Powered by Deep Web Technologies
Note: This page contains sample records for the topic "light source lcls" 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.


1

Linac Coherent Light Source (LCLS) | U.S. DOE Office of Science...  

Office of Science (SC) Website

Syncrotron Light Source (NSLS-II) Stanford Synchrotron Radiation Light Source (SSRL) Neutron Scattering Facilities Nanoscale Science Research Centers (NSRCs) Projects...

2

LCLS Publications: Statistics  

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

LCLS Publications: Statistics LCLS Publications: Statistics Sign In Launch the Developer Dashboard SLAC National Accelerator Laboratory DOE | Stanford | SLAC | SSRL | LCLS | AD | PPA | Photon Science | PULSE | SIMES LCLS : LCLS Publications: Statistics Linac Coherent Light Source An Office of 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 LCLS News User Resources Expand User Resources Instruments Expand Instruments Proposals Publications Expand Publications Schedules Machine Status Machine FAQs Safety Organization Expand Organization Directories Expand Directories Staff Resources Contact Us All Site Content Department of Energy Page Content LCLS Publications: Statistics 2013 | 2012 | 2011 | 2010 | 2009 | Archive | Citations | Statistics

3

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)  

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

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.

4

SLAC Linac Coherent Light Source User Site  

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

5

Linac Coherent Light Source Overview  

ScienceCinema (OSTI)

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.

None

2013-05-29T23:59:59.000Z

6

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

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

of the proposed Linac Coherent Light Source (LCLS): subpicosecond time-structure, coherence and unprecedented high averagepeak brightness in the angstrom spectral region. The...

7

LCLS Heavy Met Outgassing Tests  

SciTech Connect (OSTI)

A Heavy Met that is 95% tungsten, 3% nickel and 2% iron and sintered to 100% density and is Ultra High Vacuum (UHV) compatible is proposed for use as the X-ray slit in the Front End Enclosure and the Fixed Mask for the Linac Coherent Light Source (LCLS). The Heavy Met was tested in the LLNL Vacuum Sciences and Engineering Lab (VSEL) to determine its outgassing rate and its overall compatibility with the vacuum requirements for LCLS.

Kishiyama, K. I.

2010-12-01T23:59:59.000Z

8

LCLS X-ray mirror measurements using a large aperture visible light interferometer  

SciTech Connect (OSTI)

Synchrotron or FEL X-ray mirrors are required to deliver an X-ray beam from its source to an experiment location, without contributing significantly to wave front distortion. Accurate mirror figure measurements are required prior to installation to meet this intent. This paper describes how a 300 mm aperture phasing interferometer was calibrated to <1 nm absolute accuracy and used to mount and measure 450 mm long flats for the Linear Coherent Light Source (LCLS) at Stanford Linear Accelerator Center. Measuring focus mirrors with an interferometer requires additional calibration, because high fringe density introduces systematic errors from the interferometer's imaging optics. This paper describes how these errors can be measured and corrected. The calibration approaches described here apply equally well to interferometers larger than 300 mm aperture, which are becoming more common in optics laboratories. The objective of this effort was to install LCLS flats with < 10 nm of spherical curvature, and < 2 nm rms a-sphere. The objective was met by measuring the mirrors after fabrication, coating and mounting, using a 300 mm aperture phasing interferometer calibrated to an accuracy < 1 nm. The key to calibrating the interferometer accurately was to sample the error using independent geometries that are available. The results of those measurements helped identify and reduce calibration error sources. The approach used to measure flats applies equally well to focus mirrors, provided an additional calibration is performed to measure the error introduced by fringe density. This calibration has been performed on the 300 mm aperture interferometer, and the measurement correction was evaluated for a typical focus mirror. The 300 mm aperture limitation requires stitching figure measurements together for many X-ray mirrors of interest, introducing another possible error source. Stitching is eliminated by applying the calibrations described above to larger aperture instruments. The authors are presently extending this work to a 600 mm instrument. Instruments with 900 mm aperture are now becoming available, which would accommodate the largest mirrors of interest.

McCarville, T; Soufli, R; Pivovaroff, M

2011-03-02T23:59:59.000Z

9

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

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

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

10

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

Broader source: Energy.gov [DOE]

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

11

Linac Coherent Light Source Overview | Department of Energy  

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

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

12

Racking Up the LCLS Undulator Controls  

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

Looking into the Solar Wind Looking into the Solar Wind Board of Governors Awards Tim Fister Earns Henderson Prize from University of Washington Challenge Met as APS Sends Final Chambers to LCLS A Marriage of Hardware and Hard Work APS News Archives: 2012 | 2011 | 2010 | 2009 2008 | 2007 | 2006 | 2005 2004 | 2003 | 2002 | 2001 2000 Subscribe to APS News rss feed Racking Up the LCLS Undulator Controls JUNE 19, 2008 Bookmark and Share Argonne expertise will once again be in the spotlight when the Linac Coherent Light Source (LCLS), the U.S. Department of Energy's next-generation, x-ray free-electron laser light source, enables frontier materials and biological research at the Stanford Linear Accelerator Center (SLAC) beginning in 2009. Scientists, engineers, and technicians at the Argonne Advanced Photon Source (APS), together with co-workers from other

13

Linac Coherent Light Source Undulator RF BPM System  

SciTech Connect (OSTI)

The Linac Coherent Light Source (LCLS) will be the world's first x-ray free-electron laser (FEL) when it becomes operational in 2009. The LCLS is currently in the construction phase. The beam position monitor (BPM) system planned for the LCLS undulator will incorporate a high-resolution X-band cavity BPM system described in this paper. The BPM system will provide high-resolution measurements of the electron beam trajectory on a pulse-to-pulse basis and over many shots. The X-band cavity BPM size, simple fabrication, and high resolution make it an ideal choice for LCLS beam position detection. We will discuss the system specifications, design, and prototype test results.

Lill, R.M.; Morrison, L.H.; Waldschmidt, G.J.; Walters, D.R.; /Argonne; Johnson, R.; Li, Z.; Smith, S.; Straumann, T.; /SLAC

2007-04-17T23:59:59.000Z

14

SAC - Linac Coherent Light Source  

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

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

15

SLAC Linac Coherent Light Source  

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

for the U.S. Department of Energy by Stanford University. As the world's most powerful X-ray laser, the LCLS creates unique light that can see details down to the size of atoms...

16

Challenge Met as APS Sends Final Chambers to LCLS  

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

17

Linac Coherent Light SourCe  

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

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

18

Linac Energy Management for LCLS  

SciTech Connect (OSTI)

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

19

Beam-based Feedback for the Linac Coherent Light Source  

SciTech Connect (OSTI)

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

20

Bioimaging Workshop - Linac Coherent Light Source  

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

Bioimaging Home | Project Page | Contact Us | Visitor Information User Resources LUSI Cost & Schedule Glossary News LCLS SAC LCLS FAC LCLS Science LCLS Machine FEL Resources...

Note: This page contains sample records for the topic "light source lcls" 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

The Linac Coherent Light Source is  

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

22

LCLS CDR Chapter 14  

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

4 4 4 Radiological Considerations TECHNICAL SYNOPSIS The radiation protection issues for the LCLS are normally encountered at both high-energy electron linacs and synchrotron radiation facilities. The SLAC Radiological Control Manual [1] specifies an annual total effective dose equivalent limit to workers from both internal and external radiation sources of 5 rem. In addition, SLAC maintains an administrative control level of 1.5 rem. Radiation dose criteria used in design of the LCLS radiation safety systems are those required for SLAC facilities. The integrated dose equivalent outside the surface of the FFTB shielding barriers must not exceed 1 rem in a year for normal beam operation [1]. The integrated dose equivalent to personnel working inside and around the experimental

23

The Development of the Linac Coherent Light Source RF Gun  

SciTech Connect (OSTI)

The Linac Coherent Light Source (LCLS) is the first x-ray laser user facility based upon a free electron laser (FEL) requiring extraordinary beam quality to saturate at 1.5 angstroms within a 100 meter undulator.[1] This new type of light source is using the last kilometer of the three kilometer linac at SLAC to accelerate the beam to an energy as high as 13.6 GeV and required a new electron gun and injector to produce a very bright beam for acceleration. At the outset of the project it was recognized that existing RF guns had the potential to produce the desired beam but none had demonstrated it. Therefore a new RF gun or at least the modification of an existing gun was necessary. The parameters listed in Table 1 illustrate the unique characteristics of LCLS which drive the requirements for the electron gun as given in Table 2. The gun beam quality needs to accommodate emittance growth as the beam is travels through approximately one kilometer of linac and two bunch compressors before reaching the undulator. These beam requirements were demonstrated during the recent commissioning runs of the LCLS injector and linac [2] due to the successful design, fabrication, testing and operation of the LCLS gun. The goal of this paper is to relate the technical background of how the gun was able to achieve and in some cases exceed these requirements by understanding and correcting the deficiencies of the prototype s-band RF photocathode gun, the BNL/SLAC/UCLA Gun III. This paper begins with a brief history and technical description of Gun III and the Gun Test Facility (GTF) at SLAC, and studies of the gun's RF and emittance compensation solenoid. The work at the GTF identified the gun and solenoid deficiencies, and helped to define the specifications for the LCLS gun. Section 1.1.5 describes the modeling used to compute and correct the gun RF fields and Section 1.1.6 describes the use of these fields in the electron beam simulations. The magnetic design and measurements of the emittance compensation solenoid are discussed in Section 1.1.7. The novel feature of the LCLS solenoid is the embedded quadrupole correctors. The thermo-mechanical engineering of the LCLS gun is discussed in Section 1.1.8, and the cold and hot RF tests are described in Section 1.1.9. The results of this work are summarized and concluding remarks are given in Section 1.1.10.

Dowell, David H.; Jongewaard, Erik; Lewandowski, James; Limborg-Deprey, Cecile; Li, Zenghai; Schmerge, John; Vlieks, Arnold; Wang, Juwen; Xiao, Liling; /SLAC

2008-09-24T23:59:59.000Z

24

Availability Performance and Considerations for LCLS X-Ray FEL at SLAC  

SciTech Connect (OSTI)

The Linac Coherent Light Source (LCLS) is an X-ray Free Electron Laser (FEL) facility located at the SLAC National Accelerator Laboratory. LCLS has been in operation since spring 2009, and it has completed its 3rd user run. LCLS is the first in its class of X-ray FEL user facilities, and presents different availability challenges compared to storage ring light sources. This paper presents recent availability performance of the FEL as well as factors to consider when defining the operational availability figure of merit for user runs. During LCLS [1] user runs, an availability of 95% has been set as a goal. In run III, LCLS photon and electron beam systems achieved availabilities of 94.8% and 96.7%, respectively. The total availability goal can be distributed among subsystems to track performance and identify areas that need attention in order to maintain and improve hardware reliability and operational availability. Careful beam time accounting is needed to understand the distribution of down time. The LCLS complex includes multiple experimental hutches for X-ray science, and each user program has different requirements of a set of parameters that the FEL can be configured to deliver. Since each user may have different criteria for what is considered 'acceptable beam', the quality of the beam must be considered to determine the X-ray beam availability.

Allen, W.B.; Brachmann, A.; Colocho, W.; Stanek, M.; Warren, J.; /SLAC; ,

2011-08-16T23:59:59.000Z

25

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

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

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

26

LCLS AMO web page  

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

Atomic, Molecular and Optical Science at the LCLS Atomic, Molecular and Optical Science at the LCLS Links: AMO LCLS SLAC LUSI Proposal Preparation Workshop: A workshop will be held June 2 & 3 at SLAC to assist users in preparing proposals to use the AMO instrument at the LCLS in anticipation of the first call for proposals due September 2008. The LCLS will begin user operations with the AMO instrument in August 2009. Information about the LCLS and the AMO instrument will be presented at the proposal preparation workshop to help users prepare successful proposals. The information will be made available on the LCLS-AMO web site after the meeting. Please see the workshop announcement for more information. LCLS Scientific Instruments: Four scientific instruments are currently being designed to capitalize on the unique properties of the LCLS, namely its high intensity short pulses x-rays. The Atomic, Molecular and Optical (AMO) science instrument will occupy a soft x-ray side branch of the LCLS in hutch 2 of the Near Experimental Hall (NEH). The AMO instrument is being built as a part of the LCLS construction project, while the other three instruments for x-ray pump probe(XPP), coherent x-ray imaging (CXI), and x-ray coherent scattering (XCS) are being built as part of a separate SLAC managed DOE project, the LCLS User Scientific Instruments project, LUSI.

27

Workshop on scientific applications of short wavelength coherent light sources  

SciTech Connect (OSTI)

This report contains paper on the following topics: A 2 to 4nm High Power FEL On the SLAC Linac; Atomic Physics with an X-ray Laser; High Resolution, Three Dimensional Soft X-ray Imaging; The Role of X-ray Induced Damage in Biological Micro-imaging; Prospects for X-ray Microscopy in Biology; Femtosecond Optical Pulses ; Research in Chemical Physics Surface Science, and Materials Science, with a Linear Accelerator Coherent Light Source; Application of 10 GeV Electron Driven X-ray Laser in Gamma-ray Laser Research; Non-Linear Optics, Fluorescence, Spectromicroscopy, Stimulated Desorption: We Need LCLS' Brightness and Time Scale; Application of High Intensity X-rays to Materials Synthesis and Processing; LCLS Optics: Selected Technological Issues and Scientific Opportunities; Possible Applications of an FEL for Materials Studies in the 60 eV to 200 eV Spectral Region.

Spicer, W.; Arthur, J.; Winick, H.

1993-02-01T23:59:59.000Z

28

Workshop on scientific applications of short wavelength coherent light sources  

SciTech Connect (OSTI)

This report contains paper on the following topics: A 2 to 4nm High Power FEL On the SLAC Linac; Atomic Physics with an X-ray Laser; High Resolution, Three Dimensional Soft X-ray Imaging; The Role of X-ray Induced Damage in Biological Micro-imaging; Prospects for X-ray Microscopy in Biology; Femtosecond Optical Pulses?; Research in Chemical Physics Surface Science, and Materials Science, with a Linear Accelerator Coherent Light Source; Application of 10 GeV Electron Driven X-ray Laser in Gamma-ray Laser Research; Non-Linear Optics, Fluorescence, Spectromicroscopy, Stimulated Desorption: We Need LCLS` Brightness and Time Scale; Application of High Intensity X-rays to Materials Synthesis and Processing; LCLS Optics: Selected Technological Issues and Scientific Opportunities; Possible Applications of an FEL for Materials Studies in the 60 eV to 200 eV Spectral Region.

Spicer, W.; Arthur, J.; Winick, H.

1993-02-01T23:59:59.000Z

29

LCLS CDR Preface  

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

Preface Preface This Conceptual Design Report (CDR) describes the design of the LCLS. It will be updated to stay current with the developing design of the machine. This CDR begins as the baseline conceptual design and will evolve into an "as-built" manual for the completed FEL. The current released version of the CDR can be found on the LCLS web page, http://www-ssrl.slac.stanford.edu/lcls/. The Executive Summary, Chapter 1, gives an introduction to the LCLS project and describes the salient features of its design. Chapter 2 is a stand-alone document that gives an overview of the LCLS. It describes the general parameters of the machine and the basic approaches to implementation. The LCLS project does not include the implementation of specific scientific experiments.

30

Transverse Coherence of the LCLS X-Ray Beam  

SciTech Connect (OSTI)

Self-amplifying spontaneous radiation free-electron lasers, such as the LCLS or the European X-FEL, rely on the incoherent, spontaneous radiation as the seed for the amplifying process. Though this method overcomes the need for an external seed source one drawback is the incoherence of the effective seed signal. The FEL process allows for a natural growth of the coherence because the radiation phase information is spread out within the bunch due to slippage and diffraction of the radiation field. However, at short wavelengths this spreading is not sufficient to achieve complete coherence. In this presentation we report on the results of numerical simulations of the LCLS X-ray FEL. From the obtained radiation field distribution the coherence properties are extracted to help to characterize the FEL as a light source.

Not Available

2010-12-01T23:59:59.000Z

31

Transverse-coherence properties of the FEL at the LCLS  

SciTech Connect (OSTI)

The recently commissioned Linac Coherent Light Source is an x-ray free-electron laser at the SLAC National Accelerator Laboratory, which is now operating at x-ray wavelengths of 20-1.2 Angstrom with peak brightness nearly ten orders of magnitude beyond conventional synchrotron sources. Understanding of coherence properties of the radiation from SASE FELs at LCLS is of great practical importance for some user experiments. We present the numerical analysis of the coherence properties at different wavelengths based on a fast algorithmusing ideal and start-end simulated FEL fields. The sucessful commissioning and operation of the linac coherent light source (LCLS) [1] has demonstrated that the x-ray free-electron laser (FEL) has come of age; these types of x-ray sources are poised to revolutionize the ultra-fast x-ray sciences. The LCLS and other hard x-ray FELs under construction are based on the principle of self-amplified spontaneous emission (SASE) [2, 3], where the amplification process starts from the shot noise in the electron beam. A large number of transverse radiation modes are also excited when the electron beam enters the undulator. The FEL collective instability in the electron beam causes the modulation of the electron density to increase exponentially, and after sufficient undulator distances, a single transverse mode starts to dominate. As a result, SASE FEL is almost fully coherent in the transverse dimension. Understanding of transverse coherence properties of the radiation from SASE FELs is of great practical importance. The longitudinal coherence properties of SASE FELs have been studied before [4]. Some studies on the transverse coherence can be found in previous papers, for example, in ref. [5, 6, 7, 8, 9]. In this paper, we first discuss a new numerical algorithm based on Markov chain Monte Carlo techniques to calculate the FEL transverse coherence. Then we focus on the numerical analysis of the LCLS FEL transverse coherence.

Ding, Yuantao

2010-09-02T23:59:59.000Z

32

National Synchrotron Light Source  

ScienceCinema (OSTI)

A tour of Brookhaven's National Synchrotron Light Source (NSLS), hosted by Associate Laboratory Director for Light Sources, Stephen Dierker. The NSLS is one of the world's most widely used scientific research facilities, hosting more than 2,500 guest researchers each year. The NSLS provides intense beams of infrared, ultraviolet, and x-ray light for basic and applied research in physics, chemistry, medicine, geophysics, environmental, and materials sciences.

BNL

2009-09-01T23:59:59.000Z

33

Multi-Device Knob Utility for LCLS  

SciTech Connect (OSTI)

At the SLAC National Accelerator Laboratory (SLAC) the Controls Department (CD) has developed a new Multi-Device Knob Utility (MKB) based on the Experimental Physics and Industrial Control System (EPICS) toolkit for controlling one or more Process Variables (PVs) in unison, or simultaneously, from a physical knob located in the control room, or from various software tools such as the EPICS Extensible Display Manager (EDM) or a Swing slider in Java. A group of devices are hooked up to a knob, and then the value written to the devices is a simple function of the value of the knob. This is used, most commonly, to create a bump in the electron beam for the Linac Coherent Light Source (LCLS). Control system variables typically controlled are magnetic fields, phases, and timing offsets. This paper describes the technologies used to implement this utility.

Zelazny, Michael; Chevtsov, Sergei; Chu, Chungming Paul; Fairley, Diane; Krejcik, Patrick; Rogind, Deborah; Smith, Howard; White, Greg; Yocky, Gerald; /SLAC

2009-12-09T23:59:59.000Z

34

LCLS LLRF Upgrades to the SLAC Linac  

SciTech Connect (OSTI)

The Linac Coherent Light Source (LCLS) at SLAC will be the brightest X-ray laser in the world when it comes on line. In order to achieve the brightness a 200fS length electron bunch is passed through an undulator. To create the 200fS, 3kA bunch, a 10pS electron bunch, created from a photo cathode in an RF gun, is run off crest on the RF to set up a position to energy correlation. The bunch is then compressed by chicanes. The stability of the RF system is critical in setting up the position to energy correlation. Specifications derived from simulations require the RF system to be stable to below 200fS in several critical injector stations and the last kilometer of linac. The SLAC linac RF system is being upgraded to meet these requirements.

Akre, R.; Dowell, D.; Emma, P.; Frisch, J.; Hong, B.; Kotturi, K.; Krejcik, P.; Wu, J.; /SLAC; Byrd, J.; /LBL, Berkeley

2007-10-04T23:59:59.000Z

35

National Synchrotron Light Source  

ScienceCinema (OSTI)

A tour of Brookhaven's National Synchrotron Light Source (NSLS). The NSLS is one of the world's most widely used scientific research facilities, hosting more than 2,500 guest researchers each year. The NSLS provides intense beams of infrared, ultraviole

None

2010-01-08T23:59:59.000Z

36

National Synchrotron Light Source  

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

Environmental Assessment Environmental Assessment Proposed Upgrade and Improvement of the National Synchrotron Light Source Complex at Brookhaven National Laboratory, Upton, New York This Environmental Assessment addresses the proposed action by the U.S. Department of Energy to upgrade the facilities of the National Synchrotron Light Source Complex, namely the National Synchrotron Light Source (NSLS), the Accelerator Test Facility and the Source Development Laboratory. The environmental effects of a No-Action Alternative as well as a Proposed Action are evaluated in the Environmental Assessment. The “NSLS Environmental Assessment Fact Sheet” link below leads to a one-page summary of the Environmental Assessment. The “NSLS Environmental Assessment” link below leads to the whole 41-page

37

Microsoft PowerPoint - 10 Lee LCLS Lessons Learned PM Workshop Final [Compatibility Mode]  

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

i i h i h j Presentation Title Linac Coherent Light Source Project at the SLAC National Accelerator Laboratory Hanley Lee, Federal Project Director DOE Project Management Workshop j g p March 10, 2010 1 1.1 Management, Global Controls g 1.2 Injector 1.3 Linac F CLO Building N E i t H ll Far Experiment Hall Near Experiment Hall Far Experiment Hall Near Experiment Hall 2 LCLS Office of Science William Brinkman, Director Acquisition Executive Basic Energy Sciences Harriet Kung, Associate Dir. Tom Brown, LCLS Prog. Mgr. SLAC Site Office Paul Golan, Site Manager Hanley Lee FPD Hanley Lee, FPD Linac Coherent Light Source John Galayda, Project Director Mark Reichanadter, Deputy Proj. Dir. ES&H, QA Business, Admin 3 X-ray Transport Undulator Injector/Linac Conventional Facilities Instrument

38

National Synchrotron Light Source  

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

Report 2001 Report 2001 National Synchrotron Light Source For the period October 1, 2000 through September 30, 2001 Introduction Science Highlights Year in Review Operations Publications Abstracts Nancye Wright & Lydia Rogers The National Synchrotron Light Source Department is supported by the Office of Basic Energy Sciences United States Department of Energy Washington, D.C. Brookhaven National Laboratory Brookhaven Science Associates, Inc. Upton, New York 11973 Under Contract No. DE-AC02-98CH10886 Mary Anne Corwin Steven N. Ehrlich & Lisa M. Miller Managing Editor Science Editors Production Assistants Cover images (clockwise from top left) 1. from Science Highlight by K.R. Rajashankar, M.R. Chance, S.K. Burley, J. Jiang, S.C. Almo, A. Bresnick, T. Dodatko, R. Huang, G. He,

39

X-RAY ACTIVE MATRIX PIXEL SENSORS BASEDON J-FET TECHNOLOGY DEVELOPED FOR THE LINAC COHERENT LIGHT SOURCE.  

SciTech Connect (OSTI)

An X-ray Active Matrix Pixel Sensor (XAMPS) is being developed for recording data for the X-ray Pump Probe experiment at the Linac Coherent Light Source (LCLS). Special attention has to be paid to some technological challenges that this design presents. New processes were developed and refined to address problems encountered during previous productions of XAMPS. The development of these critical steps and corresponding tests results are reported here.

CARINI,G.A.; CHEN, W.; LI, Z.; REHAK, P.; SIDDONS, D.P.

2007-10-29T23:59:59.000Z

40

National Synchrotron Light Source  

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

All Documents listed below are part of the Photon Sciences Directorate and All Documents listed below are part of the Photon Sciences Directorate and will be updated as needed. Photon Sciences ESH Standard Operating Procedures (SOPs) SOP No. Standard Operating Procedure for: LS-ES-0002 Procedure for Acid Etching of Silicon and Germanium Crystals LS-ESH-0004 NSLS Operations Group Chemical Spill and Gas Release Response LS-ESH-0010 VUV Injection Shutter LOTO LS-ESH-0012 LINAC LOTO LS-ESH-0013 Controlled Access to the VUV Ring LS-ESH-0014 Radiation Safety Interlocks at the National Synchrotron Light Source LS-ESH-0019 Beam Line Configuration Control Checklist Requirements LS-ESH-0020 Biosafety Requirements at the NSLS LS-ESH-0021 Biosafety Level 2 work at the NSLS/ A Technical Basis LS-ESH-0022 Beam Line Configuration Control Checklist Requirements

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


41

Light Sources Directorate Strategic Plan  

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

Light Sources Directorate Light Sources Directorate Strategic Plan December 2009 Light Sources Directorate Strategic Plan December 2009 ii | Vision and Mission Light Sources Directorate Strategic Plan The VISION of the Light Sources Directorate is: to be a provider of choice for world-class photon science and facilities that deliver outstanding scientific productivity and impact, and to be recognized as a leader in developing innovative techniques and ap- plications of photon science Our MISSION is defined by the set of activities that are required to realize this vision: to advance scientific knowledge and to solve critical problems through the design, construction, operation, and use of premier photon science facilities | Table of Contents Light Sources Directorate Strategic Plan

42

Advanced Light Source  

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

Next >> Next >> Visitors Access to the ALS Gate Access guest-house Guest House lab-shuttles Lab Shuttles maps-and-directions Maps and Directions Parking Safety Safety for Users safety-for-staff Safety for Staff In Case of Emergency Resources Acronyms Multimedia Employment staff-intranet Staff Intranet Site Map Contact Digg: ALSBerkeleyLab Facebook Page: 208064938929 Flickr: advancedlightsource Twitter: ALSBerkeleyLab YouTube: AdvancedLightSource January 2014 Sun Mon Tue Wed Thu Fri Sat 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 Recent Science Highlights Minding the Gap Makes for More Efficient Solar Cells Using novel materials to develop thin, flexible, and more efficient photovoltaic cells is one of the hottest topics in current materials research. A class of transition metals undergo a dramatic change that makes them ideal for solar energy applications.

43

Presentation: Synchrotron Radiation Light Sources  

Broader source: Energy.gov [DOE]

A briefing to the Secretary's Energy Advisory Board on Synchrotron Radiation Light Sources delivered by Patricia Dehmer, U.S. Department of Energy

44

LCLS CDR Chapter 12  

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

2 2 2 Alignment TECHNICAL SYNOPSIS This section describes the procedures and methods used to position the LCLS components with their required accuracy. Most of the alignment requirements are well within the range of proven traditional alignment techniques. Alignment of the undulator section is the most demanding. State-of-the-art equipment and procedures will be needed to meet the positioning requirements. The alignment coordinate system will be the existing Cartesian right-handed system, which was implemented for the SLC project and was also used for the PEPII project. The alignment network will consist of four parts: a small surface network to better integrate the remote hall into the global coordinate system, and three tunnel networks for linac, undulator and transport lines /

45

LCLS CDR Chapter 11 - Controls  

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

will be EPICS-based. These systems include: (1) The LCLS Injector systems, such as, the gun, the gun laser, the injector linac and the DL1 beamline. (2) The undulator segments,...

46

Electron Bunch Length Measurement for LCLS at SLAC  

SciTech Connect (OSTI)

At Stanford Linear Accelerator Center (SLAC) a Bunch Length Measurement system has been developed to measure the length of the electron bunch for its new Linac Coherent Light Source (LCLS). This destructive measurement uses a transverse-mounted RF deflector (TCAV) to vertically streak the electron beam and an image taken with an insertable screen and a camera. The device control software was implemented with the Experimental Physics and Industrial Control System (EPICS) toolkit. The analysis software was implemented in Matlab{trademark} using the EPICS/Channel Access Interface for Scilab{trademark} and Matlab{trademark} (labCA). This architecture allowed engineers and physicists to develop and integrate their control and analysis without duplication of effort.

Zelazny, M.; Allison, S.; Chevtsov, Sergei; Emma, P.; Kotturi, K.d.; Loos, H.; Peng, S.; Rogind, D.; Straumann, T.; /SLAC

2007-10-04T23:59:59.000Z

47

Cracking Molecular Structures with Bright Lights - and a Few Good Eggs |  

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

Cracking Molecular Structures with Bright Lights - and a Few Good Cracking Molecular Structures with Bright Lights - and a Few Good Eggs Cracking Molecular Structures with Bright Lights - and a Few Good Eggs June 22, 2012 - 11:04am Addthis This rendering shows a lysozyme structural model against its X-ray diffraction pattern from SLAC’s Linac Coherent Light Source (LCLS), a powerful X-ray laser facility. Researchers have achieved high-resolution images of these simple biomolecules using advanced crystallography at LCLS. | Photo by Anton Barty/DESY This rendering shows a lysozyme structural model against its X-ray diffraction pattern from SLAC's Linac Coherent Light Source (LCLS), a powerful X-ray laser facility. Researchers have achieved high-resolution images of these simple biomolecules using advanced crystallography at LCLS.

48

Two-Color Self-Seeding at LCLS | Stanford Synchrotron Radiation Lightsource  

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

Two-Color Self-Seeding at LCLS Two-Color Self-Seeding at LCLS Wednesday, September 18, 2013 - 3:00pm SLAC, Redtail Hawk Conference Room 108A Franz-Josef Decker, Accelerator Directorate The Linac Coherent Light Source (LCLS) produces typically SASE FEL pulses with intensities of up to 5 mJ and at high photon energy an FEL bandwidth 0.2% (FWHM). Self-seeding with a diamond crystal reduces the bandwidth by a factor of 10 to 40. The range depends on which Bragg reflection is used, or the special setup of the electron beam like over-compression. The peak intensity level is lower by a factor of only five, giving the seeded beam an advantage of about 2.5 in average intensity over the use of a monochromator with SASE. At certain energies and crystal angles different Bragg lines cross which allows seeding at two or even three different colors inside the bandwidth

49

Calculating the Loss factor of the LCLS Beam Line Elements for Ultra-Shrot Bunches  

SciTech Connect (OSTI)

The Linac Coherent Light Source (LCLS) is a SASE 1.5-15 {angstrom} x-ray Free-Electron Laser (FEL) facility. Since an ultra-short intense bunch is used in the LCLS operation one might suggest that wake fields, generated in the vacuum chamber, may have an effect on the x-ray production because these fields can change the beam particle energies thereby increasing the energy spread in a bunch. At LCLS a feedback system precisely controls the bunch energy before it enters a beam transport line after the linac. However, in the transport line and later in the undulator section the bunch energy and energy spread are not under feedback control and may change due to wake field radiation, which depends upon the bunch current or on a bunch length. The linear part of the energy spread can be compensated in the upstream linac; the energy loss in the undulator section can be compensated by varying the K-parameter of the undulators, however we need a precise knowledge of the wake fields in this part of the machine. Resistive wake fields are known and well calculated. We discuss an additional part of the wake fields, which comes from the different vacuum elements like bellows, BPMs, transitions, vacuum ports, vacuum valves and others. We use the code 'NOVO' together with analytical estimations for the wake potential calculations.

Novokhatski, A.; /SLAC

2009-10-17T23:59:59.000Z

50

Fusion pumped light source  

DOE Patents [OSTI]

Apparatus is provided for generating energy in the form of light radiation. A fusion reactor is provided for generating a long, or continuous, pulse of high-energy neutrons. The neutron flux is coupled directly with the lasing medium. The lasing medium includes a first component selected from Group O of the periodic table of the elements and having a high inelastic scattering cross section. Gamma radiation from the inelastic scattering reactions interacts with the first component to excite the first component, which decays by photon emission at a first output wavelength. The first output wavelength may be shifted to a second output wavelength using a second liquid component responsive to the first output wavelength. The light outputs may be converted to a coherent laser output by incorporating conventional optics adjacent the laser medium.

Pappas, Daniel S. (Los Alamos, NM)

1989-01-01T23:59:59.000Z

51

Next Generation Light Source Workshops  

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

Next Generation Light Source Workshops A series of workshops will be held in late August with the goal of refining the scientific drivers for the facility and translating the...

52

SLAC Linac Coherent Light Source User Site  

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

53

Fourth Generation Light Source Workshop  

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

The Workshop on Scientific Opportunities for Fourth Generation Light The Workshop on Scientific Opportunities for Fourth Generation Light Sources October 27 to 29, 1997 at the Advanced Photon Source at Argonne National Laboratory. This workshop is being co-hosted by APS, NSLS, SSRL and TJNAF. FGLSlogo This workshop will explore the phenomenology of interactions with ultra-high-power, -brilliance, and -coherence light sources in the DUV, soft x-ray, and x-ray regimes, as well as the scientific opportunities they provide. The workshop will begin with tutorials on the generation and properties of these sources and identify issues in their use in experimentation. Also included will be an overview of current efforts to develop these sources and a review of the scientific opportunities defined by previous research and workshops. These background talks will be followed

54

LCLS Operating Schedule  

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

LCLS Operating Schedule LCLS Operating Schedule August - December 2009 Ver: 2 10/30/09 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 S Su M T W Th F S Su M T W Th F S Su M T W Th F S Su M T W Th F S Su M 0000-0800 MD MD MD MD MD 0800-1600 ROD MD AMO ROD MD AMO 1600-2400 MD MD Commissioning MD MD Comm. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 T W Th F S Su M T W Th F S Su M T W Th F S Su M T W Th F S Su M T W 0000-0800 MD MD MD MD MD MD MD MD MD 0800-1600 MD ROD AMO MD ROD AMO MD ROD AMO MD ROD AMO ROD 1600-2400 MD MD Commissioning MD MD Commissioning MD MD Commissioning MD MD Commissioning MD 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 Th F S Su M T W Th F S Su M T W Th F S Su M T W Th F S Su M T W Th F S 0000-0800 MD MD MD MD MD MD MD MD MD 0800-1600 Young MD ROD DiMauro MD ROD Berrah MD ROD Coffee MD ROD Young-II 1600-2400 L018 MD MD L026 MD MD L015 MD MD L027 MD MD L017 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Su

55

LCLS CDR Glossary  

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

C C Glossary ACO Anneaux Collisions Orsay, 500 MeV storage ring, LURE, Orsay, France ADC Analog to Digital Converter ADONE 1.5 GeV storage ring, Frascati, Italy ALS Advanced Light Source (LBNL) AMPERES 3D Magnet Modeling Code ANL Argonne National Laboratory APS Advanced Photon Source (ANL) ASSET Accelerator Structure Setup ATF Accelerator Test Facility (BNL) BBO BaB 2 O 4 , Beta barium Borate BC1 Bunch Compressor 1 BC2 Bunch Compressor 2 BC2-ED Emittance Diagnostic Station following BC2 BCS Beam Containment System BES Basic Energy Sciences (DOE) BESAC Basic Energy Sciences Advisory Committee BNL Brookhaven National Laboratory BPM Beam Position Monitor BSOIC Beam Shut-Off Ion Chamber BTM Burn Through Monitor BW Band Width CAMAC Computer Automated Measurement and Control

56

LightSource Renewables | Open Energy Information  

Open Energy Info (EERE)

LightSource Renewables Jump to: navigation, search Name: LightSource Renewables Place: San Diego, California Zip: 92121 Sector: Wind energy Product: Wind project developer...

57

Second and Third Harmonic Measurements at the Linac Coherent Light Source  

SciTech Connect (OSTI)

The Linac Coherent Light Source (LCLS) started user commissioning in October of 2009, producing Free Electron Laser (FEL) radiation between 800 eV and 8 keV [1]. The fundamental wavelength of the FEL dominates radiation in the beamlines, but the beam also produces nonnegligible levels of radiation at higher harmonics. The harmonics may be desirable as a source of harder X-rays, but may also contribute backgrounds to user experiments. In this paper we present preliminary measurements of the second and third harmonic content in the FEL. We also measure the photon energy cutoff of the soft X-ray mirrors to determine the extent to which higher harmonics reach the experimental stations. We present preliminary second and third harmonic measurements for LCLS. At low energies (below 1 keV fundamental) we measure less than 0.1% second harmonic content. The second harmonic will be present in the soft X-ray beam line for fundamental photon energies below approximately 1.1 keV. At low and high energies, we measure third harmonic content ranging from 0.5% to 3%, which is consistent with expectations. For both second and third harmonics, experimental work is ongoing. More rigorous analysis of the data will be completed soon.

Ratner, D.; /Stanford U., Phys. Dept.; Brachmann, A.; Decker, F.J.; Ding, Y.; Dowell, D.; Emma, P.; Fisher, A.; Frisch, J.; Gilevich, S.; Huang, Z.; Hering, P.; Iverson, R.; Krzywinski, J.; Loos, H.; Messerschmidt, M.; Nuhn, H.D.; Smith, T.; Turner, J.; Welch, J.; White, W.; Wu, J.; /SLAC

2011-01-03T23:59:59.000Z

58

National Synchrotron Light Source annual report 1991  

SciTech Connect (OSTI)

This report contains abstracts from research conducted at the national synchrotron light source. (LSP)

Hulbert, S.L.; Lazarz, N.N. (eds.)

