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1

RF and Beam Diagnostic Instrumentation at the Advanced Photon Source (APS) Linear Accelerator (Linac)  

E-Print Network (OSTI)

RF and Beam Diagnostic Instrumentation at the Advanced Photon Source (APS) Linear Accelerator (Linac)

Grelick, A E; Arnold, N; White, M

1996-01-01T23:59:59.000Z

2

Status of the Linac Coherent Light Source  

Science Conference Proceedings (OSTI)

The Linac Coherent Light Source (LCLS) is a free electron laser facility in construction at Stanford Linear Accelerator Center. It is designed to operate in the wavelength range 0.15-1.5 nanometers. At the time of this conference, civil construction of new tunnels and buildings is complete, the necessary modifications to the SLAC linac are complete, and the undulator system and x-ray optics/diagnostics are being installed. The electron gun, 135 MeV injector linac and 250 MeV bunch compressor were commissioned in 2007. Accelerator commissioning activities are presently devoted to the achievement of performance goals for the completed 14 GeV linac.

Galayda, John N.; /SLAC

2011-11-04T23:59:59.000Z

3

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...

4

Linac Coherent Light SourCe  

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

Linac Linac Coherent Light SourCe after the Stanford Linear Accelerator Center (now the SLAC National Accelerator Laboratory) developed its two- mile-long linear accelerator (linac), it received approval from the Department of Energy to construct the Linac Coherent Light Source (LCLS), the first free electron laser (FEL) facility that would be able to produce x-rays short and bright enough that individual molecules could be imaged in their natural states. 40 years Genesis of the idea In 1992, Dr. Claudio Pellegrini, a professor at UCLA, first developed a proposal for a facility that would eventually become LCLS. The idea generated interest within the scientific community, and a design study report conducted by SLAC in the late 1990s led to the first

5

Science and Instrumentation for the Linac Coherent Light Source...  

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

Science and Instrumentation for the Linac Coherent Light Source WB00852.GIF (317 bytes) Where: SLAC Panofsky Auditorium When: Friday, October 15, 1999 (1:30 pm) Saturday,...

6

The Linac Coherent Light Source is  

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

Coherent Light Source is Coherent Light Source is a revolution in x-ray science. Just as the invention of x-ray machines a century ago astonishingly revealed the inside of our bodies and began new sciences, the world's first x-ray laser will open up unprecedented opportunities. Pioneering experiments will advance our understand ing of everything from the hidden physics inside planets, to how proteins function as the engines of life, to building nanotechnology devices for the backbone of future industry and technology. The applications are legion: medicine, electronics, biology, solid-state physics, nanotechnology, energy production, industry and fields that do not yet exist. Linac Coherent Light Source New Tools Create New Science The LCLS is dramatically different from any x-ray

7

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

8

Linac Coherent Light Source Overview | Department of Energy  

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

Linac Coherent Light Source Overview Linac Coherent Light Source Overview Linac Coherent Light Source Overview Addthis Description Take an animated tour of the Linac Coherent Light Source (LCLS). Follow the laser pulse from the injector gun all the way through to the Far Experimental Hall. Duration 5:50 Topic Physics Credit Energy Department Video MR. : The SLAC National Accelerator Laboratory is located in the heart of California's beautiful San Francisco Bay Area. Operated by Stanford University for the U.S. Department of Energy, SLAC has been home to the world's longest particle accelerator for nearly 50 years. In 2009 SLAC ushered in a new era in its long history of physics research with a new kind of laser called the Linac Coherent Light Source, or LCLS. The LCLS is the first laser in the world to produce hard X-rays, which can

9

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

10

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

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

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

11

Automated Operation of the APS LINAC using the Procedure Execution Manager  

E-Print Network (OSTI)

The Advanced Photon Source (APS) linear accelerator has two thermionic cathode rf guns and one photocathode rf gun. The thermionic guns are used primarily for APS operations while the photocathode gun is used as a free-electron laser (FEL) driver. With each gun requiring a different lattice and timing configuration, the need to change quickly between guns puts great demands on the accelerator operators. Using the Procedure Execution Manager (PEM), a software environment for managing automated procedures, we have made start-up and switch-over of the linac systems both easier and more reliable. The PEM is a graphical user interface written in Tcl/Tk that permits the user to invoke "machine procedures" and control their execution. It allows construction of procedures in a hierarchical, parallel fashion, which makes for efficient execution and development. In this paper, we discuss the features and advantages of the PEM environment as well the specifics of our procedures for the APS linac.

Soliday, R; Borland, M

2000-01-01T23:59:59.000Z

12

Linac Coherent Light Source Video and Multimedia Collection  

DOE Data Explorer (OSTI)

The Linac Coherent Light Source (LCLS), a DOE Scientific User Facility, began operation in 2009. SLAC's two-mile-long linear accelerator (linac) has long produced high-energy electrons for physics experiments. Now the linac is driving a new kind of laser, creating X-ray pulses more than a billion times brighter than the most powerful existing sources. Intense x-ray beams are not new. However, atoms are constantly moving or vibrating, and synchrotron X-ray sources produce long pulses which yield only blurred images of these motions. LCLS is the first source to produce X-rays that are both very intense and clumped into ultrafast pulses. By sequencing together images of the ultrasmall, taken with the ultrafast pulses of the LCLS, scientists are for the first time creating molecular movies, revealing the frenetic action of the atomic world for us to see. [Extracted, with edits, from http://lcls.slac.stanford.edu/WhatIsLCLS_1.aspx] The LCLS Multimedia gallery currently includes four short videos about the science and several clips that provide animated tours or flyovers of the facility and its instruments. Podcasts are an opportunity to hear key staff members address details of LCLS operations, and blog entries from five team members provide behind-the-scenes glimpses of this physics adventure.

13

An Overview of near-field vs. far-field radiation characteristics of the Linac Coherent Light Sources (LCLS)  

E-Print Network (OSTI)

An Overview of near-field vs. far-field radiation characteristics of the Linac Coherent Light Sources (LCLS)

Tatchyn, R

2005-01-01T23:59:59.000Z

14

EA-1904: Linac Coherent Light Source II at Stanford Linear Accelerator  

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

4: Linac Coherent Light Source II at Stanford Linear 4: Linac Coherent Light Source II at Stanford Linear Accelerator Laboratory, San Mateo, California EA-1904: Linac Coherent Light Source II at Stanford Linear Accelerator Laboratory, San Mateo, California Summary This EA evaluates the environmental impacts of the proposed construction of the Linac Coherent Light Source at SLAC National Accelerator Laboratory, Menlo Park, California. Public Comment Opportunities None available at this time. For more information, contact: Mr. Dave Osugi DOE SLAC Site Office 2575 Sand Hill Road, MS8A Menlo Park, CA 94025 Electronic mail: dave.osugi@sso.science.doe.gov Documents Available for Download March 7, 2012 EA-1904: Finding of No Significant Impact Linac Coherent Light Source II at Stanford Linear Accelerator Laboratory, San Mateo, CA

15

EA-1904: Linac Coherent Light Source II at Stanford Linear Accelerator  

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

04: Linac Coherent Light Source II at Stanford Linear 04: Linac Coherent Light Source II at Stanford Linear Accelerator Laboratory, San Mateo, California EA-1904: Linac Coherent Light Source II at Stanford Linear Accelerator Laboratory, San Mateo, California Summary This EA evaluates the environmental impacts of the proposed construction of the Linac Coherent Light Source at SLAC National Accelerator Laboratory, Menlo Park, California. Public Comment Opportunities None available at this time. For more information, contact: Mr. Dave Osugi DOE SLAC Site Office 2575 Sand Hill Road, MS8A Menlo Park, CA 94025 Electronic mail: dave.osugi@sso.science.doe.gov Documents Available for Download March 7, 2012 EA-1904: Finding of No Significant Impact Linac Coherent Light Source II at Stanford Linear Accelerator Laboratory, San Mateo, CA

16

Alternate Tunings for the Linac Coherent Light Source Photoinjector  

SciTech Connect

The Linac Coherent Light Source (LCLS) is an x-ray free-electron laser (FEL) project based on the SLAC linac. The LCLS Photoinjector beamline has been designed to deliver 10-ps long electron bunches of 1 nC with a normalized projected transverse emittance smaller than 1.2 mm-mrad at 135 MeV. Tolerances and regulation requirements are tight for this tuning. Half of the total emittance at the end of the injector comes from the ''cathode emittance'' which is 0.7 mm-mrad for our nominal 1nC tuning. As the ''cathode emittance'' scales linearly with laser spot radius, the emittance will be dramatically reduced for smaller radius, but this is only possible at lower charge. In particular, for a 0.2 nC charge, we believe we can achieve an emittance closer to 0.4 mm-mrad. This working point will be easier to tune and the beam quality should be much easier to maintain than for the 1 nC case. In the second half of this paper, we discuss optimum laser pulse shapes. We demonstrate that the benefits of the ellipsoidal shapes seem to be important enough so that serious investigations should be carried out in the production of such pulses.

Limborg-Deprey, C.; Emma, P.; /SLAC

2006-03-17T23:59:59.000Z

17

AUTOMATED OPERATION OF THE APS LINAC USING THE PROCEDURE EXECUTION MANAGER  

E-Print Network (OSTI)

The Advanced Photon Source (APS) linear accelerator has two thermionic cathode rf guns and one photocathode rf gun. The thermionic guns are used primarily for APS operations while the photocathode gun is used as a freeelectron laser (FEL) driver. With each gun requiring a different lattice and timing configuration, the need to change quickly between guns puts great demands on the accelerator operators. Using the Procedure Execution Manager (PEM), a software environment for managing automated procedures, we have made start-up and switchover of the linac systems both easier and more reliable. The PEM is a graphical user interface written in Tcl/Tk that permits the user to invoke machine procedures and control their execution. It allows

unknown authors

2000-01-01T23:59:59.000Z

18

Beam-based Feedback for the Linac Coherent Light Source  

SciTech Connect

Beam-based feedback control loops are required by the Linac Coherent Light Source (LCLS) program in order to provide fast, single-pulse stabilization of beam parameters. Eight transverse feedback loops, a 6 x 6 longitudinal feedback loop, and a loop to maintain the electron bunch charge were successfully prototyped in MATLAB for the LCLS, and have been maintaining stability of the LCLS electron beam at beam rates up to 30Hz. In the final commissioning phase of LCLS the beam will be operating at up to 120Hz. In order to run the feedback loops at beam rate, the feedback loops will be implemented in EPICS IOCs with a dedicated ethernet multi-cast network. This paper will discuss the design of the beam-based Fast Feedback System for LCLS. Topics include MATLAB feedback prototyping, algorithm for 120Hz feedback, network design for fast data transport, actuator and sensor design for single-pulse control and sensor readback, and feedback configuration and runtime control.

Fairley, D.; Allison, S.; Chevtsov, S.; Chu, P.; Decker, F.J.; Emma, P.; Frisch, J.; Himel, T.; Kim, K.; Krejcik, P.; Loos, H.; Lahey, T.; Natampalli, P.; Peng, S.; Rogind, D.; Shoaee, H.; Straumann, T.; Williams, E.; White, G.; Wu, J.; Zelazney, M.; /SLAC

2010-02-11T23:59:59.000Z

19

The Coherent X-ray Imaging (CXI) Instrument at the Linac Coherent Light Source (LCLS)  

Science Conference Proceedings (OSTI)

The Linac Coherent Light Source (LCLS) has become the first ever operational hard X-ray Free Electron Laser in 2009. It will operate as a user facility capable of delivering unique research opportunities in multiple fields of science. The LCLS and the LCLS Ultrafast Science Instruments (LUSI) construction projects are developing instruments designed to make full use of the capabilities afforded by the LCLS beam. One such instrument is being designed to utilize the LCLS coherent beam to image with high resolution any sub-micron object. This instrument is called the Coherent X-ray Imaging (CXI) instrument. This instrument will provide a flexible optical system capable of tailoring key beam parameters for the users. A suite of shot-to-shot diagnostics will also be provided to characterize the beam on every pulse. The provided instrumentation will include multi-purpose sample environments, sample delivery and a custom detector capable of collecting 2D data at 120 Hz. In this article, the LCLS will be briefly introduced along with the technique of Coherent X-ray Diffractive Imaging (CXDI). A few examples of scientific opportunities using the CXI instrument will be described. Finally, the conceptual layout of the instrument will be presented along with a description of the key requirements for the overall system and specific devices required.

Boutet, Sebastien

2011-08-16T23:59:59.000Z

20

FINDING OF NO SIGNIFICANT IMPACT FOR LINAC COHERENT LIGHT SOURCE-Il  

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

FINDING FINDING OF NO SIGNIFICANT IMPACT FOR LINAC COHERENT LIGHT SOURCE-Il PROJECT SLAC NATIONAL ACCELERATOR LABORATORY AGENCY: U. S. Department of Energy (DOE) ACTION: Finding of No Significant Impact (FONSI) SUMMARY: The U. S. Department of Energy (DOE) has completed an Environmental Assessment (DOE/EA-1904) on a project to expand the existing Linac Coherent Light Source (LCLS) facility at the SLAC National Accelerator Laboratory (SLAC). One of SLAC's major scientific facilities is the LCLS, the world's first hard X-ray free electron laser. The LCLS X-ray laser beams enable the simultaneous investigation of a material's electronic and structural properties on the size (sub-nanometer) and time (femto-second) scales that determine their function. Research programs at SLAC include materials science, catalytic sciences, structural molecular biology, and molecular environmental

Note: This page contains sample records for the topic "aps linac coherent" 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

Environmental Assessment for Linac Coherent Light Source Experimental Facility (12/02)  

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

Stanford Stanford Linear A ccelerator Center DOE/EA-1426 Environmental Assessment for Linac Coherent Light Source Experimental Facility LCLS December 2002 LCLS Environmental Assessment DOE/EA-1426 December 2002 Page - i - Environmental Assessment for LCLS Experimental Facility Table of Contents Preface ............................................................................................................................................ iii 1.0 Summary ................................................................................................................................... 1 2.0 Purpose and Need for LCLS ..................................................................................................... 6 3.0 Description of Proposed Action and Alternatives

22

Michelson interferometer design for Linac Coherent Light Source (LCLS) applications in the 15 Anstrom to 1.5 Anstrom wavelength range  

E-Print Network (OSTI)

Michelson interferometer design for Linac Coherent Light Source (LCLS) applications in the 15 Anstrom to 1.5 Anstrom wavelength range

Tatchy, R

1999-01-01T23:59:59.000Z

23

Commissioning of the Electron Line of the Linac Coherent Light Source. Dose Rate Measurements and Simulations  

Science Conference Proceedings (OSTI)

The Linac Coherent Light Source at the SLAC National Accelerator Laboratory (operated by Stanford University for the US Department of Energy) is the world's first hard X-ray Free Electron Laser machine. It uses high energy electrons delivered by a linac to create ultrafast and brilliant X-ray pulses that can be used as a 'high-speed' camera to obtain images of atoms and molecules. LCLS is a pioneer machine and, as such, its design has encountered unprecedented challenges, the solutions to which will benefit future facilities of its kind across the globe. This article describes the radiation protection aspects of LCLS electron beamlines. Special emphasis is put on the successful commissioning of the LCLS electron line, where, for all examined loss sources, the measured prompt and residual dose rates are in agreement with or below the values predicted through detailed Monte Carlo simulations, used earlier to design the shielding.

Santana Leitner, M; Bauer, J.M.; Fasso, A.; Liu, J.C.; Mao, X.S.; Prinz, A.; Rokni, H.; /SLAC; Sanami, T.; /SLAC /KEK, Tsukuba; Vollaire, J.; /SLAC

2009-05-20T23:59:59.000Z

24

Robust CsBr/Cu Photocathodes for the Linac Coherent Light Source  

Science Conference Proceedings (OSTI)

The linac coherent light source (LCLS), an x-ray free-electron laser project presently under construction at SLAC, uses a 2.856 GHz rf photocathode gun with a copper cathode for its electron source. While the copper cathode is performing well for the LCLS project, a cathode material with higher quantum efficiency would reduce the drive laser requirements and allow a greater range of operating conditions. Therefore a robust CsBr/Cu photocathode with greater than 50 times the quantum yield at 257 nm relative to the present LCLS copper cathode has been investigated. Preliminary experiments using a dedicated electron source development test stand at SLAC/SSRL are encouraging and are presented in this paper.

Maldonado, Juan R.; /Stanford U., Phys. Dept.; Liu, Zhi; Dowell, D.H.; Kirby, Robert E.; Sun, Yun; Pianetta, Piero; /SLAC; Pease, Fabian; /Stanford U., Phys. Dept.

2011-06-21T23:59:59.000Z

25

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

26

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

27

USE OF COHERENT TRANSITION RADIATION TO SET UP THE APS RF THERMIONIC GUN TO PRODUCE HIGH-BRIGHTNESS BEAMS FOR SASE FEL EXPERIMENTS ?  

E-Print Network (OSTI)

We describe use of the Advanced Photon Source (APS) rf thermionic gun [1], alpha-magnet beamline, and linac [2] to produce a stable high-brightness beam in excess of 100 amperes peak current with normalized emittance of 10 ? mm-mrad. To obtain peak currents greater than 100 amperes, the rf gun system must be tuned to produce a FWHM bunch length on the order of 350 fs. Bunch lengths this short are measured using coherent transition radiation (CTR) produced when the rf gun beam, accelerated to 40 MeV, strikes a metal foil. The CTR is detected using a Golay detector attached to one arm of a Michelson interferometer. The alpha-magnet current and gun rf phase are adjusted so as to maximize the CTR signal at the Golay detector, which corresponds to the minimum bunch length. The interferometer is used to measure the autocorrelation of the CTR. The minimum phase approximation [3] is used to derive the bunch profile from the autocorrelation. The high-brightness beam is accelerated to 217 MeV and used to produce self-amplified spontaneous emission (SASE) in five APS undulators installed in the Low- Energy Undulator Test Line (LEUTL) experiment hall [4]. Initial optical measurements showed a gain length of 1.3 m at 530 nm. 1

unknown authors

2000-01-01T23:59:59.000Z

28

APS User News-at-a-Glance, Issue 5  

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

5; March 1, 2001 5; March 1, 2001 Contents: 1. APS Deputy Director John Galayda Accepts Top LCLS Post Applications Being Taken for Third Neutron and X-ray Summer School APS User Re-training Begins Weekly User Science Seminars Begin March 23 Wanted: APS User Activity Report 2000 Submissions 1. APS Deputy Director John Galayda Accepts Top LCLS Post (Contact: rt@aps.anl.gov) In a February 23, 2001, memo to APS staff, David Moncton announced with "great regret, but also with great expectations" that he had accepted John Galayda's resignation from the APS to take a position as director of the Linac Coherent Light Source (LCLS) project at the Stanford Linear Accelerator Center. Moncton wrote that "John has made an extraordinary contribution to the APS and to Argonne National

29

Use of Coherent Transition Radiation to Set Up the APS RF Thermionic Gun to Produce High-Brightness Beams for SASE FEL Experiments  

E-Print Network (OSTI)

We describe use of the Advanced Photon Source (APS) rf thermionic gun, alpha magnet beamline, and linac to produce a stable high-brightness beam in excess of 100 amperes peak current with normalized emittance of 10 pi mm-mrad. To obtain peak currents greater than 100 amperes, the rf gun system must be tuned to produce a FWHM bunch length on the order of 350 fs. Bunch lengths this short are measured using coherent transition radiation (CTR) produced when the rf gun beam, accelerated to 40 MeV, strikes a metal foil. The CTR is detected using a Golay detector attached to one arm of a Michelson interferometer. The alpha magnet current and gun rf phase are adjusted so as to maximize the CTR signal at the Golay detector, which corresponds to the minimum bunch length. The interferometer is used to measure the autocorrelation of the CTR radiation. The minimum phase approximation is used to derive the bunch profile from the autocorrelation. The high-brightness beam is accelerated to 217 MeV and used to produce SASE in...

Sereno, N S; Lumpkin, Alex H; Sereno, Nicholas; Borland, Michael; Lumpkin, Alex

2000-01-01T23:59:59.000Z

30

Creating an EPICS Based Test Stand Development System for a BPM Digitizer of the Linac Coherent Light Source  

SciTech Connect

The Linac Coherent Light Source (LCLS) is required to deliver a high quality electron beam for producing coherent X-rays. As a result, high resolution beam position monitoring is required. The Beam Position Monitor (BPM) digitizer acquires analog signals from the beam line and digitizes them to obtain beam position data. Although Matlab is currently being used to test the BPM digitizer?s functions and capability, the Controls Department at SLAC prefers to use Experimental Physics and Industrial Control Systems (EPICS). This paper discusses the transition of providing similar as well as enhanced functionalities, than those offered by Matlab, to test the digitizer. Altogether, the improved test stand development system can perform mathematical and statistical calculations with the waveform signals acquired from the digitizer and compute the fast Fourier transform (FFT) of the signals. Finally, logging of meaningful data into files has been added.

Not Available

2011-06-22T23:59:59.000Z

31

APS User News, Issue 58  

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

8, November 11, 2009 8, November 11, 2009 CONTENTS MESSAGE FROM MURRAY SCIENCE NEWS 1. Fast CCD Detector Collaboration 2. Science & Research Highlights The Power of Proteins: Prion Diseases Demystified Bacterium Helps in the Formation of Gold Getting to the Roots of Lethal Hairs Creating a Precise Atomic-Scale Map of Quantum Dots USER MATTERS 3. Users and the Flu Season 4. Workshop on the Role of Synchrotron Radiation in Solving Scientific Challenges in Advanced Nuclear Energy Systems 5. First Experiment at the Linac Coherent Light Source 6. New Postings Available on Employment Bulletin Board FACILITY NEWS 7. Recent SAC Meeting Focuses on APS Upgrade 8. The Life Sciences Council at the APS 9. Fitness Center Now Open in New Location AWARDS AND HONORS 10. APS Users Awarded 2009 Nobel Prize in Chemistry

32

Prospects for high power Linac Coherent Light Source (LCLS) development in the 1000{angstrom} {minus} 1{angstrom} wavelength range  

Science Conference Proceedings (OSTI)

Electron bunch requirements for single-pass saturation of a Free-Electron Laser (FEL) operating at full transverse coherence in the Self-Amplified Spontaneous Emission (SASE) mode include: (1) a high peak current, (2) a sufficiently low relative energy spread, and (3) a transverse emittance {var_epsilon}[r-m] satisfying the condition {var_epsilon} {le} {lambda}A/4{pi}, where {lambda}[m] is the output wavelength of the FEL. In the insertion device that induces the coherent amplification, the prepared electron bunch must be kept on a trajectory sufficiently collinear with the amplified photons without significant dilution of its transverse density. In this paper we discuss a Linac Coherent Light Source (LCLS) based on a high energy accelerator such as, e.g., the 3km S-band structure at the Stanford Linear Accelerator Center (SLAC), followed by a long high-precision undulator with superimposed quadrupole (FODO) focusing, to fulfill the given requirements for SASE operation in the 1000{Angstrom}--1{Angstrom} range. The electron source for the linac, an RF gun with a laser-excited photocathode featuring a normalized emittance in the 1--3 mm-mrad range, a longitudinal bunch duration of the order of 3 ps, and approximately 10{sup {minus}9} C/bunch, is a primary determinant of the required low transverse and longitudinal emittances. Acceleration of the injected bunch to energies in the 5--25 GeV range is used to reduce the relative longitudinal energy spread in the bunch, as well as to reduce the transverse emittance to values consistent with the cited wavelength regime. Two longitudinal compression stages are employed to increase the peak bunch current to the 2--5 kA levels required for sufficiently rapid saturation. The output radiation is delivered, via a grazing-incidence mirror bank, to optical instrumentation and a multi-user beam line system. Technological requirements for LCLS operation at 40{Angstrom}, 4.5{Angstrom}, and 1.5{Angstrom} are examined.

Tatchyn, R.; Bane, K.; Boyce, R. [and others

1994-03-01T23:59:59.000Z

33

Optical Design of a Broadband Infrared Spectrometer for Bunch Length Measurement at the Linac Coherent Light Source  

SciTech Connect

The electron pulses generated by the Linac Coherent Light Source at the SLAC National Accelerator Laboratory occur on the order of tens of femtoseconds and cannot be directly measured by conventional means. The length of the pulses can instead be reconstructed by measuring the spectrum of optical transition radiation emitted by the electrons as they move toward a conducting foil. Because the emitted radiation occurs in the mid-infrared from 0.6 to 30 microns a novel optical layout is required. Using a helium-neon laser with wavelength 633 nm, a series of gold-coated off-axis parabolic mirrors were positioned to direct a beam through a zinc selenide prism and to a focus at a CCD camera for imaging. Constructing this layout revealed a number of novel techniques for reducing the aberrations introduced into the system by the off-axis parabolic mirrors. The beam had a recorded radius of less than a millimeter at its final focus on the CCD imager. This preliminary setup serves as a model for the spectrometer that will ultimately measure the LCLS electron pulse duration.

Williams, Kiel; /SLAC

2012-09-07T23:59:59.000Z

34

Linac Coherent Light Source II (LCLS-II) Conceptual Design Report  

Science Conference Proceedings (OSTI)

The LCLS-II Project is designed to support the DOE Office of Science mission, as described in the 22 April 2010 Mission Need Statement. The scope of the Project was chosen to provide an increase in capabilities and capacity for the facility both at project completion in 2017 and in the subsequent decade. The Project is designed to address all points of the Mission Need Statement (MNS): (1) Expanded spectral reach; (2) Capability to provide x-ray beams with controllable polarization; (3) Capability to provide 'pump' pulses over a vastly extended range of photon energies to a sample, synchronized to LCLS-II x-ray probe pulses with controllable inter-pulse time delay; and (4) Increase of user access through parallel rather than serial x-ray beam use within the constraint of a $300M-$400M Total Project Cost (TPC) range. The LCLS-II Project will construct: (1) A hard x-ray undulator source (2-13 keV); (2) A soft x-ray undulator source (250-2,000 eV); (3) A dedicated, independent electron source for these new undulators, using sectors 10-20 of the SLAC linac; (4) Modifications to existing SLAC facilities for the injector and new shielded enclosures for the undulator sources, beam dumps and x-ray front ends; (5) A new experiment hall capable of accommodating four experiment stations; and (6) Relocation of the two soft x-ray instruments in the existing Near Experiment Hall (NEH) to the new experiment hall (Experiment Hall-II). A key objective of LCLS-II is to maintain near-term international leadership in the study of matter on the fundamental atomic length scale and the associated ultrafast time scales of atomic motion and electronic transformation. Clearly, such studies promise scientific breakthroughs in key areas of societal needs like energy, environment, health and technology, and they are uniquely enabled by forefront X-ray Free Electron Laser (X-FEL) facilities. While the implementation of LCLS-II extends to about 2017, it is important to realize that LCLS-II only constitutes a stepping stone to what we believe is needed over a longer time scale. At present, a practical time horizon for planning is about 15 years into the future, matching that of worldwide planning activities for competitive X-FEL facilities in Europe and Asia. We therefore envision LCLS-II as an important stage in development to what is required by about 2025, tentatively called LCLS-2025, for continued US leadership even as new facilities around the world are being completed. We envision LCLS primarily as a hard x-ray FEL facility with some soft x-ray capabilities. A survey of planned X-FEL facilities around the world suggests that US planning to 2025 needs to include an internationally competitive soft x-ray FEL facility which complements the LCLS plans outlined in this document.

Stohr, J

2011-11-16T23:59:59.000Z

35

The soft x-ray instrument for materials studies at the linac coherent light source x-ray free-electron laser  

Science Conference Proceedings (OSTI)

The soft x-ray materials science instrument is the second operational beamline at the linac coherent light source x-ray free electron laser. The instrument operates with a photon energy range of 480-2000 eV and features a grating monochromator as well as bendable refocusing mirrors. A broad range of experimental stations may be installed to study diverse scientific topics such as: ultrafast chemistry, surface science, highly correlated electron systems, matter under extreme conditions, and laboratory astrophysics. Preliminary commissioning results are presented including the first soft x-ray single-shot energy spectrum from a free electron laser.

Schlotter, W. F.; Turner, J. J.; Rowen, M.; Holmes, M.; Messerschmidt, M.; Moeller, S.; Krzywinski, J.; Lee, S.; Coffee, R.; Hays, G. [LCLS, SLAC National Accelerator Laboratory, 2575 Sand Hill Rd., Menlo Park, California 94025 (United States); Heimann, P. [LCLS, SLAC National Accelerator Laboratory, 2575 Sand Hill Rd., Menlo Park, California 94025 (United States); Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States); Krupin, O. [LCLS, SLAC National Accelerator Laboratory, 2575 Sand Hill Rd., Menlo Park, California 94025 (United States); European XFEL GmbH, Albert-Einstein-Ring 19, 22761 Hamburg (Germany); Soufli, R.; Fernandez-Perea, M.; Hau-Riege, S. [Lawrence Livermore National Laboratory, 7000 East Avenue, Livermore, California 94550 (United States); Kelez, N. [Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States); Beye, M.; Gerken, N.; Sorgenfrei, F.; Wurth, W. [Institute for Experimental Physics and CFEL, University of Hamburg, Luruper Chaussee 149, 22761 Hamburg (Germany); and others

2012-04-15T23:59:59.000Z

36

APS101  

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Advanced Photon Source User Orientation (APS101) View or print an APS101 study guide (PDF) Take the APS101 Course and Exam Now Take the APS...

37

X-ray-optical cross-correlator for gas-phase experiments at the Linac Coherent Light Source free-electron laser  

Science Conference Proceedings (OSTI)

X-ray-optical pump-probe experiments at the Linac Coherent Light Source (LCLS) have so far been limited to a time resolution of 280 fs fwhm due to timing jitter between the accelerator-based free-electron laser (FEL) and optical lasers. We have implemented a single-shot cross-correlator for femtosecond x-ray and infrared pulses. A reference experiment relying only on the pulse arrival time information from the cross-correlator shows a time resolution better than 50 fs fwhm (22 fs rms) and also yields a direct measurement of the maximal x-ray pulse length. The improved time resolution enables ultrafast pump-probe experiments with x-ray pulses from LCLS and other FEL sources.

Schorb, S.; Cryan, J. P.; Glownia, J. M.; Bionta, M. R.; Coffee, R. N.; Swiggers, M.; Carron, S.; Castagna, J.-C.; Bozek, J. D.; Messerschmidt, M.; Schlotter, W. F.; Bostedt, C. [Linac Coherent Light Source, SLAC National Accelerator Laboratory, P.O. Box 20450, Stanford, California 94309 (United States); Gorkhover, T. [Institut fuer Optik und Atomare Physik, Technische Universitaet Berlin, Hardenbergstr. 36, 10623 Berlin (Germany); Erk, B.; Boll, R.; Schmidt, C.; Rudenko, A. [Max-Planck Advanced-Study-Group at CFEL, Notkestr. 85, 22607 Hamburg (Germany); Max-Planck-Institut f. Kernphysik, Saupfercheckweg 1, 69117 Heidelberg (Germany); Rolles, D. [Max-Planck Advanced-Study-Group at CFEL, Notkestr. 85, 22607 Hamburg (Germany); Max-Planck-Institut f. med. Forschung, Jahnstr. 29, 69120 Heidelberg (Germany); Rouzee, A. [Max-Born-Institut, Max-Born-Str. 2, 12489 Berlin (Germany)

2012-03-19T23:59:59.000Z

38

Challenge Met as APS Sends Final Chambers to LCLS  

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

A Marriage of Hardware and Hard Work A Marriage of Hardware and Hard Work Shaken but Not Stirred 2008 Rosalind Franklin Young Investigator Award The 2008 3-Way Meeting In R&D, Super X-rays Mark Many Spots APS News Archives: 2012 | 2011 | 2010 | 2009 2008 | 2007 | 2006 | 2005 2004 | 2003 | 2002 | 2001 2000 Subscribe to APS News rss feed Challenge Met as APS Sends Final Chambers to LCLS MAY 21, 2008 Bookmark and Share The final five (of 40) extruded aluminum vacuum chambers for the Linac Coherent Light Source (LCLS) undulator system have been shipped from Argonne National Laboratory - where the chambers were designed and assembled - to the Stanford Linear Accelerator Center, where the LCLS "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

39

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.

40

APS Science 2006.  

DOE Green Energy (OSTI)

In my five years as the Director of the Advanced Photon Source (APS), I have been fortunate to see major growth in the scientific impact from the APS. This year I am particularly enthusiastic about prospects for our longer-term future. Every scientific instrument must remain at the cutting edge to flourish. Our plans for the next generation of APS--an APS upgrade--got seriously in gear this year with strong encouragement from our users and sponsors. The most promising avenue that has emerged is the energy-recovery linac (ERL) (see article on page xx), for which we are beginning serious R&D. The ERL{at}APS would offer revolutionary performance, especially for x-ray imaging and ultrafast science, while not seriously disrupting the existing user base. I am very proud of our accelerator physics and engineering staff, who not only keep the current APS at the forefront, but were able to greatly impress our international Machine Advisory Committee with the quality of their work on the possible upgrade option (see page xx). As we prepare for long-term major upgrades, our plans to develop and optimize all the sectors at APS in the near future are advancing. Several new beamlines saw first light this year, including a dedicated powder diffraction beamline (11-BM), two instruments for inelastic x-ray scattering at sector 30, and the Center for Nanoscale Materials (CNM) Nanoprobe beamline at sector 26. Our partnership in the first x-ray free-electron laser (LCLS) to be built at Stanford contributes to revolutionary growth in ultrafast science (see page xx), and we are developing a pulse chirping scheme to get ps pulses at sector 7 of the APS within a year or so. In this report, you will find selected highlights of scientific research at the APS from calendar year 2006. The highlighted work covers diverse disciplines, from fundamental to applied science. In the article on page xx you can see the direct impact of APS research on technology. Several new products have emerged from work at the APS, to complement the tremendous output of work in basic science, which often has payoff in technology but over decades rather than years. Highlights in this report also reflect the relevance of APS work to Department of Energy missions, for example a route to more efficient fuel cells (page xx mr-88-073113) addresses the energy challenge, and natural approaches to cleaning up the environment.

Gibson, J. M.; Fenner, R. B.; Long, G.; Borland, M.; Decker, G.

2007-05-24T23:59:59.000Z

Note: This page contains sample records for the topic "aps linac coherent" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
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We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


41

SLAC Linac Coherent Light Source  

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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...

42

SAC - Linac Coherent Light Source  

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| Contact Us | Visitor Information User Resources LUSI Cost & Schedule Glossary News LCLS SAC LCLS FAC LCLS Science LCLS Machine FEL Resources Stanford University logo Stanford...

43

Linac Energy Management for LCLS  

SciTech Connect

Linac Energy Management (LEM) is a control system program that scales magnet field set-point settings following a change in beam energy. LEM is necessary because changes in the number, phase, and amplitude of the active klystrons change the beam's rigidity, and therefore, to maintain constant optics, one has to change focusing gradients and bend fields accordingly. This paper describes the basic process, the control system application programs we developed for LEM, and some of the implementation lessons learned at the Linac Coherent Light Source (LCLS).

Chu, Chungming; /SLAC; Iverson, Richard; /SLAC; Krejcik, Patrick; /SLAC; Rogind, Deborah; /SLAC; White, Greg; /SLAC; Woodley, Mark; /SLAC

2012-07-05T23:59:59.000Z

44

APS Podcasts  

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Professor Ernst Bauer, Arizona State University - APS Colloquium: Sept. 8, 2004 Seeing Stripes: Competition and Complexity in High-Temperature Superconductions September 30, 2005;...

45

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

46

The Linac Injector For The ANL 7 Ge V Advanced Photon Source  

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

Injector For The ANL 7 Ge V Injector For The ANL 7 Ge V Advanced Photon Source A. Nassiri, W. Wesolowski, and G. Mavrogenes Argonne National Laboratory Submitted to the 1990 LINAC Conferece Albuquerque, New Mexico LS-154 9/28/90 TEE LINAC INJECTOR FOR TEE ANL 7 G<.iJ,V ADVANCED PHOTON SOORCE* A. Nassiri, W. Wesolowski, and G. Mavrogenes Argonne National Laboratory 9700 South Cass Avenue Argonne, IL 60439 USA Abstract The Argonne Advanced Photon Source (APS) linac system consists of a 200 MeV electron linac, a positron converter, and a 450 MeV positron linac. Design parameters and computer simulations of the two linac systems are presented. Introduction The Argonne Advanced Photon Source is a 7 GeV synchrotron X-Ray facility. The APS machine parameters have been described.

47

APS User News-at-a-Glance, Issue 3  

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Contents: New Argonne Director Tours APS Holiday Closings Announced First APS User Activity Report Posted on the Web APS User Statistics Be Generous this Season: Share Your Research Results with Colleagues! APS User News-at-a-Glance Issue 3; December 13, 2000 All of us at the Advanced Photon Source wish you a happy holiday season and a scientifically productive new year! 1. New Argonne Director Tours APS (Contact: gks@aps.anl.gov) Photo of Hermann Grunder During a recent tour of the APS, Hermann Grunder, newly appointed Director of Argonne National Laboratory, expressed great enthusiasm for the quality and diversity of scientific research being conducted here. Grunder walked the complete accelerator complex, beginning in the Linac, viewing the Low Energy Undulator Test Line, walking through

48

AP R  

Office of Legacy Management (LM)

. . aw wL2--\ AP R 2 2 i386 NE-23 Elimination of the Chupadera Mesa and Los Alamos County Industrial Waste Line Sites from Further Consideration for FUSRAP Inclusion Carlos E. Garcia, Director Environmental Safety and Health Division Albuquerque Operations Office The enclosed material is being provided to you to document the final actiors taken under the Department's Formerly Utilized Sites Remedial Action Program (FUSRAP) for the Chupadera Kesa area and the Los Alamos County Industrial Waste Lines, New Mexico. Copies of designation/ elimination reviews for each of the sites are enclosed for your records. he have determined tiiat neither site warrants inclusion in the remedial action program. Primary source, c of data for this determination were two

49

APS Technical Update Index  

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

Updates Technical Updates are notices that share beamline technical and operations developments with APS users. For additional information contact the APS User Technical Interface....

50

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

51

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

52

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

53

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

54

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...

55

SLAC Linac Coherent Light Source User Site  

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

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

56

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...

57

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...

58

Bioimaging Workshop - Linac Coherent Light Source  

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

| Contact Us | Visitor Information User Resources LUSI Cost & Schedule Glossary News LCLS SAC LCLS FAC LCLS Science LCLS Machine FEL Resources Stanford University logo Stanford...

59

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...

60

SLAC Linac Coherent Light Source User Site  

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

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...

Note: This page contains sample records for the topic "aps linac coherent" 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 Linac Coherent Light Source User Site  

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

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

62

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

63

Magnet innovations for linacs  

Science Conference Proceedings (OSTI)

It is possible to produce large magnetic fields at the aperture of permanent magnet quadrupoles, even when the magnetic aperture is very small. That, combined with their compactness, makes permanent magnet quadrupoles very powerful components of small aperture linacs. Results will be presented about past and present work on both fixed and variable strength permanent magnets suitable for use in and around linacs.

Halbach, K.

1986-06-01T23:59:59.000Z

64

APS 2002 Conferences  

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section tracks conferences and workshops of interest to the APS researcher community. Photonics West. (Jan. 19-25) San Jose, CA APS March Meeting 2002. (Mar. 18-22) Indianapolis,...

65

APS Renewal White Paper  

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| 2006 | 2005 2004 | 2003 | 2002 | 2001 2000 Subscribe to APS News rss feed APS Renewal White Paper NOVEMBER 21, 2008 Bookmark and Share The white paper prepared for the...

66

APS News 2004  

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2004 | 2003 | 2002 | 2001 2000 Subscribe to APS News rss feed APS News Articles 2004 Bio-CAT Research Selected as "Breakthrough" for 2004 (Dec. 21) Fig. 1. In ice, each water...

67

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

68

Global Green Energy ApS | Open Energy Information  

Open Energy Info (EERE)

ApS Jump to: navigation, search Name Global Green Energy ApS Place Aarhus C, Denmark Zip DK- 8000 Sector Wind energy Product Wind farm project developer. References Global Green...

69

APS Users Organization  

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

APSUO APSUO By-Laws Steering Commitee Employment Meetings Compton Award Franklin Award APS Users Organization The APSUO is responsible for advising the APS Associate Laboratory Director in the following areas: The Organization will serve as an advocacy group for the Facility and its user community. The Organization will provide advice to the ALD on matters affecting the user community. The Organization will assure good communication between the APS user community and the APS management. APSUO By-Laws The by-laws upon which the APS User Organization is based. List of Steering Committee Members Steering committee for the APS Users Organization. Employment Bulletin Board APS-related employment opportunities. APSUO Steering Committee Meetings Minutes and presentations from the APSUO meetings.

70

APS LOM Shop Usage  

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Division XSD Groups Industry Argonne Home Advanced Photon Source APS LOM Shop Usage User Shop Access - Policies and Procedures User Shop Orientation User Shop...

71

APS Floor Coordinators  

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

to: cee@aps.anl.gov SecurityPrivacy Notice APS Floor Coordinators LOM COORDINATORS CAT INFORMATION 431 A,B,D Vacant SRI-CAT, Sectors 1-3 C FC Office E SRI-CAT, Sector 4 432 A...

72

APS SAC Policy  

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APS Scientific Advisory Committee Policy Adopted 1/21/2003 The Scientific Advisory Committee (SAC) inherits and expands the role of the former Program Evaluation Board (PEB). It advises the Associate Laboratory Director for the APS (ALD/APS) with the following responsibilities: Scope To evaluate the scientific output and facility utilization for all APS sectors. To examine performance and recommend appropriate beamtime allocation for existing Collaborative Access Teams (CATs). To evaluate Letters of Intent and scientific proposals for new and reconstituted CATs. To provide advice to and review decisions by APS management on special operations support for CATs. To review proposals for Partner User access, a new access mode that will guarantee 10-30% the beam time per year on any sector for a finite

73

APS User News, Issue 84  

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4, August 28, 2013 CONTENTS DIRECTOR'S CORNER APS UPGRADE NEWS by George Srajer, APS Upgrade Director USER MATTERS -- Three-Way Meeting Hosted at APS -- Tech Tuesdays -- Get Your...

