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1

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

2

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

3

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

4

Brad Ullrick | Argonne National Laboratory  

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

Korean, Norwegian, Romanian, Serbian, Spanish, Tagalog (Filipino), Tamil, Telugu, Thai, Turkish View All Experts Brad Ullrick Intellectual Property and Business...

5

SLAC  

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

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

6

Plummer Biomass Facility | Open Energy Information  

Open Energy Info (EERE)

Page Page Edit with form History Facebook icon Twitter icon » Plummer Biomass Facility Jump to: navigation, search Name Plummer Biomass Facility Facility Plummer Sector Biomass Owner Wood Power Location Plummer, Idaho Coordinates 47.3351803°, -116.8885094° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":47.3351803,"lon":-116.8885094,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

7

Brad Foote Gear Works | Open Energy Information  

Open Energy Info (EERE)

Brad Foote Gear Works Brad Foote Gear Works Jump to: navigation, search Name Brad Foote Gear Works Place Cicero, Illinois Zip 60804-1404 Sector Wind energy Product Gearing systems manufacturer making systems for wind energy, power generation, and oil field equipment in addition to other industries. Coordinates 43.177106°, -76.082399° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":43.177106,"lon":-76.082399,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

8

SLAC National Accelerator Laboratory - About SLAC  

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

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...

9

Brad Thompson Company | Open Energy Information  

Open Energy Info (EERE)

Logo: Brad Thompson Company Name Brad Thompson Company Address 12517 131st Ct NE Place Kirkland, Washington Zip 98034 Region Pacific Northwest Area Number of employees 1-10 Year founded 1978 Phone number 4258255800 Website http://www.bradtco.com Notes Energy developer Coordinates 47.7126882°, -122.1662162° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":47.7126882,"lon":-122.1662162,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

10

Scientific Applications: BRAD: the brookhaven raster display  

Science Conference Proceedings (OSTI)

A multiconsole computer display system has been designed that provides very rich displays at low unit cost. Each BRAD (Brookhaven RAster Display) console can plot tens of thousands of points, or up to 4000 characters at 30 frames per second. After an ... Keywords: TV display console, TV graphics terminal, computer display, computer graphics, computer raster display, digital TV display, inexpensive graphic terminal, multiconsole computer graphics, swept raster TV computer display, swept raster computer display

D. Ophir; S. Rankowitz; B. J. Shepherd; R. J. Spinrad

1968-06-01T23:59:59.000Z

11

City of Plummer, Idaho (Utility Company) | Open Energy Information  

Open Energy Info (EERE)

Plummer, Idaho (Utility Company) Plummer, Idaho (Utility Company) Jump to: navigation, search Name City of Plummer Place Idaho Utility Id 15297 Utility Location Yes Ownership M NERC Location WECC NERC WECC Yes Activity Distribution Yes References EIA Form EIA-861 Final Data File for 2010 - File1_a[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Utility Rate Schedules Grid-background.png Industrial Industrial Large Commercial Commercial Residential Residential Small Commercial Commercial Average Rates Residential: $0.0719/kWh Commercial: $0.0614/kWh Industrial: $0.0440/kWh References ↑ "EIA Form EIA-861 Final Data File for 2010 - File1_a" Retrieved from "http://en.openei.org/w/index.php?title=City_of_Plummer,_Idaho_(Utility_Company)&oldid=410122

12

SLAC National Accelerator Laboratory - SLAC Today  

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

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...

13

SLAC National Accelerator Laboratory - SLAC Overview  

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

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...

14

SLAC National Accelerator Laboratory -  

NLE Websites -- All DOE Office Websites

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

15

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...

16

SLAC National Accelerator Laboratory - Visiting SLAC  

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

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...

17

SLAC National Accelerator Laboratory - Community at SLAC  

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

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...

18

SLAC National Accelerator Laboratory - SLAC Tours  

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

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...

19

SLAC National Accelerator Laboratory - SLAC News Center  

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

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...

20

SLAC National Accelerator Laboratory - SLAC Researcher Lauded...  

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

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...

Note: This page contains sample records for the topic "brad plummer 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

SBOT TEXAS PANTEX PLANT POC Brad Beck Telephone  

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

TEXAS TEXAS PANTEX PLANT POC Brad Beck Telephone (806) 477-6192 Email bbrack@pantex.com ADMINISTATIVE / WASTE / REMEDIATION Facilities Support Services 561210 Executive Search Services 561312 Temporary Help Services 561320 Document Preparation Services 561410 All Other Business Support Services 561499 Travel Agencies 561510 Security Systems Services (except Locksmiths) 561621 Landscaping Services 561730 Carpet and Upholstery Cleaning Services 561740 Other Services to Buildings and Dwellings 561790 Solid Waste Collection 562111 Hazardous Waste Collection 562112 Other Waste Collection 562119 Hazardous Waste Treatment and Disposal 562211 Solid Waste Landfill 562212 Solid Waste Combustors and Incinerators 562213 Other Nonhazardous Waste Treatment and Disposal 562219 Remediation Services 562910 Materials Recovery Facilities

22

SLAC National Accelerator Laboratory - SLAC History  

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

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...

23

SLAC National Accelerator Laboratory - Safety at SLAC  

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

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...

24

SLAC National Accelerator Laboratory - Careers at SLAC  

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

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...

25

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...

26

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...

27

SLAC National Accelerator Laboratory - SLAC National Accelerator...  

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

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...

28

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...

29

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...

30

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...

31

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...

32

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...

33

SLAC National Accelerator Laboratory - SLAC Physicist Receives...  

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

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...

34

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...

35

SLAC National Accelerator Laboratory - Doing Business with SLAC  

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

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...

36

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

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

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...

37

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...

38

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...

39

Estimating the Remaining Useful Life of Residential Cory Welch and Brad Rogers, Navigant Consulting, Inc.  

E-Print Network (OSTI)

Estimating the Remaining Useful Life of Residential Appliances Cory Welch and Brad Rogers, Navigant. This paper describes a methodology for estimating the RUL of residential technologies using mortality data is that Weibull shape factors for many residential appliances were found to fall within a tight range

40

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...

Note: This page contains sample records for the topic "brad plummer 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

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,...

42

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

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

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:...

43

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...

44

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

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

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...

45

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

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

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...

46

What is SLAC National Accelerator  

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

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...

47

LINX Test Facility at SLAC  

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

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...

48

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

49

Brad Dinardo  

Science Conference Proceedings (OSTI)

... Hometown: Huntington, PA I am working with Dr. Calvin Chan and my project is titled: Fabrication of Organic Photovoltaics by Spray Deposition. *. ...

2010-10-05T23:59:59.000Z

50

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

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

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

51

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.

52

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

53

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...

54

SLAC National Accelerator Laboratory - SLAC Public Lecture Series  

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

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...

55

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

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

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 &...

56

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

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

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...

57

10 Questions for a Physicist: Uwe Bergmann | Department of Energy  

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

Physicist: Uwe Bergmann Physicist: Uwe Bergmann 10 Questions for a Physicist: Uwe Bergmann June 23, 2011 - 1:55pm Addthis Uwe Bergmann | Photo Courtesy of Brad Plummer, SLAC Uwe Bergmann | Photo Courtesy of Brad Plummer, SLAC Niketa Kumar Niketa Kumar Public Affairs Specialist, Office of Public Affairs What are the key facts? Uwe Bergmann works with the world's first free electron x-ray laser to make atomic resolution movie of photosynthesis -- how sunlight splits water into oxygen. He used synchotron x-rays to view the plumage of one of the most iconic fossils, Archaeopteryx, the 150-million-year-old ancestor of modern birds, as well as uncovering some of Archimedes' original writings. While officially billed as a physicist at SLAC National Accelerator Laboratory, our latest 10 Questions guest may be more aptly titled a

58

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...

59

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...

60

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...

Note: This page contains sample records for the topic "brad plummer 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 - Accelerators and Society  

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

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...

62

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

63

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

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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...

64

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...

65

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...

66

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...

67

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

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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...

68

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...

69

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...

70

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...

71

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

72

SSRL in SLAC Today | Stanford Synchrotron Radiation Lightsource  

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

73

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...

74

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,...

75

SLAC National Accelerator Laboratory - Transportation Options  

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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...

76

SLAC National Accelerator Laboratory - Media Resources  

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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...

77

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...

78

SLAC Linac Coherent Light Source User Site  

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

79

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 ...

80

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.

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81

SLAC Lightsource User Access Guidelines and Agreement  

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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

82

HEP-Req_SLAC.ppt  

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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)

83

SLAC Dosimeter / ID Request Form A  

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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

84

Archives and History Office: SLAC Nobel Prizes  

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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)

85

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...

86

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...

87

HELICAL UNDULATOR FOR TEST AT SLAC  

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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...

88

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...

89

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...

90

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...

91

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...

92

SLAC National Accelerator Laboratory - Panofsky Prize Honors...  

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

93

SLAC National Accelerator Laboratory - Experiment Finds Ulcer...  

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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...

94

SLAC National Accelerator Laboratory - Roger Blandford Receives...  

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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...

95

SLAC National Accelerator Laboratory - Site Index  

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

96

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:...

97

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...

98

SLAC National Accelerator Laboratory - Surprising Competition...  

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

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...

99

SLAC National Accelerator Laboratory - Speakers Bureau  

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

100

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...

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they are not comprehensive nor are they the most current set.
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to obtain the most current and comprehensive results.


101

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...

102

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...

103

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...

104

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...

105

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...

106

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...

107

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...

108

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...

109

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...

110

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...

111

SLAC National Accelerator Laboratory - Simple Wavelength Detector...  

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

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...

112

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...

113

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,...

114

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...

115

SLAC National Accelerator Laboratory - Annual Synchrotron Award...  

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

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...

116

SLAC National Accelerator Laboratory - Berkeley Lab Director...  

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

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...

117

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...

118

SLAC National Accelerator Laboratory - 2013 News Features  

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

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...

119

SLAC National Accelerator Laboratory - Physics Society Honors...  

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

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...

120

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

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

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...

Note: This page contains sample records for the topic "brad plummer 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.


121

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

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

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...

122

servation of exhibits at SLAC and  

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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-

123

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

124

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

125

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

126

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

127

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

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

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...

128

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...

129

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...

130

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

131

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.

