O) contract for the SLAC National Accelerator Laboratory (SLAC) in Menlo Park, California. SLAC is one of ten Office of Science Laboratories and is a multi-program

202

Stability review of SLAC's L-band sheet beam klystron  

Science Conference Proceedings (OSTI)

A review of L-band sheet beam development at SLAC National Accelerator Laboratory's Klystron Department. The measured current density profile of a 40:1 elliptical beam is presented. A review of instabilities discovered while simulating the klystron are ...

A. Jensen; C. Adolphsen; K. Bane; A. Burke; A. Haase; E. Jongewaard; Z. Li; D. Martin; D. Sprehn; G. Stupakov

2011-02-01T23:59:59.000Z

203

FERMI&Elettra Accelerator Technical Optimization Final Report  

E-Print Network (OSTI)

picosecond electron bunches, SLAC-PUB-11829, 2006. [11] K.Accelerator Physics Conference, Monterey, CA, 1998 (SLAC,1998) SLAC-R-580, p. 137. [12] P. Craievich, T. Weiland, I.

2006-01-01T23:59:59.000Z

204

SLAC Linac RF Performance for LCLS *  

E-Print Network (OSTI)

The Linac Coherent Light Source (LCLS) project at SLAC uses a dense 15 GeV electron beam passing through a long undulator to generate extremely bright x-rays at 1.5 angstroms. The project requires electron bunches with a nominal peak current of 3.5kA and bunch lengths of 0.020mm (70fs). The bunch compression techniques used to achieve the high brightness impose challenging tolerances on the accelerator RF phase and amplitude. The results of measurements on the existing SLAC linac RF phase and amplitude stability are summarised and improvements needed to meet the LCLS tolerances are discussed. 1 LCLS RF REQUIREMENTS LCLS requires the SLAC linac to perform with tolerances on RF phase and amplitude stability which are beyond all previous requirements. The LCLS is divided into four linacs L0, L1, L2, and L3 [1]. The phase and amplitude tolerances for the four linacs operated at S-

unknown authors

2000-01-01T23:59:59.000Z

205

Secretary Chu to Join Representatives Lofgren and Honda at the SLAC  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Representatives Lofgren and Honda at the SLAC Representatives Lofgren and Honda at the SLAC National Accelerator Laboratory Secretary Chu to Join Representatives Lofgren and Honda at the SLAC National Accelerator Laboratory August 13, 2010 - 12:00am Addthis Washington, D.C. - On Monday, U.S. Energy Secretary Steven Chu will visit the SLAC National Accelerator Laboratory in Menlo Park, California. Secretary Chu will join Representatives Zoe Lofgren and Mike Honda and Stanford University President John Hennessy at a dedication ceremony for the Linac Coherent Light Source (LCLS). The Recovery Act-funded LCLS produces x-ray pulses millions of times brighter than the world's most powerful synchrotron sources, capable of capturing images of atoms and molecules in motion. The LCLS is led by SLAC National Accelerator Laboratory (SLAC). Operated by

206

Categorical Exclusion Determinations: SLAC Site Office | Department...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

SLAC Site Office Categorical Exclusion Determinations: SLAC Site Office Categorical Exclusion Determinations issued by SLAC Site Office. DOCUMENTS AVAILABLE FOR DOWNLOAD May 2,...

207

SLAC Linac Coherent Light Source User Site  

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Accommodations / Hours / Maps Accommodations / Hours / Maps Stanford Guest House This comfortable and convenient housing structure is located on SLAC's campus. Guests have access to in-room, high-speed Internet access, a fitness center, a 24-hour reception desk, laundry facilities, free parking, complimentary tea and coffee, and a 24-hour gift shop. The Guest House offers single as well as shared rooms, but all rooms have their own bathroom, and at very reasonable rates. All rooms are non-smoking only. Please reserve accommodations using their on-line form. If the Guest House is not available, additional accommodations may be made at local hotels/motels. For longer term visits, please contact the User Research Administration office. Gate Hours Maps & Directions SLAC Maps Directions to SLAC Security Gate 17

208

Photo of the Week: Lego Rendition of SLAC National Laboratory's Linear  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Lego Rendition of SLAC National Laboratory's Lego Rendition of SLAC National Laboratory's Linear Particle Accelerator Photo of the Week: Lego Rendition of SLAC National Laboratory's Linear Particle Accelerator February 4, 2013 - 10:26am Addthis At two miles long, SLAC's linear particle accelerator is a monster of a machine. But now, thanks to an old collection of Legos and some creative work by SLAC graphic designer Greg Stewart, the two-mile accelerator has been drastically reduced in size. After happening upon his Legos at home one night, Stewart decided to spend his evening designing, building and photographing this Lego diorama homage to the inside of the SLAC linac, a place that's 20 feet underground and not often seen by anyone besides the accelerator engineers who work there. SLAC's safety officers will even be pleased to see the Lego workers wearing their "PPE" (personal protective equipment, in this case helmets). See an actual photo of the SLAC linac. | Photo courtesy of Greg Stewart, SLAC National Accelerator Laboratory.

209

LINX Test Facility at SLAC  

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LINX LINear collider X-ing Linear Collider Interaction Region Engineering Test Facility at SLAC The NLC collaboration is proposing to create the LINX test facility at SLAC to...

210

SLAC-PUB-8640  

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8640 8640 September 2000 The Discovery of the Point-Like Structure of Matter Professor R.E. Taylor Stanford Linear Accelerator Center, Stanford University, Stanford, CA 94309 Invited talk presented at the Discussion Meeting on the Quark Structure of Matter, Royal Society of London, England, May 24 - 25, 2000 Work supported by the Department of Energy contract DE-AC03-76SF00515 "The Discovery of the Point-Like Structure of Matter" 1 presented by Professor R.E. Taylor on May 24, 2000 The Royal Society Discussion Meeting - The Quark Structure of Matter The organizers of this workshop have invited me here to reminisce. The assigned subject

211

Archives and History Office: SLAC Staff and Faculty Memorials and Tributes  

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Short Features > SLAC Staff and Faculty Memorials and Tributes Short Features > SLAC Staff and Faculty Memorials and Tributes SLAC Staff and Faculty Memorials and Tributes Hugh Steckol memorial magnolia -- since replaced (Halbo-4) Panofsky Grove stone and marker (Halbo-1) Joe Ballam memorial tree (Halbo-12) Throughout its history, the staff, faculty and site office personnel at the SLAC National Accelerator Laboratory have chosen to honor co-workers with a variety of lasting tributes and memorials. In some instances, former staff or their families have presented one of these landscaping tributes to SLAC. The list below provides the names of those who have given or received tributes or memorials, and the accompanying pdf map shows the tribute or memorial locations on the SLAC site. The SLAC Archives and History Office is indebted to Finn Halbo, who compiled all of the information on memorials and tributes made from 1962 through 2000.

212

SLAC National Accelerator Laboratory: SLAC Science Focus Area...  

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Clark, S D. Conradson, and J.R. Bargar (2008) Structure of biogenic UO2 produced by Shewanella Oneidensis, strain MR-1. Environ. Sci. Technol., 42, 7898-7904. K.-U. Ulrich, D....

213

SLAC National Accelerator Laboratory - SLAC Scientists Make Detailed...  

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Make Detailed Map of Current Between Insulators By Glennda Chui September 12, 2013 When scientists found electrical current flowing where it shouldn't be - at the place where two...

214

SLAC National Accelerator Laboratory - IBM/SLAC Team Controls...  

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IBMSLAC Team Controls Switching Behavior of Promising Electronic Material By Mike Ross October 21, 2013 Working with a metal oxide that shows promise for future generations of...

215

at SLAC National Accelerator Laboratory SLAC's Foreign Visits  

E-Print Network (OSTI)

. Context A New Direction Threats Policies C&A Going Forward What Can you do? Outline #12;Page 3's Cyberspace Policy Review ­ Executive Branch Cybersecurity Coordinator - Howard Schmidt Work closely with all awareness 6. Develop and implement a government-wide cyber counterintelligence (CI) plan 7. Increase

Wechsler, Risa H.

216

SLAC National Accelerator Laboratory - SLAC X-rays Resurrect...  

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hair. Slowly the scientists scanned the document line by line, moving left to right and right to left as the beam worked its way down the page. Each side of the page took about...

217

SLAC National Accelerator Laboratory - Stanford-SLAC Team Uses...  

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it, wash away the electrolyte and then analyze it with X-ray diffraction or an electron microscope. But when you do that, you also wash away all of the polysulfides that...

218

SLAC National Accelerator Laboratory - SLAC at 50: Honoring the...  

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Institute of Technology physicists used the electron beam to discover that protons in the atomic nucleus were composed of smaller entities called quarks. That research led to the...

219

SLAC National Accelerator Laboratory - SLAC X-rays Help Discover...  

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which pulses 120 times a second. In the instant before the intense X-rays destroy a nanocrystal, detectors record a flash of X-ray diffraction information. Finally, scientists use...

220

SLAC National Accelerator Laboratory: SLAC Science Focus Area...  

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settings. Dan Giammar Dan Giammar (PI) Dan is an Assistant Professor in the Department Energy, Environmental, and Chemical Engineering at Washington University in St. Louis,...

Note: This page contains sample records for the topic "accelerator center slac" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
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221

SLAC National Accelerator Laboratory - SLAC Theorist Helps Sharpen...  

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Brodsky and his colleagues - Matin Mojaza of CP3-Origins at the University of Southern Denmark and Xing-Gang Wu of Chongqing University in China - have presented a method that will...

222

SLAC National Accelerator Laboratory: SLAC Science Focus Area...  

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nuclear waste repositories. The need to understand the biogeochemical factors controlling Pu mobility in the environment is driven not only by regulatory requirements, but also by...

223

SLAC National Accelerator Laboratory: SLAC Science Focus Area...  

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program. The inner portion of the particles is well ordered and similar to stoichiometric or near-stoichiometric UO2.0, and the material consequently exhibits a solubility...

224

FACET: The New User Facility at SLAC  

Science Conference Proceedings (OSTI)

FACET (Facility for Advanced Accelerator and Experimental Tests) is a new User Facility at SLAC National Accelerator Laboratory. Its high power electron and positron beams make it a unique facility, ideal for beam-driven Plasma Wakefield Acceleration studies. The first 2 km of the SLAC linac produce 23 GeV, 3.2 nC electron and positron beams with short bunch lengths of 20 {mu}m. A final focusing system can produce beam spots 10 {mu}m wide. User-aided Commissioning took place in summer 2011 and FACET will formally come online in early 2012. We present the User Facility, the current features, planned upgrades and the opportunities for further experiments. Accelerators are our primary tool for discovering the fundamental laws to the universe. Each new frontier we probe requires a new, more powerful method. Accelerators are therefore increasing in size and cost. The future of this field requires new accelerating techniques that can reach the high energies required over shorter distances. New concepts for high gradient acceleration include utilizing the wakes in plasma and dielectric and metallic structures. FACET was built to provide a test bed for novel accelerating concepts with its high charge and highly compressed beams. As a test facility unlike any other, it has also attracted groups interested in beam diagnostic techniques and terahertz studies. The first phase of the construction was completed in May 2011. Beam commissioning began in June and was interleaved with the installation of five experiments. Users were invited to aid with the commissioning for the month of August during which time experimental hardware and software were checked out and some first measurements were taken. FACET is currently in the process of becoming a Department of Energy User Facility for High Energy Physics.

Clarke, C.I.; Decker, F.J.; Erikson, R.; Hast, C.; Hogan, M.J.; Iverson, R.; Li, S.Z.; Nosochkov, Y.; Phinney, N.; Sheppard, J.; Wienands, U.; Woodley, M.; Yocky, G.; /SLAC; Seryi, A.; /Oxford U., JAI; Wittmer, W.; /Michigan State U.

2011-12-13T23:59:59.000Z

225

SLAC-PUB-2446  

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2446 2446 December 1979 (T/E) THE TAU LEPTON" Martin L. Per1 Stanford Linear Accelerator Center Stanford University, Stanford, California 94305 U.S.A. Submitted to Annual Review of Nuclear and Particle Science * Work supported by the Department of Energy, contract DE-AC03-76SF00515. TAU LEPTON TABLE OF CONTENTS -2- -1. SI INTRODUCTION 1.1 The Definition of a Lepton 1.2 The Tau Lepton 2. THEORETICAL FRAMEWORK 2.1 2.2 2.3 2.4 Weak Interactions and Lepton Conservation Simple Models for New Charged Leptons 2.2.1 SEQUENTIAL LEPTON MODEL 2.2.2 ORTHOLEPTON MODEL 2.2.3 PARALEPTON MODEL e-p- T Universality Leptons and Quarks 3. THE IDENTIFICATION OF THE TAU AS A LEPTON 3.1 Decay Process Signatures 3.2 e+e- Production Process Signatures 3.2.1 THEORY 3.2.2 EXPERIMENTAL RESULTS BELOW 8 GeV

226

(Stanford Linear Accelerator Center) annual environmental monitoring report, January--December 1989  

SciTech Connect

This progress report discusses environmental monitoring activities at the Stanford Linear Accelerator Center for 1989. Topics include climate, site geology, site water usage, land use, demography, unusual events or releases, radioactive and nonradioactive releases, compliance summary, environmental nonradiological program information, environmental radiological program information, groundwater protection monitoring ad quality assurance. 5 figs., 7 tabs. (KJD)

Not Available

1990-05-01T23:59:59.000Z

227

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

Science Conference Proceedings (OSTI)

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

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

2007-01-01T23:59:59.000Z

228

Intensity Effects of the FACET Beam in the SLAC Linac  

SciTech Connect

The beam for FACET (Facility for Advanced aCcelerator Experimental Tests) at SLAC requires an energy-time correlation ('chirp') along the linac, so it can be compressed in two chicanes, one at the midpoint in sector 10 and one W-shaped chicane just before the FACET experimental area. The induced correlation has the opposite sign to the typical used for BNS damping, and therefore any orbit variations away from the center kick the tail of the beam more than the head, causing a shear in the beam and emittance growth. Any dispersion created along the linac has similar effects due to the high (>1.2% rms) energy spread necessary for compression. The initial huge emittances could be reduced by a factor of 10, but were still bigger than expected by a factor of 2-3. Normalized emittance of 3 {micro}m-rad in Sector 2 blew up to 150 {micro}m-rad in Sector 11 but could be reduced to about 6-12 {micro}m-rad, for the vertical plane although the results were not very stable. Investigating possible root causes for this, we found locations where up to 10 mm dispersion was created along the linac, which were finally verified with strong steering and up to 7 mm settling of the linac accelerator at these locations.

Decker, F.-J.; Lipkowitz, N.; Sheppard, J.; White, G.R.; Wienands, U.; Woodley, M.; Yocky, G.; /SLAC

2012-07-03T23:59:59.000Z

229

Linear Collider Collaboration Tech Notes LCC-0073 SLAC-PUB-9004  

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3 3 SLAC-PUB-9004 September 2001 Microwave Quadrupoles for Beam Break-up Supression In the NLC Main Linac K.L.F. Bane and G. Stupakov Stanford Linear Accelerator Center Stanford, CA Abstract: This is a preliminary study of the effect of using microwave quads (MQs) instead of rf phase shifting to induce BNS damping in the main linac of the NLC collider. We consider MQs running at X-band, and find that the total length of MQs needed for the NLC is 6% of the total length of the accelerating structures. We show through simulations that, by using MQs instead of phase shifting for BNS damping, the quad alignment tolerances can be relaxed but at the expense of shifting the tight tolerances to the MQs; this can be advantageous if the MQs can be better aligned

230

Electron acceleration & laser pulse compression using a laser...  

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acceleration & laser pulse compression using a laser-plasma accelerator Wednesday, August 14, 2013 - 3:00pm SLAC, Redtail Hawk Conference Room 108A Andreas Walker, Oxford...

231

Acceleration  

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Acceleration Acceleration of porous media simulations on the Cray XE6 platform Kirsten M. Fagnan, Michael Lijewski, George Pau, Nicholas J. Wright Lawrence Berkeley National Laboratory 1 Cyclotron Road Berkeley, CA 94720 May 18, 2011 1 Introduction In this paper we investigate the performance of the Porous Media with Adaptive Mesh Refinment (PMAMR) code which was developed in the Center for Computational Science and Engineering at Lawrence Berkeley National Laboratory. This code is being used to model carbon sequestration and contaminant transport as part of the Advanced Simulation Capability for Environmental Management (ASCEM) project. The goal of the ASCEM project is to better understand and quantify flow and contaminant transport behavior in complex geological systems. It will also address the long-term performance of engineered components including cementitious materials in

232

SLAC National Accelerator Laboratory - Magnetism Combines with...  

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around a black hole, including the magnetic force, makes a black hole even better at blasting its surroundings clear than currently thought. "Based on our study we're saying there...

233

SLAC National Accelerator Laboratory - ALD Searches  

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will consider the following characteristics when evaluating candidates: Leadership skills and previous experience in similar role Strategic planning capabilities Understanding...

234

SLAC National Accelerator Laboratory - Stefan Mannsfeld Wins...  

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his professor and colleagues with his physics insights and creative experimental skills that have led to a series of important insights into the properties of thin-film...

235

SLAC National Accelerator Laboratory - Research Resources  

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Office of High Energy Physics (HEP) Office of Science Basic Energy Sciences High Energy Physics Other Phone Directories SLACspeak Glossary SPIRES HEP Preprints Database...

236

SLAC National Accelerator Laboratory - Bringing Telescope Tech...  

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Telescope Tech to X-ray Lasers By Glenn Roberts Jr July 10, 2012 Technology that helps ground-based telescopes cut through the haze of Earth's atmosphere to get a clearer view of...

237

SLAC National Accelerator Laboratory - Journal's Special Issue...  

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Journal's Special Issue Highlights New Frontier of X-ray Lasers By Glenn Roberts Jr. September 9, 2013 A special issue of a physics publication highlights the contributions of...

238

SLAC National Accelerator Laboratory - World's Largest Digital...  

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on LSST's 8.4-meter primary mirror and its final site atop Cerro Pachn in northern Chile. As the primary component of all energy in the universe, the still-mysterious dark...

239

SLAC National Accelerator Laboratory - KIPAC Theorists Weigh...  

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their search. By Lori Ann White May 21, 2013 Now that it looks like the hunt for the Higgs boson is over, particles of dark matter are at the top of the physics "Most Wanted" list....

240

SLAC National Accelerator Laboratory - CERN: Experiments Observe...  

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CERN: Experiments Observe Particle Consistent with Long-sought Higgs Boson July 5, 2012 from CERN At a seminar held at CERN as a curtain raiser to the year's major particle physics...

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241

SLAC National Accelerator Laboratory - American Physical Society...  

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said. But Friend also characterizes him as "a wonderful colleague." Recalling a recent power outage, she said Hwang stepped right in: "He did a great job. He's willing to help...

242

SLAC National Accelerator Laboratory - SSRL Researchers Show...  

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used a specialized instrument at the SSRL to determine the electronic and geometric structure of each intermediate stage. Chemical tests at Ewha Womans University further...