1992-04-01T23:59:59.000Z

59

Single-layer mirrors for advanced research light sources  

SciTech Connect (OSTI)

X-ray mirrors are needed for beam guidance, beam alignment and monochromatisation at third-generation synchrotron light sources (PETRA III) and forthcoming Free-Electron Lasers (LCLS, European XFEL). Amorphous carbon coatings are currently used as total reflection mirrors at FLASH to guide the photon beam to the various beamlines. These coatings were prepared by means of magnetron sputtering. The new GKSS sputtering facility for the deposition of single and multilayer mirrors with a length of up to 1500 mm and a width of up to 120 mm is in operation. In this contribution we present the results of this new deposition system. A major advantage is that it is now possible to prepare one, two or more mirrors with similar properties over the whole deposition length. The mirror properties were investigated by means of X-ray reflectometry and interference microscopy. The performance of the mirrors is analyzed, considering X-ray reflectivity, film thickness and surface roughness. The uniformity of these properties over the whole deposition length of 1500 mm is demonstrated. The results obtained will be discussed and compared with former results.

Stoermer, M.; Horstmann, C. [GKSS Research Centre Geesthacht GmbH, Institute of Materials Research, Max-Planck-Str. 1, D-21502 Geesthacht (Germany); Siewert, F. [Helmholtz Zentrum Berlin / BESSY-II, Albert-Einstein-Str. 15, 12489 Berlin (Germany); Scholze, F.; Krumrey, M. [Physikalisch-Technische Bundesanstalt (PTB), Abbestr. 2-12, 10587 Berlin (Germany); Hertlein, F.; Matiaske, M.; Wiesmann, J. [Incoatec GmbH, Max-Planck-Str. 2, D-21502 Geesthacht (Germany); Gaudin, J. [European XFEL, DESY, 22603 Hamburg (Germany)

2010-06-23T23:59:59.000Z

60

Next Generation Light Source Workshops  

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

Next Generation Light Source Workshops Next Generation Light Source Workshops A series of workshops will be held in late August with the goal of refining the scientific drivers for the facility and translating the scientific needs into the technical performance requirements. Feedback from these workshops will provide important input for advancing the design of the facility. Workshops are planned in the following areas Fundamental Atomic, Molecular, Optical Physics & Combustion Dynamics Mon. Aug. 20 - Tues. Aug 21, 2012 Physical Chemistry, Catalysis, & Photosynthesis Thurs. Aug. 23 - Fri. Aug 24, 2012 Quantum Materials, Magnetism & Spin Dynamics Mon. Aug. 27 - Tues. Aug 28, 2012 Materials & Bio-imaging at the Nanoscale Thurs. Aug. 30 - Fri. Aug 31, 2012 Further information is available on the workshop website:

Note: This page contains sample records for the topic "light source lcls" 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  

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

62

SLAC Linac Coherent Light Source User Site  

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

63

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

SciTech Connect (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

64

LCLS CDR Chapter 3 - Scientific Experiments  

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

3 3 Scientific Basis for Optical Systems TECHNICAL SYNOPSIS The LCLS Scientific Advisory Committee (SAC) has recommended experiments in five scientific disciplines for the initial operation of the LCLS. These experiments cover a variety of scientific disciplines: atomic physics, plasma physics, chemistry, biology and materials science. The x-ray optics and detectors needed to verify the LCLS capability to address these five disciplines will be constructed and installed as part of the LCLS project. The experiments are described in detail in the document "LCLS: The First Experiments" referenced earlier. Two classes of experiments are proposed for the LCLS. The first class consists of experiments where the x-ray beam is used to probe the sample, as is done in most experiments at current

65

LCLS_CDR-ch10  

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

0 0 0 Conventional Facilities TECHNICAL SYNOPSIS The LCLS takes advantage of the existing infrastructure at SLAC. It uses the last third of the existing 3 km linac including the existing enclosure and utilities. A new injector will be installed at sector 20 in the Off-Axis Injector Tunnel. This branch tunnel was constructed as part of the original construction at SLAC in the 1960s for just such an injector. The existing linac equipment including the klystrons and modulators will be used. The injector tunnel will require some modifications to bring it to current safety standards and to accommodate the specific requirements of the LCLS injector. Two short sections of linac will be removed to accommodate the magnets and vacuum chambers for the two pulse compressors. New systems to bring power and water to these

66

LCLS Gun Solenoid Design Considerations  

SciTech Connect (OSTI)

The LCLS photocathode rf gun requires a solenoid immediately downstream for proper emittance compensation. Such a gun and solenoid have been operational at the SSRL Gun Test Facility (GTF) for over eight years. Based on magnetic measurements and operational experience with the GTF gun solenoid multiple modifications are suggested for the LCLS gun solenoid. The modifications include adding dipole and quadrupole correctors inside the solenoid, increasing the bore to accommodate the correctors, decreasing the mirror plate thickness to allow the solenoid to move closer to the cathode, cutouts in the mirror plate to allow greater optical clearance with grazing incidence cathode illumination, utilizing pancake coil mirror images to compensate the first and second integrals of the transverse fields and incorporating a bipolar power supply to allow for proper magnet standardization and quick polarity changes. This paper describes all these modifications plus the magnetic measurements and operational experience leading to the suggested modifications.

Schmerge, John

2010-12-10T23:59:59.000Z

67

Science and Technology of Future Light Sources  

E-Print Network [OSTI]

and Technology of Future Light Sources   Far from Equilibrium Chemical Processes in a Functional Solar Cellsolar cell (DSSC). [Source: Michael Graetzel, Swiss Federal Institute of Technology,

Bergmann, Uwe

2009-01-01T23:59:59.000Z

68

A Stability of LCLS Linac Modulators  

SciTech Connect (OSTI)

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

69

NGLS: Next Generation Light Source  

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

Lab masthead Berkeley Lab A-Z Index Phone Book Careers Search DOE logo Lab masthead Berkeley Lab A-Z Index Phone Book Careers Search DOE logo NGLS logo NGLS Science NGLS Technology Seminars Workshop/Reports Related Links Further Info NGLS Facility Combustion Photosynthesis Photosynthesis Photosynthesis Today is a golden age for light sources. Storage ring-based synchrotrons routinely provide X-ray beams exploited by thousands of scientists annually to answer fundamental questions in diverse fields including human health, energy, and electronics and information processing. MORE > NGLS Science Science section chart NGLS CD-0 Proposal NGLS Technology Technology section chart Seminars Science section chart Workshops Science section chart Last updated 06/21/2013 Top A U.S. Department of Energy National Laboratory Operated by the University

70

SLAC Linac Coherent Light Source User Site  

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

71

LCLS Undulator Quadrupole Fiducialization Plan  

SciTech Connect (OSTI)

This note presents the fiducialization plan for the LCLS undulator quadrupoles. The note begins by summarizing the requirements for the fiducialization. A discussion of the measurement equipment is presented, followed by the methods used to perform the fiducialization and check the results. This is followed by the detailed fiducialization plan in which each step is enumerated. Finally, the measurement results and data storage formats are presented. The LCLS is made up of 33 assemblies consisting of an undulator, quadrupole, beam finder wire, and other components mounted on a girder. The components must be mounted in such a way that the beam passes down the axis of each component. In this note, we describe how the ideal beam axis is related to tooling balls on the quadrupole. This step, called fiducialization, is necessary because the ideal beam axis is determined magnetically, whereas tangible objects must be used to locate the quadrupole. The note begins with the list of fiducialization requirements. The laboratory in which the work will be performed and the relevant equipment is then briefly described. This is followed by a discussion of the methods used to perform the fiducialization and the methods used to check the results. A detailed fiducialization plan is presented in which all the steps of fiducialization are enumerated. A discussion of the resulting data files and directory structure concludes the note.

Wolf, Zachary; Levashov, Michael; Lundahl, Eric; Reese, Ed; LeCocq, Catherine; Ruland, Robert; /SLAC; ,

2010-11-24T23:59:59.000Z

72

Untrapped HOM Radiation Absorption in the LCLS-II Cryomodules  

E-Print Network [OSTI]

The superconducting cavities in the continuous wave (CW) linacs of LCLS-II are designed to operate at 2 K, where cooling costs are very expensive. One source of heat is presented by the higher order mode (HOM) power deposited by the beam. Due to the very short bunch length--especially in L3 the final linac--the LCLS-II beam spectrum extends into the terahertz range. Ceramic absorbers, at 70 K and located between cryomodules, are meant to absorb much of this power. In this report we perform two kinds of calculations to estimate the effectiveness of the absorbers and the amount of beam power that needs to be removed at 2 K.

Bane, K; Adolphsen, C; Raubenheimer, T; Saini, A; Solyak, N; Yakovlev, V

2014-01-01T23:59:59.000Z

73

Photon Statistics of Semiconductor Light Sources.  

E-Print Network [OSTI]

??In recent years, semiconductor light sources have become more and more interesting in terms of applications due to their high efficiency and low cost. Advanced… (more)

Aßmann, Marc

2010-01-01T23:59:59.000Z

74

Building the World's Most Advanced Light Source  

SciTech Connect (OSTI)

View this time-lapse video showing construction of the National Synchrotron Light Source II at Brookhaven National Laboratory. Construction is shown from 2009-2012.

None

2012-08-03T23:59:59.000Z

75

LCLS  

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

are needed. Again, much of this technology exists in the DOE laboratories but will need upgrading and modification. The electron detectors, for example, must be capable of...

76

LCLS_CDR-ch06  

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

6 6 Injector TECHNICAL SYNOPSIS The injector for the LCLS is required to produce a single 150-MeV bunch of charge 1.0 nC and 100 A peak current at a repetition rate of 120 Hz with a normalized rms transverse emittance of 1.0 µm. The required emittance is about a factor of 2 lower than has been achieved to date. The design employs a solenoidal field near the cathode of a specially designed rf photocathode gun that allows the initial emittance growth due to space charge to be almost completely compensated by the end of the booster linac. Following the booster linac, the geometric emittance simply damps linearly with energy. PARMELA simulations show that this design will produce the desired normalized emittance. In addition to low emittance, there are two additional electron-beam requirements that pose

77

LCLS CDR Chapter 8 - Undulator  

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

8 8 Undulator TECHNICAL SYNOPSIS The LCLS Undulator is made up of 33 individual undulator segments. Each undulator segment will be a permanent-magnet planar hybrid device with a period length of 30 mm and a fixed gap of nominally 6 mm. The actual gap will be adjusted as necessary to yield an effective K of 3.71. Each undulator segment is 3.42 m long, with 226 poles per jaw. The poles will be made of vanadium permendur and the magnets of a grade of NdFeB with a high intrinsic coercivity for better resistance to radiation-induced demagnetization. The electron beam will be focused by a separated function FODO lattice, using permanent-magnet quadrupoles placed between the undulator segments. These focusing or defocusing lenses will share the drift spaces between the

78

Advanced Light Source Activity Report 2002  

SciTech Connect (OSTI)

This annual report of the Advanced Light Source details science highlights and facility improvements during the year. It also offers information on events sponsored by the facility, technical specifications, and staff and publication information.

Duque, Theresa; Greiner, Annette; Moxon, Elizabeth; Robinson, Arthur; Tamura, Lori (Editors)

2003-06-12T23:59:59.000Z

79

National Synchrotron Light Source annual report 1988  

SciTech Connect (OSTI)

This report discusses the experiment done at the National Synchrotron Light Source. Most experiments discussed involves the use of the x-ray beams to study physical properties of solid materials. (LSP)

Hulbert, S.; Lazarz, N.; Williams, G. (eds.)

1988-01-01T23:59:59.000Z

80

LCLS CDR Chapter 2 - Overview  

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

2 2 Overview 2.1 Introduction The x-ray research community has become accustomed to exponential increases in performance parameters of synchrotron light sources since the construction of the first dedicated facilities. Each stepwise increase in performance was initially perceived as revolutionary. Indeed, after their initial impact, the successive generations of x-ray sources have become indispensable tools for research in chemistry, materials science, biology and environmental sciences. The immediate and sustained nature of this impact was assessed in the 1984 Seitz-Eastman Report [1] to the National Research Council and, thirteen years later, in the Birgeneau/Shen Report [2] to the DOE Basic Energy Sciences Advisory Committee. The latter report states that:

Note: This page contains sample records for the topic "light source lcls" 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

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

SciTech Connect (OSTI)

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

82

Monte Carlo Studies of the Radiation Fields in the Linac Coherent Light Source Undulators and of the Corresponding Signals in the Cerenkov Beam Loss Monitors  

SciTech Connect (OSTI)

In 2009 the Linac Coherent Light Source (LCLS) at the SLAC National Accelerator Center started free electron laser (FEL) operation. In order to continue to produce the bright and short-pulsed x-ray laser demanded by FEL scientists, this pioneer hard x-ray FEL requires a perfectly tailored magnetic field at the undulators, so that the photons generated at the electron wiggling path interact at the right phase with the electron beam. In such a precise system, small (>0.01%) radiation-induced alterations of the magnetic field in the permanent magnets could affect FEL performance. This paper describes the simulation studies of radiation fields in permanent magnets and the expected signal in the detectors. The transport of particles from the radiation sources (i.e. diagnostic insert) to the undulator magnets and to the beam loss monitors (BLM) was simulated with the intra nuclear cascade codes FLUKA and MARS15. In order to accurately reproduce the optics of LCLS, lattice capabilities and magnetic fields were enabled in FLUKA and betatron oscillations were validated against reference data. All electron events entering the BLMs were printed in data files. The paper also introduces the Radioactive Ion Beam Optimizer (RIBO) Monte Carlo 3-D code, which was used to read from the event files, to compute Cerenkov production and then to simulate the optical coupling of the BLM detectors, accounting for the transmission of light through the quartz.

Santana Leitner, Mario

2010-09-14T23:59:59.000Z

83

Compact X-Ray Light Source Workshop | EMSL  

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

Compact X-Ray Light Source Workshop Compact X-Ray Light Source Workshop Teller R, Terminello L, Thevuthasan T, Moncton D. 2012. "Compact X-Ray Light Source Workshop Report."...

84

Light sources based on semiconductor current filaments  

DOE Patents [OSTI]

The present invention provides a new type of semiconductor light source that can produce a high peak power output and is not injection, e-beam, or optically pumped. The present invention is capable of producing high quality coherent or incoherent optical emission. The present invention is based on current filaments, unlike conventional semiconductor lasers that are based on p-n junctions. The present invention provides a light source formed by an electron-hole plasma inside a current filament. The electron-hole plasma can be several hundred microns in diameter and several centimeters long. A current filament can be initiated optically or with an e-beam, but can be pumped electrically across a large insulating region. A current filament can be produced in high gain photoconductive semiconductor switches. The light source provided by the present invention has a potentially large volume and therefore a potentially large energy per pulse or peak power available from a single (coherent) semiconductor laser. Like other semiconductor lasers, these light sources will emit radiation at the wavelength near the bandgap energy (for GaAs 875 nm or near infra red). Immediate potential applications of the present invention include high energy, short pulse, compact, low cost lasers and other incoherent light sources.

Zutavern, Fred J. (Albuquerque, NM); Loubriel, Guillermo M. (Albuquerque, NM); Buttram, Malcolm T. (Sandia Park, NM); Mar, Alan (Albuquerque, NM); Helgeson, Wesley D. (Albuquerque, NM); O'Malley, Martin W. (Edgewood, NM); Hjalmarson, Harold P. (Albuquerque, NM); Baca, Albert G. (Albuquerque, NM); Chow, Weng W. (Cedar Crest, NM); Vawter, G. Allen (Albuquerque, NM)

2003-01-01T23:59:59.000Z

85

Stanford Synchrotron Radiation Light Source (SSRL) | U.S. DOE...  

Office of Science (SC) Website

Syncrotron Light Source (NSLS-II) Stanford Synchrotron Radiation Light Source (SSRL) Neutron Scattering Facilities Nanoscale Science Research Centers (NSRCs) Projects...

86

RF Design of the LCLS Gun  

SciTech Connect (OSTI)

Final dimensions for the LCLS RF gun are described. This gun, referred to as the LCLS gun, is a modified version of the UCLA/BNL/SLAC 1.6 cell S-Band RF gun [1], referred to as the prototype gun. The changes include a larger mode separation (15 MHz for the LCLS gun vs. 3.5 MHz for the prototype gun), a larger radius at the iris between the 2 cells, a reduced surface field on the curvature of the iris between the two cells, Z power coupling, increased cooling channels for operation at 120 Hz, dual rf feed, deformation tuning of the full cell, and field probes in both cells. Temporal shaping of the klystron pulse, to reduce the average power dissipated in the gun, has also been adopted. By increasing the mode separation, the amplitude of the 0-mode electric field on the cathode decreases from 10% of the peak on axis field for the prototype gun to less than 3% for the LCLS gun for the steady state fields. Beam performance is improved as shown by the PARMELA simulations. The gun should be designed to accept a future load lock system. Modifications follow the recommendations of our RF review committee [2]. Files and reference documents are compiled in Section IV.

Limborg-Deprey, C

2010-12-13T23:59:59.000Z

87

NRC Construction Light Source Flicker: What We  

E-Print Network [OSTI]

frequency] (CFF) ·Health - World Health Organization (1947): · ...a state of complete physical, mental Handbook: Reference & Application (9th Ed.), 2000, p. 3-20 #12;NRC Construction Flicker Effects 1;NRC Construction Flicker Problem 2 ·Does it matter what light source produces the flicker

California at Davis, University of

88

AFRD - Advanced Light Source Accelerator Physics  

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

ALS Accelerator Physics ALS Accelerator Physics Home Organization Outreach and Diversity News Highlights Safety Links Intramural FPO Accelerator Physics Group This page and the Group's own site emphasize the continuing effort to improve the performance and versatility of the accelerator-related systems of the ALS. If you want to start with a nontechnical explanation of what synchrotron light is, how scientists use it, and how the Advanced Light Source works, try About the ALS. The research performed using beams from the ALS is a vast topic that spans many scientific disciplines; a good overview with in-depth links is available at the ALS Science Briefs page. The ALS is a “” synchrotron light source based on a low-emittance electron storage ring with a nominal energy of 1.9 GeV. Since the machine

89

Backscatter absorption gas imaging systems and light sources therefore  

DOE Patents [OSTI]

The location of gases that are not visible to the unaided human eye can be determined using tuned light sources that spectroscopically probe the gases and cameras that can provide images corresponding to the absorption of the gases. The present invention is a light source for a backscatter absorption gas imaging (BAGI) system, and a light source incorporating the light source, that can be used to remotely detect and produce images of "invisible" gases. The inventive light source has a light producing element, an optical amplifier, and an optical parametric oscillator to generate wavelength tunable light in the IR. By using a multi-mode light source and an amplifier that operates using 915 nm pump sources, the power consumption of the light source is reduced to a level that can be operated by batteries for long periods of time. In addition, the light source is tunable over the absorption bands of many hydrocarbons, making it useful for detecting hazardous gases.

Kulp, Thomas Jan (Livermore, CA); Kliner, Dahv A. V. (San Ramon, CA); Sommers, Ricky (Oakley, CA); Goers, Uta-Barbara (Campbell, NY); Armstrong, Karla M. (Livermore, CA)

2006-12-19T23:59:59.000Z

90

Rf capacitively-coupled electrodeless light source  

DOE Patents [OSTI]

An rf capacitively-coupled electrodeless light source is provided. The light source comprises a hollow, elongated chamber and at least one center conductor disposed within the hollow, elongated chamber. A portion of each center conductor extends beyond the hollow, elongated chamber. At least one gas capable of forming an electronically excited molecular state is contained within each center conductor. An electrical coupler is positioned concentric to the hollow, elongated chamber and the electrical coupler surrounds the portion of each center conductor that extends beyond the hollow, elongated chamber. A rf-power supply is positioned in an operable relationship to the electrical coupler and an impedance matching network is positioned in an operable relationship to the rf power supply and the electrical coupler.

Manos, Dennis M. (Williamsburg, VA); Diggs, Jessie (Norfolk, VA); Ametepe, Joseph D. (Roanoke, VA); Fugitt, Jock A. (Livingston, TX)

2000-01-01T23:59:59.000Z

91

The upgraded scheme of Hefei Light Source  

SciTech Connect (OSTI)

To enhance the performance of Hefei Light Source, which was designed and constructed two decades ago, an upgrade project would be carried out in the near future. The detail upgrade scheme was described in this paper. Firstly, the magnet lattice of storage ring should be reconstructed with 4 DBA cells, whose advantages are lower beam emittance and more straight section available for insertion devices. Secondly, the beam diagnostics, main power supply, transverse and longitudinal multi-bunch feedback, beam control and manipulation system would be upgrade to improve the beam orbit stability. Finally, the injection system of storage ring and injector, which is composed of electron linac and beam transfer line, would be updated in order to assure smooth beam accumulation process under new low emittance lattice. With above improvement, it is hopeful to increase the brilliance of Hefei Light Source by two orders approximately. After three-year upgrade project, the performance of HLS would meet the demands of advanced SR users.

Li Weimin; Xu Hongliang; Wang Lin; Feng Guangyao; Zhang Shancai; Hao Hao [National Synchrotron Radiation Laboratory of University of Science and Technology of China, Anhui (China)

2010-06-23T23:59:59.000Z

92

Algorithms to Automate LCLS Undulator Tuning  

SciTech Connect (OSTI)

Automation of the LCLS undulator tuning offers many advantages to the project. Automation can make a substantial reduction in the amount of time the tuning takes. Undulator tuning is fairly complex and automation can make the final tuning less dependent on the skill of the operator. Also, algorithms are fixed and can be scrutinized and reviewed, as opposed to an individual doing the tuning by hand. This note presents algorithms implemented in a computer program written for LCLS undulator tuning. The LCLS undulators must meet the following specifications. The maximum trajectory walkoff must be less than 5 {micro}m over 10 m. The first field integral must be below 40 x 10{sup -6} Tm. The second field integral must be below 50 x 10{sup -6} Tm{sup 2}. The phase error between the electron motion and the radiation field must be less than 10 degrees in an undulator. The K parameter must have the value of 3.5000 {+-} 0.0005. The phase matching from the break regions into the undulator must be accurate to better than 10 degrees. A phase change of 113 x 2{pi} must take place over a distance of 3.656 m centered on the undulator. Achieving these requirements is the goal of the tuning process. Most of the tuning is done with Hall probe measurements. The field integrals are checked using long coil measurements. An analysis program written in Matlab takes the Hall probe measurements and computes the trajectories, phase errors, K value, etc. The analysis program and its calculation techniques were described in a previous note. In this note, a second Matlab program containing tuning algorithms is described. The algorithms to determine the required number and placement of the shims are discussed in detail. This note describes the operation of a computer program which was written to automate LCLS undulator tuning. The algorithms used to compute the shim sizes and locations are discussed.

Wolf, Zachary

2010-12-03T23:59:59.000Z

93

The JLab high power ERL light source  

SciTech Connect (OSTI)

A new THz/IR/UV photon source at Jefferson Lab is the first of a new generation of light sources based on an Energy-Recovered, (superconducting) Linac (ERL). The machine has a 160 MeV electron beam and an average current of 10 mA in 75 MHz repetition rate hundred femtosecond bunches. These electron bunches pass through a magnetic chicane and therefore emit synchrotron radiation. For wavelengths longer than the electron bunch the electrons radiate coherently a broadband THz {approx} half cycle pulse whose average brightness is > 5 orders of magnitude higher than synchrotron IR sources. Previous measurements showed 20 W of average power extracted[1]. The new facility offers simultaneous synchrotron light from the visible through the FIR along with broadband THz production of 100 fs pulses with >200 W of average power. The FELs also provide record-breaking laser power [2]: up to 10 kW of average power in the IR from 1 to 14 microns in 400 fs pulses at up to 74.85 MHz repetition rates and soon will produce similar pulses of 300-1000 nm light at up to 3 kW of average power from the UV FEL. These ultrashort pulses are ideal for maximizing the interaction with material surfaces. The optical beams are Gaussian with nearly perfect beam quality. See www.jlab.org/FEL for details of the operating characteristics; a wide variety of pulse train configurations are feasible from 10 microseconds long at high repetition rates to continuous operation. The THz and IR system has been commissioned. The UV system is to follow in 2005. The light is transported to user laboratories for basic and applied research. Additional lasers synchronized to the FEL are also available. Past activities have included production of carbon nanotubes, studies of vibrational relaxation of interstitial hydrogen in silicon, pulsed laser deposition and ablation, nitriding of metals, and energy flow in proteins. This paper will present the status of the system and discuss some of the discoveries we have made concerning the physics performance, design optimization, and operational limitations of such a first generation high power ERL light source.

G.R. Neil; C. Behre; S.V. Benson; M. Bevins; G. Biallas; J. Boyce; J. Coleman; L.A. Dillon-Townes; D. Douglas; H.F. Dylla; R. Evans; A. Grippo; D. Gruber; J. Gubeli; D. Hardy; C. Hernandez-Garcia; K. Jordan; M.J. Kelley; L. Merminga; J. Mammosser; W. Moore; N. Nishimori; E. Pozdeyev; J. Preble; R. Rimmer; Michelle D. Shinn; T. Siggins; C. Tennant; R. Walker; G.P. Williams and S. Zhang

2005-03-19T23:59:59.000Z

94

Advanced Light Source: Activity report 1993  

SciTech Connect (OSTI)

The Advanced Light Source (ALS) produces the world`s brightest light in the ultraviolet and soft x-ray regions of the spectrum. The first low-energy third-generation synchrotron source in the world, the ALS provides unprecedented opportunities for research in science and technology not possible anywhere else. This year marked the beginning of operations and the start of the user research program at the ALS, which has already produced numerous high quality results. A national user facility located at Lawrence Berkeley Laboratory of the University of California, the ALS is available to researchers from academia, industry, and government laboratories. This report contains the following: (1) director`s message; (2) operations overview; (3) user program; (4) users` executive committee; (5) industrial outreach; (6) accelerator operations; (7) beamline control system; (8) insertion devices; (9) experimental systems; (10) beamline engineering; (11) first results from user beamlines; (12) beamlines for 1994--1995; (13) special events; (14) publications; (15) advisory panels; and (16) ALS staff.

Not Available

1994-11-01T23:59:59.000Z

95

The 4th Generation Light Source at Jefferson Lab  

SciTech Connect (OSTI)

A number of "Grand Challenges" in Science have recently been identified in reports from The National Academy of Sciences, and the U.S. Dept. of Energy, Basic Energy Sciences. Many of these require a new generation of linac-based light source to study dynamical and non-linear phenomena in nanoscale samples. In this paper we present a summary of the properties of such light sources, comparing them with existing sources, and then describing in more detail a specific source at Jefferson Lab. Importantly, the JLab light source has developed some novel technology which is a critical enabler for other new light sources.

Stephen Benson; George Biallas; James Boyce; Donald Bullard; James Coleman; David Douglas; H. Dylla; Richard Evans; Pavel Evtushenko; Albert Grippo; Christopher Gould; Joseph Gubeli; David Hardy; Carlos Hernandez-Garcia; Kevin Jordan; John Klopf; Steven Moore; George Neil; Thomas Powers; Joseph Preble; Daniel Sexton; Michelle D. Shinn; Christopher Tennant; Richard Walker; Shukui Zhang; Gwyn Williams

2007-04-25T23:59:59.000Z

96

Status of the SAGA Light Source  

SciTech Connect (OSTI)

The SAGA Light Source (SAGA-LS) is a synchrotron radiation facility consisting of a 255 MeV injector linac and a 1.4 GeV storage ring that is 75.6 m in circumference. The SAGA-LS has been stably providing synchrotron radiation to users since it first started user operation in February 2006. Along with the user operation, various machine improvements have been made over the past years, including upgrading the injector linac control system, replacing a septum magnet and constructing a beam diagnostic system. In addition to these improvements, insertion devices have been developed and installed. An APPLE-II type variable polarization undulator was installed in 2008. To address the demand from users for high-flux hard x-rays, a superconducting 4 T class wiggler is being developed. An experimental setup for generating MeV photons by laser Compton scattering is being constructed for beam monitoring and future user experiments.

Kaneyasu, T.; Takabayashi, Y.; Iwasaki, Y.; Koda, S. [SAGA Light Sources, 8-7 Yayoigaoka, Tosu, Saga 841-0005 (Japan)

2010-06-23T23:59:59.000Z

97

Energy Sources and Light Curves of Macronovae  

E-Print Network [OSTI]

A macronova (kilonova) was discovered with short gamma-ray burst, GRB 130603B, which is widely believed to be powered by the radioactivity of $r$-process elements synthesized in the ejecta of a neutron star binary merger. As an alternative, we propose that macronovae are energized by the central engine, i.e., a black hole or neutron star, and the injected energy is emitted after the adiabatic expansion of ejecta. This engine model is motivated by extended emission of short GRBs. In order to compare the theoretical models with observations, we analytically formulate the light curves of macronovae. The engine model allows a wider parameter range, especially smaller ejecta mass, and better fit to observations than the $r$-process model. Future observations of electromagnetic counterparts of gravitational waves should distinguish energy sources and constrain the activity of central engine and $r$-process nucleosynthesis.

Kisaka, Shota; Takami, Hajime

2014-01-01T23:59:59.000Z

98

Simulations of Ion Migration in the LCLS RF Gun and Injector  

SciTech Connect (OSTI)

The motivation for this work was the observed surface contamination of the first LCLS RF gun copper cathode. We will present the results of simulations in regards to ion migration in the LCLS gun. Ions of residual gases will be created by interaction of molecular gas species with the UV drive laser beam and by the electron beam itself. The larger part of those ionized molecules remain in the vicinity of creation, are transported towards beam line walls or away from the cathode. However a small fraction gains enough kinetic energy, focused by RF and magnetic fields and propagates to the cathode, producing an undesirable increase of the cathode's surface work function. Although this fraction is small, during long term operation, this effect may become a significant factor limiting the source performance.

Brachmann, Axel; /SLAC; Dowell, David; /SLAC

2012-06-25T23:59:59.000Z

99

Ideas for Future Synchrotron Light Sources  

E-Print Network [OSTI]

of very-high-brightness electron sources, it is anticipatedcharacteristics for the electron source, given in u_ble 1.Table 1 Electron Source Characteristics Characteristic f

Jackson, A.

2011-01-01T23:59:59.000Z

100

Lighting Group: Sources and Ballasts: HID Lighting Systems  

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

Ballasts and Controls for HID Lighting Ballasts and Controls for HID Lighting Systems Evaluation of Electronic Ballasts and Related Controls for HID Lighting Systems Objective HID ballast The goal of this project is to evaluate the potential of electronic ballasts and related controls for HID lighting systems to improve the efficiency of current technology. The specific objectives of this project are to: Test, analyze and determine the potential of electronic ballasts for HID lighting systems in cooperation with manufacturers as an emerging energy efficient technology to reduce lighting loads in commercial, industrial and municipal applications. Identify control strategies to further improve the energy efficiency of these systems with a municipal partner. Provide appropriate recommendations for incorporating these technologies into current state codes and regulations.

Note: This page contains sample records for the topic "light source lcls" 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

Installing a Light Source 'Racetrack' | Department of Energy  

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

Installing a Light Source 'Racetrack' Installing a Light Source 'Racetrack' Installing a Light Source 'Racetrack' March 22, 2011 - 10:42am Addthis Brookhaven National Lab's NSLS II Construction Site | Photo Courtesy of Brookhaven National Lab Brookhaven National Lab's NSLS II Construction Site | Photo Courtesy of Brookhaven National Lab Kendra Snyder This month, workers at Brookhaven National Laboratory's National Synchrotron Light Source II (NSLS-II), the half-mile electron racetrack for one of the world's most advanced light sources, will begin filling the facility's steel and concrete shell. In 2015, NSLS-II will open its doors - and its ultra-bright beams of x-ray, infrared and ultraviolet light - to thousands of researchers around the world, enabling the detailed exploration of everything from

102

Installing a Light Source 'Racetrack' | Department of Energy  

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

Installing a Light Source 'Racetrack' Installing a Light Source 'Racetrack' Installing a Light Source 'Racetrack' March 22, 2011 - 10:42am Addthis Brookhaven National Lab's NSLS II Construction Site | Photo Courtesy of Brookhaven National Lab Brookhaven National Lab's NSLS II Construction Site | Photo Courtesy of Brookhaven National Lab Kendra Snyder This month, workers at Brookhaven National Laboratory's National Synchrotron Light Source II (NSLS-II), the half-mile electron racetrack for one of the world's most advanced light sources, will begin filling the facility's steel and concrete shell. In 2015, NSLS-II will open its doors - and its ultra-bright beams of x-ray, infrared and ultraviolet light - to thousands of researchers around the world, enabling the detailed exploration of everything from

103

A Web Site about the International Light Source Community  

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

A Web Site about the International Light Source Community A Web Site about the International Light Source Community On February 17, 2005, the international light source community, including the Advanced Photon Source at Argonne National Laboratory, launched the first website dedicated to providing the media, general public, and scientific community with the latest news and information about and from the world's accelerator-driven light sources (synchrotrons and free-electron lasers) and about the science carried out by users of these facilities. The web site - www.lightsources.org - was developed and is jointly maintained by the lightsource.org Collaboration, whose members represent the world's light source facilities in Europe, North America, and Asia. Support for the project is provided by science funding agencies of many

104

Inorganic volumetric light source excited by ultraviolet light  

DOE Patents [OSTI]

The invention relates to a composition for the volumetric generation of radiation. The composition comprises a porous substrate loaded with a component capable of emitting radiation upon interaction with an exciting radiation. Preferably, the composition is an aerogel substrate loaded with a component, e.g., a phosphor, capable of interacting with exciting radiation of a first energy, e.g., ultraviolet light, to produce radiation of a second energy, e.g., visible light.

Reed, Scott (Albuquerue, NM); Walko, Robert J. (Albuquerue, NM); Ashley, Carol S. (Albuquerue, NM); Brinker, C. Jeffrey (Albuquerue, NM)

1994-01-01T23:59:59.000Z

105

The Phase I MX Beamlines at Diamond Light Source  

SciTech Connect (OSTI)

Three beamlines dedicated to macromolecular crystallography, I02, I03 and I04 at Diamond Light Source are presented. These beamlines formed the life science component of Phase 1 of Diamond Light Source. The article provides details of the design and the current status of the beamlines.

Duke, E. M. H.; Evans, G.; Flaig, R.; Hall, D. R.; Latchem, M.; McAuley, K. E.; Sandy, D. J.; Sorensen, T. L-M.; Waterman, D.; Johnson, L. N. [Diamond Light Source, Harwell Science and Innovation Campus, Didcot, Oxon. OX11 0DE (United Kingdom)

2010-06-23T23:59:59.000Z

106

Location of Maximum Credible Beam Losses in LCLS Injector  

SciTech Connect (OSTI)

The memo describes the maximum credible beam the LCLS injector can produce and lose at various locations along the beamline. The estimation procedure is based upon three previous reports [1, 2, 3]. While specific numbers have been updated to accurately reflect the present design parameters, the conclusions are very similar to those given in Ref 1. The source of the maximum credible beam results from the explosive electron emission from the photocathode if the drive laser intensity exceeds the threshold for plasma production. In this event, the gun's RF field can extract a large number of electrons from this plasma which are accelerated out of the gun and into the beamline. This electron emission persists until it has depleted the gun of all its energy. Hence the number of electrons emitted per pulse is limited by the amount of stored RF energy in the gun. It needs to be emphasized that this type of emission is highly undesirable, as it causes permanent damage to the cathode.

Mao, Stan

2010-12-13T23:59:59.000Z

107

Photon Sciences | About the National Synchrotron Light Source  

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

Source Source NSLS One of the world's most widely used scientific research facilities, the National Synchrotron Light Source (NSLS) is host each year to 2,400 researchers from more than 400 universities, laboratories, and companies. Research conducted at the NSLS has yielded advances in biology, physics, chemistry, geophysics, medicine, and materials science. Synchrotron light is produced by electrons when they are forced to move in a curved path at nearly the speed of light. At the NSLS, beams of light in the x-ray, ultraviolet, and infrared wavelengths are produced by two synchrotrons for use in experiments. Powerful Light, Diverse Research Since the intensity of synchrotron light can be 10,000 times greater than conventional beams generated in a laboratory, scientists can use these

108

Lighting Group: Sources and Ballasts: OLED Cathodes  

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

OLED Cathodes OLED Cathodes Development of New Cathodes for OLED's Objective The objective of this project is to develop improved cathodes for use in organic light emitting diodes (OLEDs). Approach A major challenge for organic light emitting diode (OLED) technology is to improve electron injection into the organic electroluminescent layer, which limits the efficiency of the device and the luminous flux per unit area. This project aims at overcoming such barriers by developing “structured cathodes” based on functional materials (nanotubes and nanoclusters) with characteristic size smaller than the optical wavelength. The incorporation of such nanostructured cathodes in OLEDs can significantly improve device efficiency by lowering operating voltage, and increase device stability and light extraction.

109

Designing subwavelength-structured light sources  

E-Print Network [OSTI]

The laser has long been established as the best possible optical source for fundamental studies and applications requiring high field intensity, single mode operation, a high degree of coherence, a narrow linewidth and ...

Chua, Song Liang

2013-01-01T23:59:59.000Z

110

Lighting system combining daylight concentrators and an artificial source  

DOE Patents [OSTI]

A combined lighting system for a building interior includes a stack of luminescent solar concentrators (LSC), an optical conduit made of preferably optical fibers for transmitting daylight from the LSC stack, a collimating lens set at an angle, a fixture for receiving the daylight at one end and for distributing the daylight as illumination inside the building, an artificial light source at the other end of the fixture for directing artifical light into the fixture for distribution as illumination inside the building, an automatic dimmer/brightener for the artificial light source, and a daylight sensor positioned near to the LSC stack for controlling the automatic dimmer/brightener in response to the daylight sensed. The system also has a reflector positioned behind the artificial light source and a fan for exhausting heated air out of the fixture during summer and for forcing heated air into the fixture for passage into the building interior during winter.