132

Brad Henry Governor  

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

(H.R. 1) (ARRA), I am providing the following assurances. I have written to our public utility commission and requested that they consider additional actions to promote energy...

133

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

134

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

135

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

136

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

137

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

138

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

139

Recent News from the National Labs | Department of Energy  

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

15, 2012 15, 2012 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. #LabChat: Particle Accelerators, Lasers and Discovery Science, May 17 at 1pm EST #LabChat kicks off May 17, 1 p.m. EST with atom smashers and laser scientists from Fermi National Accelerator Lab, Thomas Jefferson National Accelerator Lab, and SLAC National Accelerator Lab. May 14, 2012 Lab Breakthrough: Fermilab Accelerator Technology Fermilab scientists developed techniques to retrofit some of the 30,000 particle accelerators in use around the world to make them more efficient

140

Protein Puzzles and Scientific Solutions  

Office of Science (SC) Website

Articles » 2014 » Protein Articles » 2014 » Protein Puzzles and Scientific Solutions News Featured Articles 2014 2013 2012 2011 2010 2009 2008 2007 2006 2005 Science Headlines Presentations & Testimony News Archives Contact Information Office of Science U.S. Department of Energy 1000 Independence Ave., SW Washington, DC 20585 P: (202) 586-5430 01.06.14 Protein Puzzles and Scientific Solutions Researchers at SLAC National Accelerator Laboratory solve fiendishly complicated structures using X-ray savvy and serious computing power. Print Text Size: A A A Subscribe FeedbackShare Page Click to enlarge photo. Enlarge Photo The Coherent X-ray Imaging experimental station at SLAC's Linac Coherent Light Source. Photo courtesy of Brad Plummer/SLAC In crystallography experiments at the Coherent X-ray Imaging experimental

Note: This page contains sample records for the topic "brad plummer slac" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
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141

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...

142

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

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

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...

143

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

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

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...

144

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

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

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

145

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

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

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...

146

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.

147

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,...

148

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

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

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...

149

SLAC National Accelerator Laboratory - X-ray Science  

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

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

150

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...

151

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

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

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...

152

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

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

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...

153

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...

154

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

155

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

156

Microsoft PowerPoint - 11_Steven Sherman and Brad Patton_NMMSS_2013_Presentation_Cf252_Closeout Rev 1.ppt [Compatibility Mode]  

National Nuclear Security Administration (NNSA)

Closeout of the Cf-252 Closeout of the Cf-252 Loan/Lease Program Steven Sherman Brad D. Patton Oak Ridge National Laboratory Preview  Introduction  Program History  Current State  Desired End State  Accomplishments  Path Forward  Summary 2 Introduction  Californium-252 - First isolated in 1952 in Ivy-Mike explosion - 2.645 y half-life - 2.3x10 6 n/μg/s  ORNL and RIAR are the only producers  ORNL provides about 70% of the world's Cf-252 3 Introduction  Packaged in sealed containers  Used as neutron sources - Radiography - Well logging - Nuclear reactor start-up - Instrument calibration - Cancer therapy - Prompt gamma neutron activation analysis (PGNAA) - Education 4 Introduction  Cf-252 Loan/Lease Program - Program to allow low-cost access by government agencies, qualified government contractors, and medical centers to

157

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

158

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

159

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

160

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

Note: This page contains sample records for the topic "brad plummer 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.


161

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

162

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

163

SLAC Library - Online Particle Physics Information  

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

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

164

Photon Science : SLAC National Accelerator Laboratory  

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

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

165

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

166

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

167

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

168

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

169

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

170

SLAC National Accelerator Laboratory - FACET Prepares to Shine  

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

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...

171

SLAC National Accelerator Laboratory - 2013 Press Release Archive  

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

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...

172

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

173

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

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

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...

174

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

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

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...

175

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

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

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...

176

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

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

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,...

177

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

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

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...

178

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

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

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...

179

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

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

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...

180

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

Note: This page contains sample records for the topic "brad plummer 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 - BaBar Searches for New...  

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

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...

182

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

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

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...

183

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

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

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...

184

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

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

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...

185

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

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

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....

186

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

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

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...

187

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

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

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...

188

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

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

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...

189

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

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

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...

190

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

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

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...

191

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

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

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...

192

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.

193

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

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

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....

194

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

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

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...

195

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

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

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...

196

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

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

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...

197

Recent News from the National Labs | Department of Energy  

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

24, 2011 24, 2011 Investing in a New Era of Manufacturing Technology The Energy Department will be investing up to $120 million over three years in the development of transformational manufacturing technologies and innovative materials that could enable industrial facilities to dramatically increase their energy efficiency. June 23, 2011 Uwe Bergmann | Photo Courtesy of Brad Plummer, SLAC 10 Questions for a Physicist: Uwe Bergmann How can we better use sunlight to create new fuels? SLAC National Accelerator Lab physicist Uwe Bergmann is helping answer this by using the world's first free electron x-ray laser to make an atomic resolution movie of photosynthesis -- how "tiny machines" in plants and algae use sunlight to split water into oxygen. June 22, 2011

198

#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

199

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

200

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

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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

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

203

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.

204

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

205

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

206

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

207

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

208

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

209

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

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

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.

210

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

211

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

212

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

213

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

214

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

215

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

216

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.

217

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

218

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

219

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

220

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

Note: This page contains sample records for the topic "brad plummer 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.


221

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

222

Charge Density Wave Compounds  

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

Fisher Research Group Fisher Research Group Layered Chalcogenides 29 February 2008 Controlling the Wave by Brad Plummer, SLAC Communications Stanford University researchers working in part at SSRL have discovered a novel set of properties pertaining to a compound of materials called tritellurides. These compounds, composed of three atoms of tellurium and a single atom of one of the rare earth elements, demonstrate unique electronic properties that can be controlled by altering the temperature of the material. The tritellurides display phenomena known as charge density waves (CDW). In a normal conductive metal, electrons persist in a "sea" wherein they are evenly distributed and equally available, or conductive. A CDW occurs under certain circumstances and causes the electrons to clump together, lowering their availability, and thereby lowering the compound's conductivity. Tellurium, when crystallized into quasi-two-dimensional planes and combined with rare earth elements, produces a material with CDWs that can be manipulated and controlled.

223

Yttrium Dopants in Titania  

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

Banfield Research Banfield Research 30 July 2007 A Surprising Behavior of Yttrium Impurities summary written by Brad Plummer, SLAC Communication Office Structurally incorporated impurities have been shown to have systematic effects on the rate of the thermally driven transformations in titania nanoparticles. For example, the anatase-to-rutile transformation is slowed when anatase nanoparticles are doped with a cation of valence >+4, but favored when the valence < +4. Based on these observations, Y3+ dopants should promote the anatase-to-rutile transformation. However, prior studies showed that the transformation is actually inhibited by such impurities. So far these [1,2], observations have remained unexplained. Recently, scientists from University of California Berkeley and Lawrence Berkeley National Laboratory, in collaboration with SSRL beam line scientists at BLs 10-2 and 11-2, used extended x-ray absorption fine structure (EXAFS) experiments on yttrium-doped titania nanoparticles to determine the local structural environment of Y3+ impurities.

224

Science Summary  

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

03, 2008 03, 2008 » Links Scientific Highlight Tainer Website Scripps Press Release » Share this Article Laboratree Ologeez SciLink LabSpaces Role of Specific Protein Mutations in Causing Human Disease Revealed summary written by Brad Plummer, SLAC Communication Office Scientists are one step closer to understanding a piece of the machinery involved in DNA transcription and repair, thanks to work done in part at the SSRL macromolecular crystallography Beam Line 11-1. The team, led by The Scripps Research Institute researcher John Tainer, and colleagues worked out the structure of an important enzyme call XPD, a member of the helicase family of enzymes, found in all living organisms. The results were published in the May 2008 edition of the journal Cell. In eukaryotes, XPD is responsible for unwinding double-stranded DNA

225

Science Summary  

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

25, 2008 25, 2008 » Links Scientific Highlight Saphire Website Scripps Press Release Tracking Ebola, Scripps At the Forefront » Share this Article Laboratree Ologeez SciLink LabSpaces Revealing a Structural Weakness of the Deadly Ebolavirus summary written by Brad Plummer, SLAC Communication Office Scientists are one step closer to conquering the deadly Ebolavirus, thanks to research conducted at SSRL structural biology Beam Lines 9-2 and 11-1 and ALS Beam Line 5.02 by a team of researchers led by Erica Ollmann Saphire from The Scripps Research Institute. The results were published in the July 10 edition of the journal Nature. Using macromolecular crystallography techniques, the team solved the structure of a protein on the Ebolavirus's surface, called glycoprotein GP,

226

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...

227

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.

228

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).

229

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

230

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

231

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

232

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

233

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

234

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

235

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

236

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

237

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

238

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

239

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)

240

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

Note: This page contains sample records for the topic "brad plummer slac" from the National Library of EnergyBeta (NLEBeta).
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241

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...

242

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...

243

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

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

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...