243

SLAC National Accelerator Laboratory - Bienenstock, Michelson...  

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and Technologies section. Among the academy's other new members this year: Ernest Moniz, nominee for secretary of the U.S. Department of Energy. Former pilot, astronaut and...

244

SLAC National Accelerator Laboratory - Novel Analysis Method...  

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of objects that can be found at widely varying distances - for example, blazars or gamma-ray bursts. SHARE Artist's conception of a quasar (Credit: NASAJPL-Caltech.) The...

245

SLAC National Accelerator Laboratory - Postdoc Eric Verploegen...  

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to help clean up the processes used to extract oil from tar sands and natural gas from shale. Verploegen is not sure if there will be many synchrotrons in his future, but he...

246

SLAC National Accelerator Laboratory - Transparent Batteries...  

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Transparent Batteries: Seeing Straight Through to the Future? By Stanford News Service July 25, 2011 It sounds like something out of a cheesy science fiction movie, but thanks to...

247

SLAC National Accelerator Laboratory - New Nanostructure for...  

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New Nanostructure for Batteries Keeps Going and Going ... By Mike Ross May 10, 2012 For more than a decade, scientists have tried to improve lithium-based batteries by replacing...

248

SLAC National Accelerator Laboratory - Infrastructure and Safety  

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Infrastructure and Safety Photo - Aerial view of the klystron gallery. The Infrastructure and Safety directorate is committed to creating, operating and sustaining world-class,...

249

SLAC National Accelerator Laboratory - Meeting Rooms  

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41 144D 3117 30-C Blue Room (20) 41 207 2868 30-C Castle Craigs Conference Room 280B 241 2804 29-D Cedar Room (15) 48 101 3485 30-B CEF Conference Room 35 4A 3534 27-E Controls...

250

SLAC National Accelerator Laboratory - Molecular Graphene Heralds...  

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Press Release Archive Molecular Graphene Heralds New Era of 'Designer Electrons' March 14, 2012 Menlo Park, Calif. - Researchers from Stanford University and the U.S. Department of...

251

SLAC National Accelerator Laboratory - Designing Chemical Catalysts...  

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Designing Chemical Catalysts: There's an App for That By Mike Ross January 19, 2012 A big reason for publishing scientific results is to inform others who can then use your data...

252

SLAC National Accelerator Laboratory - World's Most Powerful...  

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into an even more precise tool for exploring the nanoworld. The improvements yield laser pulses focused to higher intensity in a much narrower band of X-ray wavelengths, and...

253

SLAC National Accelerator Laboratory - Laser Mashup: Researchers...  

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have provided a wealth of information on atoms, molecules and materials. But even when laser research was in its infancy more than 40 years ago, scientists pondered the potential...

254

SLAC National Accelerator Laboratory - KIPAC Researchers Track...  

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little evidence of being the result of a merger, but its spectrum showed some of the right characteristics. A promising test case, but more checking was necessary because...

255

SLAC National Accelerator Laboratory - Claudio Pellegrini: A...  

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fateful workshop in 1992 where Pellegrini first proposed the LCLS. His account is a laundry list of contributions made by a phone book's worth of collaborators, from a vital...

256

SLAC National Accelerator Laboratory - symmetry magazine  

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Symmetry is a magazine about particle physics and its connections to other aspects of life and science, from interdisciplinary collaborations to policy to culture. It is...

257

SLAC National Accelerator Laboratory - Designer Glue Improves...  

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Designer Glue Improves Lithium-ion Battery Life By Mike Ross August 19, 2013 When it comes to improving the performance of lithium-ion batteries, no part should be overlooked - not...

258

SLAC National Accelerator Laboratory - Innovative SIMES Solar...  

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Innovative SIMES Solar-Energy Technology Funded by DOE By Mike Ross July 18, 2012 The U.S. Department of Energy has awarded a research group at the Stanford Institute for Materials...

259

SLAC National Accelerator Laboratory - Synchrotrons Explore Water...  

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fluoride crystal. This surface was expected to stimulate ice formation, but even when chilled to a temperature of about 6.5 degrees Fahrenheit - well below water's normal...

260

SLAC National Accelerator Laboratory - Forces Within Molecules...  

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diamondoids, which are molecule-sized diamonds pioneered by SIMES researchers. Ethane, propane and octane are familiar alkanes that have backbones of two, three and eight carbon...

Note: This page contains sample records for the topic "accelerator center slac" from the National Library of EnergyBeta (NLEBeta).
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We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


261

SLAC National Accelerator Laboratory - Shedding Light  

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of particles on a collision course. Richter and his colleagues stood by to examine the debris to see what discoveries came out. Physicists were already familiar with one product of...

262

SLAC National Accelerator Laboratory - Researchers Converge to...  

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October 25, 2011 One of the most striking features of particle collisions is the jet: a spray of particles, or energy - or both - produced when hadrons, the quark-containing...

263

SLAC National Accelerator Laboratory - Underground Search for...  

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is a thin-walled cylinder made of extremely pure copper. It is full of about 200 kilograms (about 440 pounds) of liquid xenon and buried 2,150 feet deep at the DOE's Waste...

264

SLAC National Accelerator Laboratory - SIMES Professor Honored...  

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theoretical research that has provided significant insights into the nature of "unconventional" superconductors. The prize is named for the distinguished physicist John Bardeen...

265

SLAC National Accelerator Laboratory - Experiments Probe Megavirus...  

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reproduce apart from a living cell. But their size, genetic complexity and other unconventional viral characteristics raise questions about whether they should be considered...

266

SLAC National Accelerator Laboratory - Breakthrough Research...  

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Society in Germany; Stockholm University in Sweden; and the Technical University of Denmark. This work was supported by DOE's Office of Science, the Swedish National Research...

267

SLAC National Accelerator Laboratory - SUNCAT Director Awarded...  

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Gold Medal for engineering scientific research from the Technical University of Denmark (DTU). The presentation was made on May 3 at an annual university celebration...

268

SLAC National Accelerator Laboratory - Researchers Freely Share...  

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Researchers Freely Share LCLS Experiment Data on Public Database By Helen Shen November 22, 2011 In 2009, when biophysicist Ilme Schlichting and her colleagues applied to use the...

269

SLAC National Accelerator Laboratory - Ribosome Research Takes...  

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Source X-ray laser for the first time. The ultrashort, ultrabright X-ray pulses at LCLS can be used to explore the structure and other properties of crystallized samples in...

270

SLAC National Accelerator Laboratory - For Superionic Material...  

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for the liquid electrolyte that transports ions between the electrodes of a rechargeable battery. The researchers conducted their experiments at three synchrotrons: Lawrence...

271

SLAC National Accelerator Laboratory - SIMES Materials Scientist...  

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ionics are improving many energy storage and conversion devices, such as batteries, fuel cells, capacitors, solar cells and chemical sensors. Compared with liquid-based...

272

SLAC National Accelerator Laboratory - 2012 News Features  

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Higgs July 5, 2012 CERN: Experiments Observe Particle Consistent with Long-sought Higgs Boson June 20, 2012 LCLS Finding May Lead to Better Models of Matter Under Extreme...

273

SLAC National Accelerator Laboratory - 2011 News Archive  

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August 11, 2011 Stefan Mannsfeld Wins Spicer Award August 9, 2011 Will the Real Higgs Boson Please Stand Up? August 3, 2011 Tools of the Trade: New X-ray Microscopy Technique...

274

SLAC National Accelerator Laboratory - Shoucheng Zhang, Stanford...  

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SIMES, for innovations in technology that advanced the understanding of high-temperature superconductors - materials that conduct electricity with 100 percent efficiency - and...

275

SLAC National Accelerator Laboratory - Staff Resources - Classic...  

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Resources page. Organization Safety Central Services Site Operations Policies and Procedures Badges and Site Visitors Professional Development and Training Computing Internal...

276

SLAC National Accelerator Laboratory - Printing Innovations Provide...  

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semiconductors. The neatly aligned blue strips are what provide greater electric charge mobility. The Stanford logo shown here is the same size as a dime. (Credit: Y. Diao, B....

277

SLAC National Accelerator Laboratory - XLDB-2013  

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and often must be able to change to accommodate rapidly changing needs. Google and Facebook, for example, use open source databases so they can take advantage of enhancements...

278

SLAC National Accelerator Laboratory - Power Plants: Scientists...  

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Power Plants: Scientists Use X-ray Laser to Probe Engines of Photosynthesis By Glenn Roberts Jr. June 6, 2012 The molecular power plants that carry out photosynthesis are at the...

279

SLAC National Accelerator Laboratory - Materials, Chemistry and...  

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Materials, Chemistry and Energy Sciences Two people holding a solar cell outdoors Materials, chemistry and energy sciences are central to many of today's most critical technical...

280

SLAC Library - Online Particle Physics Information  

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May 2002 May 2002 This list describes a broad set of online resources that are of value to the particle physics community. It is prescreened and highly selective. It describes the scope, size, and organization of the resources so that efficient choices can be made amongst many sites which may appear similar. A resource is excluded if it provides information primarily of interest to only one institution. Databases and resources focusing primarily on accelerator physics have been excluded in deference to the excellent compilation at the World Wide Web Virtual Library of Beam Physics and Accelerator Technology. My thanks to Betty Armstrong, Particle Data Group, the SLAC Library staff, and the many particle physics Web site and database maintainers who have all given me their generous assistance. Please send comments and

Note: This page contains sample records for the topic "accelerator center slac" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


281

Preliminary results of the echo-seeding experiment at SLAC  

E-Print Network (OSTI)

experiment at NLCTA, SLAC LDRD programme, http://EEHG experiment (ECHO-7) at SLAC has gone from the designgeneration experiment at SLAC, These proceedings, [9] J.H.

Xiang, D.

2010-01-01T23:59:59.000Z

282

SSRL in SLAC Today | Stanford Synchrotron Radiation Lightsource  

NLE Websites -- All DOE Office Websites (Extended Search)

in SLAC Today Subscribe to SSRL in SLAC Today feed URL: https:news.slac.stanford.edutagsprograms-facilitieslightsourcesstanford-synchrotron-radiation-lightsource-ssrl...

283

2013 Annual Planning Summary for the SLAC Site Office | Department...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

SLAC Site Office 2013 Annual Planning Summary for the SLAC Site Office 2013 Annual Planning Summary for the SLAC Site Office The ongoing and projected Environmental Assessments and...

284

The Dust Accelerator Facility of the Colorado Center for Lunar Dust and Atmospheric Studies  

Science Conference Proceedings (OSTI)

The NASA Lunar Institute's Colorado Center for Lunar Dust and Atmospheric Studies has recently completed the construction of a new experimental facility to study hypervelocity dust impacts. The installation includes a 3 MV Pelletron, accelerating small particles in the size range of 0.1 to few microns to velocities in the range of 1 to 100 km/s. Here we report the capabilities of our facility, and the results of our first experiments.

Horanyi, M.; Colette, A.; Drake, K.; Gruen, E.; Kempf, S.; Munsat, T.; Robertson, S.; Shu, A.; Sternovsky, Z.; Wang, X. [NASA Lunar Science Institute Colorado Center for Lunar Dust and Atmospheric Studies University of Colorado, Boulder, CO, 80309 (United States)

2011-11-29T23:59:59.000Z

285

Flat-Plate Photovoltaic Performance Testing at the Solar Technology Acceleration Center (SolarTAC)  

Science Conference Proceedings (OSTI)

The flat-plate photovoltaic (PV) performance testing project at the Solar Technology Acceleration Center (SolarTAC) is a multi-year, data-driven effort to provide unbiased field testing of a variety of commercial-scale solar PV systems under different environmental and seasonal conditions. Its core aim is to assess and characterize the operation of both well-established as well as less mature PV module technologies to ultimately inform future PV product investment decisions by electric utilities and ...

2013-10-30T23:59:59.000Z

286

SLAC Snapshot | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

SLAC Snapshot SLAC Snapshot SLAC Snapshot February 3, 2011 - 5:02pm Addthis The LCLS Atomic, Molecular and Optical instrument hutch where experiments were performed | Photo courtesy of Brad Plummer The LCLS Atomic, Molecular and Optical instrument hutch where experiments were performed | Photo courtesy of Brad Plummer Charles Rousseaux Charles Rousseaux Senior Writer, Office of Science "Say cheese!" Millions of Americans are likely to be saying that this weekend, and not just those cheering on the Packers this weekend (take them by three). After all, Super Bowl parties are a great place to take pictures, especially if your team happens to be winning. But it's tough to take great pictures of a crowd that's constantly moving. It's even harder if you've got extra-hyper toddlers or extra-squirmy pets. So rather than

287

Accelerators  

NLE Websites -- All DOE Office Websites (Extended Search)

Accelerators Elementary Particles Detectors Accelerators Visit World Labs For Children - for younger people For Children The Electric Force For Children Electric Force Fields For...

288

C:\\NLC\\FermiLab2000\\Publication\\PostSLAC\\slac-pub-8725.DVI  

NLE Websites -- All DOE Office Websites (Extended Search)

4 0101 Test Beams and Polarized Fixed Target Beams at the NLC January 2001 Lewis Keller, Rainer Pitthan, Sayed Rokni and Kathleen A. Thompson Stanford Linear Accelerator Center...

289

slac_nums  

NLE Websites -- All DOE Office Websites (Extended Search)

25 29-E Main Control Center (MCC) 5 32-F Main Gate (Information Booth) 83 31-B Master Substation 16 30-F Medical (room 11) 28 30-E Metal Stores Shelter 29 29-F Operations...

290

SLAC Linac Coherent Light Source User Site  

NLE Websites -- All DOE Office Websites (Extended Search)

Schedules Machine Status Machine FAQ Safety Organization Committees and Contacts Organization Structure Collaborators Directories LCLS Directory SLAC Directory Stanford...

291

Resonant Kicker System Development at SLAC  

DOE Green Energy (OSTI)

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

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

2009-04-27T23:59:59.000Z

292

3 MV hypervelocity dust accelerator at the Colorado Center for Lunar Dust and Atmospheric Studies  

Science Conference Proceedings (OSTI)

A hypervelocity dust accelerator for studying micrometeorite impacts has been constructed at the Colorado Center for Lunar Dust and Atmospheric Studies (CCLDAS) at the University of Colorado. Based on the Max-Planck-Instituet fuer Kernphysik (MPI-K) accelerator, this accelerator is capable of emitting single particles of a specific mass and velocity selected by the user. The accelerator consists of a 3 MV Pelletron generator with a dust source, four image charge pickup detectors, and two interchangeable target chambers: a large high-vacuum test bed and an ultra-high vacuum impact study chamber. The large test bed is a 1.2 m diameter, 1.5 m long cylindrical vacuum chamber capable of pressures as low as 10{sup -7} torr while the ultra-high vacuum chamber is a 0.75 m diameter, 1.1 m long chamber capable of pressures as low as 10{sup -10} torr. Using iron dust of up to 2 microns in diameter, final velocities have been measured up to 52 km/s. The spread of the dust particles and the effect of electrostatic focusing have been measured using a long exposure CCD and a quartz target. Furthermore, a new technique of particle selection is being developed using real time digital filtering techniques. Signals are digitized and then cross-correlated with a shaped filter, resulting in a suppressed noise floor. Improvements over the MPI-K design, which include a higher operating voltage and digital filtering for detection, increase the available parameter space of dust emitted by the accelerator. The CCLDAS dust facility is a user facility open to the scientific community to assist with instrument calibrations and experiments.

Shu, Anthony; Horanyi, Mihaly; Kempf, Sascha; Thomas, Evan [Colorado Center for Lunar Dust and Atmospheric Studies, Boulder, Colorado 80303 (United States); Department of Physics, University of Colorado, Boulder, Colorado 80309 (United States); Laboratory for Atmospheric and Space Physics, 1234 Innovation Drive, Boulder, Colorado 80303 (United States); Collette, Andrew; Drake, Keith; Northway, Paige [Colorado Center for Lunar Dust and Atmospheric Studies, Boulder, Colorado 80303 (United States); Laboratory for Atmospheric and Space Physics, 1234 Innovation Drive, Boulder, Colorado 80303 (United States); Gruen, Eberhard [Colorado Center for Lunar Dust and Atmospheric Studies, Boulder, Colorado 80303 (United States); MPI fuer Kernphysik, Saupfercheckweg 1, D-69117 Heidelberg (Germany); Mocker, Anna [Colorado Center for Lunar Dust and Atmospheric Studies, Boulder, Colorado 80303 (United States); MPI fuer Kernphysik, Saupfercheckweg 1, D-69117 Heidelberg (Germany); IRS, Universitaet Stuttgart, Pfaffenwaldring 31, D-70569 Stuttgart (Germany); Munsat, Tobin [Colorado Center for Lunar Dust and Atmospheric Studies, Boulder, Colorado 80303 (United States); Department of Physics, University of Colorado, Boulder, Colorado 80309 (United States); Srama, Ralf [MPI fuer Kernphysik, Saupfercheckweg 1, D-69117 Heidelberg (Germany); IRS, Universitaet Stuttgart, Pfaffenwaldring 31, D-70569 Stuttgart (Germany); and others

2012-07-15T23:59:59.000Z

293

Setup and Calibration of SLAC's Peripheral Monitoring Stations  

Science Conference Proceedings (OSTI)

The goals of this project were to troubleshoot, repair, calibrate, and establish documentation regarding SLAC's (Stanford Linear Accelerator Center's) PMS (Peripheral Monitoring Station) system. The PMS system consists of seven PMSs that continuously monitor skyshine (neutron and photon) radiation levels in SLAC's environment. Each PMS consists of a boron trifluoride (BF{sub 3}) neutron detector (model RS-P1-0802-104 or NW-G-20-12) and a Geiger Moeller (GM) gamma ray detector (model TGM N107 or LND 719) together with their respective electronics. Electronics for each detector are housed in Nuclear Instrument Modules (NIMs) and are plugged into a NIM bin in the station. All communication lines from the stations to the Main Control Center (MCC) were tested prior to troubleshooting. To test communication with MCC, a pulse generator (Systron Donner model 100C) was connected to each channel in the PMS and data at MCC was checked for consistency. If MCC displayed no data, the communication cables to MCC or the CAMAC (Computer Automated Measurement and Control) crates were in need of repair. If MCC did display data, then it was known that the communication lines were intact. All electronics from each station were brought into the lab for troubleshooting. Troubleshooting usually consisted of connecting an oscilloscope or scaler (Ortec model 871 or 775) at different points in the circuit of each detector to record simulated pulses produced by a pulse generator; the input and output pulses were compared to establish the location of any problems in the circuit. Once any problems were isolated, repairs were done accordingly. The detectors and electronics were then calibrated in the field using radioactive sources. Calibration is a process that determines the response of the detector. Detector response is defined as the ratio of the number of counts per minute interpreted by the detector to the amount of dose equivalent rate (in mrem per hour, either calculated or measured). Detector response for both detectors is dependent upon the energy of the incident radiation; this trend had to be accounted for in the calibration of the BF{sub 3} detector. Energy dependence did not have to be taken into consideration when calibrating the GM detectors since GM detector response is only dependent on radiation energy below 100 keV; SLAC only produces a spectrum of gamma radiation above 100 keV. For the GM detector, calibration consisted of bringing a {sup 137}Cs source and a NIST-calibrated RADCAL Radiation Monitor Controller (model 9010) out to the field; the absolute dose rate was determined by the RADCAL device while simultaneously irradiating the GM detector to obtain a scaler reading corresponding to counts per minute. Detector response was then calculated. Calibration of the BF{sub 3} detector was done using NIST certified neutron sources of known emission rates and energies. Five neutron sources ({sup 238}PuBe, {sup 238}PuB, {sup 238}PuF4, {sup 238}PuLi and {sup 252}Cf) with different energies were used to account for the energy dependence of the response. The actual neutron dose rate was calculated by date-correcting NIST source data and considering the direct dose rate and scattered dose rate. Once the total dose rate (sum of the direct and scattered dose rates) was known, the response vs. energy curve was plotted. The first station calibrated (PMS6) was calibrated with these five neutron sources; all subsequent stations were calibrated with one neutron source and the energy dependence was assumed to be the same.