Bornstein, Jonathan G. (Miami, FL); Friedman, Peter S. (Toledo, OH)

1985-01-01T23:59:59.000Z

111

Synchronization System for Next Generation Light Sources  

SciTech Connect (OSTI)

An alternative synchronization technique – one that would allow explicit control of the pulse train including its repetition rate and delay is clearly desired. We propose such a scheme. Our method is based on optical interferometry and permits synchronization of the pulse trains generated by two independent mode-locked lasers. As the next generation x-ray sources will be driven by a clock signal derived from a mode-locked optical source, our technique will provide a way to synchronize x-ray probe with the optical pump pulses.

Zavriyev, Anton

2014-03-27T23:59:59.000Z

112

Large area, surface discharge pumped, vacuum ultraviolet light source  

DOE Patents [OSTI]

Large area, surface discharge pumped, vacuum ultraviolet (VUV) light source is disclosed. A contamination-free VUV light source having a 225 cm{sup 2} emission area in the 240-340 nm region of the electromagnetic spectrum with an average output power in this band of about 2 J/cm{sup 2} at a wall-plug efficiency of approximately 5% is described. Only ceramics and metal parts are employed in this surface discharge source. Because of the contamination-free, high photon energy and flux, and short pulse characteristics of the source, it is suitable for semiconductor and flat panel display material processing. 3 figs.

Sze, R.C.; Quigley, G.P.

1996-12-17T23:59:59.000Z

113

National Synchrotron Light Source II Project Progress Report  

E-Print Network [OSTI]

, power supply procurement, BPM electronics testing, and controls system design. With details of technical'S ASSESSMENT FEBRUARY 2010 OVERALL ASSESSMENT The National Synchrotron Light Source II project maintained excellent technical progress and satisfactory cost and schedule performance. The DOE Independent Project

Ohta, Shigemi

114

Microsoft Word - Science and Technology of Future Light Sources...  

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

0839 BNL-81895-2008 LBNL-1090E-2009 SLAC-R-917 Science and Technology of Future Light Sources A White Paper Report prepared by scientists from ANL, BNL, LBNL and SLAC. The...

115

A Next Generation Light Source Facility at LBNL  

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

A Next Generation Light Source Facility at LBNL A Next Generation Light Source Facility at LBNL Author: Corlett, J.N. Publication Date: 04-12-2011 Publication Info: Lawrence Berkeley National Laboratory Permalink: http://escholarship.org/uc/item/81t3h97w Keywords: NGLS, FEL, 2 GeV superconducting linear accelerator, high-brightness, highrepetition- rate, high- repetition-rate (1 MHz) Local Identifier: LBNL Paper LBNL-4391E Preferred Citation:

116

New Directions in X-Ray Light Sources  

ScienceCinema (OSTI)

July 15, 2008 Berkeley Lab lecture: Molecular movies of chemical reactions and material phase transformations need a strobe of x-rays, the penetrating light that reveals how atoms and molecules assemble in chemical and biological systems and complex materials. Roger Falcone, Director of the Advanced Light Source,will discuss a new generation of x ray sources that will enable a new science of atomic dynamics on ultrafast timescales.

Roger Falcone

2010-01-08T23:59:59.000Z

117

Comparative study of energy saving light sources  

Science Journals Connector (OSTI)

Techno-economic performance comparison of compact fluorescent lamps (CFL) with light emitting diodes (LED), electrode less fluorescent lamps (EEFL), fluorescent tubes, incandescent bulbs, photovoltaic (PV) and fiber optic lighting systems was carried out in view of worsening power and energy crisis in Pakistan. Literature survey showed 23 W CFL, 21 W EEFL, 18 W fluorescent tube or 15 W LED lamps emit almost same quantity of luminous flux (lumens) as a standard 100 W incandescent lamp. All inclusive, operational costs of LED lamps were found 1.21, 1.62. 1.69, 6.46, 19.90 and 21.04 times lesser than fluorescent tubes, CFL, EEFL, incandescent bulbs, fiber optic solar lighting and PV systems, respectively. However, tubes, LED, CFL and EEFL lamps worsen electric power quality of low voltage networks due to high current harmonic distortions (THD) and poor power factors (PF). Fluorescent lamps emit UV and pollute environment by mercury and phosphors when broken or at end of their life cycle. Energy consumption, bio-effects, and environmental concerns prefer LED lamps over phosphor based lamps but power quality considerations prefer EEFL. CFL and EEFL manufacturers claim operating temperatures in range of ?20 °C LED lamps may be five to ten times higher that high THD and low PF lamps. Choice of a lamp depends upon its current THD, PF, life span, energy consumption, efficiency, efficacy, color rendering index (CRI) and associated physical effects. This work proposes manufacturing and user level innovations to get rid of low PF problems. Keeping in view downside of phosphor based lamps our research concludes widespread adoption of LED lamps. Government and commercial buildings may consider full spectrum hybrid thermal photovoltaic and solar fiber optic illumination systems.

N. Khan; N. Abas

2011-01-01T23:59:59.000Z

118

Advanced Photon Source, Canadian Light Source Strengthen Ties, Expand X-ray  

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

Rose of APS and CNM One of Four DOE Early Career Award Winners 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 Gerig to Chair Particle Accelerator School Board APS News Archives: 2012 | 2011 | 2010 | 2009 2008 | 2007 | 2006 | 2005 2004 | 2003 | 2002 | 2001 2000 Subscribe to APS News rss feed Advanced Photon Source, Canadian Light Source Strengthen Ties, Expand X-ray Technology and Research JUNE 18, 2012 Bookmark and Share The interiors of the Canadian Light Source (top) and Advanced Photon Source experiment halls. (CLS photo courtesy of Canadian Light Source) Seeking to solve some of today's greatest global problems, scientists using x-ray light source facilities at national research laboratories in

119

National Synchrotron Light Source annual report 1991  

SciTech Connect (OSTI)

This report discusses the following research conducted at NSLS: atomic and molecular science; energy dispersive diffraction; lithography, microscopy and tomography; nuclear physics; UV photoemission and surface science; x-ray absorption spectroscopy; x-ray scattering and crystallography; x-ray topography; workshop on surface structure; workshop on electronic and chemical phenomena at surfaces; workshop on imaging; UV FEL machine reviews; VUV machine operations; VUV beamline operations; VUV storage ring parameters; x-ray machine operations; x-ray beamline operations; x-ray storage ring parameters; superconducting x-ray lithography source; SXLS storage ring parameters; the accelerator test facility; proposed UV-FEL user facility at the NSLS; global orbit feedback systems; and NSLS computer system.

Hulbert, S.L.; Lazarz, N.M. (eds.)

1992-04-01T23:59:59.000Z

120

A Test Beamline on Diamond Light Source  

SciTech Connect (OSTI)

A Test beamline B16 has been built on the 3 GeV Diamond synchrotron radiation source. The beamline covers a wide photon energy range from 2 to 25 keV. The beamline is highly flexible and versatile in terms of the available beam size (a micron to 100 mm) and the range of energy resolution and photon flux; by virtue of its several operational modes, and the different inter-changeable instruments available in the experiments hutch. Diverse experimental configurations can be flexibly configured using a five-circle diffractometer, a versatile optics test bench, and a suite of detectors. Several experimental techniques including reflectivity, diffraction and imaging are routinely available. Details of the beamline and its measured performance are presented.

Sawhney, K. J. S.; Dolbnya, I. P.; Tiwari, M. K.; Alianelli, L.; Scott, S. M.; Preece, G. M.; Pedersen, U. K.; Walton, R. D. [Diamond Light Source Ltd, Harwell Science and Innovation Campus, Didcot, Oxfordshire-OX11 0DE (United Kingdom)

2010-06-23T23:59:59.000Z

Note: This page contains sample records for the topic "light source lcls" 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

Source Attribution of Light Absorbing Aerosol in Arctic Snow  

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

Source Attribution of Light Absorbing Source Attribution of Light Absorbing Aerosol in Arctic Snow (Preliminary analysis of 2008-2009 data) Outline * Receptor modeling overview * Results from 2007 data set * New goals arising from analysis of 2007 data * New data for 2008 * New data for 2009 * Tentative conclusions * Future analysis i Factor profiles from 2007 analysis Source attribution of Black Carbon from 2007 analysis Goals/Issues suggested by the analysis of the 2007 data set * Are there seasonal differences in the source strengths? * Are there other LAA chemical components besides black carbon. What are their sources? * Can the various data sets available (e.g., 2007, 2008, 2009) be combined in a single large PMF analysis 2008 Data Set For Receptor Analysis * 42 samples from Eastern Siberia including 4 depth profiles

122

Advanced Light Source (ALS) | U.S. DOE Office of Science (SC...  

Office of Science (SC) Website

Syncrotron Light Source (NSLS-II) Stanford Synchrotron Radiation Light Source (SSRL) Neutron Scattering Facilities Nanoscale Science Research Centers (NSRCs) Projects...

123

National Syncrotron Light Source (NSLS-II) | U.S. DOE Office...  

Office of Science (SC) Website

Syncrotron Light Source (NSLS-II) Stanford Synchrotron Radiation Light Source (SSRL) Neutron Scattering Facilities Nanoscale Science Research Centers (NSRCs) Projects...

124

X-Ray Light Sources | U.S. DOE Office of Science (SC)  

Office of Science (SC) Website

Syncrotron Light Source (NSLS-II) Stanford Synchrotron Radiation Light Source (SSRL) Neutron Scattering Facilities Nanoscale Science Research Centers (NSRCs) Projects...

125

Theoretical investigation of a tunable free-electron light source  

SciTech Connect (OSTI)

The concept and experimental results of a light source given in a recent paper by Adamo et al.[Phys. Rev. Lett. 103, 113901 (2009)] are very interesting and attractive. Our paper presents detailed theoretical investigations on such a light source, and our results confirm that the mechanism of the light radiation experimentally detected in the published paper is a special kind of diffraction radiation in a waveguide with nanoscale periodic structure excited by an electron beam. The numerical calculations based on our theory and digital simulations agree well with the experimental results. This mechanism of diffraction radiation is of significance in physics and optics, and may bring good opportunities for the generation of electromagnetic waves from terahertz to light frequency regimes.

Liu Shenggang; Hu Min; Zhang Yaxin; Liu Weihao; Zhang Ping; Zhou Jun [Terahertz Research Center, University of Electronic Science and Technology of China, Chengdu 610054 (China)

2011-06-15T23:59:59.000Z

126

Theoretical investigation of a tunable free-electron light source  

Science Journals Connector (OSTI)

The concept and experimental results of a light source given in a recent paper by Adamo et al. [Phys. Rev. Lett. 103, 113901 (2009)] are very interesting and attractive. Our paper presents detailed theoretical investigations on such a light source, and our results confirm that the mechanism of the light radiation experimentally detected in the published paper is a special kind of diffraction radiation in a waveguide with nanoscale periodic structure excited by an electron beam. The numerical calculations based on our theory and digital simulations agree well with the experimental results. This mechanism of diffraction radiation is of significance in physics and optics, and may bring good opportunities for the generation of electromagnetic waves from terahertz to light frequency regimes.

Shenggang Liu; Min Hu; Yaxin Zhang; Weihao Liu; Ping Zhang; Jun Zhou

2011-06-30T23:59:59.000Z

127

Light Sources Help Discover New Drug Against Melanoma | Department of  

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

Light Sources Help Discover New Drug Against Melanoma Light Sources Help Discover New Drug Against Melanoma Light Sources Help Discover New Drug Against Melanoma July 18, 2011 - 12:07pm Addthis The new anti-cancer drug, vemurafenib, is the green honeycomb structure at middle left. Four dotted red lines show where it attaches to a target area in the mutated enzyme, disabling it from promoting the growth of tumors. | Image courtesy of Plexxikon Inc. The new anti-cancer drug, vemurafenib, is the green honeycomb structure at middle left. Four dotted red lines show where it attaches to a target area in the mutated enzyme, disabling it from promoting the growth of tumors. | Image courtesy of Plexxikon Inc. Mike Ross Science Writer at SLAC National Accelerator Laboratory What does this mean for me? A new drug designed to fight melanoma was discovered thanks to the

128

GE Uses DOE Advanced Light Sources to Develop Revolutionary Battery  

Office of Science (SC) Website

GE Uses DOE Advanced Light Sources to Develop GE Uses DOE Advanced Light Sources to Develop Revolutionary Battery Technology Discovery & Innovation Stories of Discovery & Innovation Brief Science Highlights SBIR/STTR Highlights Contact Information Office of Science U.S. Department of Energy 1000 Independence Ave., SW Washington, DC 20585 P: (202) 586-5430 06.13.11 GE Uses DOE Advanced Light Sources to Develop Revolutionary Battery Technology Company is constructing a new battery factory in Upstate New York that is expected to create 300+ jobs. Print Text Size: A A A Subscribe FeedbackShare Page Click to enlarge photo. Enlarge Photo GE's new Image courtesy of GE GE's new "Durathon(tm)" sodium metal halide battery. The story of American manufacturing over the past two decades has too often been a tale of outsourcing, off-shoring, and downsizing-not least in

129

Structural biology research at the National Synchroton Light Source  

SciTech Connect (OSTI)

The world`s foremost facility for scientific research using x-rays and ultraviolet and infrared radiation is operated by the national synchrotron Light Source Department. This year alone, a total of 2200 guest researchers performed experiments at the world`s largest source of synchrotron light. Researchers are trying to define the three- dimensional structures of biological macromolecules to create a map of life, a guide for exploring the biological and chemical interactions of the vast variety of molecules found in living organisms. Studies in structural biology may lead to new insights into how biological systems are formed and nourished, how they survive and grow, how they are damaged and die. This document discusses some the the structural biological research done at the National Synchrotron Light Source.

NONE

1996-05-01T23:59:59.000Z

130

Synchrotron radiation as a light source in confocal microscopy  

Science Journals Connector (OSTI)

The optical properties of a confocal scanning microscope that was designed to utilize a synchrotron as light source are presented. The usable spectral range is from 200 nm up to 700 nm. Using 325?nm laser light it is shown that the lateral resolution is about 125 nm and the axial resolution better than 250 nm. After transport of the microscope from Utrecht to the Daresbury Synchrotron Source 200?nm excitation can be applied and the lateral resolution will drop to below 100 nm.

C. J. R. van der Oord; H. C. Gerritsen; Y. K. Levine; W. J. Myring; G. R. Jones; I. H. Munro

1992-01-01T23:59:59.000Z

131

Advanced Light Source Activity Report 1997/1998  

SciTech Connect (OSTI)

This Lawrence Berkeley National Laboratory, Advanced Light Source (ALS) activity report for 1997/98 discusses the following topics: Introduction and Overview; Science Highlights; Facility Report; Special Events; ALS Advisory Panels 1997/98; ALS Staff 1997/98 and Facts and Figures for the year.

Greiner, Annette (ed.)

1999-03-01T23:59:59.000Z

132

Superconducting RF Linac Technology for ERL Light Sources  

SciTech Connect (OSTI)

Energy Recovering Linacs (ERLs) offer an attractive alternative as drivers for light sources as they combine the desirable characteristics of both storage rings (high efficiency) and linear accelerators (superior beam quality). Using superconducting RF technology allows ERLs to operate more efficiently because of the inherent characteristics of SRF linacs, namely that they are high gradient-low impedance structures and their ability to operate in the long pulse or CW regime. We present an overview of the physics challenges encountered in the design and operation of ERL based light sources with particular emphasis on those issues related to SRF technology. These challenges include maximizing a cavity�������¢����������������s Qo to increase cryogenic efficiency, maintaining control of the cavity field in the presence of the highest feasible loaded Q and providing adequate damping of the higher-order modes (HOMs). If not sufficiently damped, dipole HOMs can drive the multipass beam breakup (BBU) instability which ERLs are particularly susceptible to. Another challenge involves efficiently extracting the potentially large amounts of HOM power that are generated when a bunch traverses the SRF cavities and which may extend over a high range of frequencies. We present experimental data from the Jefferson Lab FEL Upgrade, a 10 mA ERL light source presently in operation, aimed at addressing some of these issues. We conclude with an outlook towards the future of ERL based light sources.

Chris Tennant

2005-08-01T23:59:59.000Z

133

Photonic crystal fibre-based light source for STED lithography  

SciTech Connect (OSTI)

A light source having a relative noise level in the order of 10{sup -6} and sufficient stability for application in STED lithography has been obtained using the generation of Cherenkov peaks in a supercontinuum spectrum. (laser applications and other topics in quantum electronics)

Glubokov, D A; Sychev, V V; Vitukhnovsky, Alexey G; Korol'kov, A E

2013-06-30T23:59:59.000Z

134

Photon Sciences | Operating the National Synchrotron Light Source,  

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

Industrial Collaborators Industrial Collaborators The National Synchrotron Light Source (NSLS) and its future successor, NSLS-II, can help companies large and small solve research and manufacturing problems, generate new technologies and products, and stay competitive. The Photon Sciences Directorate would like to encourage greater use of its facilities by industrial researchers and facilitate collaborations between industry and NSLS staff, as well as government and academic institutions. Synchrotron Use by Industry What is a synchrotron? A synchrotron light source is a large machine that produces intense beams of infrared, ultraviolet, and x-ray light for the study of substances at very small scales, from looking at the molecular structure of proteins to probing the electronic properties of the next generation of computer-chip

135

National Synchrotron Light Source annual report 1991. Volume 2, October 1, 1990--September 30, 1991  

SciTech Connect (OSTI)

This report contains abstracts from research conducted at the national synchrotron light source. (LSP)

Hulbert, S.L.; Lazarz, N.N. [eds.

1992-04-01T23:59:59.000Z

136

Lighting Group: Sources and Ballasts: LED Reflector Lamp  

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

LED Reflector Lamp LED Reflector Lamp LED Reflector Lamp Objective LED reflector lamp The goal of this project is to develop a revolutionary new reflector lamp which offers many advantages over current incandescent reflector lamps, including: three times greater efficiency ten times the rated life greater optical and performance properties use of light emitting diodes (LEDs) to generate the light. Although LEDs have been commercially available since the late 1960Â’s, recent dramatic improvements in LED technology have led to white light devices with efficiencies that meet or exceed those of a standard incandescent lamp. This project will build upon these improvements to develop a new type of source for focusing light. Contact Information For more information on this project, please contact:

137

NSLS II: The Future National Synchrotron Light Source  

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

2011 Call for Beamline Development Proposals 2011 Call for Beamline Development Proposals National Synchrotron Light Source II February 16, 2011 NSLS-II Rendering Critical Dates Call for proposal issued Thursday, February 17, 2011 Letter of Intent due Monday, March 28, 2011 (submitted LOIs) Beamline development workshops April-June 2011 Beamline proposal due Monday, July 25, 2011 Related Materials Proposal template NSLS-II Beamline Development Policy NSLS-II Source Properties NSLS-II User Access Policy Project Beamlines Background Beamline Information Approved Proposals From 2010 The National Synchrotron Light Source II (NSLS-II), currently under construction at the U.S. Department of Energys Brookhaven National Laboratory on Long Island, NY, is pleased to announce the 2011 Call for Beamline Development Proposals for experimental facilities to be implemented at NSLS-II.

138

Water an Unusual Liquid; LCLS Provides New Insights | Stanford Synchrotron  

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

Water an Unusual Liquid; LCLS Provides New Insights Water an Unusual Liquid; LCLS Provides New Insights Wednesday, November 13, 2013 - 3:00pm SLAC, Redtail Hawk Conference Room 108A Anders Nilsson, SUNCAT The anomalous physical properties of water are responsible for sustaining much of life on earth; for example, water displays a higher heat capacity than common liquids and expands upon freezing. Some of these anomalous physical properties become dramatically enhanced upon supercooling below the freezing point. In particular, extrapolations of the thermal expansion coefficient, isothermal compressibility, heat capacity and correlation length can all be fitted with a power law divergence with the same apparent singularity temperature of about 228 K. Experiments on pure bulk water below about ~240 K have so far been difficult: water crystallization occurs

139

The advanced light source: America`s brightest light for science and industry  

SciTech Connect (OSTI)

America`s brightest light comes from the Advanced Light Source (ALS), a national facility for scientific research, product development, and manufacturing. Completed in 1993, the ALS produces light in the ultraviolet and x-ray regions of the spectrum. Its extreme brightness provides opportunities for scientific and technical progress not possible anywhere else. Technology is poised on the brink of a major revolution - one in which vital machine components and industrial processes will be drastically miniaturized. Industrialized nations are vying for leadership in this revolution - and the huge economic rewards the leaders will reap.

Cross, J.; Lawler, G.

1994-03-01T23:59:59.000Z

140

Insertion devices for the Advanced Light Source at LBL  

SciTech Connect (OSTI)

The Advanced Light Source (ALS) at the Lawrence Berkeley Laboratory will be the first of the new generation of dedicated synchrotron light sources to be put into operation. Specially designed insertion devices will be required to realize the high brightness photon beams made possible by the low emittance of the electron beam. The complement of insertion devices on the ALS will include undulators with periods as short as 3.9 cm and one or more high field wigglers. The first device to be designed is a 5 m long, 5 cm period, hybrid undulator. The goal of very high brightness and high harmonic output imposes unusually tight tolerances on the magnetic field quality and thus on the mechanical structure. The design process, using a generic structure for all undulators, is described. 5 refs., 4 figs., 1 tab.

Hassenzahl, W.; Chin, J.; Halbach, K.; Hoyer, E.; Humphries, D.; Kincaid, B.; Savoy, R.

1989-03-01T23:59:59.000Z

Note: This page contains sample records for the topic "light source lcls" 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

6 GeV light source project cost estimating procedure  

SciTech Connect (OSTI)

To maintain uniformity in estimating the cost requirements of the various components of the 6 GeV Light Source, the following procedure will be used by all the task groups. The procedure uses a Work Breakdown Structure (VBS) to break down the project into manageable, easy to estimate, components. The project is first broken down into major tasks or categories. Then each major division is continuously subdivided until the desired level of detail is achieved. This can be shown best by using the example of the WBS of the Aladdin Upgrade Project, excerpts of which are included in Appendix A.

NONE

1985-10-23T23:59:59.000Z

142

Energy Secretary Moniz Dedicates the World’s Brightest Synchrotron Light Source  

Broader source: Energy.gov [DOE]

U.S. Department of Energy (DOE) Secretary Ernest Moniz today dedicated the world’s most advanced light source, the National Synchrotron Light Source II (NSLS-II) at Brookhaven National Laboratory (BNL).

143

Inverse free electron laser accelerator for advanced light sources  

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

We discuss the inverse free electron laser (IFEL) scheme as a compact high gradient accelerator solution for driving advanced light sources such as a soft x-ray free electron laser amplifier or an inverse Compton scattering based gamma-ray source. In particular, we present a series of new developments aimed at improving the design of future IFEL accelerators. These include a new procedure to optimize the choice of the undulator tapering, a new concept for prebunching which greatly improves the fraction of trapped particles and the final energy spread, and a self-consistent study of beam loading effects which leads to an energy-efficient high laser-to-beam power conversion.

Duris, J. P.; Musumeci, P.; Li, R. K.

2012-06-01T23:59:59.000Z

144

PHOTOINJECTED ENERGY RECOVERY LINAC UPGRADE FOR THE NATIONAL SYNCHROTRON LIGHT SOURCE *  

E-Print Network [OSTI]

PHOTOINJECTED ENERGY RECOVERY LINAC UPGRADE FOR THE NATIONAL SYNCHROTRON LIGHT SOURCE * Ilan Ben of the National Synchrotron Light Source (NSLS). This upgrade will be based on the Photoinjected Energy Recovering limitations. First, the emittance of a storage ring based light source is proportional to the energy

Brookhaven National Laboratory

145

Terahertz Light Source and User Area at FACET  

SciTech Connect (OSTI)

FACET at SLAC provides high charge, high peak current, low emittance electron beam that is bunched at THz wavelength scale during its normal operation. A THz light source based coherent transition radiation (CTR) from this beam would potentially be the brightest short-pulse THz source ever constructed. Efforts have been put into building this photon source together with a user area, to provide a platform to utilize this unique THz radiation for novel nonlinear and ultrafast phenomena researches and experiments. Being a long-time underutilized portion of the electromagnetic spectrum, terahertz (100 GHz {approx} 10 THz) spectral range is experiencing a renaissance in recent years, with broad interests from chemical and biological imaging, material science, telecommunication, semiconductor and superconductor research, etc. Nevertheless, the paucity of THz sources especially strong THz radiation hinders both its commercial applications and nonlinear processes research. FACET - Facilities for Accelerator science and Experimental Test beams at SLAC - provides 23 GeV electron beam with peak currents of {approx} 20 kA that can be focused down to 100 {mu}m{sup 2} transversely. Such an intense electron beam, when compressed to sub-picosecond longitudinal bunch length, coherently radiates high intensity EM fields well within THz frequency range that are orders of magnitude stronger than those available from laboratory tabletop THz sources, which will enable a wide variety of THz related research opportunities. Together with a description of the FACET beamline and electron beam parameters, this paper will report FACET THz radiation generation via coherent transition radiation and calculated photon yield and power spectrum. A user table is being set up along the THz radiation extraction sites, and equipped with various signal diagnostics including THz power detector, Michelson interferometer, sample stages, and sets of motorized optical components. This setup will also be presented. Potential THz research areas including studies of magnetism, ferroelectric switching dynamics, semiconductor devices and chemical reaction controls have already been proposed for the FACET THz area.

Wu, Z.; Li, S.Z.; Litos, M.; Fisher, A.D.; Hogan, M.J.; /SLAC

2011-11-08T23:59:59.000Z

146

National Synchrotron Light Source A View of Brookhaven  

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

managed for the U.S. Department of Energy managed for the U.S. Department of Energy by Brookhaven Science Associates, a company founded by Stony Brook University and Battelle managed for the U.S. Department of Energy by Brookhaven Science Associates, a company founded by Stony Brook University and Battelle National Synchrotron Light Source A View of Brookhaven Brookhaven National Laboratory is a multipurpose re- search laboratory funded by the U.S. Department of En- ergy. Located on a 5,300-acre site on Long Island, New York, the Laboratory operates large-scale facilities for studies in physics, chemistry, biology, medicine, applied science, and advanced technology. Brookhaven's 2,600 scientists, engineers, and support staff are joined each year by more than 5,000 visiting research- ers from around the world.

147

Compact light source performance in recessed type luminaires  

SciTech Connect (OSTI)

Photometric comparisons were made with an indoor, recessed, type luminaire using incandescent, high intensity discharge and compact fluorescent lamps. The test results show substantial performance advantages, as expected, for the discharge light sources where the efficacy gains can be in the order for 400% even when including the ballast losses associated with the discharge lamps. The candlepower distribution patterns emerging from these luminaries are also different from those associated with the baseline incandescent lamps, and which are in some ways, even more desirable from a uniformity of illuminance perspective. A section on fluorescent lamp starting is also included which describes a system having excellent starting characteristics in terms of electrode starting temperature (RH/RC technique), proper operating frequency to minimize unwanted IR interactions, and satisfactory current crest factor values to help insure life performance.

Hammer, E.E.

1998-11-01T23:59:59.000Z

148

Shedding Light on Protein Drug Interactions | Advanced Photon Source  

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

Science Highlights Archives: 2013 | 2012 | 2011 | 2010 Science Highlights Archives: 2013 | 2012 | 2011 | 2010 2009 | 2008 | 2007 | 2006 2005 | 2004 | 2003 | 2002 2001 | 2000 | 1998 | Subscribe to APS Science Highlights rss feed Shedding Light on Protein Drug Interactions JANUARY 23, 2008 Bookmark and Share In this e-coli cell, the proteins (shown in blue) crowd around ribosomes (purple). These regions have a high concentration of protein, typically greater than 30 percent, which limits the ensemble of states into which the proteins can bend themselves. Download hi-res image.) Proteins, the biological molecules that are involved in virtually every action of every organism, may themselves move in surprising ways, according to a recent study carried out at the Biophysics Collaborative Access Team x-ray beamline 18-ID at the Advanced Photon Source, a national user

149

National Synchrotron Light Source guidelines for the conduct of operations  

SciTech Connect (OSTI)

To improve the quality and uniformity of operations at the Department of Energy`s facilities, the DOE issued Order 5480.19 ``Conduct of Operations Requirements at DOE facilities.`` This order recognizes that the success of a facilities mission critically depends upon a high level of performance by its personnel and equipment. This performance can be severely impaired if the facility`s Conduct of Operations pays inadequate attention to issues of organization, safety, health, and the environment. These guidelines are Brookhaven National Laboratory`s and the National Synchrotron Light Source`s acknowledgement of the principles of Conduct of Operations and the response to DOE Order 5480.19. These guidelines cover the following areas: (1) operations organization and administration; (2) shift routines and operating practices; (3) control area activities; (4) communications; (5) control of on-shift training; (6) investigation of abnormal events; (7) notifications; (8) control of equipment and system studies; (9) lockouts and tagouts; (10) independent verification; (11) log-keeping; (12) operations turnover; (13) operations aspects of facility process control (14) required reading; (15) timely orders to operators; (16) operations procedures; (17) operator aid posting; and (18) equipment sizing and labeling.

Buckley, M. [Brookhaven National Lab., Upton, NY (United States). National Synchrotron Light Source

1998-01-01T23:59:59.000Z

150

Electron-beam-driven nanoscale metamaterial light sources  

Science Journals Connector (OSTI)

We show experimentally that beams of free electrons can induce light emission from nanoscale planar photonic metamaterials. Wavelengths of emitted light are determined by both the...

Adamo, Giorgio; Ou, Jun-Yu; MacDonald, Kevin; De Angelis, Francesco; Di Fabrizio, Enzo; Zheludev, Nikolay

151

LCLS CDR Chapter 5 - FEL Parameters and Performance  

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

5 5 FEL Parameters and Performance TECHNICAL SYNOPSIS The FEL parameter optimization and performance characterizations that are described in Chapter 5 are based on three-dimensional theory and computer models. The investigation led to a selection of the best parameters and to a study of the sensitivity to changes in values of accelerator components and beam characteristics and to unavoidable imperfections in the settings of the beam characteristics, magnetic and mechanical components and electron beam monitoring. The focusing of the electron beam plays an important role in the production of the FEL radiation. The LCLS undulator optics has been optimized in terms of its focusing lattice and strength. The electron optics consists of FODO cells; with cell lengths between 7.3 m and 7.5 m.

152

UNIVERSITY OF COLORADO BOULDER Light from the Sun is the largest source of energy  

E-Print Network [OSTI]

's atmosphere. The Solar Influences group at LASP studies the light from the Sun and how it interacts · How solar light affects Earth's climate and atmosphere · The ways solar light affects space weatherUNIVERSITY OF COLORADO BOULDER Light from the Sun is the largest source of energy for Earth

Mojzsis, Stephen J.

153

X-Ray Light Sources | U.S. DOE Office of Science (SC)  

Office of Science (SC) Website

X-Ray Light Sources X-Ray Light Sources Scientific User Facilities (SUF) Division SUF Home About User Facilities X-Ray Light Sources Neutron Scattering Facilities Nanoscale Science Research Centers Electron-Beam Microcharacterization Centers Accelerator & Detector Research & Development Principal Investigators' Meetings Scientific Highlights Construction Projects BES Home User Facilities X-Ray Light Sources Print Text Size: A A A RSS Feeds FeedbackShare Page This activity supports the operation of five DOE light sources. The unique properties of synchrotron radiation include its continuous spectrum, high flux and brightness, and in the case of the Linac Coherent Light Source, high coherence, which makes it an indispensable tool in the exploration of matter. The wavelengths of the emitted photons span a range of dimensions

154

Vacuum system for the LBL advanced light source (ALS)  

SciTech Connect (OSTI)

A 1.5 to 1.9 GeV synchrotron light source is being built at LBL. The vacuum system is designed to permit all synchrotron photons on the median plane to escape the electron channel and go into an antechamber through a 10 mm high slot. This slot offers effective RF isolation between the electron duct and the antechamber. All unused synchrotron photons within a few mrad of the median plane will be stopped by 96 nearly horizontal absorbers located in the antechamber. The gas, generated by the photons hitting the absorbers, will be directed down to reactive titanium surfaces. Twelve 10 meter long vessels constitute the vacuum chambers for all the lattice magnets. Each chamber will be machined from two thick plates of 5083-H321 aluminum and welded at the perimeter. The nominal wall thickness of the vacuum chamber is 40 mm, which makes it possible to machine a flange into the chamber without the use of welding. 5 refs., 5 figs.

Kennedy, K.

1988-05-01T23:59:59.000Z

155

Final Report, Photocathodes for High Repetition Rate Light Sources  

SciTech Connect (OSTI)

This proposal brought together teams at Brookhaven National Laboratory (BNL), Lawrence Berkeley National Laboratory (LBNL) and Stony Brook University (SBU) to study photocathodes for high repetition rate light sources such as Free Electron Lasers (FEL) and Energy Recovery Linacs (ERL). The work done under this grant comprises a comprehensive program on critical aspects of the production of the electron beams needed for future user facilities. Our program pioneered in situ and in operando diagnostics for alkali antimonide growth. The focus is on development of photocathodes for high repetition rate Free Electron Lasers (FELs) and Energy Recovery Linacs (ERLs), including testing SRF photoguns, both normal-conducting and superconducting. Teams from BNL, LBNL and Stony Brook University (SBU) led this research, and coordinated their work over a range of topics. The work leveraged a robust infrastructure of existing facilities and the support was used for carrying out the research at these facilities. The program concentrated in three areas: a) Physics and chemistry of alkali-antimonide cathodes b) Development and testing of a diamond amplifier for photocathodes c) Tests of both cathodes in superconducting RF photoguns and copper RF photoguns

Ben-Zvi, Ilan [Stony Brook University

2014-04-20T23:59:59.000Z

156

Biological soft X-ray tomography on beamline 2.1 at the Advanced Light Source  

Science Journals Connector (OSTI)

Beamline 2.1, a transmission soft X-ray microscope at the Advanced Light Source of Lawrence Berkeley National Laboratory, is described.

Le Gros, M.A.

2014-10-01T23:59:59.000Z

157

Energy Recovered Light Source Technology at TJNAF | U.S. DOE...  

Office of Science (SC) Website

Energy Recovered Light Source Technology at TJNAF Nuclear Physics (NP) NP Home About Research Facilities Science Highlights Benefits of NP Applications of Nuclear Science...

158

The light-emitting diode (LED) is an fairly new kind of light source found currently in  

E-Print Network [OSTI]

this technology an ideal replacement for less efficient incandescent light sources, particularly in applications elevator lighting has the potential to achieve 25 percent greater efficiency than current incandescent ILLUMINATION LEVELS SIMILAR TO THOSE OF INCANDESCENT FIXTURES WHILE CUTTING ENERGY USE 45 PERCENT. ELEVATOR

159

Doppler effects of a light source on a metamaterial slab: a rigorous Green's function approach  

Science Journals Connector (OSTI)

We apply a (rigorous) Green's function theory to study the Doppler effects of a light source placed on top of a metamaterial slab. When the receiver is in motion with the source and...

Wang, Weihua; Huang, Xueqin; Zhou, Lei; Chan, C T

2008-01-01T23:59:59.000Z

160

Dielectric Wakefield Accelerator to drive the future FEL Light Source.  

SciTech Connect (OSTI)

X-ray free-electron lasers (FELs) are expensive instruments and a large part of the cost of the entire facility is driven by the accelerator. Using a high-energy gain dielectric wake-field accelerator (DWA) instead of the conventional accelerator may provide a significant cost saving and reduction of the facility size. In this article, we investigate using a collinear dielectric wakefield accelerator to provide a high repetition rate, high current, high energy beam to drive a future FEL x-ray light source. As an initial case study, a {approx}100 MV/m loaded gradient, 850 GHz quartz dielectric based 2-stage, wakefield accelerator is proposed to generate a main electron beam of 8 GeV, 50 pC/bunch, {approx}1.2 kA of peak current, 10 x 10 kHz (10 beamlines) in just 100 meters with the fill factor and beam loading considered. This scheme provides 10 parallel main beams with one 100 kHz drive beam. A drive-to-main beam efficiency {approx}38.5% can be achieved with an advanced transformer ratio enhancement technique. rf power dissipation in the structure is only 5 W/cm{sup 2} in the high repetition rate, high gradient operation mode, which is in the range of advanced water cooling capability. Details of study presented in the article include the overall layout, the transform ratio enhancement scheme used to increase the drive to main beam efficiency, main wakefield linac design, cooling of the structure, etc.

Jing, C.; Power, J.; Zholents, A. (Accelerator Systems Division (APS)); ( HEP); (LLC)

2011-04-20T23:59:59.000Z

Note: This page contains sample records for the topic "light source lcls" 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

High-Efficiency Nitride-Based Photonic Crystal Light Sources  

Broader source: Energy.gov [DOE]

The University of California Santa Barbara (UCSB) is maximizing the efficiency of a white LED by enhancing the external quantum efficiency using photonic crystals to extract light that would normally be confined in a conventional structure. Ultimate efficiency can only be achieved by looking at the internal structure of light. To do this, UCSB is focusing on maximizing the light extraction efficiency and total light output from light engines driven by Gallium Nitride (GaN)-based LEDs. The challenge is to engineer large overlap (interaction) between modes and photonic crystals. The project is focused on achieving high extraction efficiency in LEDs, controlled directionality of emitted light, integrated design of vertical device structure, and nanoscale patterning of lateral structure.

162

Polymer and small molecule based hybrid light source  

DOE Patents [OSTI]

An organic electroluminescent device, includes: a substrate; a hole-injecting electrode (anode) coated over the substrate; a hole injection layer coated over the anode; a hole transporting layer coated over the hole injection layer; a polymer based light emitting layer, coated over the hole transporting layer; a small molecule based light emitting layer, thermally evaporated over the polymer based light emitting layer; and an electron-injecting electrode (cathode) deposited over the electroluminescent polymer layer.