244

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

245

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

246

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

247

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

248

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

249

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

250

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

251

SLAC X-ray Identifies Mystery Atom Critical to Food Supply | Department of  

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

X-ray Identifies Mystery Atom Critical to Food Supply X-ray Identifies Mystery Atom Critical to Food Supply SLAC X-ray Identifies Mystery Atom Critical to Food Supply November 18, 2011 - 10:05am Addthis Serena DeBeer of Cornell University and the Max Planck Institute for Bioinorganic Chemistry, led the the team that performed crucial experiments at SLAC. Dr. DeBeer is pictured above with Michael Roemelt and Frank Neese, also of the Max Planck Institute. Click here to see a photo of the nitrogenase enzyme. Serena DeBeer of Cornell University and the Max Planck Institute for Bioinorganic Chemistry, led the the team that performed crucial experiments at SLAC. Dr. DeBeer is pictured above with Michael Roemelt and Frank Neese,

252

SLAC: Oct 1, 2010 - Sept 30, 2011 | U.S. DOE Office of Science (SC)  

Office of Science (SC) Website

SLAC: Oct 1, 2010 - Sept 30, 2011 SLAC: Oct 1, 2010 - Sept 30, 2011 Laboratory Policy and Evaluation (LPE) LPE Home Staff M&O Contracts SC Laboratory Appraisal Process FY 2013 SC Laboratory Performance Report Cards FY 2012 SC Laboratory Performance Report Cards FY 2011 SC Laboratory Performance Report Cards Ames: Oct 1, 2010 - Sept 30, 2011 Argonne: Oct 1, 2010 - Sept 30, 2011 BNL: Oct 1, 2010 - Sept 30, 2011 Fermilab: Oct 1, 2010 - Sept 30, 2011 LBNL: Oct 1, 2010 - Sept 30, 2011 ORNL: Oct 1, 2010 - Sept 30, 2011 PNNL: Oct 1, 2010 - Sept 30, 2011 PPPL: October 1, 2010 - September 30, 2011 SLAC: Oct 1, 2010 - Sept 30, 2011 JLab: Oct 1, 2010 - Sept 30, 2011 FY 2010 SC Laboratory Performance Report Cards FY 2009 SC Laboratory Performance Report Cards FY 2008 SC Laboratory Performance Report Cards

253

SLAC: Oct 1, 2011 - Sept 30, 2012| U.S. DOE Office of Science (SC)  

Office of Science (SC) Website

SLAC: Oct 1, 2011 - Sept 30, 2012 SLAC: Oct 1, 2011 - Sept 30, 2012 Laboratory Policy and Evaluation (LPE) LPE Home Staff M&O Contracts SC Laboratory Appraisal Process FY 2013 SC Laboratory Performance Report Cards FY 2012 SC Laboratory Performance Report Cards Ames: Oct 1, 2011 - Sept 30, 2012 Argonne: Oct 1, 2011 - Sept 30, 2012 BNL: Oct 1, 2011 - Sept 30, 2012 Fermilab: Oct 1, 2011 - Sept 30, 2012 LBNL: Oct 1, 2011 - Sept 30, 2012 ORNL: Oct 1, 2011 - Sept 30, 2012 PNNL: Oct 1, 2011 - Sept 30, 2012 PPPL: Oct 1, 2011 - Sept 30, 2012 SLAC: Oct 1, 2011 - Sept 30, 2012 JLab: Oct 1, 2011 - Sept 30, 2012 FY 2011 SC Laboratory Performance Report Cards FY 2010 SC Laboratory Performance Report Cards FY 2009 SC Laboratory Performance Report Cards FY 2008 SC Laboratory Performance Report Cards FY 2007 SC Laboratory Performance Report Cards

254

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

255

SLAC: Oct 1, 2007 - Sept 30, 2008 | U.S. DOE Office of Science (SC)  

Office of Science (SC) Website

SLAC: Oct 1, 2007 - Sept 30, 2008 SLAC: Oct 1, 2007 - Sept 30, 2008 Laboratory Policy and Evaluation (LPE) LPE Home Staff M&O Contracts SC Laboratory Appraisal Process FY 2013 SC Laboratory Performance Report Cards FY 2012 SC Laboratory Performance Report Cards FY 2011 SC Laboratory Performance Report Cards FY 2010 SC Laboratory Performance Report Cards FY 2009 SC Laboratory Performance Report Cards FY 2008 SC Laboratory Performance Report Cards Ames: Oct 1, 2007 - Sept 30, 2008 Argonne: Oct 1, 2007 - Sept 30, 2008 BNL: Oct 1, 2007 - Sept 30, 2008 Fermilab: Oct 1, 2007 - Sept 30, 2008 JLab: Oct 1, 2007 - Sept 30, 2008 LBNL: Oct 1, 2007 - Sept 30, 2008 ORNL: Oct 1, 2007 - Sept 30, 2008 PNNL: Oct 1, 2007 - Sept 30, 2008 PPPL: Oct 1, 2007 - Sept 30, 2008 SLAC: Oct 1, 2007 - Sept 30, 2008 FY 2007 SC Laboratory Performance Report Cards

256

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

257

SLAC: Oct 1, 2009 - Sept 30, 2010 | U.S. DOE Office of Science (SC)  

Office of Science (SC) Website

SLAC: Oct 1, 2009 - Sept 30, 2010 SLAC: Oct 1, 2009 - Sept 30, 2010 Laboratory Policy and Evaluation (LPE) LPE Home Staff M&O Contracts SC Laboratory Appraisal Process FY 2013 SC Laboratory Performance Report Cards FY 2012 SC Laboratory Performance Report Cards FY 2011 SC Laboratory Performance Report Cards FY 2010 SC Laboratory Performance Report Cards Ames: Oct 1, 2009 - Sept 30, 2010 Argonne: Oct 1, 2009 - Sept 30, 2010 BNL: Oct 1, 2009 - Sept 30, 2010 Fermilab: Oct 1, 2009 - Sept 30, 2010 LBNL: Oct 1, 2009 - Sept 30, 2010 ORNL: Oct 1, 2009 - Sept 30, 2010 PNNL: Oct 1, 2009 - Sept 30, 2010 PPPL: October 1, 2009 - September 30, 2010 SLAC: Oct 1, 2009 - Sept 30, 2010 JLab: Oct 1, 2009 - Sept 30, 2010 FY 2009 SC Laboratory Performance Report Cards FY 2008 SC Laboratory Performance Report Cards

258

SLAC: Oct 1, 2006 - Sept 30, 2007 | U.S. DOE Office of Science (SC)  

Office of Science (SC) Website

SLAC: Oct 1, 2006 - Sept 30, 2007 SLAC: Oct 1, 2006 - Sept 30, 2007 Laboratory Policy and Evaluation (LPE) LPE Home Staff M&O Contracts SC Laboratory Appraisal Process FY 2013 SC Laboratory Performance Report Cards FY 2012 SC Laboratory Performance Report Cards FY 2011 SC Laboratory Performance Report Cards FY 2010 SC Laboratory Performance Report Cards FY 2009 SC Laboratory Performance Report Cards FY 2008 SC Laboratory Performance Report Cards FY 2007 SC Laboratory Performance Report Cards Ames: Jan 1, 2007 - Sept 30, 2007 Argonne: Oct 1, 2006 - Sept 30, 2007 BNL: Oct 1, 2006 - Sept 30, 2007 Fermilab: Jan 1, 2007 - Sept 30, 2007 LBNL: Oct 1, 2006 - Sept 30, 2007 ORNL: Oct 1, 2006 - Sept 30, 2007 PNNL: Oct 1, 2006 - Sept 30, 2007 PPPL: Oct 1, 2006 - Sept 30, 2007 SLAC: Oct 1, 2006 - Sept 30, 2007

259

SLAC: Oct 1, 2008 - Sept 30, 2009 | U.S. DOE Office of Science (SC)  

Office of Science (SC) Website

SLAC: Oct 1, 2008 - Sept 30, 2009 SLAC: Oct 1, 2008 - Sept 30, 2009 Laboratory Policy and Evaluation (LPE) LPE Home Staff M&O Contracts SC Laboratory Appraisal Process FY 2013 SC Laboratory Performance Report Cards FY 2012 SC Laboratory Performance Report Cards FY 2011 SC Laboratory Performance Report Cards FY 2010 SC Laboratory Performance Report Cards FY 2009 SC Laboratory Performance Report Cards Ames: Oct 1, 2008 - Sept 30, 2009 Argonne: Oct 1, 2008 - Sept 30, 2009 BNL: Oct 1, 2008 - Sept 30, 2009 Fermilab: Oct 1, 2008 - Sept 30, 2009 LBNL: Oct 1, 2008 - Sept 30, 2009 ORNL: Oct 1, 2008 - Sept 30, 2009 PNNL: Oct 1, 2008 - Sept 30, 2009 PPPL: Apr 1, 2009 - Sept 30, 2009 SLAC: Oct 1, 2008 - Sept 30, 2009 JLab: Oct 1, 2008 - Sept 30, 2009 FY 2008 SC Laboratory Performance Report Cards FY 2007 SC Laboratory Performance Report Cards

260

SLAC: Oct 1, 2012 - Sept 30, 2013| U.S. DOE Office of Science (SC)  

Office of Science (SC) Website

SLAC: Oct 1, 2012 - Sept 30, 2013 SLAC: Oct 1, 2012 - Sept 30, 2013 Laboratory Policy and Evaluation (LPE) LPE Home Staff M&O Contracts SC Laboratory Appraisal Process FY 2013 SC Laboratory Performance Report Cards Ames: Oct 1, 2012 - Sept 30, 2013 Argonne: Oct 1, 2012 - Sept 30, 2013 BNL: Oct 1, 2012 - Sept 30, 2013 Fermilab: Oct 1, 2012 - Sept 30, 2013 LBNL: Oct 1, 2012 - Sept 30, 2013 ORNL: Oct 1, 2012 - Sept 30, 2013 PNNL: Oct 1, 2012 - Sept 30, 2013 PPPL: Oct 1, 2012 - Sept 30, 2013 SLAC: Oct 1, 2012 - Sept 30, 2013 JLab: Oct 1, 2012 - Sept 30, 2013 FY 2012 SC Laboratory Performance Report Cards FY 2011 SC Laboratory Performance Report Cards FY 2010 SC Laboratory Performance Report Cards FY 2009 SC Laboratory Performance Report Cards FY 2008 SC Laboratory Performance Report Cards FY 2007 SC Laboratory Performance Report Cards

Note: This page contains sample records for the topic "brad plummer 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.


261

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 Safety, Security and Infrastructure (SSI) SSI Home Facilities and Infrastructure Safeguards & Security Environment, Safety and Health (ES&H) Organization Chart .pdf file (82KB) Phone Listing .pdf file (129KB) SC HQ Continuity of Operations (COOP) Implementation Plan .pdf file (307KB) Categorical Exclusion Determinations SLI & SS Budget Contact Information Safety, Security and Infrastructure U.S. Department of Energy SC-31/Germantown Building 1000 Independence Ave., SW Washington, DC 20585 P: (301) 903-4097 F: (301) 903-7047 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

262

OUTP 9424P 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 sin 2 ?w can be explained by new physics. We find that only the contribution of a new neutral gauge boson, Z ? , 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 Rb, Ae FB, and larger changes in two jet and tt production at hadron colliders.

Francesco Caravaglios A; Graham G. Ross B

1994-01-01T23:59:59.000Z

263

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

SciTech Connect

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

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

2012-04-04T23:59:59.000Z

264

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

265

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

266

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.