74

NSLS Booster & Linac Ring  

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

Booster & Linac Ring Booster & Linac Ring Booster Operating Parameters (pdf) Lattice Information (pdf) Mechanical Drawing (pdf) Standard Operating Mode Electrons are injected into the NSLS storage rings from a 750 MeV booster synchrotron fed by a 120 MeV linac. The electrons are first produced in a 100 KeV triode electron gun. The gun is pulsed at the booster revolution period, 94.6 nsec, seven times per booster cycle. Each pulse is 5 nsec long and supplies about 17 microbunches in the linac. After acceleration in the linac, the beam is injected into the booster on seven successive turns. Multi-turn injection in the booster is accomplished in the following way: The beam is deflected into the booster by a septum magnet. The first linac pulse goes around the booster and returns to the injection point just as

75

IMPACT simulation and the SNS linac beam  

E-Print Network (OSTI)

dynamics studies of the SNS linac systems were performedIMPACT SIMULATION AND THE SNS LINAC BEAM * Y. Zhang 1 , J.tracking simulations for the SNS linac beam dynamics studies

Zhang, Y.

2009-01-01T23:59:59.000Z

76

Zimbra for APS Users Videos  

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

Video Library APS Colloquium Getting Started with Epics * 2005 * 2004 "Zimbra for APS Users" Workshop Note: Recommend viewing with Firefox browser. If you have trouble with the...

77

APS Experiment Safety Review Board  

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

Meeting Minutes * Laser Safety Notifications Charter for the APS Laser Safety Committee 1. Purpose The Laser Safety Committee advises APS Management on laser safety matters,...

78

APS User News, Issue 67  

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Overview Visiting the APS Mission & Goals Find People Organization Charts Committees Job Openings User Information Prospective Users New Users Current Users APS User Portal...

79

APS Technical Update - No. 21  

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1997 APS TECHNICAL UPDATE - No. 21 Subject: Shielding Configuration Control Policy and Procedure Attached is a policy and procedure regarding APS Beamline Shielding Configuration...

80

APS Scientific Advisory Committee  

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

Scientific Advisory Committee (SAC) Scientific Advisory Committee (SAC) The SAC is responsible for advising the APS Associate Laboratory Director in the following areas: To evaluate the scientific output and facility utilization for all APS sectors. To examine performance and recommend appropriate beamtime allocation for existing Collaborative Access Teams (CATs). To evaluate Letters of Intent and scientific proposals for new and reconstituted CATs. To provide advice to and review decisions by APS management on special operations support for CATs. To review Special Program proposals, a new mode of access that will guarantee 10-30% the beam time per year on any sector for a finite period of time. To assist the APS with development of policies and other issues as appropriate. SAC members Participants in the Scientific Advisory Committee.

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


81

APS 2003 Conferences  

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

interest to the APS researcher community. Frontiers of Grid Computing and Simulation at Nano-Bio Interface. (Feb. 27- Mar. 1) Baton Rouge, LA. 12th Users Meeting for the Advanced...

82

APS Operational Statistics  

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

physics, geology, and environmental science. The APS was built by the U.S. Department of Energy as a national user facility. This page provides access to operational statistics...

83

APS 2001 Conferences  

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

the APS researcher community. American Physical Society March Meeting. (03.12-03.16) Seattle, WA BioCARS Time Resolved Workshop. (03.12-03.13) Argonne National Laboratory...

84

APS News 2003  

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

(Jul. 23) A new high-resolution powder diffractometer beamline will be funded by the U.S, Department of Energy's Office of Basic Energy Sciences for construction at APS sector...

85

APS Engineering Support Division  

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and seminars (links to APS site.) Service Request Forms Request service from one of many AES groups. Work Request Forms Create and query requests in the Work Request system....

86

High-Brightness Beams from a Light Source Injector The Advanced Photon Source Low-Energy Undulator Test Line Linac  

E-Print Network (OSTI)

The use of existing linacs, and in particular light source injectors, for free-electron laser (FEL) experiments is becoming more common due to the desire to test FELs at ever shorter wavelengths. The high-brightness, high-current beams required by high-gain FELs impose technical specifications that most existing linacs were not designed to meet. Moreover, the need for specialized diagnostics, especially shot-to-shot data acquisition, demands substantial modification and upgrade of conventional linacs. Improvements have been made to the Advanced Photon Source (APS) injector linac in order to produce and characterize high-brightness beams. Specifically, effort has been directed at generating beams suitable for use in the low-energy undulator test line (LEUTL) FEL in support of fourth-generation light source research. The enhancements to the linac technical and diagnostic capabilities that allowed for self-amplified spontaneous emission (SASE) operation of the FEL at 530 nm are described. Recent results, includi...

Travish, G; Borland, M; Hahne, M; Harkay, K C; Lewellen, J W; Lumpkin, Alex H; Milton, S V; Sereno, N S

2000-01-01T23:59:59.000Z

87

Certified APS Electrical Equipment Inspectors  

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

Burke AES 2-6025 burke@aps.anl.gov Alex Cours ASD 2-4550 4-1016 cours@aps.anl.gov Ray Davis AES 2-5072 4-1019 rdavis@aps.anl.gov John Dench AES 2-8921 4-5291 dench@aps.anl.gov...

88

Source of coherent short wavelength radiation  

DOE Patents (OSTI)

An apparatus for producing coherent radiation ranging from X-rays to the far ultraviolet (i.e., 1 Kev to 10 eV) utilizing the Compton scattering effect. A photon beam from a laser is scattered on a high energy electron bunch from a pulse power linac. The short wavelength radiation produced by such scattering has sufficient intensity and spatial coherence for use in high resolution applications such as microscopy.

Villa, Francesco (Alameda, CA)

1990-01-01T23:59:59.000Z

89

About Your APS Badge  

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

About Your APS Badge About Your APS Badge Facts, responsibilities, and privileges associated with an APS badge. Facts Your badge number is the largest 5 or 6-digit number on the back of the badge (do not use the letters or leading zero). Non-U.S. citizens: Your badge is valid for 2 years from the date of approval for access. According to U.S. Department of Energy requirements, your badge must be red and must display your country of citizenship and the expiration date. Students who are U.S. citizens: Your badge is valid for 2 years from issuance and displays the expiration date. A badge will be issued only if a user agreement is in place (and for non-U.S. citizens, if an indices check has been completed). Responsibilities You must wear your badge in view at all times while on the Argonne

90

2010 APS.xls  

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

Allison to Marcinowski SUBJECT: NEPA 2010 APS for DOE-SRS Allison to Marcinowski SUBJECT: NEPA 2010 APS for DOE-SRS *Title, Location Estimated Cost Description Determination Date: uncertain Transmittal to State: uncertain EA Approval: uncertain tbd FONSI: uncertain Total Estimated Cost tbd Annual NEPA Planning Summary Environmental Assessments (EAs) Expected to be Initiated in the Next 12 Months Department of Energy (DOE) Savannah River Site (SRS) Jan-10 Estimated Schedule (**NEPA Milestones) DOE SRS expects to initiate one or more new EAs over the next 12 months. * Please include projected NEPA milestones, if planned. 1 of 6 Annual NEPA Planning Summary (2010) DOE Savannah River Site Attachment: Memo, Allison to Marcinowski SUBJECT: NEPA 2010 APS for DOE-SRS *Title, Location Estimated Cost Description Determination Date:

91

BEAM STUDIES AT THE SNS LINAC  

Science Conference Proceedings (OSTI)

The most recent beam dynamics studies at the Spallation Neutron Source (SNS) linac, including major beam loss reduction efforts in the normal conducting linac and in the superconducting linac (SCL), and the simulation and measurement of longitudinal beam halo and longitudinal acceptance at the entrance of the SCL are discussed. Oscillation of the beam centroid around the linac synchronous phase and the phase adiabatic damping curves in the SNS linac are investigated with linac longitudinal models and measured with all the linac beam phase monitors.

Zhang, Yan [ORNL

2009-01-01T23:59:59.000Z

92

Comment on "Analysis of quantum coherent semiconductor quantum dot p-i-n junction photovoltaic cells"  

E-Print Network (OSTI)

This is a comment on PRL paper by A.P. Kirk "Analysis of quantum coherent semiconductor quantum dot p-i-n junction photovoltaic cells"

Scully, Marlan O

2010-01-01T23:59:59.000Z

93

BNL | S-band Linac  

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

S-band Linac S-band Linac Some experiments at the ATF require higher energies than what is available from the photoinjector. We use two traveling wave linac structures, known as 'SLAC sections' (from the famous 2-mile SLAC linac). Each section provides an acceleration given by: Energy gain (in MeV) = 10.8*SQRT(Power in MW)-39.5*Current(in amps) The current to be used is an equivalent steady state current. The microwave drive power, at a frequency of 2856 MHz, is provided by a single XK5 klystron tube (the old SLAC klystron). This tube can provide up to 25 MW. The ATF modulator can provide the XK5 klystron with high voltage for about 3 microseconds. This 3 microsecond pulse is called the macropulse. The repetition rate for the macropulses is from 1 to 6 per second. Within each

94

APS Today: Calendar of Events  

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

aps.anl.gov/News/APS_Today Upcoming events at the Advanced aps.anl.gov/News/APS_Today Upcoming events at the Advanced Photon Source at Argonne National Laboratory. en-us Argonne National Laboratory http://www.aps.anl.gov/Images/argonne_header_logo_white.jpg http://www.aps.anl.gov/News/APS_Today 227 100 Engineering the Elasticity of Soft Colloidal Materials Through Surface Modification and Shape Anisotropy posted 2014-01-08 @ 3:57pm 2014-01-13 11:00:00 401-A1100 XSD Presentation Wave Propagation Through Random Media: Branched Flow from Acoustics to Ocean Waves http://www.aps.anl.gov/News/Meetings/APS_Colloquium/ posted 2014-01-09 @ 12:40pm 2014-01-15 15:00:00 402-AUD APS Colloquium User Science Seminar http://www.aps.anl.gov/News/Meetings/User_Seminars/ posted 2013-12-05 @ 2:20pm 2014-01-31 12:00:00 401-A1100 APS Seminar User Science

95

Logos 2001 APS Articles  

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

1 1 A quarterly magazine about Argonne research. The Argonne Logos articles in this section focus on APS-related research. Volume 19, no. 2 - Fall 2001 Argonne's SBC provides a close look at life's construction workers Diagram of X-ray crystallography at teh APS Evidence of human construction work is all around us: on the roads we travel, in the buildings we occupy and now even in outer space... But one form of "human construction" quietly does its job without making the daily news or creating the slightest bit of noise or inconvenience, unless its machinery goes highly awry. This is the construction that has gone on inside every human cell - and probably every cell that has ever existed - since life began on Earth 3.5 billion years ago. Right now these cellular construction workers, called

96

APS Science 2007.  

Science Conference Proceedings (OSTI)

This report provides research highlights from the Advanced Photon Source (APS). Although these highlights represent less than 10% of the published work from the APS in 2007, they give a flavor of the diversity and impact of user research at the facility. In the strategic planning the aim is to foster the growth of existing user communities and foresee new areas of research. This coming year finds the APS engaged in putting together, along with the users, a blueprint for the next five years, and making the case for a set of prioritized investments in beamlines, the accelerator, and infrastructure, each of which will be transformational in terms of scientific impact. As this is written plans are being formulated for an important user workshop on October 20-21, 2008, to prioritize strategic plans. The fruit from past investments can be seen in this report. Examples include the creation of a dedicated beamline for x-ray photon correlation spectroscopy at Sector 8, the evolution of dedicated high-energy x-ray scattering beamlines at sectors 1 and 11, a dedicated imaging beamline at Sector 32, and new beamlines for inelastic scattering and powder diffraction. A single-pulse facility has been built in collaboration with Sector 14 (BioCARS) and Phil Anfinrud at the National Institutes of Health, which will offer exceptionally high flux for single-pulse diffraction. The nanoprobe at Sector 26, built and operated jointly by the Argonne Center for Nanoscale Materials and the X-ray Operations and Research (XOR) section of the APS X-ray Science Division, has come on line to define the state of the art in nanoscience.

Not Available

2008-05-30T23:59:59.000Z

97

Induction Linac Pulsers  

DOE Green Energy (OSTI)

The pulsers used in most of the induction linacs evolved from the very large body of work that was done in the U.S. and Great Britain during the development of the pulsed magnetron for radar. The radar modulators started at {approx}100 kW and reached >10 MW by 1945. A typical pulse length was 1 {mu}s at a repetition rate of 1,000 pps. A very comprehensive account of the modulator development is Pulse Generators by Lebacqz and Glasoe, one of the Radiation Laboratory Series. There are many permutations of possible modulators, two of the choices being tube type and line type. In earlier notes I wrote that technically the vacuum tube pulser met all of our induction linac needs, in the sense that a number of tubes, in series and parallel if required, could produce our pulses, regulate their voltage, be useable in feed-forward correctors, and provide a low source impedance. At a lower speed, an FET array is similar, and we have obtained and tested a large array capable of >10 MW switching. A modulator with an electronically controlled output only needs a capacitor for energy storage and in a switched mode can transfer the energy from the capacitor to the load at high efficiency. Driving a full size Astron induction core and a simulated resistive 'beam load' we achieved >50% efficiency. These electronically controlled output pulses can produce the pulses we desire but are not used because of their high cost. The second choice, the line type pulser, visually comprises a closing switch and a distributed or a lumped element transmission line. The typical switch cannot open or stop conducting after the desired pulse has been produced, and consequently all of the initially stored energy is dissipated. This approximately halves the efficiency, and the original cost estimating program LIACEP used this factor of two, even though our circuits are usually worse, and even though our inveterate optimists often omit it. The 'missing' energy is that which is reflected back into the line from mismatches, the energy left in the accelerator module's capacitance, the energy lost in the switch during switching and during the pulse, and the energy lost in the pulse line charging circuit. For example, a simple resistor-limited power supply dissipates as much energy as it delivers to the pulse forming line, giving a factor if two by itself, therefore efficiency requires a more complicated charging system.

Faltens, Andris

2011-01-07T23:59:59.000Z

98

APS Experiment Safety Review Board  

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

Charter for the APS Experiment Safety Review Board May 12, 2011 1. Purpose The APS Experiment Safety Review Board (ESRB) advises the AES Division Director on the safe implementation of experiments performed by APS users on the experiment hall floor. The ESRB reviews each experiment that is submitted to the APS via the APS Experiment Safety Assessment System (ESAF). These experiments are conducted in beamline endstations in the APS Experiment Hall. 2. Membership The ESRB members are appointed by the AES Division Director. The current members of the ESRB are: Bruce Glagola AES - Chair Edmund Chang AES Paul Rossi XSD Nena Moonier AES Tom Barkalow PSC Patricia Pedergnana AES Wendy VanWingeren AES 3. Method After an experiment is submitted to the APS Experiment Safety Review system

99

APS Protocol for  

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

Protocol for Protocol for RECEIPT OF HAZARDOUS MATERIAL SHIPMENTS (Updated January 22, 2007) Scope & Application Throughout this document, the term hazardous material means any material regulated by the U.S. Department of Transportation as a hazardous material. This procedure governs APS Beamline acceptance of all packages known or suspected to contain hazardous materials. It applies not only to shipments delivered to Argonne National Laboratory by common carriers, but also to materials brought to the laboratory by researchers in personal, rental, or institutionally owned vehicles. There is no threshold quantity below which the procedure need not be followed. Purpose This procedure is intended to minimize the negative consequences that could result from

100

Wave Dragon ApS | Open Energy Information  

Open Energy Info (EERE)

Dragon ApS Dragon ApS Jump to: navigation, search Name Wave Dragon ApS Place Copenhagen, Denmark Zip DK-2200 Country Albania Product Wave energy converter development company. Has patented the Wave Dragon, an offshore floating slack moored wave energy converter. Coordinates 55.6760968°, 12.5683371° 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":55.6760968,"lon":12.5683371,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

Note: This page contains sample records for the topic "aps linac coherent" 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.


101

Electron Linacs for High Energy Physics  

Science Conference Proceedings (OSTI)

The purpose of this article is to introduce some of the basic physical principles underlying the operation of electron linear accelerators (electron linacs). Electron linacs have applications ranging from linacs with an energy of a few MeV, such that the electrons are approximately relativistic, to future electron-positron linear colliders having a collision energy in the several-TeV energy range. For the most part, only the main accelerating linac is treated in this article.

Wilson, Perry B.; /SLAC

2011-11-08T23:59:59.000Z

102

Intrabeam stripping in H- Linacs  

Science Conference Proceedings (OSTI)

A beam loss in the superconducting part of the SNS linac has been observed during its commissioning and operation. Although the loss does not prevent the SNS high power operation, it results in an almost uniform irradiation of linac components and increased radiation levels in the tunnel. Multi-particle tracking could neither account for the magnitude of the observed loss nor its dependence on machine parameters. It was recently found that the loss is consistent with the intrabeam particle collisions resulting in stripping of H{sup -} ions. The paper describes experimental observations and corresponding analytical estimates of the intrabeam stripping.

Lebedev, V.; Solyak, N.; Ostigy, J.-F.; /Fermilab; Alexandrov, A.; Shishlo, A.; /Oak Ridge

2010-09-01T23:59:59.000Z

103

APS User News, Issue 65  

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

5, November 1, 2010 5, November 1, 2010 CONTENTS DIRECTOR'S CORNER SCIENCE NEWS 1. Science Highlights USER MATTERS 2. New Badges for APS Users 3. APSUO Goes to Washington! 4. New Biosafety Web Page Available 5. Two New ANL Procedures: Injuries and Illnesses and Incident Notification FACILITY NEWS 6.Call for Workshop Proposals for APS/CNM/EMC Users Meeting 7. Cross-cut Review of APS X-ray Interface and Liquid Surface Scattering Science Held on October 6 8. APS SAC Meets, Sets Review Process for Scientific Priorities in APS-U 9. APS Upgrade on You Tube BRIEFLY NOTED -- Second Annual Meeting of the Prairie Section of the American Physical Society, November 18-20, 2010 -- PhD Scholarship on Virus Surrogate in New Zealand ===================================================== Instructions for subscribing, unsubscribing, and submitting info

104

APS User News, Issue 82  

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

2, November 6, 2012 2, November 6, 2012 CONTENTS DIRECTOR'S CORNER USER MATTERS -- APS User Wins Nobel Prize in Chemistry -- Physics, Picasso, and House Paint: X-rays Solve a Mystery -- CALL FOR: APS Workshop Proposals and Invited Speaker Suggestions--Due January 11, 2013! --"There's an app for APS!" BRIEFLY NOTED -- Welcome Susan White-DePace, Associate Manager for User Programs -- Nature.com Launches Scientific Reports -- Sidewalk Construction Begins from APS to Building 314 -- Newly Reduced Speed Limit in 201 Area -- Upcoming Meetings of Interest -- General User Proposal Deadline for Run 2013-2: March 8, 2013 -- Current APS Job Openings -- Save the Date: 2013 APS/CNM/EMC Users Meeting Set for May 6-9, 2013 ==================================================== Instructions for subscribing, unsubscribing, and submitting info

105

Groups | APS Engineering Support Division  

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

Search Button About Welcome Overview Visiting the APS Mission & Goals Find People Organization Charts Committees Job Openings User Information Prospective Users New Users...

106

APS User News, Issue 59  

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

of protein crystallography and a special executive session with directors of biology CATs on strategic planning for the future of biological research at APS and how the upgrade...

107

APS sector layout: Utilities, etc  

SciTech Connect

This bulletin describes the general physical layout of the APS Experiment Hall and the utilities that will be available for the beamlines.

Davey, S.

1993-02-01T23:59:59.000Z

108

APS sector layout: Utilities, etc.  

SciTech Connect

This bulletin describes the general physical layout of the APS Experiment Hall and the utilities that will be available for the beamlines.

Davey, S.

1993-02-01T23:59:59.000Z

109

DCS and APS Sign MOU  

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

1, 2012 Bookmark and Share Left to right: Yogendra Gupta, Director, Institute of Shock Physics, WSU; Brian Stephenson, APS Director; Eric Isaacs, Argonne Laboratory...

110

APS Guideline for Accident Investigations  

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

occurring in CATXSDs facilities at the APS. Definitions Accident: an unexpected event that produces personal injury, illness, or death; damage to or loss of property or...

111

APS-Aluminium Preheating System  

Science Conference Proceedings (OSTI)

Apr 1, 2003 ... This presentation overviews the propane-based APS aluminium preheating system for aluminum reduction cells. Among other features, the...

112

APS Technical Update - No. 30  

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

1995 (updated May 18, 2011) APS TECHNICAL UPDATE - 30 Policy for Radiological Surveys on Tools, Materials & Equipment to be Released from Controlled Areas to Uncontrolled Areas at...

113

Zimbra for APS Users  

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

Calendar Calendar Zimbra Calendar  ZWC Benefits: - Usable lab-wide, can schedule meetings with users and rooms outside APS - User friendly  Each Zimbra user has a personal calendar - Users migrated from Sun Calendar System optionally elected to migrate data from their personal calendar  With Zimbra, calendar terminology: - Appointments - Events - Meetings  Users can: - Create appointments - Create recurring events - Schedule all day events - Accept/Tentative/Reject an invitation with one click - Create additional calendars - Share their calendars with other users on and off-site - Delegate calendar management - Accept calendar shares - View calendar in various ways and print - Use color for quick calendar recognition - Schedule meetings * View multiple calendars to see potential scheduling

114

APS News 2005  

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

5 5 Physicists describe strange new fluid-like state of matter University of Chicago physicists have created a novel state of matter using nothing more than a container of loosely packed sand and a falling marble. They have found that the impacting marble produces a jet of sand grains that briefly behaves like a special type of dense fluid.Needing very fast, non-invasive tracking of the interior of the sand, the group used used high-speed x-ray radiography taken at 5,000 frames per second, the fastest ever at the Advanced Photon Source. (html) Grants fund collaborations by Argonne and U. of C. scientists using the APS Photo: UofC_logo The University of Chicago's Board of Governors for Argonne National Laboratory has selected seven proposals for 2005 Collaborative Research Seed Grants. Several of these proposals will utilize

115

APS Colloquium 2001  

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

1 1 The monthly APS Colloquium series is intended for the benefit of the Advanced Photon Source community as well as the Argonne community by bringing distinguished scientists in all disciplines to lecture on topics of general interest. Objectives include the cross-fertilization of research initiatives at various institutions and the identification of possible uses of the Advanced Photon Source. The lecturer is also invited to spend an additional day visiting with scientists at Argonne. LIGO and the Search for Gravitational Waves (Dec. 5) Barry Barish, California Institute of Technology (pdf) Chirped Hard X-ray Pulses and the Frontiers of Ultrafast, Time-Resolved, Macromolecular Crystallography (Nov. 7) Keith Moffat, The University of Chicago (pdf) Proteins Connect Biology, Chemistry, and Physics (Oct. 3)

116

Linac Coherent Light Source Overview | Department of Energy  

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

Energy 101: Solar PV Sec. Chu Online Town Hall Energy 101: Cool Roofs Energy 101: Geothermal Heat Pumps Why Cool Roofs? Chu at COP-16: Building a Sustainable Energy Future...

117

Linac Coherent Light Source Overview | Department of Energy  

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

Pledge? Conversation on the Future of the Wind Industry Science Lecture: Talking the Higgs Boson with Dr. Joseph Incandela Bill Gates and Deputy Secretary Poneman Discuss the...

118

Linac Coherent Light Source Overview | Department of Energy  

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

Kill-a-Watt Competition at University of Central Florida Faces of the Recovery Act: Sun Catalytix Investing in Clean, Safe Nuclear Energy Secretary Chu Speaks at the 2010...

119

Linac Coherent Light Source Overview | Department of Energy  

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

BP Oil Spill Footage (High Def) - Leak at 4850' - June 3 2010 (2 of 4) BP Oil Spill Footage (High Def) - Leak at 4840' - June 3 2010 (1 of 4) Re-Building Greensburg The...

120

Linac Coherent Light Source Overview | Department of Energy  

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

Weatherizing Wilkes-Barre White House Science Fair Recap Energy 101: Home Energy Assessment Recovery Act update from Sr. Advisor Matt Rogers -- End of Obligations The Recovery Act...

Note: This page contains sample records for the topic "aps linac coherent" 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

Linac Coherent Light Source Overview | Department of Energy  

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

Cathy Zoi on Weatherization BP Oil Spill Footage (High Def) - Top Hat Procedure at 4850' - June 3 2010 (4 of 4) BP Oil Spill Footage (High Def) - Leak at 4850' - June 3 2010 (3 of...

122

Linac Coherent Light Source Overview | Department of Energy  

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

Energy 101: Energy Efficient Data Centers Energy 101: Daylighting Solar Smarter Faster Seven Traffic Signals in Two Minutes It Starts with Science... Demoing the Modified TALON...

123

Linac Coherent Light Source Overview | Department of Energy  

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

The Future of Biofuels The Climate Challenge... and What's at Stake Sec. Chu Announces the First Auto Loans for Advanced Technologies...

124

Linac Coherent Light Source Overview | Department of Energy  

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

Security & Safety -Emergency Response & Procedures or Search Energy.gov Search Clear Filters All Videos ARPA-E 2011 Keynote: Dr. Arun Majumdar ARPA-E 2011 Keynote: Ray Mabus,...

125

APS X-rays Reveal Picasso's Secret  

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

APS Lights the Way to 2012 Chemistry Nobel The APS and the 2012 Argonne Energy Showcase DCS and APS Sign MOU Argonne Acoustic Levitation Video Goes Viral "Inside the Advanced...

126

APS User News, Issue 73  

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

3, September 15, 2011 3, September 15, 2011 CONTENTS DIRECTOR'S CORNER USER MATTERS -- Tweet Time! APS Beamlines Now Tweet Operational Status Info -- Changes to User Electrical Safety Training Requirements -- Groundbreaking for the New Advanced Protein Crystallization Facility -- Meg Vigliocco-Hagen, APS General User Program Administrator, Retires! -- Meet Beverly Knott, New APS Beam Time Access Administrator -- Safety Snippets: Practice Good Housekeeping BRIEFLY NOTED -- 4th Annual Postdoctoral Research Symposium: Registration Deadline September 21 -- 2011 Advanced Light Source Users' Meeting, October 3-5, 2011 -- 2011 SSRL/LCLS Annual Users' Meeting & Workshops, October 22-26, 2011 -- General Users Proposals Now Being Accepted -- Changes to User Training Course Requirements

127

APS Long Range Operations Schedule  

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

Shutdown Planning Shutdown Planning Planning Templates Shutdown Planning Schedules: Current Shutdown Schedule Archives: 2006 - 2013 APS Long-Range Operations Schedule: 2014 Archives: 2013 | 2012 2011 | 2010 | 2009 | 2008 2007 | 2006 | 2005 | 2004 2003 | 2002 | 2001 | 2000 1999 | 1998 | 1997 | 1996 APS Long-Range Operations Schedule (Fiscal Year 2014) Alternate Formats: iCal | Excel | PDF APS Long-Range Operation Schedule 2013-3 2014-1 2014-2 Sep Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep 1 1 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 2 2 2

128

ANL/APS/TB-32 Test of Horizontal Field Measurements Using Two-Axis Hall  

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

2 2 Test of Horizontal Field Measurements Using Two-Axis Hall Probes at the APS Magnetic Measurement Facility I. Vasserman Advanced Photon Source Argonne National Laboratory Argonne, IL 60439 1. Introduction The free-electron laser (FEL) project at the Advanced Photon Source (APS) will use a 400-MeV particle beam from the APS linac with RMS beam transverse size of 100 µm and requires very high performance of the insertion devices in order to achieve high intensity radiation. Averaged over period, the trajectory must deviate from the ideal on-axis trajectory by not more than 10% of the RMS beam size. Meaning that the second field integral should be straight within ±1300 G-cm 2 over the length of the device for both horizontal and vertical directions for the 400-MeV particle

129

BioPartners ApS | Open Energy Information  

Open Energy Info (EERE)

BioPartners ApS BioPartners ApS Jump to: navigation, search Name BioPartners ApS Place Tjele, Denmark Zip 8830 Sector Biomass Product Start-up company offering factual, professional and impartial advice in connection with processes that include biogas production and separation of clean fertilizers directly from degassed digester biomass. Coordinates 56.481861°, 9.62648° 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":56.481861,"lon":9.62648,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

130

BEAM DYNAMICS ISSUES IN THE SNS LINAC  

Science Conference Proceedings (OSTI)

A review of the Spallation Neutron Source (SNS) linac beam dynamics is presented. It describes transverse and longitudinal beam optics, losses, activation, and comparison between the initial design and the existing accelerator. The SNS linac consists of normal conducting and superconducting parts. The peculiarities in operations with the superconducting part of the SNS linac (SCL), estimations of total losses in SCL, the possible mechanisms of these losses, and the progress in the transverse matching are discussed.

Shishlo, Andrei P [ORNL

2011-01-01T23:59:59.000Z

131

APS Upgrade: Documents | Advanced Photon Source  

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MBAL Preliminary Expected Performance Characteristics of an APS Multi-Bend Achromat Lattice (download the PDF) APS-U PDR Preliminary Design Report (PDR) (Read-only) Preliminary...

132

APS Map | Overview | Advanced Photon Source  

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APS Systems Map There are 5 main components that make up the APS technical facility: the linear accelerator, the booster synchrotron, the electron storage ring, insertion devices,...

133

APS News | Advanced Photon Source  

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APS News Archives: APS News Archives: 2012 | 2011 | 2010 | 2009 2008 | 2007 | 2006 | 2005 2004 | 2003 | 2002 | 2001 2000 Subscribe to APS News rss feed APS News Kim of ASD Awarded 2014 Wilson Prize for Achievement in Physics of Particle Accelerators Kim of ASD Awarded 2014 Wilson Prize for Achievement in Physics of Particle Accelerators January 7, 2014 Kwang-Je Kim of the Advanced Photon Source has been named the recipient of the 2014 Robert R. Wilson Prize for Achievement in the Physics of Particle Accelerators, Harkay of ASD Elected to Fellowship in the American Physical Society Harkay of ASD Elected to Fellowship in the American Physical Society December 18, 2013 Katherine Harkay of the Accelerator Systems Division has been elected to Fellowship in the American Physical Society for

134

APS Upgrade | Advanced Photon Source  

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APS APS View Larger The brightness and energy of x-ray beams are critical properties for research. Higher brightness means more x-rays can be focused onto a smaller, laser-like spot, allowing researchers to gather more data in greater detail in less time. Higher energies allow x-rays to penetrate deeper inside materials to reveal crucial information about a material's structure and function. The combination of high brightness and high energy allows the observation and imaging - in real time - of fast and ultrafast technologically important processes, including fuel sprays, magnetic switching, and biological processes in living organisms. The APS Upgrade project will increase the brightness of the APS high-energy (hard) x-ray beams. This will equip researchers for the groundbreaking

135

Mikkelsen_APS-07.ppt  

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R. Mikkelsen, APS/DPP Mtg., Orlando, 12-16 Nov. 2007 p. 1 R. Mikkelsen, APS/DPP Mtg., Orlando, 12-16 Nov. 2007 p. 1 GYRO Simulations of a Peaked Density H-mode plasma in C-Mod D. R. Mikkelsen, M. Bitter, K. Hill, PPPL M. Greenwald, A. Ince-Cushman, J. Rice, MIT J. Candy, R. Waltz, General Atomics APS/DPP Meeting Orlando, 12-16 November 2007 D. R. Mikkelsen, APS/DPP Mtg., Orlando, 12-16 Nov. 2007 p. 2 What causes H-mode density peaking? a brief history: Angioni, et al., Phys. Plasmas 10 (2003) 3225 GLF23 simulations apparently explain observations. Higher collisionality preferentially reduces anomalous pinch. Angioni, et al., Phys. Plasmas 12 (2005) 112310 GS2 quasilinear estimates of particle flux (supercedes GLF23 work). raising collisionality turns off the pinch, but transition is too early. Estrada-Mila, et al., Phys. Plasmas 13 (2006) 074505

136

APS Upgrade | Advanced Photon Source  

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Workshop on new science opportunities provided by a multi-bend achromat lattice at the APS October 21-22 Advanced Photon Source Argonne National Lab To prepare for the workshop...

137

APS User News, Issue 80  

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Current APS Job Openings -- LSXS 2012, the School on Liquid Surface X-ray Scattering: Theory and Experimental Methods--Deadline August 3 -- HPCAT Workshop on Advances in Matter...

138

APS User Safety Support Staff  

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APS Core Training Monica Green Other Courses Susan Benda Rachel Reed Jane Pransky Sandy Tummillo Contact Info Susan Benda Building 401, Room B4193D Phone: 630-252-7631 Fax:...

139

Electron Linac Offers Safe, Affordable Production Method for ...  

Biomass and Biofuels; Building Energy Efficiency; ... The electron beam in Linac 2 is also transmitted through the same target then collected in Linac 1 to accelerate ...

140

The APS direct-drive pulsed septum magnets  

Science Conference Proceedings (OSTI)

The Advanced Photon Source (APS) consists of four separate machines: linac, booster, positron accumulator ring (PAR) and storage ring (SR), plus three transfer lines interconnecting the machines. At least one thin, pulsed septum magnet is located at each splice joint. The stray field tolerances for two of these septum magnets are very stringent. As an example, for clean operation during the proposed top-up mode in the storage ring, the stray fields from the septum magnet must not exceed 1 G-m. The septum wall thickness must also not exceed 2.4 mm. To meet these requirements, direct-drive septum magnets with magnetic shield pipe around the stored beam region were developed and built. These magnets have now been tested and installed, and are used in daily operation. We describe the magnet(s) design, the measurement results, the actual operation, and performance.

Sheynin, S.; Lopez, F.; Milton, S.V.

1995-07-01T23:59:59.000Z

Note: This page contains sample records for the topic "aps linac coherent" 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.


141

Advanced Photon Source (APS) Colloquium Series Video Collection from 2011  

DOE Data Explorer (OSTI)

The Advanced Photon Source (APS) at Argonne National Laboratory allows scientists to pursue new knowledge in many different scientific disciplines. The monthly APS Colloquium series brings these distinguished scientists to Illinois from all around the world to lecture on topics of general interest. Some of these presentations are available as integrated video and slides. The 2011 talks are posted on the APS website after their presentation dates. Titles include: 1) Atomic Resolution Coherent Diffractive Imaging and Ultrafast Science, Jian-min Zuo (University of Illinois); 2) Opportunties for X-ray Science in Future Computing Architectures, Ian Foster (ANL); 3) Fifth-Generation Free-Electron Laser Light Sources, Claudio Pellegrini (UCLA); 4) Observing Structure and Motion in Molecules with Ultrafast Strong Field and Short Wavelength Laser Radiation, Philip H. Bucksbaum (National Academy of Sciences); 5) The Cambrian Evolutionary Explosion: Novel Evidence from Fossils Studied by X-ray Tomography, Jun-Yuan Chen (Nanjing University, China); 6) Emerging Properties of Quantum Matter: Case Studies of Topological and Superconducting Phases, Zhi-Xun Shen (Stanford University); 7) X-ray Imaging Based on Compton Scattering, Joseph Callerame (American Scient and Engineering, Inc.); 8) Using Synchrotron Radiation and Electron Microscopy to Map the Huge Structural Changes that Occur in Viruses During Their Life Cycle, Michael Rossman (Purdue University); 9) Coherent Control of Quantum Matter, Andrea Cavalleri (Max Planck Institute); 10) Gravitational-Wave Detectors: First, Second, and Third Generation, Vuk Mandic (University of Minnesota).

142

Beam Dynamics Study of X-Band Linac Driven X-Ray FELS  

Science Conference Proceedings (OSTI)

Several linac driven X-ray Free Electron Lasers (XFELs) are being developed to provide high brightness photon beams with very short, tunable wavelengths. In this paper, three XFEL configurations are proposed that achieve LCLS-like performance using X-band linac drivers. These linacs are more versatile, efficient and compact than ones using S-band or C-band rf technology. For each of the designs, the overall accelerator layout and the shaping of the bunch longitudinal phase space are described briefly. During the last 40 years, the photon wavelengths from linac driven FELs have been pushed shorter by increasing the electron beam energy and adopting shorter period undulators. Recently, the wavelengths have reached the X-ray range, with FLASH (Free-Electron Laser in Hamburg) and LCLS (Linac Coherent Light Source) successfully providing users with soft and hard X-rays, respectively. FLASH uses a 1.2 GeV L-band (1.3 GHz) superconducting linac driver and can deliver 10-70 fs FWHM long photon pulses in a wavelength range of 44 nm to 4.1 nm. LCLS uses the last third of the SLAC 3 km S-band (2.856 GHz) normal-conducting linac to produce 3.5 GeV to 15 GeV bunches to generate soft and hard X-rays with good spatial coherence at wavelengths from 2.2 nm to 0.12 nm. Newer XFELs (at Spring8 and PSI) use C-band (5.7 GHz) normal-conducting linac drivers, which can sustain higher acceleration gradients, and hence shorten the linac length, and are more efficient at converting rf energy to bunch energy. The X-band (11.4 GHz) rf technology developed for NLC/GLC offers even higher gradients and efficiencies, and the shorter rf wavelength allows more versatility in longitudinal bunch phase space compression and manipulation. In the following sections, three different configurations of X-band linac driven XFELs are described that operate from 6 to 14 GeV. The first (LOW CHARGE DESIGN) has an electron bunch charge of only 10 pC; the second (OPTICS LINEARIZATION DESIGN) is based on optics linearization of the longitudinal phase space in the first stage bunch compressor and can operate with either a high (250 pC) or low (20 pC) bunch charge; and the third (LCLS INJECTOR DESIGN) is similar to LCLS but uses an X-band linac after the first stage bunch compressor at 250 MeV to achieve a final beam energy up to 14 GeV. Compared with LCLS, these X-band linacs are at least a factor of three shorter.

Adolphsen, C.; Limborg-Deprey, C.; Raubenheimer, T.O.; Wu, J.; /SLAC; Sun, Y.; /SLAC

2011-12-13T23:59:59.000Z

143

Retroactive Coherence  

E-Print Network (OSTI)

In gravitational microlensing, interference visibility is established when the spectral resolution of the observation is less than the reciprocal of the time delay difference. Using high resolutionspectroscopy fringes will be visible at large path differences, even when the source emission is incoherent. This is possible because coherence can be established after interference has already occurred. Results of a laboratory test are presented which demonstrate this retroactive establishment of coherence.

J. B. Peterson

2002-03-15T23:59:59.000Z

144

APS Technical Update - No. 11  

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July 30, 1997 July 30, 1997 APS TECHNICAL UPDATE - No. 11 Subject: Experiment Hall Surveying References To facilitate the alignment of beamline components in the Experiment Hall, a number of APS surveying network fiducials have been provided by the APS. This note provides a description of these fiducials for future reference. The fiducials include: a beam center line drawn on the floor for each bending magnet (BM) and insertion device (ID) beamline, four survey monuments per sector, and an array of reference markers along each beamline. The beam centerline drawn on the Experiment Hall floor indicates the nominal position of the center of an undeflected BM or ID beam. This line can be used for the rough alignment of beamline components. For higher precision, four survey monuments have been installed in the

145

APS User News, Issue 71  

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1, August 18, 2011 1, August 18, 2011 CONTENTS 1. DIRECTOR'S CORNER USER MATTERS 2. How to Wow! "Secrets" for a Successful Proposal 3. Sweet Dreams Mean Safer Work 4. XSD's Linda Young Elected DAMOP Vice Chair 5. Successful 2011 APS/IIT Summer XAFS School BRIEFLY NOTED -- John Quintana Appointed Argonne's Deputy COO -- 2011 X-Ray Spectroscopy of Magnetic Solids Workshop Set for October 22-23 -- Workshops on Hard X-ray Instrumentation at the SwissFEL -- Next GUP Deadline is October 28, 2011 ===================================================== Instructions for subscribing, unsubscribing, and submitting info http://www.aps.anl.gov/Users/Communications/User_News/ ===================================================== DIRECTOR'S CORNER During the last week of July, we had the annual review of APS organized by

146

APS User News, Issue 62  

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2, June 21, 2010 2, June 21, 2010 CONTENTS MESSAGE FROM MURRAY SCIENCE NEWS 1. Jaramillo Recognized for Techniques to Study Quantum Effects at High Pressure 2. Science Highlights USER MATTERS 3. APS Upgrade Seminar Series Scheduled for Summer Months 4. APS Beam Time Request System Goes Full Time FACILITY NEWS 5. Proposal Deadline July 9, for 2010-3 Run Cycle 6. Twenty Years of Groundbreaking Science and Beyond! 7. Workshop Summaries from the 2010 APS/EMC Users Meeting Available Online 8. New APSUO Members Elected 9. NUFO Report BRIEFLY NOTED -- First North American Core Shell Spectroscopy Conference: August 2-6, 2010 -- The 10th International Conference on X-ray Microscopy: August 15-20, 2010 -- Short Course on High Pressure Synchrotron Techniques: September 15-18, 2010 -- 16th Pan-American Synchrotron Radiation Instrumentation Conference:

147

APS Upgrade | Advanced Photon Source  

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Workshop on new science opportunities provided by a multi-bend achromat lattice at the APS APS-U MBA Lattice Workshop Registration is now closed. Please contact Diane Wilkinson ext. 7810 or a member of the Workshop Organizing Committee for changes or modifications to your registration. Submit Comments, Suggestions, and Ideas for MBA Lattice Workshop October 21-22 Advanced Photon Source Argonne National Lab The Advanced Photon Source Upgrade is focused on delivering a powerful, versatile facility for science using high-brightness, high-energy X-rays. At APS, and around the light source community, scientists have been developing storage ring designs that push closer to the ultimate diffraction limit for X-ray sources. A recent report by the Basic Energy Sciences Advisory Committee, which advises the Director of the U.S.

148

A recirculating linac-based facility for ultrafast X-ray science  

SciTech Connect

We present an updated design for a proposed source of ultra-fast synchrotron radiation pulses based on a recirculating superconducting linac, in particular the incorporation of EUV and soft x-ray production. The project has been named LUX - Linac-based Ultrafast X-ray facility. The source produces intense x-ray pulses with duration of 10-100 fs at a 10 kHz repetition rate, with synchronization of 10 s fs, optimized for the study of ultra-fast dynamics. The photon range covers the EUV to hard x-ray spectrum by use of seeded harmonic generation in undulators, and a specialized technique for ultra-short-pulse photon production in the 1-10 keV range. High-brightness rf photocathodes produce electron bunches which are optimized either for coherent emission in free-electron lasers, or to provide a large x/y emittance ration and small vertical emittance which allows for manipulation to produce short-pulse hard x-rays. An injector linac accelerates the beam to 120 MeV, and is followed by four passes through a 600-720 MeV recirculating linac. We outline the major technical components of the proposed facility.

Corlett, J.N; Barletta, W.A.; DeSantis, S.; Doolittle, L.; Fawley, W.M.; Green, M.A.; Heimann, P.; Leone, S.; Lidia, S.; Li, D.; Ratti, A.; Robinson, K.; Schoenlein, R.; Staples, J.; Wan, W.; Wells, R.; Wolski, A.; Zholents, A.; Placidi, M.; Pirkl, W.; Parmigiani, F.