Choong, Vi-En (Carlsbad, CA); Choulis, Stelios (Nuremberg, DE); Krummacher, Benjamin Claus (Regensburg, DE); Mathai, Mathew (Monroeville, PA); So, Franky (Gainesville, FL)

2010-03-16T23:59:59.000Z

163

Micro optical fiber light source and sensor and method of fabrication thereof  

DOE Patents [OSTI]

This invention relates generally to the development of and a method of fabricating a micro optical fiber light source. An optical fiber micro-light source is presented whose aperture is extremely small yet able to act as an intense light source. Light sources of this type have wide ranging applications, including use as micro-sensors in NSOM. Micro-sensor light sources have excellent detection limits as well as photo stability, reversibility, and millisecond response times. Furthermore, a method for manufacturing a micro optical fiber light source is provided. It involves the photo-chemical attachment of an optically active material onto the end surface of an optical fiber cable which has been pulled to form an end with an extremely narrow aperture. More specifically, photopolymerization has been applied as a means to photo-chemically attach an optically active material. This process allows significant control of the size of the micro light source. Furthermore, photo-chemically attaching an optically active material enables the implementation of the micro-light source in a variety of sensor applications. 4 figs.

Kopelman, R.; Tan, W.; Shi, Z.Y.

1994-11-01T23:59:59.000Z

164

Micro optical fiber light source and sensor and method of fabrication thereof  

DOE Patents [OSTI]

This invention relates generally to the development of and a method of fabricating a fiber optic micro-light source and sensor (50). An optical fiber micro-light source (50) is presented whose aperture is extremely small yet able to act as an intense light source. Light sources of this type have wide ranging applications, including use as micro-sensors (22) in NSOM. Micro-sensor light sources have excellent detection limits as well as photo stability, reversibility, and millisecond response times. Furthermore, a method for manufacturing a micro optical fiber light source is provided. It involves the photo-chemical attachment of an optically active material onto the end surface of an optical fiber cable which has been pulled to form an end with an extremely narrow aperture. More specifically, photopolymerization has been applied as a means to photo-chemically attach an optically active material (60). This process allows significant control of the size of the micro light source (50). Furthermore, photo-chemically attaching an optically active material (60) enables the implementation of the micro-light source in a variety of sensor applications.

Kopelman, Raoul (Ann Arbor, MI); Tan, Weihong (Ames, IA); Shi, Zhong-You (Ann Arbor, MI)

1997-01-01T23:59:59.000Z

165

Micro optical fiber light source and sensor and method of fabrication thereof  

DOE Patents [OSTI]

This invention relates generally to the development of and a method of fabricating a micro optical fiber light source. An optical fiber micro-light source is presented whose aperture is extremely small yet able to act as an intense light source. Light sources of this type have wide ranging applications, including use as micro-sensors in NSOM. Micro-sensor light sources have excellent detection limits as well as photo stability, reversibility, and millisecond response times. Furthermore, a method for manufacturing a micro optical fiber light source is provided. It involves the photo-chemical attachment of an optically active material onto the end surface of an optical fiber cable which has been pulled to form an end with an extremely narrow aperture. More specifically, photopolymerization has been applied as a means to photo-chemically attach an optically active material. This process allows significant control of the size of the micro light source. Furthermore, photo-chemically attaching an optically active material enables the implementation of the micro-light source in a variety of sensor applications.

Kopelman, Raoul (Ann Arbor, MI); Tan, Weihong (Ann Arbor, MI); Shi, Zhong-You (Ann Arbor, MI)

1994-01-01T23:59:59.000Z

166

Micro optical fiber light source and sensor and method of fabrication thereof  

DOE Patents [OSTI]

This invention relates generally to the development of and a method of fabricating a fiber optic micro-light source and sensor. An optical fiber micro-light source is presented whose aperture is extremely small yet able to act as an intense light source. Light sources of this type have wide ranging applications, including use as micro-sensors in NSOM. Micro-sensor light sources have excellent detection limits as well as photo stability, reversibility, and millisecond response times. Furthermore, a method for manufacturing a micro optical fiber light source is provided. It involves the photo-chemical attachment of an optically active material onto the end surface of an optical fiber cable which has been pulled to form an end with an extremely narrow aperture. More specifically, photopolymerization has been applied as a means to photo-chemically attach an optically active material. This process allows significant control of the size of the micro light source. Furthermore, photo-chemically attaching an optically active material enables the implementation of the micro-light source in a variety of sensor applications. 10 figs.

Kopelman, R.; Tan, W.; Shi, Z.Y.

1997-05-06T23:59:59.000Z

167

Current-voltage model of LED light sources Szymon Bczkowski, Stig Munk-Nielsen  

E-Print Network [OSTI]

Current-voltage model of LED light sources Szymon Bczkowski, Stig Munk-Nielsen Department of Energy shifts caused by varying magnitude of LED driving current and nonlinear relationship between intensity radiation into visible light, are gradually being replaced by light-emitting diodes. The invention of LEDs

Munk-Nielsen, Stig

168

Arrays and Cascades of Fluorescent Liquid-Liquid Waveguides: Broadband Light Sources for  

E-Print Network [OSTI]

Arrays and Cascades of Fluorescent Liquid-Liquid Waveguides: Broadband Light Sources) microchannel waveguides with liquid cores containing fluorescent dyes, excited by incident light from an external halogen bulb. Simultaneous use of multiple fluorophores in a common solution, in a single L2 light

Prentiss, Mara

169

Solar Influences Light from the Sun is the largest source of energy for Earth's  

E-Print Network [OSTI]

Solar Influences Light from the Sun is the largest source of energy for Earth's atmosphere. The Solar Influences group at LASP studies the light from the Sun and how it interacts with the Earth) · How and why light from the Sun varies in time from seconds to months to years to centuries · How solar

Mojzsis, Stephen J.

170

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

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

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

171

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

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

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

172

Electron Beam Alignment Strategy in the LCLS Undulators  

SciTech Connect (OSTI)

The x-ray FEL process puts very tight tolerances on the straightness of the electron beam trajectory (2 {micro}m rms) through the LCLS undulator system. Tight but less stringent tolerances of 80 {micro}m rms vertical and 140 {micro}m rms horizontally are to be met for the placement of the individual undulator segments with respect to the beam axis. The tolerances for electron beam straightness can only be met through beam-based alignment (BBA) based on electron energy variations. Conventional alignment will set the start conditions for BBA. Precision-fiducialization of components mounted on remotely adjustable girders and the use of beam-finder wires (BFW) will satisfy placement tolerances. Girder movement due to ground motion and temperature changes will be monitored continuously by an alignment monitoring system (ADS) and remotely corrected. This stabilization of components as well as the monitoring and correction of the electron beam trajectory based on BPMs and correctors will increase the time between BBA applications. Undulator segments will be periodically removed from the undulator Hall and measured to monitor radiation damage and other effects that might degrade undulator tuning.

Nuhn, H.-D.; Emma, P.J.; Gassner, G.L.; LeCocq, C.M.; Peters, E.; Ruland, R.E.; /SLAC

2007-01-03T23:59:59.000Z

173

Contributions of artificial lighting sources on light pollution in Hong Kong measured through a night sky brightness monitoring network  

E-Print Network [OSTI]

Light pollution is a form of environmental degradation in which excessive artificial outdoor lighting, such as street lamps, neon signs, and illuminated signboards, affects the natural environment and the ecosystem. Poorly designed outdoor lighting not only wastes energy, money, and valuable Earth resources, but also robs us of our beautiful night sky. Effects of light pollution on the night sky can be evaluated by the skyglow caused by these artificial lighting sources, through measurements of the night sky brightness (NSB). The Hong Kong Night Sky Brightness Monitoring Network (NSN) was established to monitor in detail the conditions of light pollution in Hong Kong. Monitoring stations were set up throughout the city covering a wide range of urban and rural settings to continuously measure the variations of the NSB. Over 4.6 million night sky measurements were collected from 18 distinct locations between May 2010 and March 2013. This huge dataset, over two thousand times larger than our previous survey, for...

Pun, Chun Shing Jason; Leung, Wai Yan; Wong, Chung Fai

2014-01-01T23:59:59.000Z

174

High-speed low-voltage ultraviolet light source  

Science Journals Connector (OSTI)

A novel quasi-spark gap has been designed and constructed with high-speed and low-spark voltage characteristics. Ultraviolet light generating sparks can be operated at a rate of up to...

Huang, L; Hsu, S C; Kwok, H S

1984-01-01T23:59:59.000Z

175

An Optically Stabilized Fast-Switching Light Emitting Diode as a Light Source for Functional  

E-Print Network [OSTI]

experimental setups. This paper presents a method to control the brightness of a high-power light emitting

Daniel A. Wagenaar

176

Underwater Lighting by Submerged Lasers and Incandescent Sources  

E-Print Network [OSTI]

and collimated underwater incandescent projector. The laser-collimated underwater incandescent projector used for beamBY SUBMERGED LASERS and Incandescent Sources DESCRIPTIVE

Duntley, Seibert Q

1971-01-01T23:59:59.000Z

177

Science at the Speed of Light: Advanced Photon Source  

ScienceCinema (OSTI)

An introduction and overview of the Advanced Photon Source at Argonne National Laboratory, the technology that produces the brightest x-ray beams in the Western Hemisphere, and the research carried out by scientists using those x-rays.

Murray Gibson

2010-01-08T23:59:59.000Z

178

Science at the Speed of Light: Advanced Photon Source  

SciTech Connect (OSTI)

An introduction and overview of the Advanced Photon Source at Argonne National Laboratory, the technology that produces the brightest x-ray beams in the Western Hemisphere, and the research carried out by scientists using those x-rays.

Murray Gibson

2009-06-03T23:59:59.000Z

179

2012 Publications  

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

2Publications 2Publications Sign In Launch the Developer Dashboard SLAC National Accelerator Laboratory DOE | Stanford | SLAC | SSRL | LCLS | AD | PPA | Photon Science | PULSE | SIMES LCLS : Linac Coherent Light Source An Office of 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 LCLS News User Resources Expand User Resources Instruments Expand Instruments Proposals Publications Expand Publications Schedules Machine Status Machine FAQs Safety Organization Expand Organization Directories Expand Directories Staff Resources Contact Us All Site Content Department of Energy Page Content 2012 Publications 2013 | 2012 | 2011 | 2010 | 2009 | Archive | Citations | Statistics

180

2010 Publications  

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

0Publications 0Publications Sign In Launch the Developer Dashboard SLAC National Accelerator Laboratory DOE | Stanford | SLAC | SSRL | LCLS | AD | PPA | Photon Science | PULSE | SIMES LCLS : Linac Coherent Light Source An Office of 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 LCLS News User Resources Expand User Resources Instruments Expand Instruments Proposals Publications Expand Publications Schedules Machine Status Machine FAQs Safety Organization Expand Organization Directories Expand Directories Staff Resources Contact Us All Site Content Department of Energy Page Content 2010 Publications 2013 | 2012 | 2011 | 2010 | 2009 | Archive | Citations | Statistics

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


181

Archived Publications  

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

ArchivedPublications ArchivedPublications Sign In Launch the Developer Dashboard SLAC National Accelerator Laboratory DOE | Stanford | SLAC | SSRL | LCLS | AD | PPA | Photon Science | PULSE | SIMES LCLS : Linac Coherent Light Source An Office of 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 LCLS News User Resources Expand User Resources Instruments Expand Instruments Proposals Publications Expand Publications Schedules Machine Status Machine FAQs Safety Organization Expand Organization Directories Expand Directories Staff Resources Contact Us All Site Content Department of Energy Page Content Archived Publications 2013 | 2012 | 2011 | 2010 | 2009 | Archive | Citations | Statistics

182

Status and Prospects of Coherent Light Source Developments at UVSOR-II  

SciTech Connect (OSTI)

We are developing coherent light sources at the UVSOR-II electron storage ring. We have developed a resonator type free electron laser in the visible to the deep UV range, coherent harmonic generation source in VUV range and coherent synchrotron radiation source in the terahertz range. A new five year plan has been started from FY2008, where a new 4m straight section will be created by moving the beam injection point, a new optical klystron type undulator will be installed and dedicated beam-lines will be constructed. Great advances on the coherent light source developments at the new straight section are expected.

Adachi, Masahiro; Katoh, Masahiro; Zen, Heishun; Tanikawa, Takanori [UVSOR Facility, Institute for Molecular Science, National Institute of Natural Sciences, Okazaki, 444-8585 (Japan); School of Physical Sciences, Graduate University for Advanced Sciences, Okazaki, 444-8585 (Japan); Hosaka, Masahito; Takashima, Yoshifumi; Yamamoto, Naoto; Taira, Yoshitaka [Graduate School of Engineering, Nagoya University, Nagoya, 464-8603 (Japan)

2010-06-23T23:59:59.000Z

183

Dynamics of laser-produced Sn microplasma for a high-brightness extreme ultraviolet light source  

E-Print Network [OSTI]

EUV light source is excessive in terms of power, cost, and size foot- print . An HVM lithography etendue on the order of 0.03 mm2 sr , and bright several watts of power . This means that the focal spot

Najmabadi, Farrokh

184

High-Precision Fluorimetry with a Light-Emitting Diode Source  

Science Journals Connector (OSTI)

A simple fluorimeter which uses a light-emitting diode as a source of excitation and a photodiode as a detector has been constructed and evaluated. The exceptional stability of both...

Smith, B W; Jones, B T; Winefordner, J D

1988-01-01T23:59:59.000Z

185

Heat power capacity of the internal source in light-transparent coatings of planar solar collectors  

Science Journals Connector (OSTI)

The results are presented of numerical determination of the heat power capacity of the internal source in light-transparent coatings of planar solar collectors; the power results from partial absorption ... of th...

R. R. Avezov; N. R. Avezova; S. L. Lutpullaev; K. A. Samiev…

2007-09-01T23:59:59.000Z

186

Quantum Cascade Lasers: New Resonant Tunnelling Light Sources for the Mid-Infrared  

Science Journals Connector (OSTI)

15 October 1996 research-article Quantum Cascade Lasers: New Resonant Tunnelling Light Sources...Hutchinson A. Y. Cho Recent results on quantum cascade lasers are reviewed. In these quantum devices based on resonant tunnelling the...

1996-01-01T23:59:59.000Z

187

Light source and CO2 concentration affect growth and anthocyanin content of lettuce under controlled environment  

Science Journals Connector (OSTI)

The effect of light source and CO2 concentration on the growth and anthocyanin content of lettuce (Lactuca sativa L. ‘Seonhong Jeokchukmyeon’) grown in growth chambers was examined. The plant was grown under 140 ...

Yoo Gyeong Park; Ji Eun Park…

2012-12-01T23:59:59.000Z

188

Long-Distance FBG Sensor System Using High-Speed Swept-Wavelength Light Source  

Science Journals Connector (OSTI)

A long-distance FBG sensor system using a power controlled high-speed swept-wavelength light source is proposed and demonstrated. This system can measure FBGs reflection wavelengths...

Saitoh, Takanori; Nakamura, Kenichi; Takahashi, Yoshifumi; Iida, Hiroyuki; Iki, Yoshimitsu; Miyagi, Koichiro

189

Environmental Assessment for the National Synchrotron Light Source II at Brookhaven National Laboratory  

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

NATIONAL SYNCHROTRON LIGHT SOURCE-II NATIONAL SYNCHROTRON LIGHT SOURCE-II (NSLS-II) BROOKHAVEN NATIONAL LABORATORY UPTON, NEW YORK U. S. Department Of Energy Brookhaven Site Office September 2006 DOE/EA-1558 i TABLE OF CONTENTS 1.0 PREFACE....................................................................................................................1 2.0 SUMMARY .................................................................................................................2 3.0 PURPOSE AND NEED ............................................................................................10 4.0 DESCRIPTION OF ALTERNATIVES, INCLUDING THE PROPOSED ACTION.....................................................................................................................11

190

Volume-scalable high-brightness three-dimensional visible light source  

DOE Patents [OSTI]

A volume-scalable, high-brightness, electrically driven visible light source comprises a three-dimensional photonic crystal (3DPC) comprising one or more direct bandgap semiconductors. The improved light emission performance of the invention is achieved based on the enhancement of radiative emission of light emitters placed inside a 3DPC due to the strong modification of the photonic density-of-states engendered by the 3DPC.

Subramania, Ganapathi; Fischer, Arthur J; Wang, George T; Li, Qiming

2014-02-18T23:59:59.000Z

191

Advanced light ion source extraction system for a new electron cyclotron resonance ion source geometry at Saclay  

SciTech Connect (OSTI)

One of the main goal of intense light ion injector projects such as IPHI, IFMIF, or SPIRAL2, is to produce high current beams while keeping transverse emittance as low as possible. To prevent emittance growth induced in a dual solenoid low energy transfer line, its length has to be minimized. This can be performed with the advanced light ion source extraction system concept that we are developing: a new ECR 2.45 GHz type ion source based on the use of an additional low energy beam transport (LEBT) short length solenoid close to the extraction aperture to create the resonance in the plasma chamber. The geometry of the source has been considerably modified to allow easy maintenance of each component and to save space in front of the extraction. The source aims to be very flexible and to be able to extract high current ion beams at energy up to 100 kV. A specific experimental setup for this source is under installation on the BETSI test bench, to compare its performances with sources developed up to now in the laboratory, such as SILHI, IFMIF, or SPIRAL2 ECR sources. This original extraction source concept is presented, as well as electromagnetic simulations with OPERA-2D code. Ion beam extraction in space charge compensation regime with AXCEL, and beam dynamics simulation with SOLMAXP codes show the beam quality improvement at the end of the LEBT.

Delferriere, O.; Gobin, R.; Harrault, F.; Nyckees, S.; Sauce, Y.; Tuske, O. [Commissariat a l'Energie Atomique, CEA/Saclay, DSM/IRFU, 91191 Gif/Yvette (France)

2012-02-15T23:59:59.000Z

192

Long lifetime, low intensity light source for use in nighttime viewing of equipment maps and other writings  

DOE Patents [OSTI]

A long-lifetime light source with sufficiently low intensity to be used for reading a map or other writing at nighttime, while not obscuring the user's normal night vision. This light source includes a diode electrically connected in series with a small power source and a lens properly positioned to focus at least a portion of the light produced by the diode.

Frank, Alan M. (Livermore, CA); Edwards, William R. (Modesto, CA)

1983-01-01T23:59:59.000Z

193

Real Time Tomography at the Swiss Light Source  

SciTech Connect (OSTI)

The penetrating power of X-rays coupled with the high flux of 3rd generation synchrotron sources makes X-ray tomography to excel among fast imaging methods . To exploit this asset of synchrotron sources is the motivation for setting up an ultra-fast tomography endstation at the TOMCAT beamline. The state of the art instruments at synchrotron sources offer routinely a temporal resolution of tens of seconds in tomography. For a number of applications, for example biomedical studies, the relevant time scales (breathing, heartbeat) are rather in the range of 0.5-2 seconds. To overcome motion artifacts when imaging such systems a new ultra-fast tomographic data acquisition scheme is being developed at the TOMCAT beamline. We can acquire a full set of projections at sub-second timescale in monochromatic or white-beam configuration. We present a feasibility study with the ultimate aim to achieve sub-second temporal resolution in 3D without significant deterioration of the spatial resolution. For the first time, the 3D dynamics of the very early stages of a quickly aging liquid foam can be visualised with high quality and sufficiently large field of view.

Mokso, R.; Marone, F. [Swiss Light Source, Paul Scherrer Institut, 5232 Villigen (Switzerland); Stampanoni, M. [Swiss Light Source, Paul Scherrer Institut, 5232 Villigen (Switzerland); Institute for Biomedical Engineering, University and ETH Zurich, Zurich (Switzerland)

2010-06-23T23:59:59.000Z

194

New Light on Improving Engine Efficiencies | Advanced Photon Source  

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

The Crystal Structure of a Meta-stable Intermediate Particle in Virus The Crystal Structure of a Meta-stable Intermediate Particle in Virus Assembly Increasing Magnetic Response of Ferromagnetic Semiconductors under High Pressure Better Switching Through Chemistry in Thin Ferroelectrics First Molecular-Level Enzyme Images Could Improve Breast-Cancer Therapy Science Highlights Archives: 2013 | 2012 | 2011 | 2010 2009 | 2008 | 2007 | 2006 2005 | 2004 | 2003 | 2002 2001 | 2000 | 1998 | Subscribe to APS Science Highlights rss feed New Light on Improving Engine Efficiencies MARCH 3, 2009 Bookmark and Share The DOE, as part of its Clean Coal & Natural Gas Power Systems initiative, has a "Turbines of Tomorrow" program with the Program Performance Goal to: "By 2010, develop turbine technology that is capable of efficiently

195

Photon Sciences | Operating the National Synchrotron Light Source,  

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

Science Highlights Science Highlights high-resolution scanning transmission electron microscopy image Nanocrystal Catalyst Transforms Impure Hydrogen into Electricity September 18, 2013 Brookhaven Lab scientists use simple, 'green' process to create novel core-shell catalyst that tolerates carbon monoxide in fuel cells and opens new, inexpensive pathways for zero-emission vehicles. Organic Solar Cells Shedding New Light on the 'Electron Highways' of Organic Solar Cells August 30, 2013 Researchers at Brookhaven Lab and Stony Brook University have developed a way to map out the degree of "traffic congestion" on the electron highways within the photoactive layer of organic solar cells. Li-ion Batteries For Better Li-ion Batteries, Scientists Watch One at Work August 29, 2013

196

Imaging spectroscopic analysis at the Advanced Light Source  

SciTech Connect (OSTI)

One of the major advances at the high brightness third generation synchrotrons is the dramatic improvement of imaging capability. There is a large multi-disciplinary effort underway at the ALS to develop imaging X-ray, UV and Infra-red spectroscopic analysis on a spatial scale from. a few microns to 10nm. These developments make use of light that varies in energy from 6meV to 15KeV. Imaging and spectroscopy are finding applications in surface science, bulk materials analysis, semiconductor structures, particulate contaminants, magnetic thin films, biology and environmental science. This article is an overview and status report from the developers of some of these techniques at the ALS. The following table lists all the currently available microscopes at the. ALS. This article will describe some of the microscopes and some of the early applications.

MacDowell, A. A.; Warwick, T.; Anders, S.; Lamble, G.M.; Martin, M.C.; McKinney, W.R.; Padmore, H.A.

1999-05-12T23:59:59.000Z

197

Luminescent light source for laser pumping and laser system containing same  

DOE Patents [OSTI]

The invention relates to a pumping lamp for use with lasers comprising a porous substrate loaded with a component capable of emitting light upon interaction of the component with exciting radiation and a source of exciting radiation. Preferably, the pumping lamp comprises a source of exciting radiation, such as an electron beam, and an aerogel or xerogel substrate loaded with a component capable of interacting with the exciting radiation, e.g., a phosphor, to produce light, e.g., visible light, of a suitable band width and of a sufficient intensity to generate a laser beam from a laser material.

Hamil, Roy A. (Tijeras, NM); Ashley, Carol S. (Albuquerque, NM); Brinker, C. Jeffrey (Albuquerque, NM); Reed, Scott (Albuquerque, NM); Walko, Robert J. (Albuquerque, NM)

1994-01-01T23:59:59.000Z

198

White lighting LEDs are fast replacing conventional lighting because not only are they energy efficient light sources but also can be modulated at frequencies up to 20MHz for high-speed wireless communication, especially for indoor applications.  

E-Print Network [OSTI]

are they energy efficient light sources but also can be modulated at frequencies up to 20MHz for high-speedBackground White lighting LEDs are fast replacing conventional lighting because not only wireless communication, especially for indoor applications. Moreover, using visible light as the source

Sekercioglu, Y. Ahmet

199

Photon Sciences | Operating the National Synchrotron Light Source,  

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

Program Coordinator Program Coordinator Jun Wang Physicist, Industrial Program Coordinator Phone: 344-2661 Email: junwang@bnl.gov Jun Wang is an Industrial Program Coordinator in the Photon Science Directorate at Brookhaven National Laboratory. She is working closely with industrial researchers as well as beamline staff to identify and explore new opportunities in industrial applications using synchrotron radiation. She has been leading the industrial research program including consultation, collaboration and outreach to the industrial user groups. Before joining BNL in 2008, Jun Wang was a Lead Scientist for a high-resolution high throughput powder diffraction program at the Advanced Photon Source (APS). As a Physicist at BNL, her research focuses on materials structure determination and evolution. Her expertise covers wide

200

Intrinsic Lorentz violation in Doppler effect from a moving point light source  

E-Print Network [OSTI]

Einstein's Doppler formula is not applicable when a moving point light source is close enough to the observer; for example, it may break down or cannot specify a determinate value when the point source and the observer overlap. In this paper, Doppler effect for a moving point light source is analyzed, and it is found that the principle of relativity allows the existence of intrinsic Lorentz violation. A conceptual scheme to experimentally test the point-source Doppler effect is proposed, and such a test could lead to an unexpected result that the frequency of a photon may change during propagation, which questions the constancy of Planck constant since the energy conservation in Einstein's light-quantum hypothesis must hold.

Changbiao Wang

2010-07-06T23:59:59.000Z

Note: This page contains sample records for the topic "light source lcls" 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

Light Well: ATunable Free-Electron Light Source on a Chip K. F. MacDonald,1,* Y. H. Fu,2  

E-Print Network [OSTI]

Light Well: ATunable Free-Electron Light Source on a Chip G. Adamo,1 K. F. MacDonald,1,* Y. H. Fu,2 and surface plasmon-polariton sources [1­5]. Electron- beam-induced radiation emission [6­8] is of particular-emitter displays [12]. The light well belongs to a broad family of free-electron- driven radiation sources wherein

Zheludev, Nikolay

202

Apparatus and method for compensating for electron beam emittance in synchronizing light sources  

DOE Patents [OSTI]

A focused optical beam is used to change the path length of the core electrons in electron light sources thereby boosting their efficiency of conversion of electron beam energy to light. Both coherent light in the free electron laser and incoherent light in the synchrotron is boosted by this technique. By changing the path length of the core electrons by the proper amount, the core electrons are caused to stay in phase with the electrons in the outer distribution of the electron beam. This increases the fraction of the electron beam energy that is converted to light thereby improving the efficiency of conversion of energy to light and therefore boosting the power output of the free electron laser and synchrotron. 4 figs.

Neil, G.R.

1996-07-30T23:59:59.000Z

203

6 GeV LIGHT SOURCE PROJECT COST ESTIMATING PROCEDURE LS-34  

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

GeV LIGHT SOURCE PROJECT GeV LIGHT SOURCE PROJECT COST ESTIMATING PROCEDURE LS-34 October 23, 1985 YC/AVR To maintain uniformity in estimating the cost requirements of the various components of the 6 GeV Light Source, the following procedure will be used by all the task groups. The procedure uses a Work Breakdown Structure (WBS) to break down the project into manageable, easy to estimate, components. The project is first broken down into major tasks or categories. Then each major division is continuously subdivided until the desired level of detail is achieved. This can be shown best by using the example of the WBS of the Aladdin Upgrade Project, excerpts of which are included in Appendix A. As shown in the example, the project is first divided into: 1.1 Project Management and Administration

204

Energy Recovered Light Source Technology at TJNAF | U.S. DOE Office of  

Office of Science (SC) Website

Energy Recovered Light Source Energy Recovered Light Source Technology at TJNAF 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 Recovered Light Source Technology at TJNAF Print Text Size: A A A RSS Feeds FeedbackShare Page Application/instrumentation: Energy-recovered linac/TJNAF Free Electron Laser Developed at: Thomas Jefferson National Accelerator Facility, Brookhaven National

205

Evaluation of White Light Sources For an Absolute Fiber Optic Sensor Readout System  

SciTech Connect (OSTI)

This report summarizes work done in pursuit of an absolute readout system for Fabry-Perot optics sensors such as those built both by FISO and LLNL. The use of white light results in a short coherence length reducing the ambiguity of the Fabry-Perot gap measurement which is required to readout the sensor. The light source coherence length is the critical parameter in determining the ability to build a relative or an absolute system. Optical sources such as lasers and LEDs are rather narrow in optical spectral bandwidth and have long coherence length. Thus, when used in interferometric sensor measurements, one fringe looks much like another and it is difficult to make an absolute measurement. In contrast, white light sources are much broader in spectral bandwidth and have very short coherence lengths making interferometry possible only over the coherence length, which can be 1 or 2 microns. The small number of fringes in the interferogram make it easier to calculate the centroid and to unambiguously determine the sensor gap. However, unlike LEDs and Lasers, white light sources have very low optical power when coupled into optical fibers. Although, the overall light output of a white light source can be hundreds of milliwatts to watts, it is difficult to couple more than microwatts into a 50-micron core optical fiber. In addition, white light sources have a large amount of optical power in spectrum that is not necessarily useful in terms of sensor measurements. The reflectivity of a quarter wave of Titanium Oxide is depicted in Figure 2. This coating of Titanium Oxide is used in the fabrication of the sensor. This figure shows that any light emitted at wavelengths shorter than 600 nm is not too useful for the readout system. A white light LED spectrum is depicted in Figure 3 and shows much of the spectrum below 600 nm. In addition Silicon photodiodes are usually used in the readout system limiting the longest wavelength to about 1100 nm. Tungsten filament sources may have much of their optical power at wavelengths longer than 1100 nm, which is outside the wavelength range of interest. An incandescent spectrum from a tungsten filament is depicted in Figure 4. None of this is to say that other types of readout systems couldn't be built with IR detectors and broadband coatings for the sensors. However, without reengineering the sensors, the wavelength restrictions must be tolerated.

McConaghy, C F

2003-10-10T23:59:59.000Z

206

Diffraction and Transmission Synchrotron Imaging at the German Light Source ANKA--Potential Industrial Applications  

SciTech Connect (OSTI)

Diffraction and transmission synchrotron imaging methods have proven to be highly suitable for investigations in materials research and non-destructive evaluation. The high flux and spatial coherence of X-rays from modern synchrotron light sources allows one to work using high resolution and different contrast modalities. This article gives a short overview of different transmission and diffraction imaging methods with high potential for industrial applications, now available for commercial access via the German light source ANKA (Forschungszentrum Karlsruhe) and its new department ANKA Commercial Service (ANKA COS, http://www.anka-cos.de)

Rack, Alexander; Weitkamp, Timm [Institute for Synchrotron Radiation-ANKA, Forschungszentrum Karlsruhe/K.I.T., Postfach 3640, D-76021 Karlsruhe (Germany); European Synchrotron Radiation Facility, BP 220, F-38043 Grenoble Cedex (France); Helfen, Lukas; Simon, Rolf; Luebbert, Daniel; Baumbach, Tilo [Institute for Synchrotron Radiation-ANKA, Forschungszentrum Karlsruhe/K.I.T., Postfach 3640, D-76021 Karlsruhe (Germany); Danilewsky, Andreas N. [Crystallographic Institute, University Freiburg, Hermann-Herder-Str. 5, D-79104 Freiburg (Germany)

2009-03-10T23:59:59.000Z

207

High-resolution VUV spectroscopy: New results from the Advanced Light Source  

SciTech Connect (OSTI)

Third-generation synchrotron light sources are providing photon beams of unprecedented brightness for researchers in atomic and molecular physics. Beamline 9.0.1, an undulator beamline at the Advanced Light Source (ALS), produces a beam in the vacuum-ultraviolet (VUV) region of the spectrum with exceptional flux and spectral resolution. Exciting new results from experiments in atomic and molecular VUV spectroscopy of doubly excited autoionizing states of helium, hollow lithium, and photoelectron spectroscopy of small molecules using Beamline 9.0.1 at the ALS are reported.

Schlachter, F.; Bozek, J.

1996-06-01T23:59:59.000Z

208

Watching an uniformly moving source of light using a telescope and a frequency-meter  

E-Print Network [OSTI]

We propose a scenario that involves a stationary observer who detects a point like source of light moving with constant velocity at a constant altitude, using a telescope and a frequency-meter. We derive a formula for the angular velocity at which we should rotate the axis of the telescope and a formula that relates the proper period at which the source emits successive wave crests and the proper period at which the stationary observer receives them

Bernhard Rothenstein; Ioan Damian

2005-04-04T23:59:59.000Z

209

Breaking symmetry through speed-induced beam-deflection via centrifugation of the light source  

E-Print Network [OSTI]

The experiment proposed aims to evidence and to measure the deflection of light rays induced by the source speed upon emission, and to discern it from the aberration of light rays induced by the observer speed. The method stands in creating a speed asymmetry between that of the source and that of the observer, and relies on the centrifugation of a light source at ultrahigh speed. When source and observer have the same speed, such as when being both on the same inertial system, the deflection and the aberration compensate and their net effect is null. So, in order to circumscribe the odds of inertial systems and to isolate these speed-induced effects it has instead been appealed to a centrifugal system, since it allows infringing symmetry between the source and the observer speeds. Three cases are considered. (a) Centrifugation of the source fixed at one end of the rotor arm, while the detector is fixed on the rotor axis. This configuration of the experiment aims to unveil that due to the peripheral speed of the source the beam is deflected forward, so it impinges on the centric detector slightly shifted from its position when the system was not rotating. (b) The positions of the source and the detector are interchanged, so the source peripheral speed is then null and thus no speed-induced deflection ensues, but due to the observer peripheral speed there is a speed-induced aberration since during the beam time-of-flight the detector has slightly moved side-way. However, this time the spot shifts in opposite direction and hence the effect of centrifugation is not reciprocal. (c) The source and the detector are fixed at the two ends of the rotor arms. In this case the beam deflection and aberration add, since their speed vectors have opposite directions and each shift of the spot on the detector is double since the time-of-flight is double.

G. Sardin

2004-05-22T23:59:59.000Z

210

Light Source  

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

traditionally done on very small scale resources. BES software landscape is largely ad-hoc and relies heavily on a limited number of experts to handle analysis. Diversity at...

211

X-ray Vision for Aerosol Scientists: LCLS Snapshots of Soot (Narrated)  

ScienceCinema (OSTI)

This short conceptual animation depicts how scientists can now simultaneously capture fractal morphology (structure), chemical composition and nanoscale imagery of individual aerosol particles in flight. These particles, known as "PM2.5" because they are smaller than 2.5 microns in diameter, affect climate by interacting with sunlight and impact human health by entering the lungs. The single LCLS laser pulses travel to the Atomic, Molecular and Optical Sciences (AMO) laboratory in the Near Experimental Hall. As we zoom in, we see deep inside a simplified aerosol inlet, where the complex fractal structure of the soot particles, each one completely unique, is shown. Individual soot particles are then delivered into the pulses of the LCLS beam, which destroys them. X-rays are scattered to the detector before the particle is destroyed, giving information about the morphology of the particle. Ion fragments released in the explosion are sent into a mass spectrometer, which measures their mass-to-charge ratio -- giving scientists information about the chemical composition of the particle. Many different particles are analyzed in this manner, allowing scientists to probe variations in the particles due to changes in their environment before being sent through the aerosol inlet. The final visual of aerosols emitted from a factory is representative of the goal that such LCLS aerosol dynamics experiments can provide critical feedback into modeling and understanding combustion, aerosol processes in manufacturing or aerosol effects on climate change.

None

2014-06-03T23:59:59.000Z

212

The measurement and analysis of the magnetic field of a synchrotron light source magnet  

E-Print Network [OSTI]

In this thesis a unique system is used to measure the magnetic field of a superconducting synchrotron light source magnet. The magnet measured is a superferric dipole C-magnet designed to produce a magnetic field up to 3 Tesla in magnitude. Its...

Graf, Udo Werner

2012-06-07T23:59:59.000Z

213

Thermophysical properties of saturated light and heavy water for advanced neutron source applications  

SciTech Connect (OSTI)

The Advanced Neutron Source is an experimental facility being developed by Oak Ridge National Laboratory. As a new nuclear fission research reactor of unprecedented flux, the Advanced Neutron Source Reactor will provide the most intense steady-state beams of neutrons in the world. The high heat fluxes generated in the reactor [303 MW(t) with an average power density of 4.5 MW/L] will be accommodated by a flow of heavy water through the core at high velocities. In support of this experimental and analytical effort, a reliable, highly accurate, and uniform source of thermodynamic and transport property correlations for saturated light and heavy water were developed. In order to attain high accuracy in the correlations, the range of these correlations was limited to the proposed Advanced Neutron Source Reactor's nominal operating conditions. The temperature and corresponding saturation pressure ranges used for light water were 20--300[degrees]C and 0.0025--8.5 MPa, respectively, while those for heavy water were 50--250[degrees]C and 0.012--3.9 MPa. Deviations between the correlation predictions and data from the various sources did not exceed 1.0%. Light water vapor density was the only exception, with an error of 1.76%. The physical property package consists of analytical correlations, SAS codes, and FORTRAN subroutines incorporating these correlations, as well as an interactive, easy-to-use program entitled QuikProp.

Crabtree, A.; Siman-Tov, M.