Cooper, C.

2004-09-03T23:59:59.000Z

294

SLAC Lightsource User Access Guidelines and Agreement  

NLE Websites -- All DOE Office Websites (Extended Search)

Lightsource User Access Guidelines & Agreement Lightsource User Access Guidelines & Agreement August 3, 2011 SLAC-I-030-306-001-00-R002 1 SLAC Lightsource User Access Guidelines and Agreement LCLS / SSRL User Research Administration approval (signature/date): LCLS Safety Office approval (signature/date): SSRL Safety Office approval (signature/date): XFO Operations approval (signature/date): Revision Record Revision Date Revised Section(s) Affected Description of Change R001 October 4 th , 2010 User Form Updated SLAC Lightsource User Access Agreement Form R000 Sept 14, 2009 Original Release SLAC Lightsource User Access Guidelines & Agreement August 3, 2011 SLAC-I-030-306-001-00-R002 1 SLAC LIGHTSOURCE USER ACCESS GUIDELINES & AGREEMENT Introduction Welcome to SSRL and LCLS, SLAC's lightsource user facilities. We hope that your stay here will be

295

Strong acceleration of primary photosynthetic electron transfer in a mutated reaction center of Rhodopseudomonas viridis  

SciTech Connect

The energetics of the primary electron donor (the special pair P) in reaction centers from Rhodopseudomonas viridis were modified by site-directed mutagenesis of histidine L168 to phenylalanine. This leads to the loss of a hydrogen bond between the amino acid side chain and the ring I acetyl carbonyl oxygen of the bacteriochlorophyll molecule BChl{sub LP}. As a result of the mutation, a 35 nm blue shift of the Q{sub y} band of the special pair and a decrease of 80 mV in the P/P{sup +} oxidation-reduction potential occur. Femtosecond spectroscopy revealed an acceleration of the first electron transfer step from 3.5 ps in wild type to 1.1 ps in mutant. Analysis of change in the bacteriochlorophyll monomer (B) band of the mutant reaction centers showed strong bleaching. This is direct evidence that bacteriochlorophyll b is real intermediate in electron transfer. The changes in redox potential and time constants allow one to estimate the energetics in the wild-type and mutated reaction centers according to the Marcus electron transfer theory. 32 refs., 6 figs.

Arlt, T.; Penzkofer H.; Zinth, W. [Ludwig-Maximilians-Universitaet, Muenchen (Germany)] [Ludwig-Maximilians-Universitaet, Muenchen (Germany); Bibikova, M.; Oesterhelt, D. [Max-Planck-Institut fuer Biochemie, Martinsried (Germany)] [Max-Planck-Institut fuer Biochemie, Martinsried (Germany)

1996-07-18T23:59:59.000Z

296

Structure test results from SLAC (NLCTA) show breakdown and damage at  

NLE Websites -- All DOE Office Websites (Extended Search)

test results from SLAC (NLCTA) show breakdown and damage at test results from SLAC (NLCTA) show breakdown and damage at gradients well below expectations from single cavity tests. The papers and presentations listed here illustrate some recent work on the topic. SLAC meeting notes are found here. Overview - Basic understanding of the role of particulate contaminants (Hasan Padamsee, PAC97) Literature study - Field emission and high voltage breakdown - (presentation by D. Burke 1996) References listed in D. Burke summary: SLAC Breakdown in S-band structures (Loew and Wang 1988) High Gradient studies in structures (Loew and Wang 1990) High Gradient tests (Wang et.al. 1994) Properties of Periodic Accelerating Structures for Linear Colliders (Wang 1989) Field emission in high gradient structures - (Loew and Wang -School 1997)

297

Recent Upgrade of the Klystron Modulator at SLAC  

SciTech Connect

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

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

2011-11-04T23:59:59.000Z

298

Panel discussion on laboratory accelerator programs: present and future  

SciTech Connect

The present SLAC accelerator program is summarized briefly, and the future of electron-positron colliders is discussed. Present activities discussed include the PEP storage ring, the SPEAR storage ring, the Linear Accelerator, and the SLAC Linear Collider (SLC) project. Future prospects include a larger scale linear collider. The stability requirements on acceleration are briefly discussed. (LEW)

Richter, B.

1986-09-01T23:59:59.000Z

299

Stanford Linear Accelerator Center, Order R2-2005-0022, May 18, 2005  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

CALIFORNIA REGIONAL WATER QUALITY CONTROL BOARD CALIFORNIA REGIONAL WATER QUALITY CONTROL BOARD SAN FRANCISCO BAY REGION ORDER No. R2-2005-0022 RESCISSION of: ORDER No. 85-88, WASTE DISCHARGE REQUIREMENTS and ADOPTION of: SITE CLEANUP REQUIREMENTS for: STANFORD UNIVERSITY and the UNITED STATES DEPARTMENT OF ENERGY for the property located at the: STANFORD LINEAR ACCELERATOR CENTER 2575 SAND HILL ROAD MENLO PARK, SAN MATEO COUNTY FINDINGS: The California Regional Water Quality Control Board, San Francisco Bay Region (Water Board) finds that: 1. Purpose of Order This Order establishes Site Cleanup Requirements for the investigation and remediation of impacted soil and groundwater resulting from historical spills and leaks that have occurred during the course of operations of the Stanford Linear

300

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

SciTech Connect

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

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

2012-07-01T23:59:59.000Z

Note: This page contains sample records for the topic "accelerator center slac" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


301

acceleration  

NLE Websites -- All DOE Office Websites (Extended Search)

middle name. The head of Fermilab's Accelerator Division explains a basic idea of high-energy physics in everyday language. Painless Physics Articles BEAM COOLING August 2, 1996...

302

SLAC Next-Generation High Availability Power Supply  

SciTech Connect

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

Bellomo, P.; MacNair, D.; /SLAC; ,

2010-06-11T23:59:59.000Z

303

An X-Band Gun Test Area at SLAC  

SciTech Connect

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

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

2012-09-07T23:59:59.000Z

304

SLAC Dosimeter / ID Request Form A  

NLE Websites -- All DOE Office Websites (Extended Search)

Feb 2009 (updated 13 May 2010) SLAC-I-760-0A07J-006-R010 1 of 2 Feb 2009 (updated 13 May 2010) SLAC-I-760-0A07J-006-R010 1 of 2 SLAC Dosimeter / ID Request Form A (For applicants who have completed SLAC Environment, Safety, and Health Training) Sections 1-5 completed by applicant. Section 1: Contact Information Last name: First name: MI: Male Female Birth year (yyyy): Job title: Contact information/mailing address: City: State: Zip code: Country: Dept/Group: Phone number: Mail stop: Users or non-SLAC employees only: List employer, company, or university : Section 2: Identification Badge Request I am applying for my first SLAC identification badge; I have successfully completed the following ES&H training (indicate all that apply): SON SOC EOESH GERT RWT I RWT II

305

Archives and History Office: SLAC Nobel Prizes  

NLE Websites -- All DOE Office Websites (Extended Search)

SLAC Nobel Prizes SLAC Nobel Prizes SLAC Nobel Prizes Burton Richter 1976 Burton Richter (SLAC) and Samuel C. C. Ting (MIT)shared the 1976 Nobel Prize in Physics "for their pioneering work in the discovery of a heavy elementary particle of a new kind." (Logbook page from J/Psi particle discovery experiment.) (Pictured: Burton Richter at SLAC in 1976) Richard Taylor, 1990 Nobel group, with Friedman, Kendall and Taylor in front Richard E. Taylor (SLAC), Jerome I. Friedman (MIT), and Henry W. Kendall (MIT) shared the 1990 Nobel Prize in Physics "for their pioneering investigations concerning deep inelastic scattering of electrons on protons and bound neutrons, which have been of essential importance for the development of the quark model in particle physics." (Pictured: Richard Taylor at left, Group at Nobel Ceremony in Stockholm in 1990, with Friedman, Kendall and Taylor in front row)

306

HELICAL UNDULATOR FOR TEST AT SLAC  

NLE Websites -- All DOE Office Websites (Extended Search)

6 CBN 02-10 October 2002 Pulsed Helical Undulator for Test at SLAC Polarized Positron Production Scheme Alexander A. Mikhailichenko Cornell University LEPP Ithaca, New York...

307

SLAC Dosimeter / ID Request Form A  

NLE Websites -- All DOE Office Websites (Extended Search)

Female Birth year (yyyy): Job title: Contact informationmailing address: City: State: Zip code: Country: DeptGroup: Phone number: Mail stop: Users or non-SLAC employees only:...

308

ASSESSING THE FEASIBILITY OF COSMIC-RAY ACCELERATION BY MAGNETIC TURBULENCE AT THE GALACTIC CENTER  

SciTech Connect

The presence of relativistic particles at the center of our Galaxy is evidenced by the diffuse TeV emission detected from the inner {approx}2 Degree-Sign of the Galaxy. Although it is not yet entirely clear whether the origin of the TeV photons is due to hadronic or leptonic interactions, the tight correlation of the intensity distribution with the distribution of molecular gas along the Galactic ridge strongly points to a pionic-decay process involving relativistic protons. In previous work, we concluded that point-source candidates, such as the supermassive black hole Sagittarius A* (identified with the High-Energy Stereoscopic System (HESS) source J1745-290) or the pulsar wind nebulae dispersed along the Galactic plane, could not account for the observed diffuse TeV emission from this region. Motivated by this result, we consider here the feasibility that the cosmic rays populating the Galactic center region are accelerated in situ by magnetic turbulence. Our results indicate that even in a highly conductive environment, this mechanism is efficient enough to energize protons within the intercloud medium to the {approx}>TeV energies required to produce the HESS emission.

Fatuzzo, M. [Physics Deparment, Xavier University, Cincinnati, OH 45207 (United States); Melia, F., E-mail: fatuzzo@xavier.edu, E-mail: fmelia@email.arizona.edu [Department of Physics, Applied Math Program, and Steward Observatory, University of Arizona, AZ 85721 (United States)

2012-05-01T23:59:59.000Z

309

Accelerator  

NLE Websites -- All DOE Office Websites (Extended Search)

1. ACCELERATOR PHYSICS OF COLLIDERS Revised July 2011 by D. A. Edwards (DESY) and M. J. Syphers (MSU) 1.1. Luminosity This article provides background for the High-Energy Collider...

310

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

NLE Websites -- All DOE Office Websites (Extended Search)

0150 0150 October 2003 Submitted to Physics in Perspective *Work supported by Department of Energy contract DE-AC03-76SF00515. Tau Discovery THE DISCOVERY OF THE TAU LEPTON AND THE CHANGES IN ELEMENTARY PARTICLE PHYSICS IN 40 YEARS Martin L. Perl Stanford Linear Accelerator Center and Stanford University, Stanford, CA 94309 Phone: 650-926-4286 Fax: 650-926-4001 Email: martin@slac.stanford.edu Introduction This is a history of my discovery of the tau lepton in the 1970s for which I was awarded the Nobel Prize in Physics. I have previously described some aspects of the discovery. In 1996 in my collection of papers entitled, "Reflections on Experimental Science," 1 I gave a straightforward account of the experimental method and the physics involved in the

311

Science Videos from the SLAC Public Lecture Series  

DOE Data Explorer (OSTI)

The SLAC Public Lecture Series is sponsored several times a year by the SLAC Users Association and the SSRL. Distinguished scientists from SLAC, from SSRL, and from other arenas of High Energy Physics present lectures packed with scientific information that even laypeople can understand. A sampling of video titles includes: 1) Hunting the Elusive Higgs Boson and the Origin of Mass, Lance Dixon; 2) Dark Energy. What the? Dr. Risa Wechsler; 3) The Dark Side of the Universe, Marusa Bradac; 4) The Large Hadron Collider: Redefining High Energy, Dr. Sarah Demers; 5) Robots: Fantasy and Reality, Dr. David Grossman; 6) Hydrogen: Fueling the Future, Jennifer Leisch; 7) Making Molecular Movies: 10,000,000,000,000 Frames per Second, Kelly Gaffney; 8) The Violent Universe, Dr. Eduardo do Couto e Silva; 9) A Comet on Earth: Results from the Stardust Mission, Sean Brennan; 10) Whispers of the Big Bang, Sarah Church; 11) Space: The Hunt for Hidden Dimensions, Dr. JoAnne Hewett; 12) Arsenic: The Silent Killer, Andrea Foster; 13)Archimedes: Accelerator Reveals Ancient Text, Uwe Bergmann; 14) Neutrinos Get Under Your Skin, Boris Kayser; 15) The Physics of Super Lasers, Dr. Philip Bucksbaum; 16) Smarter Drugs: How Protein Crystallography Revolutionizes Drug Design, Clyde Smith; 17) Profiling the Invisible: Quantum Mechanics and the Unseen Universe, Dr. Michael Peskin; 18) Physical Attraction: The Mysteries of Magnetism, Dr. Joachim Stohr; 19) The Runaway Universe, Dr. Roger Blandford; 20) Metals, Molecules, Life and Death, Dr. Graham George; 21) Our Lopsided Universe: The Matter with Anti-Matter; 22) Synchrotron Radiation: The Light Fantastic, Herman Winick; 23) All About SLAC: What Goes on in the Worlds Longest Building, Neil Calder.

312

RF Gun Photocathode Research at SLAC  

Science Conference Proceedings (OSTI)

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

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

2012-05-16T23:59:59.000Z

313

Klystron Modulator Design for the Los Alamos Neutron Science Center Accelerator  

SciTech Connect

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

Reass, William A. [Los Alamos National Laboratory; Baca, David M. [Los Alamos National Laboratory; Partridge, Edward R. [retired; Rees, Daniel E. [Los Alamos National Laboratory

2012-06-22T23:59:59.000Z

314

Reliability of Operation at SLAC in the LCLS Era  

Science Conference Proceedings (OSTI)

LCLS hardware availability has been above 90% for the first two commissioning runs of the accelerator. In this paper we compare the reliability data for LCLS (availability, MTBF and MTTR) to those of PEP-II, the e{sup +}e{sup -} collider operating previously at SLAC. It may be seen that the linac availability is not significantly different now than it was before, while the availability of the whole LCLS facility is significantly higher than that of the PEP-II facility as a whole (which was about 87%). Most of the improvement is in the MTTR. Ways to improve availability towards the goal of 95% are discussed.

Wienands, U.; Allen, W.B.; Colocho, W.; Erickson, R.; Stanek, M.; /SLAC

2009-06-19T23:59:59.000Z

315

Commissioning the Echo-Seeding Experiment Echo-7 at SLAC  

Science Conference Proceedings (OSTI)

ECHO-7 is a proof-of-principle echo-enabled harmonic generation (EEHG) FEL experiment in the Next Linear Collider Test Accelerator (NLCTA) at SLAC. The experiment is intended to test the EEHG principle at low electron beam energy, 120 MeV, and determine the sensitivities and limitations to understand the expected performance at the higher energy scales and harmonic numbers required for x-ray FELs. In this paper we present the experimental results from the commissioning run of the completed experimental setup which started in April 2010.

Weathersby, S.a E.Colby; Dunning, M.; Gilevich, S.; Hast, C.; Jobe, K.; McCormick, D.; Nelson, J.; Raubenheimer, T.O.; Soong, K.; Stupakov, G.; Szalata, Z.; Walz, D.; Woodley, M.; Xiang, D.; /SLAC; Pernet, P-L.; /Ecole Polytechnique, Lausanne

2011-06-02T23:59:59.000Z

316

SLAC Snapshot | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Snapshot Snapshot SLAC Snapshot February 3, 2011 - 5:02pm Addthis The LCLS Atomic, Molecular and Optical instrument hutch where experiments were performed | Photo courtesy of Brad Plummer The LCLS Atomic, Molecular and Optical instrument hutch where experiments were performed | Photo courtesy of Brad Plummer Charles Rousseaux Charles Rousseaux Senior Writer, Office of Science "Say cheese!" Millions of Americans are likely to be saying that this weekend, and not just those cheering on the Packers this weekend (take them by three). After all, Super Bowl parties are a great place to take pictures, especially if your team happens to be winning. But it's tough to take great pictures of a crowd that's constantly moving. It's even harder if you've got extra-hyper toddlers or extra-squirmy pets. So rather than

317

SLAC Site Office CX Determinations | U.S. DOE Office of Science (SC)  

Office of Science (SC) Website

SLAC Site Office CX Determinations SLAC Site Office CX Determinations Integrated Support Center (ISC) ISC Home About Services Freedom of Information Act (FOIA) Privacy Act Categorical Exclusion Determinations Contact Information Integrated Support Center Roxanne Purucker U.S. Department of Energy 9800 S. Cass Avenue Argonne, IL 60439 P: (630) 252-2110 Larry Kelly U.S. Department of Energy 200 Administration Road Oak Ridge, TN 37830 P: (865) 576-0885 Categorical Exclusion (CX) Determinations SLAC Site Office CX Determinations Print Text Size: A A A RSS Feeds FeedbackShare Page CX Determinations prior to October 2009 should be requested from David Osugi. Categorical Exclusion Determination Documents (CX Determinations): * Determination Date Name of Action: Description Categorical Exclusion Number External link

318

ESTB: A New Beam Test Facility at SLAC  

SciTech Connect

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

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

2011-04-05T23:59:59.000Z

319

servation of exhibits at SLAC and  

NLE Websites -- All DOE Office Websites (Extended Search)

servation of exhibits at SLAC and servation of exhibits at SLAC and CERN, while the shower stall concept emerged in early discussions about how to build a walk-in detector. It took over a year of meeting, planning and prototyping to produce the final product-but the careful work was worth it since the exhibit has been a big hit with visitors. Safety concerns dictated the de- sign of the laser array. The team want-

320

X-BAND KLYSTRON DEVELOPMENT AT SLAC  

Science Conference Proceedings (OSTI)

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

Vlieks, Arnold E.; /SLAC

2009-08-03T23:59:59.000Z

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321

Prototype Detector and Chip Technology SLAC | U.S. DOE Office of Science  

Office of Science (SC) Website

Prototype Detector Prototype Detector and Chip Technology SLAC Laboratory Policy and Evaluation (LPE) LPE Home Staff M&O Contracts SC Laboratory Appraisal Process Laboratory Planning Process Work for Others in the Office of Science Laboratory Directed Research and Development (LDRD) DOE's Philosophy on LDRD Frequently Asked Questions Success Stories Brochures Additional Information LDRD Program Contacts Technology Transfer DOE National Laboratories Contact Information Laboratory Policy and Evaluation U.S. Department of Energy SC-32/Forrestal Building 1000 Independence Ave., SW Washington, DC 20585 P: (202) 586-5447 F: (202) 586-3119 Success Stories Prototype Detector and Chip Technology SLAC Print Text Size: A A A RSS Feeds FeedbackShare Page Prototype Detector and Chip Technology SLAC National Accelerator Laboratory develops effective capture for gamma

322

Argonne Accelerator Institute  

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Argonne Accelerator Institute: Mission The mission of the Argonne Accelerator Institute is centered upon the following related goals: Locate next generation accelerator facilities...