2003-05-06T23:59:59.000Z

149

APS beamline standard components handbook  

SciTech Connect

It is clear that most Advanced Photon Source (APS) Collaborative Access Team (CAT) members would like to concentrate on designing specialized equipment related to their scientific programs rather than on routine or standard beamline components. Thus, an effort is in progress at the APS to identify standard and modular components of APS beamlines. Identifying standard components is a nontrivial task because these components should support diverse beamline objectives. To assist with this effort, the APS has obtained advice and help from a Beamline Standardization and Modularization Committee consisting of experts in beamline design, construction, and operation. The staff of the Experimental Facilities Division identified various components thought to be standard items for beamlines, regardless of the specific scientific objective of a particular beamline. A generic beamline layout formed the basis for this identification. This layout is based on a double-crystal monochromator as the first optical element, with the possibility of other elements to follow. Pre-engineering designs were then made of the identified standard components. The Beamline Standardization and Modularization Committee has reviewed these designs and provided very useful input regarding the specifications of these components. We realize that there will be other configurations that may require special or modified components. This Handbook in its current version (1.1) contains descriptions, specifications, and pre-engineering design drawings of these standard components. In the future, the APS plans to add engineering drawings of identified standard beamline components. Use of standard components should result in major cost reductions for CATs in the areas of beamline design and construction.

Kuzay, T.M.

1992-01-01T23:59:59.000Z

150

New Post-Linac Collimation System  

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Post-Linac Post-Linac Collimation System for the Next Linear Collider NLC Post-Linac Collimation Task Force LCC-Note-0052 21-Feb-2001 Abstract We present a new design for the NLC post-linac collimation system. The new design sepa- rates the collimation of off-energy particles and particles with large betatron amplitudes. The energy collimation system achieves passive protection against damage by an errant bunch train via large horizontal dispersion and vertical betatron functions, and makes use of optical symme- tries to reduce jitter amplification. The betatron collimation system permits infrequent damage to the thin "spoiler" collimators, while the thick "absorber" collimators have a much larger aperture and are thus more difficult to hit. The physical phenomena which are relevant to the design and operation of the collimation system are reviewed, and

151

New Science with the APS Superconducting Undulator  

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| 2007 | 2006 | 2005 2004 | 2003 | 2002 | 2001 2000 Subscribe to APS News rss feed New Science with the APS Superconducting Undulator JULY 24, 2013 Bookmark and Share The Nature...

152

Spin Spectrometer at the ALS and APS  

E-Print Network (OSTI)

5 Spin Spectrometer at the ALS and APS-NIM/SRI07 Figure 3 Ancollected on Beamline 7 at the ALS is shown here. The photonSpin Spectrometer at the ALS and APS-NIM/SRI07 Spin

Tobin, James G; Lawrence Livermore National Laboratory; University of Missouri-Rolla; Boyd Technologies

2008-01-01T23:59:59.000Z

153

APS User News, Issue 76  

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6, February 21, 2012 6, February 21, 2012 CONTENTS DIRECTOR'S CORNER Special Announcement: George Srajer Appointed Project Director for the APS Upgrade and Deputy ALD USER MATTERS -- Registration Open for 2012 APS/CNM/EMC Users Meeting: Our User Science Shapes the Future! -- CALLING ALL VIDEO MAKERS! Submit Your Films for the "Usies Awards"! -- LCLS-II New Instruments Workshops March 19-22, 2012 -- NUFO Goes To Washington! -- Tax Presentation Available BRIEFLY NOTED -- Recognitions and Honors -- Users Meeting Satellite Workshop: "SAXS Software Packages Irena and Nika" -- New Web Page Offers Quick Help Links for Users -- New Mural Graces the Wall near Viewing Area -- General User Proposal Deadline for 2012-2 Run: March 9, 2012 =====================================================

154

ANL/APS/TB-17  

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7 7 1 Undulator A Characteristics and Specifications: Enhanced Capabilities Roger J. Dejus, Barry Lai, Elizabeth R. Moog, and Efim Gluskin Introduction The undulator A for the Advanced Photon Source (APS) is a planar insertion device that will generate high-intensity x-ray radiation in the spectral range 3.2 keV to 45 keV by using the first, third, and fifth harmonics of radiation. The device has been optimized for the APS so that the variation in brilliance is small when tuning from one harmonic energy to the next. This has been achieved by an increase of the magnetic field for a given gap and by allowing a smaller minimum gap when installed in the storage ring. This document describes the modification of the magnetic structure and the enhanced on- axis magnetic fields. The enhanced spectral performance is discussed and illustrated in tuning

155

aps_news_template.qxd  

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has yet to achieve has yet to achieve the alchemist's dream of turn- ing lead into gold. But a group of researchers using the GeoSoilEnviroCARS (GSE- CARS) and High-Pressure Collaborative Access Team (HP-CAT) facilities at the Depar tment of Energy's Advanced Photon Source (APS) at Argonne National Laboratory, may have found a way to tur n ordinar y soft graphite (source of the "lead" found in pencils) into a new, super-hard material that "looks" just like diamond. Using the high-brilliance x-ray beams from the APS, the group discovered that, under extreme pressure, graphite (among the softest of materials and the source of the lead found in pencils) becomes as hard as diamond, the hardest known material. What's more, the new super-hard material can be induced to return to its previous soft state.

156

APS Research Fuels Engineering Interest  

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5th, 2003 5th, 2003 APS Research Fuels Engineering Interest Award-winning research on the characteristics of fuel sprays from injectors is one of the featured articles in the May 2003 issue of Mechanical Engineering and on the Web site of that magazine. The studies, carried out at APS's X-ray Operation and Research beamline 1-BM and the Cornell High Energy Synchrotron Source, revealed startling new information about fuel sprays, including the presence of a shockwave as the spray leaves the injector nozzle. Entitled "Penetrating Vision," the article in Mechanical Engineering, by associate editor John DeGaspari, notes that "an investigative technique using x-rays is causing engine designers to sit up and take notice." In the article, Scott Parrish, General Motors R&D senior research engineer, notes

157

APS USER TRAINING HISTORY Background  

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USER TRAINING HISTORY USER TRAINING HISTORY Background The User Program Division Director has delegated to the CATs the authority to authorize the conduct of experiments because the CATs have accepted responsibility for: * identifying and evaluating the hazards posed by the experiment, * specifying controls appropriate to the hazards, and * verifying that controls are in place. One form of hazard control frequently made mandatory by law and laboratory policy is worker knowledge. The accepted means of verifying that a worker has the required knowledge is ensuring that the worker has completed appropriate training. With CAT input, the APS has developed the APS User Training History. This web-based tool enables designated CAT personnel to examine data characterizing ES&H training courses

158

Sherwood/APS 2006 Conference  

SciTech Connect

The International Sherwood Theory Meeting is a yearly meeting that focuses on the theory of magnetically confined fusion plasmas. There are many topics of common interest in fusion plasma systems and space and astrophysical plasmas. These common topics include such key topics as magnetic reconnection, the dynamo, turbulence and transport and particle heating and acceleration. One of the major participants of the April APS meeting is the APS Division of Astrophysics (DAP). The goal of having the Sherwood Meeting jointly with the April meeting was to promote discussion of topics of common interest in fusion and space and astrophysics. Scientists from the DAP, the Division of Plasma Physics (DPP), the Topical Group on Plasma Astrophysics (GPAP) and Sherwood worked together closely to produce a joint program that addressed areas of common interest. Four sessions of invited talks were sponsored jointly by the DAP, DPP and GPAP on laboratory experiments related to astrophysics. Plasma scientists working in theory and computation play a key role in connecting these laboratory experiments to the very disparate conditions found in fusion and astrophysical systems. Thus, the attendees of the Sherwood Theory meeting were critical to facilitating this effort at cross-disciplinary communication. Noteworthy were the selection of two of the prestigious plenary talks at the joint meeting on plasma topics - one related to the gyrokinetic modeling of turbulence and the other related to the structure of collisionless shocks. It is rare to see even a single plenary talk on plasma physics at the APS April Meeting. There were additional costs associated with hosting a joint meeting. The Office of Fusion Energy Sciences contributed $3000 in partial support of this meeting. This funding covered part of the costs of the poster boards and A. V. equipment that was used in the presentation of nearly 200 scientific papers related to magnetically confined fusion plasmas. The APS waived its indirect costs on this funding as part of their effort to support this joint meeting.

James F. Drake

2009-07-28T23:59:59.000Z

159

The APS control system network  

SciTech Connect

The APS accelerator control system is a distributed system consisting of operator interfaces, a network, and computer-controlled interfaces to hardware. This implementation of a control system has come to be called the {open_quotes}Standard Model.{close_quotes} The operator interface is a UNDC-based workstation with an X-windows graphical user interface. The workstation may be located at any point on the facility network and maintain full functionality. The function of the network is to provide a generalized communication path between the host computers, operator workstations, input/output crates, and other hardware that comprise the control system. The crate or input/output controller (IOC) provides direct control and input/output interfaces for each accelerator subsystem. The network is an integral part of all modem control systems and network performance will determine many characteristics of a control system. This paper will describe the overall APS network and examine the APS control system network in detail. Metrics are provided on the performance of the system under various conditions.

Sidorowicz, K.V.; McDowell, W.P.

1995-12-31T23:59:59.000Z

160

APS Visitor Registration Form | Advanced Photon Source  

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APS Visitor Registration Form APS Visitor Registration Form To request access as a visitor who will not do hands-on work, please complete this form. For assistance, contact the APS User Office by phone at (630) 252-9090 or by email at apsuser@aps.anl.gov. Please request access directly by contacting the APS User Office by phone at (630) 252-9090 or by email at apsuser@aps.anl.gov. If you are concerned about sending your passport and visa information, leave those fields blank and fax a letter to (630) 252-9250. To Request APS Visitor Registration, please enter the following: * indicates required field First Name*: Middle Initial/Name*: Last Name*: Title: Organization*: Department: Address 1*: Address 2: City*: State*: Zip Code*: Country: Phone*: Fax: E-mail Address*: Gender*: Female

Note: This page contains sample records for the topic "aps linac coherent" 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

Stephen Southworth Elected to APS Fellowship  

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American Physical Society Honors Decker American Physical Society Honors Decker APS Lights the Way to 2012 Chemistry Nobel APS X-rays Reveal Picasso's Secret DCS and APS Sign MOU The APS and the 2012 Argonne Energy Showcase APS News Archives: 2012 | 2011 | 2010 | 2009 2008 | 2007 | 2006 | 2005 2004 | 2003 | 2002 | 2001 2000 Subscribe to APS News rss feed Stephen Southworth Elected to APS Fellowship DECEMBER 19, 2012 Bookmark and Share Stephen Southworth Argonne Senior Scientist Stephen Southworth has been named a Fellow of the American Physical Society, an honor limited to no more than one-half of one percent of the society's membership of more than 50,000. He is recognized for "pioneering the development of atomic and molecular spectroscopies with third- and fourth-generation light sources including

162

APS Long Range Operations Schedule  

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3) 3) Alternate Formats: iCal | Excel | PDF APS Long-Range Operation Schedule 2012-3 2013-1 2013-2 Sep Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep 1 1 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 2 2 2 3 3 3 3 3 3 3 3 3 3 3 3 4 4 4 4 4 4 4 4 4 4 4 4 5 5 5 5 5 5 5 5 5 5 5 5

163

APS Long Range Operations Schedule  

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2) 2) Alternate Formats: iCal | Excel | PDF APS Long-Range Operation Schedule 2011-3 2012-1 2012-2 Sep Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep 1 1 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 2 2 2 3 3 3 3 3 3 3 3 3 3 3 3 4 4 4 4 4 4 4 4 4 4 4 4 5 5 5 5 5 5 5 5 5 5 5 5

164

APS Long Range Operations Schedule  

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1) 1) Alternate Formats: iCal | Excel | PDF APS Long-Range Operation Schedule 2010-3 2011-1 2011-2 Sep Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep 1 1 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 2 2 2 3 3 3 3 3 3 3 3 3 3 3 3 4 4 4 4 4 4 4 4 4 4 4 4 5 5 5 5 5 5 5 5 5 5 5 5

165

APS Long Range Schedule 2000  

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APS FY2000 Beamline Operations Schedule APS FY2000 Beamline Operations Schedule JAN Monday Tuesday Wednesday Thursday Friday Saturday Sunday Week 1 10 11 12 13 14 15 16 0000-0800 SM SM SM SM SM MS MS 0800 - 1600 SM SM SM SM MS MS MS 1600 - 2400 SM SM SM SM MS MS MS Week 2 17 18 19 20 21 22 23 0000 - 0800 MS MS MS UO UO UO UO 0800 - 1600 MS MS UO UO UO UO UO 1600 - 2400 MS MS UO UO UO UO UO Week 3 24 25 26 27 28 29 30 0000 - 0800 UO UO UO UO UO UO UO 0800 - 1600 UO MS UO UO UO UO UO 1600 - 2400 UO UO UO UO UO UO UO JAN/FEB 31 1 2 3 4 5 6 0000 - 0800 UO MS MS UO UO UO UO 0800 - 1600 MS MS UO UO UO UO UO 1600 - 2400 MS MS UO UO UO UO UO Week 5 7 8 9 10 11 12 13 0000 - 0800 UO UO UO UO UO UO UO

166

Coupled-cavity drift-tube linac  

DOE Patents (OSTI)

A coupled-cavity drift-tube linac (CCDTL) combines features of the Alvarez drift-tube linac (DTL) and the .pi.-mode coupled-cavity linac (CCL). In one embodiment, each accelerating cavity is a two-cell, 0-mode DTL. The center-to-center distance between accelerating gaps is .beta..lambda., where .lambda. is the free-space wavelength of the resonant mode. Adjacent accelerating cavities have oppositely directed electric fields, alternating in phase by 180 degrees. The chain of cavities operates in a .pi./2 structure mode so the coupling cavities are nominally unexcited. The CCDTL configuration provides an rf structure with high shunt impedance for intermediate velocity charged particles, i.e., particles with energies in the 20-200 MeV range.

Billen, James H. (Los Alamos, NM)

1996-01-01T23:59:59.000Z

167

BEAM TRANSVERSE ISSUES AT THE SNS LINAC  

Science Conference Proceedings (OSTI)

The Spallation Neutron Source (SNS) linac system is designed to deliver 1 GeV pulsed H- beams up to 1.56 MW. As beam power was increased from 10 kW to 680 kW in less than three years, beam loss in the accelerator systems C particularly in the superconducting linac (SCL), became more critical. In the previous studies, beam loss in the SCL was mainly attributed to longitudinal problems. However, our most recent simulations have focused on the transverse issues. These include multipole components from magnet imperfections and from dipole corrector windings of the SNS linac quadrupoles. The effects of these multipoles coupled with other transverse errors and a new possible cause of beam loss will be discussed.

Zhang, Yan [ORNL; Allen, Christopher K [ORNL; Holmes, Jeffrey A [ORNL; Galambos, John D [ORNL; Wang, Jian-Guang [ORNL

2010-01-01T23:59:59.000Z

168

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

169

Tank 241-AP-106, Grab samples, 6AP-98-1, 6AP-98-2 and 6AP-98-3 Analytical results for the final report  

SciTech Connect

This document is the final report for tank 241-AP-106 grab samples. Three grab samples 6AP-98-1, 6AP-98-2 and 6AP-98-3 were taken from riser 1 of tank 241-AP-106 on May 28, 1998 and received by the 222-S Laboratory on May 28, 1998. Analyses were performed in accordance with the ''Compatability Grab Sampling and Analysis Plan'' (TSAP) (Sasaki, 1998) and the ''Data Quality Objectives for Tank Farms Waste Compatability Program (DQO). The analytical results are presented in the data summary report. No notification limits were exceeded. The request for sample analysis received for AP-106 indicated that the samples were polychlorinated biphenyl (PCB) suspects. The results of this analysis indicated that no PCBs were present at the Toxic Substance Control Act (TSCA) regulated limit of 50 ppm. The results and raw data for the PCB analysis are included in this document.

FULLER, R.K.

1999-02-23T23:59:59.000Z

170

http://www.aps.anl.gov/aps/news/20030616.html  

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

Technology Supports SSRL Sub-Picosecond Particle Source Technology Supports SSRL Sub-Picosecond Particle Source The SPPS multilayer monochromator designed and fabricated at the APS. (Courtesy of Stanford Synchrotron Radiation Laboratory) A new photon source, the Sub-Picosecond Particle Source (SPPS), that promises to image the movement of objects down to the atomic level in subpicosecond time scales will benefit from the contributions of the Advanced Photon Source, the Optics Fabrication and Metrology Group of Argonne's Experimental Facilities Division (XFD), and BioCARS (The University of Chicago). The SPPS is being constructed at the Stanford Synchrotron Radiation Laboratory (SSRL), part of the Stanford Linear Accelerator Center (SLAC) in California. According to the article on the SSRL Web site, the SPPS "will produce and deliver x-rays from bright electron beam pulses. This project provides a fast, relatively inexpensive way to

171

Zweben APS_2007_12.ppt  

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

APS DPP 2007 2 Simple Model of SOL Turbulence particle flow current flow * Particle flux driven out at midplane, flows along B to divertor * Charge separation drives currents...

172

APS Upgrade: News | Advanced Photon Source  

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

Superconducting Undulator January 21, 2013 More than eight years of effort by Advanced Photon Source (APS) physicists, engineers, and technicians culminated on January 21, 2013,...

173

Environmentally Assisted Cracking Susceptibility Assessment of AP ...  

Science Conference Proceedings (OSTI)

Presentation Title, Environmentally Assisted Cracking Susceptibility Assessment of AP 1000 Reactor Coolant Pump Flywheel Retainer Ring A289 18Cr-18Mn...

174

Conference Center and APS Site Activity Coordination  

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

and Emergency Management Database Maintenance Personnel Conference Center and APS Site Activity Coordination Locations Conference Center - E1100E1200, Auditorium, Gallery A1100...

175

ELECTROCHEMICAL CORROSION TESTING OF TANKS 241-AN-102 & 241-AP-107 & 241-AP-108 IN SUPPORT OF ULTRASONIC TESTING  

SciTech Connect

This report presents the results of the corrosion rates that were measured using electrochemical methods for tanks 241-AN-102 (AN-102), 241-AP-107 (AP 107), and 241-AP-108 (AP-108) performed under test plant RPP-PLAN-38215. The steel used as materials of construction for AN and AP tank farms was A537 Class 1. Test coupons of A537 Class 1 carbon steel were used for corrosion testing in the AN-107, AP-107, and AP-108 tank waste. Supernate will be tested from AN-102, AP-107, and Ap-108. Saltcake testing was performed on AP-108 only.

WYRWAS RB; DUNCAN JB

2008-11-20T23:59:59.000Z

176

aps_safey_notice.qxp  

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

effects from lead exposure are a concern both at the workplace and in the home. An adult's expo- effects from lead exposure are a concern both at the workplace and in the home. An adult's expo- sure to lead is usually from occupational sources. Children are exposed (primarily at home) from surface dust, floors, and chewable surfaces contaminated with lead. Lead has no beneficial effect on humans. Between 5% and 10% of ingested lead passes from the intestinal tract into the bloodstream, which distrib- utes the lead to red blood cells, soft tissues, and bone. Lead in the body is eliminated very slowly, mainly by the kidneys and digestive tract. ANL follows the guidelines set by the Occupational Safety and Health Administration regulations in order to minimize the occupational (workplace) exposure to lead. The main source of lead at the APS is from bulk shielding materials in the form of lead bricks, lead shot,

177

ANL/APS/TB-2  

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

. Use of a Mirror as the First Optical Component for an Undulator Beamline at the APS by W. Yun, A. Khounsary, B. Lai, and E. Gluskin September 1992 . Advanced Photon Source . @ Argonne National Laboratory, Argonne, Illinois 60439 o operated by The University of Chicago for the United States Department of Energy under Contract W-31-1 09-Eng-38 Argonne National Laboratory, with facilities in the states of Ilinois and Idaho, is owned by the United States government, and operated by The University of Chicago under the provisions of a contract with the Deparment of Energy. DISCLAIMER This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, makes any waranty, express

178

APS User News, Issue 70  

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70, July 7, 2011 70, July 7, 2011 CONTENTS 1. DIRECTOR'S CORNER USER MATTERS 2. More User Mysteries Solved! 3. Several APS Users Recognized in Inaugural Class of New American Crystallographic Association Fellows Program 4. Congratulations to Keith Moffat, Winner of the ACA 2011 Patterson Award 5. Paul Fenter Wins Warren Award for X-ray Diffraction Studies 6. Energy, Enthusiasm, Cooperation, and Commitment Characterize NUFO Annual Meeting BRIEFLY NOTED -- Heads Up: User Participation in Upcoming Reviews -- Upcoming General User Proposal Deadlines -- Reminder: Registration for 2011 X-ray Science Gordon Research Conference & Seminar Closes July 9, 2011 -- Shanghai Institute of Applied Physics Workshop on Science with Free-Electron Lasers on August 20-21, 2011 =====================================================

179

aps_news_template.qxd  

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

High Pressure Collaborative Access Team (HP-CAT) High Pressure Collaborative Access Team (HP-CAT) at APS sector 16 will be a primary location for research carried our under a new grant from the National Nuclear Security Administration (NNSA). The $5.9-million, 2.75-year NNSA grant to the Geophysical Laboratory of the Carnegie Institution in Washington, D.C., under the Stewardship Science Academic Alliances program, will fund research into the behavior of materials under extreme pressure conditions at the Carnegie/Department of Energy Alliance Center (CDAC). The NNSA selected CDAC because of the leadership of its team in the development of new techniques and capabilities in high-pressure and high-temperature materials research. As principal investigator for the grant, Dr. Russell Hemley of Carnegie, explains: "There is a critical need to perform exper-

180

APS: Lighting up the future  

SciTech Connect

Work on the Advanced Photon Source (APS) at Argonne National Laboratory (ANL) involves the construction and supporting research and development for a national user facility for synchrotron radiation research in the x-ray region. The facility, when operational in 1997, will provide super-intense x-ray beams for many areas of basic research and will serve the entire US x-ray research community of several thousand users. This paper describes the pertinent features of the design, construction and planned operation of the facility; and the impact quality has had in these areas. In addition, the introduction of several quality management techniques such as total quality management, reliability/availability planning, and user interface are discussed concerning their status and success.

Potent, V.J.

1993-09-01T23:59:59.000Z

Note: This page contains sample records for the topic "aps linac coherent" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
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We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


181

On the periodic variations of geomagnetic activity indices Ap and ap H. Schreiber  

E-Print Network (OSTI)

On the periodic variations of geomagnetic activity indices Ap and ap H. Schreiber Institut fu? r 1997 / Accepted: 2 December 1997 Abstract. Yearly averages of geomagnetic activity indi- ces Ap Solar wind ± magnetosphere interaction 1 Introduction Geomagnetic activity is generated

Paris-Sud XI, Université de

182

A Stability of LCLS Linac Modulators  

SciTech Connect

Information concerning to a stability of LCLS RF linac modulators is allocated in this paper. In general a 'pulse-to-pulse' modulator stability (and RF phase as well) is acceptable for the LCLS commission and FEL programs. Further modulator stability improvements are possible and approaches are discussed based on our experimental results.

Decker, F.-J.; Krasnykh, A.; Morris, B.; Nguyen, M.; /SLAC

2012-06-13T23:59:59.000Z

183

APS/Users Operations Monthly Meetings  

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

p.m. Refreshments 2:45 p.m. APS Update - Brian Stephenson 3:05 p.m. APS-U Roadmapping - Derrick Mancini 3:25 p.m. ANL-LBL FastCCD: Current Status and Future Prospects - Alec Sandy...

184

2009 Chemistry Nobel to APS Users  

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

The First Experiment at the LCLS The First Experiment at the LCLS Linda Young Named to Head X-ray Science Division $7.9 M in ARRA Funding Brings New Instrumentation to the APS Hard X-ray Nanoprobe Earns an R&D 100 Award Winans of XSD Elected to ACS Fellowship APS News Archives: 2012 | 2011 | 2010 | 2009 2008 | 2007 | 2006 | 2005 2004 | 2003 | 2002 | 2001 2000 Subscribe to APS News rss feed 2009 Chemistry Nobel to APS Users OCTOBER 7, 2009 Bookmark and Share Clockwise from top left: Ada Yonath, Venkatraman Ramakrishnan, and Thomas Steitz. All three recipients of the 2009 Nobel Prize in Chemistry published papers on their award-winning work based on data collected at the U.S. Department of Energy's (DOE) Advanced Photon Source (APS) at Argonne National Laboratory. Between them, biochemists Thomas Steitz of Yale University, Ada Yonath of

185

APS News 2012 | Advanced Photon Source  

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

Stephen Southworth Elected to APS Fellowship Stephen Southworth Elected to APS Fellowship Stephen Southworth Elected to APS Fellowship December 19, 2012 Argonne Senior Scientist Stephen Southworth has been named a Fellow of the American Physical Society for "pioneering the development of atomic and molecular spectroscopies with third- and fourth-generation light sources..." American Physical Society Honors Decker American Physical Society Honors Decker November 19, 2012 Senior Scientist Glenn Decker has been named a fellow of the American Physical Society, an honor limited to no more than one-half of one percent of the society's membership of more than 50,000. APS X-rays Reveal Picasso's Secret APS X-rays Reveal Picasso's Secret October 15, 2012 The Illinois Institute of Technology, in conjunction with

186

APS User News-at-a-Glance, Issue 48  

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

8, August 12, 2008 8, August 12, 2008 CONTENTS MESSAGE FROM MURRAY SCIENCE NEWS 1. First Light Successfully Delivered to New Coherent X-ray Diffraction Microscope at 2-ID-B USER MATTERS 2. Renewal Plan Update: Timeline, Web Resources, and Ways You Can Participate FACILITY NEWS 3. APS Holds First Geological, Environmental, and Planetary Science Cross-cut Review 4. September 17 PUC and APSUO Steering Committee Meetings Focus on Renewal 5. Emergency Supplemental Funding Enables a Regular Schedule for 2008-3 Run PEOPLE NEWS 6. Gabrielle Long Steps Down as Division Director of XSD BRIEFLY NOTED --DOE Light Sources Coordinate Workshop Scheduling --BioCARS Hosts Workshop on Time-resolved Macromolecular Crystallography, November 20-22, 2008 --ChemMatCARS Hosts Workshop on Advanced Crystallography, December 3-5,

187

Identifying Longitudinal Jitter Sources in the LCLS Linac  

Science Conference Proceedings (OSTI)

The Linac Coherent Light Source (LCLS) at SLAC is an x-ray Free Electron Laser (FEL) with wavelengths of 0.15 nm to 1.5 nm. The electron beam stability is important for good lasing. While the transverse jitter of the beam is about 10-20% of the rms beam sizes, the jitter in the longitudinal phase space is a multiple of the energy spread and bunch length. At the lower energy of 4.3 GeV (corresponding to the longest wavelength of 1.5 nm) the relative energy jitter can be 0.125%, while the rms energy spread is with 0.025% five times smaller. An even bigger ratio exists for the arrival time jitter of 50 fs and the bunch duration of about 5 fs (rms) in the low charge (20 pC) operating mode. Although the impact to the experiments is reduced by providing pulse-by-pulse data of the measured energy and arrival time, it would be nice to understand and mitigate the root causes of this jitter. The thyratron of the high power supply of the RF klystrons is one of the main contributors. Another suspect is the multi-pacting in the RF loads. Phase measurements down to 0.01 degree (equals 10 fs) along the RF pulse were achieved, giving hints to the impact of the different sources.

Decker, Franz-Josef; /SLAC; Akre, Ron; /SLAC; Brachmann, Axel; /SLAC; Craft, Jim; /SLAC; Ding, Yuantao; /SLAC; Dowell, David; /SLAC; Emma, Paul; /SLAC; Frisch, Josef; /SLAC; Huang, Zhirong; /SLAC; Iverson, Richard; /SLAC; Krasnykh, Anatoly; /SLAC; Loos, Henrik; /SLAC; Nuhn, Heinz-Dieter; /SLAC; Ratner, Daniel; /SLAC; Smith, Tonee; /SLAC; Turner, James; /SLAC; Welch, James; /SLAC; White, William; /SLAC; Wu, Juhao; /SLAC

2012-07-06T23:59:59.000Z

188

Advanced Photon Source (APS) Colloquium Series Video Collection from 2010  

DOE Data Explorer (OSTI)

The Advanced Photon Source (APS) is a DOE Scientific User Facility located at Argonne National Laboratory. It provides this nation's most brilliant x-ray beams for research in almost all scientific disciplines. The monthly APS Colloquium series brings distinguished scientists from around the world to lecture on topics of general interest. Some of these presentations are available as integrated video and slides. The 2010 multimedia presentations available on this website are: 1) Fermilab: Present and Future, Young-kee Kim; 2) Science Opportunities at ORNL's Neutron Sources, Ian Anderson; 3) What is the Arm Climate Research Facility: Is Global Warming a Real Bias or a Statistical Anomaly? Douglas L. Sisterson; 4) Magnetic Recording Media Technology for the Tb/In2 Era, Gerardo Bertero (Wester Digital); 5) History and Solution of the Phase Problem in the Theory of Structure Determination of Crystals from X-ray Diffraction Experiments, Emil Wolf (University of Rochester); 6) Dynamical Studies Using Coherent X-rays: A Short Review and Prospects for the Future, Sunil K. Sinha (University of California, San Diego); 7) Oil, Water, and Wildlife: The Gulf of Mexico Disaster and Related Environmental Issues, John W. Bickman (Purdue University); 8) Experimental Discovery of Topological Insulators and Related Superconductors, M. Zahid Hasan (Princeton University); 9) LCLS - The X-ray Laser Has Turned On, Uwe Bergmann; 10) Small Angle X-ray Scattering from Biological Macromolecules and Nanoparticles, Dimitri Svergun (European Molecular Biology Laboratory).

189

Advanced Photon Source (APS) Colloquium Series Video Collection from 2008  

DOE Data Explorer (OSTI)

The Advanced Photon Source (APS) at Argonne National Laboratory is the home of this nation's most brilliant x-ray beams for research in almost all scientific disciplines. The monthly APS Colloquium series brings distinguished scientists from all over the country and abroad to lecture on topics of general interest. Some of these presentations are available as integrated video and slides. The 2008 multimedia presentations available on this website are: 1) Modern Optical Diagnostics for Technical Combustion Research, Alfred Leipertz, Erlangen Graduate School in Advanced Optical Technologies; 2) Exploiting Photo-induced Reactions in Polymer Blends to Create Hierarchically Ordered, Defect-free Materials, Anna Balazs, University of Pittsburgh; 3) New Composite Thermoelectric Materials for Macro-size Applications, Mildred Dresselhaus, MIT; 4) Trends and Opportunities at the Interface of Experiment and Simulation in Micromechanics of Polycrystalline Solids, Paul Dawson, Cornell University; 5) Biomedical Imaging with Partially Coherent, Laser-Driven Plasma X-Ray Sources, Christoph Rose-Petruck, Brown University; 6) Secrets in the Ancient Goatskins: X-Rays Reveal Archimedes' Oldest Writings, Uwe Bergmann, SLAC; 7) Crystallography Without Crystals: Determining the Structure of Individual Biological Molecules and Nanoparticles, Abbas Ourmazd, University of Wisconsin-Milwaukee.

190

APS undulator radiation: First results  

Science Conference Proceedings (OSTI)

The first undulator radiation has been extracted from the Advanced Photon Source (APS). The results from the characterization of this radiation are very satisfactory. With the undulator set at a gap of 15.8 mm (K=1.61), harmonics as high as the 17th were observed using a crystal spectrometer. The angular distribution of the third-harmonic radiation was measured, and the source was imaged using a zone plate to determine the particle beam emittance. The horizontal beam emittance was found to be 6.9 {plus_minus} 1.0 nm-rad, and the vertical emittance coupling was found to be less than 3%. The absolute spectral flux was measured over a wide range of photon energies, and it agrees remarkably well with the theoretical calculations based on the measured undulator magnetic field profile and the measured beam emittance. These results indicate that both the emittance of the electron beam and the undulator magnetic field quality exceed the original specifications.

Cai, Z.; Dejus, R.J.; Hartog, P.D.

1995-12-31T23:59:59.000Z

191

Charter/Bylaws for an APS Partner Users Council  

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

Users, which have entered into agreements with the APS either to build and operate facilities at the APS or to otherwise significantly enhance the programs of the APS. As a...

192

Bunch Shape Monitor for SSCL linac  

SciTech Connect

The Superconducting Super Collider Laboratory and the Institute for Nuclear Research ore collaboratively developing a Bunch Shape Monitor diagnostics for commission the SSCL linac. The Bunch Shape Monitor is designed to measure the intensity of beam as a function of time over the micro-bunch of the beam. Design resolution for the SSCL monitors is approximately 7 psec. The first monitor will operate at the fundamental frequency of 428 MHz and will be used to measure the output beam of the RFQ Linac. First available results will be presented and compared with predictions. Further development will allow the monitors to fit in a standard SSCL beam box and one will operate at the third harmonic of 428 MHz. Proposals to use the Bunch Shape Monitor to measure the longitudinal phase space distribution of the beam will be discussed.

Hurd, J.W.; Arbique, G.M.; Crist, C.E.; Guy, F.W.; Leifeste, G.T.; Raparia, D.; Saadatmand, K.; Swenson, D.A. [Superconducting Super Collider Lab., Dallas, TX (United States); Esin, S.; Feschenko, A.; Stepanov, A.; Mirzojan, A. [AN SSSR, Moscow (Russian Federation). Inst. Yadernykh Issledovanij

1993-05-01T23:59:59.000Z

193

HIGH CURRENT ENERGY RECOVERY LINAC AT BNL.  

SciTech Connect

We present the design and parameters of an energy recovery linac (ERL) facility, which is under construction in the Collider-Accelerator Department at BNL. This R&D facility has the goal of demonstrating CW operation of an ERL with an average beam current in the range of 0.1-1 ampere and with very high efficiency of energy recovery. The possibility of a future upgrade to a two-pass ERL is also being considered. The heart of the facility is a 5-cell 703.75 MHz super-conducting RF linac with strong Higher Order Mode (HOM) damping. The flexible lattice of the ERL provides a test-bed for exploring issues of transverse and longitudinal instabilities and diagnostics of intense CW electron beams. This ERL is also perfectly suited for a far-IR FEL. We present the status and plans for construction and commissioning of this facility.

LITVINENKO,V.N.; BEN-ZVI,I.; BARTON,D.S.; ET AL.

2005-05-16T23:59:59.000Z

194

Arizona Public Service Company APS | Open Energy Information  

Open Energy Info (EERE)

Public Service Company (APS)" Retrieved from "http:en.openei.orgwindex.php?titleArizonaPublicServiceCompanyAPS&oldid342317" Categories: Clean Energy Organizations...

195

Six Berkeley Lab (Three ALS) Scientists Are 2012 APS Fellows  

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

Six Berkeley Lab (Three ALS) Scientists Are 2012 APS Fellows Print This year's American Physical Society (APS) Fellows include six scientists from Berkeley Lab, three of whom are...

196

DOE Environmental Sustainability Award to Three from APS  

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

2004 | 2003 | 2002 | 2001 2000 Subscribe to APS News rss feed DOE Environmental Sustainability Award to Three from APS DECEMBER 18, 2009 Bookmark and Share At the presentation...

197

Instructions on Entering Publications into the APS Database  

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

Conferences Seminars & Meetings Publications Annual Reports APS Upgrade Courses and Schools Graduate Programs Scientific Software Subscribe to APS Recent Publications rss feed...

198

APS User News-at-a-Glance, Issue 54  

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

abstract (depending on subscription requirements), hyperlinks, complete URLs, animations and QuickTime clips, and a list of 2008 APS publications. APS Science 2003 through...

199

APS User News-at-a-Glance, Issue 23  

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

faster than those viewable with today's "ultrafast" pulsed lasers. Full story and animations: http:focus.aps.orgstoryv13st25 4. Reorganized APS Group Offers More...

200

APS User News-at-a-Glance Issue 18  

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

Holiday Shutdown Affects Many Argonne Services Operations Update: APS Achieves 99% Availability APS User News-at-a-Glance Issue 18: December 20, 2002 1. Message from Murray...

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


201

Rio Tinto Alcan Recent Developments from AP60 Jonquiere Plant ...  

Science Conference Proceedings (OSTI)

... the most recent information on the construction of the AP60 Phase 1 Plant of ... The advantages of the AP60 cell technology in terms of productivity, power...

202

Analysis on linac quadrupole misalignment in FACET commissioning 2012  

Science Conference Proceedings (OSTI)

In this note, the analysis on linac quadrupole misalignment is presented for the FACET linac section LI05-09 plus LI11-19. The effectiveness of the beam-based alignment technique is preliminarily confirmed by the measurement. Beam-based alignment technique was adopted at SLAC linac since SLC time. Here the beam-based alignment algorithms are further developed and applied in the FACET commissioning during 2012 run.

Sun, Yipeng; /SLAC

2012-07-05T23:59:59.000Z

203

Emittance Measurement and Modeling of the ALS 50 MeV Linac to Booster Line  

E-Print Network (OSTI)

Measurement and Modeling of the ALS 50 Me V Linac to Boosterhave been measured for the ALS LINAC through non-linear X2Measurement and Modeling of the ALS 50 Me V Linac to Booster

Bengtsson, J.

2011-01-01T23:59:59.000Z

204

APS Radioactive Sample Safety Review Committee  

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

Radioactive Sample Safety Review Committee Radioactive Sample Safety Review Committee March 6, 2012 1. Purpose The APS Safety Radioactive Sample Safety Review Committee (RSSRC) advises the AES Division Director on the radioactive samples to be used at the APS and the adequacy of controls in place for the duration of their use. The RSSRC reviews the radioactive material samples proposed to be run at the APS to ensure that they fall within established safety envelopes of the APS. 2. Membership The RSSRC members are appointed by the AES Division Director. The current members of the RSRC are: B. Glagola AES - Chair S. Davey AES G. Pile AES L. Soderholm CHM J. Vacca RSO W. VanWingeren AES M. Beno XSD E. Alp XSD M. Rivers PUC 3. Method The AES User Safety Coordinator will notify the RSSRC of any samples

205

APS - Residential Energy Efficient Rebate Program (Arizona) ...  

Open Energy Info (EERE)

must have value of R-19 or less: replacement insulation qualifies for rebate through value of R-30. Installation Requirements For the APS AC Rebate, units must be installed by...

206

APS Director Stephenson Named Argonne Distinguished Fellow  

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

Advanced Photon Source, Canadian Light Source Strengthen Ties, Expand X-ray Advanced Photon Source, Canadian Light Source Strengthen Ties, Expand X-ray Technology and Research Rose of APS and CNM One of Four DOE Early Career Award Winners Scientists Close-In on Artificial Spider Silk Ekiert Earns 2012 APSUO Franklin Award for Studies of Influenza Virus Clever Apes on WBEZ: Breaking the Fossil Record APS News Archives: 2012 | 2011 | 2010 | 2009 2008 | 2007 | 2006 | 2005 2004 | 2003 | 2002 | 2001 2000 Subscribe to APS News rss feed APS Director Stephenson Named Argonne Distinguished Fellow JULY 19, 2012 Bookmark and Share Brian Stephenson Brian Stephenson has been named one of five Argonne National Laboratory Distinguished Fellows for 2012. Stephenson is the Argonne Associate Laboratory Director for Photon Sciences and Director of the U.S. Department

207

APS News 2011 | Advanced Photon Source  

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

Moffat Appointed Senior Advisor for Life Sciences at the APS Moffat Appointed Senior Advisor for Life Sciences at the APS Moffat Appointed Senior Advisor for Life Sciences at the APS November 30, 2011 Prof. Keith Moffat of the University of Chicago has been appointed Senior Advisor for Life Sciences at the APS to provide a stronger linkage between the Advanced Photon Source and the life sciences community. Gluskin of ASD Elected to AAAS Fellowship Gluskin of ASD Elected to AAAS Fellowship December 2, 2011 Efim Gluskin of the Argonne Accelerator Systems Division has been elected to Fellowship in the American Association for the Advancement of Science "for leadership in the development of ultra-bright x-ray sources utilized at third generation synchrotron sources and x-ray lasers." Jacobsen of XSD Elected to American Physical Society Fellowship

208

AP Holdings LLC | Open Energy Information  

Open Energy Info (EERE)

AP Holdings LLC Place Texas Utility Id 56571 Utility Location Yes Ownership R ISO Ercot Yes ISO NY Yes Activity Retail Marketing Yes References EIA Form EIA-861 Final Data File for...

209

The Silk Road Leads to the APS  

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The silk road leads to the APS Lori Khatchadourian (University of Michigan) and Adam Smith (The University of Chicago) switch sample mounts at the ChemMatCARS 15-ID-D beamline. The...

210

PLEASE PRINT APS USER AGREEMENT QUESTIONNAIRE  

E-Print Network (OSTI)

? * _______ Advanced Leadership Computing Facility (ALCF) _______ Advanced Photon Source (APS) _______ Argonne Tandem are not permitted to do hands-on work at any Argonne User Facilities until a User Agreement (UA known") ______________________________ 5. Which Argonne user facility will be hosting you

Kemner, Ken

211

The APS and You | Advanced Photon Source  

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The APS and You One-page articles that describe highlights of research at the Advanced Photon Source and how that research can have far-reaching impact on nearly every aspect of...

212

Physicist Andris Dimits elected 2012 APS fellow  

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112013 | NR-13-02-03 Physicist Andris Dimits elected 2012 APS fellow Breanna Bishop, LLNL, (925) 423-9802, bishop33@llnl.gov Printer-friendly Andris Dimits Photo by Jacqueline...

213

Superconducting radiofrequency linac development at Fermilab  

SciTech Connect

As the Fermilab Tevatron Collider program draws to a close, a strategy has emerged of an experimental program built around the high intensity frontier. The centerpiece of this program is a superconducting H- linac that will support world leading programs in long baseline neutrino experimentation and the study of rare processes. Based on technology shared with the International Linear Collider, Project X will provide multi-MW beams at 60-120 GeV from the Main Injector, simultaneous with very high intensity beams at lower energies. Project X also supports development of a Muon Collider as a future facility at the energy frontier.

Holmes, Stephen D.; /Fermilab

2009-10-01T23:59:59.000Z

214

An overview of LINAC ion sources  

SciTech Connect

This paper discusses ion sources used in high-duty-factor proton and H{sup -} Linacs as well as in accelerators utilizing multi-charged heavy ions, mostly for nuclear physics applications. The included types are Electron Cyclotron Resonance (ECR) sources as well as filament and rf driven multicusp sources. The paper does not strive to attain encyclopedic character but rather to highlight major lines of development, peak performance parameters and type-specific limitations and problems of these sources. The main technical aspects being discussed are particle feed, plasma generation and ion production by discharges, and plasma confinement.