267

Carbon Joins the Magnetic Club  

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

Press Release 29 May 2007 Carbon Joins the Magnetic Club summary written by Brad Plummer, SLAC Communication Office The exclusive club of magnetic elements officially has a new member-carbon. Using a proton beam and advanced x-ray techniques, SLAC researchers in collaboration with colleagues from LBNL and the University of Leipzig in Germany have finally put to rest doubts about carbon's ability to be made magnetic. "In the past, some groups thought they had discovered magnetic carbon," said Hendrik Ohldag, the paper's lead author and SSRL staff scientist. "Unfortunately, they realized later that they were misled by small amounts of iron, cobalt or nickel in their samples." In Leipzig, Ohldag's team applied a beam of protons to disrupt and align a portion of the electrons in samples of pure carbon, magnetizing tiny, measurable spots within the carbon. The team then used the x-ray microscope at ALS to obtain images of the magnetized portions-a measurement only possible with a state-of-the-art microscope that uses the brilliant x-ray beams generated when electrons accelerate around the ring of a synchrotron. The x-ray beam also enabled the team to verify beyond doubt that the sample remained free of impurities during the experiments, unlike the case in previous studies.

268

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

DOE Data Explorer (OSTI)

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

None

269

SLAC: Oct 1, 2005 - Sept 30, 2006 | U.S. DOE Office of Science (SC)  

Office of Science (SC) Website

SLAC: Oct 1, 2005 - Sept 30, 2006 SLAC: Oct 1, 2005 - Sept 30, 2006 Laboratory Policy and Evaluation (LPE) LPE Home Staff M&O Contracts SC Laboratory Appraisal Process FY 2013 SC Laboratory Performance Report Cards FY 2012 SC Laboratory Performance Report Cards FY 2011 SC Laboratory Performance Report Cards FY 2010 SC Laboratory Performance Report Cards FY 2009 SC Laboratory Performance Report Cards FY 2008 SC Laboratory Performance Report Cards FY 2007 SC Laboratory Performance Report Cards FY 2006 SC Laboratory Performance Report Cards Ames: Oct 1, 2005 - Sept 30, 2006 Argonne: Oct 1, 2005 - Sept 30, 2006 BNL: Oct 1, 2005 - Sept 30, 2006 Fermilab: Oct 1, 2005 - Sept 30, 2006 LBNL: Oct 1, 2005 - Sept 30, 2006 ORNL: Oct 1, 2005 - Sept 30, 2006 PNNL: Oct 1, 2005 - Sept 30, 2006 PPPL: Oct 1, 2005 - Sept 30, 2006

270

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

Science Conference Proceedings (OSTI)

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

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

2011-08-12T23:59:59.000Z

271

SLAC's Polarized Electron Source Laser System for the E-158 Parity Violation Experiment  

DOE Green Energy (OSTI)

SLAC E158 is an experiment to 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 off 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}. An intense circularly polarized laser beam for the polarized electron source is required with the ability to quickly switch between left and right polarization states with minimal left-right asymmetries in the parameters of the electron beam. This laser beam is produced by a unique SLAC-designed, flash-lamp pumped, Ti:Sapphire laser. We present this laser system design and initial results from recent commissioning runs.

Humensky, Thomas B

2002-05-07T23:59:59.000Z

272

Twist-4 Matrix Elements of the Nucleon from Recent DIS Data at CERN and SLAC  

E-Print Network (OSTI)

We analyse the recent precision measurements of the lepton-hadron deep inelastic scattering at CERN and SLAC to extract model independent constraints among the nucleon matrix elements of the twist-4 operators. We also study a parameterization of these matrix elements and point out the possibility that the matrix elements of the quark-gluon mixed operator has a negative value of the order of $- (400 \\pm 100\\ {\\rm MeV})^2$ at 5 GeV$^2$ renormalization scale.

S. Choi; T. Hatsuda; Y. Koike; Su H. Lee

1993-03-17T23:59:59.000Z

273

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

274

The physics program and status of the SLAC B-Factory and detector  

SciTech Connect

The goal of the SLAC B-Factory is to measure CP violation in the decay of B-mesons and to test the standard model description of CP violation. Work is now underway in upgrading the PEP collider for this project, and much of the preliminary detector design has been done. The physics goals and design of PEP-II are briefly discussed, and the current plans for the detector are outlined.

Hearty, C.

1994-05-01T23:59:59.000Z

275

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

276

SLAC E158: An Experiment to Measure Parity Violation in Moller Scattering  

DOE Green Energy (OSTI)

The E158 experiment at SLAC will make the first measurement of parity violation in Moller scattering. The left-right cross-section asymmetry (ALR) in the elastic scattering of a 45-GeV polarized electron beam with unpolarized electrons in a liquid hydrogen target will be measured. This will give a precise measurement of the weak mixing angle, with delta(sin{sup 2} theta{sub W}{sup eff}) {approximately} 0.0008 (at Q{sup 2} = 0.03GeV{sup 2}).

Woods, Michael B

2000-08-15T23:59:59.000Z

277

A 4 to 0.1 nm FEL Based on the SLAC Linac  

Science Conference Proceedings (OSTI)

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

Pellegrini, C.; /UCLA

2012-06-05T23:59:59.000Z

278

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

279

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

280

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

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281

Steap3  

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

Scientific Highlight Scientific Highlight MSU Press Release Anoop Sendamarai, a PhD student in the laboratory of Prof. Martin Lawrence, received the award for the best poster at the Northwest Crystallographic Workshop held June 20-22, 2008 at the University of Oregon in Eugene. The title of the poster "Structure of the membrane proximal oxidoreductase domain of human Steap3, the dominant ferrireductase of the erythroid transferrin cycle", describes recent work in the Lawrence laboratory on mammalian iron transport and homeostasis. (Images courtesy of MSU) 2 October 2008 Steap3 - a Protein to Enable Iron Incorporation in Cells summary written by Brad Plummer, SLAC Communication Office Iron plays an integral role in many biochemical processes essential for life. Now, working in part at SSRL's Beam Line 9-2, a team of researchers led by Martin Lawrence from Montana State University has solved the structure of a protein critical to the process of importing iron into cells. The results were published in the May 27, 2008 edition of the Proceedings of the National Academy of Sciences.

282

Integrating Newer Technology Software Systems into the SLAC Legacy Control System - Two Case Histories and New CMLOG Developments  

E-Print Network (OSTI)

It has been the goal of SLAC Controls Software to offload processing from the aging Alpha/VMS based control system onto machines that are more widely accepted and used. An additional goal has been to provide more modern software tools to our user community. This paper presents two software products which satisfy those goals.

J. Chen; M. Laznovsky; R. MacKenzie

2001-11-27T23:59:59.000Z

283

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

284

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.*

285

Linear Collider Collaboration Tech Notes LCC-0140 SLAC-TN-04-041  

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

0 0 SLAC-TN-04-041 June 2004 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 Sensitivity to Nano-Tesla Scale Stray Magnetic Fields J. Frisch, T.O. Raubenheimer, P. Tenenbaum

286

Linear Collider Collaboration Tech Notes LCC-0139 SLAC-TN-04-042  

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

9 9 SLAC-TN-04-042 May 2004 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 Alternative Main Linac BNS Configurations for Reduced Energy Spread Andrei Seryi and Peter Tenenbaum

287

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

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

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

288

Linear Collider Collaboration Tech Notes LCC-0132 SLAC-PUB-10229  

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

2 2 SLAC-PUB-10229 November 2003 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 Transverse Deflections in a Cavity Due to the Short-range Longitudinal Wake K. L. F. Bane, T. O. Raubenheimer, G. Stupakov, J. Wu

289

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

290

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

291

The Linac Coherent Light Source at SLAC. Radiological Considerations and Shielding calculations  

Science Conference Proceedings (OSTI)

The Linac Coherent Light Source (LCLS) at SLAC will be the world's first X-ray free electron laser when it becomes operational in 2009. Pulses of X-ray laser light from LCLS will be many orders of magnitude brighter and several orders of magnitude shorter than what can be produced by other X-ray sources available in the world. These characteristics will enable frontier new science in many areas. This paper describes the LCLS beam parameters and its lay-out. Results of the Monte Carlo calculations for the shielding design of the electron dump line, radiation damage to undulator, the residual radiation and the soil activation around the electron dump are presented.

Mao, X.S.; Fasso, A.; Nakao, N.; Rokni, S.H.; Vincke, H.; /SLAC

2005-12-02T23:59:59.000Z

292

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

293

Analysis of the Wakefield Effects in the PEP-II SLAC B-FACTORY  

SciTech Connect

We present the history and analysis of different wake field effects throughout the operational life of the PEP-II SLAC B-factory. Although the impedance of the high and low energy rings is small, the intense high current beams generated a lot of power. The effects from these wake fields are: heating and damage of vacuum beam chamber elements like RF seals, vacuum valves , shielded bellows, BPM buttons and ceramic tiles; vacuum spikes, vacuum instabilities and high detector background; beam longitudinal and transverse instabilities. We also discuss the methods used to eliminate these effects. Results of this analysis and the PEP-II experience may be very useful in the design of new storage rings and light sources.

Novokhatski, A; Seeman, J.; Sullivan, M.; Wienands, U.; /SLAC

2009-07-06T23:59:59.000Z

294

Linear Collider Collaboration Tech Notes LCC-0141 SLAC-TN-04-040  

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

1 1 SLAC-TN-04-040 May 2004 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 Availability and Failure Effects of NLC Main Linac Mechanical Movers T. M. Himel, C. Spencer, Peter Tenenbaum

295

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

296

THE SLACS SURVEY. VIII. THE RELATION BETWEEN ENVIRONMENT AND INTERNAL STRUCTURE OF EARLY-TYPE GALAXIES  

Science Conference Proceedings (OSTI)

We study the relation between the internal structure of early-type galaxies and their environment using 70 strong gravitational lenses from the SLACS Survey. The Sloan Digital Sky Survey (SDSS) database is used to determine two measures of overdensity of galaxies around each lens-the projected number density of galaxies inside the tenth nearest neighbor ({sigma}{sub 10}) and within a cone of radius one h{sup -1} Mpc (D {sub 1}). Our main results are as follows. (1) The average overdensity is somewhat larger than unity, consistent with lenses preferring overdense environments as expected for massive early-type galaxies (12/70 lenses are in known groups/clusters). (2) The distribution of overdensities is indistinguishable from that of 'twin' nonlens galaxies selected from SDSS to have the same redshift and stellar velocity dispersion {sigma}{sub *}. Thus, within our errors, lens galaxies are an unbiased population, and the SLACS results can be generalized to the overall population of early-type galaxies. (3) Typical contributions from external mass distribution are no more than a few percent in local mass density, reaching 10-20% ({approx}0.05-0.10 external convergence) only in the most extreme overdensities. (4) No significant correlation between overdensity and slope of the mass-density profile of the lens galaxies is found. (5) Satellite galaxies (those with a more luminous companion) have marginally steeper mass-density profiles (as quantified by f {sub SIE} = {sigma}{sub *}/{sigma}{sub SIE} = 1.12 {+-} 0.05 versus 1.01 {+-} 0.01) and smaller dynamically normalized mass enclosed within the Einstein radius ({delta}log M {sub Ein}/M {sub dim} differs by -0.09 {+-} 0.03 dex) than central galaxies (those without). This result suggests that tidal stripping may affect the mass structure of early-type galaxies down to kpc scales probed by strong lensing, when they fall into larger structures.