1993-05-01T23:59:59.000Z

214

Thermophysical properties of saturated light and heavy water for Advanced Neutron Source applications  

SciTech Connect (OSTI)

The Advanced Neutron Source is an experimental facility being developed by Oak Ridge National Laboratory. As a new nuclear fission research reactor of unprecedented flux, the Advanced Neutron Source Reactor will provide the most intense steady-state beams of neutrons in the world. The high heat fluxes generated in the reactor [303 MW(t) with an average power density of 4.5 MW/L] will be accommodated by a flow of heavy water through the core at high velocities. In support of this experimental and analytical effort, a reliable, highly accurate, and uniform source of thermodynamic and transport property correlations for saturated light and heavy water were developed. In order to attain high accuracy in the correlations, the range of these correlations was limited to the proposed Advanced Neutron Source Reactor`s nominal operating conditions. The temperature and corresponding saturation pressure ranges used for light water were 20--300{degrees}C and 0.0025--8.5 MPa, respectively, while those for heavy water were 50--250{degrees}C and 0.012--3.9 MPa. Deviations between the correlation predictions and data from the various sources did not exceed 1.0%. Light water vapor density was the only exception, with an error of 1.76%. The physical property package consists of analytical correlations, SAS codes, and FORTRAN subroutines incorporating these correlations, as well as an interactive, easy-to-use program entitled QuikProp.

Crabtree, A.; Siman-Tov, M.

1993-05-01T23:59:59.000Z

215

Dual-etalon cavity ring-down frequency-comb spectroscopy with broad band light source  

DOE Patents [OSTI]

In an embodiment, a dual-etalon cavity-ring-down frequency-comb spectrometer system is described. A broad band light source is split into two beams. One beam travels through a first etalon and a sample under test, while the other beam travels through a second etalon, and the two beams are recombined onto a single detector. If the free spectral ranges ("FSR") of the two etalons are not identical, the interference pattern at the detector will consist of a series of beat frequencies. By monitoring these beat frequencies, optical frequencies where light is absorbed may be determined.

Chandler, David W; Strecker, Kevin E

2014-04-01T23:59:59.000Z

216

Light is one of the most important environmental factors for plants, as it provides the source of energy for plant  

E-Print Network [OSTI]

Light is one of the most important environmental factors for plants, as it provides the source of energy for plant life. It is therefore not surprising that plants have adopted the ability to sense multiple parameters of ambient light signals, including light quantity (fluence), quality (wavelength

Deng, Xing-Wang

217

Protein Structures Through use of Superbends at the Advance Light Source |  

Office of Science (SC) Website

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

218

Advanced Photon Source lights the way to 2012 Chemistry Nobel | Argonne  

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

Advanced Photon Source lights the way to 2012 Chemistry Nobel Advanced Photon Source lights the way to 2012 Chemistry Nobel By Jared Sagoff * October 10, 2012 Tweet EmailPrint ARGONNE, Ill. - Thanks in part to research performed at the U.S. Department of Energy's (DOE) Argonne National Laboratory, the 2012 Nobel Prize in Chemistry was awarded today to Americans Brian Kobilka and Robert Lefkowitz for their work on G-protein-coupled receptors. G-protein-coupled receptors, or GPCRs, are a large family of proteins embedded in a cell's membrane that sense molecules outside the cell and activate a cascade of different cellular processes in response. They constitute key components of how cells interact with their environments and are the target of nearly half of today's pharmaceuticals. These medicines work by connecting with many of the 800 or so human GPCRs.

219

SHIELDING ESTIMATES FOR THE ANL 6.0 GeV SYNCHROTRON LIGHT SOURCE  

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

SHIELDING ESTIMATES FOR THE ANL 6.0 GeV SHIELDING ESTIMATES FOR THE ANL 6.0 GeV SYNCHROTRON LIGHT SOURCE H. J. Moe V. R. Veluri LS-55-Revised Harch 1987 2 1.0 Introduction Shielding estimates for the linac, positron converter, booster synchrotron and the positron storage ring have been computed using preliminary design information. Calculations have been made of the resulting radiation for several types of operations involving normal beam loss, as well as, certain accidental beam losses. When available, experimental data from existing accelerator and light source facilities have been used in lieu of theoretical estimates. 2.0 Shielding Design Objective The Department of Energy's basic occupational exposure limit is 5 rem per year (DOE 81). However, in its guidance for maintaining exposures "as

220

Development of an electron gun for an ERL based light source in Japan  

SciTech Connect (OSTI)

We have developed a prototype DC photoemission electron gun for a future energy recovery linac (ERL) based light source in Japan. The prototype gun is operated at up to 250 kV and is designed to deliver up to 50 mA beam current. A diagnostic beam line for emittance and bunch length measurements has been constructed. We have also designed a new 500 kV DC gun which is capable of producing up to 10 mA electron current with emittance lower than 1 mm-mrad. The high voltage terminal will be isolated by ten ceramics stacked in series. The new gun will satisfy performance required as an injector for the compact ERL, which will be constructed at KEK site as a prototype of the future ERL light source.

Nishimori, N.; Nagai, R.; Iijima, H.; Hajima, R. [Japan Atomic Energy Agency (JAEA), Tokai, Naka, Ibaraki 319-1195 (Japan); Honda, Y.; Muto, T. [High Energy Accelerator Research Organization (KEK), Oho, Tsukuba, Ibaraki 305-0801 (Japan); Kuriki, M. [Hiroshima University, Kagamiyama, Higashihiroshima, Hiroshima 739-8530 (Japan); Yamamoto, M.; Okumi, S.; Nakanishi, T. [Graduate School of Science, Nagoya University, Nagoya 464-8602 (Japan)

2009-08-04T23:59:59.000Z

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


221

Low-Level Radio Frequency System Development for the National Synchrotron Light Source II  

SciTech Connect (OSTI)

The National Synchrotron Light Source-II (NSLS-II) is a new ultra-bright 3GeV 3rd generation synchrotron radiation light source. The performance goals require operation with a beam current of 500mA and a bunch current of at least 0.5mA. The position and timing specifications of the ultra-bright photon beam imposes a set of stringent requirements on the performance of radio frequency (RF) control. In addition, commissioning and staged installation of damping wigglers and insertion devices requires the flexibility of handling varying beam conditions. To meet these requirements, a digital implementation of the LLRF is chosen, and digital serial links are planned for the system integration. The first prototype of the controller front-end hardware has been built, and is currently being tested.

Ma,H.; Rose, J.

2009-05-04T23:59:59.000Z

222

National Synchrotron Light Source users manual: Guide to the VUV and x-ray beam lines  

SciTech Connect (OSTI)

The success of the National Synchrotron Light Source in the years to come will be based, in large part, on the size of the users community and the diversity of the scientific disciplines represented by these users. In order to promote this philosophy, this National Synchrotron Light Source (NSLS) Users Manual: Guide to the VUV and X-Ray Beam Lines, has been published. This manual serves a number of purposes. In an effort to attract new research, it will present to the scientific community-at-large the current and projected architecture and capabilities of the various VUV and x-ray beam lines and storage rings. We anticipate that this publication will be updated periodically in order to keep pace with the constant changes at the NSLS.

Gmuer, N.F.; White-DePace, S.M. (eds.)

1987-08-01T23:59:59.000Z

223

Time-resolved far-infrared experiments at the National Synchrotron Light Source. Final report  

SciTech Connect (OSTI)

A facility for time-resolved infrared and far-infrared spectroscopy has been built and commissioned at the National Synchrotron Light Source. This facility permits the study of time dependent phenomena over a frequency range from 2-8000cm{sup {minus}1} (0.25 meV-1 eV). Temporal resolution is approximately 200 psec and time dependent phenomena in the time range out to 100 nsec can be investigated.

Tanner, D.B.; Reitze, D.H.; Carr, G.L.

1999-10-12T23:59:59.000Z

224

Comparison of linear optics measurement and correction methods at the Swiss Light Source  

Science Journals Connector (OSTI)

A systematic analysis of linear optics optimization using various independent methods has been performed. Three independent techniques, namely quadrupole variation, linear optics from closed orbits, and turn-by-turn measurement, have been studied at the Swiss Light Source. Furthermore, the performances are compared from various aspects including a direct comparison of the corrected optics. The limitations of the three independent methods are also presented.

M. Aiba; M. Böge; J. Chrin; N. Milas; T. Schilcher; A. Streun

2013-01-29T23:59:59.000Z

225

Publication Submission Form  

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

Pages Pages publicationsubmission Sign In Launch the Developer Dashboard SLAC National Accelerator Laboratory DOE | Stanford | SLAC | SSRL | LCLS | AD | PPA | Photon Science | PULSE | SIMES LCLS : Linac Coherent Light Source An Office of 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 LCLS News User Resources Expand User Resources Instruments Expand Instruments Proposals Publications Expand Publications Schedules Machine Status Machine FAQs Safety Organization Expand Organization Directories Expand Directories Staff Resources Contact Us All Site Content Department of Energy Page Content Publication Submission Form Th Tell LCLS about new publications Please submit this form to notify LCLS about new publications relating to

226

Electromagnetic design of the RF cavity beam position monitor for the LCLS.  

SciTech Connect (OSTI)

A high-resolution X-band cavity BPM has been developed for the LCLS. A dipole mode cavity and a monopole mode reference cavity have been designed in order to achieve micron-level accuracy of the beam position. The rf properties of the BPM as well as beam interaction with the cavities will be discussed including output power and tuning. In addition, methods will be presented for improving the isolation of the output ports to differentiate between horizontal/vertical beam motion and to reject extraneous modes from affecting the output signal. The predicted simulation results will be compared to data collected from low-power experimental tests.

Waldschmidt, G.; Lill, B.; Morrison, L.

2008-01-01T23:59:59.000Z

227

Tests of Coordinate Transfer from Magnetic to Mechanical Reference for LCLS Undulator Fiducialization  

SciTech Connect (OSTI)

Fiducialization of the LCLS undulators will be based on magnetic measurements by Hall probe. Pointed magnets, proposed by I.Vasserman for quadrupole lens fiducialization will be used as an intermediate reference. A prototype of the pointed magnet fixture has been made and tested. In this note we will describe a procedure for measuring the position of the center of the Hall probe sensitive area with respect to the undulator fiducial marks. The pointed magnet calibration procedure, a two-point algorithm for locating the magnetic center of the fixture, and test results are presented.

Levashov, Yu.

2010-12-13T23:59:59.000Z

228

Steady State Microbunching for High Brilliance and High Repetition Rate Storage Ring-Based Light Sources  

SciTech Connect (OSTI)

Electron-based light sources have proven to be effective sources of high brilliance, high frequency radiation. Such sources are typically either linac-Free Electron Laser (FEL) or storage ring types. The linac-FEL type has high brilliance (because the beam is microbunched) but low repetition rate. The storage ring type has high repetition rate (rapid beam circulation) but comparatively low brilliance or coherence. We propose to explore the feasibility of a microbunched beam in a storage ring that promises high repetition rate and high brilliance. The steady-state-micro-bunch (SSMB) beam in storage ring could provide CW sources for THz, EUV, or soft X-rays. Several SSMB mechanisms have been suggested recently, and in this report, we review a number of these SSMB concepts as promising directions for high brilliance, high repetition rate light sources of the future. The trick of SSMB lies in the RF system, together with the associated synchrotron beam dynamics, of the storage ring. Considering various different RF arrangements, there could be considered a number of scenarios of the SSMB. In this report, we arrange these scenarios more or less in order of the envisioned degree of technical challenge to the RF system, and not in the chronological order of their original references. Once the stored beam is steady-state microbunched in a storage ring, it passes through a radiator repeatedly every turn (or few turns). The radiator extracts a small fraction of the beam energy as coherent radiation with a wavelength corresponding to the microbunched period of the beam. In contrast to an FEL, this radiator is not needed to generate the microbunching (as required e.g. by SASE FELs or seeded FELs), so the radiator can be comparatively simple and short.

Chao, Alex; Ratner, Daniel; /SLAC; Jiao, Yi; /Beijing, Inst. High Energy Phys.

2012-09-06T23:59:59.000Z

229

Predicting long-term lumen maintenance life of LED light sources using a particle filter-based prognostic approach  

Science Journals Connector (OSTI)

Abstract Lumen degradation is a common failure mode in LED light sources. Lumen maintenance life, defined as the time when the maintained percentages of the initial light output fall below a failure threshold, is a key characteristic for assessing the reliability of LED light sources. Owing to the long lifetime and high reliability of LED lights sources, it is challenging to estimate the lumen maintenance life for LED light sources using traditional life testing that records failure data. This paper describes a particle filter-based (PF-based) prognostic approach based on both Sequential Monte Carlo (SMC) and Bayesian techniques to predict the lumen maintenance life of LED light sources. The lumen maintenance degradation data collected from an accelerated degradation test was used to demonstrate the prediction algorithm and methodology of the proposed PF approach. Its feasibility and prediction accuracy were then validated and compared with the TM-21 standard method that was created by the Illuminating Engineering Society of North America (IESNA). Finally, a robustness study was also conducted to analyze the initialization of parameters impacting the prediction accuracy and the uncertainties of the proposed PF method. The results show that, compared to the TM-21 method, the PF approach achieves better prediction performance, with an error of less than 5% in predicting the long-term lumen maintenance life of LED light sources.

Jiajie Fan; Kam-Chuen Yung; Michael Pecht

2015-01-01T23:59:59.000Z

230

New Soft X-ray Beamline (BL10) at the SAGA Light Source  

SciTech Connect (OSTI)

A new soft X-ray beamline (BL10) at the SAGA Light Source (SAGA-LS) was constructed at the end of 2008. Commissioning of this new beamline started at the beginning of 2009. Synchrotron radiation from a variably polarizing undulator (APPLE-II) can be used in this beamline. The obtained light is monochromatized by a varied-line-spacing plane grating monochromator with the variable included angle mechanism. Its designed resolving power and photon flux are 3,000-10,000 and 10{sup 12}-10{sup 9} photons/s at 300 mA, respectively. The performance test results were generally satisfactory. An overview of the optical design of the beamline and the current status of commissioning are reported.

Yoshimura, D.; Setoyama, H.; Okajima, T. [Beamline group, SAGA Light Source, 8-7 Yayoigaoka, Tosu, Saga 841-0005 (Japan)

2010-06-23T23:59:59.000Z

231

Philips Light Sources & Electronics is Developing an Efficient, Smaller, Cost-Effective Family of LED Drivers  

Broader source: Energy.gov [DOE]

With the help of DOE funding, Philips Light Sources & Electronics is developing a new family of LED drivers that are more efficient and cost-effective as well as smaller in size than currently available drivers. The new drivers are switch-mode power supplies that are similar to today's drivers, but with an improved design. In addition, they have a different topology—boost plus LLC—for wattages of 40W and above, but they retain the commonly used flyback topology at lower wattages.

232

X-ray holographic microscopy experiments at the Brookhaven synchrotron light source  

SciTech Connect (OSTI)

Soft x-ray holographic microscopy is discussed from an experimental point of view. Three series of measurements have been carried out using the Brookhaven 750 MeV storage ring as an x-ray source. Young slits fringes, Gabor (in line) holograms and various data pertaining to the soft x-ray performance of photographic plates are reported. The measurements are discussed in terms of the technique for recording them and the experimental limitations in effect. Some discussion is also given of the issues involved in reconstruction using visible light.

Howells, M.R.; Iarocci, M.; Kenney, J.; Kirz, J.; Rarback, H.

1983-01-01T23:59:59.000Z

233

Successful Completion of the Top-off Upgrade of the Advanced Light Source  

SciTech Connect (OSTI)

An upgrade of the Advanced Light Source (ALS) to enable top-off operation has been completed during the last four years. The final work centered around radiation safety aspects, culminating in a systematic proof that top-off operation is equally safe as decaying beam operation. Commissioning and transition to full user operations happened in late 2008 and early 2009. Top-off operation at the ALS provides a very large increase in time-averaged brightness (by about a factor of 10) as well as improvements in beam stability. The following sections provide an overview of the radiation safety rationale, commissioning results, as well as experience in user operations.

Steier, C.; Bailey, B.; Baptiste, K.; Barry, W.; Biocca, A.; Byrne, W.; Casey, P.; Chin, M.; Donahue, R.; Duarte, R.; Fahmie, M.; Gath, B.; Jacobson, S.; Julian, J.; Jung, J. Y.; Kritscher, M.; Kwiatkowski, S.; Marks, S.; McKean, P.; Mueller, R. [LBNL, Berkeley, CA 94720 (United States)

2010-06-23T23:59:59.000Z

234

National synchrotron light source. Activity report, October 1, 1994--September 30, 1995  

SciTech Connect (OSTI)

This report discusses research conducted at the National Synchrotron Light Source in the following areas: atomic and molecular science; energy dispersive diffraction; lithography, microscopy, and tomography; nuclear physics; scattering and crystallography studies of biological materials; time resolved spectroscopy; UV photoemission and surface science; x-ray absorption spectroscopy; x-ray scattering and crystallography; x-ray topography; the 1995 NSLS annual users` meeting; 17th international free electron laser conference; micro bunches workshop; VUV machine; VUV storage ring parameters; beamline technical improvements; x-ray beamlines; x-ray storage ring parameters; the NSLS source development laboratory; the accelerator test facility (ATF); NSLS facility improvements; NSLS advisory committees; NSLS staff; VUV beamline guide; and x-ray beamline guide.

Rothman, E.Z.; Hastings, J. [eds.

1996-05-01T23:59:59.000Z

235

Optical design and performance of the inelastic scattering beamline at the National Synchrotron Light Source  

SciTech Connect (OSTI)

Phase I of the X21 beamline at the National Synchrotron Light Source was commissioned during 1993. The research program at the X21 beamline is focused on the study of electronic excitations in condensed matter with total energy resolution of 0.1 eV to 1.0 eV. The source is a 27 pole hybrid wiggler. A water-cooled horizontal focusing Si(220) monochromator and a spherically bent Si(444) analyzer were installed and commissioned. At 8 keV the energy resolution of the monochromator is about 0.7 eV, and the energy resolution of the analyzer is about 0.1 eV. Results from several selected experiments are also discussed.

Kao, C.C.; Siddons, D.P.; Oversluizen, T.; Hastings, J.B. [Brookhaven National Lab., Upton, NY (United States); Hamalainen, K. [Helsinki Univ. (Finland). Dept. of Physics; Krisch, M. [European Synchrotron Radiation Facility, 38 - Grenoble (France)

1994-12-31T23:59:59.000Z

236

National synchrotron light source annual report 1987: For the period of October 1, 1986--September 30, 1987  

SciTech Connect (OSTI)

This report contains the reports and operational information of the National Synchrotron Light source facility for 1987. The reports are grouped mainly under VUV research and x-ray research. (LSP)

White-DePace, S.; Gmur, N.F.; Thomlinson, W.

1987-10-01T23:59:59.000Z

237

Plasma studies on electron cyclotron resonance light ion source at CEA/Saclay  

SciTech Connect (OSTI)

By the 90s, the CEA has undertaken to develop the production of intense light ion beams from unconfined ECR plasma. Today, three sources for IPHI, SPIRAL2, and IFMIF projects (respectively, 100 mA of H{sup +}, 8 mA of D{sup +}, and 140 mA of D{sup +}) are installed at CEA/Saclay. In order to improve performances and decrease dimensions of these sources, it is necessary to better understand the mechanisms involved in the production and extraction of particles. As a consequence, theoretical and experimental studies are being carried out. We present a theoretical study based on SOLMAXP, a home-made particle-in-cell code. The aim is to investigate the possibility of reducing the plasma chamber size without loss of beam characteristics. This code has been validated by beam intensity measurements on a permanent magnet based source, producing a proton beam of 30 mA at 40 kV on the test bench BETSI. In order to reduce experimentally the dimensions of plasma chamber, a new source, named ALISES with variable plasma chamber volume, is under assembly.

Nyckees, S.; Delferriere, O.; Duperrier, R.; Harrault, F.; Tuske, O. [CEA/Saclay, DSM/IRFU/SACM/LEDA, F-91191-Gif/Yvette (France)

2012-02-15T23:59:59.000Z

238

Abstract 4138: Fluorescence laparoscopy with an LED light source enables fluorescence-guided resection of pancreatic cancer, labeled with fluorophore-conjugated antibodies, in mouse models.  

Science Journals Connector (OSTI)

...4138: Fluorescence laparoscopy with an LED light source enables fluorescence-guided...495-nm emission filter and a Stryker L9000 LED light source 24 hours after tail vein injection...Bouvet. Fluorescence laparoscopy with an LED light source enables fluorescence-guided...

Cristina A. Metildi; Sharmeela Kaushal; George A. Luiken; Mark A. Talamini; Robert M. Hoffman; Michael Bouvet

2013-04-15T23:59:59.000Z

239

Silicon nanocrystals as light sources: stable, efficient and fast photoluminescence with suitable passivation  

Science Journals Connector (OSTI)

Silicon optoelectronics is an emerging technological platform, which holds promise for providing better performance, mostly in terms of lower dissipation losses, than the traditional electronics. However, a monolithic integrated light source is still missing since bulk silicon is a very poor light emitter due to its indirect bandgap. The situation dramatically changes when the size of the crystal is reduced down into nanometric dimension (<5 nm), when efficient room-temperature luminescence of these tiny silicon nanocrystals sets in. In this contribution, we present a study of silicon nanocrystals as light sources. We compare the photoluminescence properties of silicon nanocrystals with three different types of surface passivation (hydrogen, silicon oxide and methyl-based capping), which has substantial impact. We show that with sufficiently small sizes and suitable surface passivation, the photoluminescence properties of silicon nanocrystals can reach a level comparable with direct-bandgap semiconductor nanocrystals (radiative lifetime of 10 ns, stable macroscopic quantum yield of 20%). Apart from studying photoluminescence properties on a macroscopic level, we also carried out microscopical room-temperature single-nanocrystal photoluminescence spectroscopy experiments. These spectra revealed the occurrence of a fine structure (peaks 150 meV apart), practically identical with a structure already observed in single-nanocrystal spectra of silicon by other groups and very similar to a structure observed in a fundamentally different type of semiconductor nanocrystals (IIVI material). We propose that all these observations are linked with the same process, most probably the emission of trions in nanocrystals, although further measurements are necessary to support this claim.

Kateř ina Ků sová

2012-01-01T23:59:59.000Z

240

Operating the LCLS Gas Attenuator and Gas Detector System with Apertures of 6mm Diameter  

SciTech Connect (OSTI)

The possibility of increasing the apertures of the LCLS gas attenuator/gas detector system is considered. It is shown that increase of the apertures from 3 to 6 mm, together with 4-fold reduction of the operation pressure does not adversely affect the vacuum conditions upstream or downstream. No change of the pump speed and the lengths of the differential pumping cells is required. One minor modification is the use of 1.5 cm long tubular apertures in the end cells of the differential pumping system. Reduction of the pressure does not affect performance of the gas attenuator/gas detector system at the FEL energies below, roughly, 2 keV. Some minor performance degradation occurs at higher energies.

Ryutov, D.D.; Bionta, R.M.; Hau-Riege, S.P.; Kishiyama, K.I.; Roeben, M.D.; Shen, S.; /LLNL, Livermore; Stefan, P.M.; /SLAC; ,

2010-11-17T23:59:59.000Z

Note: This page contains sample records for the topic "light source lcls" 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

New chicane magnet design for insertion device straights at the Advanced Light Source  

SciTech Connect (OSTI)

A chicane magnet incorporating counter-rotating permanent magnet pairs together with trim coils has been designed for use in the Advanced Light Source (ALS) straights in conjunction with two insertion devices. In particular, this design is being developed for use in the existing beam line (BL) 4 elliptically polarizing undulator (EPU) straight and in the BL11 EPU straight, currently under design and construction. The purpose of the chicane is to provide a fixed angular separation between two successive EPU photon fans, and to correct steering perturbations resulting from EPU polarization state changes. Polarization changes occur on the time scale of one second; associated steering corrections must be accomplished in less than a second. Hysteresis associated with conventional iron core electromagnets prevents fast steering correction to the required precision. This consideration motivated the iron-free design presented here.

Marks, Steve; Schlueter, Ross; Anderson, David; Gath, William; Jung, Jin-Young; Robin, David; Steier, Christoph; Stevens, Troy

2001-12-10T23:59:59.000Z

242

Comparison of the Electromagnetic Spectra of Common Light Sources: A General Chemistry Laboratory Exercise  

Science Journals Connector (OSTI)

Compact fluorescent light (CFL); light emitting diode (LED). ... White LED light can be produced by mixing light from red, green, and blue LEDs. ... Students observe that the white light from a six LED flashlight array (Figure 5) arises from two major peaks and that the spectrum is less continuous than those of incandescent bulbs, but more continuous than those of CFLs. ...

Edward Maslowsky, Jr.

2013-10-03T23:59:59.000Z

243

Use of light-emitting diodes as light sources to lower energy consumption for cultivation of photosynthesizing microorganisms  

Science Journals Connector (OSTI)

Experimental data are cited for the productivity of phototrophs subjected to interrupted illumination by light-emitting diodes. It is demonstrated that a significant reduction in energy consumption for the produc...

2011-03-01T23:59:59.000Z

244

Assessing the Performance of 5mm White LED Light Sources for Developing-Country Applications  

E-Print Network [OSTI]

performance variations. Incandescent and fluorescent lightbetter than the common incandescent lamp. Off-grid lighting

Mills, Evan

2007-01-01T23:59:59.000Z

245

Lighting  

SciTech Connect (OSTI)

The lighting section of ASHRAE standard 90.1 is discussed. It applies to all new buildings except low-rise residential, while excluding specialty lighting applications such as signage, art exhibits, theatrical productions, medical and dental tasks, and others. In addition, lighting for indoor plant growth is excluded if designed to operate only between 10 p.m. and 6 a.m. Lighting allowances for the interior of a building are determined by the use of the system performance path unless the space functions are not fully known, such as during the initial stages of design or for speculative buildings. In such cases, the prescriptive path is available. Lighting allowances for the exterior of all buildings are determined by a table of unit power allowances. A new addition the exterior lighting procedure is the inclusion of facade lighting. However, it is no longer possible to trade-off power allotted for the exterior with the interior of a building or vice versa. A significant change is the new emphasis on lighting controls.

McKay, H.N. (Hayden McKay Lighting Design, New York, NY (US))

1990-02-01T23:59:59.000Z

246

The 19th ICFA Advanced Beam Dynamics Workshop on Future Light Sources  

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

ICFA2000t.GIF (31362 bytes) ICFA2000t.GIF (31362 bytes) The 19th ICFA Advanced Beam Dynamics Workshop on Future Light Sources Physics of and Science with The X-ray Free-Electron Laser (Arcidosso, Italy, September 10-15, 2000) Workshop Summary The19th Advanced ICFA Beam Dynamics Workshop on "The Physics of, and the Science with, X-Ray Free-Electron Lasers" took place in Arcidosso (Italy) from the 10th to the 15th of September, 2000. The Workshop was sponsored by the International Committee for Future Accelerators, the US Department of Energy, the University of California at Los Angeles, the Stanford Linear Accelerator Center, the Deutsches Elektronen-Synchrotron and the Lawrence Berkeley National Laboratory, together with local authorities of the Tuscany, Grosseto and Arcidosso areas. The Workshop's chairmen were M. Cornacchia (SLAC), I. Lindau (SLAC/Lund. Un.) and C. Pellegrini (UCLA). Seventy-five scientists, of which 50 are involved in the physics and technology of accelerators, free-electron lasers and x-ray optics, and 25 in the scientific applications, attended the workshop. There were plenary and parallel sessions and many lively discussions, during and after the regular workshop schedule.

247

The U5. 0 undulator design for the advanced light source at LBL  

SciTech Connect (OSTI)

The U5.0 undulator, currently under design, is the first in a series of insertion devices planned for the Advanced Light Source at LBL. U5.0 parameters include a 5 cm period, 5 m length with a 0.837 T maximum field at a 14 mm gap. A hybrid configuration utilizing Nd-Fe-B permanent magnet material and Vanadium Permendur poles is used for the magnetic structure. Construction is modular with many pole assemblies attached to a pole mount, which in turn is fastened onto one of the backing beams. Vertical field integral correction at the ends is with permanent magnet rotators. The supports structure features a 4-post configuration, a rigid base with 3 kinematic floor supports and 2 rigid 5 m long backing beams that fit within the 2.4 m high accelerator enclosure. The drive system is computer controlled utilizing a stepper motor and shaft encode coupled to a roller-screw/nut and chain drive train. Vacuum chamber design is a rigid configuration with a 10 mm vertical by 218 mm horizontal aperture of 5.5 m length. Chamber fabrication features a two-piece welded chamber of 5083 H321 aluminum. Pumping is with ion and titanium sublimation pumps. 5 figs., 1 tab.

Hoyer, E.; Chin, J.; Halbach, K.; Hassenzahl, W.; Humphries, D.; Kincaid, B.; Lancaster, H.; Plate, D.; Savoy, R.

1989-08-01T23:59:59.000Z

248

Near?field–far?field transition of a finite line source using incoherent light: A student laboratory experiment  

Science Journals Connector (OSTI)

A simple experiment employing low cost apparatus is presented which demonstrates the falloff of intensity with distance and the transition from the near field to the far field of a line source filament incandescent light bulb. A derivation of the Poynting vector as a function of the distance away from the filament is presented which shows an exact correspondence to the derivation for the electric field from a finite line charge source in electrostatics. The experimental data of power vs distance from the filament show an inverse first power of the distance falloff in the near field with a smooth transition to an inverse square law behavior in the far field in good agreement with the theoretical expression when corrections for the measured angular response of the detector are included. The experiment provides an illustration of the inverse square law falloff of intensity at large distances from the source experience with simple concepts and techniques of optical radiometry and incoherent light sources and the analogy between incoherent light sources and electrostatics in an undergraduate laboratory. An additional short experiment provides an illustration of electrical?to?optical power conversion efficiency and temperature dependent resistance associated with electron–phonon scattering in metals. A derivation of isotropic unpolarized elementary radiators from anisotropic dipole radiation is presented in the Appendix.

Xincheng Yan; Yixin Yu; Louis Shen; Keith H. Wanser

1995-01-01T23:59:59.000Z

249

Data Acquisition in a High Harmonic Generation Lab and at LCLS  

SciTech Connect (OSTI)

In this paper, we examine data acquisition in a high harmonic generation (HHG) lab and preliminary data analysis with the Cyclohexadiene Collaboration at the Linac Coherent Lightsource (LCLS) at SLAC National Accelerator Laboratory. HHG experiments have a large number of parameters that need to be monitored constantly. In particular, the pressure of the target is critical to HHG yield. However, this pressure can fluctuate wildly and without a tool to monitor it, it is difficult to analyze the correlation between HHG yield and the pressure. I used the Arduino microcontroller board and created a complementary MATLAB graphical user interface (GUI), thereby enhancing the ease with which users can acquire time-stamped parameter data. Using the Arduino, it is much easier to match the pressure to the corresponding HHG yield. Collecting data by using the Arduino and the GUI is flexible, user-friendly, and cost-effective. In the future, we hope to be able to control and monitor parts of the lab with the Arduino alone. While more parameter information is needed in the HHG lab, we needed to reduce the amount of data during the cyclohexadiene collaboration. This was achieved by sorting the data into bins and filtering out unnecessary details. This method was highly effective in that it minimized the amount of data without losing any valuable information. This effective preliminary data analysis technique will continue to be used to decrease the size of the collected data.

Hirokawa, Takako; /U. Colorado, Boulder /SLAC; ,

2011-06-22T23:59:59.000Z

250

Light emission of very low density hydrogen excited by an extremely hot light source; applications in astrophysics  

E-Print Network [OSTI]

Stromgren studied the action of an extremely hot source on a diluted pure hydrogen cloud; a very ionized, spherical hydrogen plasma surrounded by neutral atomic hydrogen is formed. A relatively thin intermediate, partially ionized, hydrogen shell, is cooled by the radiation of the atoms. Stromgren was unaware of that this plasma, similar to the plasma of a gas laser, can be superradiant at several eigen frequencies of atomic hydrogen; the superradiant rays emitted tangentially with the sphere appear resulting from a discontinuous ring because of the competition of optical modes. The superradiance intensely depopulates the excited levels, including the continuum of proton-electron collisions, by cascades of transitions combined into resonant multiphotonic transitions so that the gas is cooled brutally beyond the radius of the Stromgren sphere. The extreme brightness of the rays emitted by the source allows a multiphotonic non-resonant absorption leading in stationary states or the ionization continuum. This absorption combines with the superradiant emissions in a multiphotonic diffusion induced by the superradiant rays. Although its brightness remains higher than that of the superradiant rays, the source becomes invisible if it is observed through a small solid angle. The lines emitted inside the sphere are all the more weak as they arrive of an internal area, lower in atoms, and more reddened also by a parametric transfer of energy towards the thermal radiation catalyzed by excited atomic hydrogen present in the sphere only. The Stromgren sphere appears to help to simply explain the appearance and the spectrum of supernova 1987A.

Jacques Moret-Bailly

2008-07-19T23:59:59.000Z

251

Methods development for diffraction and spectroscopy studies of metalloenzymes at X-ray free-electron lasers  

Science Journals Connector (OSTI)

...Coherent Light Source, taking...Coherent Light Source (LCLS...radiation energy by the X-ray...developed by us to process...large sample consumption is not sustainable...Coherent Light Source (LCLS...operated for the US Department of Energy Office of...

2014-01-01T23:59:59.000Z

252

Structurally Integrated Photoluminescence-Based Lactate Sensor Using Organic Light Emitting Devices (OLEDs) as the Light Source  

SciTech Connect (OSTI)

Multianalyte bio(chemical) sensors are extensively researched for monitoring analytes in complex systems, such as blood serum. As a step towards developing such multianalyte sensors, we studied a novel, structurally integrated, organic light emitting device (OLED)-based sensing platform for detection of lactate. Lactate biosensors have attracted numerous research efforts, due to their wide applications in clinical diagnosis, athletic training and food industry. The OLED-based sensor is based on monitoring the oxidation reaction of lactate, which is catalyzed by the lactate oxidase (LOX) enzyme. The sensing component is based on an oxygen-sensitive dye, Platinum octaethyl porphyrin (PtOEP), whose photoluminescence (PL) lifetime {tau} decreases as the oxygen level increases. The PtOEP dye was embedded in a thin film polystyrene (PS) matrix; the LOX was dissolved in solution or immobilized in a sol-gel matrix. {tau} was measured as a function of the lactate concentration; as the lactate concentration increases, {tau} increases due to increased oxygen consumption. The sensors performance is discussed in terms of the detection sensitivity, dynamic range, and response time. A response time of {approx}32 sec was achieved when the LOX was dissolved in solution and kept in a closed cell. Steps towards development of a multianalyte sensor array using an array of individually addressable OLED pixels were also presented.

Chengliang Qian

2006-08-09T23:59:59.000Z

253

Breakthroughs in Practical-Sized, High Quality OLED Light Panel Source  

Broader source: Energy.gov [DOE]

General Electric Global Research has achieved a major breakthrough, developing a fully functional 2 ft. x 2 ft. light panel that produces more than 1200 lumens of quality white light with an efficacy of 15 lumens per watt. This device offers 50% better energy performance than their previous device, breaking two world records.

254

Design and Start-to-End Simulation of an X-Band RF Driven Hard X-Ray FEL with LCLS Injector  

SciTech Connect (OSTI)

In this note, it is briefly discussed the accelerator design and start-to-end 3D macro particles simulation (using ELEGANT and GENESIS) of an X-band RF driven hard X-ray FEL with LCLS injector. A preliminary design and LiTrack 1D simulation studies were presented before in an older publication [1]. In numerical simulations this X-band RF driven hard X-ray FEL achieves/exceeds LCLS-like performance in a much shorter overall length of 350 m, compared with 1200 m in the LCLS case. One key feature of this design is that it may achieve a higher final beam current of 5 kA plus a uniform energy profile, mainly due to the employment of stronger longitudinal wake fields in the last X-band RF linac [2].

Sun, Yipeng; /SLAC

2012-08-20T23:59:59.000Z

255

Energy efficiency and color quality limits in artificial light sources emulating natural illumination  

Science Journals Connector (OSTI)

We present in this work a calculation of the theoretical limits attainable for natural light emulation with regard to the joint optimization of the Luminous Efficacy of Radiation and...

Hertog, Wim; Llenas, Aleix; Quintero, Jesús M; Hunt, Charles E; Carreras, Josep

2014-01-01T23:59:59.000Z

256

On the Doppler effect for light from orbiting sources in Kerr-type metrics  

E-Print Network [OSTI]

A formula is derived for the combined motional and gravitational Doppler effect in general stationary axisymmetric metrics for a photon emitted parallel or antiparallel to the assumed circular orbital motion of its source. The same formula is derived from eikonal approximation and Killing vector approaches to elucidate connections between observational astronomy and modern Relativity. The formula yields expected results in the limits of a moving or stationary source in the exterior Kerr and Schwarzschild metrics and a moving source in flat space.

S. Cisneros; G. Goedecke; C. Beetle; M. Engelhardt

2012-03-12T23:59:59.000Z

257

Pinpointing extragalactic neutrino sources in light of recent IceCube observations  

Science Journals Connector (OSTI)

The IceCube Collaboration has recently reported the observation of a flux of high-energy astrophysical neutrinos. The angular distribution of events is consistent with an isotropic arrival direction of neutrinos which is expected for an extragalactic origin. We estimate the prospects of detecting individual neutrino sources from a quasidiffuse superposition of many extragalactic sources at the level of the IceCube observation. Unlike previous analyses, we take into account ensemble variations of the source distribution as well as the event statistics of individual sources. We show that IceCube in its present configuration is sensitive to rare ?10?8??Mpc?3?yr?1 transient source classes within five years of operation via the observation of event clusters. Identification of time-independent sources is more challenging due to larger backgrounds. We estimate that during the same period IceCube is sensitive to sparse sources with densities of ?10?6??Mpc?3 via association of events with the closest 100 sources of an ensemble. We show that a next-generation neutrino observatory with 5 times the effective area of IceCube and otherwise similar detector performance would increase the sensitivity to source densities and rates by about 2 orders of magnitude.