Keller, Roderich [Los Alamos National Laboratory

2008-01-01T23:59:59.000Z

215

Novel Insertion Devices at the APS  

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Agenda Insertion Device Workshop Thursday 5 Dec. 2002. Bldg. 402 E1100/1200 Click on link to see presentation slides. 8:50 .... Welcome J. Murray Gibson 9:00 .... Current APS Insertion Devices Roger Dejus 9:35 .... New Possibilities for IDs at the APS Shigemi Sasaki 10:10 .... Superconductiong Undulator Possibilities Bob Kustom . 10:30 .... Break . . 10:55 Superconductive cryogen-free in-vacuo undulators for storage rings Robert Rossmanith 11:10 .... A novel type of undulator Gopal Shenoy 11:30 .... APS storage ring considerations Nick Sereno/Glenn Decker . 12:00 .... Lunch . .... . Insertion Devices at other Sources 1:30 .... IDs elsewere I: ESRF Joel Chavanne 2:15 .... IDs elsewhere II: ELETTRA Bruno Diviacco . 3:00 .... Break . . .... . User Requirements and Desires 3:30 .... E. E. Alp (Inelastic X-ray scattering)

216

Radioactive Samples / Materials at the APS  

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Using Radioactive Samples / Materials at the APS Using Radioactive Samples / Materials at the APS The use of radioactive samples requires additional information for review and approval. All proposed experiments involving radioactive samples will be reviewed by the APS Radioactive Sample Safety Review Committee (RSSRC). The review will be on a graded basis. Hence, the experimenters are strongly advised to send in the experiment proposal in detail at least 2 months before the expected scheduled date of the experiment. Previously approved containment, isotopes and weights can be submitted as late as 2 weeks in advance. If your ESAF was submitted less than seven (7) days in advance of its scheduled start date you may be delayed to allow time for a safety review. The following guidelines are to be followed for all experiments with

217

UC/APS Mini-Symposium  

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UC/APS Mini-Symposium UC/APS Mini-Symposium Host: Ali Khounsary December 10, 2003 Room A1100 APS, Argonne National Laboratory UC Program for Research in Cell Injury and Repair Alteration of cellular proteins or organelles due to reactive chemicals or high-energy physical stresses represents the most common mechanism of tissue injury leading to tissue necrosis. Diseases such as myocardial infarction, cerebrovascular stroke, cerebral palsy, burns, electrical shock, and acute radiation poisoning are examples. The success of modern gene therapy also depends on repair of the cell membrane after insertion of new genetic material. When normal cellular repair functions are incapable of managing the cell injury, pharmaceutical intervention can be lifesaving. The mission of the Center for Molecular Repair is to investigate strategies

218

APS User News, Special Issue 72  

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SPECIAL ISSUE 72, September 8, 2011 SPECIAL ISSUE 72, September 8, 2011 Message from Eric Isaacs: Stephenson Named APS Director To the APS User Community, I'm extremely pleased to announce that Brian Stephenson has been appointed Associate Laboratory Director (ALD) for Photon Sciences, effective September 1, 2011. The directorate comprises three research and support divisions centered on Argonne's Advanced Photon Source (APS). As you know, Brian has been interim ALD for Photon Sciences since October 2010, proving his abilities to lead both the directorate and the Advanced Photon Source Upgrade project effort. He is a recognized and widely known world leader in X-ray science with vast knowledge and expertise in synchrotrons, beamlines, and instrumentation. He received an R&D 100 award

219

APS News 2008 | Advanced Photon Source  

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From: Nature Research Highlights From: Nature Research Highlights From: Nature Research Highlights DECEMBER 1, 2008 APS Renewal White Paper APS Renewal White Paper November 21, 2008 The white paper prepared for the Department of Energy, Office of Science, Office of Basic Energy Sciences by the management and users of the Advanced Photon Source to set the foundation for renewal of this vital national research facility is now available in PDF format. Winner of AAAS Science Education Prize Visits Argonne Winner of AAAS Science Education Prize Visits Argonne October 23, 2008 Diane Riendeau, winner of the 2008 American Association for the Advancement of Science Leadership in Science Education Prize for High School Teachers, paid a visit to Argonne National Laboratory. SESAME and the APS: Opening Doors Helps the Light Shine In

220

APS Bending Magnet X-rays and  

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Irradiation of Nd-Fe-B Permanent Magnets with Irradiation of Nd-Fe-B Permanent Magnets with APS Bending Magnet X-rays and 60 Co γ-rays J. Alderman and P.K. Job APS Operations Division Advanced Photon Source J. Puhl Ionizing Radiation Division National Institute of Standards and Technology June 2000 Table of Contents Introduction Radiation-Induced Demagnetization of Permanent Magnets Resources Required γ-ray Irradiation Results and Analysis of γ-ray Irradiation X-ray Irradiation Results and Analysis of X-ray Irradiation Summary and Conclusions Acknowledgements References Tables and Figures Introduction The Advanced Photon Source (APS), as well as other third-generation synchrotron light sources, uses permanent magnets in the insertion devices to produce x-rays for scientific

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221

On Quantum Coherence Effects in Photo and Solar Cells  

E-Print Network (OSTI)

We show that quantum coherence can increase the quantum efficiency of various thermodynamic systems. For example, we can enhance the quantum efficiency for a quantum dot photocell, a laser based solar cell and the photo-Carnot quantum heat engine. Our results are fully consistent with the laws of thermodynamics contrary to comments found in the paper of A.P. Kirk, Phys. Rev. Lett. 106, 048703 (2011).

Kimberly Chapin; Konstantin Dorfman; Anatoly Svidzinsky; Marlan Scully

2010-12-23T23:59:59.000Z

222

SNS LINAC MODULATOR OPERATIONAL HISTORY AND PERFOMANCE  

Science Conference Proceedings (OSTI)

Fourteen High Voltage Converter Modulators (HVCM) were initially installed at the Spallation Neutron Source Linear Accelerator (SNS Linac) at the Oak Ridge National Laboratory in 2005. A fifteenth HVCM was added in 2009. Each modulator provides a pulse of up to 140 kV at a maximum width of 1.35 msec. Peak power level is 11 MW with an 8% duty factor. The HVCM system must be available for neutron production (NP) 24/7 with the exception being two, 6-week maintenance periods per year. HVCM reliability is one of the most important factors to maximize Linac availability and achieve SNS performance goals. During the last few years several modifications have been implemented to improve the overall system reliability. This paper presents operational history of the HVCM systems and examines failure mode statistical data since the modulators began operating at 60 Hz. System enhancements and upgrades aimed at providing long term reliable operation with minimal down time are also discussed in the paper.

Peplov, Vladimir V [ORNL; Anderson, David E [ORNL; Cutler, Roy I [ORNL; Hicks, Jim [ORNL; Saethre, Robert B [ORNL; Wezensky, Mark W [ORNL

2011-01-01T23:59:59.000Z

223

PHYSICS RESULTS OF THE NSLS-II LINAC FRONT END TEST STAND  

Science Conference Proceedings (OSTI)

The Linac Front End Test Stand (LFETS) was installed at the Source Development Laboratory (SDL) in the fall of 2011 in order to test the Linac Front End. The goal of these tests was to test the electron source against the specifications of the linac. In this report, we discuss the results of these measurements and the effect on linac performance.

Fliller R. P.; Gao, F.; Yang, X.; Rose, J.; Shaftan, T.; Piel, C

2012-05-20T23:59:59.000Z

224

APS User News-at-a-Glance, Issue 1  

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Electronic Bulletin Established for APS Users Electronic Bulletin Established for APS Users Web-based Independent Investigator Proposal Submission Goes "Live" Call for APS User Publications Reminder: APS Access Requirements for Non-U.S. Citizens APS Program Evaluation Board Meeting, October 11-13, 2000 Highlights of the Next User Run APS User News-at-a-Glance Issue 1; September 20, 2000 1. Electronic Bulletin Established for APS Users This issue of APS User News-at-a-Glance is the first of periodic electronic news bulletins for APS users. If you've received this issue by direct e-mail, you are already subscribed and need to do nothing further to receive future bulletins. If you prefer not to receive these messages, you can unsubscribe by replying to this e-mail and placing the word "unsubscribe" in the subject line of your e-mail reply.

225

PERFORMANCE OF THE DIAGNOSTICS FOR NSLS-II LINAC COMMISSIONING  

Science Conference Proceedings (OSTI)

The National Synchrotron Light Source II (NSLS-II) is a state of the art 3-GeV third generation light source currently under construction at Brookhaven National Laboratory. The NSLS-II injection system consists of a 200 MeV linac, a 3-GeV booster synchrotron and associated transfer lines. The transfer lines not only provide a means to deliver the beam from one machine to another, they also provide a suite of diagnostics and utilities to measure the properties of the beam to be delivered. In this paper we discuss the suite of diagnostics that will be used to commission the NSLS-II linac and measure the beam properties. The linac to booster transfer line can measure the linac emittance with a three screens measurement or a quadrupole scan. Energy and energy spread are measured in a dispersive section. Total charge and charge uniformity are measured with wall current monitors in the linac and transformers in the transfer line. We show that the performance of the diagnostics in the transfer line will be sufficient to ensure the linac meets its specifications and provides a means of trouble shooting and studying the linac in future operation.

Fliller III, R.; Padrazo, D.; Wang, G.M.; Heese, R.; Hseuh H.-C.; Johanson, M.; Kosciuk, B.N.; Pinayev, I.; Rose, J.; Shaftan, T.; Singh, O.

2011-03-28T23:59:59.000Z

226

C-A/AP/#266 January 2007  

E-Print Network (OSTI)

C-A/AP/#266 January 2007 Internal Cost Review of the RHIC II Project Michael Harrison Erik Johnson 11973 #12;BROOKHAVEN NATIONAL LABORATORY Internal Cost Review of the RHIC II Project Physics 266;1 of 7 Summary Project costs were conservatively estimated in several areas and opportunities' exist

227

refractory_retain_whyte_APS07.ppt  

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APS-DPP Whyte Nov. 07 APS-DPP Whyte Nov. 07 Hydrogenic Fuel Retention in Refractory Metals D.G. Whyte 1 , B. Lipschultz 1 , J. Irby 1 , G. Wright 2 1 Plasma Science & Fusion Center, MIT, Cambridge USA 2 FOM-Rijnhuizen, Netherlands APS Division of Plasma Physics Meeting Mini-Conference: First Micron of the Wall November 2007, Orlando, Florida APS-DPP Whyte Nov. 07 Why are refractory metals (Mo, W) favored to minimize retained hydrogenic fuel in plasma-facing materials? * Carbon:  Non-permeable  Plasma-deposited surface layers accumulate T/C ~ 1. * Refractory metals  Highly permeable to H  Permeation sensitive to T.  Very low intrinsic solubility. * Inventory in cm thick Mo/W?  C-Mod: 10 m 2 → 10 21 D.  ITER: 10 3 m 2 → 0.2 g T 1 mm 3 nm ( D Δt ) 1/2 ~10 -7 ~1 c 0 (H/atom) ~10 -10 ~10 -21 D

228

High-Performance Beam Simulator for the LANSCE Linac  

SciTech Connect

A high performance multiparticle tracking simulator is currently under development at Los Alamos. The heart of the simulator is based upon the beam dynamics simulation algorithms of the PARMILA code, but implemented in C++ on Graphics Processing Unit (GPU) hardware using NVIDIA's CUDA platform. Linac operating set points are provided to the simulator via the EPICS control system so that changes of the real time linac parameters are tracked and the simulation results updated automatically. This simulator will provide valuable insight into the beam dynamics along a linac in pseudo real-time, especially where direct measurements of the beam properties do not exist. Details regarding the approach, benefits and performance are presented.

Pang, Xiaoying [Los Alamos National Laboratory; Rybarcyk, Lawrence J. [Los Alamos National Laboratory; Baily, Scott A. [Los Alamos National Laboratory

2012-05-14T23:59:59.000Z

229

TRANSVERSE MATCHING PROGRESS OF THE SNS SUPERCONDUCTING LINAC  

Science Conference Proceedings (OSTI)

Experience using laser-wire beam profile measurement to perform transverse beam matching in the SNS superconducting linac is discussed. As the SNS beam power is ramped up to 1 MW, transverse beam matching becomes a concern to control beam loss and residual activation in the linac. In our experiments, however, beam loss is not very sensitive to the matching condition. In addition, we have encountered difficulties in performing a satisfactory transverse matching with the envelope model currently available in the XAL software framework. Offline data analysis from multi-particle tracking simulation shows that the accuracy of the current online model may not be sufficient for modeling the SC linac.

Zhang, Yan [ORNL; Cousineau, Sarah M [ORNL; Liu, Yun [ORNL

2011-01-01T23:59:59.000Z

230

A Program for Optimizing SRF Linac Costs  

Science Conference Proceedings (OSTI)

Every well-designed machine goes through the process of cost optimization several times during its design, production and operation. The initial optimizations are done during the early proposal stage of the project when none of the systems have been engineered. When a superconducting radio frequency (SRF) linac is implemented as part of the design, it is often a difficult decision as to the frequency and gradient that will be used. Frequently, such choices are made based on existing designs, which invariably necessitate moderate to substantial modifications so that they can be used in the new accelerator. Thus the fallacy of using existing designs is that they will frequently provide a higher cost machine or a machine with sub-optimal beam physics parameters. This paper describes preliminary results of a new software tool that allows one to vary parameters and understand the effects on the optimized costs of construction plus 10 year operations of an SRF linac, the associated cryogenic facility, and controls, where operations includes the cost of the electrical utilities but not the labor or other costs. It derives from collaborative work done with staff from Accelerator Science and Technology Centre, Daresbury, UK [1] several years ago while they were in the process of developing a conceptual design for the New Light Source project. The initial goal was to convert a spread sheet format to a graphical interface to allow the ability to sweep different parameter sets. The tools also allow one to compare the cost of the different facets of the machine design and operations so as to better understand the tradeoffs.

Powers, Thomas J. [JLAB

2013-04-01T23:59:59.000Z

231

Bioener ApS formerly FLS milj a s | Open Energy Information  

Open Energy Info (EERE)

Bioener ApS formerly FLS milj a s Bioener ApS formerly FLS milj a s Jump to: navigation, search Name Bioener ApS (formerly FLS miljø a/s) Place Copenhagen, Denmark Zip 2500 Product Industrial boiler manufacturer and EPC (Engineering, Procurement and Construction) contractor focussing on straw-firing. Coordinates 55.67631°, 12.569355° 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":55.67631,"lon":12.569355,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

232

Coherence-Enhanced Lasing  

E-Print Network (OSTI)

Quantum coherence and interference effects in atomic and molecular physics has been extensively studied due to intriguing counterintuitive physics and potential important applications. In this paper we studied one such scenario of using quantum coherence to generate and enhanced gain in extreme ultra-violet(XUV)(@58.4nm in Helium) and infra-red(@794.76nm in Rubidium) regime of electromagnetic radiation. We show that using moderate external coherent drive, a substantial enhancement in the energy of the lasing pulse can be achieved under optimal conditions. The role of coherence is also discussed here.

Jha, Pankaj K

2013-01-01T23:59:59.000Z

233

Generation of Coherent X-Ray Radiation through Modulation Compression  

Science Conference Proceedings (OSTI)

In this paper, we propose a scheme to generate tunable coherent X-ray radiation for future light source applications. This scheme uses an energy chirped electron beam, a laser modulator, a laser chirper and two bunch compressors to generate a prebunched kilo-Ampere current electron beam from a few tens Ampere electron beam out of a linac. The initial modulation energy wavelength can be compressed by a factor of 1 + h{sub b}R{sub 56}{sup a} in phase space, where h{sub b} is the energy bunch length chirp introduced by the laser chirper, R{sub 56}{sup a} is the momentum compaction factor of the first bunch compressor. As an illustration, we present an example to generate more than 400 MW, 170 attoseconds pulse, 1 nm coherent X-ray radiation using a 60 A electron beam out of the linac and 200 nm laser seed. Both the final wavelength and the radiation pulse length in the proposed scheme are tunable by adjusting the compression factor and the laser parameters.

Qiang, Ji; /LBL, Berkeley; Wu, Juhao; /SLAC

2012-06-12T23:59:59.000Z

234

APS User News-at-a-Glance, Issue 4  

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4; February 5, 2001 4; February 5, 2001 Contents: 1. Moncton Announces Return to the APS Full-time Call for Submissions: APS User Activity Report 2000 Argonne Guest House Upgrades Telephone System APS Compton Award Nominations: First Call What's Ahead? 1. Moncton Announces Return to the APS Full-time (Contact: rt@aps.anl.gov) In a memo to APS staff, dated January 23, 2001, David Moncton announced his intention to return to Argonne and resume full-time responsibilities as Associate Laboratory Director for the APS effective March 1, 2001. This date marks the end of his two-year commitment to the Spallation Neutron Source (SNS) project at Oak Ridge. In describing his decision, Moncton mentioned the rewarding challenge posed by the SNS project and expressed his pride in the contributions made by APS staff

235

Instructions on Entering Publications into the APS Database  

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

Methods to enter user publications into the APS publication database Methods to enter user publications into the APS publication database The APS Publications Database is a searchable compendium of information on results from research at the APS, and the official source for listings of APS-related publications. It is the source for reports to APS review and advisory committees (including the APS Scientific Advisory Committee); the U.S. Department of Energy; and other government agencies. Maintaining complete and up-to-date records is of great importance to the facility and its users. Please note that the database is also the repository for dissertations, abstracts, awards, and invited talks. In this way, we hope to build a comprehensive record of information about research at the APS. We appreciate your help in keeping this important database current, and

236

APS User News-at-a-Glance, Issue 41  

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the Facility menu of the main APS web site, http:www.aps.anl.gov. In the beamline directory, each beamline has a page that gives a technical overview in the following areas:...

237

Six Berkeley Lab (Three ALS) Scientists Are 2012 APS Fellows  

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

Six Berkeley Lab (Three ALS) Scientists Are 2012 APS Fellows Six Berkeley Lab (Three ALS) Scientists Are 2012 APS Fellows Print Friday, 07 December 2012 00:00 This year's American...

238

APS Wins Three R&D 100 Awards  

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3rd, 2000 APS Wins Three R&D 100 Awards X-Ray Scanning Microprobe Three technologies developed for use at the U.S. Department of Energy's Advanced Photon Source (APS) at Argonne...

239

AP Holdings LLC (New York) | Open Energy Information  

Open Energy Info (EERE)

icon AP Holdings LLC (New York) Jump to: navigation, search Name AP Holdings LLC Place New York Utility Id 56571 References EIA Form EIA-861 Final Data File for 2010 -...

240

Office of Science Approves Critical Decision 1 for APS Upgrade...  

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

2008 | 2007 | 2006 | 2005 2004 | 2003 | 2002 | 2001 2000 Subscribe to APS News rss feed Office of Science Approves Critical Decision 1 for APS Upgrade Project SEPTEMBER 15, 2011...

Note: This page contains sample records for the topic "aps linac coherent" 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.


241

Energy Spread Compensation for Multi-Bunch Linac Operation Mode  

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

ENERGY SPREAD COMPENSATION FOR MULTI-BUNCH LINAC OPERATION MODE D. Mihalcea, Northern Illinois University, DeKalb, IL 60115, USA W. Gai, J. G. Power, ANL, Argonne, IL 60439, USA...

242

High Power Superconducting Continuous Wave Linacs for Protons...  

Office of Science (SC) Website

(ANL) Developed in: Current Result of NP research: Spin-off of high power driver linac R&D for the FRIB project Application currently being supported by: DOE Office of Nuclear...

243

EBIS as an injector for heavy-ion linacs  

SciTech Connect

The Electron Beam Ion Source (EBIS), because of its high-charge states and pulsed operation, is ideally suited as an injector for a heavy-ion linac operating at a low duty factor. Although presently in use with conventional linacs, the low emittance and the large yield of highly charged ions in each pulse make the EBIS even more interesting as an injector for the new linac accelerating structures such as the alternating-phase-focusing (APF) structure or the radio-frequency quadrupole (RFQ) structure. These new structures could be used with an EBIS to produce a small, efficient, low-duty-cycle accelerator. Coupled to a conventional linac, the resulting accelerator could be used for heavy-ion medical therapy or nuclear physics, or it could be used as an injector for a synchrotron or storage ring.

Hamm, R.W.

1979-01-01T23:59:59.000Z

244

Compensation of Beam Loading in the ALS Injector Linac  

E-Print Network (OSTI)

to offset the beam loading. ALS Injector Requirements Gun.gun, bunchers, and 50 MeV linac of the ALS injection system.The ALS injector design has been described in previous

Selph, F.

1988-01-01T23:59:59.000Z

245

Tank characterization for Double-Shell Tank 241-AP-102  

SciTech Connect

This document provides the characterization information and interprets the data for Double-Shell Tank AP-102.

DeLorenzo, D.S.; DiCenso, A.T.; Amato, L.C.; Weyns-Rollosson, M.I.; Smith, D.J. [Los Alamos Technical Associates, Inc., Kennewick, WA (United States); Simpson, B.C.; Welsh, T.L. [Westinghouse Hanford Co., Richland, WA (United States)

1994-08-01T23:59:59.000Z

246

Geophysical Applications of Partial Wavelet Coherence and Multiple Wavelet Coherence  

Science Conference Proceedings (OSTI)

In this paper, the application of partial wavelet coherence (PWC) and multiple wavelet coherence (MWC) to geophysics is demonstrated. PWC is a technique similar to partial correlation that helps identify the resulting wavelet coherence (WTC) ...

Eric K. W. Ng; Johnny C. L. Chan

2012-12-01T23:59:59.000Z

247

Review of Westinghouse AP1000 LLW Management Program  

Science Conference Proceedings (OSTI)

Significant operational cost and waste volume reduction savings opportunities exist, based upon current low level waste (LLW) treatment technology gains, for future operators of the AP1000 reactors. This report is a summary of a review of the AP1000 Radioactive Waste Management Program as defined in the EPRI Utility Requirements Document (URD) and the AP1000 Design Control Document (DCD).

2003-11-19T23:59:59.000Z

248

I am the antenna: accurate outdoor AP location using smartphones  

Science Conference Proceedings (OSTI)

Today's WiFi access points (APs) are ubiquitous, and provide critical connectivity for a wide range of mobile networking devices. Many management tasks, e.g. optimizing AP placement and detecting rogue APs, require a user to efficiently determine the ... Keywords: access point location, smartphones, wifi

Zengbin Zhang; Xia Zhou; Weile Zhang; Yuanyang Zhang; Gang Wang; Ben Y. Zhao; Haitao Zheng

2011-09-01T23:59:59.000Z

249

12th Users Meeting for the APS  

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

April 29 - May 1, 2003 Argonne National Laboratory Argonne, Illinois DATES TO REMEMBER April 1 Abstract deadline Registration deadline for non-U.S. citizens April 7 Housing deadline April 15 Registration deadline ..... Adjunct Meetings APSUO Steering Committee Elections Banquet Call for Poster Abstracts Compton Award Comprehensive Program Exhibitors/Sponsors General Information Schedule-at-a-Glance Travel and Housing Arrangements Workshop Descriptions ... APS Users Organization Steering Committee Paul Zschack, Chairman Stephen Durbin, Vice-Chairman John Budai Lin Chen David Cookson Pulak Dutta Dean Haeffner Lisa Keefe Steven Muchmore John Rose Amy Rosenzweig Sunil Sinha Brian Stephenson Susan Strasser, APS Liaison Eric Isaacs, ex officio ... Twelfth Users Meeting Committee Stephen Durbin--Scientific Program and Workshops Chair

250

Photoneutron production inside the APS Storage Ring  

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4 4 Neutron Fluence Estimates Inside the APS Storage Ring During Normal Operation P.K. Job and J. Alderman Advanced Photon Source Argonne National Laboratory April 2002 Neutron Fluence Estimates Inside the APS Storage Ring During Normal Operation P.K. Job and J. Alderman Advanced Photon Source Argonne National Laboratory April 2002 Introduction In an electron storage ring, neutrons are generated as a result of the electron beam interaction with high-Z materials, such as scrapers and collimators [1]. When the energy of the incident electron beam is sufficiently high, it can produce high-energy photons, which subsequently interact with a nucleus, resulting in the emission of nucleons. This interaction is known as a photonuclear interaction. For photons with energies above the

251

APS Beamline Questionnaire Form | Advanced Photon Source  

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

APS Beamline Motor Drive Questionnaire Form APS Beamline Motor Drive Questionnaire Form * indicates required field Please send a separate email to Thomas Barkalow with an attached beamline drawing or sketch showing where the groups are located and the distances they are apart. First Name*: Middle Initial/Name: Last Name*: Beamline Designation*: What is the total number of driver units with makes and models?: How are driver units grouped together and each group's location within the beamline?: What number of driver units are in use simultaneously for each group?: What is the maximum amperage setting actually used for each unit?: What is the number of groups in use simultaneously and which groups are they?: Verification: We need to make sure you are a human. Please solve the challenge below, and click the I'm a Human button to get a confirmation code. To make this

252

APS - Solutions for Business Financing | Department of Energy  

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

APS - Solutions for Business Financing APS - Solutions for Business Financing APS - Solutions for Business Financing < Back Eligibility Commercial Industrial Institutional Retail Supplier Schools State Government Savings Category Heating & Cooling Commercial Heating & Cooling Cooling Home Weatherization Construction Commercial Weatherization Design & Remodeling Other Appliances & Electronics Commercial Lighting Lighting Manufacturing Program Info Funding Source APS State Arizona Program Type Utility Loan Program Rebate Amount Varies (project costs, less rebate amount) APS and National Bank of Arizona have partnered to offer low-interest financing to all customers qualifying for energy efficiency incentives under the Solutions for Business program. Combined with program rebates, financing can help cover the up-front costs of energy-saving improvements,

253

APS User News-at-a-Glance, Issue 15  

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5; June 14, 2002 5; June 14, 2002 Contents: 1. First APS/User Retreat: A Success! Dates Set for the Twelfth APS User Meeting Next Independent Investigator Proposals Due July 1, 2002 Research Highlight: "Edema Factor: Revealing the Structure of an Anthrax Toxin" Invitation to Submit Research Highlights Coming Events Operations Update 1. First APS/User Strategic Planning Meeting: A Success! (Contact: jmgibson@aps.anl.gov) An atmosphere of collegial interaction characterized the first APS/User Strategic Planning meeting as 115 APS staff members and users gathered to discuss the future. Plenary sessions focused on the APS mission and goals, the future of the Collaborative Access Team System, future innovations with third-generation sources, and operational funding for beamlines were

254

The APS and the 2012 Argonne Energy Showcase  

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

Argonne Acoustic Levitation Video Goes Viral Argonne Acoustic Levitation Video Goes Viral "Inside the Advanced Photon Source" Inside the latest Argonne Now APS Director Stephenson Named Argonne Distinguished Fellow Advanced Photon Source, Canadian Light Source Strengthen Ties, Expand X-ray Technology and Research Rose of APS and CNM One of Four DOE Early Career Award Winners APS News Archives: 2012 | 2011 | 2010 | 2009 2008 | 2007 | 2006 | 2005 2004 | 2003 | 2002 | 2001 2000 Subscribe to APS News rss feed The APS and the 2012 Argonne Energy Showcase OCTOBER 1, 2012 Bookmark and Share Francesco De Carlo (at right in blue t-shirt) delighted visitors to the APS Energy Showecase by demonstrating three-dimensional tomography used by researchers at the APS in the search for new, energy-efficient materials.

255

APS User Newse 2013 Year-End Index  

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3 3 2012 2011 2010 2009 2008 2007 2006 2005 2004 2003 2002 2001 2000 APS User News Year-End Index 2013 Issue 84 (08.28.13) DIRECTOR'S CORNER APS UPGRADE NEWS by George Srajer, APS Upgrade Director USER MATTERS -- Three-Way Meeting Hosted at APS -- Tech Tuesdays -- Get Your Geek On: NUFO Goes to Capitol Hill -- APS User Program: New Roles -- Nobel Laureate Keynote Address Kicks Off Record-breaking Users Meeting -- APS Science 2012 Research and Engineering Highlights--Get Yours Today! -- APS Data Management Practices -- Quiet Vehicle Hazards BRIEFLY NOTED -- 2013 Arthur H. Compton Award Recognizes "Top-Up" Operation Founders -- Art of Science Entries Sought! -- Next U.S. Particle Accelerator School -- Scientific American Blog Highlights the Need for Scientists to Do Own

256

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

257

APS Long Range Operations Schedule FY2009  

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09) 09) Alternate Formats: iCal | Excel | PDF APS Long Range Operation Schedule (FY2009) 2008-3 2009-1 2009-2 Sep Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep 1 1 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 2 2 2 3 3 3 3 3 3 3 3 3 3 3 3 4 4 4 4 4 4 4 4 4 4 4 4 5 5 5 5 5 5 5 5 5 5 5 5

258

APS Long Range Operations Schedule FY2010  

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

10) 10) Alternate Formats: iCal | Excel | PDF APS Long-Range Operation Schedule 2009-3 2010-1 2010-2 Sep Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep 1 1 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 2 2 2 3 3 3 3 3 3 3 3 3 3 3 3 4 4 4 4 4 4 4 4 4 4 4 4 5 5 5 5 5 5 5 5 5 5 5 5

259

Review of the APS SR RF systems.  

DOE Green Energy (OSTI)

The Advanced Photon Source (APS) is a 7-GeV full energy storage ring (SR) for generating synchrotron radiation with an injector. The storage ring cavities consist of four groups of four single cells powered by up to four 1-MW klystrons for up to 300-mA operation. A review of the operation of the rf system as well as rf-related beam dynamics is presented. This review includes rf power distribution, low-level feedback, control law, beam loading, beam instabilities, higher-order modes, and beam-induced multipactoring.

Song, J.J.; Cours, A.; Grelick, A.; Harkay, K.; Horan, D.; Kang, Y.W.; Kustom, R.L.; Nassiri, A.; Pile, G.; Smith, T.L.

1998-03-31T23:59:59.000Z

260

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

Note: This page contains sample records for the topic "aps linac coherent" 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

APS User News-at-a-Glance, Issue 9  

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

9; September 7, 2001 9; September 7, 2001 Contents: 1. Wayne Hendrickson Selected as the 2001 APS Compton Award Recipient Gopal Shenoy named as Interim Associate Laboratory Director for the APS Eleventh Users Meeting for the APS Set for October 9-11, 2001 User Survey 2001 to Close September 14 CCRP/PEB Meetings To Be Held in September and October DOE-BES Baseline Program Review Slated for October 16-18, 2001 Study Guide for User Orientation Now on the Web 8. Check Your User Badge 9. Contact Your Host CAT before Bringing Materials or Samples to the APS 10. Operations Update 1. Wayne Hendrickson Selected as the 2001 APS Compton Award Recipient (Contact: strasser@aps.anl.gov) Wayne A. Hendrickson of Columbia University has been selected to receive the 2001 Advanced Photon Source Arthur H.

262

Microsoft Word - 2007 Cross Cut - APS response.doc  

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

Cross Cut Review of Research in Structural Biology Cross Cut Review of Research in Structural Biology Advanced Photon Source January 24, 2007 Review Committee: J. R. Helliwell, University of Manchester, UK, APS SAC; Chair Howard Einspahr, Research Fellow, Bristol Myers Squibb (Retired), APS SAC Sine Larsen, European Synchrotron Radiation Facilities, External Reviewer Douglas Ohlendorf, University of Minnesota, External Reviewer Wei Yang, NIH, Bethesda, APS SAC Introduction: The reviewers met at the Advanced Photon Source (APS) on January 24, 2007, together with the APS Scientific Advisory Committee (SAC), which has a cross-disciplinary membership, to review structural biology science at the APS. The primary emphasis of the review was macromolecular crystallography (also known as protein crystallography

263

High Power Superconducting Continuous Wave Linacs for Protons and  

Office of Science (SC) Website

Power Superconducting Continuous Power Superconducting Continuous Wave Linacs for Protons and Heavy-Ions Nuclear Physics (NP) NP Home About Research Facilities Science Highlights Benefits of NP Spinoff Applications Spinoff Archives SBIR/STTR Applications of Nuclear Science and Technology Funding Opportunities Nuclear Science Advisory Committee (NSAC) News & Resources Contact Information Nuclear Physics U.S. Department of Energy SC-26/Germantown Building 1000 Independence Ave., SW Washington, DC 20585 P: (301) 903-3613 F: (301) 903-3833 E: sc.np@science.doe.gov More Information » Spinoff Archives High Power Superconducting Continuous Wave Linacs for Protons and Heavy-Ions Print Text Size: A A A RSS Feeds FeedbackShare Page Application/instrumentation: High Power Superconducting Continuous Wave Linacs for Protons and Heavy-Ions

264

DIAGNOSTIC TOOLS FOR BEAM HALO INVESTIGATION IN SNS LINAC  

Science Conference Proceedings (OSTI)

Uncontrolled beam loss is a major concern in the operation of a high intensity hadron linac. A low density cloud of particles with large oscillation amplitudes, so called halo, can form around the dense regular beam core. This halo can be a direct or indirect cause of beam loss. There is experimental evidence of halo growing in the SNS linac and limiting the further reduction of beam loss. A set of tools is being developed for detecting of the halo and investigating its origin and dynamics. The set includes high resolution emittance measurements in the injector, laser based emittance measurements at 1 GeV, and high resolution profile measurements along the linac. We will present our experience with useful measurement techniques and data analysis algorithms.

Aleksandrov, Alexander V [ORNL; Blokland, Willem [ORNL; Liu, Yun [ORNL; Long, Cary D [ORNL; Zhukov, Alexander P [ORNL

2012-01-01T23:59:59.000Z

265

Overview and status of RF systems for the SSC Linac  

SciTech Connect

The Superconducting Super Collider (SSC) Linear Accelerator (Linac) produces a 600-MeV, 35-{mu}s, H-beam at a 10-Hz repetition rate. The beam is accelerated by a series of RF cavities. These consist of a Radio Frequency Quadrupole (RFQ), two bunchers, and four Drift Tube Linac (DTL) tanks at 427.617 MHz, and two bunchers, nine side-coupled Linac modules, and an energy compressor at 1282.851 MHz. The RFQ amplifier and the low-frequency buncher cavity amplifiers use gridded tubes, while the other cavities use klystron amplifier systems. The RF control system consists of a reference line and cavity feedback and feedforward loops for each amplifier. The RF amplifier system for each of these accelerator cavities is described, and the current status of each system is presented.

Mynk, J.; Grippe, J.; Cutler, R.I.; Rodriguez, R.

1993-05-01T23:59:59.000Z

266

LINAC BEAM DYNAMICS SIMULATIONS WITH PY-ORBIT  

Science Conference Proceedings (OSTI)

Linac dynamics simulation capabilities of the PyORBIT code are discussed. PyORBIT is an open source code and a further development of the original ORBIT code that was created and used for design, studies, and commissioning of the SNS ring. The PyORBIT code, like the original one, has a two-layer structure. C++ is used to perform time-consuming computations, and the program flow is controlled from a Python language shell. The flexible structure makes it possible to use PyORBIT also for linac dynamics simulations. A benchmark of PyORBIT with Parmila and the XAL Online model is presented.

Shishlo, Andrei P [ORNL

2012-01-01T23:59:59.000Z

267

BEAM SIMULATIONS USING VIRTUAL DIAGNOSTICS FOR THE DRIVER LINAC  

Science Conference Proceedings (OSTI)

End-to-end beam simulations for the driver linac have shown that the design meets the necessary performance requirements including having adequate transverse and longitudinal acceptances. However, to achieve reliable operational performance, the development of appropriate beam diagnostic systems and control room procedures are crucial. With limited R&D funding, beam simulations provide a cost effective tool to evaluate candidate beam diagnostic systems and to provide a critical basis for developing early commissioning and later operational activities. We propose to perform beam dynamic studies and engineering analyses to define the requisite diagnostic systems of the driver linac and through simulation to develop and test commissioning and operational procedures.

R. C. York; X. Wu; Q. Zhao

2011-12-21T23:59:59.000Z

268

APS - GEOSmart Financing Program (Arizona) | Open Energy Information  

Open Energy Info (EERE)

(PV) systems and solar water heaters. Eventually, APS plans to provide financing for solar space heating and small wind systems as well. Note that other financing or lease...

269

APS Experiment Safety Approval System Instructions for Users  

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

form and Experiment Hazard Control Plan? Part VII: What If... APS Experiment Safety Approval System Instructions for Users version 2.0 January 21, 2005 Contacts...

270

APS User News-at-a-Glance, Issue 45  

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

5: November 30, 2007 5: November 30, 2007 Advanced Photon Source Argonne National Laboratory www.aps.anl.gov ============================================ CONTENTS MESSAGE FROM MURRAY --Extensive U of C Review Completed SCIENCE NEWS 1. HOLD THE DATE: Upgrade Workshop October 20-21, 2008 2. Featured Beamline: GISAXS at 8-ID-E, Focusing on Nanoscience USER MATTERS 3. Ten Tips for an Easy ESAF FACILITY NEWS 4. Update on XOR Beamline Upgrades 5. APS Response to Violations of APS and Argonne Policies by Users BRIEFLY NOTED -- FY2008 Schedule Posted -- Laboratory Closed for Holidays ---------------------------------------------------------------------------------------------- Instructions for subscribing, unsubscribing, and submitting info: http://www.aps.anl.gov/Users/Communications/User_News/

271

APS User News-at-a-Glance, Issue 31  

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APS and Archaeometallurgy: Studying the Alloys and Forming Techniques of the Medieval Brass Industry Peggy A. O'Day, It's Not As Easy As It Looks: Application of...

272

APS X-ray Optics Fabrication and Characterization Facility  

SciTech Connect

The APS is in the process of assembling an X-ray Optics Fabrication and characterization Facility. This report will describe its current (as of February 1993) design.

Davey, S.

1993-02-01T23:59:59.000Z

273

Advanced Power Sources Ltd APS | Open Energy Information  

Open Energy Info (EERE)

navigation, search Name Advanced Power Sources Ltd (APS) Place United Kingdom Product UK R&D company based at Loughborough University focusing on fuel cells. References Advanced...

274

APS User News-at-a-Glance, Issue 52  

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User Meeting 1. Compton Award Winners Announced 2. Naji Sami Husseini (University of Michigan) Selected for Student Invited Talk 3. Voting in Progress for New APS Users...

275

APS Radiation Safety Shielding Committee for Design Reviews  

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Minutes 2008 (restricted) 2007 (restricted) 2006 (restricted) 2005 (restricted) APS Radiation Safety Shielding Committee for Design Reviews (RSSCDR) (February 9, 2012) 1. Purpose...

276

APS User News-at-a-Glance 2005  

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

A U.S. Department of Energy, Office of Science, About Science Media Center User Information Education Facility Search APS ... Search Button Argonne Home > Argonne Home > Advanced...

277

APS User News-at-a-Glance, Issue 19  

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

Committee Completes First Meeting 4. Introducing X-ray Operations and Research: "The CAT Formerly Known as SRI" 5. BESSRC Operations Group Joins APS Staff 6. Twelfth User...

278

APS Beamline 6-ID-B,C  

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

B,C Home B,C Home Recent Publications Beamline Info Optics Instrumentation Software User Info Beamline 6-ID-B,C Beamline 6-ID-B,C is operated by the Magnetic Materials Group in the X-ray Science Division (XSD) of the Advanced Photon Source. Research on this beamline centers on general x-ray scattering studies of materials. The beamline has 2 end-stations: 6-ID-B: Psi -Diffractomter & In-Field Studies 6-ID-C: UHV in-situ growth Recent Research Highlights LSMO pictures Searching for Next-Generation Electronic Materials December 14, 2009 A new class of layered oxide materials discovered thanks to research at the beamline 6-ID-B offers scientists unprecedented opportunities for creating the next generation of electronic devices. Local Contact: Phil Ryan Local Contacts: Philip Ryan (Surface Diffraction) 630.252.0252 ryan@aps.anl.gov

279

APS Preliminary Beamline Design Report Guide  

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

PRELIMINARY BEAMLINE DESIGN REPORT PRELIMINARY BEAMLINE DESIGN REPORT December 5, 1994 5.1 Preliminary Beamline Design: General Guidelines The Preliminary Design of the beamline represents an approximately 30% design level of each of the beamline components. This level of design permits the CAT to develop cost estimates for the construction of the beamline, as well as a realistic timeline for completion of the construction tasks. A committee from the APS has been charged with reviewing the Preliminary Design Reports and has established the evaluation criteria described below. The Preliminary Beamline Report is expected to expand upon the Conceptual Design Report in the following areas: Beamline Layout Component Design Work Breakdown Structure Cost and Schedule Additional Operational Requirements

280

200711aps_ko_draft4.ai  

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

on MSE: Experiment on MSE: Experiment J. Ko, S. Scott a , W. Rowan b , R. Granetz, I. Hutchinson, H. Yuh c , Paul Bonoli, and Ron Parker Plasma Science and Fusion Center, Massachusetts Institute of Technology, Cambridge, MA, USA a Princeton Plasma Physics Laboratory, Princeton, NJ, USA b Fusion Research Center, University of Texas, Austin, TX, USA c Nova Photonics, Inc., NJ, USA 49th Annual Meeting of APS DPP November 12 - 16, 2007 Orlando, Florida Abstract It has been conjectured that the anomalous results obtained previously during beam-into-gas calibrations of the Motional Stark Effect (MSE) diagnostic on Alcator C-Mod are caused by the 'secondary' beam neutrals - the neutrals that ionize following collisions with the torus gas and then re-charge

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


281

APS User Safety Update (10 April 2006)  

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

Safety Update (12 April 2006) Safety Update (12 April 2006) Argonne is in the process of revitalizing its safety program. APS presently is reviewing user training to address recent changes in Argonne electrical safety requirements and to ensure an efficient manner of implementing those requirements. In addition, several recent occurrences involving users have demonstrated a need to improve communication of Argonne specific requirements. The purpose of this message is to provide interim guidance until final changes are implemented in a few months. New Electrical Safety Training Requirements Argonne recently released new requirements regarding training requirements to perform a variety of tasks involving electrical equipment: ESH377 Electrical Safety Awareness is required for all employees and users regardless of

282

APS Beamline 6-ID-D  

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

MM-Group Home MM-Group Home MMG Advisory Committees 6-ID-D Home Recent Publications Beamline Info Optics Instrumentation Software User Info Beamline 6-ID-D Beamline 6-ID-D is operated by the Magnetic Materials Group in the X-ray Science Division (XSD) of the Advanced Photon Source. This is a high energy (50 - 130 keV) beamline used for structural studies primarily on single crystal materials. Recent Research Highlights LuFeO Unlikely route to ferroelectricity May 16, 2012 A new type of ferroelectric, LuO2Fe4, has been investigated at the APS by a research team from Julich research center. XAS & XMCD studies on beamline 4-ID-C determined the Fe magnetism and valence, while single crystal x-ray scattering measurements at 6-ID-B & 6-ID-D probed the associated structural and charge ordering.