Treu, Tommaso; Gavazzi, Raphael; Gorecki, Alexia; Marshall, Philip J. [Department of Physics, University of California, Santa Barbara, CA 93106 (United States); Koopmans, Leon V. E. [Kapteyn Institute, P.O. Box 800, 9700AV Groningen (Netherlands); Bolton, Adam S. [Institute for Astronomy, University of Hawai'i, 2680 Woodlawn Dr., Honolulu, HI 96822 (United States); Moustakas, Leonidas A. [Jet Propulsion Laboratory, 4800 Oak Grove Dr, Caltech, MS169-327, Pasadena, CA 91109 (United States); Burles, Scott [Department of Physics and Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology, 77 Massachusetts Ave., Cambridge, MA 02139 (United States)], E-mail: tt@physics.ucsb.edu, E-mail: pjm@physics.ucsb.edu, E-mail: gavazzi@iap.fr, E-mail: koopmans@astro.rug.nl, E-mail: bolton@ifa.hawaii.edu, E-mail: leonidas@jpl.nasa.gov, E-mail: burles@mit.edu

2009-01-01T23:59:59.000Z

297

11 Jul 2007 (updated 3 Feb 2009) SLAC-I-760-0A07J-005-R003 1 of 1 Authorization to Release Occupational Exposure Information  

E-Print Network (OSTI)

information concerning the internal and external occupational radiation dose I received while at SLAC. (Please Occupational Exposure Information To obtain this authorization, print this form, fill it in, sign it

Wechsler, Risa H.

298

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

Science Conference Proceedings (OSTI)

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

Drell, Persis [SLAC Director

2011-03-22T23:59:59.000Z

299

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

300

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

Science Conference Proceedings (OSTI)

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

Pernet, Pierre-Louis; /Ecole Polytechnique, Lausanne /SLAC

2012-01-06T23:59:59.000Z

Note: This page contains sample records for the topic "brad plummer 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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301

Beam Stabilization in the SLAC A-line Using a Skew Quadrupole  

DOE Green Energy (OSTI)

The E158 experiment at SLAC is a precision measurement of the left-right asymmetry in Moeller scattering at low Q{sup 2} utilizing a high-current long-pulse polarized electron beam scattering off unpolarized electrons in a liquid hydrogen target [1]. Tolerances on beam size and position/angle stability for E158 are extremely tight, but the electron beam is subject to intensity jitter, dispersion, and wakefield effects in the linac which tend to make it unstable. Horizontal emittance growth due to synchrotron radiation in the transport line from the linac to the target (''A-line'') reduces the sensitivity of the horizontal beam parameters at the target to incoming changes, but instability in the vertical plane was observed during the E158 pilot run. A skew quadrupole recently installed in the A-line 90 m upstream of the target has been used to couple the projected transverse emittances, increasing the vertical emittance of the beam and thereby reducing its sensitivity to incoming changes. Simulations of the performance of this skew quadrupole, along with measured beam data with and without the skew quadrupole, will be presented.

Woodley, Mark D

2002-09-27T23:59:59.000Z

302

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

303

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

304

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

305

SREC Market Update NREL Webinar Brad Bowery | CEO | SRECTrade...  

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

Mar SREC Supply - Sellers Go To Market SREC Demand - Buyers Must Report Compliance SREC Market Pitfalls * No solar specific carve-out (CA, TX) * Regulated markets limited...

306

A Liquid Hydrogen Target for Precision Measurement of the Weak Mixing Angle in Moller Scattering at SLAC  

DOE Green Energy (OSTI)

A 150 cm long liquid hydrogen target has been built for the SLAC End Station A E158 experiment. The target loop volume is 55 liters, and the maximum target heat load deposited by the electron beam is {approx} 700 W. The liquid hydrogen density fluctuation with full beam current (120 Hz repetition rate, 6 x 10{sup 11} electrons/spill) on target is well below 10{sup -4} level, which fulfills the requirement for a precision measurement of the weak mixing angle in the polarized electron-electron scattering process.

Weisend, John G

2002-11-07T23:59:59.000Z

307

SLAC's Polarized Electron Source Laser System and Minimization of Electron Beam Helicity Correlations for the E-158 Parity Violation Experiment  

E-Print Network (OSTI)

SLAC E-158 is an experiment designed to make the first measurement of parity violation in Moller scattering. E-158 will measure the right-left cross-section asymmetry, A_LR^Moller, in the elastic 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. To make this measurement, the polarized electron source requires for operation an intense circularly polarized laser beam and the ability to quickly switch between right- and left-helicity polarization states with minimal right-left helicity-correlated asymmetries in the resulting beam parameters (intensity, position, angle, spot size, and energy), ^beam A_LR's. This laser beam is produced by a unique SLAC-designed flashlamp-pumped Ti:Sapphire laser and is propagated through a carefully designed set of polarization optics. We analyze the transport of nearly circularly polarized light through the optical system and identify several mechanisms that generate ^beam A_LR's. We show that the dominant effects depend linearly on particular polarization phase shifts in the optical system. We present the laser system design and a discussion of the suppression and control of ^beam A_LR's. We also present results on beam performance from engineering and physics runs for E-158.

T. B. Humensky; R. Alley; A. Brachmann; M. J. Browne; G. D. Cates; J. Clendenin; J. deLamare; J. Frisch; T. Galetto; E. W. Hughes; K. S. Kumar; P. Mastromarino; J. Sodja; P. A. Souder; J. Turner; M. Woods

2002-09-18T23:59:59.000Z

308

ENVIRONMENT, SAFETY & HEALTH DIVISION 1 August 2011 SLAC-I-730-0A10C-006-R001 1 of 5  

E-Print Network (OSTI)

energy sources following Control of Hazardous Energy: Hazard Analysis Procedure: #12;SLAC National electrical worker Assists the lead authorized worker with switching as needed to establish energy isolation: Control of Hazardous Energy Group Lockout Procedure Product ID: 531 | Revision ID: 1361 | Date published

Wechsler, Risa H.

309

ENVIRONMENT, SAFETY & HEALTH DIVISION 8 July 2011 SLAC-I-730-0A21C-032-R000 1 of 4  

E-Print Network (OSTI)

), Decommissioning Handbook: Procedures and Practices for Decommissioning (DOE/EM-0383). #12;SLAC National of Environmental Management (EM), Decommissioning Handbook: Procedures and Practices for Decommissioning (DOE/EM in a manner that does not endanger personnel or harm the environment. They cover temporary and permanent

Wechsler, Risa H.

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

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

312

Bayesian analysis of joint strong gravitational lensing and dynamic galactic mass in SLACS: evidence of line-of-sight contamination  

E-Print Network (OSTI)

We readdress the calculation of the mass of early-type galaxies using strong gravitational lensing and stellar dynamics. Our sample comprises 27 galaxies in the Sloan Lens ACS (SLACS) Survey. Comparing the mass estimates from these two independent methods in a Bayesian framework, we find evidence of significant line-of-sight mass contamination. Assuming a power-law mass distribution, the best fit density profile is given by $\\rho \\propto r^{-1.69\\pm0.05}$. We show that neglecting the line-of-sight mass contamination produces an overestimate of the mass attributed to the lens-galaxy by the lensing method, which introduces a bias in favor of a SIS profile when using the joint lensing and dynamic analysis to determine the slope of the density profile. We suggest that the line-of-sight contamination could also be important for other astrophysical and cosmological uses of joint lensing and dynamical measurements.

Antonio C. C. Guimares; Laerte Sodr Jr.

2007-06-21T23:59:59.000Z

313

First Measurements of the Longitudinal Bunch Profile at SLAC Using Coherent Smith-Purcell Radiation at 28GeV  

Science Conference Proceedings (OSTI)

Coherent Smith-Purcell radiation has been demonstrated as a technique for measuring the longitudinal profile of charged particles bunches in the low to intermediate energy range. However, with the advent of the International Linear Collider, the need has arisen for a non-invasive method of measuring the bunch profile at extremely high energies. Smith-Purcell radiation has been used for the first time in the multi-GeV regime to measure the longitudinal profile of the 28GeV SLAC beam. The experiment has both successfully determined the bunch length, and has also demonstrated its sensitivity to bunch profile changes. The challenges associated with this technique, and its prospects as a diagnostic tool are reported here.

Blackmore, V.; Doucas, G.; Ottewell, B.; Perry, C.; /Oxford U.; Kimmitt, M.F.; /Essex U.; Arnold, R.; Molloy, S.; Woods, M.; /SLAC

2011-11-02T23:59:59.000Z

314

Data Plots of Run I - III Results from SLAC E-158: A precision Measurement of the Weak Mixing Angle in Moller Scattering  

DOE Data Explorer (OSTI)

Three physics runs were made in 2002 and 2003 by E-158. As a result, the E-158 Collaboration announced that it had made "the first observation of Parity Violation in electron-electron (Moller) scattering). This precise Parity Violation measurement gives the best determination of the electron's weak charge at low energy (low momentum transfer between interacting particles). E158's measurement tests the predicted running (or evolution) of this weak charge with energy, and searches for new phenomena at TeV energy scales (one thousand times the proton-mass energy scale).[Copied from the experiment's public home page at http://www-project slac.stanford.edu/3158/Default.htm] See also the E158 page for collaborators at http://www.slac.stanford.edu/exp/e158/. Both websites provide data and detailed information.