323

Argonne Accelerator Institute  

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Useful Links Useful Links Argonne National Laboratory Accelerator Sites Conferences Advanced Photon Source (APS) Argonne Wakefield Accelerator (AWA) Argonne Tandem Linear Accelerator System (ATLAS) High Energy Physics Division RIA (????) Link to JACoW (Joint Accelerator Conferences Website) Fermi National Accelerator Laboratory Fermilab-Argonne Collaboration Accelerator Physics Center Workshops Other Accelerator Institutes Energy Recovering Linacs Center for Advance Studies of Accelerators (Jefferson Labs) Center for Beam Physics (LBNL) Accelerator Test Facility (BNL) The Cockcroft Institute (Daresbury, UK) John Adams Institute (Rutherford, UK) ERL2009 to be held at Cornell ERL2007 ERL2005 DOE Laboratory with Accelerators Fermilab Stanford Linear Accelerator Center Brookhaven National Laboratory

324

Laser Safety for the Experimental Halls at SLAC_s Linac Coherent Light Source (LCLS)  

SciTech Connect

The LCLS at the SLAC National Accelerator Laboratory will be the world's first source of an intense hard x-ray laser beam, generating x-rays with wavelengths of 1nm and pulse durations less than 100fs. The ultrafast x-ray pulses will be used in pump-probe experiments to take stop-motion pictures of atoms and molecules in motion, with pulses powerful enough to take diffraction images of single molecules, enabling scientists to elucidate fundamental processes of chemistry and biology. Ultrafast conventional lasers will be used as the pump. In 2009, LCLS will deliver beam to the Atomic Molecular and Optical (AMO) Experiment, located in one of 3 x-ray Hutches in the Near Experimental Hall (NEH). The NEH includes a centralized Laser Hall, containing up to three Class 4 laser systems, three x-ray Hutches for experiments and vacuum transport tubes for delivering laser beams to the Hutches. The main components of the NEH laser systems are a Ti:sapphire oscillator, a regen amplifier, green pump lasers for the oscillator and regen, a pulse compressor and a harmonics conversion unit. Laser safety considerations and controls for the ultrafast laser beams, multiple laser controlled areas, and user facility issues are discussed.

Woods, Michael; Anthony, Perry; /SLAC; Barat, Ken; /LBL, Berkeley; Gilevich, Sasha; Hays, Greg; White, William E.; /SLAC

2009-01-15T23:59:59.000Z

325

S-Band Loads for SLAC Linac  

SciTech Connect

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

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

2012-08-28T23:59:59.000Z

326

2012 Annual Planning Summary for SLAC Site Office  

Energy.gov (U.S. Department of Energy (DOE))

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

327

PEP-II Large Power Supplies Rebuild Program at SLAC  

SciTech Connect

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

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

2005-05-17T23:59:59.000Z

328

SLAC collider injector, RF-drive synchronization and trigger electronics, and 15-AMP thermionic-gun development  

SciTech Connect

The rf drive system for the Collider Injector Development (EL CID) including laser timing, subharmonic buncher drive and phasing, and accelerator rf drive is described. The rf synchronized master trigger generation scheme for the collider is outlined. Also, a 15 amp peak, 200 kV short pulse gun being developed at SLAC as a backup to the Sinclair laser gun is described.

Koontz, R.; Miller, R.; McKinney, T.; Wilmunder, A.

1981-02-01T23:59:59.000Z

329

Hazard Analysis for the High Power Accelerator Production of Tritium (APT) Experiments at the Los Alamos Neutron Scattering Center (LANSCE).  

SciTech Connect

The Accelerator Production of Tritium (APT) Target/Blanket and Materials Engineering Demonstration and Development (ED and D) Project has undertaken a major program of high-power materials irradiation at the Los Alamos Neutron Science Center (LANSCE) Accelerator. Five experiments have been installed in the Target A-6 area, immediately before the Isotope Production facility and the LANSCE bearnstop, where they will take a 1.0-mAmp-proton beam for up to 10 months. This operation is classed as a Nuclear Category (cat)-3 activity, since enough radionuclides buildup in the path of tie beam to exceed cat-3 threshold quantities. In the process of analyzing this buildup, it was realized that a loss of coolant accident (LOCA) could result in oxidation and subsequent vaporization of certain tungsten elements contained in our experiments. If this process occurs in the presence of steam, breakup of the water molecule would also provide a potentially explosive source of hydrogen, causing maximum release of radioactive aerosols to the surrounding environment. This process can occur in a matter of seconds. Such a release would result in potentially unacceptable dose to the public at the LANSCE site boundary, 800 meters from the A-6 area.

Waters, L.S.

1999-06-08T23:59:59.000Z

330

SLAC National Accelerator Laboratory - NuSTAR Rises to Guide...  

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universe. For example, it will use its X-ray eye to examine jets of particles blasting out of active galactic nuclei that have already been pinpointed by the Fermi...

331

SLAC National Accelerator Laboratory - A New Tool to Split X...  

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with precisely controlled timing, allowing scientists to trigger and measure specific ultrafast changes in atoms and molecules. (Click to view larger image.) This soft X-ray...

332

SLAC National Accelerator Laboratory - Fifth X-ray Instrument...  

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and more.) The technique has been used for years to probe materials with visible-light lasers, and more recently with X-ray light from synchrotrons. But the LCLS is the first...

333

SLAC National Accelerator Laboratory - Superhard Diamond-Denting...  

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is pressed between the flattened tips of two opposing diamonds. Scientists can shine lasers or X-rays through the transparent diamonds to observe and identify any atomic-scale...

334

SLAC National Accelerator Laboratory - Self-seeding has the potential...  

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Extreme Plasma Theories Put to the Test August 6, 2012 Menlo Park, Calif. - The first controlled studies of extremely hot, dense matter have overthrown the widely accepted...

335

SLAC National Accelerator Laboratory - Small X-band Photoinjector...  

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when hit by light. Photoinjectors are used to generate electrons for free-electron lasers (FELs) like the Linac Coherent Light Source, among other things, and this development...

336

SLAC National Accelerator Laboratory - Firing Up LCLS for Fifth...  

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Firing Up LCLS for Fifth Run - With All Six Instruments By Janet Rae-Dupree November 14, 2011 After four hugely successful runs, operation of the Linac Coherent Light Source has...

337

SLAC National Accelerator Laboratory - LCLS Teams Up with DESY...  

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LCLS Teams Up with DESY on Shortest X-ray Exposure of a Protein Crystal Ever January 4, 2012 from Deutsches Elektronen-Synchrotron DESY An international research team headed by...

338

SLAC National Accelerator Laboratory - Lower Energy Could Lead...  

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Molecular and Optical Science (AMO) instruments. There are a few X-ray free electron lasers in the world that currently operate at the carbon edge, though Iverson noted that LCLS...

339

SLAC National Accelerator Laboratory - K-B Mirrors Harness X...  

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B Mirrors Harness X-rays for Science By Mike Ross October 11, 2011 Up close, they look simple as can be: a pair of metal bars, each with one side polished to a brilliant shine. One...

340

SLAC National Accelerator Laboratory - X-ray Laser Uncovers Secrets...  

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at much higher temperatures than is possible today. Until 1986, all the known superconductors worked only at extremely low temperatures, limiting their usefulness. But that...

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341

SLAC National Accelerator Laboratory - SSRL Data Advances Prostate...  

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of knowledge about the molecules that CYP17A1 uses to make androgens and trial-and-error chemistry approaches, but without the detailed knowledge provided by the structure...

342

SLAC National Accelerator Laboratory - First Images from the...  

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planning and constructing the instrument and then transporting it to a mountaintop in Chile where it was mounted on the 4-meter Victor M. Blanco Telescope located at the National...

343

SLAC National Accelerator Laboratory - NSF: Large Synoptic Survey...  

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project - construction of the telescope itself, along with its site on a mountaintop in Chile - in a future budget request. "CD1 approval assured us we could go ahead with the...

344

SLAC National Accelerator Laboratory - KIPAC Celebrates 10th...  

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Celebrates 10th Anniversary with Open House By Lori Ann White March 27, 2013 After a decade spent studying some of the most puzzling questions in astrophysics, providing research...

345

SLAC National Accelerator Laboratory - The Decades-long Search...  

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over two years ago that the Large Hadron Collider kicked off its search for the Higgs boson. But the hunt for the Higgs really began decades ago with the realization of a...

346

SLAC National Accelerator Laboratory - 2013 Nobel Prize for Physics  

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and in discovering the particle that proves the existence of the Higgs field, the Higgs boson. In the 1960s, Higgs and Englert, along with other theorists, including Robert...

347

SLAC National Accelerator Laboratory - Will the Real Higgs Boson...  

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Will the Real Higgs Boson Please Stand Up? By Lori Ann White August 9, 2011 Although physicists from two experiments at CERN's Large Hadron Collider and from Fermilab's Tevatron...

348

SLAC National Accelerator Laboratory - Lepton-Photon Conference...  

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was still the biggest news at this year's Lepton-Photon: the discovery of a Higgs boson at CERN's Large Hadron Collider. Progress has been made in the past year: The new...

349

SLAC National Accelerator Laboratory - Scientists Use LCLS to...  

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Use LCLS to See Photovoltaic Process in Action By Mike Ross February 28, 2012 A surprising atomic-scale wiggle underlies the way a special class of materials reacts to light,...

350

SLAC National Accelerator Laboratory - New Report Lays Out What...  

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adopt if they wish. What's the advantage of having common standards? Well, for example, right now every state has to pay to develop tests for assessing students' knowledge based on...

351

SLAC National Accelerator Laboratory - LCLS-II Passes Key Milestone...  

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LCLS-II Passes Key Milestone in DOE Approval Process By Glennda Chui November 1, 2011 The Department of Energy has approved a preliminary budget, schedule and design plans for the...

352

SLAC National Accelerator Laboratory - An Ear for Science: The...  

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and they are very small. As a result, Bellis inhabits a world of visualizations. Animations, graphs, computer-drawn images, Bellis uses them all to try to picture the scene...

353

SLAC National Accelerator Laboratory - A Grand Slam for Science  

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Radiation Lightsource, found himself snipping hair all day long as he explained the fundamentals of laser diffraction to inquisitive minds both young and old. "It was fun to see...

354

SLAC National Accelerator Laboratory - DOE Celebrates Women in...  

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DOE Celebrates Women in STEM March 20, 2013 In celebration of Women's History Month, the Department of Energy recently launched a new feature, Women @ Energy, which showcases DOE...

355

SLAC National Accelerator Laboratory - Fermi Sees Record Gamma...  

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Fermi Sees Record Gamma-ray Burst May 3, 2013 A record-setting blast of gamma rays from a dying star in a distant galaxy has wowed astronomers around the world. The eruption, which...

356

SLAC National Accelerator Laboratory - The Universe Through Fermi...  

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Five Years By Lori Ann White August 22, 2013 On June 11, 2008, what was then the Gamma-ray Large Area Space Telescope rode a Delta II rocket into low-Earth orbit. After two...

357

SLAC National Accelerator Laboratory - Creating the Heart of...  

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time and creates a plasma which is under enormous pressure and temperature" without fracturing the outer shell of the sapphire. Of particular note, the paper says, is that the...

358

SLAC National Accelerator Laboratory - Pledges of Support Keep...  

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of World War II. Current members of the SESAME Council are Bahrain, Cyprus, Egypt, Iran, Israel, Jordan, Pakistan, the Palestinian Authority and Turkey. Sir Chris...

359

SLAC National Accelerator Laboratory - Steven M. Kahn Named Director...  

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LSST will address the most pressing questions in astronomy and physics, drive advances in big-data science and computing and create opportunities for transformative STEM education....

360

SLAC National Accelerator Laboratory - X-ray Laser Takes Aim...  

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Laser Takes Aim at Cosmic Mystery December 12, 2012 Menlo Park, Calif. - Scientists have used powerful X-rays from the Linac Coherent Light Source (LCLS) at the U.S. Department of...

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361

SLAC National Accelerator Laboratory - LCLS Gets New Equipment...  

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new instrument, start assembling a new "self-seeding" system that will focus soft X-ray laser pulses into a bright, narrow band of colors, and upgrade several laser systems during...

362

SLAC National Accelerator Laboratory - The Man at the End of...  

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Man at the End of the X-ray Laser By Glenn Roberts Jr. February 5, 2013 Daniel DePonte, a pioneer in finding ways to serve up a steady and precise supply of crystals, viruses and...

363

SLAC National Accelerator Laboratory - X-ray Laser Explores How...  

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How to Write Data with Light By Glenn Roberts Jr. March 19, 2013 Using laser light to read and write magnetic data by quickly flipping tiny magnetic domains could help keep pace...

364

SLAC National Accelerator Laboratory - 2013 Sakurai Award Winner...  

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now that the Large Hadron Collider hasn't yet found any new particles besides the Higgs," Dixon said. "We'll probably need to understand the Standard Model to an...

365

SLAC National Accelerator Laboratory - First North American Website...  

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debut on Dec. 12, 1991, got a warm welcome from a physics community starved for a simple way to share research results through a worldwide database of scientific paper abstracts....

366

SLAC National Accelerator Laboratory - Study Reveals Milky Way...  

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resulting model of the universe resembles what we see today, then the theory is on the right track. The researchers' simulation passed this test; the computer simulation...

367

SLAC National Accelerator Laboratory - BaBar Experiment Confirms...  

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nice is that the effect was there the whole time, but nobody had thought about it the right way before." Time violation had previously been seen in particles called neutral...

368

SLAC National Accelerator Laboratory - LCLS Ramps Up for Fourth...  

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earlier this year. Now XPP instrument scientist David Fritz is ticking items off a laundry list of 141 shutdown tasks. "We're moving some things around and will have to...

369

SLAC National Accelerator Laboratory - A Solar Energy Chip 100...  

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A Solar Energy Chip 100x More Efficient By Mike Ross March 19, 2013 Scientists working at the Stanford Institute for Materials and Energy Sciences (SIMES) have improved an...

370

SLAC National Accelerator Laboratory - Fermi Gamma-ray Space...  

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Earth Blocking Charged Particles This illustration shows an example of the Earth's geomagnetic field and the Earth's "shadow" blocking particles of one charge while allowing...

371

SLAC National Accelerator Laboratory - Diamond-like Coating Improves...  

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News Feature Archive Diamond-like Coating Improves Electron Microscope Images By Mike Ross November 26, 2012 Coating the surface of a material with a single layer of diamond-like...

372

SLAC National Accelerator Laboratory - X-rays Capture Electron...  

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X-rays Capture Electron 'Dance' By Glenn Roberts Jr. January 30, 2013 The way electrons move within and between molecules, transferring energy as they go, plays an important role...

373

SLAC National Accelerator Laboratory - New Tool to Measure X...  

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got information about the lengths of LCLS X-ray pulses indirectly, by measuring the electron bunches that give rise to the X-ray pulses and making certain calculations. The new...

374

SLAC National Accelerator Laboratory - Hydrogen Fuel Tech Gets...  

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2011, doi:10.1038nmat3008 (subscription required) SHARE Tiny Silicon Pillars A scanning electron microscope image of tiny silicon pillars, used to absorb light. When dotted with...

375

SLAC National Accelerator Laboratory - Study Cracks a Secret...  

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at all. Then the researchers in Germany examined these samples in several ways: with an electron microscope, by neutron scattering and with an X-ray beam at BESSY II, a...

376

SLAC National Accelerator Laboratory - Xradia: A Pioneering Provider...  

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Celsius. Piero Pianetta, SSRL deputy director, vividly remembers his decision to buy the microscope from the then-new company during the most-recent upgrade of the Stanford...

377

SLAC National Accelerator Laboratory - Scientists Get First Detailed...  

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atom sticks out above its carbon neighbors and contributes about half of its extra electron to the graphene lattice, changing its electronic properties. The image was made...

378

SLAC National Accelerator Laboratory - Fab Team Scales Up Production...  

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- thus the need for such a punishing schedule. Where previous phases used 4 kilograms to 9 kilograms of germanium, the next phase of the experiment, called...

379

SLAC National Accelerator Laboratory - How Slow is Slow? EXO...  

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to happen and as few places to hide as possible. A detector chamber filled with 200 kilograms of liquid xenon takes care of the first strategic objective - the xenon has been...

380

SLAC National Accelerator Laboratory - Annual SSRL Award Honors...  

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on organic semiconductors - materials with applications in light-emitting detectors and solar cells - "produced many original and groundbreaking results." For example, it has...

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381

SLAC National Accelerator Laboratory - Man-made Material Shows...  

NLE Websites -- All DOE Office Websites (Extended Search)

This hints at the possibility the LAOSTO interface may exhibit another unconventional behavior: magnetism and superconductivity coexisting, a possibility that, said...

382

SLAC National Accelerator Laboratory - Metallic Glass: A Crystal...  

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Metallic Glass: A Crystal at Heart June 16, 2011 Menlo Park, Calif.-Glass, by definition, is amorphous; its atoms lack order and are arranged every which way. But when scientists...

383

SLAC National Accelerator Laboratory - SSRL Helps Stanford Scientists...  

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3, 2012 Organic semiconductors could usher in an era of foldable smartphones, better high-definition television screens and clothing made of materials that can harvest energy from...

384

SLAC National Accelerator Laboratory - X-ray Laser Explores New...  

NLE Websites -- All DOE Office Websites (Extended Search)

DNA Building Blocks By Glenn Roberts Jr. March 11, 2013 The founding father of DNA nanotechnology - a field that forges tiny geometric building blocks from DNA strands - recently...

385

SLAC National Accelerator Laboratory - All Systems Go: A New...  

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All Systems Go: A New High-energy Record for LCLS By Glenn Roberts Jr. June 18, 2013 John Hill watched with eager anticipation as controllers ramped up the power systems driving...

386

SLAC National Accelerator Laboratory - Linac Coherent Light Source...  

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LCLS - Linac Coherent Light Source Banner image of LCLS undulator hall. LCLS, the world's first hard X-ray free-electron laser, pushes science to new extremes with ultrabright,...