283

Microsoft PowerPoint - APS_07  

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

Barriers in Barriers in Alcator C-Mod Catherine Fiore MIT Plasma Science and Fusion Center APS-DPP November 14, 2007 Orlando, Fl With Contributions from: W. L. Rowan † , A. Dominguez, A. E. Hubbard , A. Ince-Cushman, M. J. Greenwald, L. Lin, E.S. Marmar , M. Reinke, J. E. Rice, K. Zhurovich £ , MIT- PSFC, † FRC-UTA, £ Goldman Sachs Supported by US DoE C-Mod Alcator What's New: * Gyrokinetic stability study at ITB onset * Improved ion temperature profile measurements * Localization of fluctuation measurements * Ohmic H-mode ITBs Introduction: ITBs in Alcator C-Mod Internal Transport Barriers (ITBs) in C-Mod arise from steady H-mode plasmas lasting 2 or more energy confinement times when the central power input is low: they are seen in both Ohmic and Off-axis heated ICRF plasmas

284

APS News 2007 | Advanced Photon Source  

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

Albert Macrander named American Physical Society Fellow Albert Macrander named American Physical Society Fellow Albert Macrander named American Physical Society Fellow December 10, 2007 Albert Macrander of the Argonne X-ray Science Division (XSD) has been elected a Fellow of the American Physical Society. Michael Borland named American Physical Society Fellow Michael Borland named American Physical Society Fellow December 4, 2007 Michael Borland of the Argonne Accelerator Systems Division has been elected a Fellow of the American Physical Society. Grad student is officially a GEMS Grad student is officially a GEMS October 18, 2007 Tao Sun (Northwestern University), who is currently doing his thesis research at the APS, has been awarded one of three Graduate Excellence in Materials Science Diamond awards by the Basic Science

285

2004 Users Meeting for the APS  

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

May 3-6, 2004 May 3-6, 2004 Argonne National Laboratory Argonne, Illinois DATES TO REMEMBER March 15 Franklin Award deadline April 1 Registration deadline for non-U.S. citizens April 5 Abstract deadline April 19 Housing deadline Registration deadline . Technical Program Schedule-at-a-Glance Comprehensive Program Workshops Banquet Exhibitors/Sponsors Participation Call for Poster Abstracts APSUO Steering Committee Elections VOTE NOW Rosalind Franklin Young Investigator Award Practical Matters Registration Form General Information Travel and Housing Arrangements CNM Meeting Meeting Information APS Users Organization Steering Committee Stephen Durbin, Chairman Mark Rivers, Vice-Chairman Malcolm Capel Lin Chen David Cookson Julie Cross Stephan Ginell Gene Ice Lisa Keefe John Rose Sunil Sinha Carol Thompson

286

APS 7-BM Beamline: 7-BM Home  

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

Overview of the 7-BM beamline Overview of the 7-BM beamline The 7-BM beamline is dedicated to time-resolved measurements of complex fluid flowfields using x-ray radiography and fluorescence spectroscopy. Funding for the final commissioning of 7-BM was provided by the DOE Office of Energy Efficiency and Renewable Energy. Commissioning was completed at the end of FY2012. The beamline is currently operated by the X-Ray Science Division of the APS. Major Areas of Research Fuel sprays from automotive fuel injectors, both diesel and gasoline. See more on the X-Ray Fuel Spray web page from Argonne's Energy Systems Division. Sprays for air-breathing propulsion. Fuel injection for rocket injectors. Gas-phase fuel injection and mixing. Beamline Performance Total flux: 4 x 1011 ph/s at 8 keV Energy range: 5.5 - 11 keV, 1.4% ΔE/E

287

ANL/APS/TB-14 APS Beamline Design and Construction Requirements:  

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

14 14 APS Beamline Design and Construction Requirements: A Reference Manual for Designers and Builders Version 1.0 May 1994 iii TABLE OF CONTENTS SECTION I DEFINITIONS, GUIDELINES, AND REVIEW CRITERIA ............................1 1. Introduction (July 21, 1998) ...............................................................................................1 1.1 About the Advanced Photon Source ...........................................................................1 1.2 About this Manual.......................................................................................................1 2. Beamline Definitions and Responsibilities (July 21, 1998) .................................................2 2.1 Definitions...................................................................................................................2

288

ANL/APS/TB-24 Diamond Monochromators for APS Undulator-A Beamlines  

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

4 4 Diamond Monochromators for APS Undulator-A Beamlines R.C. Blasdell, L. A. Assoufid, and D. M. Mills TABLE OF CONTENTS 1. INTRODUCTION .................................................................................1 2. PHYSICAL PROPERTIES OF DIAMONDS ..................................................5 2.1 Varieties of Diamonds ....................................................................5 2.2 The Lattice Parameter .....................................................................5 2.3 Bulk Thermal and Mechanical Properties ...............................................6 2.4 Typical Surface and Lattice Plane Morphology ......................................8 2.5 The Liquid-GaIn/Diamond Interface ...................................................10 3. DIFFRACTION PROPERTIES OF DIAMOND

289

Much Ado about Microbunching: Coherent Bunching in High Brightness Electron Beams  

Science Conference Proceedings (OSTI)

The push to provide ever brighter coherent radiation sources has led to the creation of correspondingly bright electron beams. With billions of electrons packed into normalized emittances (phase space) below one micron, collective effects may dominate both the preservation and use of such ultra-bright beams. An important class of collective effects is due to density modulations within the bunch, or microbunching. Microbunching may be deleterious, as in the case of the Microbunching Instability (MBI), or it may drive radiation sources of unprecedented intensity, as in the case of Free Electron Lasers (FELs). In this work we begin by describing models of microbunching due to inherent beam shot noise, which sparks both the MBI as well as SLAC's Linac Coherent Light Source, the world's first hard X-ray laser. We first use this model to propose a mechanism for reducing the inherent beam shot noise as well as for predicting MBI effects. We then describe experimental measurements of the resulting microbunching at LCLS, including optical radiation from the MBI, as well as the first gain length and harmonic measurements from a hard X-ray FEL. In the final chapters, we describe schemes that use external laser modulations to microbunch light sources of the future. In these sections we describe coherent light source schemes for both both linacs and storage rings.

Ratner, Daniel; /Stanford U. /SLAC

2012-05-25T23:59:59.000Z

290

Critical design issues of high intensity proton linacs  

SciTech Connect

Medium-energy proton linear accelerators are being studied as drivers for spallation applications requiring large amounts of beam powder. Important design factors for such high-intensity linacs are reviewed, and issues and concerns specific to this unprecedented power regime are discussed.

Lawrence, G.P.

1994-08-01T23:59:59.000Z

291

Status of Hybrid Target R&D at KEK LINAC  

E-Print Network (OSTI)

A hybrid positron source, consisting of a crystal as electron to photon converter and a amorphous target, is a candidate to relax heat load problem for high intensity positron sources. In this article we report status of experimental study using the 8 GeV electron beam at KEKB LINAC.

Tohru Takahashi

2012-02-27T23:59:59.000Z

292

Beam Loss Studies for Rare Isotope Driver Linacs Final Report  

Science Conference Proceedings (OSTI)

The Fortran 90 RIAPMTQ/IMPACT code package is a pair of linked beam-dynamics simulation codes that have been developed for end-to-end computer simulations of multiple-charge-state heavy-ion linacs for future exotic-beam facilities. These codes have multiple charge-state capability, and include space-charge forces. The simulations can extend from the low-energy beam-transport line after an ECR ion source to the end of the linac. The work has been performed by a collaboration including LANL, LBNL, ANL, and MSU. The code RIAPMTQ simulates the linac front-end beam dynamics including the LEBT, RFQ, and MEBT. The code IMPACT simulates the beam dynamics of the main superconducting linac. The codes have been benchmarked for rms beam properties against previously existing codes at ANL and MSU. The codes allow high-statistics runs on parallel supercomputing platforms, particularly at NERSC at LBNL, for studies of beam losses. The codes also run on desktop PC computers for low-statistics work. The code package is described in more detail in a recent publication [1] in the Proceedings of PAC07 (2007 US Particle Accelerator Conference). In this report we describe the main activities for the FY07 beam-loss studies project using this code package.

Wangler, T P; Kurennoy, S S; Billen, J H; Crandall, K R; Qiang, J; Ryne, R D; Mustapha, B; Ostroumov, P; Zhao, Q; York, and R. C.

2008-03-26T23:59:59.000Z

293

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

294

ANL/APS/TB-34 Experimental Facilities Division  

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

4 4 Experimental Facilities Division Progress Report 1997-98 September 1998 iii Table of Contents Acronyms...................................................................................................................................... vii 1 INTRODUCTION 1.1 Background .................................................................................................................1 1.2 Mission of the APS Experimental Facilities Division ................................................2 1.3 APS User Sector Layout .............................................................................................2 1.4 XFD Organization.......................................................................................................3 1.5 User Operations

295

APS/DPP 111207-se 1 University Fusion Association Meeting  

E-Print Network (OSTI)

greater interaction between the Office of Science researchers and the NNSA scientists and provide greater has been included in the NNSA program. #12;APS/DPP 111207-se 6 FY2008 CR · The Department is operating Interest May 2007 SC/NNSA Joint Program in HEDLP #12;APS/DPP 111207-se 12 HEDP-Research Topics & Related

296

Secretary Chu Statement on AP1000 Reactor Design Certification | Department  

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

Secretary Chu Statement on AP1000 Reactor Design Certification Secretary Chu Statement on AP1000 Reactor Design Certification Secretary Chu Statement on AP1000 Reactor Design Certification December 22, 2011 - 3:25pm Addthis Washington, D.C. - U.S. Energy Secretary Steven Chu issued the following statement today in support of the Nuclear Regulatory Commission's (NRC) decision to certify Westinghouse Electric's AP1000 nuclear reactor design, a significant step towards constructing a new generation of U.S. nuclear reactors. In February 2010, the Obama Administration announced the offer of a conditional commitment for a $8.33 billion loan guarantee for the construction and operation of two AP1000 reactors at Alvin W. Vogtle Electric Generation Plant in Burke, Georgia. "The Administration and the Energy Department are committed to restarting

297

APS team works smarter, cuts substation construction costs by 36%  

SciTech Connect

An aggressive, cost-cutting, team of T D employees at Arizona Public Service Co (APS) is building a new distribution substation in Phoenix for less than half the original cost that APS planners had calculated for the project's land, labor and materials. Scheduled for service in June of this year, APS analysts had originally projected land, labor and materials costs for the 20-MVA Bell substation at nearly $1.7-million-not including major equipment such as transformers, circuit breakers, and switches. However, after studying the project, an empowered APS crew was able to slash 36% off the original estimate-more than $610,000. What's more, APS spokesmen say that its new approach to substation construction and design has given its engineers and construction crews a laundry list of additional ideas to try out on future substation ventures. 4 figs., 1 tab.

Not Available

1993-05-01T23:59:59.000Z

298

Short Pulse X-rays at the APS  

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

Short Pulse X-rays at the APS Workshop Summary Friday, May 9, 2008 Building 401, Room A5000 Organizers: Jin Wang (Argonne National Laboratory), Lin Chen (Argonne National Laboratory), David Reis ( University of Michigan ), Paul Evans ( University of Wisconsin ), Ali Nassiri (Argonne National Laboratory), and Linda Young ( Argonne National Laboratory) Agenda Registration - complete the visitor registration form. For "purpose of visit," please enter "APS SPX Workshop" https://www.aps.anl.gov/About/Visiting/visitor_registration.php On-site lodging is at the Argonne Guest House http://www.anlgh.org/ Travel to Argonne National Laboratory http://www.aps.anl.gov/About/Visiting/Directions/ Fees There is no charge for this workshop. Since the 2004 Lake Geneva Workshop, the APS has performed three years of

299

Moffat Appointed Senior Advisor for Life Sciences at the APS  

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

Gluskin of ASD Elected to AAAS Fellowship Gluskin of ASD Elected to AAAS Fellowship Jacobsen of XSD Elected to American Physical Society Fellowship Chapman of XSD Wins Oxford Cryosystems Poster Prize Office of Science Approves Critical Decision 1 for APS Upgrade Project Argonne Breaks Ground on $34.5M MX Research Facility APS News Archives: 2012 | 2011 | 2010 | 2009 2008 | 2007 | 2006 | 2005 2004 | 2003 | 2002 | 2001 2000 Subscribe to APS News rss feed Moffat Appointed Senior Advisor for Life Sciences at the APS NOVEMBER 30, 2011 Bookmark and Share Keith Moffat The Advanced Photon Source (APS) is the Western Hemisphere's most powerful source of x-rays for research. It attracts more than 4,000 users from academia, industry, and government laboratories around the world each year for research in all fields of science. In particular, almost half of

300

Coherent Inc | Open Energy Information  

Open Energy Info (EERE)

Coherent Inc Jump to: navigation, search Name Coherent Inc Place Santa Clara, California Zip 95054 Sector Solar Product US-based manufacturer of photonics-based equipments such as...

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


301

Coherent Radiation in an Undulator  

E-Print Network (OSTI)

solving the particle-radiation system in a self-consistentto clarify the coherent radiation mechanism. References 1.the Proceedings Coherent Radiation in an Undulator Y,H. Chin

Chin, Y.H.

2011-01-01T23:59:59.000Z

302

Constrainted Coherent States  

E-Print Network (OSTI)

Coherent states possess a regularized path integral and gives a natural relation between classical variables and quantum operators. Recent work by Klauder and Whiting has included extended variables, that can be thought of as gauge fields, into this formalism. In this paper, I consider the next step, and look at the roll of first class constraints.

M. C. Ashworth

1996-04-21T23:59:59.000Z

303

Thermal Decomposition Characteristics of Orthorhombic Ammonium Perchlorate (o-AP) and an 0-AP/HTPB-Based Propellant  

DOE Green Energy (OSTI)

A study to characterize the low-temperature reactive processes for o-AP and an AP/HTPB-based propellant (class 1.3) is being conducted in the laboratory using the techniques of simultaneous thermogravimetric modulated beam mass spectrometry (STMBMS) and scanning electron microscopy (SEM). The results presented in this paper are a follow up of the previous work that showed the overall decomposition to be complex and controlled by both physical and chemical processes. The decomposition is characterized by the occurrence of one major event that consumes up to {approx}35% of the AP, depending upon particle size, and leaves behind a porous agglomerate of AP. The major gaseous products released during this event include H{sub 2}O, O{sub 2}, Cl{sub 2}, N{sub 2}O and HCl. The recent efforts provide further insight into the decomposition processes for o-AP. The temporal behaviors of the gas formation rates (GFRs) for the products indicate that the major decomposition event consists of three chemical channels. The first and third channels are affected by the pressure in the reaction cell and occur at the surface or in the gas phase above the surface of the AP particles. The second channel is not affected by pressure and accounts for the solid-phase reactions characteristic of o-AP. The third channel involves the interactions of the decomposition products with the surface of the AP. SEM images of partially decomposed o-AP provide insight to how the morphology changes as the decomposition progresses. A conceptual model has been developed, based upon the STMBMS and SEM results, that provides a basic description of the processes. The thermal decomposition characteristics of the propellant are evaluated from the identities of the products and the temporal behaviors of their GFRs. First, the volatile components in the propellant evolve from the propellant as it is heated. Second, the hot AP (and HClO{sub 4}) at the AP-binder interface oxidize the binder through reactions that preferentially strip the hydrogen from the binder and yield HCl and H{sub 2}O with some oxidation of the carbon from the binder. Third, the o-AP in the propellant decomposes in the same manner as in neat o-AP. Finally, AP-derived gaseous products interact with other ingredients in the propellant.

BEHRENS JR.,RICHARD; MINIER,LEANNA M.G.

1999-10-25T23:59:59.000Z

304

Coherent Radiation in Insertion Devices  

E-Print Network (OSTI)

We calculate the coherent radiation in an undulator/wiggler with a vacuum chamber of arbitrary cross section. The backward radiation is a coherent and it has wavelengths about twice the period of the undulator/wiggler. Mostly of coherent radiation is going with the wavelengths approximately the bunch length at small angles however.

Mikhailichenko, A A

2011-01-01T23:59:59.000Z

305

SRF photoinjector for proof-of-principle experiment of coherent electron cooling at RHIC  

SciTech Connect

Coherent Electron Cooling (CEC) based on Free Electron Laser (FEL) amplifier promises to be a very good way to cool protons and ions at high energies. A proof of principle experiment to demonstrate cooling at 40 GeV/u is under construction at BNL. One of possible sources to provide sufficient quality electron beam for this experiment is a SRF photoinjector. In this paper we discuss design and simulated performance of the photoinjector based on existing 112 MHz SRF gun and newly designed single-cavity SRF linac operating at 704 MHz.

Kayran D.; Belomestnykh, S.; Ben-Zvi, I.; Brutus, J.C.; et al

2012-05-20T23:59:59.000Z

306

A new gap separation mechanism for APS insertion devices.  

SciTech Connect

A new gap separation mechanism for use with the standard Advanced Photon Source (APS) 3.3-cm-period undulator magnetic structures has been designed and built and the first system has been installed in the APS storage ring. The system allows a minimum magnetic gap of 10 mm for use with the APS 8-mm insertion device vacuum chambers. The mechanism is a bolted steel frame structure with a simple 4-motor mechanical drive train. The control system uses servomotors with incremental rotary encoders and virtual absolute linear encoders.

Trakhtenberg, E. M.; Tcheskidov, V.; Den Hartog, P. K.; Deriy, B.; Erdmann, M.; Makarov, O.; Moog, E. R.

1999-10-25T23:59:59.000Z

307

APS User News-at-a-Glance 2009 Year-End Index  

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

Overview Visiting the APS Mission & Goals Find People Organization Charts Committees Job Openings User Information Prospective Users New Users Current Users APS User Portal...

308

201 AP880304-0164 -1 NASA owes the National Research ...  

Science Conference Proceedings (OSTI)

... 205 AP890919-0002 -1 Weather officials in the Bahamas feared Hugo ... AP890628-0216 - Human Exploration of the Solar System in the ...

309

H- AND PROTON BEAM LOSS COMPARISON AT SNS SUPERCONDUCTING LINAC  

Science Conference Proceedings (OSTI)

A comparison of beam loss in the superconducting part (SCL) of the Spallation Neutron Source (SNS) linac for H- and protons is presented. During the experiment the nominal beam of negative hydrogen ions in the SCL was replaced by a proton beam created by insertion of a thin stripping carbon foil placed in the low energy section of the linac. The observed significant reduction in the beam loss for protons is explained by a domination of the intra beam stripping mechanism of the beam loss for H-. The details of the experiment are discussed, and a preliminary estimation of the cross section of the reaction H- + H- -> H- + H0 + e is presented. Earlier, a short description of these studies was presented in [1].

Aleksandrov, Alexander V [ORNL; Galambos, John D [ORNL; Plum, Michael A [ORNL; Shishlo, Andrei P [ORNL

2012-01-01T23:59:59.000Z

310

BEAM POSITION AND PHASE MONITORS FOR THE LANSCE LINAC  

SciTech Connect

New beam-position and phase monitors are under development for the linac at the Los Alamos Neutron Science Center (LANSCE). Transducers have been designed and are being fabricated. We are considering many options for the electronic instrumentation to process the signals and provide position and phase data with the necessary precision and flexibility to serve the various required functions. We'll present the various options under consideration for instrumentation along with the advantages and shortcomings of these options.

McCrady, Rodney C. [Los Alamos National Laboratory; Gilpatrick, John D. [Los Alamos National Laboratory; Power, John F. [AOT-IC

2011-01-01T23:59:59.000Z

311

HIGH DYNAMIC-RANGE HIGH SPEED LINAC CURRENT MEASUREMENTS  

SciTech Connect

It is desired to measure the linac current of a charged particle beam with a consistent accuracy over a dynamic range of over 120 dB. Conventional current transformers suffer from droop, can be susceptible to electromagnetic interference (EMI), and can be bandwidth limited. A novel detector and electronics were designed to maximize dynamic range of about 120 dB and measure rise-times on the order of 10 nanoseconds.

Deibele, Craig Edmond [ORNL; Curry, Douglas E [ORNL; Dickson, Richard W [ORNL

2012-01-01T23:59:59.000Z

312

BEAM POSITION AND PHASE MONITORS FOR THE LANSCE LINAC  

Science Conference Proceedings (OSTI)

New beam-position and phase monitors are under development for the linac at the Los Alamos Neutron Science Center (LANSCE.) Transducers have been designed and are being installed. We are considering many options for the electronic instrumentation to process the signals and provide position and phase data with the necessary precision and flexibility to serve the various required functions. We'll present the various options under consideration for instrumentation along with the advantages and shortcomings of these options.

McCrady, Rodney C. [Los Alamos National Laboratory; Gilpatrick, John D. [Los Alamos National Laboratory; Watkins, Heath A. [Los Alamos National Laboratory

2012-04-11T23:59:59.000Z

313

APS - Residential Energy Efficient Rebate Program | Department of Energy  

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

APS - Residential Energy Efficient Rebate Program APS - Residential Energy Efficient Rebate Program APS - Residential Energy Efficient Rebate Program < Back Eligibility Residential Savings Category Home Weatherization Commercial Weatherization Heating & Cooling Commercial Heating & Cooling Cooling Sealing Your Home Ventilation Heat Pumps Appliances & Electronics Windows, Doors, & Skylights Maximum Rebate Duct Repairs: $250 Sealing Air Leaks: $250 Attic Insulation: $250 Pool Pumps: $200 Program Info State Arizona Program Type Utility Rebate Program Rebate Amount Heat Pumps/AC Units: $270 Insulation, Duct Repair and Air Sealing: 75% of cost Refrigerator Recycling: $30 Lighting: Store Discounts APS offers a $270 rebate to its residential customers who upgrade their AC units or heat pumps. AC units must meet both the SEER and EER values and be

314

APS User News-at-a-Glance, Issue 6  

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

6; March 22, 2001 6; March 22, 2001 Contents: 1. Moncton to Lead Argonne's Fourth-Generation Sources Initiative April Shutdown Activities Web-based Graphics Gallery: Resource for Users New User Support Facility Opens One Month Left to Submit User Activity Reports 1. Moncton to Lead Argonne's Fourth-Generation Sources Initiative (Contact: rt@aps.anl.gov) In a memo last Friday to APS employees and the user community, David Moncton announced that he has accepted a position at Argonne National Laboratory as Senior Scientist and Advisor to the Laboratory Director. In this position, he will lead Argonne's Fourth-Generation Source initiative, advise the Laboratory Director on APS issues, and resume his x-ray research career. Consequently, he will be stepping aside as Associate Laboratory Director for the APS on May 1, 2001,

315

APS User Newse 2010 Year-End Index  

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

0 0 2009 2008 2007 2006 2005 2004 2003 2002 2001 2000 APS User News Year-End Index 2010 Issue 60 (02.19.10) 1. February 22nd Deadline for Nominations for the 2010 APSUO Rosalind Franklin Award 2. APS Proposal Deadline is March 5, 2010, for the 2010-2 Run Cycle 3. APSUO Steering Committee Seeking Potential Nominees 4. Dates to Remember Issue 61 (03.10.10) 1. February 22nd Deadline for Nominations for the 2010 APSUO Rosalind Franklin Award 2. APS Proposal Deadline is March 5, 2010, for the 2010-2 Run Cycle 3. APSUO Steering Committee Seeking Potential Nominees Issue 62 (03.10.10) MESSAGE FROM MURRAY SCIENCE NEWS 1. Jaramillo Recognized for Techniques to Study Quantum Effects at High Pressure 2. Science Highlights USER MATTERS 3. APS Upgrade Seminar Series Scheduled for Summer Months

316

APS User News-at-a-Glance, Issue 44  

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

Beamline We are glad to announce that the National Science Foundation has approved the funding of a new insertion device beamline at the APS for intermediate energy x-ray...

317

CDM Accreditation Panel CDM AP | Open Energy Information  

Open Energy Info (EERE)

CDM Accreditation Panel CDM AP CDM Accreditation Panel CDM AP Jump to: navigation, search Name CDM Accreditation Panel (CDM-AP) Place Bonn, Germany Zip 53153 Product The CDM accreditation panel (CDM-AP) prepares the decision making of the Executive Board in accordance with the procedure for accrediting operational entities. Coordinates 50.7323°, 7.101695° 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":50.7323,"lon":7.101695,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

318

Artifacts of Life to be Studied at the APS  

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

Jeffrey T. Miller Wins Award for Excellence in Catalysis Jeffrey T. Miller Wins Award for Excellence in Catalysis van Veenendaal of X-ray Science Division wins 2009 NIU Presidential Research Professorship 2009 APSUO Compton Award to Grübel, Mochrie, and Sutton New Era of Research Begins as World's First Hard X-ray Laser Achieves "First Light" Unique Uranium Source in Naturally Bioreduced Sediment APS News Archives: 2012 | 2011 | 2010 | 2009 2008 | 2007 | 2006 | 2005 2004 | 2003 | 2002 | 2001 2000 Subscribe to APS News rss feed Artifacts of Life to be Studied at the APS JUNE 24, 2009 Bookmark and Share These "duck-billed" axe heads from the late Bronze Age (1500-1200 B.C.), found in the Levant, are among the items that will be studied at the APS. University of Southern California (USC) researchers traveling to the U.S.

319

APS User News-at-a-Glance, Issue 33  

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

3: August 25, 2005 3: August 25, 2005 Advanced Photon Source www.aps.anl.gov ============================================ CONTENTS SCIENCE NEWS 1. Recent Highlights ---Characterizing Complete Metal-Cluster Proteins ---"Cookbook Recipes" Would Cure Disease with Nontoxic DNA Delivery Systems ---Other Science Headlines 2. September Workshops Probe New Directions in Catalysis, Surface/Interface Science 3. Three APS Employees Win R&D 100 Award for Nanoprobe Lens 4. Magazine Ranks Illinois Highest for Biotechnology 5. Getting Noticed: Your Press Releases Can Help the APS Too 6. APS Science 2004 and Strategic Plan Report Now Available FACILITY NEWS 7. Work Beginning on Initial XOR Beamline Upgrades 8. GM/CA-CAT Dedicates Dual-Undulator Beamlines at Sector 23 9. Partner User Council Adopts New Charter and Elects Chair

320

APS Biomass I Biomass Facility | Open Energy Information  

Open Energy Info (EERE)

APS Biomass I Biomass Facility APS Biomass I Biomass Facility Jump to: navigation, search Name APS Biomass I Biomass Facility Facility APS Biomass I Sector Biomass Location Arizona Coordinates 34.0489281°, -111.0937311° 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":34.0489281,"lon":-111.0937311,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

Note: This page contains sample records for the topic "aps linac coherent" 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

APS User News-at-a-Glance, Issue 47  

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

training web site. The link is available several places on the APS web site: under the green button "WORK: Resources for Users" on the home page; on the Safety and Training...

322

APS User News-at-a-Glance, Issue 10  

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

oversaw Argonne's early efforts in nanoscience and fostered the development of the Nano-CAT proposal, which was approved by the APS Program Evaluation Board in the spring of 2001...

323

A Record Run for the APS X-ray Source  

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

light source facilities such as the U.S. Department of Energy Office of Science's Advanced Photon Source (APS) at Argonne National Laboratory to carry out world-class...

324

AP-XPS Measures MIEC Oxides in Action  

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

AP-XPS Measures MIEC Oxides in AP-XPS Measures MIEC Oxides in Action AP-XPS Measures MIEC Oxides in Action Print Wednesday, 25 May 2011 00:00 Oxide materials with mixed ionic-electronic conductivity (MIEC) can conduct both electrons and oxygen ions. MIEC oxides have broad applications, including use in solid-oxide fuel cells, high-temperature electrolysis for synthetic fuel production, and oxygen-separating membranes for chemical processes or NOx-free combustion; however, their surface activity under reaction conditions has been difficult, if not impossible, to ascertain, until recently. A team from the University of Maryland and Sandia National Laboratories joined ALS scientists on Beamlines 9.3.2 and 11.0.2 to overcome the vacuum limitations of conventional XPS instruments using ambient-pressure x-ray photoelectron spectroscopy (AP-XPS), providing the first in situ measurements of local surface oxidation states and electric potential in active MIEC electrodes.

325

APS User News-at-a-Glance, Issue 35  

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

5: November 22, 2005 5: November 22, 2005 Advanced Photon Source www.aps.anl.gov ============================================ CONTENTS 1. Message from Murray SCIENCE NEWS 2. Date Correction: Cross Cut Review on January 25 3. Science Highlight: "Demixing" of Metallic Liquids Seen for First Time 4. SRI-2005 Detector Workshop Moved to APS FACILITY NEWS 5. Shop and Machine Tool Users: Reauthorization Required by February 1, 2006 6. Pete Jemian Heads Beamline Controls and Data Acquisition Group 7. Nominations Packages Due Feb. 15 for 2006 APSUO Franklin Award 8. Reviews Scheduled for 10 Sectors 9. New Information Products from the APS 10. CV Check: Any New APS Papers? BRIEFLY NOTED ---Holiday Shutdowns Affect Services ---SPIE Scholarships and Career Guidance DATES AND DEADLINES

326

APS Guideline for CAT/XOR Sector Orientation  

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

CAT/XSD Sector Orientation CAT/XSD Sector Orientation October 1, 1999 (Updated October 11, 2004) Introduction The orientation described in this guideline is designed to provide the basic information needed by new users to make safe and effective use of CAT/XSD’s facilities at the APS. The CAT/XSD will also give appropriate parts of this orientation to visitors who are not expected to do hands-on work in CAT/XSD's facilities. Contents of the Orientation Part 1: APS Requirements CAT/XSD will ensure that prospective visitors are aware that they must: Register with the APS User Office and receive an appropriate safety orientation upon arrival and Never enter a controlled area unescorted. CAT/XSD will inform prospective users that they must: Contact the APS User Office prior to arrival for guidance on

327

Experimental studies of multipass beam breakup and energy recovery using the CEBAF injector linac.  

E-Print Network (OSTI)

??Beam breakup (BBU) instabilities in superconducting linacs are a significant issue due to the potentially high Q of the cavity higher-order modes (HOMs). The CEBAF (more)

Sereno, Nicholas S. R.

1994-01-01T23:59:59.000Z

328

Energy Recovery Linac cavity at BNL | U.S. DOE Office of Science...  

Office of Science (SC) Website

Energy Recovery Linac cavity at BNL Nuclear Physics (NP) NP Home About Research Facilities Science Highlights Benefits of NP Spinoff Applications Spinoff Archives SBIRSTTR...

329

High Current Energy Recovery Linac at BNL | U.S. DOE Office of...  

Office of Science (SC) Website

High Current Energy Recovery Linac at BNL Nuclear Physics (NP) NP Home About Research Facilities Science Highlights Benefits of NP Spinoff Applications Spinoff Archives SBIRSTTR...

330

http://www.aps.anl.gov/aps/news/20030605b.html  

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

Research Fuels Engineering Interest Research Fuels Engineering Interest Award-winning research on the characteristics of fuel sprays from injectors is one of the featured articles in the May 2003 issue of Mechanical Engineering and on the Web site of that magazine. The studies, carried out at APS's X-ray Operation and Research beamline 1-BM and the Cornell High Energy Synchrotron Source, revealed startling new information about fuel sprays, including the presence of a shockwave as the spray leaves the injector nozzle. Entitled "Penetrating Vision," the article in Mechanical Engineering, by associate editor John DeGaspari, notes that "an investigative technique using x-rays is causing engine designers to sit up and take notice." In the article, Scott Parrish, General Motors R&D senior research engineer, notes that "Many applications that

331

ANL/APS/TB-5 Functional Description of APS Beamline Front Ends  

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

Functional Description of APS Beamline Front Ends by Tuncer Kuzay February 1993 Advanced Photon Source & Argonne National Laboratory, Argonne, Illinois 60439 o operated by The University of Chicago for the United States Department of Energy under Contract W-31-1 09-Eng-38 Argonne National Laboratory, with facilties in the states of Ilinois and Idaho, is owned by the United States government, and operated by The University of Chicago under the provisions of a contract with the Deparment of Energy. DISCLAIMER This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, makes any waranty, express or implied, or assumes any legal liability or responsibility for the accuracy,

332

APS User News-at-a-Glance, Issue 27  

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

8: October 18, 2004 8: October 18, 2004 1. Message from Murray 2. Cross-cut Review to Feature Science Requiring the Pulsed Structure of the Beam 3. New 13T Superconducting Magnet Tested at Sector 4 4. David Mao of HP-CAT Awarded Prize by Royal Swedish Academy of Sciences 5. General User Update: New Beamlines Added, Original Program Proposals Expiring 6. APS Gauging User Interest in Single-Crystal Diamond for Monochromators 7. Suggestions Please: Workshop Ideas Invited for Users Meeting 8: Briefly Noted Grill opens for lunch Partner User deadline is Oct. 29 Jeff Catalano wins Argonne fellowship Library offers electronic access to more journals 9. Administrative Dates and Deadlines 1. Message from Murray (Contact: Murray Gibson, jmgibson@aps.anl.gov) I want to thank the many users who were involved in the strategic planning meeting and scientific workshops which concluded in early September at Fontana, Wisconsin. Many attendees shared my impression that this process was an outstanding success. Altogether there were 320 attendees at the 9 workshops, and 160 attendees at the final 2-day strategic planning meeting. The nine workshops have provided the input we need to flesh out our scientific strategic plan for the APS for the next 5-10 years. The plan will focus on compelling opportunities to build new user communities and new instrumentation to increase the scientific impact of the APS. It is the flesh which substantiates Phases I and II of our 20-year plan, which was released last year (http://www.aps.anl.gov/aps/downloads/20030223-roadmap.pdf). The scientific strategic plan will be discussed by the APS Scientific Advisory Committee at its January 2005 meeting and will be made available for user comment before it is finalized.

333

Construction, Commissioning and Operational Experience of the Advanced Photon Source (APS) Linear Accelerator  

E-Print Network (OSTI)

Construction, Commissioning and Operational Experience of the Advanced Photon Source (APS) Linear Accelerator

White, M; Berg, W; Cours, A; Fuja, R; Grelick, A E; Ko, K; Qian, Y L; Russell, T; Sereno, N S; Wesolowski, W

1996-01-01T23:59:59.000Z

334

FIRST EXPERIMENTS WITH THE RF GUN BASED INJECTOR FOR THE TESLA TEST FACILITY LINAC  

E-Print Network (OSTI)

FIRST EXPERIMENTS WITH THE RF GUN BASED INJECTOR FOR THE TESLA TEST FACILITY LINAC S. Schreiber for the TESLA Collaboration, DESY, 22603 Hamburg, Germany Abstract During 1997 and 1998 a first accelerator module was tested successfully at the TESLA Test Facility Linac (TTFL) at DESY. Eight superconducting

335

PERFORMANCE STATUS OF THE RF-GUN BASED INJECTOR OF THE TESLA TEST FACILITY LINAC  

E-Print Network (OSTI)

PERFORMANCE STATUS OF THE RF-GUN BASED INJECTOR OF THE TESLA TEST FACILITY LINAC S. Schreiber£ for the TESLA Collaboration, DESY, 22603 Hamburg, Germany Abstract The TESLA Test Facility Linac (TTFL) at DESY uses two modules with 8 TESLA superconducting accelerat- ing structures each to accelerate an electron

336

HINS Linac front end focusing system R&D  

SciTech Connect

This report summarizes current status of an R&D program to develop a focusing system for the front end of a superconducting RF linac. Superconducting solenoids will be used as focusing lenses in the low energy accelerating sections of the front end. The development of focusing lenses for the first accelerating section is in the production stage, and lens certification activities are in preparation at FNAL. The report contains information about the focusing lens design and performance, including solenoid, dipole corrector, and power leads, and about cryogenic system design and performance. It also describes the lens magnetic axis position measurement technique and discusses scope of an acceptance/certification process.

Apollinari, G.; Carcagno, R.H.; Dimarco, J.; Huang, Y.; Kashikhin, V.V.; Orris, D.F.; Page, T.M.; Rabehl, R.; Sylvester, C.; Tartaglia, M.A.; Terechkine, I.; /Fermilab /Argonne

2008-08-01T23:59:59.000Z

337

Induction Linac Systems Experiments for heavy ion fusion  

Science Conference Proceedings (OSTI)

The Lawrence Berkeley Laboratory and the Lawrence Livermore National Laboratory propose to build at LBL the Induction Linac Systems Experiments (ILSE), the next logical step toward the eventual goal of a heavy ion induction accelerator powerful enough to implode or drive inertial confinement fusion targets. Though much smaller than a driver, ILSE will be at full driver scale in several important parameters. Nearly all accelerator components and beam manipulations required for a driver will be tested. It is expected that ILSE will be built in stages as funds and technical progress allow. The first stage, called Elise will include all of the electrostatic quadrupole focused parts of ILSE.

Herrmannsfeldt, W.B. [Stanford Linear Accelerator Center, Menlo Park, CA (United States); Bangerter, R.O. [Lawrence Berkeley Lab., CA (United States). Accelerator and Fusion Research Div.

1994-06-01T23:59:59.000Z

338

AMPERE AVERAGE CURRENT PHOTOINJECTOR AND ENERGY RECOVERY LINAC.  

SciTech Connect

High-power Free-Electron Lasers were made possible by advances in superconducting linac operated in an energy-recovery mode. In order to get to much higher power levels, say a fraction of a megawatt average power, many technological barriers are yet to be broken. We describe work on CW, high-current and high-brightness electron beams. This will include a description of a superconducting, laser-photocathode RF gun employing a new secondary-emission multiplying cathode, an accelerator cavity, both capable of producing of the order of one ampere average current and plans for an ERL based on these units.

BEN-ZVI,I.; BURRILL,A.; CALAGA,R.; ET AL.

2004-08-17T23:59:59.000Z

339

Coherent Orthogonal Polynomials  

E-Print Network (OSTI)

We discuss as a fundamental characteristic of orthogonal polynomials like the existence of a Lie algebra behind them, can be added to their other relevant aspects. At the basis of the complete framework for orthogonal polynomials we put thus --in addition to differential equations, recurrence relations, Hilbert spaces and square integrable functions-- Lie algebra theory. We start here from the square integrable functions on the open connected subset of the real line whose bases are related to orthogonal polynomials. All these one-dimensional continuous spaces allow, besides the standard uncountable basis ${|x>}$, for an alternative countable basis ${|n>}$. The matrix elements that relate these two bases are essentially the orthogonal polynomials: Hermite polynomials for the line and Laguerre and Legendre polynomials for the half-line and the line interval, respectively. Differential recurrence relations of orthogonal polynomials allow us to realize that they determine a unitary representation of a non-compact Lie algebra, whose second order Casimir ${\\cal C}$ gives rise to the second order differential equation that defines the corresponding family of orthogonal polynomials. Thus, the Weyl-Heisenberg algebra $h(1)$ with ${\\cal C}=0$ for Hermite polynomials and $su(1,1)$ with ${\\cal C}=-1/4$ for Laguerre and Legendre polynomials are obtained. Starting from the orthogonal polynomials the Lie algebra is extended both to the whole space of the ${\\cal L}^2$ functions and to the corresponding Universal Enveloping Algebra and transformation group. Generalized coherent states from each vector in the space ${\\cal L}^2$ and, in particular, generalized coherent polynomials are thus obtained.

E Celeghini; Mariano A del Olmo

2012-05-29T23:59:59.000Z

340

APS - Energy Efficiency Solutions for Business | Department of Energy  

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

APS - Energy Efficiency Solutions for Business APS - Energy Efficiency Solutions for Business APS - Energy Efficiency Solutions for Business < Back Eligibility Commercial Industrial Institutional Local Government Retail Supplier Schools State Government Savings Category Home Weatherization Commercial Weatherization Heating & Cooling Commercial Heating & Cooling Cooling Construction Design & Remodeling Other Appliances & Electronics Commercial Lighting Lighting Manufacturing Maximum Rebate Small Customers ( Large Customers (>100 kW monthly demand): $500,000 + 50% of incentive over $500K Express Solutions (Refrigeration/Lighting Measures): 90% of project cost Schools: $250,000 (Small); $600,000 (Large) Custom projects: Up to 75% of incremental cost Retro-commissioning: $0.09 per kWh saved up to 75% of incremental cost (up

Note: This page contains sample records for the topic "aps linac coherent" 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.


341

APS User News-at-a-Glance, Issue 23  

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

5: May 24, 2004 5: May 24, 2004 1. Message from Murray 2. APSUO Welcomes New Steering Committee Members and New Chair 3. 2004 Users Meeting: The Lowdown on the Hoedown (or, It Was a Really Good Meeting) 4. Strategic Summer: Future Directions Taking Shape at Science Workshops 5. APS Welcomes New General User Program Administrator, W. Elane Streets 6. General User Program Nearing Two Year Mark 7. APS Wins Starring Role in Docudrama 8. Briefly Noted (user viewpoint in print; crystallographic, geologic databases available through library) 9. Administrative Dates and Deadlines 1. Message from Murray (Contact: Murray Gibson, jmgibson@aps.anl.gov) The great success of our recent user meeting attests to the accomplishments of the users of the Advanced Photon Source, for which I thank you all.

342

AP-XPS Measures MIEC Oxides in Action  

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

AP-XPS Measures MIEC Oxides in Action Print AP-XPS Measures MIEC Oxides in Action Print Oxide materials with mixed ionic-electronic conductivity (MIEC) can conduct both electrons and oxygen ions. MIEC oxides have broad applications, including use in solid-oxide fuel cells, high-temperature electrolysis for synthetic fuel production, and oxygen-separating membranes for chemical processes or NOx-free combustion; however, their surface activity under reaction conditions has been difficult, if not impossible, to ascertain, until recently. A team from the University of Maryland and Sandia National Laboratories joined ALS scientists on Beamlines 9.3.2 and 11.0.2 to overcome the vacuum limitations of conventional XPS instruments using ambient-pressure x-ray photoelectron spectroscopy (AP-XPS), providing the first in situ measurements of local surface oxidation states and electric potential in active MIEC electrodes.