None

315

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...

316

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...

317

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)...

318

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,...

319

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...

320

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....

Note: This page contains sample records for the topic "brad plummer 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.


321

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...

322

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...

323

Light-cone path integral approach to the Landau-Pomeranchuk-Migdal effect and the SLAC data on bremsstrahlung from high energy electrons  

E-Print Network (OSTI)

The recent data of the SLAC E-146 collaboration on the Landau-Pomeranchuk-Migdal effect for bremsstrahlung from 8 and 25 GeV electrons are analyzed within a rigorous light-cone path integral approach. Numerical calculations have been carried out treating rigorously the Coulomb effects and including the inelastic processes. Comparison with the experimental data is performed taking into account multi-photon emission and photon absorption. For most of the targets the theoretical predictions are in excellent agreement with the experimental data.

B. G. Zakharov

1998-05-10T23:59:59.000Z

324

Preprint typeset using L ATEX style emulateapj v. 10/09/06 ENHANCED LENSING RATE BY CLUSTERING OF MASSIVE GALAXIES: NEWLY DISCOVERED SYSTEMS IN THE SLACS FIELDS  

E-Print Network (OSTI)

Galaxy-scale strong gravitational lens systems are useful for a variety of astrophysical applications. However, their use is limited by the relatively small samples of lenses known to date. It is thus important to develop efficient ways to discover new systems both in present and forthcoming datasets. For future large high-resolution imaging surveys we anticipate an ever-growing need for efficiency and for independence from spectroscopic data. In this paper, 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

Elisabeth R. Newton; Philip J. Marshall; Tommaso Treu

2008-01-01T23:59:59.000Z

325

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...

326

SLAC-PUB-8640  

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

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

327

SLAC-PUB-2446  

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

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

328

slac-pub-12409  

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

emission in the breakdown process. Another experimental idea follows from the recent work on a Schottky-enabled photoemission in an RF photoinjector 1 that allows us to...

329

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...

330

SLAC - KEK: ISG8  

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

Agenda Working Groups: WG1: Parameters, Design, Instrumentation and Tuning, Bldg.212 Cascades Conference Rm. WG2: Damping Rings and ATF, Bldg.214 Fuji Conference Rm WG3: RF...

331

Single shot spatial and temporal coherence properties of the SLAC linac coherent light source in the hard x-ray regime  

Science Conference Proceedings (OSTI)

We measured the transverse and longitudinal coherence properties of the Linac Coherent Light Source (LCLS) at SLAC in the hard x-ray regime at 9 keV photon energy on a single shot basis. Speckle patterns recorded in the forward direction from colloidal nanoparticles yielded the transverse coherence properties of the focused LCLS beam. Speckle patterns from a gold nanopowder recorded with atomic resolution allowed us to measure the shot-to-shot variations of the spectral properties of the x-ray beam. The focused beam is in the transverse direction fully coherent with a mode number close to 1. The average number of longitudinal modes behind the Si(111) monochromator is about 14.5 and the average coherence time {tau}{sub c} = (2.0 {+-} 1.0) fs. The data suggest a mean x-ray pulse duration of (29 {+-} 14) fs behind the monochromator for (100 {+-} 14) fs long electron pulses.

Gutt, C.; Wochner, P.; Fischer, B.; Conrad, H.; Castro-Colin, M.; Lee, S.; Lehmkuhler, F.; Steinke, I.; Sprung, M.; Roseker, W.; Zhu, D.; Lemke, H.; Bogle, S.; Fuoss, P. H.; Stephenson, G. B.; Cammarata, M.; Fritz, D. M.; Robert, A.; Grubel, G. (Materials Science Division); (Deutsches Elektronen-Synchrotron); (Max-Planck-Institut fur Intelligene Systeme); (LCLS, SLAC Nat. Accelerator Lab.)

2012-01-01T23:59:59.000Z

332

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.

333

Microsoft PowerPoint - 11_Steven Sherman and Brad Patton_NMMSS...  

National Nuclear Security Administration (NNSA)

years, and were renewable * Customers paid a low fee to cover some shipping and handling costs, but paid nothing for the Cf-252 - Sources were to be returned at the end of the...

334

The Challenges Facing Fusion Safety and Environmental Research Brad Merrill, Lee Cadwallader, and Paul Humrickhouse  

E-Print Network (OSTI)

for the release of clearable materials. 5. Experience with large scale remote handling will be important prior to DEMO. Remote handling of large components will be instrumental to the success of fusion. Activation), thus additional experience with remote handling of large components is desirable prior to DEMO

335

Wedge: Splitting Applications into Reduced-Privilege Compartments Andrea Bittau Petr Marchenko Mark Handley Brad Karp  

E-Print Network (OSTI)

· early CFD activities at HFIR · cold-source (and other upgrades)CFD activities at HFIR · LEU Conversion this then at a research reactor ? · 1991 started at HFIR · 1992 graduation · ~ 2003 COMSOL becomes the tool of choice (Freels) Early CFD Activities at HFIR #12;Freels ,CFD Colloquium at UTK,in honor of A, J. Baker, 05

Karp, Brad

336

Two-dimensional kinematics of SLACS lenses: I. Phase-space analysis of the early-type galaxy SDSS J2321-097 at z=0.1  

E-Print Network (OSTI)

We present the first results of a combined VLT VIMOS integral-field unit and Hubble Space Telescope (HST)/ACS study of the early-type lens galaxy SDSS J2321-097 at z=0.0819, extending kinematic studies to a look-back time of 1 Gyr. This system, discovered in the Sloan Lens ACS Survey (SLACS), has been observed as part of a VLT Large Programme with the goal of obtaining two-dimensional stellar kinematics of 17 early-type galaxies to z~0.35 and Keck spectroscopy of an additional dozen lens systems. Bayesian modelling of both the surface brightness distribution of the lensed source and the two-dimensional measurements of velocity and velocity dispersion has allowed us, under the only assumptions of axisymmetry and a two-integral stellar distribution function (DF) for the lens galaxy, to dissect this galaxy in three dimensions and break the classical mass--anisotropy, mass-sheet and inclination--oblateness degeneracies. Our main results are that the galaxy (i) has a total density profile well described by a single power-law rho propto r^{-gamma'} with gamma'=2.06^{+0.03}_{-0.06}; (ii) is a very slow rotator (specific stellar angular momentum parameter lambda_R = 0.075); (iii) shows only mild anisotropy (delta ~ 0.15); and (iv) has a dark matter contribution of ~30 per cent inside the effective radius. Our first results from this large combined imaging and spectroscopic effort with the VLT, Keck and HST show that the structure of massive early-type galaxies beyond the local Universe can now be studied in great detail using the combination of stellar kinematics and gravitational lensing. Extending these studies to look-back times where evolutionary effects become measurable holds great promise for the understanding of formation and evolution of early-type galaxies.

Oliver Czoske; Matteo Barnabe; Leon V. E. Koopmans; Tommaso Treu; Adam S. Bolton

2007-11-06T23:59:59.000Z

337

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

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

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....

338

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

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

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...

339

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

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

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...

340

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...

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341

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.

342

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...

343

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

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

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...

344

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

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

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...

345

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...

346

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

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

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,...

347

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...

348

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...

349

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...

350

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...

351

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

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

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...

352

SLAC National Accelerator Laboratory Technologies ...  

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

353

SLAC - KEK: ISG8 Schedule  

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

Agenda Agenda ISG8 Home Page Working Groups: WG1: Parameters, Design, Instrumentation and Tuning, Bldg.212 Cascades Conference Rm. WG2: Damping Rings and ATF, Bldg.214 Fuji Conference Rm WG3: RF Sources, Orange Rm (half) WG4:Structures, Orange Rm (half) WG5: Ground Motion; Site Requirements and Investigations, Bldg.281 Conventional Facilities Rm. Monday: 09:00 Plenary Sessions (Auditorium) Welcome - J. Dorfan Views from KEK - K. Takata TRC News - G. Loew Goals for ISG-8 - D. Burke / N. Toge Working Group Plans (5 min ea) - WG Conveners 11:00 Working Group Sessions 12:00 Lunch 13:30 Working Group Sessions Tuesday: 09:00 Daily Schedule Update (Orange Rm) - WG Conveners (5min ea) 09:30 Working Group Sessions 12:00 Lunch 13:30 Working Group Sessions Wednesday:

354

SLAC Linac Coherent Light Source  

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

Science User Facility Search this site... Search Help (new window) Top Link Bar LCLS Lasers Expand Lasers LCLS Quick Launch Home About LCLS Expand About LCLS LCLS News Expand...

355

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 -...

356

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...

357

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,...

358

Research | SLAC National Accelerator Laboratory  

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

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

359

SLAC's Photon Science Directorate carries  

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

nation's most critical technical challenges. Greening the Future Imagine a future where solar energy is cheaper than fossil fuels, cars run for years on sturdy, lightweight...

360

SLAC Linac Coherent Light Source User Site  

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

Welcome to the LCLS User Resources Site Welcome to the LCLS User Resources Site User Portal | Agreements | Data Collection & Analysis | Logistics | Policies | Proposals | Safety | Schedules | Shipping The Linac Coherent Light Source (LCLS) encourages scientists from diverse fields to submit proposals for experiments that utilize the LCLS's unique capabilities. Interested scientists are encouraged to learn more about the latest developments by contacting LCLS staff scientists and by reviewing the instrument descriptions. Step-By-Step Instructions to Working at LCLS Review LCLS Policies Review Machine FAQ & Parameters Register and Submit Proposals Confirm User Agreement Reserve Accommodations Complete Safety Training Request Computer Account Establish User Account Ship Samples/Equipment Review Check-in Procedures

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361

SLAC National Accelerator Laboratory - Magnetism Combines with...  

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

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...

362

SLAC National Accelerator Laboratory - ALD Searches  

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

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

363

SLAC National Accelerator Laboratory - Stefan Mannsfeld Wins...  

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

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...