387

SLAC National Accelerator Laboratory - LCLS Offers New Method...  

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LCLS Offers New Method for Examining Membrane Proteins By Diane Rezendes Khirallah March 14, 2012 Many membrane proteins serve as gateways in and out of the cell. Because they act...

388

SLAC National Accelerator Laboratory - New Program Broadens the...  

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New Program Broadens the Reach of LCLS Crystallography Experiments By Glenn Roberts Jr. July 17, 2013 A new screening program will allow researchers to quickly confirm whether...

389

SLAC National Accelerator Laboratory - New Test Bed Probes the...  

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New Test Bed Probes the Origin of Pulses at LCLS By Glenn Roberts Jr. July 23, 2013 It all comes down to one tiny spot on a diamond-cut, highly pure copper plate. That's where...

390

SLAC National Accelerator Laboratory - LCLS Finding May Lead...  

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LCLS Finding May Lead to Better Models of Matter Under Extreme Conditions By Diane Rezendes Khirallah June 20, 2012 Any nanometer-sized sample exposed to the intense X-ray pulses...

391

SLAC National Accelerator Laboratory - New X-ray Tool Proves...  

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German Electron Synchrotron (DESY) in Hamburg, Germany, the paper's lead author. Many LCLS experiments rely on conventional laser systems, known as optical lasers, that excite...

392

SLAC National Accelerator Laboratory - Tools of the Trade: Diamonds...  

NLE Websites -- All DOE Office Websites (Extended Search)

It's been used since the 1960s to focus X-rays. But the X-ray pulses at the LCLS, which are a billion times brighter than at any previous light source, damage today's...

393

SLAC National Accelerator Laboratory - Using Light to Switch...  

NLE Websites -- All DOE Office Websites (Extended Search)

arrangement on the mechanisms of ultrafast magnetic switching," Schlotter said. LCLS has been used for similar experiments studying nanoscale magnetic switching, and...

394

SLAC National Accelerator Laboratory - Sharper Images for Extreme...  

NLE Websites -- All DOE Office Websites (Extended Search)

Sharper Images for Extreme LCLS Experiments By Glenn Roberts Jr. April 17, 2013 PHOTO: Researchers working with MEC instruments The Matter in Extreme Conditions (MEC) station at...

395

SLAC National Accelerator Laboratory - New Battery Design Could...  

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Site Entry Information Lodging & Housing Transportation Press Release Archive New Battery Design Could Help Solar and Wind Energy Power the Grid April 24, 2013 Menlo Park,...

396

SLAC National Accelerator Laboratory - Building a Better Battery...  

NLE Websites -- All DOE Office Websites (Extended Search)

Information Lodging & Housing Transportation News Feature Archive Building a Better Battery for Renewable Energy Storage By Glenn Roberts Jr. October 25, 2012 Solar, wind and...

397

SLAC National Accelerator Laboratory - X-ray Laser Brings Gold...  

NLE Websites -- All DOE Office Websites (Extended Search)

a variety of chemical reactions, and nanocrystals of barium titanate, which multiply energy storage capacity in electronics. "Little bits of optimization of catalysts can go...

398

SLAC National Accelerator Laboratory - SSRL Contributes to Platinum...  

NLE Websites -- All DOE Office Websites (Extended Search)

joined forces to investigate a catalyst that promotes energy-releasing reactions in fuel cells. They discovered that the catalyst, made of ultrathin platinum layers grown on...

399

SLAC National Accelerator Laboratory - NASA's WISE Mission Sees...  

NLE Websites -- All DOE Office Websites (Extended Search)

from NASA Pasadena, Calif. - Astronomers are actively hunting a class of supermassive black holes throughout the universe called blazars, thanks to data collected by NASA's...

400

SLAC National Accelerator Laboratory - Research Paints New Picture...  

NLE Websites -- All DOE Office Websites (Extended Search)

the feathers were patterned-light in color, with a dark edge and tip-rather than all black, as previously thought. The findings came from X-ray experiments at the Department of...

Note: This page contains sample records for the topic "accelerator center slac" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


401

SLAC National Accelerator Laboratory - Energy@Stanford Conference...  

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events at http:pixlee.comenergy444. SHARE Graduate students being treated to a tour of SSRL led by beamline scientist Ben Kocar, who is faintly visible through an...

402

SLAC National Accelerator Laboratory - X-ray Laser Research Ranks...  

NLE Websites -- All DOE Office Websites (Extended Search)

selected science "Breakthrough of the Year": the discovery of what appears to be the Higgs boson. Scientists aimed the Linac Coherent Light Source X-ray laser at thousands of tiny...

403

SLAC National Accelerator Laboratory - Iron-based Superconductors...  

NLE Websites -- All DOE Office Websites (Extended Search)

the shape of a sphere. In contrast, Cooper pairs in the cuprate family of high-temperature superconductors exhibit d-wave pairing symmetry, which looks a bit like a four-leaf...

404

SLAC National Accelerator Laboratory - High-temperature Superconductor...  

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evidence yet that a puzzling gap in the electronic structures of some high-temperature superconductors could indicate a new phase of matter. Understanding this "pseudogap" has...

405

SLAC National Accelerator Laboratory - Obama Honors Sidney Drell...  

NLE Websites -- All DOE Office Websites (Extended Search)

chromodynamics, application of science to inform national policies in security and intelligence, and distinguished contributions as an advisor to the United States Government."...

406

SLAC National Accelerator Laboratory - Giant Virus, Tiny Protein...  

NLE Websites -- All DOE Office Websites (Extended Search)

A big payoff from tiny crystals The protein structure experiments were led by Chapman and Arizona State's John Spence and Petra Fromme. They chose as their target Photosystem I, a...

407

SLAC National Accelerator Laboratory - From Parchment to People...  

NLE Websites -- All DOE Office Websites (Extended Search)

invented for scanning ancient manuscripts is now being used to probe the human brain, in research that could lead to new medical imaging methods and better treatments for stroke...

408

SLAC National Accelerator Laboratory - Harold Hwang Wins Top...  

NLE Websites -- All DOE Office Websites (Extended Search)

to give commemorative lectures at major universities, academies and high schools across Korea. Hwang is an expert in creating complex oxide materials with extraordinary electronic...

409

The Environments of SLACS Gravitational Lenses  

E-Print Network (OSTI)

We report on an investigation of the environments of the SLACS sample of gravitational lenses. The local and global environments of the lenses are characterized using SDSS photometry and, when available, spectroscopy. We find that the lens systems that are best modelled with steeper than isothermal density profiles are more likely to have close companions than lenses with shallower than isothermal profiles. This suggests that the profile steepening may be caused by interactions with a companion galaxy as indicated by N-body simulations of group galaxies. The global environments of the SLACS lenses are typical of non-lensing SDSS galaxies with comparable properties to the lenses, and the richnesses of the lens groups are not as strongly correlated with the lens density profiles as the local environments. Furthermore, we investigate the possibility of line-of-sight contamination affecting the lens models but do not find a significant over-density of sources compared to lines of sight without lenses.

M. W. Auger

2007-10-09T23:59:59.000Z

410

LLRF System Upgrade for the SLAC Linac  

SciTech Connect

The Linac Coherent Light Source (LCLS) at SLAC is in full user operation and has met the stability goals for stable lasing. The 250pC bunch can be compressed to below 100fS before passing through an undulator. In a new mode of operation a 20pC bunch is compressed to about 10fS. Experimenters are regularly using this shorter X-ray pulse and getting pristine data. The 10fS bunch has timing jitter on the order of 100fS. Physicists are requesting that the RF system achieve better stability to reduce timing jitter. Drifts in the RF system require longitudinal feedbacks to work over large ranges and errors result in reduced performance of the LCLS. A new RF system is being designed to help diagnose and reduce jitter and drift in the SLAC linac.

Hong, Bo; /SLAC; Akre, Ron; /SLAC; Pacak, Vojtech; /SLAC

2012-07-06T23:59:59.000Z

411

Liquid Hydrogen Target Experience at SLAC  

DOE Green Energy (OSTI)

Liquid hydrogen targets have played a vital role in the physics program at SLAC for the past 40 years. These targets have ranged from small ''beer can'' targets to the 1.5 m long E158 target that was capable of absorbing up to 800 W without any significant density changes. Successful use of these targets has required the development of thin wall designs, liquid hydrogen pumps, remote positioning and alignment systems, safety systems, control and data acquisition systems, cryogenic cooling circuits and heat exchangers. Detailed operating procedures have been created to ensure safety and operational reliability. This paper surveys the evolution of liquid hydrogen targets at SLAC and discusses advances in several of the enabling technologies that made these targets possible.

Weisend, J.G.; Boyce, R.; Candia, A.; Kaminskas, W.; Mark, J.; Racine, M.; St. Lorant, S.; Weber, T.; /SLAC; Arnold, R.; Bosted, P.; /Massachusetts U., Amherst; Carr, R.; Gao, J.; Jones, C.E.; McKeown, R.; /Caltech

2005-08-29T23:59:59.000Z

412

Ground Motion Model of the SLAC Site ?  

E-Print Network (OSTI)

motion p(?, L) can be written as p(?, L) = p(?)2(1 ? c(?, L)) which in turn can be transformed into P(?, k) [9]. We present a ground motion model for the SLAC site. This Measurements [2, 6] show that the fast motion in a rea-model is based on recent ground motion studies performed sonably quiet site consists primarily of elastic waves prop-at SLAC as well as on historical data. The model includes agating with a high velocity v (of the order of km/s). wave-like, diffusive and systematic types of motion. An The correlation is then completely defined by this velocity attempt is made to relate measurable secondary properties (which may be a function of frequency) and by the distri-of the ground motion with more basic characteristics such bution of the noise sources. In the case where the waves as the layered geological structure of the surrounding earth, propagate on the surface and are distributed uniformly in depth of the tunnel, etc. This model is an essential step in azimuthal angle, the correlation is given by c(?, L) = evaluating sites for a future linear collider. ?cos(?L/v cos(?))?? = J0(?L/v) and the corresponding 2-D spectrum of the ground motion is P(?, k) = 2p(?) / ? (?/v(f)) 2 ? k2, |k | ? ?/v(f). The absolute power spectrum of the fast motion, assumed for the SLAC model, corresponds to measurements performed at 2 AM in one of the quietest locations at SLAC, sector 10 of the linac [2], (see Fig.1). The spatial properties are defined by the phase velocity found from correlation measurements v(f) = 450 + 1900 exp(?f/2) (with v in m/s, f in Hz) [2]. 1

Andrei Seryi; Tor Raubenheimer

2000-01-01T23:59:59.000Z

413

Recent Polarized Photocathode R& D at SLAC  

DOE Green Energy (OSTI)

The SLAC high-gradient-doped MOCVD-grown GaAs cathode presently in use consists of a strained GaAs low-doped layer (with a small admixture of P) capped by a few nanometers of highly Zn-doped GaAs, which is heat-cleaned at relatively high temperature and then activated by Cs/NF{sub 3} co-deposition. The high-gradient-doped structure solves the problem of the surface charge limit that the previously-used SLAC cathodes had, and this preparation procedure has produced satisfactory results. However, the preparation procedure has a few weaknesses that prevent cathodes from achieving the ultimate desired performance. The peak polarization is limited to 80% due to strain relaxation in the relatively thick strained layers. Also dopant loss causes the surface charge limit effect to reappear after multiple high-temperature heat-cleanings. In this paper, we will discuss recent progress made at SLAC that addresses these limitations, including using the MBE growth technique with Be doping and using the superlattice structure. In addition, to reduce the heat-cleaning temperature, an atomic hydrogen cleaning technique is explored.

Luh, Dah-An

2002-12-13T23:59:59.000Z

414

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

SciTech Connect

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

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

2006-06-01T23:59:59.000Z

415

An NLC-Style Short Bunch Length Compressor in the SLAC Linac*  

E-Print Network (OSTI)

Experimental tests of a second bunch length compressor in a linac is important for the next generation of linear colliders and for other future accelerators. These future accelerators need bunches with lengths of order 0.06- 0.2 mni. At these lengths, new accelerator dynamics will be encountered. We have studied the possibility of constructing a second compressor with the present SLAC linac and have found a reasonable design. The core of this project is to recontigure an old beamline (BL-90) at the 1OOOm location in the linac to: (1) extract a 10 GeV bunch, (2) pass it through a new 96 m long transport line in which length compression is done, and (3) reinject the beam into the main linac in an available drift section. Using the resulting compressed bunch, accelerator physics tests would be performed in the remaining downstream linac with the resulting very high charge density. The bunch compression in this transport line results Erom ExWiq BASlWBL90 aipor the TRANSPORT element R56 as determined from the optics of the transport line. AZ = R56 AEJE. For example, if AZ =.-0.5 mm, AIYE = OS%, R56 =-0.1 m, a bunch of 5 x lOlo particles would have a final length (03 of about 0.08 mm with apeakcurrentof96OOA. II. Decription of the Project This project would use as much existing SLAC equipment as possible: including the SLC accelerator complex, old SPEAR injection line magnets, spare power supplies and diagnostics. No civil construction is required. The design is aimed at a rapid construction and installation schedule, maintaining flexibility and with no operational impact on other SLAC programs: SLC, FFTB, or B-Factory. A schematic layout of the bunch compressor is shown in Fig. 1. The basic beam parameters are listed in Table 1. The

John T. Seeman; John T. Seeman

1993-01-01T23:59:59.000Z

416

Plasma Wakefield Acceleration  

NLE Websites -- All DOE Office Websites (Extended Search)

rpwa rpwa Sign In Launch the Developer Dashboard SLAC National Accelerator Laboratory DOE | Stanford | SLAC | SSRL | LCLS | AD | PPA | Photon Science | PULSE | SIMES FACET User Facility : FACET An Office of Science User Facility Search this site... Search Help (new window) Top Link Bar FACET User Facility FACET Home About FACET FACET Experimental Facilities FACET Users Research at FACET SAREC Expand SAREC FACET FAQs FACET User Facility Quick Launch FACET Users Home FACET Division ARD Home About FACET FACET News FACET Users FACET Experimental Facilities FACET Research Expand FACET Research FACET Images Expand FACET Images SAREC Expand SAREC FACET Project Site (restricted) FACET FAQs FACET Site TOC All Site Content Department of Energy Page Content Plasma Wakefield Acceleration

417

SLAC | 2011 NUFO Annual Meeting, June 27-29, 2011  

NLE Websites -- All DOE Office Websites (Extended Search)

NUFO NUFO National User Facility Organization Home Agenda Location Visitor Information Transportation Tourism & Dining Presentations 2011 NUFO Participants, SLAC BaBar detector,...

418

The Physics Program of a High-Luminosity Asymmetric B Factory at SLAC  

E-Print Network (OSTI)

in Proc. Tau Charm Factory Workshop, SLAC-343 (1989). 6.J. J. Gomez-Cadenas, SLAC-PUB-5019, SCIPP 88/32, submittedGilman and R.L. Singleton, SLAC-PUB-5065 (1989), submitted

Eisner, A.

2010-01-01T23:59:59.000Z

419

Design Optimization for an X-Ray Free Electron Laser Driven by SLAC Linac  

E-Print Network (OSTI)

FREE ELECTRON LASER DRIVEN BY SLAC LINAC Ming Xie, LawrenceLaser (FEL) driven by the SLAC linac. The study assumes theis carried out for the SLAC FEL over all independent system

Xie, Ming

1994-01-01T23:59:59.000Z

420

Integral-field spectroscopy of SLACS lenses  

E-Print Network (OSTI)

The combination of two-dimensional kinematics and gravitational lens modelling permits detailed reconstruction of the phase-space structure of early-type galaxies and sets constraints on the dark-matter distribution in their inner regions. We describe a project which combines integral-field spectroscopy from an ESO Large Programme using VIMOS on the VLT with deep HST ACS and NICMOS images to study a sample of 17 early-type lens galaxies at redshifts between 0.1 and 0.3, drawn from the Sloan Lens ACS survey (SLACS).

Oliver Czoske; Matteo Barnabe; Leon Koopmans

2008-11-14T23:59:59.000Z

Note: This page contains sample records for the topic "accelerator center slac" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


421

Search for Millicharged Particles at SLAC  

E-Print Network (OSTI)

Particles with electric charge q SLAC. This experiment is sensitive to the infrequent excitation and ionization of matter expected from the passage of such a particle. Analysis of the data rules out a region of mass and charge, establishing, for example, a 95%-confidence upper limit on electric charge of 4.1X10^(-5)e for millicharged particles of mass 1 MeV/c^2 and 5.8X10^(-4)e for mass 100 MeV/c^2.

A. A. Prinz; R. Baggs; J. Ballam; S. Ecklund; C. Fertig; J. A. Jaros; K. Kase; A. Kulikov; W. G. J. Langeveld; R. Leonard; T. Marvin; T. Nakashima; W. R. Nelson; A. Odian; M. Pertsova; G. Putallaz; A. Weinstein

1998-04-17T23:59:59.000Z

422

SLAC 16-channel differential TTL output module (Engineering Materials)  

SciTech Connect

The drawings listed on the Drawing List provide the data and specifications for constructing a SLAC 16-channel differential TTL output module as used in the SLAC PEP storage ring instrumentation and control system. It is a CAMAC module used as an output interface module from CAMAC signals.

Not Available

1983-04-05T23:59:59.000Z

423

Relative Humidity in Limited Streamer Tubes for Stanford Linear Accelerator Center's BaBar Detector  

SciTech Connect

The BABAR Detector at the Stanford Linear Accelerator Center studies the decay of B mesons created in e{sup +}e{sup -} collisions. The outermost layer of the detector, used to detect muons and neutral hadrons created during this process, is being upgraded from Resistive Plate Chambers (RPCs) to Limited Streamer Tubes (LSTs). The standard-size LST tube consists of eight cells, where a silver-plated wire runs down the center of each. A large potential difference is placed between the wires and ground. Gas flows through a series of modules connected with tubing, typically four. LSTs must be carefully tested before installation, as it will be extremely difficult to repair any damage once installed in the detector. In the testing process, the count rate in most modules showed was stable and consistent with cosmic ray rate over an approximately 500 V operating range between 5400 to 5900 V. The count in some modules, however, was shown to unexpectedly spike near the operation point. In general, the modules through which the gas first flows did not show this problem, but those further along the gas chain were much more likely to do so. The suggestion was that this spike was due to higher humidity in the modules furthest from the fresh, dry inflowing gas, and that the water molecules in more humid modules were adversely affecting the modules' performance. This project studied the effect of humidity in the modules, using a small capacitive humidity sensor (Honeywell). The sensor provided a humidity-dependent output voltage, as well as a temperature measurement from a thermistor. A full-size hygrometer (Panametrics) was used for testing and calibrating the Honeywell sensors. First the relative humidity of the air was measured. For the full calibration, a special gas-mixing setup was used, where relative humidity of the LST gas mixture could be varied from almost dry to almost fully saturated. With the sensor calibrated, a set of sensors was used to measure humidity vs. time in the LSTs. The sensors were placed in two sets of LST modules, one gas line flowing through each set. These modules were tested for count rate v. voltage while simultaneously measuring relative humidity in each module. One set produced expected readings, while the other showed the spike in count rate. The relative humidity in the two sets of modules looked very similar, but it rose significantly for modules further along the gas chain.