343

Four Lawrence Livermore researchers named 2013 APS Fellows  

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

6 6 For immediate release: 12/23/2013 | NR-13-12-06 Four Lawrence Livermore National Laboratory scientists have been selected as 2013 fellows of the American Physical Society (APS). They include, from left: Charles Cerjan, Ian Thompson, Eric Schwegler and Marilyn Schneider. Four Lawrence Livermore researchers named 2013 APS Fellows Breanna Bishop, LLNL, (925) 423-9802, bishop33@llnl.gov LIVERMORE, Calif. - Four Lawrence Livermore National Laboratory scientists have been selected as 2013 fellows of the American Physical Society (APS). Physicist Charles Cerjan was cited by the Division of Atomic, Molecular and Optical Physics for "seminal contributions to time-dependent Schrodinger equation propagation algorithms and their application to particle scattering and intense field dynamics, the development of laser-produced

344

Ground vibration model studies for APS storage ring  

SciTech Connect

An analytical ground vibration model is developed for study of the vibration effects on the beam motion in the Advanced Photon Source (APS) storage ring. The different physical parameters associated with the wave characteristics and the vibration modes needed for the study are taken from the vibration studies carried out at the APS site. The implementation has been carried out using Mathematica{trademark}. The study is carried out for the frequency range 1--35 Hz, with a number of sources changing from one through ten. The program written in Mathematica{trademark}, calculates orbit distortion, beta wave change, tune change, dispersion change, and chromaticity change. However, the main parameter studied for the APS storage ring has been the orbit distortion. The merit factor associated with different modes excited by the vibrations has been calculated.

Koul, R.K.

1994-07-01T23:59:59.000Z

345

Andhra Pradesh Tribal Power Corporation AP TRIPCOR | Open Energy  

Open Energy Info (EERE)

Andhra Pradesh Tribal Power Corporation AP TRIPCOR Andhra Pradesh Tribal Power Corporation AP TRIPCOR Jump to: navigation, search Name Andhra Pradesh Tribal Power Corporation (AP TRIPCOR) Place Hyderabad, Andhra Pradesh, India Sector Hydro Product Hyderabad-based agency formed to set up micro hydro projects in tribal areas of Andhra Pradesh. Coordinates 17.6726°, 77.5971° 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":17.6726,"lon":77.5971,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

346

AP-XPS Measures MIEC Oxides in Action  

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

AP-XPS Measures MIEC Oxides in Action Print AP-XPS Measures MIEC Oxides in Action Print Oxide materials with mixed ionic-electronic conductivity (MIEC) can conduct both electrons and oxygen ions. MIEC oxides have broad applications, including use in solid-oxide fuel cells, high-temperature electrolysis for synthetic fuel production, and oxygen-separating membranes for chemical processes or NOx-free combustion; however, their surface activity under reaction conditions has been difficult, if not impossible, to ascertain, until recently. A team from the University of Maryland and Sandia National Laboratories joined ALS scientists on Beamlines 9.3.2 and 11.0.2 to overcome the vacuum limitations of conventional XPS instruments using ambient-pressure x-ray photoelectron spectroscopy (AP-XPS), providing the first in situ measurements of local surface oxidation states and electric potential in active MIEC electrodes.

347

APS - Renewable Energy Incentive Program | Department of Energy  

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

APS - Renewable Energy Incentive Program APS - Renewable Energy Incentive Program APS - Renewable Energy Incentive Program < Back Eligibility Commercial Residential Savings Category Bioenergy Home Weatherization Commercial Weatherization Solar Lighting Windows, Doors, & Skylights Buying & Making Electricity Energy Sources Water Heating & Cooling Swimming Pool Heaters Water Heating Commercial Heating & Cooling Heating Wind Maximum Rebate Residential systems: $50,000 or 50% of system costs, whichever is less Commercial systems: $75, 000 or 40% of system costs, whichever is less Program Info Funding Source RES Surchage State Arizona Program Type Utility Rebate Program Rebate Amount Residential and Small Commercial PV (up to 25 kW): $0.10/watt-DC Residential Solar Water Heating: $0.40/kWh-displaced

348

APS User News-at-a-Glance, Issue 17  

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

7: October 30, 2002 7: October 30, 2002 Contents: 1. Workshop: Operating Modes--What Are the Tradeoffs? 2. Workshop: Beyond Undulator A--New Directions and New Needs for Insertion Devices 3. New on the Floor: APS Introduces Locator Cards 4. Reminder: General User Proposals Due Nov. 1 5. Reminder: Non-U.S. Citizens Need New Badges ___________________________________________________________ 1. Workshop: Operating Modes--What Are the Tradeoffs? (Contact: klaffky@aps.anl.gov) The move in FY2002 to top-up operation proved very successful for both the accelerator staff and users. To build on that experience, the APS is interested in talking with users about the best ways to use this and other possible operating modes to both accommodate the broad spectrum of user needs and permit continuous improvement of the facility. With this goal in

349

Microsoft PowerPoint - aps07_wukitch-1.ppt  

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

APS-DPP Orlando, FL Nov 12-16, 2007 APS-DPP Orlando, FL Nov 12-16, 2007 1 ICRF Performance with Metallic Plasma Facing Components: Revenge of the Sheath Presented by S.J. Wukitch on behalf of Alcator C-Mod Team Outline: 1. Motivation and introduction to ICRF experiments. 2. Discuss RF impurity source identification results. 3. Present measurements of ICRF enhancement of plasma potential. Key Conclusions: 1. Important RF specific impurity sources are outside the divertor and linked to the active antenna. 2. ICRF enhanced sheaths had unexpected characteristics. 1. Scaling is dependent of confinement mode and wall conditions. 2. Observed residual modification of the plasma potential with insulating limiters. 49th APS-DPP Orlando, FL Nov 12-16, 2007 2 ICRF Role on ITER is to Heat the Plasma to Burning Condition

350

Linda Young of APS Elected Vice Chair of DAMOP  

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

Moffat of BioCARS and U. of C. Receives 2011 ACA Patterson Award Moffat of BioCARS and U. of C. Receives 2011 ACA Patterson Award Argonne's Fenter Wins Warren Award for X-ray Diffraction Studies Lahsen Assoufid Elected a Fellow of SPIE 2011 Arthur H. Compton Award Announced by APSUO X-Ray Focusing: Techniques and Applications APS News Archives: 2012 | 2011 | 2010 | 2009 2008 | 2007 | 2006 | 2005 2004 | 2003 | 2002 | 2001 2000 Subscribe to APS News rss feed Linda Young of APS Elected Vice Chair of DAMOP JULY 14, 2011 Bookmark and Share Linda Young Argonne Distinguished Fellow and Argonne National Laboratory X-ray Science Division (XSD) Director Linda Young has been elected vice chair of the Division of Atomic, Molecular, and Optical Physics of the American Physical Society (DAMOP). The position became official at the 2011 DAMOP Meeting

351

APS User News-at-a-Glance, Issue 32  

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

2: June 29, 2005 2: June 29, 2005 Contents 1. Message from Murray: XOR Tactical Plan Evolves; Three Upgrades Chosen 2. Science Highlight: Sequence to Structure in DNA 3. New Technique Captures Submicrosecond Images Using White Beam; Work Garners Argonne Award 4. Operating Mode Changes Decided for Summer Run 5. Proposal Deadlines Approaching: July 15 6. Crystallographic Exposure: APS at ACA 7. Four Elected to APS Users Organization Steering Committee 8. 2005 Users Meeting: A Rich Sampling of Science Past, Present, and Future --Briefly Noted subscribe to News Flash from lightsources.org meeting notice: neutron macromolecular crystallography at SNS, July 12-13 meeting notice: surface and interface characterization at APS, Sept. 8-9 meeting notice: Synchrotron Environmental Science III at Brookhaven,

352

APS User News-at-a-Glance, Issue 57  

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

7, September 17, 2009 7, September 17, 2009 CONTENTS MESSAGE FROM MURRAY: New XSD Division Director Named SCIENCE NEWS 1. Science & Research Highlights Chemists Reach from the Molecular to the Real World with Creation of 3-D DNA Crystals Boron-based Compounds Trick a Biomedical Protein Cockroaches Advance Student's Study of Ancient Life 2. New MOU Signed for APS Collaborative Development Team USER MATTERS 3. XOR/XSD Visiting Scientist Program Offered 4. APS Beam Time Access System 5. Partner User Proposals Offer Options for Long-term Beam Time 6. Launch of Redesigned APS Beamline Directory FACILITY NEWS 7. Workshop: On-line Brillouin Spectroscopy at GSECARS, September 23-25, 2009 8. FiberNet/BioCAT Fiber Diffraction Workshop Coming This Fall 9. Beamline Scientist Position Offered

353

APS User News-at-a-Glance, Issue 34  

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

4: September 26, 2005 4: September 26, 2005 Advanced Photon Source www.aps.anl.gov ============================================ CONTENTS 1. Message from Murray SCIENCE NEWS 2. DOE Supports Science and Technology Faculty, Students Affected by Katrina 3. Cheaper Silicon Found Effective for Solar Cells 4. Two APS Groups Awarded NIH Protein Structure Initiative Grants of More Than $100 Million 5. Argonne Supercomputing Resource Available to APS Users 6. Two from HP-CAT win Balzan Prize 7. Student User Meets Nobel Laureates FACILITY NEWS 8. Summer Schools Train 117 Students BRIEFLY NOTED ---"New user" scholarships available for SNS/HFIR users meeting ---Correction: Beamtime Allocation Committee meeting date ---New menu unwrapped at 401 Grill ---Construction affects access from west

354

APS - Multifamily Energy Efficiency Program | Department of Energy  

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

APS - Multifamily Energy Efficiency Program APS - Multifamily Energy Efficiency Program APS - Multifamily Energy Efficiency Program < Back Eligibility Construction Multi-Family Residential Savings Category Heating & Cooling Home Weatherization Construction Commercial Weatherization Commercial Heating & Cooling Design & Remodeling Other Appliances & Electronics Commercial Lighting Lighting Program Info State Arizona Program Type Utility Rebate Program Rebate Amount CFL Lighting in Dwellings: Free Energy Design Incentive: 50% of study cost, up to $5,000 Energy Assessments: Free T8 and T5 Fluorescents: $5-$12/unit Delamping: $5 - $10 LED Exit Signs/Traffic Signals: $25/unit LED Lamps: $10 - $15 LED Signage: $3/ln ft Refrigerated Case LED Lamps: $25 - $30 Occupancy Sensors: $0.12/connected watt Daylighting Controls: $0.30/connected watt

355

APS User News-at-a-Glance, Issue 37  

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

7: June 14, 2006 7: June 14, 2006 Advanced Photon Source www.aps.anl.gov ============================================ CONTENTS MESSAGE FROM MURRAY: APS Upgrade Proposal To Be Completed October 31 SCIENCE NEWS 1 . Featured Organization: Synchrotron-Related Theory Group, X-ray Science Division 2 . Research Highlights FACILITY NEWS 3. Update on XOR Beamline Upgrades: Sectors 1, 11, 12, and 32 4. Reorganization Centralizes Support for User Science 5 . Eighteen Beamlines Open to Partner Users: Proposals Due July 14 6 . Four Join APS Users Organization Steering Committee OPERATIONS NEWS 7 . Fall Schedule Features New Lattice 8 . Electrical Safety Requirements Prompt New Training, Inspections PEOPLE NEWS --Wendy L. Mao, 2006 Rosalind Franklin Young Investigator Award --Gabrielle Long, Division Director, X-ray Science Division

356

APS User News-at-a-Glance, Issue 20  

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

20: April 8, 2003 20: April 8, 2003 Contents: 1. Message from Murray: The APS in 20 Years 2. Users Meeting Draws Near, So Register Now! 3. Compton Award Winners Announced 4. N/X School Holds "Reunion" Workshop--Posters and Talks Invited 5. "Nuclear Lighthouse Effect" Studies Win BESSY Prize 6. Partner Users: Letters of Intent Due June 1 7. Results of General User Program Announced for Summer Run 8. Publications Database: A Comprehensive Record--With Your Help 9. Access Delays Possible May 12-16 ___________________________________________________________ 1. Message from Murray: The APS in 20 Years (Contact: Murray Gibson, jmgibson@aps.anl.gov) First of all, it is my pleasure to congratulate the winners of the 2003 Compton Award: Martin Blume, L. Doon Gibbs, Denis McWhan, and Kazumichi

357

APS User News-at-a-Glance, Issue 23  

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

6: July 6, 2004 6: July 6, 2004 1. Message from Murray 2. Research Highlight: Visualizing Ferroelectric Memory As It Fades 3. Construction Season in Chicago: Work Begins on CNM and LOM 437 4. Strategic Summer: Summary of July and August Workshops 5. The LCLS Experimental Program: Call for Letters of Intent 6. Briefly Noted (Proposal Deadline, Summaries of APS Research Available) 7. Administrative Dates and Deadlines 1. Message from Murray (Contact: Murray Gibson, jmgibson@aps.anl.gov) Workshops. The summer is ramping up with a series of exciting workshops on the “Future Scientific Directions for the APS,” culminating in a strategic planning meeting September 2nd and 3rd (read more in item 4). We hope that the momentum generated by this study will lead to development of

358

AP-XPS Measures MIEC Oxides in Action  

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

AP-XPS Measures MIEC Oxides in Action Print AP-XPS Measures MIEC Oxides in Action Print Oxide materials with mixed ionic-electronic conductivity (MIEC) can conduct both electrons and oxygen ions. MIEC oxides have broad applications, including use in solid-oxide fuel cells, high-temperature electrolysis for synthetic fuel production, and oxygen-separating membranes for chemical processes or NOx-free combustion; however, their surface activity under reaction conditions has been difficult, if not impossible, to ascertain, until recently. A team from the University of Maryland and Sandia National Laboratories joined ALS scientists on Beamlines 9.3.2 and 11.0.2 to overcome the vacuum limitations of conventional XPS instruments using ambient-pressure x-ray photoelectron spectroscopy (AP-XPS), providing the first in situ measurements of local surface oxidation states and electric potential in active MIEC electrodes.

359

APS User News-at-a-Glance, Issue 49  

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

49, October 3, 2008 49, October 3, 2008 CONTENTS MESSAGE FROM MURRAY SCIENCE NEWS 1. Update on APS Renewal 2. Featured Beamline: GSECARS Beamline 13-BM-C Offers On-the-Fly Scanning with 200 Hz Imaging for X-ray Scattering in Geosciences 3. Science & Research Highlights USER MATTERS 4. Laser Safety 5. Ultrafast Special Interest Group 6. Fellowship Applications Due Oct. 6, Nov. 3 FACILITY NEWS 7. Search Committee Formed for X-ray Science Division Director at APS PEOPLE NEWS 8. Meet the Scientific Advisory Committee BRIEFLY NOTED --No Smoking Policy Reminder --Save the Date: Users Week 2009 --Synchrotron Environmental Science Conference ===================================================== Instructions for subscribing, unsubscribing, and submitting info http://www.aps.anl.gov/Users/Communications/User_News/

360

APS User News-at-a-Glance, Issue 23  

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

4: March 12, 2004 4: March 12, 2004 1. Message from Murray: Next Steps in Strategic Plan 2. Destination APS: A Sampling of Student and Faculty Tours 3. Minutes of Scientific Advisory Committee Meeting Available 4. Proposals and Requests for Time Due March 17 5. Nominations Invited by March 15 for Rosalind Franklin Young Investigator Award 6. Ready, Set, Register! Users Meeting Web Site Is Live 7. User Office Welcomes Nena Moonier 8. Briefly Noted (opportunities for hands-on training and tours) 9. Administrative Dates and Deadlines ---------------------------------------------------------------------------------- Link directly to web version for quicker access to stories http://www.aps.anl.gov/user/news/news_24.html ----------------------------------------------------------------------------------

Note: This page contains sample records for the topic "aps linac coherent" 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.


361

APS ALternative Fuel (Hydrogen) Pilot Plant Monitoring System  

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

502 502 U.S. Department of Energy FreedomCAR & Vehicle Technologies Program Advanced Vehicle Testing Activity APS Alternative Fuel (Hydrogen) Pilot Plant Monitoring System Dimitri Hochard James Francfort July 2005 Idaho National Laboratory Operated by Battelle Energy Alliance INL/EXT-05-00502 U.S. Department of Energy FreedomCAR & Vehicle Technologies Program Advanced Vehicle Testing Activity APS Alternative Fuel (Hydrogen) Pilot Plant Monitoring System Dimitri Hochard a James Francfort b July 2005 Idaho National Laboratory Transportation Technology Department Idaho Falls, Idaho 83415 Prepared for the U.S. Department of Energy Assistant Secretary for Energy Efficiency and Renewable Energy Under DOE Idaho Operations Office

362

APS User News-at-a-Glance, Issue 36  

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

6: February 28, 2006 6: February 28, 2006 Advanced Photon Source www.aps.anl.gov ============================================ CONTENTS 1. Message from Murray SCIENCE NEWS 2. Featured Beamline: Crystal-handling Robot Earns Loyal Following at 17-ID 3. Science Headlines: A Strange, New Fluid-like State of Matter; Molecular Structure of a Key Viral Protein FACILITY NEWS 4. Proposals Due March 10 5. Summer Schedule Published 6. Scientific Advisory Committee Considers New Proposals, Welcomes New Members 7. Users Meeting Registration Open, Abstract Deadline March 15 8. Directory of APS Scientific Contacts Now Available BRIEFLY NOTED ---Meeting notice: Synchrotron radiation in materials science ---Meeting notice: Users Meeting adjunct workshops DATES AND DEADLINES ----------------------------------------------------------------------------------------------

363

Linac Alignment Algorithm: Analysis on 1-to-1 Steering  

SciTech Connect

In a linear accelerator, it is important to achieve a good alignment between all of its components (such as quadrupoles, RF cavities, beam position monitors et al.), in order to better preserve the beam quality during acceleration. After the survey of the main linac components, there are several beam-based alignment (BBA) techniques to be applied, to further optimize the beam trajectory and calculate the corresponding steering magnets strength. Among these techniques the most simple and straightforward one is the one-to-one (1-to-1) steering technique, which steers the beam from quad center to center, and removes the betatron oscillation from quad focusing. For a future linear collider such as the International Linear Collider (ILC), the initial beam emittance is very small in the vertical plane (flat beam with {gamma}{epsilon}{sub y} = 20-40nm), which means the alignment requirement is very tight. In this note, we evaluate the emittance growth with one-to-one correction algorithm employed, both analytically and numerically. Then the ILC main linac accelerator is taken as an example to compare the vertical emittance growth after 1-to-1 steering, both from analytical formulae and multi-particle tracking simulation. It is demonstrated that the estimated emittance growth from the derived formulae agrees well with the results from numerical simulation, with and without acceleration, respectively.

Sun, Yipeng; Adolphsen, Chris; /SLAC

2011-08-19T23:59:59.000Z

364

Transient Quantum Coherent Response to a Partially Coherent Radiation Field  

E-Print Network (OSTI)

The response of an arbitrary closed quantum system to a partially coherent electric field is investigated, with a focus on the transient coherences in the system. As a model we examine, both perturbatively and numerically, the coherences induced in a three level $V$ system. Both rapid turn-on and pulsed turn-on effects are investigated. The effect of a long and incoherent pulse is also considered, demonstrating that during the pulse the system shows a coherent response which reduces after the pulse is over. Both the pulsed scenario and the thermally broadened CW case approach a mixed state in the long time limit, with rates dictated by the adjacent level spacings and the coherence time of the light, and via a mechanism that is distinctly difference from traditional decoherence. These two excitation scenarios are also explored for a minimal "toy" model of the electronic levels in pigment protein complex PC645 by both a collisionally broadened CW laser and by a noisy pulse, where unexpectedly long transient coherence times are observed and explained. The significance of environmentally induced decoherence is noted.

Z. S. Sadeq; Paul Brumer

2013-12-10T23:59:59.000Z

365

Intermediate-break LOCA analyses for the AP600 design  

Science Conference Proceedings (OSTI)

A postulated double-ended guillotine break of a direct-vessel-injection line in an AP600 plant has been analyzed. This event is characterized as an intermediate break loss-of-coolant accident (IBLOCA). Most of the insights regarding the response of the AP600 safety systems to the postulated accident are derived from calculations performed with the TRAC-PFl/MOD2 code. However, complementary insights derived from a scaled experiment conducted in the ROSA facility, as well as insights based upon calculations by other codes, are also presented. The key processes occurring in an AP600 during a IBLOCA are primary coolant system depressurization, inventory depletion, inventory replacement via emergency core coolant injection, continuous core cooling, and long-term decay heat rejection to the atmosphere. Based upon the calculated and experimental results, the AP600 will not experience a core heat up and will reach a safe shutdown state using only safety-class equipment. Only the early part of the long-term cooling period initiated by In-containment Refueling Water Storage Tank injection was evaluated Thus, the observation that the core is continuously cooled should be verified for the latter phase of the long-term cooling period, the interval when sump injection and containment cooling processes are important.

Boyack, B.E.; Lime, J.F.

1995-07-01T23:59:59.000Z

366

Quantum-Bayesian Coherence  

E-Print Network (OSTI)

In a quantum-Bayesian take on quantum mechanics, the Born Rule cannot be interpreted as a rule for setting measurement-outcome probabilities from an objective quantum state. But if not, what is the role of the rule? In this paper, we argue that it should be seen as an empirical addition to Bayesian reasoning itself. Particularly, we show how to view the Born Rule as a normative rule in addition to usual Dutch-book coherence. It is a rule that takes into account how one should assign probabilities to the consequences of various intended measurements on a physical system, but explicitly in terms of prior probabilities for and conditional probabilities consequent upon the imagined outcomes of a special counterfactual reference measurement. This interpretation is seen particularly clearly by representing quantum states in terms of probabilities for the outcomes of a fixed, fiducial symmetric informationally complete (SIC) measurement. We further explore the extent to which the general form of the new normative rule implies the full state-space structure of quantum mechanics. It seems to get quite far.

Christopher A. Fuchs; Ruediger Schack

2009-06-11T23:59:59.000Z

367

Coherent control of neutron interferometry  

E-Print Network (OSTI)

In this thesis, several novel techniques are proposed and demonstrated for measuring the coherent properties of materials and testing aspects of quantum information processing using a single crystal neutron interferometer. ...

Pushin, Dmitry A

2007-01-01T23:59:59.000Z

368

APS beamline standard components handbook. Version 1.1  

SciTech Connect

It is clear that most Advanced Photon Source (APS) Collaborative Access Team (CAT) members would like to concentrate on designing specialized equipment related to their scientific programs rather than on routine or standard beamline components. Thus, an effort is in progress at the APS to identify standard and modular components of APS beamlines. Identifying standard components is a nontrivial task because these components should support diverse beamline objectives. To assist with this effort, the APS has obtained advice and help from a Beamline Standardization and Modularization Committee consisting of experts in beamline design, construction, and operation. The staff of the Experimental Facilities Division identified various components thought to be standard items for beamlines, regardless of the specific scientific objective of a particular beamline. A generic beamline layout formed the basis for this identification. This layout is based on a double-crystal monochromator as the first optical element, with the possibility of other elements to follow. Pre-engineering designs were then made of the identified standard components. The Beamline Standardization and Modularization Committee has reviewed these designs and provided very useful input regarding the specifications of these components. We realize that there will be other configurations that may require special or modified components. This Handbook in its current version (1.1) contains descriptions, specifications, and pre-engineering design drawings of these standard components. In the future, the APS plans to add engineering drawings of identified standard beamline components. Use of standard components should result in major cost reductions for CATs in the areas of beamline design and construction.

Kuzay, T.M.

1992-01-01T23:59:59.000Z

369

Covariant Closed String Coherent States  

Science Conference Proceedings (OSTI)

We give the first construction of covariant coherent closed string states, which may be identified with fundamental cosmic strings. We outline the requirements for a string state to describe a cosmic string, and provide an explicit and simple map that relates three different descriptions: classical strings, light cone gauge quantum states, and covariant vertex operators. The resulting coherent state vertex operators have a classical interpretation and are in one-to-one correspondence with arbitrary classical closed string loops.

Hindmarsh, Mark; Skliros, Dimitri [Department of Physics and Astronomy, University of Sussex, Brighton, East Sussex BN1 9QH (United Kingdom)

2011-02-25T23:59:59.000Z

370

Energy recovery linacs in high-energy and nuclear physics  

Science Conference Proceedings (OSTI)

Energy Recovery Linacs (ERL) have significant potential uses in High Energy Physics and Nuclear Physics. We describe some of the potential applications which are under development by our laboratories in this area and the technology issues that are associated with these applications. The applications that we discuss are electron cooling of high-energy hadron beams and electron-nucleon colliders. The common issues for some of these applications are high currents of polarized electrons, high-charge and high-current electron beams and the associated issues of High-Order Modes. The advantages of ERLs for these applications are numerous and will be outlined in the text. It is worth noting that some of these advantages are the high-brightness of the ERL beams and their relative immunity to beam-beam disturbances.

I. Ben-Zvi; Ya. Derbenev; V. Litvinenko; L. Merminga

2005-03-01T23:59:59.000Z

371

NERSC User James Drake Receives 2010 APS Maxwell Prize for Plasma...  

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

User James Drake Receives 2010 APS Maxwell Prize for Plasma Physics NERSC User James Drake Receives 2010 APS Maxwell Prize for Plasma Physics January 31, 2011 drake10.jpg Long-time...

372

Audit Report: AP-B-95-02 | Department of Energy  

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

Audit Report: AP-B-95-02 July 31, 1995 Audit of Selected Aspects of the Unclassified Computer Security Program at a DOE Headquarters Computing Facility Audit Report: AP-B-95...

373

894 AP880212-0103 -1 ville is 60 miles east of Aspen , 40 ...  

Science Conference Proceedings (OSTI)

894 AP880212-0103 -1 ville is 60 miles east of Aspen , 40 miles south o 894 AP880328-0088 -1 all overnight , while 6 inches was reported at Asp ...

2002-04-29T23:59:59.000Z

374

Industry AP-913 Capabilities Database Version 1.0 on CD-ROM  

Science Conference Proceedings (OSTI)

The Industry AP-913 Capabilities Database provides users with a searchable index of EPRI and industry documents relating to the implementation of the AP-913 Equipment Reliability Process promulgated by the Institute of Nuclear Power Operations (INPO). The database contains a comprehensive list of industry documents that relate to the AP-913 Equipment Reliability Process . The products are mapped to the six major areas of AP-913 (Process Instructions) and to the activity elements within each of the major ...

2003-07-14T23:59:59.000Z

375

Testing and Implementation Progress on the Advanced Photon Source (APS) Linear Accelerator (Linac) High-Power S-band Switching System  

E-Print Network (OSTI)

An S-band linear accelerator is the source of particles and the front end of the Advanced Photon Source injector. In addition, it supports a low-energy undulator test line (LEUTL) and drives a free-electron laser (FEL). A waveguide-switching and distribution system is now under construction. The system configuration was revised to be consistent with the recent change to electron-only operation. There are now six modulator-klystron subsystems, two of which are being configured to act as hot spares for two S-band transmitters each, so that no single failure will prevent injector operation. The two subsystems are also used to support additional LEUTL capabilities and off-line testing. Design considerations for the waveguide-switching subsystem, topology selection, control and protection provisions, high-power test results, and current status are described

Grelick, A E; Berg, S; Dohan, D A; Goeppner, G A; Kang, Y W; Nassiri, A; Pasky, S; Pile, G; Smith, T; Stein, S J

2000-01-01T23:59:59.000Z

376

Energy Recovery Linac cavity at BNL | U.S. DOE Office of Science (SC)  

Office of Science (SC) Website

Energy Recovery Linac cavity at BNL Energy Recovery Linac cavity at BNL Nuclear Physics (NP) NP Home About Research Facilities Science Highlights Benefits of NP Spinoff Applications Spinoff Archives SBIR/STTR Applications of Nuclear Science and Technology Funding Opportunities Nuclear Science Advisory Committee (NSAC) News & Resources Contact Information Nuclear Physics U.S. Department of Energy SC-26/Germantown Building 1000 Independence Ave., SW Washington, DC 20585 P: (301) 903-3613 F: (301) 903-3833 E: sc.np@science.doe.gov More Information » Spinoff Archives Energy Recovery Linac cavity at BNL Print Text Size: A A A RSS Feeds FeedbackShare Page Application/instrumentation: Energy Recovery Linac cavity Developed at: Brookhaven National Laboratory, New York and Advanced Energy Systems, New York Developed in:

377

EA-1087: Proposed Induction Linac System Experiments in Building 51B at  

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

7: Proposed Induction Linac System Experiments in Building 7: Proposed Induction Linac System Experiments in Building 51B at Lawrence Berkeley National Laboratory, Berkeley, California EA-1087: Proposed Induction Linac System Experiments in Building 51B at Lawrence Berkeley National Laboratory, Berkeley, California SUMMARY This EA evaluates the environmental impacts of a proposal to modify existing Building 51B at the U.S. Department of Energy's Lawrence Berkeley National Laboratory to install and conduct experiments on a new Induction Linear Accelerator System. PUBLIC COMMENT OPPORTUNITIES None available at this time. DOCUMENTS AVAILABLE FOR DOWNLOAD September 8, 1995 EA-1087: Finding of No Significant Impact Proposed Induction Linac System Experiments in Building 51B at Lawrence Berkeley National Laboratory, Berkeley, California

378

High Current Energy Recovery Linac at BNL | U.S. DOE Office of Science (SC)  

Office of Science (SC) Website

High Current Energy Recovery Linac at High Current Energy Recovery Linac at BNL Nuclear Physics (NP) NP Home About Research Facilities Science Highlights Benefits of NP Spinoff Applications Spinoff Archives SBIR/STTR Applications of Nuclear Science and Technology Funding Opportunities Nuclear Science Advisory Committee (NSAC) News & Resources Contact Information Nuclear Physics U.S. Department of Energy SC-26/Germantown Building 1000 Independence Ave., SW Washington, DC 20585 P: (301) 903-3613 F: (301) 903-3833 E: sc.np@science.doe.gov More Information » Spinoff Archives High Current Energy Recovery Linac at BNL Print Text Size: A A A RSS Feeds FeedbackShare Page Application/instrumentation: High Current Energy Recovery Linac Developed at: Brookhaven National Laboratory, New York and Advanced Energy Systems, New

379

Overview of the High Intensity Neutrino Source Linac R&D program at Fermilab  

SciTech Connect

The Fermilab High Intensity Neutrino Source (HINS) Linac R&D program is building a first-of-a-kind 60 MeV superconducting H- linac. The HINS Linac incorporates superconducting solenoids for transverse focusing, high power RF vector modulators for independent control of multiple cavities powered from a single klystron, and superconducting spoke-type accelerating cavities starting at 10 MeV. This will be the first application and demonstration of any of these technologies in a low-energy, high-intensity proton/H- linear accelerator. The HINS effort is relevant to a high intensity, superconducting H- linac that might serve the next generation of neutrino physics and muon storage ring/collider experiments. An overview of the HINS program, machine design, status, and outlook is presented.

Webber, R.C.; Appollinari, G.; Carneiro, J.P.; Gonin, I.; Hanna, B.; Hays, S.; Khabiboulline, T.; Lanfranco, G.; Madrak, R.L.; Moretti, A.; Nicol, T.; /Fermilab /Argonne

2008-09-01T23:59:59.000Z

380

Summary of sessions B and F: High intensity linacs and frontend & proton drivers  

SciTech Connect

This paper summarizes the sessions B&F of the 33rd ICFA Advanced Beam Dynamics Workshop on High Intensity & High Brightness Hadron Beams held in Bensheim, Germany. It covers high intensity linacs, front ends and proton driver topics.

Ferdinand, R.; /Saclay; Chou, W.; /Fermilab; Galambos, J.; /Oak Ridge

2005-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "aps linac coherent" 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.


381

APS User News-at-a-Glance, Issue 38  

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

39: September 26, 2006 39: September 26, 2006 Advanced Photon Source www.aps.anl.gov ============================================ CONTENTS MESSAGE FROM MURRAY 1. Upgrade Planning in High Gear FACILITY NEWS 2. Policy Changes Introduced for General Users: "Project" Proposals, Longer Durations 3. Proposal System Changed and Upgraded 4. Upgrade Update: Machine Advisory Committee Formed 5. Argonne Holds Open House--All Ages Welcome OPERATION NEWS 6. Schedule Published for Run 2007-1 7. Feedback Sought: 1296 Singlet Mode to Be Discontinued 8. Feedback Sought: RHB Lattice Proposed as Standard, Watch Performance in October 9. Data Transfer Speeds: Networking at Argonne and the APS 10. Heat-Wave Heroes BRIEFLY NOTED --Applications Sought for Argonne Named Postdoctoral Fellowships (up to

382

APS User News-at-a-Glance, Issue 15  

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

6; September 6, 2002 6; September 6, 2002 Contents: 1. Message from Murray: Updates on User Issues Task Force Reports APS Forms Scientific Advisory Committee NE-CAT and LS-CATs sign MOUs School on Neutron and X-ray Scattering: Great Success! New Staff to Support Users Operations Update 1. Message from Murray: Update on User Issues (Contact: jmgibson@aps.anl.gov) On August 2, representatives from the four U.S. Department of Energy/Basic Energy Sciences (DOE/BES) light sources met in Washington with DOE/BES officials to discuss several mandated operational changes, all of which are directed toward greater user accessibility and greater accountability by the facilities. The four light source directors were asked to develop a joint 10-year vision statement for facility development. In addition, they

383

Operation of the APS photoinjector drive laser sytem  

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

07 07 Rev. 1, June 2008 Operation of the APS Photoinjector Drive Laser System Yuelin Li Abstract The APS photoinjector drive laser system has been in operation since 1999 and is achieving a performance level exceeding the requirement of stable operation of the LEUTL FEL system. One remarkable number is the UV energy stability of better than 2% rms, sometimes less than 1% rms. This report summarizes the operation experience of the laser system and the improvements made along the way. We also outline the route of upgrade of the system and some frontier laser research and development opportunities in ultrabright electron beam generation. I. Introduction A photoinjector is the only way to generate the high-brightness beams required by fourth-

384

APS User News-at-a-Glance, Issue 55  

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

5, July 8, 2009 5, July 8, 2009 CONTENTS MESSAGE FROM MURRAY SCIENCE NEWS 1. Beamline 11-BM Expands High-resolution Powder Diffraction Program, Now Accepting On-site Users 2. Science & Research Highlights USER MATTERS 3. Workshop: On-line Brillouin Spectroscopy--Basic Principles and Applications for High Pressure Research Supported by GSECARS and COMPRES 4. Workshop: July 29-31, 2009: Science Drivers for Hard X-ray Upgrades to LCLS 5. NUFO Meeting Explores Variety of Topics FACILITY NEWS 6. Argonne 's Bike Sharing Program Available to APS Users 7. The APS Employment Bulletin Board BRIEFLY NOTED -- General User Program Deadline for Cycle 2009-3 is July 10 -- SSRL/LCLS Users' Meeting and Workshop October 18-20, 2009 -- SXNS-11 Scheduled for July 14-17, 2010 =====================================================

385

Directions to the APS User Office | Advanced Photon Source  

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

Directions to the APS User Office Directions to the APS User Office New users must go directly to the User Office when they arrive for their first visit. Current users who have any change in affiliation, visa status, etc., should also check in with the User Office to update their files. From the Argonne Main Gate: Ask for a map at the Main Gate or the Argonne Information Center when you arrive. Follow the signs to the Argonne Guest House. From the Guest House, Building 401 is visible about 0.3 miles (0.5 km) to the southeast. Enter Building 401 by the main steps. In the atrium of Building 401, turn to the left and look for the signs directing you to the User Office (on the first floor). Hours The User Office is open 8:30 a.m. to 5:00 p.m. Monday-Friday (other times by arrangement in exceptional circumstances).

386

Two from APS Receive U. of C. Distinguished Performance Award  

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

Two from APS Receive U. of C. Distinguished Performance Award Two from APS Receive U. of C. Distinguished Performance Award Wah-Keat Lee and Jin Wang (both ANL-XFD) are among five scientists from the U.S. Department of Energy's Argonne National Laboratory who have received the 2005 University of Chicago Board of Governors for Argonne Distinguished Performance Award, which recognizes outstanding scientific or technical achievements or a distinguished record of achievements. Wang and Lee are being honored for their success in using X-rays in a wide range of research. Wang is a world-renowned expert in the application of X-ray scattering to a variety of materials science problems. He is best known for his research into the dynamics of fuel sprays, where he applied an innovative research approach and achieved unique results. Lee, after

387

APS Guideline for Hand Tool and Portable Power Tool Usage  

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

Hand Tool and Portable Power Tool Usage Hand Tool and Portable Power Tool Usage Introduction CAT/XSD recognizes that the misuse and improper maintenance of hand tools and portable power tools cause a significant number of injuries to even "experienced" workers. Consequently, CAT/XSD has adopted the following policies and procedures to minimize the hazards associated with the use of such equipment at the APS. These guidelines apply to all use of hand tools and portable power tools by CAT/XSD personnel while performing maintenance or installation activities at the APS. Although CAT/XSD feels that most of the guidelines also apply to tool usage during experimental activities, CAT/XSD will not require that short-term users complete the training described below. Using Tools Safely If you have not had formal training in the use of common tools, either view

388

APS User News-at-a-Glance, Issue 43  

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

3: June 27, 2007 3: June 27, 2007 Advanced Photon Source, Argonne National Laboratory www.aps.anl.gov ============================================ CONTENTS MESSAGE FROM MURRAY SCIENCE NEWS 1. Research Highlights & Annual Report 2. Featured Beamline: Powder Diffraction Beamline 11-BM to Offer High-Throughput, Mail-in Service 3. DOE Supercomputing "User Facilities" Seek Proposals by August 8 USER MATTERS 4. Users Week Draws Record Crowd 5. New Steering Committee Members Elected 6. General User Program Continues to Grow 7. Score Improvement on Proposals: Policy Confirmed 8. Foreign Nationals: Don't Get Stuck Staying Off Site FACILITY NEWS 9. Electrical Safety Reminder: Get Assistance with Electrical Problems! 10. Floor Coordinator Hours Have Changed PEOPLE NEWS -- Julie Olmsted Cross Joins APS as User Technical Interface

389

APS 7-BM Beamline: X-Ray Resources  

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

Useful Websites Useful Websites X-Ray Interactions with Matter from CRXO at LBNL. Intuitive interface for x-ray transmission and reflectivity for a wide range of materials. X-Ray Data Booklet from LBNL. Slightly outdated in places, but many useful tables of edge energies, fluorescence lines, and crystal lattice spacings. NIST XCOM Database. Powerful database of photoelectric absorption, elastic scattering, and Compton scattering cross-sections for a wide range of materials. X-Ray Server. Maintained by Sergey Stepanov at GMCA at the APS, this website has several powerful calculators for simulating x-ray reflection and diffraction. Software X-Ray Oriented Programs (XOP). This program, written by scientists at the ESRF and APS, is widely used in the synchrotron research community.

390

APS Policy and Procedure for the Management of Chemicals  

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

APS Policy and Procedure for the Management of Chemicals Introduction This document describes the policies and practices that CAT/XSD will follow to reduce accidents and control adverse effects that may result from the use of hazardous substances in CAT/XSD’s facilities at the APS. This guideline applies to all chemicals used for CAT/XSD’s installation and maintenance activities and to all chemical reagents used for laboratory purposes. Experimental samples are included only to the extent specified below. While this guideline does provide policies and general guidance, it may not include all precautions that are needed for the safe conduct of certain operations. CAT/XSD has developed other guidelines that define how hazard controls for individual operations will be determined and implemented. In

391

ANL/APS/TB-3 Undulator A Characteristics and Specifications  

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

ANL/APS/TB-3 ANL/APS/TB-3 Undulator A Characteristics and Specifications by B. Lai, A. Khounsary,R. Savoy, L. Moog, and E. Gluskin February 1993 Advanced Photon Source . & Argonne National Laboratory, Argonne, Illinois 60439 o operated by The University of Chicago for the United States Department of Energy under Contract W-31-1 09-Eng-38 '"~ Argonne National Laboratory, with facilties in the states of Ilinois and Idaho, is owned by the United States government, and operated by The University of Chicago under the provisions of a contract with the Department of Energy. . DISCLAIMER This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, makes any waranty, express

392

APS User News-at-a-Glance, Issue 38  

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

8: August 23, 2006 8: August 23, 2006 Advanced Photon Source www.aps.anl.gov ============================================ CONTENTS MESSAGES FROM MURRAY 1. Planning for the APS Upgrade Makes Major Progress 2. Call for Insertion Device and Front End Proposals from Sectors, Due December 1 SCIENCE NEWS 3. Research Highlights 4. 2007 Crosscut Review to Feature Structural Biology 5. Report on the Fifth Conference on Synchrotron Radiation in Materials Science (SRMS-5) FACILITY NEWS 6. DOE Awards New Contract for Operation of Argonne PEOPLE NEWS --Goodbye, Elane Streets (GUP Administrator) --Hello, Paul Rossi (ES&H Coordinator, XSD) BRIEFLY NOTED --Catalysis Interest Group Established --Proposals Sought for Jazz Computing Cluster, due September 5 (or ongoing) --Sub-Angstrom Microscopy and Microanalysis Facility

393

APS User News-at-a-Glance, Issue 29  

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

29: January 24, 2005 29: January 24, 2005 APS Community Mourns Howard Birnbaum, Long-time Friend and Advisor Message from Murray : Scientific Strategic Plan Nearing Completion Cross-cut review on January 26: Science requiring the pulsed structure of the APS x-ray beam Research highlight: In situ kinetics study reveals a key to consistent self-assembly of nanocrystal superlattices Users Meeting May 2-6 celebrates anniversary, beginning Mail-in crystallography program introduced for general users General User update: More beamlines, extra beam time, next deadline Users invited to support accelerator research through American Physical Society People news: New leadership in accelerator operations, x-ray microscopy, and ESH/QA; Joanne Day retiring in March Administrative dates and deadlines

394

APS User Newse 2011 Year-End Index  

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

1 1 2010 2009 2008 2007 2006 2005 2004 2003 2002 2001 2000 APS User News Year-End Index 2011 Issue 67 (02.10.11) DIRECTOR'S CORNER SCIENCE NEWS 1. Science Highlights USER MATTERS 2. Reminder! Compton Award Nominations Sought! Deadline February 15 3. Seeking Nominees for the APSUO Steering Committee-Deadline March 31 4. X-ray App for I-Phone, I-Touch, I-Pad FACILITY NEWS 5. 2011 APS/CNM/EMC Users Meeting: HIGHLIGHT, PROMOTE, STIMULATE USER SCIENCE 6. In Memoriam: Bob Batterman AWARDS AND HONORS 7. Lahsen Assoufid Named Fellow of the Optical Society 8. George Srajer and Jin Wang Elected Fellows of the American Physical Society BRIEFLY NOTED -- 2011 American Association for the Advancement of Science Annual Meeting, February 17-21, 2011 -- 13th National School on Neutron and X-ray Scattering: Application

395

APS User News-at-a-Glance, Issue 13  

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

3; March 19, 2002 3; March 19, 2002 Contents: 1. GM/CA-CAT Signs MOU Message from Murray Gibson: APS Colloquium Returns Research Highlight: X-rays Image Shock Waves from Fuel Spray Applications Available for the Fourth National Neutron and X-ray Scattering School User Activity Report Call User Badge and Training Information APSUO Corner: Check the Employment Bulletin Board 8. Operations Update 1. GM/CA-CAT Signs MOU (Contact: smithj@purdue.edu ) On March 18, Murray Gibson, Associate Laboratory Director for the APS, and Janet Smith, GM/CA-CAT Director, jointly signed a Memorandum of Understanding (MOU) with the Director of Argonne National Laboratory Director, Hermann Grunder; the Director of the National Institute of General Medical Sciences, Marvin Cassman; and the Director of the National

396

AP-4-B Wholesale Power Rate Schedule | Department of Energy  

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

4-B Wholesale Power Rate Schedule 4-B Wholesale Power Rate Schedule AP-4-B Wholesale Power Rate Schedule Area: American Electric Power System: Kerr-Philpott This rate schedule shall be available to public bodies and cooperatives (any one of whom is hereinafter called the Customer) in Virginia served through the facilities of American Electric Power Service Corporation (hereinafter called the Company) and PJM Interconnection LLC (hereinafter called PJM). This rate schedule shall be applicable to the sale at wholesale of power and accompanying energy generated at the John H. Kerr and Philpott Projects (hereinafter called the Projects) and sold under appropriate contracts between the Government and the Customer. Document Available for Download AP-4-B Rate Schedule More Documents & Publications

397

Impedance studies - Part 4: The APS impedance budget  

SciTech Connect

This note will wrap up the numerical results that were obtained in our calculations of the wake potentials, the loss factors, and the impedances for a variety of structures in the APS storage ring. It consists of five sections and one appendix. Section 1 is an introduction. Section 2 summarizes the hand calculations. The computer calculations are the subject 1 of Section 3. Section 4 discusses several tests in our numerical methods. Section 5 presents the APS impedance budget, along with some discussion. The appendix contains the figures of the structures, the longitudinal/transverse wake potentials and the real/imaginary part of the impedances of various sorts of geometries that have been included in the budget.