364

SLAC National Accelerator Laboratory - Research Resources  

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

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

365

2013 APS SLAC Site Office. pdf  

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

E!L ;L E!L ;<C9DF@<AGL B>L  !"# ,%!"L ,@.D>AE .343L-.;1E&365E ,>.1E (- #"E )2<9=E +.@4E $"E 51&.3L FBZH; M]r ]{ 6! 4125 QOSWBRG[O ISW< Mv~axg B0 O_D{a]{ Fax  Fi|a_v| bv| Iian` Sxa{]ivr~ Sbbi_a vb Y_iar_a IWSO= U] n Jvn]r @ Yia O]r]ea| YNBE Yia Sbbi_a Y[DMHEZ> Brr ]n R]ivr]o Hr i{vsqar]n Uvni_ B_ RHUB Un]rrirf

366

SLAC Linac Coherent Light Source User Site  

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

User Logistics User Logistics Accommodations/Hours/Maps | Agreements | Check-In | Computing | Safety | Shipping | Supplies & Gases | User Feedback | Publications Proposal Submission and Scheduling Step-By-Step Instructions to Working at LCLS Review LCLS Policies Review Machine FAQ & Parameters Register and Submit Proposals Confirm User Agreement Reserve Accommodations Complete Safety Training Request Computer Account Establish User Account Ship Samples/Equipment Review Check-in Procedures Provide Feedback Inform us of Publications Participate in LCLS Users' Organization LCLS experiments start with submitting a proposal, usually due twice a year. Each proposal is for one specific experiment and each proposal is valid for one scheduling cycle only. There is no limit to the number of

367

SLAC Linac Coherent Light Source User Site  

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

Safety Safety Safety and Security Overview | Proposal Safety Review | Safety Training | Feedback Safety and Security Overview Step-By-Step Instructions to Working at LCLS Review LCLS Policies Review Machine FAQ & Parameters Register and Submit Proposals Confirm User Agreement Reserve Accommodations Complete Safety Training Request Computer Account Establish User Account Ship Samples/Equipment Review Check-in Procedures Provide Feedback Inform us of Publications Participate in LCLS Users' Organization Each person who works at LCLS is required to be familiar with and identify in advance the hazards associated with his/her work, the hazards associated with work areas, and to properly implement all necessary procedures and protocols for mitigation of those hazards. Each person is required to

368

SLAC_TN04051_04.dvi  

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

issue is that of energy deposition in the 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 Abstract: The effects of electron conditioning on commercially prepared aluminum alloys 1100 and 6063 were investigated. Contrary to the assumption that electron conditioning, if performed long enough, can reduce and stabilize the SEY at approximately 1.1, the SEY of aluminum did not go lower than 1.8. In fact, it increases again with continued electron exposure dose.

369

SLAC Linac Coherent Light Source User Site  

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

(SAC) LCLS Detector Advisory Committee (LDAC) LCLS Proposal Review Panel LCLS Users' Organization LCLS Collaborators User Research Administration Floor Support Staff Letter...

370

SLAC National Accelerator Laboratory - Bringing Telescope Tech...  

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

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...

371

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

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

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...

372

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

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

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...

373

SLAC National Accelerator Laboratory - KIPAC Theorists Weigh...  

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

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....

374

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

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

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...

375

2006 SLAC ES&H.indd  

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

DART Days Away and Restricted Time DOE U.S. Department of Energy EMS Environmental Management System ES&H Environment, Safety, and Health FRAM Functions, Responsibilities, and...

376

SLAC National Accelerator Laboratory - American Physical Society...  

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

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...

377

SLAC National Accelerator Laboratory - SSRL Researchers Show...  

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

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...

378

SLAC National Accelerator Laboratory - Bienenstock, Michelson...  

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

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...

379

SLAC National Accelerator Laboratory - Novel Analysis Method...  

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

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...

380

SLAC National Accelerator Laboratory - Postdoc Eric Verploegen...  

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

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...

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to obtain the most current and comprehensive results.


381

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...

382

SLAC National Accelerator Laboratory - Transparent Batteries...  

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

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...

383

SLAC National Accelerator Laboratory - New Nanostructure for...  

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

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...

384

SLAC Linac Coherent Light Source User Site  

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

X-ray Scattering, Spectroscopy, or Single Particle Imaging of Biological Objects (BIO-S);Chemistry and Materials-Soft Condensed Matter (CHEMSCM); Materials-Hard Condense...

385

SLAC Linac Coherent Light Source User Site  

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

Christian Bressler European XFEL (2011-2014), Chair ChemistrySoft Condensed Matter (CHEM) Petra Fromme Arizona State University (2013-2016) Biology (BIO)Atomic, Molecular and...

386

SLAC National Accelerator Laboratory - Photon Science  

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

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...

387

SLAC National Accelerator Laboratory - Infrastructure and Safety  

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

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

388

2006 SLAC ES&H.indd  

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

Away and Restricted Time DOE U.S. Department of Energy EMS Environmental Management System ES&H Environment, Safety, and Health FRAM Functions, Responsibilities, and Authorities...

389

SLAC National Accelerator Laboratory - Meeting Rooms  

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

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...

390

SLAC National Accelerator Laboratory - Molecular Graphene Heralds...  

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

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...

391

SLAC National Accelerator Laboratory - Designing Chemical Catalysts...  

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

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...

392

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

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

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...

393

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

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

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...

394

SLAC National Accelerator Laboratory - KIPAC Researchers Track...  

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

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...

395

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

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

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...

396

SLAC National Accelerator Laboratory - symmetry magazine  

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

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...

397

SLAC National Accelerator Laboratory - Designer Glue Improves...  

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

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...

398

SLAC National Accelerator Laboratory - Innovative SIMES Solar...  

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

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...

399

SLAC National Accelerator Laboratory - Synchrotrons Explore Water...  

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

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...

400

SLAC National Accelerator Laboratory - Forces Within Molecules...  

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

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 "brad plummer slac" from the National Library of EnergyBeta (NLEBeta).
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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 - 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...

402

SLAC National Accelerator Laboratory - Researchers Converge to...  

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

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...

403

SLAC National Accelerator Laboratory - Underground Search for...  

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

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...

404

Monitoring SLAC High Performance UNIX Computing Systems  

SciTech Connect

Knowledge of the effectiveness and efficiency of computers is important when working with high performance systems. The monitoring of such systems is advantageous in order to foresee possible misfortunes or system failures. Ganglia is a software system designed for high performance computing systems to retrieve specific monitoring information. An alternative storage facility for Ganglia's collected data is needed since its default storage system, the round-robin database (RRD), struggles with data integrity. The creation of a script-driven MySQL database solves this dilemma. This paper describes the process took in the creation and implementation of the MySQL database for use by Ganglia. Comparisons between data storage by both databases are made using gnuplot and Ganglia's real-time graphical user interface.

Lettsome, Annette K.; /Bethune-Cookman Coll. /SLAC

2005-12-15T23:59:59.000Z

405

SLAC National Accelerator Laboratory - SIMES Professor Honored...  

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

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

406

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...

407

SLAC National Accelerator Laboratory - Breakthrough Research...  

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

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...

408

SLAC National Accelerator Laboratory - SUNCAT Director Awarded...  

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

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...

409

SLAC Linac Coherent Light Source User Site  

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

User Support Contact information for LCLS scientific, operations and user support staff. User Support For information about user research administration at LCLS or SSRL. Cathy...

410

SLAC Linac Coherent Light Source User Site  

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650-926-3191 | Fax: 650-926-3600 We encourage your comments, questions or suggestions. LCLSSLAC is located on 426 acres of Stanford University property, just three miles west of...

411

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...

412

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...

413

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...

414

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...

415

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...

416

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...

417

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...

418

SLAC National Accelerator Laboratory - 2012 News Features  

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

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...

419

SLAC National Accelerator Laboratory - 2011 News Archive  

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

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...

420

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...

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421

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...

422

SLAC Linac Coherent Light Source User Site  

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Policies and Guidelines Access | Installation of User-Supplied Endstations | Reporting and Acknowledgement | Publications and Press | Proposal Preparation | Proposal Review| Beam...

423

SLAC National Accelerator Laboratory - Printing Innovations Provide...  

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

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....

424

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...

425

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

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

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...

426

SLAC Linac Coherent Light Source User Site  

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

Schedules Schedules Schedule of Experiments for the Current Run | User Support Requests | Changes to the Operating Schedule LCLS Operations Schedules Step-By-Step Instructions to Working at LCLS Review LCLS Policies Review Machine FAQ & Parameters Register at User Portal Confirm User Agreement Reserve Accommodations Complete Safety Training Request Computer Account Establish User Account Ship Samples/Equipment Review Check-in Procedures Provide Feedback Inform us of Publications Participate in LCLS Users' Organization Tentative Long-Range Operating Plans Experiments Scheduled March to August 2014 Experiments Scheduled July 2013 to March 2014 Experiments Scheduled January to July 2013 Experiments Scheduled June to December 2012 Experiments Scheduled November 2011 to May 2012

427

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...

428

U.S. CMS - U.S. CMS @ Work - Safety  

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Electromagnetic Calorimeter Institution Board Electromagnetic Calorimeter Institution Board Ren-yuan Zhu, Chair Caltech Renyuan Zhu zhu@hep.caltech.edu Cornell Ritchie Paterson ritchie@lepp.cornell.edu Fermilab Jeffrey Berryhill berryhil@fnal.gov Florida State Yuri Gershtein gerstein@hep.fsu.edu Kansas State Yurii Maravin maravin@fnal.gov Minnesota Roger Rusack rusack@mnhep.hep.umn.edu Northeastern Steve Reucroft reucroft@neu.edu Notre Dame Colin Jessop jessop@slac.stanford.edu Princeton Pierre Piroue piroue@princeton.edu Virginia Brad Cox cox@uvahep.phys.virginia.edu U.S. CMS is supported by the U.S. Department of Energy U.S. Department of

429

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...

430

Organic-vapor-liquid-solid deposition with an impinging gas jet Daniel W. Shaw, Kevin Bufkin, Alexandr A. Baronov, Brad L. Johnson, and David L. Patrick  

E-Print Network (OSTI)

Organic-vapor-liquid-solid deposition with an impinging gas jet Daniel W. Shaw, Kevin Bufkin gas jet to a substrate coated by a thin liquid solvent layer. Films of the organic semiconductor, and the results compared to experiment. The combination of gas jet delivery with an organic-vapor-liquid

Patrick, David L.