Markus Ahlers and Francis Halzen

2014-08-11T23:59:59.000Z

258

Light  

Science Journals Connector (OSTI)

Sunlight contains energy which can be directly converted into electricity in solar cells of various types. This is an example of what is called 'direct conversion', involving no moving parts or heat conversion processes. This chapter looks at photovoltaic and photoelectric devices and also at other ideas for using light energy, some of which operate in the infrared part of the spectrum. Solar electric power is a rapidly developing field, opening up many opportunities for novel applications, as well as requirements, including for storage, with one idea being solar-powered hydrogen production and then direct conversion to electricity in fuel cells. Direct conversion is not always efficient, and this chapter introduces the concept of 'energy return on energy invested'. In speculative mood this chapter also looks at the idea of a global grid, allowing daytime solar generation to be used on the night side of the planet.

David Elliott ? Pages 4-1 to 4-20

259

Brookhaven National Laboratory Photon Sciences -National Synchrotron Light Source Beamline Hazard Analysis -Beamline U3C  

E-Print Network [OSTI]

gloves Enclosed shoes Ergonomics concerns ­ moving/lifting Y Y Be aware of body posture, Ask for help in moving or lifting Ergonomics concerns ­ awkward postures Y Y Be aware of body posture Take frequent breaks Soldering Y Y Use a designated area, periodically clean surfaces Visible light Y Y Covers Warning

Ohta, Shigemi

260

Performance of new infrared beamline U12IR at the National Synchrotron Light Source  

E-Print Network [OSTI]

frequency limit of 2 cm 1 i.e., 60 GHz or a photon energy of 250 eV . The infrared light from infrared beamline at the NSLS and, with increasing demand for measurement time, has been followed by a series of new infrared ports presently under construction and com- missioning. This also allowed for some

Tanner, David B.

Note: This page contains sample records for the topic "light source lcls" 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

POLARIZATION AND VARIATION OF NEAR-INFRARED LIGHT FROM FERMI/LAT {gamma}-RAY SOURCES  

SciTech Connect (OSTI)

We present the results of our follow-up observation program of {gamma}-ray sources detected by the Large Area Telescope (LAT) on board the Fermi Gamma-ray Space Telescope. Twenty-six blazars and thirty-nine sources unidentified at other wavelengths were targeted at the Infrared Survey Facility 1.4 m telescope equipped with the SIRIUS/SIRPOL imager and polarimeter. H-band magnitudes of the blazars at the epoch of 2010 December-2011 February are presented, which reveal clear flux variation since the Two Micron All Sky Survey observations and can be useful data for variation analyses of these objects in longer periods. We also find that nearly half of the {gamma}-ray blazars are highly (>10%) polarized in near-infrared wavelengths. Combining the polarization and variation properties, most ({approx}90%) of the blazars are clearly distinguished from all other types of objects at high Galactic latitudes. On the other hand, we find only one highly polarized and/or variable object in the fields of unidentified sources. This object is a counterpart of the optical variable source PQV1 J131553.00-073302.0 and the radio source NVSS J131552-073301 and is a promising candidate of new {gamma}-ray blazars. From the measured polarization and variation statistics, we conclude that most of the Fermi/LAT unidentified sources are not likely similar types of objects to the known {gamma}-ray blazars.

Fujiwara, M.; Matsuoka, Y. [Graduate School of Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8602 (Japan); Ienaka, N., E-mail: matsuoka@a.phys.nagoya-u.ac.jp [Institute of Astronomy, The University of Tokyo, Osawa 2-21-1, Mitaka, Tokyo 181-0015 (Japan)

2012-10-01T23:59:59.000Z

262

Higher Order Suppressor (HOS) for the PolLux Microspectroscope Beamline at the Swiss Light Source SLS  

SciTech Connect (OSTI)

The mechanical design and performance of a device to suppress higher orders of a spherical grating monochromator at a constant deviation angle is described. The higher order suppressor (HOS) is used for a scanning transmission x-ray microspectroscope beamline (PolLux) at a bending magnet of the Swiss Light Source (SLS). The instruments allow microspectroscopy in polymer science, of biological samples in the water window as well as the study of magnetic materials with circular or linear polarized light in a photon energy range of 200 eV to 1400 eV. The HOS uses three mirrors acting as a low pass filter for soft x-rays to improve the absorption spectroscopy of carbon, oxygen and nitrogen 1s core levels. The successful installation and operation of the HOS located after the monochromator is reported. First results obtained using samples from materials research and environmental sciences exemplify the improved spectroscopy capabilities of the instrument.

Frommherz, U.; Stefani, R.; Ellenberger, U. [Paul Scherrer Institut, Division of Mechanical Engineering Sciences, 5232 Villigen PSI (Switzerland); Raabe, J.; Watts, B. [Paul Scherrer Institut, Swiss Light Source, 5232 Villigen PSI (Switzerland)

2010-06-23T23:59:59.000Z

263

Light ion source for proton/deuteron production at CEA Saclay for the Spiral2 project  

SciTech Connect (OSTI)

The production of rare radioactive ion beam (RIB) far from the valley of stability is one of the final purposes of the Spiral2 facility in Caen. The RIB will be produced by impinging a deuteron beam onto a carbon sample to produce a high neutron flux, which will interact with a uranium target. The primary deuteron beam is produced by an ion source based on ECR plasma generation. The deuteron source and the low energy beam transport (LEBT) has been assembled and tested at CEA Saclay. Diagnostics from other laboratories were implemented on the LEBT in order to characterize the deuteron beam produced and compare it to the initial simulations. The ion source has been based on a SILHI-type source, which has demonstrated good performances in pulsed and continuous mode, and also a very good reliability on long term operation. The 5 mA of deuteron beam required at the RFQ entrance is extracted from the plasma source at the energy of 40 kV. After a brief description of the experimental set-up, this article reports on the first beam characterization experiments.

Tuske, O.; Adroit, G.; Delferriere, O.; Denis, J-F.; Gauthier, Y.; Girardot, P.; Gobin, R.; Harrault, F.; Guiho, P.; Sauce, Y.; Uriot, D.; Vacher, T.; Van Hille, C. [CEA/Saclay, DSM/IRFU/SACM, F- 91191-Gif/Yvette (France); Graehling, P.; Hosselet, J.; Maazouzi, C. [IPHC, Institut Pluridisciplinaire Hubert Curien, Strasbourg (France)

2012-02-15T23:59:59.000Z

264

7 Ĺ Resolution in Protein 2-Dimentional-Crystal X-Ray Diffraction at Linac Coherent Light Source  

SciTech Connect (OSTI)

Membrane proteins arranged as two-dimensional (2D) crystals in the lipid en- vironment provide close-to-physiological structural information, which is essential for understanding the molecular mechanisms of protein function. X-ray diffraction from individual 2D crystals did not represent a suitable investigation tool because of radiation damage. The recent availability of ultrashort pulses from X-ray Free Electron Lasers (X-FELs) has now provided a mean to outrun the damage. Here we report on measurements performed at the LCLS X-FEL on bacteriorhodopsin 2D crystals mounted on a solid support and kept at room temperature. By merg- ing data from about a dozen of single crystal diffraction images, we unambiguously identified the diffraction peaks to a resolution of 7 °A, thus improving the observable resolution with respect to that achievable from a single pattern alone. This indicates that a larger dataset will allow for reliable quantification of peak intensities, and in turn a corresponding increase of resolution. The presented results pave the way to further X-FEL studies on 2D crystals, which may include pump-probe experiments at subpicosecond time resolution.

Pedrini, Bill; Tsai, Ching-Ju; Capitani, Guido; Padeste, Celestino; Hunter, Mark; Zatsepin, Nadia A.; Barty, Anton; Benner, Henry; Boutet, Sebastien; Feld, Geoffrey K.; Hau-Riege, Stefan; Kirian, Rick; Kupitz, Christopher; Messerschmidt, Marc; Ogren, John I.; Pardini, Tommaso; Segelke, Brent; Williams, Garth J.; Spence , John C.; Abela, Rafael; Coleman, Matthew A.; Evans, James E.; Schertler, Gebhard; Frank, Matthias; Li, Xiao-Dan

2014-06-09T23:59:59.000Z

265

Vacuum performance of the Synchroton Radiation Research Center 1.3 GeV synchrotron light source  

Science Journals Connector (OSTI)

The operation of the Synchrotron Radiation Research Center 1.3 GeV synchrotron light source vacuum system shows good features of quick beam self?cleaning low carbonaceous gas desorption and less dust. The phenomenon of the photon induced desorption (PID) has been studied. Recently a set of new vacuum chambers for wiggler were installed and the commissioning of the storage ring was restarted. The pressure rise and the PID coefficients during the beam running both in the straight and bending chambers were compared. The performance of the overall vacuum system is to be described.

G. Y. Hsiung; J. R. Huang; J. G. Shyy; D. J. Wang; J. R. Chen; Y. C. Liu

1996-01-01T23:59:59.000Z

266

The semiconductor diode as a rectifier, a light source, and a solar cell: A simple explanation  

Science Journals Connector (OSTI)

An explanation of the principles of a pn junction is proposed without recourse to the band model the space charge of the junction and the charge carrier depletion at the interface. The explanation assumes that the processes in a pn junction can be considered as a chemical reaction between electrons holes and photons and that an n -type material is a conductor for electrons and an insulator for holes and a p -type material is a conductor for holes and an insulator for electrons. We give a simple and concise explanation of rectification light emission and current generation by pn junctions.

F. Herrmann; P. Würfel

2006-01-01T23:59:59.000Z

267

THE Low-level Radio Frequency System for the superconducting cavities of National Synchrotron Light Source II  

SciTech Connect (OSTI)

A digital low-level radio frequency (LLRF) field controller has been developed for the storage ring of The National Synchrotron Light Source-II (NSLS-II). The primary performance goal for the LLRF is to support the required RF operation of the superconducting cavities with a beam current of 500mA and a 0.14 degree or better RF phase stability. The digital field controller is FPGA-based, in a standard format 19-inch/I-U chassis. It has an option of high-level control support with MATLAB running on a local host computer through a USB2.0 port. The field controller has been field tested with the high-power superconducting RF (SRF) at Canadian light Source, and successfully stored a high beam current of 250 mA. The test results show that required specifications for the cavity RF field stability are met. This digital field controller is also currently being used as a development platform for other functional modules in the NSLS-II RF systems.

Ma, H.; Rose, J.; Holub, B.; Cupolo, J.; Oliva, J.; Sikora, R.; Yeddulla, M.

2011-03-28T23:59:59.000Z

268

Improved charge breeding efficiency of light ions with an electron cyclotron resonance ion source  

SciTech Connect (OSTI)

The Californium Rare Isotope Breeder Upgrade is a new radioactive beam facility for the Argonne Tandem Linac Accelerator System (ATLAS). The facility utilizes a {sup 252}Cf fission source coupled with an electron cyclotron resonance ion source to provide radioactive beam species for the ATLAS experimental program. The californium fission fragment distribution provides nuclei in the mid-mass range which are difficult to extract from production targets using the isotope separation on line technique and are not well populated by low-energy fission of uranium. To date the charge breeding program has focused on optimizing these mid-mass beams, achieving high charge breeding efficiencies of both gaseous and solid species including 14.7% for the radioactive species {sup 143}Ba{sup 27+}. In an effort to better understand the charge breeding mechanism, we have recently focused on the low-mass species sodium and potassium which up to present have been difficult to charge breed efficiently. Unprecedented charge breeding efficiencies of 10.1% for {sup 23}Na{sup 7+} and 17.9% for {sup 39}K{sup 10+} were obtained injecting stable Na{sup +} and K{sup +} beams from a surface ionization source.

Vondrasek, R.; Kutsaev, Sergey [Argonne National Laboratory, Argonne, Illinois 60439 (United States); Delahaye, P.; Maunoury, L. [Grand Accelerateur National d'Ions Lourds (GANIL), CEA/DSM-CNRS/IN2P3, Blvd Henri Becquerel, 14076 Caen (France)

2012-11-15T23:59:59.000Z

269

Data of heavy elements for light sources in EUV and XUV and for other applications  

SciTech Connect (OSTI)

Atomic ionic states and transition properties of elements with atomic numbers Z ranging from 50 to 80 are discussed as these are important to the understanding of plasmas containing such heavy elements. As such, data productions and the current status of theoretical calculations in this field are discussed. Further, recent spectroscopic measurements and respective theoretical analyses for W, Gd, and Nd are provided. The spectra of photoemissions elicited by the transitions between the sub-shell levels in N-sub-shell open atomic ions are of interest for the strong influence received from the interactions between the electronic state configurations with different constituent orbitals. Visible light emissions of W from M1 as well as E2 transitions are introduced and discussed.

Koike, F. [Phys. Lab. School of Med. Kitasato University, 1-15-1 Kitasato, Sagamihara 252-0374 (Japan); Funaba, H.; Goto, M.; Kato, D.; Kato, T.; Morita, S.; Murakami, I.; Sakaue, H. A.; Sudo, S.; Suzuki, C.; Tanuma, N. [National Institute for Fusion Science, 322-6 Oroshi-cho, Toki 509-5292 (Japan); Sasaki, A. [Japan Atomic Energy Agency, 8-1-7, Umemidai, Kizugawa-shi, Kyoto 619-0215 (Japan); Ding, X. B. [College of Physics and Electronic Engineering, Northwest Normal University, Lanzhou 730070 (China)

2013-07-11T23:59:59.000Z

270

Design of a High Power Continuous Source of Broadband Down-Converted Light  

E-Print Network [OSTI]

We present the design and experimental proof of principle of a low threshold optical parametric oscillator (OPO) that continuously oscillates over a large bandwidth allowed by phase matching. The large oscillation bandwidth is achieved with a selective two-photon loss that suppresses the inherent mode competition, which tends to narrow the bandwidth in conventional OPOs. Our design performs pairwise mode-locking of many frequency pairs, in direct equivalence to passive mode-locking of ultrashort pulsed lasers. The ability to obtain high powers of continuous \\textit{and} broadband down-converted light enables the optimal exploitation of the correlations within the down-converted spectrum, thereby strongly affecting two-photon interactions even at classically high power levels, and opening new venues for applications such as two-photon spectroscopy and microscopy and optical spread spectrum communication.

Avi Pe'er; Yaron Silberberg; Barak Dayan; Asher A. Friesem

2006-08-29T23:59:59.000Z

271

Strong Einstein-Podolsky-Rosen entanglement from a single squeezed light source  

SciTech Connect (OSTI)

Einstein-Podolsky-Rosen (EPR) entanglement is a criterion that is more demanding than just certifying entanglement. We theoretically and experimentally analyze the low-resource generation of bipartite continuous-variable entanglement, as realized by mixing a squeezed mode with a vacuum mode at a balanced beam splitter, i.e., the generation of so-called vacuum-class entanglement. We find that in order to observe EPR entanglement the total optical loss must be smaller than 33.3 %. However, arbitrarily strong EPR entanglement is generally possible with this scheme. We realize continuous-wave squeezed light at 1550 nm with up to 9.9 dB of nonclassical noise reduction, which is the highest value at a telecom wavelength so far. Using two phase-controlled balanced homodyne detectors we observe an EPR covariance product of 0.502{+-}0.006<1, where 1 is the critical value. We discuss the feasibility of strong Gaussian entanglement and its application for quantum key distribution in a short-distance fiber network.

Eberle, Tobias [Max-Planck-Institut fuer Gravitationsphysik (Albert-Einstein-Institut) and Institut fuer Gravitationsphysik der Leibniz Universitaet Hannover, Callinstrasse 38, D-30167 Hannover (Germany); Centre for Quantum Engineering and Space-Time Research - QUEST, Leibniz Universitaet Hannover, Welfengarten 1, D-30167 Hannover (Germany); Haendchen, Vitus; Schnabel, Roman [Max-Planck-Institut fuer Gravitationsphysik (Albert-Einstein-Institut) and Institut fuer Gravitationsphysik der Leibniz Universitaet Hannover, Callinstrasse 38, D-30167 Hannover (Germany); Duhme, Joerg [Centre for Quantum Engineering and Space-Time Research - QUEST, Leibniz Universitaet Hannover, Welfengarten 1, D-30167 Hannover (Germany); Institut fuer Theoretische Physik der Leibniz Universitaet Hannover, Appelstrasse 2, D-30167 Hannover (Germany); Franz, Torsten; Werner, Reinhard F. [Institut fuer Theoretische Physik der Leibniz Universitaet Hannover, Appelstrasse 2, D-30167 Hannover (Germany)

2011-05-15T23:59:59.000Z

272

National Synchrotron Light Source annual report 1991. Volume 1, October 1, 1990--September 30, 1991  

SciTech Connect (OSTI)

This report discusses the following research conducted at NSLS: atomic and molecular science; energy dispersive diffraction; lithography, microscopy and tomography; nuclear physics; UV photoemission and surface science; x-ray absorption spectroscopy; x-ray scattering and crystallography; x-ray topography; workshop on surface structure; workshop on electronic and chemical phenomena at surfaces; workshop on imaging; UV FEL machine reviews; VUV machine operations; VUV beamline operations; VUV storage ring parameters; x-ray machine operations; x-ray beamline operations; x-ray storage ring parameters; superconducting x-ray lithography source; SXLS storage ring parameters; the accelerator test facility; proposed UV-FEL user facility at the NSLS; global orbit feedback systems; and NSLS computer system.

Hulbert, S.L.; Lazarz, N.M. [eds.

1992-04-01T23:59:59.000Z

273

Development of soft X-ray polarized light beamline on Indus-2 synchrotron radiation source  

SciTech Connect (OSTI)

This article describes the development of a soft x-ray beamline on a bending magnet source of Indus-2 storage ring (2.5 GeV) and some preliminary results of x-ray absorption spectroscopy (XAS) measurements using the same. The beamline layout is based on a spherical grating monochromator. The beamline is able to accept synchrotron radiation from the bending magnet port BL-1 of the Indus-2 ring with a wide solid angle. The large horizontal and vertical angular acceptance contributes to high photon flux and selective polarization respectively. The complete beamline is tested for ultrahigh vacuum (UHV) ? 10{sup ?10} mbar. First absorption spectrum was obtained on HOPG graphite foil. Our performance test indicates that modest resolving power has been achieved with adequate photon flux to carry out various absorption experiments.

Phase, D. M., E-mail: mgupta@csr.res.in; Gupta, Mukul, E-mail: mgupta@csr.res.in; Potdar, S., E-mail: mgupta@csr.res.in; Behera, L., E-mail: mgupta@csr.res.in; Sah, R., E-mail: mgupta@csr.res.in; Gupta, Ajay, E-mail: mgupta@csr.res.in [UGC-DAE Consortium for Scientific Research, University Campus, Khandwa Road, Indore, 452001 (India)

2014-04-24T23:59:59.000Z

274

Comparative Study of Vibration Stability at Operating Light Source Facilities and Lessons Learned in Achieving NSLS II Stability Goals  

SciTech Connect (OSTI)

In an effort to ensure that the stability goals of the NSLS II will be met once the accelerator structure is set on the selected BNL site a comprehensive evaluation of the ground vibration observed at existing light source facilities has been undertaken. The study has relied on measurement data collected and reported by the operating facilities as well as on new data collected in the course of this study. The primary goal of this comprehensive effort is to compare the green-field conditions that exist in the various sites both in terms of amplitude as well as frequency content and quantify the effect of the interaction of these accelerator facilities with the green-field vibration. The latter represents the ultimate goal of this effort where the anticipated motion of the NSLS II ring is estimated prior to its construction and compared with the required stability criteria.

Simos,N.; Fallier, M.; Amick, H.

2008-06-23T23:59:59.000Z

275

Measurements and modeling of coherent synchrotron radiation and its impact on the Linac Coherent Light Source electron beam  

Science Journals Connector (OSTI)

In order to reach the high peak current required for an x-ray free electron laser, two separate magnetic dipole chicanes are used in the Linac Coherent Light Source accelerator to compress the electron bunch length in stages. In these bunch compressors, coherent synchrotron radiation (CSR) can be emitted either by a short electron bunch or by any longitudinal density modulation that may be on the bunch. In this paper, we report detailed measurements of the CSR-induced energy loss and transverse emittance growth in these compressors. Good agreement is found between the experimental results and multiparticle tracking studies. We also describe direct observations of CSR at optical wavelengths and compare with analytical models based on beam microbunching.

K. L. F. Bane; F.-J. Decker; Y. Ding; D. Dowell; P. Emma; J. Frisch; Z. Huang; R. Iverson; C. Limborg-Deprey; H. Loos; H.-D. Nuhn; D. Ratner; G. Stupakov; J. Turner; J. Welch; J. Wu

2009-03-17T23:59:59.000Z

276

National Synchrotron Light Source user`s manual: Guide to the VUV and x-ray beamlines. Fifth edition  

SciTech Connect (OSTI)

The success of the National Synchrotron Light Source is based, in large part, on the size of the user community and the diversity of the scientific and technical disciplines represented by these users. As evidence of this success, the VUV Ring has just celebrated its 10th anniversary and the X-ray Ring will do the same in 1995. In order to enhance this success, the NSLS User`s Manual: Guide to the VUV and X-Ray Beamlines - Fifth Edition, is being published. This Manual presents to the scientific community-at-large the current and projected architecture, capabilities and research programs of the various VUV and X-ray beamlines. Also detailed is the research and computer equipment a General User can expect to find and use at each beamline when working at the NSLS. The Manual is updated periodically in order to keep pace with the constant changes on these beamlines.

Gmuer, N.F. [ed.

1993-04-01T23:59:59.000Z

277

Analysis of stray radiation produced by the advanced light source (1.9 GeV synchrotron radiation source) at Lawrence Berkeley Laboratory  

SciTech Connect (OSTI)

The yearly environmental dose equivalent likely to result at the closest site boundary from the Advanced Light Source was determined by generating multiple linear regressions. The independent variables comprised quantified accelerator operating parameters and measurements from synchronized, in-close (outside shielding prior to significant atmospheric scattering), state-of-the-art neutron remmeters and photon G-M tubes. Neutron regression models were more successful than photon models due to lower relative background radiation and redundant detectors at the site boundary. As expected, Storage Ring Beam Fill and Beam Crashes produced radiation at a higher rate than gradual Beam Decay; however, only the latter did not include zero in its 95% confidence interval. By summing for all three accelerator operating modes, a combined yearly DE of 4.3 mRem/yr with a 90% CI of (0.04-8.63) was obtained. These results fall below the DOE reporting level of 10 mRem/yr and suggest repeating the study with improved experimental conditions.

Ajemian, R.C. [Univ. of North Carolina, Chapel Hill, NC (United States). Dept. of Environmental Sciences and Engineering

1995-12-31T23:59:59.000Z

278

National Synchrotron Light Source  

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

50 50 Hazards of Elastic Tie-Downs (Bungee Cords) Date: April 3, 2012 Editor: Lori Stiegler Elastic (bungee) cords are common, inexpensive tools used for a variety of fastening applications. They can be safe if their use is planned and evaluated. However, a recent injury points out the hazard potential of these common tools. Bungee cords are made of an elastic material with metal J or S shaped hooks on each end. They are convenient to use since the hooks are versatile connectors that can be easily applied using one hand. Bungee cords can also contain stored energy which can be suddenly and forcefully released if not handled carefully. The heavy elastic cords contain tremendous force when they recoil, particularly when stretched beyond the appropriate limits. This can result

279

National Synchrotron Light Source  

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

Document Index Document Index A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z A Assessment Tracking System (ATS) Institutional ATS NSLS Family ATS NSLS Family ATS Instructions B Beamline Safety Review Beamline Safety Checklist C Calibration Calibration procedure NSLS Controlled Measuring Test Equipment Calibration List Caution Tags Coaxial cables & connectors Conduct of Operations Manual Cryogenic safety Cryogenic Liquids: Storage, Usage and Handling D Design (see engineering design) Document Control drawings (also refer to Engineer Design) procedures, & policies Approving, Distributing; List of NSLS Active Controlled Documents Periodic Review; Preparing; Reviewing; specification (distribution) specification (preparation) Document list - Active Controlled Documents

280

National Synchrotron Light Source  

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

Photon Sciences Directorate EMS/OHSAS Documents and Links Photon Sciences Directorate EMS/OHSAS Documents and Links The Photon Sciences Directorate follows the BNL requirements in the SBMS Program and Subject Areas for EMS and OHSAS. The links below contain information that is specific to the Directorate in these areas. The Photon Sciences Directorate follows the BNL Environmental, Safety, Security and Health (ESSH) Policy. Planning Photon Sciences Significant Environmental Aspects Matrix Photon Sciences QA Procedures Policies and Requirements Manual EMS, FUA and SAD/ASE Checklist for Directorate Reviews Job Risk Assessments Facility Risk Assessments ESH Improvement Plans Implementation and Operation Each employee has an associated Roles, Responsibilities, Accountability and Authority (R2A2) listing for their position. Control of Documents is

Note: This page contains sample records for the topic "light source lcls" 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

National Synchrotron Light Source  

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

7 7 Inspections of Step Stools, Ladder Stands, and Portable Ladders Date: May 21, 2009 Editors: L. Stiegler There are times when we all need to reach something that is not accessible from the ground level. It could be something just out of reach, so we use a step stool. Or, it could be higher. In those cases we would need to use a ladder stand (a self-supported, portable set of steps), or portable ladder. Any of these devices require inspection prior to each use. The guidelines below will help you with this inspection. General Guidance for all devices: Surfaces must be free from oil, grease and slippery substances All exposed surfaces must be free from sharp edges, burrs, or other safety hazards Stepping surface, including rungs, must be skid resistant All feet or bottom surfaces must be skid resistant (i.e. rubber feet

282

National Synchrotron Light Source  

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

Directions to Training Office Directions to Training Office The Photon Sciences Training Manager is located in the NSLS facility, Building 725D, Room 2-160. Directions (from the Main Entrance) From the Main (front) entrance, take the stairs or elevator to the second floor. Turn right into the hallway and proceed past the lobby balcony. Continue past the seminar room on the right and through the hallway to make a 90 degree left turn. Continue through this next hallway past the Design Room on the left. Turn left at the overhead sign for "Training" and continue straight through to Room 2-160 on your left. Directions (from the North Entrance) From the North (back) entrance, take the stairs or elevator to the second floor. Turn left into the hallway. Turn right at the doorway marked Room

283

National Synchrotron Light Source  

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

Job Risk Assessments (JRAs) Job Risk Assessments (JRAs) JRA Blank Form Word Completed JRAs Accelerator Operations PS-JRA-0030 Accelerator or Beam Line Commissioning and Fault Studies PS-JRA-0028 Accelerator or Beam Line Components, Mechanical Assembly PS-JRA-0006 Using a Beamline PS-JRA-0029 Cable Pulling PS-JRA-0042 Chemical Use (Routine Chemicals) PS-JRA-0021 Chemical Work (Hazardous Chemicals) PS-JRA-0020 Chemicals and Radioactive Materials Transport PS-JRA-0022 Compressed Gas Cylinders and Systems Work PS-JRA-0009 Cooling Water Systems Work PS-JRA-0012 Cryogenic Work (General Cryogens) LS-JRA-0010 Driving Electrical and Electronic Shop Work PS-JRA-0001 Electrical Equipment (Zero Energy State) Work PS-JRA-0002 Electrical Equipment, Energized (Troubleshooting in Range >=50V and <=240V) PS-JRA-0003

284

National Synchrotron Light Source  

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

49 49 Hand Safety Date: January 7, 2011 Editor: Lori Stiegler It's not unusual for experiment needs to change, and beam time to be limited while conducting research at the NSLS. Unfortunately, these factors, and several other contributing factors, converged recently and adversely affected an experimenter. The result was a hand injury that required a trip to the hospital, and sutures. In the case of this injury, the user was trying to fashion a new sample holder because of difficulty with the equipment he had brought from his home institution. The idea for the substitute sample holder had been previously discussed with his work group, but never tried. Using the alternate tools and holders he had brought, he tried to cut a slot out of a hard plastic tube with a razor

285

National Synchrotron Light Source  

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

Authorization Documents Authorization Documents Environmental Assessment for NSLS, ATF & SDL NSLS Safety Assessment Document Accelerator Safety Envelope Fire Hazard Analysis Conduct of Operations NSLS-II Environmental Assessment (2006) Finding of No Significant Impact (2006) Comparison of NSLS-II Environmental Assessment with NSLS-II Title II Design Specifications (2008) "NEXT" Beamlines Environmental Evaluation Notification Form and Approval Memo (2011) Linac Commissioning Safety Assessment Document (2011) NSLS-II USI Determination #1 NSLS-II USI Determination #2 NSLS-II USI Determination #3 NSLS-II USI Determination #4 NSLS-II USI Determination #5 Linac Commissioning Accelerator Safety Envelope (2011) Linac Commissioning Plan (2011) Booster Commissioning Safety Assessment Document (2011)

286

National Synchrotron Light Source  

SciTech Connect (OSTI)

A general description is given of the NSLS. Topics covered include: storage ring characteristics; experimental facilities; experimental research; general user proposals; expansion of the NSLS; and transportation to the facility. (GHT)

Klaffky, R.W.

1984-01-01T23:59:59.000Z

287

Light-Source Facilities  

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

Facility, P.R. China CANDLE, Armenia HSRC - Hiroshima Synchrotron Radiation Center, Japan iFEL - Institute of Free Electron Laser, Japan INDUS 1 INDUS 2, India IR FEL...

288

Interference-induced enhancement of intensity and energy of a multimode quantum optical field by a subwavelength array of coherent light sources  

E-Print Network [OSTI]

Recently, we have showed a mechanism that could provide a great transmission enhancement of the light waves passed through subwavelength aperture arrays in thin metal films not by the plasmon-polariton waves, but by the constructive interference of diffracted waves (beams generated by the apertures) at the detector placed in the far-field zone. We now present a quantum reformulation of the model. The Hamiltonian describing the interference-induced enhancement of the intensity and energy of a multimode quantum optical field is derived. Such a field can be produced, for instance, by a subwavelength array of coherent light sources.

S. V. Kukhlevsky

2008-06-13T23:59:59.000Z

289

Lighting Systems  

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

Purple LED lamp Purple LED lamp Lighting Systems Lighting research is aimed at improving the energy efficiency of lighting systems in buildings and homes across the nation. The goal is to reduce lighting energy consumption by 50% over twenty years by improving the efficiency of light sources, and controlling and delivering illumination so that it is available, where and when needed, and at the required intensity. Research falls into four main areas: Sources and Ballasts, Light Distribution Systems, Controls and Communications, and Human Factors. Contacts Francis Rubinstein FMRubinstein@lbl.gov (510) 486-4096 Links Lighting Research Group Batteries and Fuel Cells Buildings Energy Efficiency Applications Commercial Buildings Cool Roofs and Heat Islands Demand Response Energy Efficiency Program and Market Trends

290

Specific light in sculpture  

E-Print Network [OSTI]

Specific light is defined as light from artificial or altered natural sources. The use and manipulation of light in three dimensional sculptural work is discussed in an historic and contemporary context. The author's work ...

Powell, John William

1989-01-01T23:59:59.000Z

291

ECE 466: LED Lighting Systems -Incandescent lightings rise and  

E-Print Network [OSTI]

versus cost - Power Electronic Drives for CFL and LED light sources to achieve dimmable operation - Basic electric AC and DC circuits at Sophomore level or equivalents Absolutes Lighting System Requirements index as a metric of a light source - Power Electronic Energy sources driving light sources in a compact

Schumacher, Russ

292

Increased Saturated Levels of Stimulated Brillouin Scattering of a Laser by Seeding a Plasma with an External Light Source  

SciTech Connect (OSTI)

The reflectivity of laser light due to stimulated Brillouin scattering (SBS) from long-scale plasmas normally saturates when the laser intensity is increased sufficiently. Nevertheless a significant increase in the SBS reflectivity back into the beam cone results from a subtle change in the target geometry, done for the purpose of seeding SBS. The key element is apparently the injection into the plasma of a modest external electromagnetic seed at a wavelength near that of the scattered light. {copyright} {ital 1998} {ital The American Physical Society}

Fernandez, J.C.; Bauer, B.S.; Bradley, K.S.; Cobble, J.A.; Montgomery, D.S.; Watt, R.G.; Bezzerides, B.; Focia, R.; Goldman, S.R.; Harris, D.B.; Lindman, E.L.; Rose, H.A.; Wallace, J.; Wilde, B.H. [Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)] [Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States); Estabrook, K.G. [Lawrence Livermore National Laboratory, Livermore, California 94551 (United States)] [Lawrence Livermore National Laboratory, Livermore, California 94551 (United States)

1998-09-01T23:59:59.000Z

293

NewsListings  

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

NewsListings NewsListings Sign In Launch the Developer Dashboard SLAC National Accelerator Laboratory DOE | Stanford | SLAC | SSRL | LCLS | AD | PPA | Photon Science | PULSE | SIMES LCLS : Linac Coherent Light Source An Office of 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 LCLS News User Resources Expand User Resources Instruments Expand Instruments Proposals Publications Expand Publications Schedules Machine Status Machine FAQs Safety Organization Expand Organization Directories Expand Directories Staff Resources Contact Us All Site Content Department of Energy Page Content News X-ray Laser Maps Important Drug Target Thursday, December 19, 2013 LCLS News Researchers have used one of the brightest X-ray sources on the planet to map the 3-D structure of an important cellular gatekeeper known as a G protein-coupled receptor, or GPCR, in a more natural state than possible before. The new technique is a major advance in exploring GPCRs, a vast, hard-to-study family of proteins that plays a key role in human health and is targeted by an estimated 40 percent of modern medicines.

294

The U.S. Department of Energy's Brookhaven National Laboratory P.O. Box 5000, Upton NY 11973 631 344-2345 www.bnl.gov National Synchrotron Light Source II  

E-Print Network [OSTI]

The U.S. Department of Energy's Brookhaven National Laboratory · P.O. Box 5000, Upton NY 11973 · 631 344-2345 · www.bnl.gov FACTS (04-14) National Synchrotron Light Source II NSLS-II by the Numbers World's Premier SynchrotronWill Light theWay to New Discoveries Like all synchrotrons, the National

Ohta, Shigemi

295

The LCLS Design Group  

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

nor is intended to imply approval, disapproval, or fitness for any particular use. A royalty-free, nonexclusive right to use and disseminate same for any purpose whatsoever, is...

296

CY15 Proposals  

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

be given to JLF proposals that link to experiments, or proposed experiments, at the x-ray free electron laser facility Linear Coherent Light Source (LCLS) located at the SLAC...

297

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

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

DOE proposes to construct and operate a new research facility at SLAC, the Linac Coherent Light Source (LCLS), as a collaborative effort with other DOE facilities. U.S. Department...

298

Techniques and use of a tunable, laser-based, MeV-Class Compton scattering light source  

SciTech Connect (OSTI)

A Compton scattering {gamma}-ray source, capable of producing photons with energies ranging from 0.1 MeV to 0.9 MeV has been commissioned and characterized, and then used to perform nuclear resonance fluorescence (NRF) experiments. The key source parameters are the size (0.01 mm{sup 2}), horizontal and vertical divergence (6 x 10 mrad{sup 2}), duration (10 ps), spectrum and intensity (10{sup 5} photons/shot). These parameters are summarized by the peak brightness, 1.5 x 10{sup 15} photons/mm{sup 2}/mrad{sup 2}/s/0.1%bandwidth, measured at 478 keV. Additional measurements of the flux as a function of the timing difference between the drive laser pulse and the relativistic photoelectron bunch, {gamma}-ray beam profile, and background evaluations are presented. These results are systematically compared to theoretical models and computer simulations. NRF measurements performed on {sup 7}Li in LiH demonstrate the potential of Compton scattering photon sources to accurately detect isotopes in situ.

Albert, F; Anderson, S G; Gibson, D J; Hagmann, C A; Johnson, M S; Messerly, M; Semenov, V; Shverdin, M Y; Rusnak, B; Tremaine, A M; Hartemann, F V; Siders, C W; McNabb, D P; Barty, C P

2009-06-30T23:59:59.000Z

299

Evaluation of the phase randomness of the light source in quantum key distribution systems with an attenuated laser  

E-Print Network [OSTI]

The phase randomized light is one of the key assumptions in the security proof of Bennett-Brassard 1984 (BB84) quantum key distribution (QKD) protocol implemented with an attenuated laser. Though the assumption has been believed to be satisfied for conventional systems, it should be reexamined for current high speed QKD systems. The phase correlation may be induced by the overlap of the optical pulses, the interval of which decreases as the clock frequency. The phase randomness was investigated experimentally by measuring the visibility of interference. An asymmetric Mach-Zehnder interferometer was used to observe the interference between adjacent pulses from a gain-switched distributed feedback laser diode driven at 10 GHz. Low visibility was observed when the minimum drive current was set far below the threshold, while the interference emerged when the minimum drive current was close to the threshold. Theoretical evaluation on the impact of the imperfect phase randomization provides target values for the visibility to guarantee the phase randomness. The experimental and theoretical results show that secure implementation of decoy BB84 protocol is achievable even for the 10-GHz clock frequency, by using the laser diode under proper operating conditions.