1988-07-01T23:59:59.000Z

398

Status of APS 1-Mwe Parabolic Trough Project  

SciTech Connect

Arizona Public Service (APS) is currently installing new power facilities to generate a portion of its electricity from solar resources that will satisfy its obligation under the Arizona Environmental Portfolio Standard (EPS). During FY04, APS began construction on a 1-MWe parabolic trough concentrating solar power plant. This plant represents the first parabolic trough plant to begin construction since 1991. Site preparation and construction activities continued throughout much of FY05, and startup activities are planned for Fall 2005 (with completion early in FY06). The plant will be the first commercial deployment of the Solargenix parabolic trough collector technology developed under contract to the National Renewable Energy Laboratory. The plant will use an organic Rankine cycle (ORC) power plant, provided by Ormat. The ORC power plant is much simpler than the conventional steam Rankine cycle plant and allows unattended operation of the facility.

Canada, S.; Brosseau, D.; Kolb, G.; Moore, L.; Cable, R.; Price, H.

2005-11-01T23:59:59.000Z

399

Formation of electron bunches with tailored current profiles using multi-frequency linacs  

SciTech Connect

Tailoring an electron bunch with specific current profile can provide substantial enhancement of the transformer ratio in beam-driven acceleration methods. We present a method relying on the use of a linac with accelerating sections operating at different frequencies followed by a magnetic bunch compressor. The experimental verfification of the technique in a two-frequency linac is presented. The compatibility of the proposed technique with the formation and acceleration of a drive and witness bunches is numerically demonstrated.

Piot, P.; Behrens, C.; Gerth, C.; Lemery, F.; Mihalcea, D.; Stoltz, P. [Northern Illinois Center for Accelerator and Detector Development and Department of Physics, Northern Illinois University, DeKalb, IL 60115 (United States) and Accelerator Physics Center, Fermi National Accelerator Laboratory, Batavia, IL 60510 (United States); Deutsches Elektronen-Synchrotron DESY, Notkestrasse 85 D-22607 Hamburg (Germany); Northern Illinois Center for Accelerator and Detector Development and Department of Physics, Northern Illinois University, DeKalb, IL 60115 (United States); Tech-X Corporation, Boulder, CO 80303 (United States)

2012-12-21T23:59:59.000Z

400

Work plan, AP-102 mixer pump removal and pump replacement  

DOE Green Energy (OSTI)

The objective of this work plan is to plan the steps and estimate the costs required to remove the failed AP-102 mixer pump, and to plan and estimate the cost of the necessary design and specification work required to order a new, but modified, mixer pump including the pump and pump pit energy absorbing design. The main hardware required for the removal of the mixer is as follows: a flexible receiver and blast shield; a metal container for the pulled mixer pump; and a trailer and strongback to haul and manipulate the container. Additionally: a gamma scanning device will be needed to detect the radioactivity emanating from the mixer as it is pulled from the tank; a water spray system will be required to remove tank waste from the surface of the mixer as it is pulled from the AP-102 tank; and a lifting yoke to lift the mixer from the pump pit (the SY-101 Mixer Lifting Yoke will be used). A ``green house`` will have to be erected over the AP-102 pump pit and an experienced Hoisting and Rigging crew must be assembled and trained in mixer pump removal methods before the actual removal is undertaken.

Jimenez, R.F.

1994-09-01T23:59:59.000Z

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


401

Long-term stability of the APS storage ring  

SciTech Connect

The Advanced Photon Source (APS), a third-generation synchrotron light source, was commissioned in 1995 at Argonne National Laboratory and has been fully operational for beamline users since 1997. The APS storage ring can accommodate up to 68 user beamlines; about 70% of the available beamlines are currently in use by various collaborative access teams (CATs). The 7-GeV synchrotron light source produces light in the soft to hard x-ray range that is used for research in such areas as x-ray instrumentation; material, chemical and atomic sciences; biology; and geo/soil/environmental sciences. For the successful operation of an x-ray light source such as the Advanced Photon Source, the long-term stability of the concrete floor supporting the beam components and user beamlines is crucial. Settlements impact the orbit and location of the x-ray source points as well as the position of the x-ray beamlines. This paper compares the results of two successive resurveys of the APS accelerator components performed in 1995 and 1998.

Friedsam, H.; Penicka, M.; Error, J.

2000-03-16T23:59:59.000Z

402

Long-term stability of the APS storage ring  

SciTech Connect

The Advanced Photon Source (APS), a third-generation synchrotrons light source, was commissioned in 1995 at Argonne ''National Laboratory and has been fully-operational for beamline users since 1997. The APS storage ring can accommodate up to 68 user beamlines; about 70% of the available beamlines are currently in use by various collaborative access teams (CATS). The 7-GeV synchrotrons light source produces light in the soft to hard x-ray range that is used for research in such areas as x-ray instrumentation; material, chemical and atomic sciences; biology; and geo/soil/ environmental sciences. For the successful operation of an x-ray light source such as the Advanced Photon Source, the long-term stability of the concrete floor supporting the beam components and user beamlines is crucial. Settlements impact the orbit and location of the x-ray source points as well as the position of the x-ray beamlines. This paper compares the results of two successive resurveys of the APS accelerator components performed in 1995 and 1998.

Friedsam, H.; Penicka, M.; Error, J.

1999-10-26T23:59:59.000Z

403

Design of the NSLS-II Linac Front End Test Stand  

SciTech Connect

The NSLS-II operational parameters place very stringent requirements on the injection system. Among these are the charge per bunch train at low emittance that is required from the linac along with the uniformity of the charge per bunch along the train. The NSLS-II linac is a 200 MeV linac produced by Research Instruments Gmbh. Part of the strategy for understanding to operation of the injectors is to test the front end of the linac prior to its installation in the facility. The linac front end consists of a 100 kV electron gun, 500 MHz subharmonic prebuncher, focusing solenoids and a suite of diagnostics. The diagnostics in the front end need to be supplemented with an additional suite of diagnostics to fully characterize the beam. In this paper we discuss the design of a test stand to measure the various properties of the beam generated from this section. In particular, the test stand will measure the charge, transverse emittance, energy, energy spread, and bunching performance of the linac front end under all operating conditions of the front end.

Fliller III, R.; Johanson, M.; Lucas, M.; Rose, J.; Shaftan, T.

2011-03-28T23:59:59.000Z

404

Coherent infrared imaging camera (CIRIC)  

SciTech Connect

New developments in 2-D, wide-bandwidth HgCdTe (MCT) and GaAs quantum-well infrared photodetectors (QWIP) coupled with Monolithic Microwave Integrated Circuit (MMIC) technology are now making focal plane array coherent infrared (IR) cameras viable. Unlike conventional IR cameras which provide only thermal data about a scene or target, a coherent camera based on optical heterodyne interferometry will also provide spectral and range information. Each pixel of the camera, consisting of a single photo-sensitive heterodyne mixer followed by an intermediate frequency amplifier and illuminated by a separate local oscillator beam, constitutes a complete optical heterodyne receiver. Applications of coherent IR cameras are numerous and include target surveillance, range detection, chemical plume evolution, monitoring stack plume emissions, and wind shear detection.

Hutchinson, D.P.; Simpson, M.L.; Bennett, C.A.; Richards, R.K.; Emery, M.S.; Crutcher, R.I.; Sitter, D.N. Jr.; Wachter, E.A.; Huston, M.A.

1995-07-01T23:59:59.000Z

405

Conceptual Design for Replacement of the DTL and CCL with Superconducting RF Cavities in the Spallation Neutron Source Linac  

Science Conference Proceedings (OSTI)

The Spallation Neutron Source Linac utilizes normal conducting RF cavities in the low energy section from 2.5 MeV to 186 MeV. Six Drift Tube Linac (DTL) structures accelerate the beam to 87 MeV, and four Coupled Cavity Linac (CCL) structures provide further acceleration to 186 MeV. The remainder of the Linac is comprised of 81 superconducting cavities packaged in 23 cryomodules to provide final beam energy of approximately 1 GeV. The superconducting Linac has proven to be substantially more reliable than the normal conducting Linac despite the greater number of stations and the complexity associated with the cryogenic plant and distribution. A conceptual design has been initiated on a replacement of the DTL and CCL with superconducting RF cavities. The motivation, constraints, and conceptual design are presented.

Champion, Mark S [ORNL; Doleans, Marc [ORNL; Kim, Sang-Ho [ORNL

2013-01-01T23:59:59.000Z

406

Electron Bunch Profile Reconstruction in the Few fs Regime using Coherent Smith-Purcell Radiation  

SciTech Connect

Advanced accelerators for fourth generation light sources based on high brightness linacs or laser-driven wakefield accelerators will operate with intense, highly relativistic electron bunches that are only a few fs long. Diagnostic techniques for the determination of temporal profile of such bunches are required to be non invasive, single shot, economic and with the required resolution in the fs regime. The use of a radiative process such as coherent Smith-Purcell radiation (SPR), is particularly promising with this respect. In this technique the beam is made to radiate a small amount of electromagnetic radiation and the temporal profile is reconstructed from the measured spectral distribution of the radiation. We summarise the advantages of SPR and present the design parameters and preliminary results of the experiments at the FACET facility at SLAC. We also discuss a new approach to the problem of the recovery of the 'missing phase', which is essential for the accurate reconstruction of the temporal bunch profile.

Bartolini, R.; /Oxford U., JAI /Diamond Light Source /SLAC; Clarke, C.; /SLAC; Delerue, N; /Oxford U., JAI /Diamond Light Source /SLAC; Doucas, G; Reichold, A; /Oxford U., JAI

2012-06-20T23:59:59.000Z

407

Preliminary Analysis on Linac Oscillation Data LI05-19 and Wake Field Energy Loss in FACET Commissioning 2012  

SciTech Connect

In this note, preliminary analysis on linac ocsillation data in FACET linac LI05-09 plus LI11-19 is presented. Several quadrupoles are identified to possibly have different strength, compared with their designed strength in the MAD optics model. The beam energy loss due to longitudinal wake fields in the S-band linac is also analytically calculated, also by LITRACK numerical simulations.

Sun, Yipeng; /SLAC

2012-07-23T23:59:59.000Z

408

Unfolding linac photon spectra and incident electron energies from experimental transmission data, with direct independent validation  

SciTech Connect

Purpose: In a recent computational study, an improved physics-based approach was proposed for unfolding linac photon spectra and incident electron energies from transmission data. In this approach, energy differentiation is improved by simultaneously using transmission data for multiple attenuators and detectors, and the unfolding robustness is improved by using a four-parameter functional form to describe the photon spectrum. The purpose of the current study is to validate this approach experimentally, and to demonstrate its application on a typical clinical linac. Methods: The validation makes use of the recent transmission measurements performed on the Vickers research linac of National Research Council Canada. For this linac, the photon spectra were previously measured using a NaI detector, and the incident electron parameters are independently known. The transmission data are for eight beams in the range 10-30 MV using thick Be, Al and Pb bremsstrahlung targets. To demonstrate the approach on a typical clinical linac, new measurements are performed on an Elekta Precise linac for 6, 10 and 25 MV beams. The different experimental setups are modeled using EGSnrc, with the newly added photonuclear attenuation included. Results: For the validation on the research linac, the 95% confidence bounds of the unfolded spectra fall within the noise of the NaI data. The unfolded spectra agree with the EGSnrc spectra (calculated using independently known electron parameters) with RMS energy fluence deviations of 4.5%. The accuracy of unfolding the incident electron energy is shown to be {approx}3%. A transmission cutoff of only 10% is suitable for accurate unfolding, provided that the other components of the proposed approach are implemented. For the demonstration on a clinical linac, the unfolded incident electron energies and their 68% confidence bounds for the 6, 10 and 25 MV beams are 6.1 {+-} 0.1, 9.3 {+-} 0.1, and 19.3 {+-} 0.2 MeV, respectively. The unfolded spectra for the clinical linac agree with the EGSnrc spectra (calculated using the unfolded electron energies) with RMS energy fluence deviations of 3.7%. The corresponding measured and EGSnrc-calculated transmission data agree within 1.5%, where the typical transmission measurement uncertainty on the clinical linac is 0.4% (not including the uncertainties on the incident electron parameters). Conclusions: The approach proposed in an earlier study for unfolding photon spectra and incident electron energies from transmission data is accurate and practical for clinical use.

Ali, E. S. M.; McEwen, M. R.; Rogers, D. W. O. [Carleton Laboratory for Radiotherapy Physics, Department of Physics, Carleton University, 1125 Colonel By Drive, Ottawa, Ontario K1S 5B6 (Canada); Ionizing Radiation Standards, Institute for National Measurement Standards, National Research Council, M-35 Montreal Road, Ottawa, Ontario K1A 0R5 (Canada); Carleton Laboratory for Radiotherapy Physics, Department of Physics, Carleton University, 1125 Colonel By Drive, Ottawa, Ontario K1S 5B6 (Canada)

2012-11-15T23:59:59.000Z

409

Coherent scattering from a free gas  

E-Print Network (OSTI)

We investigate decoherence in atom interferometry due to scattering from a background gas and show that the supposition that residual coherence is due to near-forward scattering is incorrect. In fact, the coherent part is ...

Sanders, Scott N.

410

Modeling coherence in ESOL learner texts  

Science Conference Proceedings (OSTI)

To date, few attempts have been made to develop new methods and validate existing ones for automatic evaluation of discourse coherence in the noisy domain of learner texts. We present the first systematic analysis of several methods for assessing coherence ...

Helen Yannakoudakis; Ted Briscoe

2012-06-01T23:59:59.000Z

411

Design features of high-intensity medium-energy superconducting heavy-ion Linac.  

DOE Green Energy (OSTI)

The proposed Rare Isotope Accelerator (RIA) requires the construction of a cw 1.4 GV superconducting (SC) linac that is capable of producing 400 kW beams of all ions from protons at 900 MeV to uranium at 400 MeV/u. The design of such a linac was outlined at the previous Linac conference. This linac will accelerate multiple-charge-states (multi-q) of the heaviest ion beams, for which the beam current is limited by ion-source performance. The linac consists of two different types of accelerating and focusing lattice: for uranium below {approx}85 MeV/u the focusing is provided by SC solenoids installed in cryostats with the SC resonators while in the high-beta section the focusing elements are located outside of the cryostats. A detailed design has been developed for the focusing-accelerating lattice of the linac. Beam dynamics studies have been performed with the goal of optimization of the linac structure in order to reduce a possible effective emittance growth of the multi-q uranium beam. A wide tuning range of the accelerating and focusing fields is required for acceleration of the variety of ions with different charge-to-mass ratios to the highest possible energy in single charge state mode. The focusing must be retuned for different ion masses to avoid resonance coupling between the transverse and longitudinal motions. Any visible impact of this coupling on the formation of beam halo must be avoided due to the high beam power.

Ostroumov, P. N.

2002-09-20T23:59:59.000Z

412

Status of the plasma generator of the superconducting proton linac  

SciTech Connect

In the framework of the superconducting proton linac (SPL) study at CERN, a new non-cesiated H{sup -} plasma generator driven by an external 2 MHz RF antenna has been developed and successfully operated at repetition rates of 50 Hz, pulse lengths of up to 3 ms, and average RF powers of up to 3 kW. The coupling efficiency of RF power into the plasma was determined by the cooling water temperatures and the analysis of the RF forward and reflected power and the antenna current and amounts to 50%-60%. The plasma resistance increases between 10 kW and 40 kW RF power from about 0.45 {Omega} to 0.65 {Omega}. Measurements of RF power dissipated in the ferrites and the magnets on a test bench show a 5-fold decrease of the power losses for the magnets when they are contained in a Cu box, thus validating the strategy of shielding the magnets with a high electrical conductivity material. An air cooling system was installed in the SPL plasma generator to control the temperatures of the ferrites despite hysteresis losses of several Watts.

Kronberger, M.; Lettry, J.; Paoluzzi, M.; Pereira, H.; Arias, J. Sanchez; Schmitzer, C.; Scrivens, R. [European Organisation for Nuclear Research, CERN, 1211 Geneva 23 (Switzerland); Faircloth, D. [STFC, Rutherford Appleton Laboratory, Chilton, Oxon OX11 0QX (United Kingdom)

2012-02-15T23:59:59.000Z

413

Proton Driver Linac for the Frankfurt Neutron Source  

SciTech Connect

The Frankfurt Neutron Source at the Stern-Gerlach-Zentrum (FRANZ) will deliver high neutron fluxes in the energy range of 1 to 500 keV. The Activation Mode provides a high averaged neutron flux created by a cw proton beam of up to 5 mA, while in the Compressor Mode intense neutron pulses of 1 ns length are formed with a repetition rate of up to 250 kHz. The Compressor Mode is well-suited for energy-dependent neutron capture measurements using the Time-of-Flight method in combination with a 4{pi} BaF{sub 2} detector array. The design of the proton driver linac for both operation modes is presented. This includes the volume type ion source, the ExB chopper located in the low energy section, the RFQ-IH combination for beam acceleration and the bunch compressor. Finally, the neutron production at the lithium-7 target and the resulting energy spectrum is described.

Wiesner, C.; Chau, L. P.; Dinter, H.; Droba, M.; Heilmann, M.; Joshi, N.; Maeder, D.; Metz, A.; Meusel, O.; Noll, D.; Podlech, H.; Ratzinger, U.; Reichau, H.; Schempp, A.; Schmidt, S.; Schweizer, W.; Volk, K.; Wagner, C. [Institut fuer Angewandte Physik, Goethe-Universitaet, Max-von-Laue-Str. 1, 60438 Frankfurt/Main (Germany); Reifarth, R. [Institut fuer Angewandte Physik, Goethe-Universitaet, Max-von-Laue-Str. 1, 60438 Frankfurt/Main (Germany); GSI Helmholtzzentrum fuer Schwerionenforschung, Planckstr. 1, 64291 Darmstadt (Germany); Mueller, I.

2010-08-04T23:59:59.000Z

414

LANSCE Drift Tube Linac Water Control System Refurbishment  

Science Conference Proceedings (OSTI)

There are several refurbishment projects underway at the Los Alamos National Laboratory LANSCE linear accelerator. Systems involved are: RF, water cooling, networks, diagnostics, timing, controls, etc. The Drift Tube Linac (DTL) portion of the accelerator consists of four DTL tanks, each with three independent water control systems. The systems are about 40 years old, use outdated and non-replaceable equipment and NIM bin control modules, are beyond their design life and provide unstable temperature control. Insufficient instrumentation and documentation further complicate efforts at maintaining system performance. Detailed design of the replacement cooling systems is currently in progress. Previous design experience on the SNS accelerator water cooling systems will be leveraged, see the SNS DTL FDR. Plans call for replacement of water piping, manifolds, pumps, valves, mix tanks, instrumentation (flow, pressure and temperature) and control system hardware and software. This presentation will focus on the control system design with specific attention on planned use of the National Instruments Compact RIO platform with the Experimental Physics and Industrial Control system (EPICS) software toolkit.

Marroquin, Pilar S. [Los Alamos National Laboratory

2011-01-01T23:59:59.000Z

415

APS beamline standard components handbook, Version 1. 3  

SciTech Connect

This Handbook in its current version (1.3) contains descriptions, specifications, and preliminary engineering design drawings for many of the standard components. The design status and schedules have been provided wherever possible. In the near future, the APS plans to update engineering drawings of identified standard beamline components and complete the Handbook. The completed version of this Handbook will become available to both the CATs and potential vendors. Use of standard components should result in major cost reductions for CATs in the areas of beamline design and construction.

Hahn, U.; Shu, D.; Kuzay, T.M.

1993-02-01T23:59:59.000Z

416

Initial diagnostics commissioning results for the Advanced Photon Source (APS)  

Science Conference Proceedings (OSTI)

Principal diagnostics systems have been installed and nearly all have been commissioned on the subsystems of the Advanced Photon Source (APS) facility. Data have been obtained on beam position, beam profile, current, beam loss rate, and synchrotron radiation monitors on both injector rings and most recently the main 7-GeV storage ring. Results for the 150- to 450-MeV electron beams in the accumulator ring, up to 7 GeV in the injector synchrotron, and 4.5 to 7 GeV in the SR will be presented.

Lumpkin, A.; Patterson, D.; Wang, X. [and others

1995-07-01T23:59:59.000Z

417

Advanced Photon Source (APS) Colloquium Series Video Collection from 2004  

DOE Data Explorer (OSTI)

The Advanced Photon Source (APS) at Argonne National Laboratory provides this nation's (in fact, this hemisphere's) most brilliant x-ray beams for research in almost all scientific disciplines. These x-rays allow scientists to pursue new knowledge about the structure and function of materials in the center of the Earth and in outer space, and all points in between. The monthly APS Colloquium series brings distinguished scientists in all disciplines to lecture on topics of general interest. Some of these presentations are available as integrated video and slides. The 2004 multimedia presentations available on this website are: Seeing Stripes: Competition and Complexity in High-Temperature Superconductors, John Tranquada The Interface of Art and Science in the Museum: Disclosing a 4th Dimension of Art Preservation and Connoisseurship, Franceska Casadio, Art Institute of Chicago Microscopy with slow electrons: from LEEM to XPEEM, Ernst Bauer, Arizona State University The Hafnium saga: Can radioactive decay be usefully controlled, Dr. John Schiffer The Abnormal Normal State of the High-Tc Superconductors... or Undressing Electrons with Nearly a Million Gauss, Greg Boebinger, National High Magnetic Field Laboratory The major steps in the development of the dynamical theory of X-ray diffraction: from early days to modern times, Andre Authier, Universite Pierre et Marie Curie, Paris The Theory of High-Tc Superconductivity in Layered Cuprates, Alexei Abrikosov.

418

Advanced Photon Source (APS) Colloquium Series Video Collection from 2006  

DOE Data Explorer (OSTI)

The Advanced Photon Source (APS) at Argonne National Laboratory invites scientists from nearly all disciplines to present their research to the general public in the monthly APS Colloquia. Some of these presentations are available as integrated video and slides. The 2006 multimedia presentations available on this website are: 1) Quantum Control of Light: From Slow Light and Fast Cars to Nuclear Gamma Ray Spectroscopy, Marlan O. Scully, Texas A&M University and Princeton University; 2) Nanotubes, Fullerenes, and the Beijing SRF, Ziyu Wu, Beijing SRF; 3) The Equation That Couldn't Be Solved, Mario Livio, Hubble Space Telescope Science Institute; 4) Functional Complexity in Soft Electronic Matter, Alan Bishop; 5) Data Driven Discovery in Imaging and Spectroscopy, Krishna Rajan, Iowa State University; 6) Extraterrestrial Materials: The Role of Synchrotron Radiation Analyses in the Study of Our Solar System, Stephen R. Sutton, University of Chicago; 7) Boosting the Light: X-ray Physics in Confinement, Ralf Rhlsberger, HASYLAB/DESY; 8) Seeing the Real Atomic Correlation in Matter, Takeshi Egami, University of Tennessee and ORNL.

419

Advanced Photon Source (APS) Colloquium Series Video Collection from 2007  

DOE Data Explorer (OSTI)

The Advanced Photon Source (APS) at Argonne National Laboratory provides this nation's most brilliant x-ray beams for research, enabling scientists to pursue new knowledge across many scientific disciplines. The monthly APS Colloquium series brings these distinguished scientists to lecture on topics of general interest. Some of these presentations are available as integrated video and slides. The 2007 multimedia presentations available on this website are: 1) Shedding Synchrotron Light on a Puzzle of Glasses, Aleksandr Chumakov; 2) The Phase Problem: Related Computational Challenges, Veit Elser, Cornell University; 3) The Quantum Information Revolution: 101 Uses for Schodinger's Cat, Paul G. Kwait, University of Illinois, Urbana-Champaign; 4) High-Resolution Spectroscopy with the Chandra X-ray Observatory, Claude R Canizares, MIT; 5) Photonic Crystals from Order to Disorder, Steven G. Johnson, Assist. Professor, Applied Mathematics, MIT; 6) Light's Darkness, Miles Padgett, University of Glasgow; 7) X-rays at Solid-Liquid Surfaces, Helmut Dosch, Max Planck Institute for Metals Research; 8) Synchrotron Probes of Emergent Electronic States of Matter in Solids, J. W. Allen, University of Michigan; 9) The Whys and How of Ultrafast X-ray Science, Jerome Hastings, SLAC.

420

Advanced Photon Source (APS) Colloquium Series Video Collection from 2005  

DOE Data Explorer (OSTI)

The Advanced Photon Source (APS) at Argonne National Laboratory is a DOE National Scientific User Facility providing x-ray beams for research in almost all scientific disciplines. These x-rays allow scientists to pursue new knowledge about the structure and function of materials in the center of the Earth and in outer space, and all points in between. The monthly APS Colloquium series brings distinguished scientists in all disciplines to lecture on topics of general interest. Some of these presentations are available as integrated video and slides. The 2005 multimedia presentations available on this website are: 1) The Swiss Light Source, J. Friso van der Veen, Paul Scherrer Institut, Villigen and ETH-Zurich; 2) The Silicon Route to a New Kilogram, Peter Becker, Physicalisch-Technische Bundesanstalt; 3) Metal Cycling by Bacteria: Moving Electrons Around, Ken Nealson, USC; 4) The Structure of Liquid Surfaces, Peter S. Pershan; 5) Science and Engineering of an Operational Tsunami Forecasting System, Frank Gonzalez, NOAA; 6) Glass Formation by a Nucleation and Growth Process as in a First-order Transition, John W. Cahn, NIST; 7) Biomedical Applications of Microprobe Analysis, Peter Ingram, Duke University Medical Center.

Note: This page contains sample records for the topic "aps linac coherent" from the National Library of EnergyBeta (NLEBeta).
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421

Advanced Photon Source (APS) Colloquium Series Video Collection from 2009  

DOE Data Explorer (OSTI)

The Advanced Photon Source (APS) at Argonne National Laboratory enables scientists to pursue new knowledge about the structure and function of materials in the center of the Earth and in outer space, and all points in between. The monthly APS Colloquium series brings distinguished scientists in all disciplines to lecture on topics of general interest. Some of these presentations are available as integrated video and slides. The 2009 multimedia presentations available on this website are: 1) Imaging Nano Porous Gold with 2 and 3 Dimensions, David C. Dunand, Northwestern University; 2) Fast Crystals and Strong Glasses, David Weitz, Harvard University; 3) Physical Principles of Skeletal Minerals Revealed with Spectromicroscopy, Pupa Gilbert, University of Wisconsin-Madison; 4) MBE Growth of Ferromagnetic Metal/Compound Semiconductor Heterostructures for Spintronics, Chris Palmstrom, UCLA, Santa Barbara; 5) Searching for Sustainable and "Greener" Li-ion Batteries, Jean-Marie Tarascon, University of Picardie (Aimens) France; 6) Oxide Surfaces, Dr. Laurence Marks, Northwestern University; 7) Spinal Injury: Regeneration, Recovery, and a Possible New Approach, Dr. Avis Cohen, University of Maryland, Department of Biology.

422

IXS-CDT, APS Sign Memorandum of Understanding for Sector 30  

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

27th, 2003 27th, 2003 IXS-CDT, APS Sign Memorandum of Understanding for Sector 30 With strokes from four ceremonial pens, the Inelastic X-ray Scattering Collaborative Development Team (IXS-CDT) became the twenty-second research group to sign up for construction of x-ray beamlines at Argonne National Laboratory's Advanced Photon Source (APS). As the diagram below shows, only 5 of a possible 35 pairs of APS x-ray beamlines remain uncommitted. The September 15, 2003, Memorandum of Understanding signing ceremony formalized the relationship between IXS-CDT and the APS. APS staff will construct the IXS-CDT beamline at sector 30 on the APS experiment hall floor. The IXS sector aims to be the best in the world for inelastic x-ray scattering, a very important application that takes full-advantage of the

423

Advanced beam-dynamics simulation tools for the RIA driver linac,Part I: Low energy beam transport and radiofrequency quadrupole  

Science Conference Proceedings (OSTI)

Advanced Beam-Dynamics Simulation Tools for the RIA Driver Linac; Low Energy Beam Transport and Radiofrequency Quadrupole.

Wangler, Thomas P.; Crandall, Kenneth R.; Garnett, Robert W.; Gorelov, Dmitry; Ostroumov, Petr; Qiang, Ji; Ryne, Robert; York, Richard

2003-08-26T23:59:59.000Z

424

Coherent Communications, Imaging and Targeting  

SciTech Connect

Laboratory and field demonstration results obtained as part of the DARPA-sponsored Coherent Communications, Imaging and Targeting (CCIT) program are reviewed. The CCIT concept uses a Phase Conjugation Engine based on a quadrature receiver array, a hologram processor and a spatial light modulator (SLM) for high-speed, digital beam control. Progress on the enabling MEMS SLM, being developed by a consortium consisting of LLNL, academic institutions and small businesses, is presented.

Stappaerts, E; Baker, K; Gavel, D; Wilks, S; Olivier, S; Brase, J; Olivier, S; Brase, J

2003-10-03T23:59:59.000Z

425

Resonance Excitation of Longitudinal High Order Modes in Project X Linac  

SciTech Connect

Results of simulation of power loss due to excitation of longitudinal high order modes (HOMs) in the accelerating superconducting RF system of CW linac of Project X are presented. Beam structures corresponding to the various modes of Project X operation are considered: CW regime for 3 GeV physics program; pulsed mode for neutrino experiments; and pulsed regime, when Project X linac operates as a driver for Neutrino Factory/Muon Collider. Power loss and associated heat load due to resonance excitation of longitudinal HOMs are shown to be small in all modes of operation. Conclusion is made that HOM couplers can be removed from the design of superconducting RF cavities of Project X linac.

Khabiboulline, T.N.; Sukhanov, A.AUTHOR = Awida, M.; Gonin, I.; Lunin, A.AUTHOR = Solyak, N.; Yakovlev, V.; /Fermilab

2012-05-01T23:59:59.000Z

426

Beam loading compensation of traveling wave linacs through the time dependence of the rf drive  

SciTech Connect

Beam loading in traveling-wave linear accelerating structures leads to unacceptable spread of particle energies across an extended train of bunched particles due to beam-induced field and dispersion. Methods for modulating the rf power driving linacs are effective at reducing energy spread, but for general linacs do not have a clear analytic foundation. We report here methods for calculating how to modulate the rf drive in arbitrarily nonuniform traveling-wave linacs within the convective-transport (power-diffusion) model that results in no additional energy spread due to beam loading (but not dispersion). Varying group velocity, loss factor, and cell quality factor within a structure, and nonzero particle velocity, are handled.

Towne N.; Rose J.

2011-09-30T23:59:59.000Z

427

A CONCEPTUAL 3-GEV LANSCE LINAC UPGRADE FOR ENHANCED PROTON RADIOGRAPHY  

Science Conference Proceedings (OSTI)

A conceptual design of a 3-GeV linac upgrade that would enable enhanced proton radiography at the Los Alamos Neutron Science Center (LANSCE) is presented. The upgrade is based on the use of superconducting accelerating cavities to increase the present LANSCE linac output energy from 800 MeV to 3 GeV. The LANSCE linac currently provides negative hydrogen ion (H{sup -}) and proton (H{sup +}) beams to several user facilities that support Isotope Production, NNSA Stockpile Stewardship, and Basic Energy Science programs. Required changes to the front-end, the accelerating structures, and to the RF systems to meet the new performance goals, and changes to the existing beam switchyard to maintain operations for a robust user program are also described.

Garnett, Robert W [Los Alamos National Laboratory; Rybarcyk, Lawrence J. [Los Alamos National Laboratory; Merrill, Frank E. [Los Alamos National Laboratory; O'Hara, James F. [Los Alamos National Laboratory; Rees, Daniel E. [Los Alamos National Laboratory; Walstrom, Peter L. [Los Alamos National Laboratory

2012-05-14T23:59:59.000Z

428

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

SciTech Connect

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

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

2012-07-01T23:59:59.000Z

429

Measurements of H/sup 0/ and H/sup +/ ion yields during H/sup -/ acceleration in a 50-MeV linac  

DOE Green Energy (OSTI)

Unlike proton linacs where the only particles that can be transported are protons, an H/sup -/ linac can produce H/sup 0/ and protons by stripping off one or both electrons of H/sup -/ ions during acceleration. We have measured yields of these ions as a function of linac tank pressures.

Cho, Y.; Madsen, J.; Shin, S.A.; Stipp, V.

1981-01-01T23:59:59.000Z

430

2011 Annual Planning Summary for Office of Legacy Management (LM), Grand Junction (See LM APS)  

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

The ongoing and projected Environmental Assessments and Environmental Impact Statements for 2011 and 2012 within the Office of Legacy Management (LM), Grand Junction (See LM APS).

431

Table AP4. Total Expenditures for Home Appliances and Lighting by ...  

U.S. Energy Information Administration (EIA)

and Lighting Table AP4. Total Expenditures for Home Appliances and Lighting by Fuels Used, 2005 Billion Dollars U.S. Households (millions) Electricity

432

Table AP5. Average Consumption for Home Appliances and Lighting by ...  

U.S. Energy Information Administration (EIA)

Table AP5. Average Consumption for Home Appliances and Lighting by Fuels Used, 2005 Physical Units per Household U.S. Households (millions) Fuels Used

433

High-speed X-ray Full-field Imaging Applications at the APS  

Science Conference Proceedings (OSTI)

Presentation Title, High-speed X-ray Full-field Imaging Applications at the APS ... Advances in Orientation Imaging Microscopy in Transmission Electron...

434

Table AP6. Average Consumption for Home Appliances and Lighting by ...  

U.S. Energy Information Administration (EIA)

Natural Gas LPG Total Refrigerators Other Appliances and Lighting Table AP6. Average Consumption for Home Appliances and Lighting by Fuels Used, 2005

435

INCREASED UNDERSTANDING OF BEAM LOSSES FROM THE SNS LINAC PROTON EXPERIMENT  

Science Conference Proceedings (OSTI)

Beam loss is a major concern for high power hadron accelerators such as the Spallation Neutron Source (SNS). An unexpected beam loss in the SNS superconducting linac (SCL) was observed during the power ramp up and early operation. Intra-beam-stripping (IBS) loss, in which interactions between H- particles within the accelerated bunch strip the outermost electron, was recently identified as a possible cause of the beam loss. A set of experiments using proton beam acceleration in the SNS linac was conducted, which supports IBS as the primary beam loss mechanism in the SNS SCL.

Aleksandrov, Alexander V [ORNL; Shishlo, Andrei P [ORNL; Plum, Michael A [ORNL; Lebedev, Valerie [FNAL; Laface, Emanuele [ESS; Galambos, John D [ORNL

2013-01-01T23:59:59.000Z

436

AP-3-B Wholesale Power Rate Schedule | Department of Energy  

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

3-B Wholesale Power Rate Schedule 3-B Wholesale Power Rate Schedule AP-3-B Wholesale Power Rate Schedule Area: American Electric Power System: Kerr-Philpott This rate schedule shall be available to public bodies and cooperatives (any one of whom is hereinafter called the Customer) in Virginia to whom power may be scheduled pursuant to contracts between the Government, American Electric Power Service Corporation (hereinafter called the Company), PJM Interconnection LLC (hereinafter called PJM), and the Customer. This rate schedule shall be applicable to the sale at wholesale of power and accompanying energy generated at the John H. Kerr and Philpott Projects (hereinafter called the Projects) and sold under appropriate contracts between the Government and the Customer. Document Available for Download

437

AP-2-B Wholesale Power Rate Schedule | Department of Energy  

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

2-B Wholesale Power Rate Schedule 2-B Wholesale Power Rate Schedule AP-2-B Wholesale Power Rate Schedule Area: American Electric Power System: Kerr-Philpott This rate schedule shall be available to public bodies and cooperatives (any one of whom is hereinafter called the Customer) in Virginia to whom power may be transmitted pursuant to contracts between the Government, American Electric Power Service Corporation (hereinafter called the Company), the Company's Transmission Operator, currently PJM Interconnection LLC (hereinafter called PJM), and the Customer. This rate schedule shall be applicable to the sale at wholesale of power and accompanying energy generated at the John H. Kerr and Philpott Projects and sold under appropriate contracts between the Government and the Customer. Document Available for Download

438

Microsoft PowerPoint - aps2007-abstract.ppt  

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

on MSE: theory S. Scott (PPPL) J. Ko, I. Hutchinson (PSFC/MIT) H. Yuh (Nova Photonics) Poster NP8.00087 49 th Annual Meeting, DPP-APS Orlando, FL November 2007 Abstract A standard calibration technique for Motional Stark Effect (MSE) diagnostics is to compare the polarization direction of Doppler-shifted Hα emission from a diagnostic neutral beam (DNB) that is fired into a gas-filled torus to the pitch angle inferred from known toroidal and vertical fields. However, the polarization direction of Hα emission from "secondary" beam neutrals that ionize, gyrate about field lines, and then charge exchange a second time differs from the polarization direction of the primary beam neutrals and thus confuses the calibration results. We compute the ratio of secondary-to-primary H emission, I

439

Functional design criteria 241-AP-102 Flexible Receiver System  

SciTech Connect

A mixer pump was installed in the 1.07 m (42-in.) riser of the central pump pit of tank 241-AP-102 to mitigate potential fluid separation particle sedimentation by mixing the tank`s contents. The mixer pump performed this function until failure. Its removal is now necessary to meet possible tank content removal commitments or other corrective actions. The proposed removal procedure requires a flexible receiver that will provide a barrier to contamination during removal and transfer of the pump to the mixer pump storage container. This document describes the functional design criteria of the flexible receiver. These criteria include the functional and performance requirements of the flexible receiver as a barrier to contamination during normal conditions and contingencies and the instrumentation requirements.

Roblyer, S.P.

1995-02-16T23:59:59.000Z

440

AP-1-B Wholesale Power Rate Schedule | Department of Energy  

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

1-B Wholesale Power Rate Schedule 1-B Wholesale Power Rate Schedule AP-1-B Wholesale Power Rate Schedule Area: American Electric Power System: Kerr-Philpott This rate schedule shall be available to public bodies and cooperatives (any one of whom is hereinafter called the Customer) in Virginia to whom power may be transmitted and scheduled pursuant to contracts between the Government, American Electric Power Service Corporation (hereinafter called the Company), the Company's Transmission Operator, currently PJM Interconnection LLC (hereinafter called PJM), and the Customer. This rate schedule shall be applicable to the sale at wholesale of power and accompanying energy generated at the John H. Kerr and Philpott Projects and sold under appropriate contracts between the Government and the Customer.

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


441

APS User News-at-a-Glance, Issue 52  

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

2, March 3, 2009 2, March 3, 2009 CONTENTS MESSAGE FROM MURRAY SCIENCE NEWS 1. Life Sciences CAT Coaxes Four Beams from One Port, Offers New Membership Mode 2. Science & Research Highlights 3. White Paper on "Science and Technology of Future Light Sources" Online USER MATTERS 4. How Are We Doing? 5. Management Changes in the APS X-Ray Science Division 6. General and Partner User Proposal Deadlines 7. User Agreements 8. General User Program Advisory Committee Established FACILITY NEWS 9. Search to Begin for the Next Accelerator Systems Division Director 10. Users Week 2009 Update BRIEFLY NOTED -- Rate Increase at Argonne Guest House -- Deadline for the Eleventh National School on Neutron and X-ray Scattering is March 7 -- Deadline Changed for Argonne Director's Postdoctoral Fellowships

442

Does coherence enhance transport in photosynthesis?  

E-Print Network (OSTI)

Recent observations of coherence in photosynthetic complexes have led to the question of whether quantum effects can occur in vivo, not under femtosecond laser pulses but in incoherent sunlight and at steady state, and, if so, whether the coherence explains the high exciton transfer efficiency. We distinguish several types of coherence and show that although some photosynthetic pathways are partially coherent processes, photosynthesis in nature proceeds through stationary states. This distinction allows us to rule out several mechanisms of transport enhancement in sunlight. In particular, although they are crucial for understanding exciton transport, neither wavelike motion nor microscopic coherence, on their own, enhance the efficiency. By contrast, two partially coherent mechanisms---ENAQT and supertransfer---can enhance transport even in sunlight and thus constitute motifs for the optimisation of artificial sunlight harvesting. Finally, we clarify the importance of ultrafast spectroscopy in understanding i...

Kassal, Ivan; Rahimi-Keshari, Saleh

2012-01-01T23:59:59.000Z

443

Does coherence enhance transport in photosynthesis?  

E-Print Network (OSTI)

Recent observations of coherence in photosynthetic complexes have led to the question of whether quantum effects can occur in vivo, not under femtosecond laser pulses but in incoherent sunlight and at steady state, and, if so, whether the coherence explains the high exciton transfer efficiency. We distinguish several types of coherence and show that although some photosynthetic pathways are partially coherent processes, photosynthesis in nature proceeds through stationary states. This distinction allows us to rule out several mechanisms of transport enhancement in sunlight. In particular, although they are crucial for understanding exciton transport, neither wavelike motion nor microscopic coherence, on their own, enhance the efficiency. By contrast, two partially coherent mechanisms---ENAQT and supertransfer---can enhance transport even in sunlight and thus constitute motifs for the optimisation of artificial sunlight harvesting. Finally, we clarify the importance of ultrafast spectroscopy in understanding incoherent processes.