431

Brad Coates, Sun Services IT Operations Yunas Nadiadi, Sun IT Strategy and Architecture Ragu Venkatesan, Sun IT Business Engagement and Applications  

E-Print Network (OSTI)

All rights reserved. This product or document is protected by copyright and distributed under licenses restricting its use, copying, distribution, and decompilation. No part of this product or document may be reproduced in any form by any means without prior written authorization of Sun and its licensors, if any. Third-party software, including font technology, is copyrighted and licensed from Sun suppliers. Parts of the product may be derived from Berkeley BSD systems, licensed from the University of California.

A Sun; Coolthreads Technology Solution

2007-01-01T23:59:59.000Z

432

As you prepare for your upcoming beam time, please be aware that construction is planned to update SLAC Gate 17 with RFID proximity card access hardware and to change the stairs next to the Security hut to an ADA compliant ramp. Please forward this to your proposal collaborators (and ensure that all users have registered and completed training before they arrive). This construction is scheduled to begin Tuesday 5/28 and be completed by 6/28. During this construction, access to the LCLS and SSRL buildings and experimental facilities will be provided as follows: VEHICLES ONLY THROUGH GATE 17 5/28-6/28 0600-1530 (6 am-3:30 pm) Construction Zone. Only VEHICLE traffic will be allowed access through Gate 17 and flagman will provide traffic control. 1530-1800 (3:30-6:00 pm) Assumes construction will have stopped for the day; both traffic lanes will be open for vehicles. 1800-0600 (6 pm-6 am) As now, Gate 17 will be closed or barricaded overnight. PEDESTRIANS ONLY THROUGH GATE 16 5/28-6/28 The pedestrian turnstile at Gate 16A will not change. The turnstile is available for pedestrian use 24/7 as long as the individual has a valid SLAC ID badge (and there is a guard at Gate 30 to 'buzz' them through). 0700-1600 (6 am-4 pm) Pedestrians who would normally walk through Gate 17 will instead follow the detour to Gate 16 swing gate which will be unlocked and staffed by Security. A valid SLAC ID badge is needed to enter; new users without IDs will be allowed to proceed for check-in and badging after confirmation with the User Research Administration Office (see detour map attached). FYI - After the construction is completed and proximity card readers are fully functional, users and staff will enter Gates 17 and 30 using an activated RFID proximity card. More details to follow.  

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

Building 137 Building 137 Bldg. 270 CONSTRUCTION IMPACTS PEDESTRIAN AND VEHICLE ACCESS THROUGH SLAC SECURITY GATE 17 ~ May 28-June 28, 2013 The stairs next to the Gate 17 Guard House will be replaced with an ADA compliant ramp; the turnstile and fence at SLAC Gate 17 will be updated with RFID proximity card access hardware. During this construction, access beyond the fence, including the SSRL and LCLS buildings and user facilities will be provided as follows: VEHICLES ONLY THROUGH GATE 17 Security will continue to check for valid ID badges. 0600-1530 (6 am-3:30 pm) - Construction Zone. Only VEHICLE traffic will be allowed access through Gate 17 and flagman will provide traffic control. Security will 1530-1800 (3:30-6:00 pm) - Assuming construction has

433

Learning How Nature Uses Sunlight to Split Water  

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

Mn4Ca Structure. (click on image for diagram portraying the water-splitting catalytic cycle) Mn4Ca Structure. (click on image for diagram portraying the water-splitting catalytic cycle) Scientific Highlight LBNL Press Release Physical Biosciences, LBNL 30 November 2006 Learning How Nature Splits Water (Condensed by Brad Plummer from a press release issued by Lawrence Berkeley National Laboratory) Billions of years ago, primitive bacteria developed a way to harness sunlight to split water molecules into protons, electrons and oxygen-the cornerstone of photosynthesis. Now, a team of scientists has taken a major step toward understanding this process by deriving the precise structure of the catalytic metal-cluster center containing four manganese atoms and one calcium atom (Mn4Ca) that drives this water-splitting reaction. This catalytic center resides in a large protein complex, called photosystem II, found in plants, green algae, and cyanobacteria. The international team was led by scientists from LBNL, and includes scientists from Germany's Technical and Free Universities in Berlin, the Max Planck Institute in Mülheim, and from SSRL.

434

NETL F 451.1-1/1 Categorical Exclusion (CX) Designation Form  

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

Fuels Deployment Project The objective of this project is to provide additional CNG capacity at an existing CNG station. 07 22 2010 Brad Beauchamp Digitally signed by Brad...

435

NETL F 451.1-1/1 Categorical Exclusion (CX) Designation Form  

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

Michigan Green Fleets This Environmental Questionnaire is for the procurement of CNG converted vehicles. 10 08 2010 Brad Beauchamp Digitally signed by Brad Beauchamp DN:...

436

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

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

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...

437

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

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

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...

438

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

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

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...

439

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

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

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...

440

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

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

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...

Note: This page contains sample records for the topic "brad plummer 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.


441

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

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

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...

442

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

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

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...

443

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

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

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...

444

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

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

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...

445

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...

446

BABAR-PUB-01/12 SLAC-PUB-8854  

E-Print Network (OSTI)

.N. Brown,5 J. Button-Shafer,5 R.N. Cahn,5 A.R. Clark,5 Q. Fan,5 M.S. Gill,5 A. Gritsan,5 Y. Groysman,5 R R. Bernet,23 A. Khan,23 F. Muheim,23 S. Playfer,23 J.E. Swain,23 M. Falbo,24 C. Borean,25 C. Bozzi- annihilations near s = 10.6 GeV B. Aubert,1 D. Boutigny,1 J.-M. Gaillard,1 A. Hicheur,1 Y. Karyotakis,1 J

447

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

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

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...

448

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

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

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...

449

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

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

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...

450

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...

451

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...

452

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...

453

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...

454

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

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

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...

455

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

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

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...

456

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,...

457

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

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

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...

458

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...

459

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

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

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...

460

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...

Note: This page contains sample records for the topic "brad plummer 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

A possible redesign of the SLAC SLC damping rings  

Science Conference Proceedings (OSTI)

We describe a possible replacement for the SLC damping rings that would generate beams with normalized horizontal emittances of {gamma}{epsilon}{sub x} = 9 {times} 10{sup {minus}6} m-rad when uncoupled; this is more than three times smaller than that generated by the current rings. The primary difference between the new design and the current ring is the arc cell structure; the insertion regions, the kickers, and the RF are essentially unchanged. The new cell uses a single combined function bending magnet, roughly 70 cm in length, to replace the two bends, defocusing quadrupole, and defocusing sextupoles in the current FODO cell; the focusing quadrupole and sextupoles, used in the current cell, are also used in the new structure. The length of the new cell is identical to that of the current cell and thus nine of these new cells would simply replace the nine FODO cells in each arc of the rings.

Raubenheimer, T.O.; Early, R.; Limberg, T.; Moshammer, H.; Spencer, J.

1993-04-01T23:59:59.000Z

462

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

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

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...

463

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

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

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...

464

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

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

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...

465

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

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

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...

466

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

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

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...

467

Microsoft Word - 3230-SLAC-Report-Rev5.doc  

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

and the surface. Data from both systems were transferred to the analysis computer. Path lengths were calculated between the source and various receivers using the measured...

468

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

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

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...

469

SLAC Science Focus Area | Stanford Synchrotron Radiation Lightsource  

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

Ferrihydrite banner Nano biogenic uraninite Energy and biogeochemistry: Nuclear fuel and weapons production have produced radionuclide and heavy metal contamination in terrestrial...

470

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

471

Development of an X-band Photoinjector at SLAC  

E-Print Network (OSTI)

As part of a National Cancer Institute contract to develop a compact source of monoenergetic X-rays via Compton backscattering, we have completed the design and construction of a 5.5 cell Photoinjector operating at 11.424 GHz. Successful completion of this project will result in the capability of generating a monoenergetic X-ray beam, continuously tunable from 20 - 85 KeV. The immediate goal is the development of a Photoinjector producing 7 MeV, 0.5 nC, sub-picosecond electron bunches with normalized RMS emittances of approximately 1 pi-mm-mR at repetition rates up to 60 Hz. This beam will then be further accelerated to 60 MeV using a 1.05 m accelerating structure. This Photoinjector is somewhat different than the traditional 1.5 cell design both because of the number of cells and the symmetrically fed input coupler cell. Its operating frequency is also unique. Since the cathode is non-removable, cold-test tuning was somewhat more difficult than in other designs. We will present results of "bead-drop" measurements used in tuning this structure. Initial beam measurements are currently in progress and results will be presented as well as results of RF conditioning to high gradients at X-band. Details of the RF system, emittance-compensating solenoid, and cathode laser system as well as PARMELA simulations will also be presented.

A. E. Vlieks; G. Caryotakis; R. Loewen; D. Martin; A. Menegat; E. Landahl; C. DeStefano; B. Pelletier; N. C. Luhmamm Jr.

2002-08-13T23:59:59.000Z

472

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

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

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....

473

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

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

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...

474

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

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

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...

475

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

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

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...

476

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

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

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,...

477

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

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

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...

478

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

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

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...

479

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

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

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....

480

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

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

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...

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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.


481

SLAC National Accelerator Laboratory - BaBar Experiment Confirms...  

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

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...

482

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

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

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...

483

A Cryogenic RF Material Testing Facility at SLAC  

SciTech Connect

The authors have developed an X-band SRF testing system using a high-Q copper cavity with an interchangeable flat bottom for the testing of different materials. By measuring the Q of the cavity, the system is capable to characterize the quenching magnetic field of the superconducting samples at different power level and temperature, as well as the surface resistivity. This paper presents the most recent development of the system and testing results.

Guo, Jiquan; Martin, David; Tantawi, Sami; Yoneda, Charles; /SLAC

2012-06-22T23:59:59.000Z

484

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...

485

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...

486

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...

487

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...

488

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...

489

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...

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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...

491

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...

492

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...

493

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...

494

SLAC-PUB-11241 SCIPP 05/04  

E-Print Network (OSTI)

debris, is measured in collision, and is by def- inition proportional to the measured instantaneous lumi

California at Santa Cruz, University of

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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...

496

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...

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

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

auditorium at 2 a.m. EDT July 4 and waited for the latest announcement regarding the Higgs boson. When CERN Director-General Rolf-Dieter Heuer said the words - "I think we have it"...

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

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

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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...