Toshiya Kobayashi; Akihisa Tomita; Atsushi Okamoto

2014-07-07T23:59:59.000Z

300

Lighting Group: Overview  

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

Overview Overview Overview of the Lighting Research Group The Lighting Research Group at Lawrence Berkeley National Laboratory performs research aimed at improving the energy efficiency of lighting systems in buildings and homes, throughout the State of California and across the Nation. The goal is to reduce lighting energy consumption by 50% over twenty years by improving the efficiency of light sources, and controlling and delivering illumination so that it is available, where and when needed, and at the required intensity. Research in the Lighting Group falls into three main areas: Sources and Ballasts, Light Distribution Systems and Controls and Communications. Click on a link below for more information about each of these research areas. Sources and Ballasts investigates next generation light sources, such as

Note: This page contains sample records for the topic "light source lcls" 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

Development of Novel RTP-like Processing for Solar Cell Fabrication using UV-Rich Light Sources: Cooperative Research and Development Final Report, CRADA No. CRD-11-442  

SciTech Connect (OSTI)

NREL and Mattson Technology are interested in developing new processing techniques for fabrication of solar cells using UV-rich optical processing. UV light has a very high absorption coefficient in most semiconductors, allowing the semiconductor surface to be heated locally and, in some cases, without a significant increase in the substrate temperature. NREL has several projects related to cell processing that currently use an optical furnace (having a spectrum rich in visible and infrared light). Mattson Technology has developed a UV rich light source that can be used in either pulse or continuous modes. The objective of this CRADA is to explore applications in solar cell processing where absorption characteristics of UV light can lead to lower cell cost and/or higher efficiencies.

Sopori, B.

2013-01-01T23:59:59.000Z

302

Sleep, mood, and circadian responses to bright green light during sleep  

E-Print Network [OSTI]

white light from fluorescent bulbs, as point sources mightthan incandescent bulbs. Also, fluorescent light is easier

Grandner, Michael Andrew

2007-01-01T23:59:59.000Z

303

Lakeview Light and Power - Commercial Lighting Rebate Program | Department  

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

Lakeview Light and Power - Commercial Lighting Rebate Program Lakeview Light and Power - Commercial Lighting Rebate Program Lakeview Light and Power - Commercial Lighting Rebate Program < Back Eligibility Commercial Fed. Government Local Government Nonprofit State Government Savings Category Appliances & Electronics Commercial Lighting Lighting Program Info Funding Source Funded by Bonneville Power Administration Expiration Date 9/1/2013 State District of Columbia Program Type Utility Rebate Program Rebate Amount Commercial Lighting Installation: Up to 70% of cost Provider Lakeview Light and Power Lakeview Light and Power offers a commercial lighting rebate program. Rebates apply to the installation of energy efficient lighting retrofits in non-residential buildings. The rebate program is funded by BPA and ends in September of 2010 or earlier if the funding is exhausted. Lakeview Light

304

Energy Implications of Solid-State Lighting Technology  

Science Journals Connector (OSTI)

The efficient yet highly controllable generation of light can be accomplished by light-emitting diodes that can have a 20 times greater efficiency than incandescent light sources....

Schubert, E Fred; Kim, Jong Kyu

305

Microsoft Word - Document1  

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

LASING OF THE LCLS X-RAY FEL AT 1.5 Ă… LASING OF THE LCLS X-RAY FEL AT 1.5 Ă… P. Emma, for the LCLS Commissioning Team; SLAC, Stanford, CA 94309, USA Abstract The Linac Coherent Light Source (LCLS) is a SASE 1.5-15 Ă… x-ray Free-Electron Laser (FEL) facility under construction at SLAC [1], and presently in an advanced phase of commissioning. The injector, linac, and new bunch compressors were commissioned in 2007 [2] and 2008 [3], establishing the necessary electron beam brightness at 14 GeV. The final phase of commissioning, including the FEL undulator and the long transport line from the linac, began in November 2008, with first 1.5-Ă… FEL light and saturation observed in mid-April 2009. We report on the accelerator, undulator, and FEL operations, although prior to the availability of the full x-ray

306

SLAC All Access: Atomic, Molecular and Optical Science Instrument  

ScienceCinema (OSTI)

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

Bozek, John

2014-06-03T23:59:59.000Z

307

Non-contact pumping of light emitters via non-radiative energy transfer  

DOE Patents [OSTI]

A light emitting device is disclosed including a primary light source having a defined emission photon energy output, and, a light emitting material situated near to said primary light source, said light emitting material having an absorption onset equal to or less in photon energy than the emission photon energy output of the primary light source whereby non-radiative energy transfer from said primary light source to said light emitting material can occur yielding light emission from said light emitting material.

Klimov, Victor I. (Los Alamos, NM); Achermann, Marc (Los Alamos, NM)

2010-01-05T23:59:59.000Z

308

Procedure for simulating divergent-light halos  

Science Journals Connector (OSTI)

Divergent-light halos are halos produced by light from nearby light sources, like street lamps being scattered by small crystals of ice floating in the air. The use of “brute-force”...

Gislén, Lars

2003-01-01T23:59:59.000Z

309

Lighting fundamentals handbook: Lighting fundamentals and principles for utility personnel  

SciTech Connect (OSTI)

Lighting accounts for approximately 30% of overall electricity use and demand in commercial buildings. This handbook for utility personnel provides a source of basic information on lighting principles, lighting equipment, and other considerations related to lighting design. The handbook is divided into three parts. Part One, Physics of Light, has chapters on light, vision, optics, and photometry. Part Two, Lighting Equipment and Technology, focuses on lamps, luminaires, and lighting controls. Part Three, Lighting Design Decisions, deals with the manner in which lighting design decisions are made and reviews relevant methods and issues. These include the quantity and quality of light needed for visual tasks, calculation methods for verifying that lighting needs are satisfied, lighting economics and methods for evaluating investments in efficient lighting systems, and miscellaneous design issues including energy codes, power quality, photobiology, and disposal of lighting equipment. The handbook contains a discussion of the role of the utility in promoting the use of energy-efficient lighting. The handbook also includes a lighting glossary and a list of references for additional information. This convenient and comprehensive handbook is designed to enable utility lighting personnel to assist their customers in developing high-quality, energy-efficient lighting systems. The handbook is not intended to be an up-to-date reference on lighting products and equipment.

Eley, C.; Tolen, T. (Eley (Charles) Associates, San Francisco, CA (United States)); Benya, J.R. (Luminae Souter Lighting Design, San Francisco, CA (United States))

1992-12-01T23:59:59.000Z

310

Illuminating system and method for specialized and decorative lighting using liquid light guides  

DOE Patents [OSTI]

The present invention comprises an illumination system for specialized decorative lighting including a light source, a flexible plastic tube sheath for distributing the light to a remote location, a transparent liquid core filling the tube that has an index of refraction greater than that of the plastic tube and an arrangement where light coupled from the light source is caused to leak from the liquid light guide at desired locations for the purposes of specialized lighting, such as underwater illumination in swimming pools.

Zorn, Carl J. (Yorktown, VA); Kross, Brian J. (Yorktown, VA); Majewski, Stanislaw (Grafton, VA); Wojcik, Randolph F. (Yorktown, VA)

1998-01-01T23:59:59.000Z

311

Green Light Pulse Oximeter  

DOE Patents [OSTI]

A reflectance pulse oximeter that determines oxygen saturation of hemoglobin using two sources of electromagnetic radiation in the green optical region, which provides the maximum reflectance pulsation spectrum. The use of green light allows placement of an oximetry probe at central body sites (e.g., wrist, thigh, abdomen, forehead, scalp, and back). Preferably, the two green light sources alternately emit light at 560 nm and 577 nm, respectively, which gives the biggest difference in hemoglobin extinction coefficients between deoxyhemoglobin, RHb, and oxyhemoglobin, HbO.sub.2.

Scharf, John Edward (Oldsmar, FL)

1998-11-03T23:59:59.000Z

312

White light velocity interferometer  

DOE Patents [OSTI]

The invention is a technique that allows the use of broadband and incoherent illumination. Although denoted white light velocimetry, this principle can be applied to any wave phenomenon. For the first time, powerful, compact or inexpensive sources can be used for remote target velocimetry. These include flash and arc lamps, light from detonations, pulsed lasers, chirped frequency lasers, and lasers operating simultaneously in several wavelengths. The technique is demonstrated with white light from an incandescent source to measure a target moving at 16 m/s.

Erskine, David J. (Oakland, CA)

1997-01-01T23:59:59.000Z

313

White light velocity interferometer  

DOE Patents [OSTI]

The invention is a technique that allows the use of broadband and incoherent illumination. Although denoted white light velocimetry, this principle can be applied to any wave phenomenon. For the first time, powerful, compact or inexpensive sources can be used for remote target velocimetry. These include flash and arc lamps, light from detonations, pulsed lasers, chirped frequency lasers, and lasers operating simultaneously in several wavelengths. The technique is demonstrated with white light from an incandescent source to measure a target moving at 16 m/s. 41 figs.

Erskine, D.J.

1997-06-24T23:59:59.000Z

314

White light velocity interferometer  

DOE Patents [OSTI]

The invention is a technique that allows the use of broadband and incoherent illumination. Although denoted white light velocimetry, this principle can be applied to any wave phenomenon. For the first time, powerful, compact or inexpensive sources can be used for remote target velocimetry. These include flash and arc lamps, light from detonations, pulsed lasers, chirped frequency lasers, and lasers operating simultaneously in several wavelengths. The technique is demonstrated with white light from an incandescent source to measure a target moving at 16 m/s.

Erskine, David J. (Oakland, CA)

1999-01-01T23:59:59.000Z

315

White light velocity interferometer  

DOE Patents [OSTI]

The invention is a technique that allows the use of broadband and incoherent illumination. Although denoted white light velocimetry, this principle can be applied to any wave phenomenon. For the first time, powerful, compact or inexpensive sources can be used for remote target velocimetry. These include flash and arc lamps, light from detonations, pulsed lasers, chirped frequency lasers, and lasers operating simultaneously in several wavelengths. The technique is demonstrated with white light from an incandescent source to measure a target moving at 16 m/s. 41 figs.

Erskine, D.J.

1999-06-08T23:59:59.000Z

316

Commercial Lighting | Department of Energy  

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

Lighting Lighting Commercial Lighting At an estimated cost of $38 billion a year, lighting represents the largest source of electricity consumption in U.S. commercial buildings. By combining an inexpensive camera with a high-speed microprocessor and algorithms, researchers at the National Renewable Energy Lab developed an occupancy sensor can recognize the presence of human occupants more than 90 percent of the time -- an advancement that could lead to enormous energy savings in commercial buildings. At an estimated cost of $38 billion a year, lighting represents the largest source of electricity consumption in U.S. commercial buildings. By combining an inexpensive camera with a high-speed microprocessor and

317

Lighting Research Group: Facilities  

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

Facilities Facilities Lighting Research Facilities at LBNL gonio-photometer Gonio-photometer We use this device to measure the intensity and direction of the light from a lamp or fixture. integrating sphere Integrating sphere This instrument allows us to get a fast and accurate measurement of the total light output of a lamp. We are not able to determine the direction of the light, only the intensity. power analyzer Power analyzer We use our power analyzer with the lamps in the gonio-photometer to measure input power, harmonic distortion, power factor, and many other signals that tell us how well a lamp is performing. spectro-radiometer Spectro-radiometer This device measures not only the intensity of a light source but also the intensity of the light at each wavelength.

318

Metrology Sources for EUV Lithography  

Science Journals Connector (OSTI)

Mask inspection and validation are key elements of the EUV lithography infrastructure. Requirements for the light sources to enable these tools will be ...

Home, Steve; Blackborow, Paul; Bensen, Matthew M; Partlow, Matthew J; Gustafson, Deborah; Goldstein, Michael

319

Secretary Chu Dedicates World's Most Powerful X-ray Laser | Department of  

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

Dedicates World's Most Powerful X-ray Laser Dedicates World's Most Powerful X-ray Laser Secretary Chu Dedicates World's Most Powerful X-ray Laser August 16, 2010 - 12:00am Addthis Washington, D.C. - U.S. Energy Secretary Steven Chu today dedicated the Linac Coherent Light Source (LCLS), the world's first and most powerful X-ray laser, at the Department of Energy's SLAC National Accelerator Laboratory. The LCLS will play an essential role in addressing the scientific needs of the 21st century by exploring new ways to create better energy sources and enabling advances in a range of scientific fields. The LCLS produces pulses of X-rays more than a billion times brighter than the most powerful existing sources. The ultrafast X-ray pulses are used much like flashes from a high-speed strobe light, enabling scientists to take

320

Total Light Management  

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

Light Management Light Management Why is saving Energy Important World Electricity Consumption (2007) Top 20 Countries 0 500 1000 1500 2000 2500 3000 3500 4000 4500 U n i t e d S t a t e s C h i n a J a p a n R u s s i a I n d i a G e r m a n y C a n a d a A f r i c a F r a n c e B r a z i l K o r e a , S o u t h U n i t e d K i n g d o m I t a l y S p a i n A u s t r a l i a T a i w a n S o u t h A f r i c a M e x i c o S a u d i A r a b i a I r a n Billion kWh Source: US DOE Energy Information Administration Lighting Control Strategies 4 5 6 Occupancy/Vacancy Sensing * The greatest energy savings achieved with any lighting fixture is when the lights are shut off * Minimize wasted light by providing occupancy sensing or vacancy sensing 7 8 Daylight Harvesting * Most commercial space has enough natural light flowing into it, and the amount of artificial light being generated can be unnecessary * Cut back on the production of artificial lighting by

Note: This page contains sample records for the topic "light source lcls" 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

Compression of powerful x-ray pulses to attosecond durations by stimulated Raman backscattering in plasmas  

E-Print Network [OSTI]

the possibility of using powerful x-ray sources for producing ultrahigh laser intensities. It might clarify how much the emerging mJ x-ray laser technologies 1 could compete with the emerging MJ optical laser the biggest of currently built lasers: Linac Coherent Light Source LCLS 1 in x-ray range and megajoule laser

322

Solid State Lighting Semiconductor Spectroscopy & Devices  

E-Print Network [OSTI]

than a light bulb, but they contain traces of toxic materials. LEDs utilise the movement of electrons information: jochen.bruckbauer@strath.ac.uk Overview Conventional light sources, like the light bulb and fluorescent lamps, are very inefficient in transforming energy into light. Due to upcoming problems in energy

Strathclyde, University of

323

Demand Responsive Lighting: A Scoping Study  

E-Print Network [OSTI]

9: Lighting Energy Usage for Commercial Building Lighting incommercial buildings. 4.2. Energy The California Energy Commission has analyzed lighting energy usageCommercial Sector on 2003 Peak Day [Source: CEC 2003 Data] Figure 9: Lighting Energy Usage for Commercial Building

Rubinstein, Francis; Kiliccote, Sila

2007-01-01T23:59:59.000Z

324

A Proposal to the Department of Energy for The Fabrication of a Very High Energy Polarized Gama Ray Beam Facility and A Program of Medium Energy Physics Research at The National Synchrotron Light Source  

SciTech Connect (OSTI)

This proposal requests support for the fabrication and operation of a modest facility that would provide relatively intense beams of monochromatic and polarized photons with energies in the range of several hundreds of MeV. These {gamma} rays would be produced by Compton backscattering laser light from the electrons circulating in the 2.5-3.0 GeV 'X-RAY' storage ring of the National Synchrotron Light Source (NSLS) at Brookhaven National Laboratory. The excellent emittance, phase space, and high current of this state-of-the-art storage ring will allow the production of 2 x 10{sup 7} {gamma} rays per second. These photons would be tagged by detecting the scattered electrons, thereby determining the energy to 2.7 MeV for all {gamma}-ray energies. The efficiency of this tagging procedure is 100% and the {gamma}-ray beam would be essentially background free. Tagging will also allow the flexibility of operating with a dynamic range as large as 200 MeV in photon energy while still preserving high resolution and polarization. These beams will permit a fruitful study of important questions in medium-energy nuclear physics. The initial goals of this program are to reach reliable operation with photon energies up to 300 MeV and to develop {gamma}-ray beams with energies up to about 500 MeV. To demonstrate reliable operation, a modest physics program is planned that, for the most part, utilizes existing magnets and detector systems but nonetheless addresses several important outstanding problems. Gamma ray beams of the versatility, intensity, energy, and resolution that can be achieved at this facility are not currently available at any other world facility either existing or under construction. Furthermore, the proposed program would produce the first intense source of medium-energy {gamma} rays that are polarized. Because of the difficulties in producing such polarized beams, it is very unlikely that viable alternate sources can be developed in the near future; at present, no others are planned.

Sandorfi, A.M.; LeVine, M.J.; Thorn, C.E.; Giordano, G.; Matone, G.

1982-09-01T23:59:59.000Z

325

2-D Modeling of Energy-z Beam Dynamics Using the LiTrack Matlab Program  

SciTech Connect (OSTI)

Short bunches and the bunch length distribution have important consequences for both the LCLS project at SLAC and the proposed ILC project. For both these projects, it is important to simulate what bunch length distributions are expected and then to perform actual measurements. The goal of the research is to determine the sensitivity of the bunch length distribution to accelerator phase and voltage. This then indicates the level of control and stability that is needed. In this project I simulated beamlines to find the rms bunch length in three different beam lines at SLAC, which are the test beam to End Station A (ILC-ESA) for the ILC studies, Linac Coherent Light Source (LCLS) and LCLS-ESA. To simulate the beamlines, I used the LiTrack program, which does a 2-dimensional tracking of an electron bunch's longitudinal (z) and the energy spread beam (E) parameters. In order to reduce the time of processing the information, I developed a small program to loop over adjustable machine parameters. LiTrack is a Matlab script and Matlab is also used for plotting and saving and loading files. The results show that the LCLS in Linac-A is the most sensitive when looking at the ratio of change in phase degree to rate of change. The results also show a noticeable difference between the LCLS and LCLS-ESA, which suggest that further testing should go into looking the Beam Switch Yard and End Station A to determine why the result of the LCLS and LCLS-ESA vary.

Cauley, S.K.; /Unlisted; Woods, M.; /SLAC

2005-12-15T23:59:59.000Z

326

Light Portal  

Science Journals Connector (OSTI)

The Light Portal was designed to organize and mark the pedestrian paths that circumnavigate the rectangle of the...

2006-01-01T23:59:59.000Z

327

Easy and inexpensive demonstration of light interference  

Science Journals Connector (OSTI)

Interference of scattered light is easy and inexpensive to observe using a flashlight mirror and talcum powder. Using this phenomenon the thickness of plastic wrap was measured using a light emitting diode point source.

Charles A. Sawicki

2001-01-01T23:59:59.000Z

328

Light's twist  

Science Journals Connector (OSTI)

...equal to the optical power divided by the speed of light, and hence go unnoticed in our everyday lives...approaching object equal to the power in the light beam (P) divided by the speed of light. The movement of the approaching object does...

2014-01-01T23:59:59.000Z

329

Light Properties Light travels at the speed of light `c'  

E-Print Network [OSTI]

LIGHT!! #12;Light Properties Light travels at the speed of light `c' C = 3 x 108 m/s Or 190.nasa.gov #12;The speed of light The speed of light `c' is equal to the frequency ` times the wavelength,000 miles/second!! Light could travel around the world about 8 times in one second #12;What is light?? Light

Mojzsis, Stephen J.

330

Radioluminescent polymer lights  

SciTech Connect (OSTI)

The preparation of radioluminescent light sources where the tritium is located on the aryl-ring in a polymer has been demonstrated with deuterium/tritium substitution. This report discusses tests, results, and future applications of radioluminescent polymers. 10 refs. (FI)

Jensen, G.A.; Nelson, D.A.; Molton, P.M.

1990-09-01T23:59:59.000Z

331

Advanced Photon Source (APS) | U.S. DOE Office of Science (SC...  

Office of Science (SC) Website

Syncrotron Light Source (NSLS-II) Stanford Synchrotron Radiation Light Source (SSRL) Neutron Scattering Facilities Nanoscale Science Research Centers (NSRCs) Projects...

332

Organic Light Emitting Diode for White Light Emission  

E-Print Network [OSTI]

During the last few years, research based on energy saving technologies is being given high priority all over the world. General lighting is one area in which large quantity of electrical energy is being spend and substantial energy saving is possible by using energy saving technologies. Conventional light sources like incandescent filament lamps in which a major

M. N. Kamalasanan; Ritu Srivastava; Gayatri Chauhan; An Kumar; Amit Kumar; M. N. Kamalasanan; Ritu Srivastava; Gayatri Chauhan; An Kumar; Priyanka Tayagi; Amit Kumar

333

EK101 Engineering Light Project: Evaluate Residential Lighting  

E-Print Network [OSTI]

for residential lighting (LED, Compact Fluorescent, Incandescent). Develop a plan of experiments to be conducted, CF, and Incandescent bulbs for the past ten years. (try the wayback time machine if other sources fail). Discuss the key challenges associated with a transition from incandescent lighting

Bifano, Thomas

334

THELUMINAPROJECT http://light.lbl.gov  

E-Print Network [OSTI]

source of portable lighting in Kenya, outpacing incandescent flashlights (Johnstone et al., 2009). LED technology has the potential to provide efficiency and performance benefits relative to incandescent bulbs

Jacobson, Arne

335

Physicists change the light bulb  

Science Journals Connector (OSTI)

...came in such colors as red and green. They were used as indicator lights...which has enabled bright and energy-saving white light sources...and waste most of the input energy. “With 20% of the world's...people who are not connected to energy grids. The usefulness of this...

Dennis Normile

2014-10-10T23:59:59.000Z

336

LED Lighting Basics | Department of Energy  

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

LED Lighting Basics LED Lighting Basics LED Lighting Basics August 16, 2013 - 10:07am Addthis Light-emitting diodes (LEDs) are light sources that differ from more traditional sources of light in that they are semiconductor devices that produce light when an electrical current is applied. Applying electrical current causes electrons to flow from the positive side of a diode to the negative side. Then, at the positive/negative junction of the diode, the electrons slow down to orbit at a lower energy level. The electrons emit the excess energy as photons of light. LEDs are often used as small indicator lights on various electronic devices. Because of their long life, durability, and efficiency, LEDs are becoming more common in residential, commercial, and outdoor area lighting

337

Integrated LED-based luminare for general lighting  

DOE Patents [OSTI]

Lighting apparatus and methods employing LED light sources are described. The LED light sources are integrated with other components in the form of a luminaire or other general purpose lighting structure. Some of the lighting structures are formed as Parabolic Aluminum Reflector (PAR) luminaires, allowing them to be inserted into conventional sockets. The lighting structures display beneficial operating characteristics, such as efficient operation, high thermal dissipation, high output, and good color mixing.

Dowling, Kevin J.; Lys, Ihor A.; Roberge, Brian; Williamson, Ryan C.; Roberts, Ron; Datta, Michael; Mollnow, Tomas; Morgan, Frederick M.

2013-03-05T23:59:59.000Z

338

SLAC Linac Coherent Light Source User Site  

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

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

339

Advanced Light Source Activity Report 2000  

E-Print Network [OSTI]

Goldstein, E. Blakely, K. Bjornstad, M. Martin, and W.R.M.L. Russell, and K. Bjornstad (Berkeley Lab) and M.C.Martin, E.A. Blakely, K. Bjornstad, and W.R. McKinney, “

Greiner, A.; Moxon, L.; Robinson, A.; Tamura, L.

2001-01-01T23:59:59.000Z

340

SLAC Linac Coherent Light Source User Site  

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

not happen automatically and a re-submission will not receive preference during the review process. There is no limit to the number of proposals that can be submitted by a...

Note: This page contains sample records for the topic "light source lcls" 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

Modelling of Radiative Transfer in Light Sources  

E-Print Network [OSTI]

. . . . . . . . . . . . . . . 30 2.5.3 Temperature distribution . . . . . . . . . . . . . . . . . . . . . . . . . 32 2-X radiative transition that is responsible for the sulfur lamp's bright sun-like spectrum #12;Contents 1

Eindhoven, Technische Universiteit

342

Advanced Light Source Beam Position Monitor  

E-Print Network [OSTI]

2 Diagram of storage ring BPM button test set. The 290 ohmmodules. Fig. 6 Drawing of BPM modules and bin. The chassis7 Basic signal flow between BPM plug-in modules. Throughout

Hinkson, J.

2011-01-01T23:59:59.000Z

343

Advanced Light Source Activity Report 2005  

E-Print Network [OSTI]

chemical states, and small metal-silicide precipi- F I G U Rmetal defects in commercial solar cell material. Left: Iron silicide

Tamura Ed., Lori S.

2010-01-01T23:59:59.000Z

344

A heat-driven monochromatic light source  

SciTech Connect (OSTI)

This work investigates theoretically the efficiency with which heat may be converted into resonance radiation in a cesium thermionic diode. An analytical model of a thermionic converter is employed which combines the coupled effects of line radiation transport, excited-state kinetics, and plasma diffusion. Operating regimes are established for various degrees of optical density in the plasma. The results indicate that monochromatic radiation can be produced with efficiencies on the order of 30 percent provided there is an adequate voltage drop across the plasma. In this study, a drop of one volt was used since it can be maintained without any electrical power input to the device. It is found that high efficiencies come by virtue of the higher interelectrode distances which the solutions will accommodate, and that radiation can be generated efficiently, even with optically dense gases.

Stefani, F.; Lawless, J.L.

1989-04-01T23:59:59.000Z

345

Advanced light source. Activity report 1995  

SciTech Connect (OSTI)

The ALS Activity Report is designed to share the breadth, variety, and interest of the scientific program and ongoing R&D efforts in a form that is accessible to a broad audience. Recent research results are presented in six sections, each representing an important theme in ALS science. These results are designed to demonstrate the capabilities of the ALS, rather than to give a comprehensive review of 1995 experiments. Although the scientific program and facilities report are separate sections, in practice the achievements and accomplishments of users and ALS staff are interdependent. This user-staff collaboration is essential to help us direct our efforts toward meeting the needs of the user community, and to ensure the continued success of the ALS as a premier facility.

NONE

1996-07-01T23:59:59.000Z

346

SLAC Linac Coherent Light Source User Site  

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

in the following two documents: An Engineering Specification Document (ESD). An Interface Control Document (ICD). The end station builders must be available to commit the...

347

Brain protein deciphered at Advanced Light Source  

SciTech Connect (OSTI)

This computer-generated model of a rat glutamate receptor is the first complete portrait of this important link in the nervous system. At the top of the Y-shaped protein, a pair of molecules splay outward like diverging prongs. The bottom section, which is embedded in a neuronal membrane, houses the ion channel. The resolution of this image is 3.6 angstroms per pixel, or just under four ten-billionths of a meter per image unit. http://newscenter.lbl.gov/feature-stories/2010/01/21/glutamate-receptor/

None

2010-01-01T23:59:59.000Z

348

Science and Technology of Future Light Sources  

E-Print Network [OSTI]

and storage of high-energy-density materials and forsuperconducting materials where very high energy resolutionin correlated materials through high-resolution energy- and

Bergmann, Uwe

2009-01-01T23:59:59.000Z

349

SLAC Linac Coherent Light Source User Site  

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

(2013-2016) Biology (BIO)Atomic, Molecular and Optical Science (AMO) Steve Johnson ETH Zurich (2013-2016) Materials Science - Hard Condensed Matter (HCM) Gianluca Gregori...

350

Sandia National Laboratories: Advanced Light Source  

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

Doppler Velocimeter EC Top Publications A Comparison of Platform Options for Deep-water Floating Offshore Vertical Axis Wind Turbines: An Initial Study Nonlinear Time-Domain...

351

Technical Bulletins | Advanced Photon Source  

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

Technical Bulletins Technical Bulletins For questions regarding the content of Technical Bulletins, contact webmaster. All documents are PDFs. TB # Title Date TB-54 Dose Calculations using MARS for Bremsstrahlung Beam Stops and Collimators in APS Beamline Stations 8/31/10 TB-53 Insertion Devices: Magnetic Measurements and Tuning--Part 1 - Magnetic Sensors and Measurement Techniques 10/1/10 TB-52 2006 XSD Scientific Software Workshop - Survey Responses 8/25/06 TB-51 2006 XSD Scientific Software Workshop Report 10/31/06 TB-50 Thermal Analysis of the Components of the Insertion Device Front Ends FEv1.2 and FEv1.5 7/1/05 TB-49 A New Magnetic Field Integral Measurement System 1/1/05 TB-48 LCLS Prototype Undulator Report 1/1/04 TB-47 XFD Progress Report 12/1/02 TB-46 LCLS - The First Experiments 9/1/02

352

Lighting Renovations  

Broader source: Energy.gov [DOE]

When undertaking a lighting renovation in a Federal building, daylighting is the primary renewable energy opportunity. Photovoltaics (PV) also present an excellent opportunity. While this guide...

353

Cerenkov Light  

ScienceCinema (OSTI)

The bright blue glow from nuclear reactors is Cerenkov light. Karl Slifer describes how nuclear physicists can use this phenomenon to study the nucleus of the atom.

Slifer, Karl

2014-05-22T23:59:59.000Z

354

Review Absorbance Based Light Emitting Diode Optical Sensors and Sensing Devices  

E-Print Network [OSTI]

emitting diodes (LEDs) as light sources is one strategy, which has been successfully applied in chemical

Dermot Diamond

355

An unsuccessful attempt to elicit orientation responses to linearly polarized light in hatchling loggerhead sea turtles (Caretta caretta)  

Science Journals Connector (OSTI)

...a steady course towards a light-emitting diode (LED) light source while...tethered in the tank with a light-emitting diode (LED) light source placed...a steady course towards a light-emitting diode (LED) light source while...

2011-01-01T23:59:59.000Z

356

Radioluminescent (RL) airfield lighting system program  

SciTech Connect (OSTI)

In 1980, the US Air Force Engineering and Services Center (AFESC) at Tyndall Air Force Base, Florida, requested that the Radioisotope Technology Group of Oak Ridge National Laboratory (ORNL) develop large-scale, tritium-powered, radioluminescent (RL) airfield lighting systems. The RL lighting systems possess the advantages of being portable, requiring no electrical power source, having a long shelf life, and being unaffected by environmental extremes. These characteristics make the RL system well-suited for harsh environments where the cost of electrical power production is high and traditional incandescent airfield lighting systems are difficult to maintain. RL lighting is typically a large-surface-area, low-intensity light source that operates 100% of the time. The RL light sources gradually decrease in brightness over time, so periodic replacement (every 6 to 8 years) is necessary. RL lighting functions best in low ambient light, which provides the high contrast ratios necessary for successful use of these devices. 12 figs., 8 tabs.

Tompkins, J.A. (Westinghouse Electric Corp., Las Vegas, NV (USA)); Haff, K.W.; Schultz, F.J. (Oak Ridge National Lab., TN (USA))

1990-09-01T23:59:59.000Z

357

Types of Lighting in Commercial Buildings - Lighting Characteristics  

U.S. Energy Information Administration (EIA) Indexed Site

Characteristics of Lighting Types Characteristics of Lighting Types Efficacy Efficacy is the amount of light produced per unit of energy consumed, expressed in lumens per watt (lm/W). Lamps with a higher efficacy value are more energy efficient. Average Rated Life The average rated life of a particular type of lamp is defined by the number of hours when 50 percent of a large sample of that type of lamp has failed. Color Rendering Index (CRI) The CRI is a measurement of a light source's accuracy in rendering different colors when compared to a reference light source. The highest attainable CRI is 100. Lamps with CRIs above 70 are typically used in office and living environments. Correlated Color Temperature (CCT) The CCT is an indicator of the "warmth" or "coolness" of the color

358

OLED area illumination source  

DOE Patents [OSTI]

The present invention relates to an area illumination light source comprising a plurality of individual OLED panels. The individual OLED panels are configured in a physically modular fashion. Each OLED panel comprising a plurality of OLED devices. Each OLED panel comprises a first electrode and a second electrode such that the power being supplied to each individual OLED panel may be varied independently. A power supply unit capable of delivering varying levels of voltage simultaneously to the first and second electrodes of each of the individual OLED panels is also provided. The area illumination light source also comprises a mount within which the OLED panels are arrayed.

Foust, Donald Franklin (Scotia, NY); Duggal, Anil Raj (Niskayuna, NY); Shiang, Joseph John (Niskayuna, NY); Nealon, William Francis (Gloversville, NY); Bortscheller, Jacob Charles (Clifton Park, NY)

2008-03-25T23:59:59.000Z

359

The History of X-ray Free-Electron Lasers  

SciTech Connect (OSTI)

The successful lasing at the SLAC National Accelerator Laboratory of the Linear Coherent Light Source (LCLS), the first X-ray free-electron laser (X-ray FEL), in the wavelength range 1.5 to 15 {angstrom}, pulse duration of 60 to few femtoseconds, number of coherent photons per pulse from 10{sup 13} to 10{sup 11}, is a landmark event in the development of coherent electromagnetic radiation sources. Until now electrons traversing an undulator magnet in a synchrotron radiation storage ring provided the best X-ray sources. The LCLS has set a new standard, with a peak X-ray brightness higher by ten orders of magnitudes and pulse duration shorter by three orders of magnitudes. LCLS opens a new window in the exploration of matter at the atomic and molecular scales of length and time. Taking a motion picture of chemical processes in a few femtoseconds or less, unraveling the structure and dynamics of complex molecular systems, like proteins, are some of the exciting experiments made possible by LCLS and the other X-ray FELs now being built in Europe and Asia. In this paper, we describe the history of the many theoretical, experimental and technological discoveries and innovations, starting from the 1960s and 1970s, leading to the development of LCLS.

Pellegrini, C.; /UCLA /SLAC; ,

2012-06-28T23:59:59.000Z

360

Northern Lights  

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

Northern Lights Northern Lights Nature Bulletin No. 178-A February 6, 1965 Forest Preserve District of Cook County Seymour Simon, President Roland F. Eisenbeis, Supt. of Conservation NORTHERN LIGHTS To a person seeing the Aurora Borealis or "northern lights" for the first time, it is an uncanny awe-inspiring spectacle. Sometimes it begins as a glow of red on the northern horizon, ominously suggesting a great fire, gradually changing to a curtain of violet-white, or greenish-yellow light extending from east to west. Some times this may be transformed to appear as fold upon fold of luminous draperies that march majestically across the sky; sometimes as a vast multitude of gigantic flaming swords furiously slashing at the heavens; sometimes as a flowing crown with long undulating colored streamers fanning downward and outward.

Note: This page contains sample records for the topic "light source lcls" 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

Turning on LAMP  

ScienceCinema (OSTI)

Christoph Bostedt, a senior staff scientist at SLAC's Linac Coherent Light Source X-ray laser, provides a sneak peek of a powerful new instrument, called LAMP, that is now available for experiments that probe the atomic and molecular realm. LAMP replaces and updates the first instrument at LCLS, dubbed CAMP, which will be installed at an X-ray laser in Germany.

Bostedt, Christoph

2014-07-16T23:59:59.000Z

362

Turning on LAMP  

SciTech Connect (OSTI)

Christoph Bostedt, a senior staff scientist at SLAC's Linac Coherent Light Source X-ray laser, provides a sneak peek of a powerful new instrument, called LAMP, that is now available for experiments that probe the atomic and molecular realm. LAMP replaces and updates the first instrument at LCLS, dubbed CAMP, which will be installed at an X-ray laser in Germany.

Bostedt, Christoph

2014-06-30T23:59:59.000Z

363

Secretary Chu to Join Representatives Lofgren and Honda at the SLAC  

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

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

364

Solid-State Lighting: LED Lighting Facts  

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

Market-Based Programs Printable Version Share this resource Send a link to Solid-State Lighting: LED Lighting Facts to someone by E-mail Share Solid-State Lighting: LED Lighting Facts on Facebook Tweet about Solid-State Lighting: LED Lighting Facts on Twitter Bookmark Solid-State Lighting: LED Lighting Facts on Google Bookmark Solid-State Lighting: LED Lighting Facts on Delicious Rank Solid-State Lighting: LED Lighting Facts on Digg Find More places to share Solid-State Lighting: LED Lighting Facts on AddThis.com... LED Lighting Facts CALiPER Program Standards Development Technical Information Network Gateway Demonstrations Municipal Consortium Design Competitions LED Lighting Facts LED lighting facts - A Program of the U.S. DOE DOE's LED Lighting Facts® program showcases LED products for general

365

SSRL HEADLINES Feb 2002  

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

8 February, 2002 8 February, 2002 __________________________________________________________________________ Contents of This Issue: Science Highlight - Can Sulfur X-ray Spectroscopy Save the 17th-Century Swedish Warship Vasa? SPEAR3 Shutdown Begins a New Era at SSRL (April 2003-January 2004) SSRL Proposal Review Panel Holds 52nd Meeting LCLS Science Advisory Committee Meets and LCLS Makes the President's FY2003 Budget for Project Engineering and Design Plans for an Australian Light Source Upcoming Events at SSRL and Elsewhere User Research Administration Announcements __________________________________________________________________________ 1. Science Highlight - Can Sulfur X-ray Spectroscopy Save the 17th-Century Swedish Warship Vasa? (contact: Magnus Sandström, magnuss@struc.su.se)

366

Electronic equilibrium as a function of depth in tissue from Cobalt-60 point source exposures  

E-Print Network [OSTI]

the X- Y plane. The scanning system consists of a light source, focusing system, photosensing detector, and precision computer controlled linear translation tables. A light emitting diode (LED) is the light source for the system. The proportion... the X- Y plane. The scanning system consists of a light source, focusing system, photosensing detector, and precision computer controlled linear translation tables. A light emitting diode (LED) is the light source for the system. The proportion...