Ivan Kassal; Joel Yuen-Zhou; Saleh Rahimi-Keshari

2012-10-18T23:59:59.000Z

444

Coherence delay augmented laser beam homogenizer  

SciTech Connect

The geometrical restrictions on a laser beam homogenizer are relaxed by ug a coherence delay line to separate a coherent input beam into several components each having a path length difference equal to a multiple of the coherence length with respect to the other components. The components recombine incoherently at the output of the homogenizer, and the resultant beam has a more uniform spatial intensity suitable for microlithography and laser pantogography. Also disclosed is a variable aperture homogenizer, and a liquid filled homogenizer.

Rasmussen, Paul (Livermore, CA); Bernhardt, Anthony (Berkeley, CA)

1993-01-01T23:59:59.000Z

445

Interferometric SAR coherence classification utility assessment  

SciTech Connect

The classification utility of a dual-antenna interferometric synthetic aperture radar (IFSAR) is explored by comparison of maximum likelihood classification results for synthetic aperture radar (SAR) intensity images and IPSAR intensity and coherence images. The addition of IFSAR coherence improves the overall classification accuracy for classes of trees, water, and fields. A threshold intensity-coherence classifier is also compared to the intensity-only classification results.

Yocky, D.A.

1998-03-01T23:59:59.000Z

446

Multiple quantum coherence in HYSCORE spectra  

Science Conference Proceedings (OSTI)

The implementation of matched pulses in two-dimensional electron spin echo envelope modulation experiments results in a drastic increase in intensity of peaks representing nuclear multiple quantum coherence. For a spin system consisting of one electron spin S= 1 2 and two nuclei with spin I= 1 2 the nuclear coherence created by the sequence (?/2)???(?/2) is calculated. The transfer amplitudes between different kinds of nuclear coherences of a microwave ? pulse are given. A new matched HYSCORE pulse sequence

Lorenz Liesum; Arthur Schweiger

2001-01-01T23:59:59.000Z

447

Coherent instabilities in random lasers  

SciTech Connect

A numerical study is presented of random lasers as a function of the pumping rate above the threshold for lasing. Depending on the leakiness of the system resonances, which is typically larger in random lasers compared to conventional lasers, we observe that the stationary lasing regime becomes unstable above a second threshold. Coherent instabilities are observed as self pulsation at a single frequency of the output intensity, population inversion, as well as the atomic polarization. We find these Rabi oscillations have the same frequency everywhere in the random laser despite the fact that the field intensity strongly depends on the spatial location.

Andreasen, Jonathan; Sebbah, Patrick; Vanneste, Christian [Laboratoire de Physique de la Matiere Condensee, CNRS UMR 6622, Universite de Nice-Sophia Antipolis, Parc Valrose, F-06108, Nice Cedex 02 (France)

2011-08-15T23:59:59.000Z

448

Coherent Control of Quantum Matter  

Science Conference Proceedings (OSTI)

This talk addresses some recent work aimed at controlling the low-lying electrodynamics of quantum solids using strong field transients. The excitation of selected vibrational resonances to manipulate the many-body physics of one dimensional Mott Hubbard Insulators and to perturb competing orders in High-Tc superconductors is also covered. Finally, the speaker shows how the electrodynamics of layered superconductors can be driven through the orderparameter phase gradient, demonstrating ultrafast transistor action in a layered superconductor. Advances in the use of coherent optics, from tabletop sources to THz and x-ray free-electron lasers are also discussed.

Cavalleri, Andrea [Max Planck Institute

2011-10-05T23:59:59.000Z

449

ANL/APS/TB-54, Dose Calculations using MARS for Bremsstrahlung Beam Stops and Collimators in APS Beamline Stations  

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

4 4 DOSE CALCULATIONS USING MARS FOR BREMSSTRAHLUNG BEAM STOPS AND COLLIMATORS IN APS BEAMLINE STATIONS Jeffrey C. Dooling Accelerator Systems Division Advanced Photon Source August 2010 This work is sponsored by the US Department of Energy Office of Science The submitted manuscript has been created by UChicago Argonne, LLC, Operator of Argonne National Laboratory ("Argonne"). Argonne, a U.S. Department of Energy Office of Science laboratory, is operated under Contract No. DE-AC02-06CH11357. The U.S. Government retains for itself, and others acting on its behalf, a paid-up nonexclusive, irrevocable worldwide license in said article to reproduce, prepare derivative works, distribute copies to the public, and perform publicly and display

450

Reflective Coherent Spatial Light Modulator (RCSLM)  

Reflective Coherent Spatial Light Modulator (RCSLM) Note: The technology described above is an early stage opportunity. Licensing rights to this intellectual property may

451

Reliable-linac design for accelerator-driven subcritical reactor systems.  

Science Conference Proceedings (OSTI)

Accelerator reliability corresponding to a very low frequency of beam interrupts is an important new accelerator requirement for accelerator-driven subcritical reactor systems. In this paper we review typical accelerator-reliability requirements and discuss possible methods for meeting these goals with superconducting proton-linac technology.

Wangler, Thomas P.,

2002-01-01T23:59:59.000Z

452

On-Line Measurement and Tuning of Multi-Pass Recirculation Time in the CEBAF Linacs  

E-Print Network (OSTI)

On-Line Measurement and Tuning of Multi-Pass Recirculation Time in the CEBAF Linacs Michael, USA Abstract CEBAF is a CW, recirculating electron accelerator, us- ing on-crest RF acceleration the beam to drift off-crest with respect to the accelerating fields. Figure 1: Layout of CEBAF Accelerator

453

Rose of APS and CNM One of Four DOE Early Career Award Winners  

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

Scientists Close-In on Artificial Spider Silk Scientists Close-In on Artificial Spider Silk Ekiert Earns 2012 APSUO Franklin Award for Studies of Influenza Virus Clever Apes on WBEZ: Breaking the Fossil Record Gerig to Chair Particle Accelerator School Board A Record Run for the APS X-ray Source APS News Archives: 2012 | 2011 | 2010 | 2009 2008 | 2007 | 2006 | 2005 2004 | 2003 | 2002 | 2001 2000 Subscribe to APS News rss feed Rose of APS and CNM One of Four DOE Early Career Award Winners MAY 16, 2012 Bookmark and Share Volker Rose with the prototype high-resolution microscope at the nanoprobe beamline on APS Sector 26. Volker Rose, assistant physicist with the U.S. Department of Energy (DOE) Office of Science's Advanced Photon Source X-ray Science Division (XSD) and Center for Nanoscale Materials (CNM) at Argonne National Laboratory is

454

The Chicago Tribune sees the "wonder" in APS  

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

The Chicago Tribune sees the "wonder" in APS The Chicago Tribune sees the "wonder" in APS Clipping of Chicago Tribune Ever wonder what the editors of the Chicago Tribune think of the Advanced Photon Source (APS)? Wonder no more. True, the APS didn't make the cut as one of the "official" "7 Wonders of Chicago" in a reader-survey contest recently staged by the newspaper. (All seven finalists happen to be located within Chicago city limits.) But the APS and its technologies were deemed worthy of singling out as a wonder nonetheless in the closing two paragraphs of the September 15, 2005, story on the contest in the paper's Tempo section. "You told us about things we had never thought of," wrote Tribune senior correspondent Charles Leroux. "For instance, the Advanced Photon Source at

455

Optical coherence domain reflectometry guidewire  

DOE Patents (OSTI)

A guidewire with optical sensing capabilities is based on a multiplexed optical coherence domain reflectometer (OCDR), which allows it to sense location, thickness, and structure of the arterial walls or other intra-cavity regions as it travels through the body during minimally invasive medical procedures. This information will be used both to direct the guidewire through the body by detecting vascular junctions and to evaluate the nearby tissue. The guidewire contains multiple optical fibers which couple light from the proximal to distal end. Light from the fibers at the distal end of the guidewire is directed onto interior cavity walls via small diameter optics such as gradient index lenses and mirrored corner cubes. Both forward viewing and side viewing fibers can be included. The light reflected or scattered from the cavity walls is then collected by the fibers, which are multiplexed at the proximal end to the sample arm of an optical low coherence reflectometer. The guidewire can also be used in nonmedical applications.

Colston, Billy W. (Livermore, CA); Everett, Matthew (Pleasanton, CA); Da Silva, Luiz B. (Danville, CA); Matthews, Dennis (Moss Beach, CA)

2001-01-01T23:59:59.000Z

456

Novel linac structures for low-beta ions and for muons  

SciTech Connect

Development of two innovative linacs is discussed. (1) High-efficiency normal-conducting accelerating structures for ions with beam velocities in the range of a few percent of the speed of light. Two existing accelerator technologies - the H-mode resonator cavities and transverse beam focusing by permanent-magnet quadrupoles (PMQ) - are merged to create efficient structures for light-ion beams of considerable currents. The inter-digital H-mode accelerator with PMQ focusing (IH-PMQ) has the shunt impedance 10-20 times higher than the standard drift-tube linac. Results of the combined 3-D modeling for an IH-PMQ accelerator tank - electromagnetic computations, beam-dynamics simulations, and thermal-stress analysis - are presented. H-PMQ structures following a short RFQ accelerator can be used in the front end of ion linacs or in stand-alone applications like a compact mobile deuteron-beam accelerator up to a few MeV. (2) A large-acceptance high-gradient linac for accelerating low-energy muons in a strong solenoidal magnetic field. When a proton beam hits a target, many low-energy pions are produced almost isotropically, in addition to a small number of high-energy pions in the forward direction. We propose to collect and accelerate copious muons created as the low-energy pions decay. The acceleration should bring muons to a kinetic energy of {approx}200 MeV in about 10 m, where both an ionization cooling of the muon beam and its further acceleration in a superconducting linac become feasible. One potential solution is a normal-conducting linac consisting of independently fed O-mode RF cavities with wide apertures closed by thin metal windows or grids. The guiding magnetic field is provided by external superconducting solenoids. The cavity choice, overall linac design considerations, and simulation results of muon acceleration are presented. Potential applications range from basic research to homeland defense to industry and medicine.

Kurennoy, Sergey S [Los Alamos National Laboratory

2010-01-01T23:59:59.000Z

457

APS Alternative Fuel (Hydrogen) Pilot Plant - Monitoring System Report  

DOE Green Energy (OSTI)

The U.S. Department of Energys (DOEs) Advanced Vehicle Testing Activity (AVTA), along with Electric Transportation Applications and Arizona Pubic Service (APS), is monitoring the operations of the APS Alternative Fuel (Hydrogen) Pilot Plant to determine the costs to produce hydrogen fuels (including 100% hydrogen as well as hydrogen and compressed natural gas blends) for use by fleets and other operators of advanced-technology vehicles. The hydrogen fuel cost data will be used as benchmark data by technology modelers as well as research and development programs. The Pilot Plant can produce up to 18 kilograms (kg) of hydrogen per day by electrolysis. It can store up to 155 kg of hydrogen at various pressures up to 6,000 psi. The dispenser island can fuel vehicles with 100% hydrogen at 5,000 psi and with blends of hydrogen and compressed natural gas at 3,600 psi. The monitoring system was designed to track hydrogen delivery to each of the three storage areas and to monitor the use of electricity on all major equipment in the Pilot Plant, including the fuel dispenser island. In addition, water used for the electrolysis process is monitored to allow calculation of the total cost of plant operations and plant efficiencies. The monitoring system at the Pilot Plant will include about 100 sensors when complete (50 are installed to date), allowing for analysis of component, subsystems, and plant-level costs. The monitoring software is mostly off-the-shelve, with a custom interface. The majority of the sensors input to the Programmable Automation Controller as 4- to 20-mA analog signals. The plant can be monitored over of the Internet, but the control functions are restricted to the control room equipment. Using the APS general service plan E32 electric rate of 2.105 cents per kWh, during a recent eight-month period when 1,200 kg of hydrogen was produced and the plant capacity factor was 26%, the electricity cost to produce one kg of hydrogen was $3.43. However, the plant capacity factor has been increasing, with a recent one-month high of 49%. If a plant capacity factor of 70% can be achieved with the present equipment, the cost of electricity would drop to $2.39 per kg of hydrogen. In this report, the power conversion (76.7%), cell stack (53.1%), and reverse osmosis system (7.14%) efficiencies are also calculated, as is the water cost per kg of hydrogen produced ($0.10 per kg). The monitoring system has identified several areas having the potential to lower costs, including using an reverse osmosis system with a higher efficiency, improving the electrolysis power conversion efficiency, and using air cooling to replace some or all chiller cooling. These activities are managed by the Idaho National Laboratory for the AVTA, which is part of DOEs FreedomCAR and Vehicle Technologies Program.

James Francfort; Dimitri Hochard

2005-07-01T23:59:59.000Z

458

Coherent Diffraction Imaging of Strain on the Nanoscale  

Science Conference Proceedings (OSTI)

Using the Advanced Photon Source (APS) at Argonne National Laboratory we have developed measurement methods and computational algorithms to produce...

459

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

460

INJECTORS H. Hayano and M. Ross, Chairmen Presentations H. Hayano, "Linac Beam Stability"  

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

2 2 INJECTORS H. Hayano and M. Ross, Chairmen Presentations H. Hayano, "Linac Beam Stability" S. Takeda, "Injector Linac Performance" S. Kashiwagi, "ECS Performance" K. Kubo, "Lattice Diagnostic (Linear Optics and Beta-Match)" T. Naito, "Performance of SR Monitor" . . . H. Hayano, "Performance of Alignment Method" J. Urakawa, "Summary of Ring Circumference Issue (Including Wiggler Issue)" N. Terunuma, "Summary of Vacuum Chamber Design Including Ring Impedance" T. Okugi, "Performance of Orbit Measurement" J. Urakawa, "Summary of Emittance Tuning" T. Raubenheimer, "Parameters - Combined Session" D. Yeremian, "Bunching Stability" J. Turner, "Injector Linac Performance"

Note: This page contains sample records for the topic "aps linac coherent" 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 coherence model based on syntactic patterns  

Science Conference Proceedings (OSTI)

We introduce a model of coherence which captures the intentional discourse structure in text. Our work is based on the hypothesis that syntax provides a proxy for the communicative goal of a sentence and therefore the sequence of sentences in a coherent ...

Annie Louis; Ani Nenkova

2012-07-01T23:59:59.000Z

462

Tandem Differential Mobility Analyzer/Aerodynamic Particle Sizer (APS) Handbook  

SciTech Connect

The tandem differential mobility analyzer (TDMA) is a single instrument that cycles through a series of complementary measurements of the physical properties of size-resolved submicron particles. In 2008, the TDMA was augmented through the addition of an aerodynamic particle sizer (APS), which extends the upper limit of the measured size distribution into the supermicron range. These two instruments are operated in parallel, but because they are controlled by a common computer and because the size distributions measured by the two are integrated in the produced datastreams, they are described together here. Throughout the day, the TDMA sequentially measures submicron aerosol size distributions and size-resolved hygroscopic growth distributions. More specifically, the instrument is operated as a scanning DMA to measure size distributions and as a TDMA to measure size-resolved hygroscopicity. A typical measurement sequence requires roughly 45 minutes. Each morning additional measurements are made of the relative humidity (RH) dependent hygroscopicity and temperature-dependent volatility of size-resolved particles. When the outside temperature and RH are within acceptable ranges, the hydration state of size-resolved particles is also characterized. The measured aerosol distributions complement the array of aerosol instruments in the Aerosol Observing System (AOS) and provide additional details of the light-scattering and cloud-nucleating characteristics of the aerosol.

Collins, D

2010-06-18T23:59:59.000Z

463

Decision Support Facility for the APS Control System  

E-Print Network (OSTI)

The Advanced Photon Source is now in its fifth year of routine beam production. The EPICS-based [1] control system has entered the phase in its life cycle where new control algorithms must be implemented under increasingly stringent operational and reliability requirements. The sheer volume of the control system (~270,000 records, ~145 VME-based input-output controllers (IOCs), and ~7,000,000 lines of EPICS ASCII configuration code), presents a daunting challenge for code maintenance. The present work describes a relational database that provides an integrated view of the interacting components of the entire APS control system, including the IOC low-level logic, the physical wiring documentation, and high-level client applications. The database is extracted (booted) from the same operational CVS repository as that used to load the active IOCs. It provides site-wide decision support facilities to inspect and trace control flow and to identify client (e.g., user interface) programs involved at any selected poin...

Dohan, D A

2001-01-01T23:59:59.000Z

464

Investigations of silica alcogel aging using coherent light  

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

Investigations of silica alcogel aging using coherent light Title Investigations of silica alcogel aging using coherent light Publication Type Journal Article Year of Publication...

465

Laser Seeding Yields High-Power Coherent Terahertz Radiation  

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

Laser Seeding Yields High-Power Coherent Terahertz Radiation Print Researchers at Berkeley Lab have been exploring the ways coherent synchrotron radiation (CSR) is generated in...

466

Laser Seeding Yields High-Power Coherent Terahertz Radiation  

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

Power Coherent Terahertz Radiation Laser Seeding Yields High-Power Coherent Terahertz Radiation Print Wednesday, 25 April 2007 00:00 Researchers at Berkeley Lab have been exploring...

467

A GAP package for computation with coherent configurations  

Science Conference Proceedings (OSTI)

We present a GAP package for computing with Schurian coherent configurations and their representations. Keywords: GAP, GRAPE, association scheme, centralizer ring, coherent configuration, permutation group, sage, semidefinite programming

Dmitrii V. Pasechnik; Keshav Kini

2010-09-01T23:59:59.000Z

468

APS-based Technologies Garner Three R&D-100 Awards  

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

R&D logo APS-based Technologies Garner Three R&D-100 Awards R&D logo APS-based Technologies Garner Three R&D-100 Awards Three technologies developed for use at the U.S. Department of Energy's Advanced Photon Source (APS) at Argonne National Laboratory have won R&D 100 awards. The awards are given annually by R&D Magazine to the 100 most significant technical products of the year. X-RAY SCANNING MICROPROBE The hard x-ray scanning microprobe is a noninvasive tool that provides spatial resolution previously unavailable with x-rays, thereby expanding the potential of traditional x-ray techniques. It was developed by Barry Lai, Zhonghou Cai, Jörg Maser, Dan Legnini and Peter Ilinski of the APS Synchrotron Radiation Instrumentation Collaborative Access Team. Wenbing Yun of Lawrence Berkeley National Laboratory contributed to the technology.

469

APS/123-QED Understanding the atomic-scale contrast in Kelvin Probe Force  

E-Print Network (OSTI)

APS/123-QED Understanding the atomic-scale contrast in Kelvin Probe Force Microscopy Laurent Nony 1 are crucial to understand the atomic-scale KPFM signal. The calculations of the force #12;eld were performed

Recanati, Catherine

470

ANL/APS/TB-52, 2006 XSD Scientific Software Workshop - Survey...  

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

But NASA and NOAA have to do this all the time. The APS should consider setting up a partnership with these agencies (and others) in order to bring sufficient resources to...

471

ANL/APS/TB-51, 2006 XSD Scientific Software Workshop Report  

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

APS beamlines. * Other cited needs o Help, documentation, and support o High-speed data handling and storage o High-performance computing and remote access o Common data format...

472

Microsoft Word - SPP_Success_Story_Advantage_AP_3.30.07_FINAL...  

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

example, A&P used a benchmark report to identify stores with higher than average energy usage. Audits on those stores revealed operating practices that needed to be changed,...

473

Design Construction and Test Results of a HTS Solenoid for Energy Recovery Linac  

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

DESIGN CONSTRUCTION AND TEST RESULTS OF A HTS SOLENOID DESIGN CONSTRUCTION AND TEST RESULTS OF A HTS SOLENOID FOR ENERGY RECOVERY LINAC* R. Gupta # , M. Anerella, I. Ben-Zvi, G. Ganetis, D. Kayran, G. McIntyre, J. Muratore, S. Plate and W. Sampson, Brookhaven National Laboratory, Upton, NY, 11973 USA and M. Cole and D. Holmes, Advanced Energy Systems, Inc., Medord, NY, 11763 USA Abstract An innovative feature of the proposed Energy Recovery Linac (ERL) is the use of a solenoid made with High Temperature Superconductor (HTS) with the Superconducting RF cavity. The use of HTS allows solenoid to be placed in close proximity to the cavity and thus provides early focusing of the electron beam. In addition, cryogenic testing at ~77 K is simpler and cheaper than 4 K testing. This paper will present the

474

Optimal focusing for a linac-based hard x-ray source  

Science Conference Proceedings (OSTI)

In spite of having a small average beam current limit, a linac can have features that make it attractive as an x-ray source: high energy, ultralow emittance and energy spread, and flexible beamline optics. Unlike a storage ring, in which an (undulator) radiation source is necessarily short and positioned at an electron beam waist, in a linac the undulator can be long and the electron beam can be adjusted to have a (virtual) waist far downstream toward the x-ray target. Using a planned CEBAF beamline as an example, this paper shows that a factor of 2000 in beam current can be overcome to produce a monochromatic hard x-ray source comparable with, or even exceeding, the performance of an x-ray line at a third generation storage ring. Optimal electron beam focusing conditions for x-ray flux density and brilliance are derived, and are verified by simulations using the SRW code.

Liu, C.; Krafft, G.; Talman, R.

2011-03-28T23:59:59.000Z

475

CLIC simulations from the start of the linac to the interaction point  

E-Print Network (OSTI)

Simulations for linear colliders are traditionally performed separately for the different sub-systems, like damping ring, bunch compressor, linac, and beam delivery. The beam properties are usually passed from one sub-system to the other via bunch charge, RMS transverse emittances, RMS bunch length, average energy and RMS energy spread. It is implicitly assumed that the detailed 6D correlations in the beam distribution are not relevant for the achievable luminosity. However, it has recently been shown that those correlations can have a strong effect on the beam-beam interaction. We present first results on CLIC simulations that integrate linac, beam delivery, and beam-beam interaction. These integrated simulations also allow a better simulation of time-dependent effects, like ground perturbations and interference between several beam-based feedbacks.

Schulte, Daniel; Blair, G A; D'Amico, T E; Leros, Nicolas; Redaelli, S; Risselada, Thys; Zimmermann, Frank

2002-01-01T23:59:59.000Z

476

Cavity Design and Beam Simulations for the APS RF Gun Advanced Photon Source  

E-Print Network (OSTI)

presented an outline of the Stanford Synchrotron Radiation Light Source (SSRL), emphasizing their more. SSRL $21.OM B. NSLS $33.8M ($3M increase) C. APS $84.7M D. 4th Generation X-ray Source R&D $3.OM The SSRL and APS figures are the FY98 DOE requests. The NSLS figure is increased by $3.OM above the FY98

Kemner, Ken

477

Upgrading the Data Acquisition and Control System of the LANSCE LINAC  

SciTech Connect

Los Alamos National Laboratory LANL is in the process of upgrading the control system for the Los Alamos Neutron Science Center (LANSCE) linear accelerator. The 38 year-old data acquisition and control equipment is being replaced with COTS hardware. An overview of the current system requirements and how the National Instruments cRIO system meets these requirements will be given, as well as an update on the installation and operation of a prototype system in the LANSCE LINAC.

Baros, Dolores [Los Alamos National Laboratory

2011-01-01T23:59:59.000Z

478

New high power 200 MHz RF system for the LANSCE drift tube linac  

SciTech Connect

The Los Alamos Neutron Science Center (LANSCE) linac provides an 800 MeV direct H{sup +} proton beam, and injects H{sup {minus}} to the upgraded proton storage ring for charge accumulation for the Short Pulse Spallation Source. Accelerating these interlaced beams requires high average power from the 201.25 MHz drift tube linac (DTL) RF system. Three power amplifiers have operated at up to three Megawatts with 12% duty factor. The total number of electron power tubes in the RF amplifiers and their modulators has been reduced from fifty-two to twenty-four. The plant continues to utilize the original design of a tetrode driving a super power triode. Further increases in the linac duty factor are limited, in part, by the maximum dissipation ratings of the triodes. A description of the system modifications proposed to overcome these limitations includes new power amplifiers using low-level RF modulation for tank field control. The first high power Diacrode{reg_sign} is being delivered and a new amplifier cavity is being designed. With only eight power tubes, the new system will deliver both peak power and high duty factor, with lower mains power and cooling requirements. The remaining components needed for the new RF system will be discussed.

Lyles, J.; Friedrichs, C.; Lynch, M.

1998-12-31T23:59:59.000Z

479

Upgrade of the Drive LINAC for the AWA Facility Dielectric Two-Beam Accelerator  

SciTech Connect

We report on the design of a seven-cell, standing-wave, 1.3-GHz rf cavity and the associated beam dynamics studies for the upgrade of the drive beamline LINAC at the Argonne Wakefield Accelerator (AWA) facility. The LINAC design is a compromise between single-bunch operation (100 nC {at} 75 MeV) and minimization of the energy droop along the bunch train during bunch-train operation. The 1.3-GHz drive bunch-train target parameters are 75 MeV, 10-20-ns macropulse duration, and 16 x 60 nC microbunches; this is equivalent to a macropulse current and beam power of 80 A and 6 GW, respectively. Each LINAC structure accelerates approximately 1000 nC in 10 ns by a voltage of 11 MV at an rf power of 10 MW. Due to the short bunch-train duration desired ({approx}10 ns) and the existing frequency (1.3 GHz), compensation of the energy droop along the bunch train is difficult to accomplish by means of the two standard techniques: time-domain or frequency-domain beam loading compensation. Therefore, to minimize the energy droop, our design is based on a large stored energy rf cavity. In this paper, we present our rf cavity optimization method, detailed rf cavity design, and beam dynamics studies of the drive beamline.

Power, John; /Argonne; Conde, Manoel; /Argonne; Gai, Wei; /Argonne; Li, Zenghai; /SLAC; Mihalcea, Daniel; /Northern Illinois U.

2012-07-02T23:59:59.000Z

480

X-ray Sources by Energy Recovered Linacs and Their Needed R&D  

Science Conference Proceedings (OSTI)

In this paper we review the current state of research on energy recovered linacs as drivers for future X-ray sources. For many types of user experiments, such sources may have substantial advantages compared to the workhorse sources of the present: high energy storage rings. Energy recovered linacs need to be improved beyond present experience in both energy and average current to support this application. To build an energy recovered linac based X-ray user facility presents many interesting challenges. We present summaries on the Research and Development (R&D) topics needed for full development of such a source, including the discussion at the Future Light Sources Workshop held in Gaithersburg, Maryland on September 15- 17, 2009. A #12;rst iteration of an R&D plan is presented that is founded on the notion of building a set of succeedingly larger test accelerators exploring cathode physics, high average current injector physics, and beam recirculation and beam energy recovery at high average current. Our basic conclusion is that a reviewable design of such a source can be developed after an R&D period of #12;ve to ten years.

Benson, Stephen; Douglas, David; Dowell, David; Hernandez-Garcia, Carlos; Kayran, D; Krafft, Geoffrey; Legg, Robert; Moog, E; Obina, T; Rimmer, Robert

2011-05-01T23:59:59.000Z

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481

Beam dynamics studies in the driver LINAC pre-Stripper section of the RIA facility.  

SciTech Connect

The RIA facility driver linac consists of about 400 superconducting (SC) independently phased rf cavities. The linac is designed to accelerate simultaneously several-charge-state beams to generate as much as 400 kW of uranium beam power. The linac beam dynamics is most sensitive to the focusing and accelerating-structure parameters of the prestripper section, where the uranium beam is accelerated from 0.17 keV/u to 9.4 MeV/u. This section is designed to accept and accelerate 2 charge states (28 and 29) of uranium beam from an ECR ion source. The prestripper section must be designed to minimize the beam emittance distortion of this two-charge-state beam. In particular, the inter-cryostat spaces must be minimized and beam parameters near transitions of the accelerating and focusing lattices must be matched carefully. Several sources of possible effective emittance growth are considered in the design of the prestripper section and a tolerance budget is established. Numerical beam dynamics studies include realistic electric and magnetic 3-dimensional field distributions in the SC rf cavities and SC solenoids. Error effects in the longitudinal beam parameters are studied.

Lessner, E. S.; Ostroumov, P. N.

2003-07-10T23:59:59.000Z

482

Coherent Synoptic Disturbances in the Australian Monsoon  

Science Conference Proceedings (OSTI)

Coherent synoptic-scale weather systems within the Australian monsoon are identified and tracked in the isentropic potential vorticity (PV) field from the ECMWF Interim Reanalysis (ERA-Interim) dataset during the Southern Hemisphere summer. The ...

Gareth J. Berry; Michael J. Reeder; Christian Jakob

2012-12-01T23:59:59.000Z

483

Disentangling chat with local coherence models  

Science Conference Proceedings (OSTI)

We evaluate several popular models of local discourse coherence for domain and task generality by applying them to chat disentanglement. Using experiments on synthetic multiparty conversations, we show that most models transfer well from text to dialogue. ...

Micha Elsner; Eugene Charniak

2011-06-01T23:59:59.000Z

484

A Coherent Strategy for Qauntum Gravity  

E-Print Network (OSTI)

Affine quantum gravity, which differs notably from either string theory or loop quantum gravity, is briefly reviewed. Emphasis in this article is placed on the use of affine coherent states in this program.

John R. Klauder

2004-11-10T23:59:59.000Z

485

Managing coherence via put/get windows  

DOE Patents (OSTI)

A method and apparatus for managing coherence between two processors of a two processor node of a multi-processor computer system. Generally the present invention relates to a software algorithm that simplifies and significantly speeds the management of cache coherence in a message passing parallel computer, and to hardware apparatus that assists this cache coherence algorithm. The software algorithm uses the opening and closing of put/get windows to coordinate the activated required to achieve cache coherence. The hardware apparatus may be an extension to the hardware address decode, that creates, in the physical memory address space of the node, an area of virtual memory that (a) does not actually exist, and (b) is therefore able to respond instantly to read and write requests from the processing elements.

Blumrich, Matthias A. (Ridgefield, CT); Chen, Dong (Croton on Hudson, NY); Coteus, Paul W. (Yorktown Heights, NY); Gara, Alan G. (Mount Kisco, NY); Giampapa, Mark E. (Irvington, NY); Heidelberger, Philip (Cortlandt Manor, NY); Hoenicke, Dirk (Ossining, NY); Ohmacht, Martin (Yorktown Heights, NY)

2011-01-11T23:59:59.000Z

486

Managing coherence via put/get windows  

DOE Patents (OSTI)

A method and apparatus for managing coherence between two processors of a two processor node of a multi-processor computer system. Generally the present invention relates to a software algorithm that simplifies and significantly speeds the management of cache coherence in a message passing parallel computer, and to hardware apparatus that assists this cache coherence algorithm. The software algorithm uses the opening and closing of put/get windows to coordinate the activated required to achieve cache coherence. The hardware apparatus may be an extension to the hardware address decode, that creates, in the physical memory address space of the node, an area of virtual memory that (a) does not actually exist, and (b) is therefore able to respond instantly to read and write requests from the processing elements.

Blumrich, Matthias A. (Ridgefield, CT); Chen, Dong (Croton on Hudson, NY); Coteus, Paul W. (Yorktown Heights, NY); Gara, Alan G. (Mount Kisco, NY); Giampapa, Mark E. (Irvington, NY); Heidelberger, Philip (Cortlandt Manor, NY); Hoenicke, Dirk (Ossining, NY); Ohmacht, Martin (Yorktown Heights, NY)

2012-02-21T23:59:59.000Z

487

A toy model for Macroscopic Quantum Coherence  

E-Print Network (OSTI)

The present article deals with Macroscopic Quantum Coherence resorting only to basic quantum mechanics. A square double well is used to illustrate the Leggett-Caldeira oscillations. The effect of thermal-radiation on two-level systems is discussed to some extent. The concept of decoherence is introduced at an elementary level. Handles are deduced for the energy, temperature and time scales involved in Macroscopic Quantum Coherence.

R. Muoz-Vega; Jos-Job J. Flores-Godoy; G. Fernndez-Anaya; Encarnacin Salinas-Hernndez

2012-10-29T23:59:59.000Z

488

Insertion of coherence requests for debugging a multiprocessor  

DOE Patents (OSTI)

A method and system are disclosed to insert coherence events in a multiprocessor computer system, and to present those coherence events to the processors of the multiprocessor computer system for analysis and debugging purposes. The coherence events are inserted in the computer system by adding one or more special insert registers. By writing into the insert registers, coherence events are inserted in the multiprocessor system as if they were generated by the normal coherence protocol. Once these coherence events are processed, the processing of coherence events can continue in the normal operation mode.

Blumrich, Matthias A. (Ridgefield, CT); Salapura, Valentina (Chappaqua, NY)

2010-02-23T23:59:59.000Z

489

A Compact X-Band Linac for an X-Ray FEL  

SciTech Connect

With the growing demand for FEL light sources, cost issues are being reevaluated. To make the machines more compact, higher frequency room temperature linacs are being considered, specifically ones using C-band (5.7 GHz) rf technology, for which 40 MV/m gradients are achievable. In this paper, we show that an X-band (11.4 GHz) linac using the technology developed for NLC/GLC can provide an even lower cost solution. In particular, stable operation is possible at gradients of 100 MV/m for single bunch operation and 70 MV/m for multibunch operation. The concern, of course, is whether the stronger wakefields will lead to unacceptable emittance dilution. However, we show that the small emittances produced in a 250 MeV, low bunch charge, LCLS-like S-band injector and bunch compressor can be preserved in a multi-GeV X-band linac with reasonable alignment tolerances. The successful lasing and operation of the LCLS [1] has generated world-wide interest in X-ray FELs. The demand for access to such a light source by researchers eager to harness the capabilities of this new tool far exceeds the numbers that can be accommodated, spurring plans for additional facilities. Along with cost, spatial considerations become increasingly important for a hard X-ray machine driven by a multi-GeV linac. The consequent need for high acceleration gradient focuses attention on higher frequency normal conducting accelerator technology, rather than the superconducting technology of a soft X-ray facility like FLASH. C-band technology, such as used by Spring-8, is a popular option, capable of providing 40 MV/m. However, more than a decade of R&D toward an X-band linear collider, centered at SLAC and KEK, has demonstrated that this frequency option can extend the gradient reach to the 70-100 MV/m range. The following design and beam dynamics calculations show an X-band linac to be an attractive choice on which to base an X-ray FEL.

Adolphsen, Chris; Huang, Zhirong; Bane, Karl L.F.; Li, Zenghai; Zhou, Feng; Wang, Faya; Nantista, Christopher D.; /SLAC

2011-09-12T23:59:59.000Z

490

Coherent structures and aeolian saltation  

E-Print Network (OSTI)

Aeolian sand transport models, widely employed by coastal scientists and managers, assume temporal and spatial homogeneity within the saltation field. This research questions that assumption by demonstrating that the saltation field is event-driven, therefore indicating that the saltation field is not temporally steady. The findings from this research may explain a portion of the conclusions from previous studies that indicated inequalities between model-estimated and field-measured aeolian sand transport. The relationship between unsteadiness in a turbulent wind field and pulses in a sand transport field was investigated on a beach near Shoalhaven Heads, New South Wales, Australia. Microphone-based saltation sensors, miniphones, and thermal anemometers (both instruments constructed exclusively for this field experiment) were co-located (0.02 m separation on center) and deployed between 0.01 and 0.0225 m above the bed, and sampled at 6000 Hz. Average grain size at the field site was 0.30 mm. Five runs totaling 2050 seconds of wind and saltation data were analyzed. The continuous wavelet transform, using the Morlet wavelet base, was the principle method for analyzing the wind and saltation records. The cross continuous wavelet transform was used to analyze the wind and saltation time series concurrently. Wind, saltation, and cross events were discerned by selecting wavelet power coefficients between wavelet scales of 0.4 and 3.0 seconds and with coefficients exceeding the 95% confidence interval. Average event spacing was 6.10, 6.50, and 6.73 seconds for the wind, saltation, and cross events, respectively. The average event spacing measured in this research was compared to the empirical-based model presented by Rao, Narashimha, and Narayanan (1971). The correspondence between the model and this research strongly suggests that bursting-type coherent structures were present. The durations of average wind, saltation, and cross events were 1.87, 2.10, and 1.73 seconds, respectively. Integral time scales, calculated using normalized auto correlation and power spectral density analysis, were approximately two seconds for the wind and saltation systems. The temporal coincidence of the integral time scale estimations and the event durations for the wind and saltation system strongly suggests that wind events are driving sand transport events.

Ellis, Jean Taylor

2006-12-01T23:59:59.000Z

491

Rotation and chemical abundances of Ap/Bp stars in the open cluster NGC 6475  

E-Print Network (OSTI)

The connection between age, rotation and chemical abundance of magnetic Ap stars is poorly understood. Using open clusters, we are able to study samples of stars that are both co-eval and co-environmental. By determining rotation and chemical abundance for Ap star members of clusters with various ages, the variations of these properties as a function of age and environment can be derived. All four probable Ap star members of the open cluster NGC 6475, as well as one normal late B star, were studied using detailed spectrum synthesis of high resolution UVES-POP spectra. Probable cluster membership was confirmed for all five stars, however chemical abundance anomalies only appear to be present in spectra of three. Projected rotational velocity and chemical abundances for 21 elements ranging from C to Eu are presented for the 5 stars. In the three peculiar stars we find overabundances of Si, Cr, Mn, Fe and rare earths such as Nd, characteristic of Ap stars. The set of chemically peculiar stars show fairly homogeneous abundance tables, however notable differences exist for a few elements. There also exist appreciable differences in the v sin i and main sequence evolutionary stage of the chemically peculiar stars. This may hint at the underlying processes giving rise to the observed abundance anomalies. With this first detailed study of chemical abundances of a complete sample of magnetic Ap/Bp stars in an open cluster, we have initiated an exploration of the environmental and evolutionary influence on chemical peculiarity.

C. P. Folsom; G. A. Wade; S. Bagnulo; J. D. Landstreet

2006-12-11T23:59:59.000Z

492

APS Protocols for Handling, Storage, and Disposal of Untreated Foreign Soil  

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

APS Protocols for Handling, Storage, and Disposal of Untreated Foreign Soil APS Protocols for Handling, Storage, and Disposal of Untreated Foreign Soil and Regulated Domestic Soil Arrival of New Samples: Unpack shipping containers. Treat any ice/melted water immediately. Decontaminate any "blue ice" packets with 70% ethyl alcohol. Collect any loose soil from container and heat-treat immediately. Immediately decontaminate shipping containers. Heat-treat wooden, metal, or cardboard shipping containers (using lowest heat). Treat plastic containers and coolers with 70% ethyl alcohol. Storage of Samples: Store dry samples in the locked storage cabinet in Room 431Z021 until they can be delivered to the appropriate beamline for analysis. Label containers with origin and arrival date. Log samples into the APS Soil Inventory book maintained in 431Z021.

493

Report on the value engineering workshop on APS beamline front ends  

SciTech Connect

A formal value engineering evaluation process was developed to address the front end components of the beamlines for the Advanced Photon Source (APS). This process (described in Section 2) involved an information phase, a creative phase, a judgment phase, a development phase, and a recommendation phase. Technical experts from other national laboratories and industry were invited to a two-day Value Engineering Workshop on November 5-6, 1992. The results of this Workshop are described in Section 4. Following the Workshop, various actions by the APS staff led to the redesign of the front end components, which are presented in Sections 5 and 6. The cost benefit analysis is presented in Section 7. It is important of realize that an added benefit of the Workshop was to obtain numerous design evaluations and enhancements of the front end components by experts in the field. As the design work proceeds to Title II completion, the APS staff is including many of these suggestions.

Kuzay, T.

1993-01-01T23:59:59.000Z

494

Coherent Synchrotron Radiation: Theory and Simulations.  

Science Conference Proceedings (OSTI)

The physics of coherent synchrotron radiation (CSR) emitted by ultra-relativistic electron bunches, known since the last century, has become increasingly important with the development of high peak current free electron lasers and shorter bunch lengths in storage rings. Coherent radiation can be described as a low frequency part of the familiar synchrotron radiation in bending magnets. As this part is independent of the electron energy, the fields of different electrons of a short bunch can be in phase and the total power of the radiation will be quadratic with the number of electrons. Naturally the frequency spectrum of the longitudinal electron distribution in a bunch is of the same importance as the overall electron bunch length. The interest in the utilization of high power radiation from the terahertz and far infrared region in the field of chemical, physical and biological processes has led synchrotron radiation facilities to pay more attention to the production of coherent radiation. Several laboratories have proposed the construction of a facility wholly dedicated to terahertz production using the coherent radiation in bending magnets initiated by the longitudinal instabilities in the ring. Existing synchrotron radiation facilities also consider such a possibility among their future plans. There is a beautiful introduction to CSR in the 'ICFA Beam Dynamics Newsletter' N 35 (Editor C. Biscari). In this paper we recall the basic properties of CSR from the theory and what new effects, we can get from the precise simulations of the coherent radiation using numerical solutions of Maxwell's equations. In particular, transverse variation of the particle energy loss in a bunch, discovered in these simulations, explains the slice emittance growth in bending magnets of the bunch compressors and transverse de-coherence in undulators. CSR may play same the role as the effect of quantum fluctuations of synchrotron radiation in damping rings. It can limit the minimum achievable emittance in the synchrotron light sources for short bunches.

Novokhatski, Alexander; /SLAC

2012-03-29T23:59:59.000Z

495

Multidimensional study of a 50-MeV, 1500-rad/pulse radiographic linac, using the stagger-tuning concept  

Science Conference Proceedings (OSTI)

Stagger tuning of accelerator cavities, or blocks of cavities, can significantly enhance the achievable charge transfer through an electron linac operating in the stored-energy mode. The output bremsstrahlung flux can be increased over a conventional approach by an order of magnitude without any significant degradation in emittance growth or energy spread. Given a suitable injector, a 1500-rad/pulse, 50-MeV radiographic linac appears to be practical at a 400-MHz operating frequency; a 150-rad/pulse, 50-MeV radiographic linac will operate at 1300 MHz. A multidimensional study was made using the PARMELA code where several parameters, including beam current, synchronous phase angle, and beam radius, were varied while observing the effects on emittance and transmission efficiency.

Owen, R.K.; Fazio, M.V.; Boyd, T.J.

1983-01-01T23:59:59.000Z

496

Arsenite suppression of involucrin transcription through AP1 promoter sites in cultured human keratinocytes  

SciTech Connect

While preserving keratinocyte proliferative ability, arsenite suppresses cellular differentiation markers by preventing utilization of AP1 transcriptional