Lang, M.I.; /MIT; Convery, M.; /SLAC; Menges, W.; /Queen Mary, U. of London

2005-12-15T23:59:59.000Z

424

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

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

What Does a Particle Accelerator Have in Common What Does a Particle Accelerator Have in Common with Your Thanksgiving Turkey? Photo of the Week: What Does a Particle Accelerator Have in Common with Your Thanksgiving Turkey? November 16, 2012 - 4:02pm Addthis At the SLAC National Accelerator Laboratory, scientists are using the Facility for Advanced Accelerator Experimental Tests, also known as FACET, to research accelerator science and high-energy density physics. SLAC's particle accelerator may be two miles long, but researchers at FACET are working to develop more compact versions that could be widely used in medicine and industry -- particle accelerators are used for cancer research, processing computer chips, and even producing the shrink wrap used to keep your Thanksgiving turkey fresh. In this photo, Stanford graduate student Spencer Gessner assembles a camera that will monitor an X-ray spectrometer designed to measure FACET's beam energy. Learn more about how FACET works. | Photo courtesy of SLAC National Accelerator Laboratory.

425

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

SciTech Connect

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

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

2011-09-09T23:59:59.000Z

426

SLAC_TN04051_04.dvi  

NLE Websites -- All DOE Office Websites (Extended Search)

8 8 SLAC-TN-04-051 Sep. 2004 (Jan. 2005) Abstract This note documents a set of expressions used to explore the issue of whether or not it is reasonable to consider a conventional positron source for a Tesla formatted beam. The critical issue is that of energy deposition in the conversion target and the comparison of the induced stress with the ultimate tensile strength of the target material. Since the length of the incident beam pulse is large in comparison to the ratio of beam size to the speed of sound, the concurrent pressure pulse dissipates in a time short compared to the overall pulse duration and one is left with only the Electron Conditioning of Technical Aluminum Surfaces ¤ F. Le Pimpec, F. King, and R. E. Kirby

427

Microprocessors in physics experiments at SLAC  

SciTech Connect

The increasing size and complexity of high energy physics experiments is changing the way data are collected. To implement a trigger or event filter requires complex logic which may have to be modified as the experiment proceeds. Simply to monitor a detector, large amounts of data must be processed on line. The use of microprocessors or other programmable devices can help to achieve these ends flexibly and economically. At SLAC, a number of microprocessor-based systems have been built and are in use in experimental setups, and others are now being developed. This talk is a review of existing systems and their use in experiments, and of developments in progress and future plans.

Rochester, L.S.

1981-04-01T23:59:59.000Z

428

SLAC Linac Coherent Light Source User Site  

NLE Websites -- All DOE Office Websites (Extended Search)

LCLS User Check-In Procedures LCLS User Check-In Procedures All users must check in at the User Research Administration (URA) offices upon arrival. Users must complete relevant training and return all forms to User Research Administration, Building 120, Room 211, prior to going to the LCLS Near Experimental Hall (NEH) or starting any experiments. The URA office is staffed Monday-Friday from 8 am to 4 pm. Many steps can and should be completed prior to your arrival: Automated access is now in operation 24/7 at Gate 17 and the Sector 30 Gate. Avoid delays by contacting us before arriving. If you have current safety training and an activated proximity card, your card will open the automated gate. Proceed to User Research Administration (URA) in Building 120 for check-in. However, you will need to first stop at SLAC Security IF you are a

429

Network Management and Performance Monitoring at SLAC  

E-Print Network (OSTI)

Subjectively, the ultimate measurers of system performance are the users and their perceptions of the performance of their networked applications. The performance of a system is affected by the physical network plant (routers, bridges, hubs, etc.) as well as by every "computer " and peripheral device that is attached to it, and the software running on the computers and devices. Performance monitoring of a network must therefore include computer systems and services monitoring and well as monitoring of the physical network plant. This paper will describe how this challenge has been tackled at SLAC, and how, via the World Wide Web 1,2 , this information is made available for quick perusal by concerned personnel and users. INTRODUCTION The ultimate measure of system performance is the perception of the users. The users' perception is generally based on the response time to various commands they enter at their keyboards. This maybe any command from a print command, the submission of a l...

Logg And; C. A. Logg; R. L. A. Cottrell

1995-01-01T23:59:59.000Z

430

Enhanced lensing rate by clustering of massive galaxies: newly discovered systems in the SLACS fields  

E-Print Network (OSTI)

[Abridged] We exploit the clustering of massive galaxies to perform a high efficiency imaging search for gravitational lenses. Our dataset comprises 44 fields imaged by the Hubble Space Telescope (HST) Advanced Camera for Surveys (ACS), each of which is centered on a lens discovered by the Strong Lens ACS Survey (SLACS). We compare four different search methods: 1) automated detection with the HST Archive Galaxy-scale Gravitational Lens Survey (HAGGLeS) robot, 2) examining cutout images of bright galaxies (BGs) after subtraction of a smooth galaxy light distribution, 3) examining the unsubtracted BG cutouts, and 4) performing a full-frame visual inspection of the ACS images. We compute purity and completeness and consider investigator time for the four algorithms, using the main SLACS lenses as a testbed. The first and second algorithms perform the best. We present the four new lens systems discovered during this comprehensive search, as well as one other likely candidate. For each new lens we use the fundamental plane to estimate the lens velocity dispersion and predict, from the resulting lens geometry, the redshifts of the lensed sources. Two of these new systems are found in galaxy clusters, which include the SLACS lenses in the two respective fields. Overall we find that the enhanced lens abundance (30^{+24}_{-8} lenses/degree^2) is higher than expected for random fields (12^{+4}_{-2} lenses/degree^2 for the COSMOS survey). Additionally, we find that the gravitational lenses we detect are qualitatively different from those in the parent SLACS sample: this imaging survey is largely probing higher-redshift, and lower-mass, early-type galaxies.

Elisabeth R. Newton; Philip J. Marshall; Tommaso Treu

2008-10-21T23:59:59.000Z

431

Short-pulse limits in optical instrumentation design for the SLAC Linac Cohereent Light Source (LCLS)  

E-Print Network (OSTI)

Short-pulse limits in optical instrumentation design for the SLAC Linac Cohereent Light Source (LCLS)

Tatchyn, R

1999-01-01T23:59:59.000Z

432

Fermi National Accelerator Laboratory April 2012  

NLE Websites -- All DOE Office Websites (Extended Search)

into applications for the nation's health, wealth and security. Science at Fermilab Illinois Accelerator Research Center The Illinois Accelerator Research Center, or IARC, will...

433

BNL | Accelerating Particles Accelerates Science - With Big Benefits...  

NLE Websites -- All DOE Office Websites (Extended Search)

program focused on developing the next crop of bold accelerator scientists and engineers. Photo of CASE participants The Center for Accelerator Science and Education (CASE)...

434

ANNUAL REPORT ACCELERATOR DIVISION  

E-Print Network (OSTI)

the facility is LBL and SLAC. The six-sided sto- the end ofstorage ring at in SLAC. ',hich colI ide The two-mile-longActual work began with the SLAC linac The contract involved

Authors, Various

2011-01-01T23:59:59.000Z

435

SSRL RDB ID No. : SLAC System ID No.  

E-Print Network (OSTI)

www-conf.slac.stanford.edu/smbxas-ss/2010 The goal of the SSRL SMB XAS Summer School 2010 are SSRL Staff Scientists Ritimukta Sarangi and Samuel Webb. The School will be held at SSRL

Wechsler, Risa H.

436

Visualizing electromagnetic field and particle simulations in accelerators with ParaView  

Science Conference Proceedings (OSTI)

SLAC performs large-scale simulations of Electromagnetic fields and particles for accelerator applications. These simulations run on intricate high order finite element meshes and produce field strengths spanning tens of orders of magnitudes. Such simulations ...

Greg L. Schussman

2009-11-01T23:59:59.000Z

437

Accelerators and the Accelerator Community  

E-Print Network (OSTI)

at SLAC. This device, called the LCLS, will produce coherentfor the last decade (just as LCLS is for this decade). The

Malamud, Ernest

2009-01-01T23:59:59.000Z

438

Final Design of the SLAC P2 Marx Klystron Modulator  

Science Conference Proceedings (OSTI)

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

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

2011-11-08T23:59:59.000Z

439

SSRL HEADLINES July 2008  

NLE Websites -- All DOE Office Websites (Extended Search)

Linear Accelerator Center (SLAC) in California, RIKEN SPring-8 synchrotron and Hiroshima University in Japan and Stockholm University in Sweden. The team, involving SLAC...

440

LINEAR ACCELERATOR  

DOE Patents (OSTI)

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

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

1959-02-17T23:59:59.000Z

Note: This page contains sample records for the topic "accelerator center slac" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


441

SuperB Progress Report for Accelerator  

Science Conference Proceedings (OSTI)

This report details the progress made in by the SuperB Project in the area of the Collider since the publication of the SuperB Conceptual Design Report in 2007 and the Proceedings of SuperB Workshop VI in Valencia in 2008. With this document we propose a new electron positron colliding beam accelerator to be built in Italy to study flavor physics in the B-meson system at an energy of 10 GeV in the center-of-mass. This facility is called a high luminosity B-factory with a project name 'SuperB'. This project builds on a long history of successful e+e- colliders built around the world, as illustrated in Figure 1.1. The key advances in the design of this accelerator come from recent successes at the DAFNE collider at INFN in Frascati, Italy, at PEP-II at SLAC in California, USA, and at KEKB at KEK in Tsukuba Japan, and from new concepts in beam manipulation at the interaction region (IP) called 'crab waist'. This new collider comprises of two colliding beam rings, one at 4.2 GeV and one at 6.7 GeV, a common interaction region, a new injection system at full beam energies, and one of the two beams longitudinally polarized at the IP. Most of the new accelerator techniques needed for this collider have been achieved at other recently completed accelerators including the new PETRA-3 light source at DESY in Hamburg (Germany) and the upgraded DAFNE collider at the INFN laboratory at Frascati (Italy), or during design studies of CLIC or the International Linear Collider (ILC). The project is to be designed and constructed by a worldwide collaboration of accelerator and engineering staff along with ties to industry. To save significant construction costs, many components from the PEP-II collider at SLAC will be recycled and used in this new accelerator. The interaction region will be designed in collaboration with the particle physics detector to guarantee successful mutual use. The accelerator collaboration will consist of several groups at present universities and national laboratories. In Italy these may include INFN Frascati and the University of Pisa, in the United States SLAC, LBNL, BNL and several universities, in France IN2P3, LAPP, and Grenoble, in Russia BINP, in Poland Krakow University, and in the UK the Cockcroft Institute. The construction time for this collider is a total of about four years. The new tunnel can be bored in about a year. The new accelerator components can be built and installed in about 4 years. The shipping of components from PEP-II at SLAC to Italy will take about a year. A new linac and damping ring complex for the injector for the rings can be built in about three years. The commissioning of this new accelerator will take about a year including the new electron and positron sources, new linac, new damping ring, new beam transport lines, two new collider rings and the Interaction Region. The new particle physics detector can be commissioned simultaneously with the accelerator. Once beam collisions start for particle physics, the luminosity will increase with time, likely reaching full design specifications after about two to three years of operation. After construction, the operation of the collider will be the responsibility of the Italian INFN governmental agency. The intent is to run this accelerator about ten months each year with about one month for accelerator turn-on and nine months for colliding beams. The collider will need to operate for about 10 years to provide the required 50 ab{sup -1} requested by the detector collaboration. Both beams as anticipated in this collider will have properties that are excellent for use as sources for synchrotron radiation (SR). The expected photon properties are comparable to those of PETRA-3 or NSLS-II. The beam lines and user facilities needed to carry out this SR program are being investigated.

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

2012-02-14T23:59:59.000Z

442

Solar Technology Acceleration Center (SolarTAC): Cooperative Research and Development Final Report, CRADA Number CRD-07-259  

DOE Green Energy (OSTI)

This agreement allowed NREL to serve as an advisor on SolarTAC - a collaborative effort between Xcel Energy, NREL, and the University of Colorado at Boulder. The collaboration was formed to accelerate pre-commercial and early commercial solar energy technologies to the marketplace. Through this CRADA, NREL participated in the deployment of solar energy generation technologies and related solar equipment for research, testing, validation, and demonstration purposes.

Kramer, W.

2011-10-01T23:59:59.000Z

443

Properties of Trapped Electron Bunches in a Plasma Wakefield Accelerator  

Science Conference Proceedings (OSTI)

Plasma-based accelerators use the propagation of a drive bunch through plasma to create large electric fields. Recent plasma wakefield accelerator (PWFA) experiments, carried out at the Stanford Linear Accelerator Center (SLAC), successfully doubled the energy for some of the 42 GeV drive bunch electrons in less than a meter; this feat would have required 3 km in the SLAC linac. This dissertation covers one phenomenon associated with the PWFA, electron trapping. Recently it was shown that PWFAs, operated in the nonlinear bubble regime, can trap electrons that are released by ionization inside the plasma wake and accelerate them to high energies. These trapped electrons occupy and can degrade the accelerating portion of the plasma wake, so it is important to understand their origins and how to remove them. Here, the onset of electron trapping is connected to the drive bunch properties. Additionally, the trapped electron bunches are observed with normalized transverse emittance divided by peak current, {epsilon}{sub N,x}/I{sub t}, below the level of 0.2 {micro}m/kA. A theoretical model of the trapped electron emittance, developed here, indicates that the emittance scales inversely with the square root of the plasma density in the non-linear 'bubble' regime of the PWFA. This model and simulations indicate that the observed values of {epsilon}{sub N,x}/I{sub t} result from multi-GeV trapped electron bunches with emittances of a few {micro}m and multi-kA peak currents. These properties make the trapped electrons a possible particle source for next generation light sources. This dissertation is organized as follows. The first chapter is an overview of the PWFA, which includes a review of the accelerating and focusing fields and a survey of the remaining issues for a plasma-based particle collider. Then, the second chapter examines the physics of electron trapping in the PWFA. The third chapter uses theory and simulations to analyze the properties of the trapped electron bunches. Chapters four and five present the experimental diagnostics and measurements for the trapped electrons. Next, the sixth chapter introduces suggestions for future trapped electron experiments. Then, Chapter seven contains the conclusions. In addition, there is an appendix chapter that covers a topic which is extraneous to electron trapping, but relevant to the PWFA. This chapter explores the feasibility of one idea for the production of a hollow channel plasma, which if produced could solve some of the remaining issues for a plasma-based collider.

Kirby, Neil; /SLAC

2009-10-30T23:59:59.000Z

444

SLAC Scanner Processor: a FASTBUS module for data collection and processing  

SciTech Connect

A new, general purpose, programmable FASTBUS module, the SLAC Scanner Processor (SSP), is introduced. Both hardware and software elements of SSP operation are discussed. The role of the SSP within the upgraded Mark II Detector at SLAC is described.

Brafman, H.; Glanzman, T.; Lankford, A.J.; Olsen, J.; Paffrath, L.

1984-10-01T23:59:59.000Z

445

SPEAR3 Accelerator Physics Update  

NLE Websites -- All DOE Office Websites (Extended Search)

SPEAR3 ACCELERATOR PHYSICS UPDATE* SPEAR3 ACCELERATOR PHYSICS UPDATE* J. Safranek # , W.J. Corbett, R. Hettel, X. Huang, Y. Nosochkov, J. Sebek, A. Terebilo, SSRL/SLAC, Menlo Park, CA, U.S.A. Abstract The SPEAR3 [1,2] storage ring at Stanford Synchrotron Radiation Laboratory has been delivering photon beams for three years. We will give an overview of recent and ongoing accelerator physics activities, including 500 mA fills, work toward top-off injection, long-term orbit stability characterization and improvement, fast orbit feedback, new chicane optics, low alpha optics & short bunches, low emittance optics, and MATLAB software. The accelerator physics group has a strong program to characterize and improve SPEAR3 performance. INTRODUCTION In this summary of the past three years of accelerator

446

HEPDATA: High Energy Physics Reaction Database (SLAC Mirror)  

DOE Data Explorer (OSTI)

HEPDATA: Reaction Data Database contains numerical values of HEP scattering data such as total and differential cross sections, fragmentation functions, structure functions, and polarisation measurements, from a wide range of experiments. It is compiled by the Durham Database Group (UK) with help from the COMPAS group (Russia,) and is updated at regular intervals.[copied from http://www.slac.stanford.edu/spires/hepdata/index.html] While DOE does not fund this resource, the database does contain data generated by various DOE groups. SLAC hosts the mirror of the Durham database on its website in California.

447

Reconciling the LEP and Slac Measurements of Sin^2(?_W)  

E-Print Network (OSTI)

We consider whether a discrepancy between the SLAC and LEP measurements of $\\Sw$ can be explained by new physics. We find that only the contribution of a new neutral gauge boson, $Z^\\prime$, nearly degenerate with the Z can affect the SLAC measurement while leaving the LEP observables almost unaffected. We briefly discuss possible signals for this new gauge boson, including changes in the $Z$ lineshape when measured with polarised electrons, small changes in $R_b$, $A^e_{FB}$, and larger changes in two jet and $t\\bar{t}$ production at hadron colliders.

F. Caravaglios; G. G. Ross

1994-10-19T23:59:59.000Z

448

The SLAC Polarized Electron Source and Beam for E-158  

E-Print Network (OSTI)

SLAC E-158 is making the first measurement of parity violation in Moller scattering. E-158 measures the right-left cross-section asymmetry, A_LR, in the scattering of a 45-GeV polarized electron beam off unpolarized electrons in a liquid hydrogen target. E-158 plans to measure the expected Standard Model asymmetry of ~10^-7 to an accuracy of better than 10^-8. This paper discusses the performance of the SLAC polarized electron source and beam during E-158's first physics run in April/May 2002.

T. B. Humensky

2003-01-16T23:59:59.000Z

449

RESULTS ON CHARMED BARYONS AND MESONS FROM THE SLAC-LBL MARK II DETECTOR AT SPEAR  

E-Print Network (OSTI)

1, 309 (1978). Members of the SLAC-LBL Mark II collaborationBatavia, Illinois, August 2 3 - 2 9 , 1979; SLAC-PUB-2I+I9.BARYONS AND MESONS FROM THE SLAC-LBL MARK II DETECTOR AT

Goldhaber, G.

2010-01-01T23:59:59.000Z

450

Optics Design for a Soft X-ray FEL at the SLAC A-Line  

SciTech Connect

LCLS capabilities can be significantly extended with a second undulator aiming at the soft x-ray spectrum (1-5 nm). To allow for simultaneous hard and soft x-ray operations, 14 GeV beams at the end of the LCLS accelerator can be intermittently switched into the SLAC A-line (the beam transport line to End Station A) where the second undulator may be located. In this paper, we discuss the A-line optics design for transporting the high-brightness LCLS beams using the existing tunnel. To preserve the high brightness of the LCLS beams, special attention is paid to effects of incoherent and coherent synchrotron radiation. Start-to-end simulations using realistic LCLS beam distributions are carried out.

Geng, H; Ding, Y.; Emma, P.; Huang, Z.; Nosochkov, Y.; Woodley, M.; /SLAC

2009-05-15T23:59:59.000Z

451

Ideas for Future Synchrotron Light Sources  

E-Print Network (OSTI)

the PEP storage ring at SLAC [3]. Beyond this current state-Linear Accelerator Center (SLAC) in February diffraction-on beam ix-,.rformance the SLAC linac of machine, s were

Jackson, A.

2011-01-01T23:59:59.000Z

452

Shower counters for SLAC experiments E142/E143  

SciTech Connect

The authors briefly describe the two electromagnetic calorimeters each made of 200 lead glass blocks used at SLAC to discriminate between electrons and pions and to measure electron energies. Procedures to reconstruct electron showers and to calibrate calorimeters are treated as well as the calorimeter performance.

Borel, H.; Grenier, P.; Le Meur, J. [C.E. de Saclay, Gif-sur-Yvette (France)] [and others

1995-08-01T23:59:59.000Z

453

Center for Beam Physics  

E-Print Network (OSTI)

R. Schoenlein, LBNL C.V. Shank, LBNL D. Burke, SLAC ].Dorfan, SLAC D. Hitlin, Caltech F. Dylla, CEBAF Chia-Erhroutinely used for joint LBNL-SLAC-LLNL meetings on the PEP-

Chattopadhyay, S.

2010-01-01T23:59:59.000Z

454

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

Science Conference Proceedings (OSTI)

This report contains the comprehensive summary of the work performed on the SBIR Phase II, Collaborative Visualization for Large-Scale Accelerator Electromagnetic Modeling at Kitware Inc. in collaboration with Stanford Linear Accelerator Center (SLAC). The goal of the work was to develop collaborative visualization tools for large-scale data as illustrated in the figure below. The solutions we proposed address the typical problems faced by geographicallyand organizationally-separated research and engineering teams, who produce large data (either through simulation or experimental measurement) and wish to work together to analyze and understand their data. Because the data is large, we expect that it cannot be easily transported to each team member's work site, and that the visualization server must reside near the data. Further, we also expect that each work site has heterogeneous resources: some with large computing clients, tiled (or large) displays and high bandwidth; others sites as simple as a team member on a laptop computer. Our solution is based on the open-source, widely used ParaView large-data visualization application. We extended this tool to support multiple collaborative clients who may locally visualize data, and then periodically rejoin and synchronize with the group to discuss their findings. Options for managing session control, adding annotation, and defining the visualization pipeline, among others, were incorporated. We also developed and deployed a Web visualization framework based on ParaView that enables the Web browser to act as a participating client in a collaborative session. The ParaView Web Visualization framework leverages various Web technologies including WebGL, JavaScript, Java and Flash to enable interactive 3D visualization over the web using ParaView as the visualization server. We steered the development of this technology by teaming with the SLAC National Accelerator Laboratory. SLAC has a computationally-intensive problem important to the nations scientific progress as described shortly. Further, SLAC researchers routinely generate massive amounts of data, and frequently collaborate with other researchers located around the world. Thus SLAC is an ideal teammate through which to develop, test and deploy this technology. The nature of the datasets generated by simulations performed at SLAC presented unique visualization challenges especially when dealing with higher-order elements that were addressed during this Phase II. During this Phase II, we have developed a strong platform for collaborative visualization based on ParaView. We have developed and deployed a ParaView Web Visualization framework that can be used for effective collaboration over the Web. Collaborating and visualizing over the Web presents the community with unique opportunities for sharing and accessing visualization and HPC resources that hitherto with either inaccessible or difficult to use. The technology we developed in here will alleviate both these issues as it becomes widely deployed and adopted.

William J. Schroeder

2011-11-13T23:59:59.000Z

455

THE TWO-BEAM ACCELERATOR  

E-Print Network (OSTI)

IEEE Loew, "Measurements of Gradients in the SLAC (PartI)," SLAC AP-26, Nucl. Sci. NS-30. S.F. Jacobs, M.O. Scully,1986 Linear Accel. Conf. , SLAC, Jun 2-6, 1986. R. Marks, "

Sessler, A.M.

2008-01-01T23:59:59.000Z

456

Technology Commercialization and Partnerships | CASE Accelerates ...  

The Center for Accelerator Science and ... get hands-on experience using the accelerator and reporting their results. ... R&D funding is especially important for ...

457

The LPM Effect: Comparing SLAC E-146 Data with Experiment  

E-Print Network (OSTI)

The suppression of photon bremsstrahlung due to a variety of in-medium effects is discussed. Different electrodynamic suppression effects are discussed, and compared with the related color analogs. Higher order effects are considered, and found to be important. Data from SLAC E-146 is discussed, and compared with theory. The effect of finite thickness targets is emphasized, since nuclear size is such an important limiting factor for the chromodynamics effects.

Spencer R. Klein

1998-08-05T23:59:59.000Z

458

The LPM Effect: Comparing SLAC E-146 Data with Experiment  

E-Print Network (OSTI)

The suppression of photon bremsstrahlung due to a variety of in-medium effects is discussed. Different electrodynamic suppression effects are discussed, and compared with the related color analogs. Higher order effects are considered, and found to be important. Data from SLAC E-146 is discussed, and compared with theory. The effect of finite thickness targets is emphasized, since nuclear size is such an important limiting factor for the chromodynamics effects.

Spencer R. Klein

1998-01-01T23:59:59.000Z

459

Nucleon Spin Distributions From Recent SMC, SLAC and DESY Data  

E-Print Network (OSTI)

We have extracted polarized nucleon distributions from recent data at CERN, SLAC and DESY. The flavor-dependent valence and sea quark spin distributions are determined for each experiment. The up and down distributions are comparable, but the strange sea contribution determined from different experiments do not agree, even including higher order corrections. Only experiments sensitive to the polarized gluon and sea will reconcile these differences.

Gordon P. Ramsey; Mehrdad Goshtasbpour

1996-11-02T23:59:59.000Z

460

Plasma Focusing & Dielectric Wakefield Acceleration  

NLE Websites -- All DOE Office Websites (Extended Search)

pf pf Sign In Launch the Developer Dashboard SLAC National Accelerator Laboratory DOE | Stanford | SLAC | SSRL | LCLS | AD | PPA | Photon Science | PULSE | SIMES FACET User Facility : FACET An Office of Science User Facility Search this site... Search Help (new window) Top Link Bar FACET User Facility FACET Home About FACET FACET Experimental Facilities FACET Users Research at FACET SAREC Expand SAREC FACET FAQs FACET User Facility Quick Launch FACET Users Home FACET Division ARD Home About FACET FACET News FACET Users FACET Experimental Facilities FACET Research Expand FACET Research FACET Images Expand FACET Images SAREC Expand SAREC FACET Project Site (restricted) FACET FAQs FACET Site TOC All Site Content Department of Energy Page Content Plasma Focusing & Dielectric Wakefield Acceleration

Note: This page contains sample records for the topic "accelerator center slac" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


461

Fermilab | Directorate | Fermilab Accelerator Advisory Committee  

NLE Websites -- All DOE Office Websites (Extended Search)

Advisory Committee Advisory Committee Meeting of the Fermilab Accelerator Advisory Committee February 6-8, 2013 Charge Agenda Closeout Report Final Report November 7 - 9, 2011 Charge Agenda Closeout Report Final Report Lia Merminga (TRIUMF), Chair Ilan Ben-Zvi (BNL) Wolfram Fischer (BNL) Steve Gourlay (LBNL) Kathy Harkay (ANL) Mark Hogan (SLAC) Andrew Hutton (JLAB) Peter Ostroumov (ANL) Jamie Rosenzweig (UCLA) Andrei Seryi (SLAC) Previous Meetings November 7-9, 2011 July 28-30, 2010 November 16-18, 2009 February 3-4, 2009 May 6-8,2008 August 8-10, 2007 December 4-6, 2006 May 10-12, 2006 May 10-12, 2005 November 17-19, 2004 May 10-12, 2004 November 19-21, 2003 February 4-6, 2003 May 13-15, 2002 Fermilab Accelerator Advisory Committee (AAC) Reports 18th Meeting – July 28-30, 2010 (Closeout) 17th Meeting - November 16-18, 2009

462

Compliance of SLAC_s Laser Safety Program with OSHA Requirements for the Control of Hazardous Energy  

SciTech Connect

SLAC's COHE program requires compliance with OSHA Regulation 29CFR1910.147, 'The control of hazardous energy (lockout/tagout)'. This regulation specifies lockout/tagout requirements during service and maintenance of equipment in which the unexpected energization or start up of the equipment, or release of stored energy, could cause injury to workers. Class 3B and Class 4 laser radiation must be considered as hazardous energy (as well as electrical energy in associated equipment, and other non-beam energy hazards) in laser facilities, and therefore requires careful COHE consideration. This paper describes how COHE is achieved at SLAC to protect workers against unexpected Class 3B or Class 4 laser radiation, independent of whether the mode of operation is normal, service, or maintenance.

Woods, Michael; /SLAC

2009-01-15T23:59:59.000Z

463

Measuring the Magnetic Center Behavior of an ILC Superconducting Quadrupole Prototype  

SciTech Connect

The main linacs of the proposed International Linear Collider (ILC) consist of superconducting cavities operated at 2K. The accelerating cavities are contained in a contiguous series of cryogenic modules that also house the main linac quadrupoles, thus the quadrupoles also need to be superconducting. In an early ILC design, these magnets are about 0.6 m long, have cos (2{theta}) coils, and operate at constant field gradients up to 60 T/m. In order to preserve the small beam emittances in the ILC linacs, the e+ and e- beams need to traverse the quadrupoles near their magnetic centers. A quadrupole shunting technique is used to measure the quadrupole alignment with the beams; this process requires the magnetic centers move by no more than about 5 micrometers when their strength is changed. To determine if such tight stability is achievable in a superconducting quadrupole, we at SLAC measured the magnetic center motions in a prototype ILC quadrupole built at CIEMAT in Spain. A rotating coil technique was used with a better than 0.1 micrometer precision in the relative field center position, and less than a 2 micrometer systematic error over 30 minutes. This paper describes the warm-bore cryomodule that houses the quadrupole in its Helium vessel, the magnetic center measurement system, the measured center data and strength and harmonics magnetic data.

Spencer, Cherrill M.; Adolphsen, Chris; Berndt, Martin; Jensen, David R.; Rogers, Ron; Sheppard, John C.; Lorant, Steve St; Weber, Thomas B.; Weisend, John, II; /SLAC; Brueck, Heinrich; /DESY; Toral, Fernando; /Madrid, CIEMAT

2011-02-07T23:59:59.000Z

464

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

Office of Science (SC) Website

SLAC Regional Science Bowl National Science Bowl (NSB) NSB Home About NSB High School High School Students High School Coaches High School Regionals High School Rules, Forms, and...

465

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

Office of Science (SC) Website

Fermi National Fermi National Accelerator Laboratory Laboratories 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 Policy and Evaluation Safety, Security and Infrastructure Laboratory Science Highlights Contact Information Office of Science U.S. Department of Energy 1000 Independence Ave., SW Washington, DC 20585 P: (202) 586-5430 Labs at-a-Glance: Fermi National Accelerator Laboratory Print Text Size: A A A RSS Feeds FeedbackShare Page Fermi National Accelerator Laboratory Logo Visit the Fermi National Accelerator

466

First Measurements of the Longitudinal Bunch Profile at SLAC Using Coherent Smith-Purcell Radiation at 28GeV  

E-Print Network (OSTI)

First Measurements of the Longitudinal Bunch Profile at SLAC Using Coherent Smith-Purcell Radiation at 28GeV

Blackmore, V; Doucas, G; Kimmitt, M F; Molloy, S; Ottewell, B; Perry, C; Woods, M

2008-01-01T23:59:59.000Z

467

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

Science Conference Proceedings (OSTI)

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

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

2011-05-25T23:59:59.000Z

468

Availability Performance and Considerations for LCLS X-Ray FEL at SLAC  

Science Conference Proceedings (OSTI)

The Linac Coherent Light Source (LCLS) is an X-ray Free Electron Laser (FEL) facility located at the SLAC National Accelerator Laboratory. LCLS has been in operation since spring 2009, and it has completed its 3rd user run. LCLS is the first in its class of X-ray FEL user facilities, and presents different availability challenges compared to storage ring light sources. This paper presents recent availability performance of the FEL as well as factors to consider when defining the operational availability figure of merit for user runs. During LCLS [1] user runs, an availability of 95% has been set as a goal. In run III, LCLS photon and electron beam systems achieved availabilities of 94.8% and 96.7%, respectively. The total availability goal can be distributed among subsystems to track performance and identify areas that need attention in order to maintain and improve hardware reliability and operational availability. Careful beam time accounting is needed to understand the distribution of down time. The LCLS complex includes multiple experimental hutches for X-ray science, and each user program has different requirements of a set of parameters that the FEL can be configured to deliver. Since each user may have different criteria for what is considered 'acceptable beam', the quality of the beam must be considered to determine the X-ray beam availability.

Allen, W. B.

2011-08-16T23:59:59.000Z

469

Recent Measurements And Plans for the SLAC Compton X-Ray Source  

Science Conference Proceedings (OSTI)

A compact source of monoenergetic X-rays, generated via Compton backscattering, has been developed in a collaboration between U.C Davis and SLAC. The source consists of a 5.5 cell X-band photoinjector, a 1.05 m long high gradient accelerator structure and an interaction chamber where a high power (TW), short pulse (sub-ps) infrared laser beam is brought into a nearly head-on collision with a high quality focused electron beam. Successful completion of this project will result in the capability of generating a monoenergetic X-ray beam, continuously tunable from 20 - 85 keV. We have completed a series of measurements leading up to the generation of monoenergetic X-rays. Measurements of essential electron beam parameters and the techniques used in establishing electron/photon collisions will be presented. We discuss the design of an improved interaction chamber, future electro-optic experiments using this chamber and plans for expanding the overall program to the generation of Terahertz radiation.

Vlieks, A.E.; Akre, R.; Caryotakis, G.; DeStefano, C.; Frederick, W.J.; Heritage, J.P.; Luhmann, N.C.; Martin, D.; Pellegrini, C.; /SLAC /UC, Davis /UCLA

2006-02-14T23:59:59.000Z

470

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

Office of Science (SC) Website

Thomas Jefferson Thomas Jefferson National Accelerator Facility Laboratories 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 Policy and Evaluation Safety, Security and Infrastructure Laboratory Science Highlights Contact Information Office of Science U.S. Department of Energy 1000 Independence Ave., SW Washington, DC 20585 P: (202) 586-5430 Labs at-a-Glance: Thomas Jefferson National Accelerator Facility Print Text Size: A A A RSS Feeds FeedbackShare Page Thomas Jefferson National Accelerator Facility Logo

471

Centers | ornl.gov  

NLE Websites -- All DOE Office Websites (Extended Search)

Centers Centers SHARE Centers BioEnergy Science Center (BESC) The BioEnergy Science Center (BESC) is a multi-institutional (17 partners), multidisciplinary research (biological, chemical, physical and computational sciences, mathematics and engineering) organization focused on the fundamental understanding and elimination of biomass recalcitrance. DOE Energy Frontier Research Centers The Energy Frontier Research Centers program aims to accelerate such transformative discovery, combining the talents and creativity of our national scientific workforce with a powerful new generation of tools for penetrating, understanding, and manipulating matter on the atomic and molecular scales. ORNL is also home to two DOE Energy Frontier Research Centers, the Fluid Interface, Reactions, Structures and Transport (FIRST)

472

A High Resolution Luminosity Monitor for SLAC Experiment E158  

DOE Green Energy (OSTI)

A calorimetric detector based on ionization has been employed as a low-angle luminosity monitor for the parity violation experiment E158 at SLAC. The experiment utilizes a 50 GeV polarized electron beam on a liquid hydrogen target. The detector looks at high energy Mott and Moller scattered electrons, with a per pulse flux of 4 x 10{sup 8} particles. This large signal allows the device to serve the dual role of monitoring target density fluctuations, as well as detecting false asymmetries. In the first physics run of the experiment, the detector has achieved a per-pulse intensity asymmetry resolution of 170 parts per million. The linearity of the device also has been verified to {<=} 1%.

Jones, Gary M

2003-09-18T23:59:59.000Z

473

The polarized electron beam for the SLAC Linear Collider  

E-Print Network (OSTI)

The SLAC Linear Collider has been colliding a polarized electron beam with an unpolarized positron beam at the Z^0 resonance for the SLD experiment since 1992. An electron beam polarization of close to 80% has been achieved for the experiment at luminosities up to 8x10^29 cm^-2 s^-1. This is the world's first and only linear collider, and is a successful prototype for the next generation of high energy electron linear colliders. This paper discusses polarized beam operation for the SLC, and includes aspects of the polarized source, spin transport and polarimetry. Presented at the 12th International Symposium on High Energy Spin Physics held at Amsterdam, The Netherlands September 10-14, 1996.

M. Woods

1996-11-09T23:59:59.000Z

474

Helicity-Correlated Systematics for SLAC Experiment E158  

DOE Green Energy (OSTI)

Experiment E158 at SLAC will make the first measurement of parity violation in Moeller scattering. The left-right cross-section asymmetry in the elastic scattering of a 45 GeV polarized electron beam with unpolarized electrons in a liquid hydrogen target will be measured to an accuracy of better than 10{sup -8} with the expected Standard Model asymmetry being approximately 10{sup -7}. Because helicity-correlated (left-right) charge and position asymmetries in the electron beam can give rise to systematic errors in the measurement, great care must be given to beam monitoring and control. We have developed beam current monitors that measure the charge per pulse at the 3 x 10{sup -5} level and RF cavity beam position monitors that measure the position per pulse to 1 {micro}m, which should allow precisions of 1 ppb and 1 nm for the final integrated charge and position asymmetries, respectively. In addition, since most helicity-correlated systematics in the electron beam can be traced back to the laser that drives the photoemission from the GaAs source cathode, we first use careful control of laser beam polarization, point-to-point imaging, and other techniques to minimize systematics. We also provide the capability of modulating in a helicity-correlated way the laser beam's intensity and position as it strikes the photocathode, allowing the implementation of active feedbacks to ensure that the average charge and position asymmetries integrate close to zero over the course of the experiment. We present this system of precision beam monitoring and control and report on its performance during a recent commissioning run, T-437 at SLAC, which demonstrated charge and position asymmetry precisions of 12 ppb and 2 nm, respectively.

Mastromarino, Peter

2001-12-10T23:59:59.000Z

475

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

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Particle Accelerators, Lasers and Discovery Science, May 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 pulse. | Photo by Brad Plummer, SLAC. 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 pulse. | Photo by

476

accelerators for ATI  

NLE Websites -- All DOE Office Websites (Extended Search)

Building Accelerator Analogs Building Accelerator Analogs Some QuarkNet centers have built "accelerators." No, they are not real but can be used as analogs to real particle accelerators. The real learning comes, of course, when you plan and experiment on your own, but this may give you some starting points. Things to Think About What are your objectives? To make an analogy for particle accelerators? To use classical physics qualitatively? To use classical physics quantitatively? To measure forces, speed, etc.? _______________ Who is your target audience— in an Associate Teacher Institute or their students or both? What do the participants need to know before beginning? Jawbreaker Accelerator Pressurized gas shoots jawbreakers through PVC pipe into a fixed target (brick) or into each other. The original speeds and masses are measured as are those of the resulting particles.

477

Argonne Accelerator Institute  

NLE Websites -- All DOE Office Websites (Extended Search)

Mission Mission The mission of the Argonne Accelerator Institute is centered upon the following related goals: Locate next generation accelerator facilities in Northern Illinois Advance accelerator technology Oversee a selected, strategic, lab-wide, and acclaimed accelerator R&D portfolio In order to accomplish the above goals, the institute has established five objectives. These are coupled to programmatic objectives, and are dependent on each other, but they serve to identify important areas for the institute to focus its activities. Educate the "next generation" of accelerator physicists and engineers Work with area Universities to establish Joint Appointments and Adjunct Professorships Identify students Provide research opportunities at Argonne Work with the US Particle Accelerator School

478

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

SciTech Connect

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

Deken, Jean Marie; /SLAC

2006-03-10T23:59:59.000Z

479

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

Science Conference Proceedings (OSTI)

The US Department of Energy (DOE) Office of Biological and Environmental Research (OBER), within the Office of Science (SC), proposes to add a Field Research Center (FRC) component to the existing Natural and Accelerated Bioremediation Research (NABIR) Program. The NABIR Program is a ten-year fundamental research program designed to increase the understanding of fundamental biogeochemical processes that would allow the use of bioremediation approaches for cleaning up DOE's contaminated legacy waste sites. An FRC would be integrated with the existing and future laboratory and field research and would provide a means of examining the fundamental biogeochemical processes that influence bioremediation under controlled small-scale field conditions. The NABIR Program would continue to perform fundamental research that might lead to promising bioremediation technologies that could be demonstrated by other means in the future. For over 50 years, DOE and its predecessor agencies have been responsible for the research, design, and production of nuclear weapons, as well as other energy-related research and development efforts. DOE's weapons production and research activities generated hazardous, mixed, and radioactive waste products. Past disposal practices have led to the contamination of soils, sediments, and groundwater with complex and exotic mixtures of compounds. This contamination and its associated costs and risks represents a major concern to DOE and the public. The high costs, long duration, and technical challenges associated with remediating the subsurface contamination at DOE sites present a significant need for fundamental research in the biological, chemical, and physical sciences that will contribute to new and cost-effective solutions. One possible low-cost approach for remediating the subsurface contamination of DOE sites is through the use of a technology known as bioremediation. Bioremediation has been defined as the use of microorganisms to biodegrade or biotransform hazardous organic contaminants to environmentally safe levels in soils, subsurface materials, water, sludges, and residues.. While bioremediation technology is promising, DOE managers and non-DOE scientists have recognized that the fundamental scientific information needed to develop effective bioremediation technologies for cleanup of the legacy waste sites is lacking in many cases. DOE believes that field-based research is needed to realize the full potential of bioremediation. The Department of Energy faces a unique set of challenges associated with cleaning up waste at its former weapons production and research sites. These sites contain complex mixtures of contaminants in the subsurface, including radioactive compounds. In many cases, the fundamental field-based scientific information needed to develop safe and effective remediation and cleanup technologies is lacking. DOE needs fundamental research on the use of microorganisms and their products to assist DOE in the decontamination and cleanup of its legacy waste sites. The existing NABIR program to-date has focused on fundamental scientific research in the laboratory. Because subsurface hydrologic and geologic conditions at contaminated DOE sites cannot easily be duplicated in a laboratory, however, the DOE needs a field component to permit existing and future laboratory research results to be field-tested on a small scale in a controlled outdoor setting. Such field-testing needs to be conducted under actual legacy waste field conditions representative of those that DOE is most in need of remediating. Ideally, these field conditions should be as representative as practicable of the types of subsurface contamination conditions that resulted from legacy wastes from the nuclear weapons program activities. They should also be representative of the types of hydrologic and geologic conditions that exist across the DOE complex.

N /A

2000-04-18T23:59:59.000Z

480

High transformer ratio drive beams for wakefield accelerator studies  

Science Conference Proceedings (OSTI)

For wakefield based acceleration schemes, use of an asymmetric (or linearly ramped) drive bunch current profile has been predicted to enhance the transformer ratio and generate large accelerating wakes. We discuss plans and initial results for producing such bunches using the 20 to 23 GeV electron beam at the FACET facility at SLAC National Accelerator Laboratory and sending them through plasmas and dielectric tubes to generate transformer ratios greater than 2 (the limit for symmetric bunches). The scheme proposed utilizes the final FACET chicane compressor and transverse collimation to shape the longitudinal phase space of the beam.

England, R. J.; Ng, C.-K.; Frederico, J.; Hogan, M. J.; Litos, M.; Muggli, P.; Joshi, C.; An, W.; Andonian, G.; Mori, W.; Lu, W. [SLAC National Accelerator Laboratory, Menlo Park, CA 94025 (United States); Max Planck Institute for Physics, 80805 Munich (Germany); University of California Los Angeles, Los Angeles, CA 90095 (United States); Tsinghua University, Beijing (China)

2012-12-21T23:59:59.000Z

Note: This page contains sample records for the topic "accelerator center slac" from the National Library of EnergyBeta (NLEBeta).
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481

SLAC National Accelerator Laboratory - BaBar Data Hint at Cracks...  

NLE Websites -- All DOE Office Websites (Extended Search)

Press Release Archive BaBar Data Hint at Cracks in the Standard Model June 18, 2012 Menlo Park, Calif. - Recently analyzed data from the BaBar experiment may suggest possible flaws...

482

Argonne Accelerator Institute (AAI)  

NLE Websites -- All DOE Office Websites (Extended Search)

X-band structures in collaboration with NRL and SLAC. * Schottky-enabled photoelectron production and its application to RF breakdown study * Theory and simulation study of...

483

PARTICLE ACCELERATOR  

DOE Patents (OSTI)

ABS>A combination of two accelerators, a cyclotron and a ring-shaped accelerator which has a portion disposed tangentially to the cyclotron, is described. Means are provided to transfer particles from the cyclotron to the ring accelerator including a magnetic deflector within the cyclotron, a magnetic shield between the ring accelerator and the cyclotron, and a magnetic inflector within the ring accelerator.

Teng, L.C.

1960-01-19T23:59:59.000Z

484

Can Accelerators Accelerate Learning?  

Science Conference Proceedings (OSTI)

The 'Young Talented' education program developed by the Brazilian State Funding Agency (FAPERJ)[1] makes it possible for high-schools students from public high schools to perform activities in scientific laboratories. In the Atomic and Molecular Physics Laboratory at Federal University of Rio de Janeiro (UFRJ), the students are confronted with modern research tools like the 1.7 MV ion accelerator. Being a user-friendly machine, the accelerator is easily manageable by the students, who can perform simple hands-on activities, stimulating interest in physics, and getting the students close to modern laboratory techniques.

Santos, A. C. F.; Fonseca, P.; Coelho, L. F. S. [Instituto de Fisica, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil, Caixa Postal 68528, 21941-972 (Brazil)

2009-03-10T23:59:59.000Z

485

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

Office of Science (SC) Website

SLAC Regional High School SLAC Regional High School Science Bowl National Science Bowl® (NSB) NSB Home About High School High School Students High School Coaches High School Regionals High School Rules, Forms, and Resources Middle School Attending National Event Volunteers 2013 Competition Results News Media WDTS Home Contact Information National Science Bowl® U.S. Department of Energy SC-27/ Forrestal Building 1000 Independence Ave., SW Washington, DC 20585 P: 202-586-6702 E: National.Science.Bowl@science.doe.gov California Regions SLAC Regional High School Science Bowl Print Text Size: A A A RSS Feeds FeedbackShare Page Regional Coordinator Information Name: Farah Rahbar Email: farah.rahbar@slac.stanford.edu Regional Event Information Date: Saturday, February 8, 2014 Maximum Number of Teams: 18

486

SLAC Regional High School Science Bowl| U.S. DOE Office of Science...  

Office of Science (SC) Website

SW Washington, DC 20585 P: 202-586-6702 E: National.Science.Bowl@science.doe.gov California Regions SLAC Regional High School Science Bowl Print Text Size: A A A RSS Feeds...

487

First U.S. Web Site: The Early World Wide Web at SLAC  

NLE Websites -- All DOE Office Websites (Extended Search)

Archives and History Office Special Collection: FIRST U.S. WEB SITE: Documentation of the Early Web at SLAC (1991-1994) Archives and History Office blue line Early Chronology First...

488

The design of a semi-custom intergrated circuit for the SLAC SLC timing control system  

Science Conference Proceedings (OSTI)

A semi-custom (gate array) integrated circuit has been designed for use in the SLAC Linear Collider timing and control system. The design process and SLAC's experiences during the phases of the design cycle are described. Issues concerning the partitioning of the design into semi-custom and standard components are discussed. Functional descriptions of the semi-custom integrated circuit and the timing module in which it is used are given.

Linstadt, E.

1985-02-01T23:59:59.000Z

489

PARTICLE ACCELERATOR  

DOE Patents (OSTI)

A fixed-field alternating gradient accelerator for simultaneous acceleration of two particle beams in opposite directions is described. (T.R.H.)

Ohkawa, T.

1959-06-01T23:59:59.000Z

490

Involvement of the Rab27 binding protein Slac2c/MyRIP in insulin exocytosis  

E-Print Network (OSTI)

Rab27a is a GTPase associated with insulin-containing secretory granules of pancreatic ?-cells. Selective reduction of Rab27a expression by RNA interference did not alter granule distribution and basal secretion but impaired exocytosis triggered by insulin secretagogues. Screening for potential effectors of the GTPase revealed that the Rab27a-binding protein Slac2c/MyRIP is associated with secretory granules of ?-cells. Attenuation of Slac2c/MyRIP expression by RNA interference did not modify basal secretion but severely impaired hormone release in response to secretagogues. Although ?-cells express Myosin-Va, a potential partner of Slac2c/MyRIP, no functional link between the two proteins could be demonstrated. In fact, overexpression of the Myosin-Va binding domain of Slac2c/MyRIP did not affect granule localization and hormone exocytosis. In contrast, overexpression of the actin-binding domain of Slac2c/MyRIP led to a potent inhibition of exocytosis without detectable alteration in granule distribution. This effect was prevented by point mutations that abolish actin binding. Taken together our data suggest that Rab27a and Slac2c/MyRIP are part of a complex mediating the interaction of secretory granules with cortical actin cytoskeleton and participate to the regulation of the final steps of insulin exocytosis.

Laurent Waselle; Mitsunori Fukuda; Mariella Iezzi; Aziz El-amraoui; Christine Petit; Romano Regazzi

2003-01-01T23:59:59.000Z

491

Accelerator and rf system development for NLC  

Science Conference Proceedings (OSTI)

An experimental station for an X-band Next Linear Collider has been constructed at SLAC. This station consists of a klystron and modulator, a low-loss waveguide system for rf power distribution, a SLED II pulse-compression and peak-power multiplication system, acceleration sections and beam-line components (gun, prebuncher, preaccelerator, focussing elements and spectrometer). An extensive program of experiments to evaluate the performance of all components is underway. The station is described in detail in this paper, and results to date are presented.

Vlieks, A.E.; Callin, R.; Deruyter, H. [Stanford Linear Accelerator Center, Menlo Park, CA (United States)] [and others

1993-04-01T23:59:59.000Z

492

Some aspects of superconducting accelerator design  

SciTech Connect

The performance of an accelerator can be characterized by the efficiency with which electrical energy, the minimumm energy needed to generate a given beam voltage. The current accelerator improvement program at SLAC aims at raising the beam voltage to 50 GV which will use 240 klystrons each capable of producing a pulse 5 ..mu..s in length at a peak power of 36 MW. The Linear Collider requires 50 MW klystrons to achieve 60 GV which will raise the concomittant power consumption to 32.3 MW. We show that with superconducting elements we can increase the rf and ac conversion efficiencies and achieve the necessary 50 GV using only 1/3 of the present power requirements, provided that we exclude CW operation. We will further demonstrate that this increase in efficiency is crucial and highly significant in the design of a proposed 1000 GV linear accelerator.

Farkas, Z.D.; St. Lorant, S.J.

1982-11-01T23:59:59.000Z

493

EA-1904: Linac Coherent Light Source II at Stanford Linear Accelerator  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

4: Linac Coherent Light Source II at Stanford Linear 4: Linac Coherent Light Source II at Stanford Linear Accelerator Laboratory, San Mateo, California EA-1904: Linac Coherent Light Source II at Stanford Linear Accelerator Laboratory, San Mateo, California Summary This EA evaluates the environmental impacts of the proposed construction of the Linac Coherent Light Source at SLAC National Accelerator Laboratory, Menlo Park, California. Public Comment Opportunities None available at this time. For more information, contact: Mr. Dave Osugi DOE SLAC Site Office 2575 Sand Hill Road, MS8A Menlo Park, CA 94025 Electronic mail: dave.osugi@sso.science.doe.gov Documents Available for Download March 7, 2012 EA-1904: Finding of No Significant Impact Linac Coherent Light Source II at Stanford Linear Accelerator Laboratory, San Mateo, CA

494

EA-1904: Linac Coherent Light Source II at Stanford Linear Accelerator  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

04: Linac Coherent Light Source II at Stanford Linear 04: Linac Coherent Light Source II at Stanford Linear Accelerator Laboratory, San Mateo, California EA-1904: Linac Coherent Light Source II at Stanford Linear Accelerator Laboratory, San Mateo, California Summary This EA evaluates the environmental impacts of the proposed construction of the Linac Coherent Light Source at SLAC National Accelerator Laboratory, Menlo Park, California. Public Comment Opportunities None available at this time. For more information, contact: Mr. Dave Osugi DOE SLAC Site Office 2575 Sand Hill Road, MS8A Menlo Park, CA 94025 Electronic mail: dave.osugi@sso.science.doe.gov Documents Available for Download March 7, 2012 EA-1904: Finding of No Significant Impact Linac Coherent Light Source II at Stanford Linear Accelerator Laboratory, San Mateo, CA

495

Thomas Jefferson National Accelerator Facility Site Tour - Accelerator Map  

NLE Websites -- All DOE Office Websites (Extended Search)

Counting House Free Electron Accelerator Facility Machine Control Center Physics Storage Building North Linear Accelerator South Linear Accelerator VEPCO Substation Machine Control Center Annex Machine Control Center Annex II North Access Building South Access Building Central Helium Liquefier Injector Hall A Truck Ramp Hall B Truck Ramp Hall C Truck Ramp Experimental Hall A Experimental Hall B Experimental Hall C East Arc West Arc Counting House Free Electron Accelerator Facility Machine Control Center Physics Storage Building North Linear Accelerator South Linear Accelerator VEPCO Substation Machine Control Center Annex Machine Control Center Annex II North Access Building South Access Building Central Helium Liquefier Injector Hall A Truck Ramp Hall B Truck Ramp Hall C Truck Ramp Experimental Hall A Experimental Hall B Experimental Hall C East Arc West Arc Science Education Jefferson Lab Jefferson Lab Home Search Jefferson Lab Contact Jefferson Lab Science Education Home Teacher Resources Student Zone Games and Puzzles Science Cinema Programs and Events Search Education Privacy and Security Notice Jefferson Lab Site Tour Guided Tour Site Map Accelerator Area Map Administrative Area Map Tour Index

496

The Cryogenic System for the SLAC E158 Experiment  

DOE Green Energy (OSTI)

E158 is a fixed target experiment at SLAC in which high energy (up to 48 GeV) polarized electrons are scattered off the unpolarized electrons in a 1.5 m long liquid hydrogen target. The total volume of liquid hydrogen in the system is 55 l. The beam can deposit as much as 700 W into the liquid hydrogen. Among the requirements for the system are: that density fluctuations in the liquid hydrogen be kept to a minimum, that the target can be moved out of the beam line while cold and replaced to within 2 mm and that the target survive lifetime radiation doses of up to 1 x 10{sup 6} GY. The cryogenic system for the experiment consists of the target itself, the cryostat containing the target, a refurbished CTI 4000 refrigerator providing more than 1 kW of cooling at 20 K and associated transfer lines and valve boxes. This paper discusses the requirements, design, construction, testing and operation of the cryogenic system. The unique features of the design associated with hydrogen safety and the high radiation field in which the target resides are also covered.

Weisend, John G

2001-07-12T23:59:59.000Z

497

SLAC P2 Marx Control System and Regulation Scheme  

Science Conference Proceedings (OSTI)

The SLAC P2 MARX Modulator consists of 32 cells charged in parallel by a -4 kV supply and discharged in series to provide a -120 kV 140 amp 1.7 millisecond pulse. Each cell has a 350 uF main storage capacitor. The voltage on the capacitor will droop approximately 640 volts during each pulse. Each cell will have a boost supply that can add up to 700 V to the cell output. This allows the output voltage of the cell to remain constant within 0.1% during the pulse. The modulator output voltage control is determined by the -4 kV charging voltage. A voltage divider will measure the modulator voltage on each pulse. The charging voltage will be adjusted by the data from previous pulses to provide the desired output. The boost supply in each cell consists of a 700 V buck regulator in series with the main capacitor. The supply uses a lookup table for PWM control. The lookup table is calculated from previous pulse data to provide a constant cell output. The paper will describe the modulator and cell regulation used by the MARX modulator. Measured data from a single cell and three cell string will be included.

MacNair, David; Kemp, Mark A.; Macken, Koen; Nguyen, Minh N.; Olsen, Jeff; /SLAC

2011-05-20T23:59:59.000Z

498

Acceleration Mechanisms  

E-Print Network (OSTI)

Glossary I. Background and context of the subject II. Stochastic acceleration III. Resonant scattering IV. Diffusive shock acceleration V. DSA at multiple shocks VI. Applications of DSA VII. Acceleration by parallel electric fields VIII. Other acceleration mechanisms IX. Future directions X. Appendix: Quasilinear equations XI. Bibliography

Melrose, D B

2009-01-01T23:59:59.000Z

499

Index of /lcls/workshops/2004-09-22_diag_comm  

NLE Websites -- All DOE Office Websites (Extended Search)

LCLS Diagnostics and Commissioning Workshop Stanford Linear Accelerator Center Location: Redwood Room CD, SLAC September 22-23, 2004 A two-day workshop will held at SLAC to...

500

Total Estimated Contract Cost: Performance Period Total Fee Paid  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

357,223 597,797 894,699 EM Contractor Fee Site: Stanford Linear Accelerator Center (SLAC) Contract Name: SLAC Environmental Remediation December 2012 1,516,646 Fee Available...