Myrick, Jo Ann

2012-06-07T23:59:59.000Z

367

Lighting Research Group: Facilities: Goniometer  

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

Goniometer Goniometer gonio-photometer Gonio-Photometer Gonio-photometer | Integrating sphere | Power analyzer | Spectro-radiometer The gonio-photometer (or goniometer for short) is able to measure the illuminance from each portion of a lamp or fixture. There are three main components to the goniometer: (1) the rotating table that the fixture or lamp is placed on, (2) the long arm with a mirror on the end that rotates around the fixture and (3) a light sensor that measures the light reflected by the mirror. The light source (whether it is in a fixture or not) is placed in the middle of the goniometer, sitting on the rotating table. The rotating table can be adjusted up and down to make sure that the light source is in the very center of the goniometer. When the lamp is positioned this way, the

368

Current Projects | U.S. DOE Office of Science (SC)  

Office of Science (SC) Website

Current Current Projects SLAC Site Office (SSO) SSO Home About Current Projects Contract Management Environment, Safety and Health (ES&H) Contact Information SLAC Site Office U.S. Department of Energy Bldg 41, M/S 08A 2575 Sand Hill Road Menlo Park, CA 94025 P: (650) 926-2505 Current Projects Print Text Size: A A A RSS Feeds FeedbackShare Page Linear Coherent Light Source (LCLS)-II will add two new X-ray laser beams and room for additional new instruments, greatly increasing the number of experiments carried out each year. Its new capabilities will allow scientists to do important research that cannot be done anywhere today, including work in drug development, energy science and advanced materials. https://portal.slac.stanford.edu/sites/lcls_public/lcls_ii/Pages/default.aspx External link

369

APS User News-at-a-Glance, Issue 5  

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

370

Light's twist  

Science Journals Connector (OSTI)

...Glasgow G12 8QQ, UK An invited Perspective to mark the election of Miles Padgett to the fellowship of the Royal Society in 2014. That...energy and momentum flow within light beams can twist to form vortices such as eddies in a stream. These...

2014-01-01T23:59:59.000Z

371

Renaissance Lighting Inc | Open Energy Information  

Open Energy Info (EERE)

Lighting Inc Lighting Inc Jump to: navigation, search Name Renaissance Lighting Inc. Place Herndon, Virginia Product Utilizing patented LED optics, Renaissance Lighting delivers uniformity in wall wash and floodlight applications by using fewer luminaires, powered by efficient sources, to produce only the amount of light needed References Renaissance Lighting Inc.[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Renaissance Lighting Inc. is a company located in Herndon, Virginia . References ↑ "Renaissance Lighting Inc." Retrieved from "http://en.openei.org/w/index.php?title=Renaissance_Lighting_Inc&oldid=350285" Categories: Clean Energy Organizations

372

Texas Electric Lighting Report  

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

electric lighting electric lighting The SNAP House's lighting design aims for elegant simplicity in concept, use, and maintenance. Throughout the house, soft, ambient light is juxtaposed with bright, direct task lighting. All ambient and most task lighting is integrated directly into the architectural design of the house. An accent light wall between the bedroom and bathroom provides a glowing light for nighttime navigation.

373

Electron Beam Ion Sources  

E-Print Network [OSTI]

Electron beam ion sources (EBISs) are ion sources that work based on the principle of electron impact ionization, allowing the production of very highly charged ions. The ions produced can be extracted as a DC ion beam as well as ion pulses of different time structures. In comparison to most of the other known ion sources, EBISs feature ion beams with very good beam emittances and a low energy spread. Furthermore, EBISs are excellent sources of photons (X-rays, ultraviolet, extreme ultraviolet, visible light) from highly charged ions. This chapter gives an overview of EBIS physics, the principle of operation, and the known technical solutions. Using examples, the performance of EBISs as well as their applications in various fields of basic research, technology and medicine are discussed.

Zschornacka, G; Thorn, A

2013-01-01T23:59:59.000Z

374

Smart Lighting: A Second Wave in Solid State Lighting?  

E-Print Network [OSTI]

is Smart Lighting? · A Second Wave? #12;Bulbs transition to..... Bulbs! 3 · Sockets exist, so why not use them? (faster revenue, energy savings) · LED sources are mostly lower brightness · LED idiosyncrasies make broad incandescent and fluorescent replacement difficult ­ new fixtures coming First Wave #12

Salama, Khaled

375

The Effect of Debris on Collector Optics, its Mitigation and Repair: Next-Step a Gaseous Sn EUV DPP Source  

E-Print Network [OSTI]

Laboratory (IDEAL) is continuing research with a dense plasma focus (DPF) light source. The IDEAL DPF

Spila, Timothy P.

376

Solid-State Lighting—L Prize Competition  

Broader source: Energy.gov [DOE]

The L Prize competition spurs the development of new, ultra-efficient lighting products to replace common light sources, including the 60-watt (W) incandescent bulb and the PAR38 reflector bulb.

377

Renewable Power and Light | Open Energy Information  

Open Energy Info (EERE)

and Light and Light Jump to: navigation, search Name Renewable Power and Light Place London, Greater London, United Kingdom Zip W1 J5P2 Sector Biofuels, Renewable Energy Product Renewable Power and Light intend to become a power producer generating from renewable sources with renewable technologies, in particluar with regard to biofuels. References Renewable Power and Light[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Renewable Power and Light is a company located in London, Greater London, United Kingdom . References ↑ "Renewable Power and Light" Retrieved from "http://en.openei.org/w/index.php?title=Renewable_Power_and_Light&oldid=350347"

378

OLEDS FOR GENERAL LIGHTING  

SciTech Connect (OSTI)

The goal of this program was to reduce the long term technical risks that were keeping the lighting industry from embracing and developing organic light-emitting diode (OLED) technology for general illumination. The specific goal was to develop OLEDs for lighting to the point where it was possible to demonstrate a large area white light panel with brightness and light quality comparable to a fluorescence source and with an efficacy comparable to that of an incandescent source. it was recognized that achieving this would require significant advances in three area: (1) the improvement of white light quality for illumination, (2) the improvement of OLED energy efficiency at high brightness, and (3) the development of cost-effective large area fabrication techniques. The program was organized such that, each year, a ''deliverable'' device would be fabricated which demonstrated progress in one or more of the three critical research areas. In the first year (2001), effort concentrated on developing an OLED capable of generating high illumination-quality white light. Ultimately, a down-conversion method where a blue OLED was coupled with various down-conversion layers was chosen. Various color and scattering models were developed to aid in material development and device optimization. The first year utilized this approach to deliver a 1 inch x 1 inch OLED with higher illumination-quality than available fluorescent sources. A picture of this device is shown and performance metrics are listed. To their knowledge, this was the first demonstration of true illumination-quality light from an OLED. During the second year, effort concentrated on developing a scalable approach to large area devices. A novel device architecture consisting of dividing the device area into smaller elements that are monolithically connected in series was developed. In the course of this development, it was realized that, in addition to being scalable, this approach made the device tolerant to the most common OLED defect--electrical shorts. This architecture enabled the fabrication of a 6 inch x 6 inch OLED deliverable for 2002. A picture of this deliverable is shown and the performance metrics are listed. At the time, this was the highest efficiency, highest lumen output illumination-quality OLED in existence. The third year effort concentrated on improving the fabrication yield of the 6 inch x 6 inch devices and improving the underlying blue device efficiency. An efficiency breakthrough was achieved through the invention of a new device structure such that now 15 lumen per watt devices could be fabricated. A 2 feet x 2 feet OLED panel consisting of sixteen 6 inch x 6 inch high efficiency devices tiled together was then fabricated. Pictures of this panel are shown with performance metrics listed. This panel met all project objectives and was the final deliverable for the project. It is now the highest efficiency, highest lumen output, illumination-quality OLED in existence.

Anil Duggal; Don Foust; Chris Heller; Bill Nealon; Larry Turner; Joe Shiang; Nick Baynes; Tim Butler; Nalin Patel

2004-02-29T23:59:59.000Z

379

Lighting Test Facilities  

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

Custom Projects Lighting Test Facilities SSL Guidelines Industrial Federal Agriculture LED Street and Area Lighting Field Test of Exterior LED Down Lights Abstract Outdoor...

380

Light Water Reactor Sustainability  

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

4 Light Water Reactor Sustainability ACCOMPLISHMENTS REPORT 2014 Accomplishments Report | Light Water Reactor Sustainability 2 T he mission of the Light Water Reactor...

Note: This page contains sample records for the topic "light source lcls" 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

LCLS CDR Chapter 4 - FEL Physics  

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

4 4 FEL Physics TECHNICAL SYNOPSIS This chapter presents a review of the historical and technological developments of the Free Electron Laser that led to proposals to operate an FEL in the large gain regime, starting from the spontaneous radiation noise, without using an optical cavity. In this mode, called "Self- Amplified-Spontaneous-Emission" (SASE), lasing is produced in a single pass of an electron beam with high phase-space density through a long undulator, eliminating the need for optical cavities, which are difficult to build in the soft x-ray or x-ray spectral region. A discussion of the spontaneous radiation produced in an undulator introduces the concepts and formulae for the radiation intensity, the number of photons produced per electron,

382

LCLS CDR Appendix A - Parameter Tables  

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

Y direction 0.5 mm Supporting pillar alignment: Z direction 2.0 mm Pitch, roll and yaw of pillars 0.75 mrad Undulator vertical and horizontal remote 2.0 mm Undulator...

383

Lakeview Light and Power - Energy Smart Grocer Rebate Program | Department  

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

Lakeview Light and Power - Energy Smart Grocer Rebate Program Lakeview Light and Power - Energy Smart Grocer Rebate Program Lakeview Light and Power - Energy Smart Grocer Rebate Program < Back Eligibility Commercial Savings Category Heating & Cooling Commercial Heating & Cooling Cooling Home Weatherization Construction Commercial Weatherization Design & Remodeling Manufacturing Sealing Your Home Windows, Doors, & Skylights Appliances & Electronics Commercial Lighting Lighting Other Program Info Funding Source Lakeview Light and Power and Bonneville Power Administration State District of Columbia Program Type Utility Rebate Program Rebate Amount Varies by technology Provider Lakeview Light and Power Lakeview Light and Power, in association with the Bonneville Power Administration, offers the Energy Smart Program through which grocery

384

United States Government Department of Energy  

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

F 1325.8 F 1325.8 (8-89) EFG (07-90) United States Government Department of Energy memorandum DATE: December 18, 2006 Report Number: OAS-L-07-04 REPLY TO ATTN OF: IG-32 (A07LL039) SUBJECT: Report on "Inquiry to the Hotline Complaint on Possible Design Mistakes and Cost Overruns of the Linac Coherent Light Source Project at Stanford Linear Accelerator Center" TO: Manager, Stanford Site Office INTRODUCTION AND OBJECTIVE The purpose of the Stanford Linear Accelerator Center (SLAC) Linac Coherent Light Source (LCLS) project is to provide laser-like radiation in the x-ray region of the spectrum that is 10 billion times greater in peak brightness than any existing coherent x-ray light source. The LCLS will be an important tool in the study of, among other things, materials

385

EA-1426: Final Environmental Assessment | Department of Energy  

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

6: Final Environmental Assessment 6: Final Environmental Assessment EA-1426: Final Environmental Assessment Linac Coherent Light Source Experimental Facility The DOE proposes to construct and operate a new research facility at SLAC, the Linac Coherent Light Source (LCLS), as a collaborative effort with other DOE facilities. The purpose and need for the LCLS is the creation of a new type of x-ray light source from a single pass free electron laser (FEL). The FEL would have a peak brightness 10 orders of magnitude greater and with faster pulses (in the sub-picosecond range), than the most intense synchrotrons currently available. The higher peak brightness would allow examination of much smaller particles, and the faster pulses would allow scientists to evaluate changes within a very short timeframe. As with the

386

EA-1426: Final Environmental Assessment | Department of Energy  

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

426: Final Environmental Assessment 426: Final Environmental Assessment EA-1426: Final Environmental Assessment Linac Coherent Light Source Experimental Facility The DOE proposes to construct and operate a new research facility at SLAC, the Linac Coherent Light Source (LCLS), as a collaborative effort with other DOE facilities. The purpose and need for the LCLS is the creation of a new type of x-ray light source from a single pass free electron laser (FEL). The FEL would have a peak brightness 10 orders of magnitude greater and with faster pulses (in the sub-picosecond range), than the most intense synchrotrons currently available. The higher peak brightness would allow examination of much smaller particles, and the faster pulses would allow scientists to evaluate changes within a very short timeframe. As with the

387

Light Bodies: Exploring Interactions with Responsive Lights  

E-Print Network [OSTI]

reinterpretation of street lighting. Before fixed infrastructure illuminated cities at night, people carried Urban street lighting today is a networked, fixed infrastructure that relies on the electrical grid. WeLight Bodies: Exploring Interactions with Responsive Lights Susanne Seitinger MIT Media Laboratory

Hunt, Galen

388

Contaminant Sources  

Science Journals Connector (OSTI)

Contaminant sources include almost every component in the manufacturing process: people, materials, processing equipment, and manufacturing environments. People can generate contaminating particles, gases, conden...

Alvin Lieberman

1992-01-01T23:59:59.000Z

389

Ion source  

DOE Patents [OSTI]

A magnetic filter for an ion source reduces the production of undesired ion species and improves the ion beam quality. High-energy ionizing electrons are confined by the magnetic filter to an ion source region, where the high-energy electrons ionize gas molecules. One embodiment of the magnetic filter uses permanent magnets oriented to establish a magnetic field transverse to the direction of travel of ions from the ion source region to the ion extraction region. In another embodiment, low energy 16 eV electrons are injected into the ion source to dissociate gas molecules and undesired ion species into desired ion species.

Leung, Ka-Ngo (Hercules, CA); Ehlers, Kenneth W. (Alamo, CA)

1984-01-01T23:59:59.000Z

390

Lighting | Department of Energy  

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

Lighting Lighting Lighting When you're shopping for lightbulbs, compare lumens and use the Lighting Facts label to be sure you're getting the amount of light, or level of brightness, you want. You can save money and energy while lighting your home and still maintaining good light quantity and quality. Consider energy-efficient lighting options to use the same amount of light for less money. Learn strategies for comparing and buying lighting products and using them efficiently. Featured Lighting Choices to Save You Money Light your home for less money while using the same amount of light. How Energy-Efficient Light Bulbs Compare with Traditional Incandescents Energy-efficient light bulbs are available today and could save you about $50 per year in energy costs when you replace 15 traditional incandescent bulbs in your home.

391

STATUS OF THE LIGHT ION SOURCE DEVELOPMENTS AT CEA/SACLAY R. Gobin*, P-Y. Beauvais, D. Bogard, G. Charruau, O. Delferrire, D. De Menezes, A. France, R. Ferdinand, Y. Gauthier,  

E-Print Network [OSTI]

L. Celona, Istituto Nationale de Fisica Nucleare, LNS, via Sofia, Catania, Italy J. Sherman, Los of high power accelerator. The source regularly delivers more than 130 mA protons in CW mode and already, will have to fit in with the SPIRAL 2 accelerator developed at GANIL to produce Radioactive Ion Beams. The H

Boyer, Edmond

392

Solid state electrochromic light modulator  

DOE Patents [OSTI]

An all solid-state variable transmission electrochromic device has a source of charge compensating ions. An inorganic oxide counterelectrode film which on reduction with the accompanying insertion of the charge compensating ions increases its transmission of light of predetermined wavelength is separated from a primary electrochromic film which on reduction with the accompanying insertion of the charge compensating ions decreases its transmission of light of predetermined wavelength by an insulating electrolyte film that transports the charge compensating ions. First and second electrodes are contiguous with the inorganic oxide counter electrode film and the primary electrochromic film, respectively, and separated by the three films.

Cogan, Stuart F. (111 Downey St., Norwood, MA 02062); Rauh, R. David (111 Downey St., Norwood, MA 02062)

1990-01-01T23:59:59.000Z

393

Solid state electrochromic light modulator  

DOE Patents [OSTI]

An all solid-state variable transmission electrochromic device has a source of charge compensating ions. An inorganic oxide counterelectrode film which on reduction with the accompanying insertion of the charge compensating ions increases its transmission of light of predetermined wavelength is separated from a primary electrochromic film which on reduction with the accompanying insertion of the charge compensating ions decreases its transmission of light of predetermined wavelength by an insulating electrolyte film that transports the charge compensating ions. First and second electrodes are contiguous with the inorganic oxide counter electrode film and the primary electrochromic film, respectively, and separated by the three films.

Cogan, Stuart F. (Sudbury, MA); Rauh, R. David (Newton, MA)

1993-01-01T23:59:59.000Z

394

Solid state electrochromic light modulator  

DOE Patents [OSTI]

An all solid-state variable transmission electrochromic device has a source of charge compensating ions. An inorganic oxide counter electrode film which on reduction with the accompanying insertion of the charge compensating ions increases its transmission of light of predetermined wavelength is separated from a primary electrochromic film which on reduction with the accompanying insertion of the charge compensating ions decreases its transmission of light of predetermined wavelength by an insulating electrolyte film that transports the charge compensating ions. First and second electrodes are contiguous with the inorganic oxide counter electrode film and the primary electrochromic film, respectively, and separated by the three films. 4 figs.

Cogan, S.F.; Rauh, R.D.

1990-07-03T23:59:59.000Z

395

Architectural Lighting Analysis in Virtual Lighting Laboratory  

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

Architectural Lighting Analysis in Virtual Lighting Laboratory Architectural Lighting Analysis in Virtual Lighting Laboratory Speaker(s): Mehlika Inanici Date: July 7, 2003 - 12:00pm Location: Bldg. 90 Seminar Host/Point of Contact: Satkartar K. Kinney Virtual Lighting Laboratory is a Radiance-based lighting analysis tool and methodology that proposes transformations in the utilization of computer visualization in lighting analysis and design decision-making. It is a computer environment, where the user has been provided with matrices of illuminance and luminance values extracted from high dynamic range images. The principal idea is to provide the laboratory to the designer and researcher to explore various lighting analysis techniques instead of imposing limited number of predetermined metrics. In addition, it introduces an analysis approach for temporal and spatial lighting

396

Competitive Sourcing  

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

COMPETITIVE SOURCING COMPETITIVE SOURCING ▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬ Report on Competitive Sourcing Results Fiscal Year 2006 May 2007 Executive Office of the President Office of Management and Budget TABLE OF CONTENTS Executive Summary ...................................................................................... 1 Introduction................................................................................................. 4 I. The big picture ......................................................................................... 4 II. How public-private competition was used in FY 2006 .................................... 6 A. Anticipated benefits from competition in FY 2006

397

Cost effective lighting  

SciTech Connect (OSTI)

Long-life replacement lamps for the incandescent lamp have been evaluated with regard to their cost effectiveness. The replacements include the use of energy buttons that extend lamp life as well as an adaptive fluorescent circline lamp that will fit into existing incandescent lamp sockets. The initial, operating, and replacement costs for one million lumen-hours are determined for each lamp system. We find the most important lighting cost component is the operating cost. Using lamps that are less efficient or devices that cause lamps to operate less efficiently are not cost-effective. The adaptive fluorescent circline lamp, even at an initial cost of $15.00, is the most cost effective source of illumination compared to the incandescent lamp and lamp systems examined. 3 refs., 6 tabs.

Morse, O.; Verderber, R.

1987-07-01T23:59:59.000Z

398

Creating computer generated scene lighting in the style of Edward Hopper  

E-Print Network [OSTI]

interior illumination to be the sole, dramatic source of light.”[12] The bright yellow incandescent light is the main source of light in the scene. Inside the right window, there is a shaded lamp that locally emits red light. Comparing the color... of the two window shades, the incandescent light is positioned a bit left of the center of the room. Most of the shading in the room and the building’s interior made by the incandescent light is clear. There seems to be no light source coming from...

Jo, Hee Yeon

2008-10-10T23:59:59.000Z

399

Mobile lighting apparatus  

DOE Patents [OSTI]

A mobile lighting apparatus includes a portable frame such as a moveable trailer or skid having a light tower thereon. The light tower is moveable from a stowed position to a deployed position. A hydrogen-powered fuel cell is located on the portable frame to provide electrical power to an array of the energy efficient lights located on the light tower.

Roe, George Michael; Klebanoff, Leonard Elliott; Rea, Gerald W; Drake, Robert A; Johnson, Terry A; Wingert, Steven John; Damberger, Thomas A; Skradski, Thomas J; Radley, Christopher James; Oros, James M; Schuttinger, Paul G; Grupp, David J; Prey, Stephen Carl

2013-05-14T23:59:59.000Z

400

Asynchronous indoor positioning system based on visible light  

E-Print Network [OSTI]

employ fluorescent lamps and light-emitting diodes (LEDs). VLC-based techniques have the advantage of light-emitting diode bulbs. © 2014 Society of Photo-Optical Instrumentation Engineers (SPIE) [DOI: 10. Most of the VLC-based techniques use LEDs as the light source, since they can be modulated more easily

Kavehrad, Mohsen

Note: This page contains sample records for the topic "light source lcls" 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

The solid state lighting initiative: An industry/DOE collaborativeeffort  

SciTech Connect (OSTI)

A new era of technology is emerging in lighting. It is being propelled by the dramatic improvements in performance of solid state light sources. These sources offer an entirely new array of design aspects not achievable with current light sources. At the same time, their performance characteristics continue to improve and are expected to eclipse those of the most common light sources within the near future. High efficiency is one of these performance attributes motivating the Department of Energy (DOE) to work with the manufacturers of this new technology to create a program plan sufficiently comprehensive to support an industry-driven Solid State Lighting Initiative before Congress. The purpose of the initiative is to educate Congress about the potential of this technology to reduce the electric lighting load within the United States and, consequently, to realize the associated environmental benefits. The initiative will solicit congressional support to accelerate the development of solid state technology through investment in the research and development necessary to overcome the technical barriers that currently limit the products to niche markets. While there are multiple technologies being developed as solid state light sources, the two technologies which hold the most promise for application to general illumination are Light Emitting Diodes (LEDs) and Organic Light Emitting Diodes (OLEDs). The form of these sources can be quite different from current sources, allowing exciting new design uses for the products. Being diffuse sources, OLEDs are much lower in intensity per unit area than LEDs. The manufacturing process for OLEDs lends itself to shapes that can be formed to different geometries, making possible luminous panels or flexible luminous materials. Conversely, LEDs are very intense point sources which can be integrated into a small space to create an intense source or used separately for less focused applications. Both OLED and LED sources are expected to be thinner than other comparable sources; this thinness offers additional design opportunities.

Johnson, Steve

2000-10-01T23:59:59.000Z

402

Light Old and New  

Science Journals Connector (OSTI)

The Sun, Moon and stars have been our lights since the earliest times. We have learned ... have much more recently filled our homes and streets with artificial lighting. We are, however, in danger of...natural lights

Bob Mizon

2002-01-01T23:59:59.000Z

403

Lighting | Department of Energy  

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

to installing LEDs in existing fixtures. Tips and Advice Tips: Lighting Lighting choices save you money. Energy-efficient light bulbs are available in a wide variety of sizes...

404

Natural lighting and skylights  

E-Print Network [OSTI]

There are many physiological and psychological factors which enter into the proper design of space for human occupancy. One of these elements is light. Both natural light and manufactured light are basic tools with which any designer must work...

Evans, Benjamin Hampton

1961-01-01T23:59:59.000Z

405

Parametric light generation  

Science Journals Connector (OSTI)

...potential to deliver coherent light with high spectral purity...universal constants such as the speed of light. Single- frequency CW...assessment of optical switching speeds in telecommunication technology...A (2003) Parametric light generation 2749 ment of...

2003-01-01T23:59:59.000Z

406

Types of Lighting in Commercial Buildings - Introduction  

U.S. Energy Information Administration (EIA) Indexed Site

Introduction Introduction Lighting is a major consumer of electricity in commercial buildings and a target for energy savings through use of energy-efficient light sources along with other advanced lighting technologies. The Commercial Buildings Energy Consumption Survey (CBECS) collects information on types of lighting equipment, the amount of floorspace that is lit, and the percentage of floorspace lit by each type. In addition, CBECS data are used to model end-use consumption, including energy consumed for lighting in commercial buildings. CBECS building characteristics data can answer a wide range of questions about lighting from the most basic, "How many buildings are lit?" to more detailed questions such as, "How many office buildings have compact

407

Solid-state lighting technology perspective.  

SciTech Connect (OSTI)

Solid-State Lighting (SSL) uses inorganic light-emitting diodes (LEDs) and organic light-emitting diodes (OLEDs) to convert electricity into light for illumination. SSL has the potential for enormous energy savings and accompanying environmental benefits if its promise of 50% (or greater) energy efficiencies can be achieved. This report provides a broad summary of the technologies that underlie SSL. The applications for SSL and potential impact on U.S. and world-wide energy consumption, and impact on the human visual experience are discussed. The properties of visible light and different technical metrics to characterize its properties are summarized. The many factors contributing to the capital and operating costs for SSL and traditional lighting sources (incandescent, fluorescent, and high-intensity discharge lamps) are discussed, with extrapolations for future SSL goals. The technologies underlying LEDs and OLEDs are also described, including current and possible alternative future technologies and some of the present limitations.

Tsao, Jeffrey Yeenien; Coltrin, Michael Elliott

2006-08-01T23:59:59.000Z

408

Lighting Group: Links  

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

Links Links Links Organizations Illuminating Engineering Society of North America (IESNA) International Commission on Illumination (CIE) International Association of Lighting Designers (IALD) International Association of Energy-Efficient Lighting Lightfair International Energy Agency - Task 21: Daylight in Buildings: Design Tools and Performance Analysis International Energy Agency - Task 31: Daylighting Buildings in 21st Century National Association on Qualifications for the Lighting Professions (NCQLP) National Association of Independent Lighting Distributors (NAILD) International Association of Lighting Management Companies (NALMCO) Research Centers California Lighting Technology Center Lighting Research Center Lighting Research at Canada Institute for Research in Construction

409

Advanced Demand Responsive Lighting  

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

Demand Demand Responsive Lighting Host: Francis Rubinstein Demand Response Research Center Technical Advisory Group Meeting August 31, 2007 10:30 AM - Noon Meeting Agenda * Introductions (10 minutes) * Main Presentation (~ 1 hour) * Questions, comments from panel (15 minutes) Project History * Lighting Scoping Study (completed January 2007) - Identified potential for energy and demand savings using demand responsive lighting systems - Importance of dimming - New wireless controls technologies * Advanced Demand Responsive Lighting (commenced March 2007) Objectives * Provide up-to-date information on the reliability, predictability of dimmable lighting as a demand resource under realistic operating load conditions * Identify potential negative impacts of DR lighting on lighting quality Potential of Demand Responsive Lighting Control

410

Modeling LED street lighting  

Science Journals Connector (OSTI)

LED luminaires may deliver precise illumination patterns to control light pollution, comfort, visibility, and light utilization efficiency. Here, we provide simple equations to...

Moreno, Ivan; Avendańo-Alejo, Maximino; Saucedo-A, Tonatiuh; Bugarin, Alejandra

2014-01-01T23:59:59.000Z

411

Lighting | Open Energy Information  

Open Energy Info (EERE)

TODO: Add description List of Lighting Incentives Retrieved from "http:en.openei.orgwindex.php?titleLighting&oldid267174" Category: Articles with outstanding TODO tasks...

412

Competitive Sourcing  

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

Competitive Sourcing Competitive Sourcing The Department of Energy's (DOE) Competitive Sourcing program is a management initiative aimed at improving DOE's performance and reducing the Department's operational costs. The program is governed by Office of Management and Budget (OMB) Circular A- 76, Performance of Commercial Activities, dated May 29, 2003. The commercial activities selected for review and competition include functions performed by government employees that are readily available in the private sector, and where the potential for efficiencies, regardless of the winning provider, are highly likely. The candidate functions are chosen from the Department's annual Federal Activities Inventory Reform (FAIR) Act Inventory and subjected to a feasibility review to determine if a prudent business case can be made to enter

413

Cree LED Lighting Solutions Formerly LED Lighting Fixtures LLF...  

Open Energy Info (EERE)

LED Lighting Solutions Formerly LED Lighting Fixtures LLF Jump to: navigation, search Name: Cree LED Lighting Solutions (Formerly LED Lighting Fixtures (LLF)) Place: Morrisville,...

414

Light Duty Combustion Research: Advanced Light-Duty Combustion...  

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

Light Duty Combustion Research: Advanced Light-Duty Combustion Experiments Light Duty Combustion Research: Advanced Light-Duty Combustion Experiments 2009 DOE Hydrogen Program and...

415

Types of Lighting in Commercial Buildings - Full Report  

U.S. Energy Information Administration (EIA) Indexed Site

Types of Lighting in Commercial Buildings - Full Report Types of Lighting in Commercial Buildings - Full Report file:///C|/mydocs/CBECS%20analysis/CBECS%20lighting/lighting_pdf.html[4/28/2009 9:20:44 AM] Introduction Lighting is a major consumer of electricity in commercial buildings and a target for energy savings through use of energy-efficient light sources along with other advanced lighting technologies. The Commercial Buildings Energy Consumption Survey (CBECS) collects information on types of lighting equipment, the amount of floorspace that is lit, and the percentage of floorspace lit by each type. In addition, CBECS data are used to model end-use consumption, including energy consumed for lighting in commercial buildings. CBECS building characteristics data can answer a wide range of questions about lighting from the

416

Chapter 2 - Energy Sources  

Science Journals Connector (OSTI)

Abstract In today’s industrialized world, energy became vital to all human activities including manufacturing, data processing, heating, cooling, lighting, transportation, food processing, etc., yet it is invisible for most of us. Today’s energy generation technologies are undergoing a paradigm shift; the solution to our current dilemma requires more renewable contribution as well as the more efficient utilization of conventional energy sources. Recognizing this importance, this chapter focuses on energy sources and energy generation technologies including, coal, hydroelectric, nuclear, solar, wind, ocean, and several others. Alternative energy technologies received great interest in recent years due to environmental impact, greenhouse gas emissions, national energy security, and increasing cost of fossil fuel-based sources. With particular emphasis on renewable and alternative energy systems, characteristic features of the renewable energy sources have been reviewed. Since power electronics is a key enabling technology for renewable energy utilization, power electronic converters and interfaces that are used for grid interconnection and stand-alone operation have been presented.

Omer C. Onar; Alireza Khaligh

2015-01-01T23:59:59.000Z

417

Indianapolis Power & Light - Residential Energy Incentives Program |  

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

Indianapolis Power & Light - Residential Energy Incentives Program Indianapolis Power & Light - Residential Energy Incentives Program Indianapolis Power & Light - Residential Energy Incentives Program < Back Eligibility Residential Savings Category Heating & Cooling Commercial Heating & Cooling Cooling Heat Pumps Appliances & Electronics Commercial Lighting Lighting Program Info State Indiana Program Type Utility Rebate Program Rebate Amount CFLs: In store discounts A/C Cycling: $20/summer Split System AC: $300 - $400 Air Source Heat Pump: $200 - $300 Home Energy Evaluation and Energy Efficiency Kit: Free Refrigerator/Freezer Recycling: $30/unit Provider IPL Energy Incentives Program The Indianapolis Power and Light Energy Incentives Programs assist residential customers with reducing energy consumption. The program offers

418

Lighting Research Group: Facilities: Spectro-Radiometer  

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

Spectro-Radiometer Spectro-Radiometer Spectro-Radiometer spectro-radiometer Gonio-photometer | Integrating sphere | Power analyzer | Spectro-radiometer The spectro-radiometer is used to measure the light output of a light source at each wavelength. The part that looks like a video camera (to the far right in the picture) can look at each wavelength separately. The spectro-radiometer can also be used as a standard light meter and measure all visible wavelengths at once to obtain the total light output of a source. The console portion of the spectro-radiometer is used to display the meter readings and also to adjust measurement settings like the sensitivity. The computer is interfaced with the spectro-radiometer and is used to send commands to the machine and receive, store, and analyze the data.

419

LED Light Fixture Project FC1 Director's Conference Room: Life Cycle Cost and Break-even Analysis  

E-Print Network [OSTI]

LED Light Fixture Project ­ FC1 Director's Conference Room: Life Cycle Cost and Break-even Analysis sources. One of the emerging lighting technologies that facilities organizations are looking at are LEDs. A light-emitting diode (LED) is a solid-state lighting source that switches on instantly, is readily

Johnston, Daniel

420

COMPETITIVE SOURCING  

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

COMPETITIVE SOURCING COMPETITIVE SOURCING EXECUTIVE STEERING GROUP MEETING PROCEEDINGS June 17, 2002 8:30 am - 11:00 am Room 5E-069 ATTENDEES John Gordon Robert Card Bruce Carnes Kathy Peery Brendan Danaher, AFGE Tony Lane Karen Evans Bill Sylvester Claudia Cross Brian Costlow Laurie Smith Helen Sherman Frank Bessera Rosalie Jordan Dennis O'Brien Mark Hively Robin Mudd Steven Apicella AGENDA 8:30 a.m. - 8:35 a.m. Opening Remarks 8:35a.m. - 8:55 a.m. Executive Steering Group roles and responsibilities, A-76 status, and talking points Team Briefings 8:55 a.m. - 9:20 a.m. Information Technology Study 9:20 a.m. - 9:45 a.m. Financial Services Study

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


421

Development of a high-resolution soft x-ray (30--1500 eV) beamline at the Advanced Light Source and its use for the study of angle-resolved photoemission extended fine structure  

SciTech Connect (OSTI)

ALS Bending magnet beamline 9.3.2 is for high resolution spectroscopy, with circularly polarized light. Fixed included-angle SGM uses three gratings for 30--1500 eV photons; circular polarization is produced by an aperture for selecting the beam above or below the horizontal plane. Photocurrent from upper and lower jaws of entrance slit sets a piezoelectric drive feedback loop on the vertically deflecting mirror for stable beam. End station has a movable platform. With photomeission data from Stanford, structure of c(2{times}2)P/Fe(100) was determined using angle-resolved photoemission extended fine structure (ARPEFS). Multiple-scattering spherical-wave (MSSW) calculations indicate that P atoms adsorb in fourfold hollow sites 1.02A above the first Fe layer. Self-consistent-field X{alpha} scattered wave calculation confirm that the Fe{sub 1}-Fe{sub 2} space is contracted for S/Fe but not for P/Fe; comparison is made to atomic N and O on Fe(100). Final-state effects on ARPEFS curves used literature data from the S 1s and 2p core levels of c(2{times}2)S/Ni(001); a generalized Ramsauer-Townsend splitting is present in the 1s but not 2p data. An approximate method for analyzing ARPEFS data from a non-s initial state using only the higher-{ell} partial wave was tested successfully. ARPEFS data from clean surfaces were collected normal to Ni(111) (3p core levels) and 5{degree} off-normal from Cu(111)(3s, 3p). Fourier transforms (FT) resemble adsorbate systems, showing backscattering signals from atoms up to 4 layers below emitters. 3p FTs show scattering from 6 nearest neighbors in the same crystal layer as the emitters. MSSW calulation indicate that Cu 3p photoemission is mostly d-wave. FTs also indicate double-scattering and single-scattering from laterally distant atoms; calculations indicate that the signal is dominated by photoemission from the first 2 crystal layers.

Huff, W.R.A. [California Univ., Berkeley, CA (United States). Dept. of Chemistry]|[Lawrence Berkeley National Lab., CA (United States)

1996-02-01T23:59:59.000Z

422

Light field and crosshair quality assurance test using a simple lens system  

SciTech Connect (OSTI)

We describe here a simple lens system to test the positioning of the field light source and mylar crosshair for radiation therapy linear accelerators. Ideally the light source for the field light and the crosshair should be centered on the axis of rotation of the collimator. The traditional method for testing this coincidence uses the shadow of the crosshair caused by the field light source. The shadow of the crosshair is dependent on the position of both the field light source and mylar crosshair. Geometrically it is possible for the field light source and the mylar crosshair to be off the axis of rotation of the collimator and still cause the shadow of the crosshair to be on the axis of rotation at some distance. Using a lens system the motion of the field light source and crosshair can be observed in sharp focus independently of one another as the collimator is rotated.

Hadley, Scott W.; Lam, Kwok [Department of Radiation Oncology, University of Michigan, Ann Arbor, Michigan 48109-0010 (United States)

2006-04-15T23:59:59.000Z

423

Over the past decade, lighting became more efficient across all sectors |  

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

Over the past decade, lighting became more efficient across all Over the past decade, lighting became more efficient across all sectors Over the past decade, lighting became more efficient across all sectors May 10, 2012 - 2:54pm Addthis Source: U.S. Energy Information Administration, based on Department of Energy 2010 U.S. Lighting Market Characterization Source: U.S. Energy Information Administration, based on Department of Energy 2010 U.S. Lighting Market Characterization Source: U.S. Energy Information Administration, based on Department of Energy 2010 U.S. Lighting Market Characterization.

424

Advanced Photon Source Industrial Liaison Office | Advanced Photon Source  

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

Industrial Liaison Office Industrial Liaison Office registration page New to Synchrotron Radiation New to the APS Already a User Advanced Photon Source Industrial Liaison Office APS Welcome to the Advanced Photon Source Welcome to the Advanced Photon Source (APS) at Argonne National Laboratory. We are one of five synchrotron radiation light sources operated as national user facilities by the U.S. Department of Energy's Office of Science. The APS is open to everyone who can utilize extremely bright x-ray photon beams for high-value research. This premier national research facility provides these x-ray beams to more than 5,000 scientists from all 50 United States, the District of Columbia, Puerto Rico, and several foreign countries. These scientists come to the APS from industry, universities,

425

NYSEG (Electric) - Small Business Lighting Retrofit Program | Department of  

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

NYSEG (Electric) - Small Business Lighting Retrofit Program NYSEG (Electric) - Small Business Lighting Retrofit Program NYSEG (Electric) - Small Business Lighting Retrofit Program < Back Eligibility Commercial Savings Category Appliances & Electronics Commercial Lighting Lighting Program Info Funding Source System Benefits Charge State New York Program Type Utility Rebate Program Rebate Amount Energy Assessment: Free Lighting Retrofit: 70% of cost Provider RG&E and NYSEG NYSEG offers a lighting incentive program designed to serve small business customers with a demand of 100 kilowatts (kW) or less. These small business customers may schedule a free energy assessment and then receive a 70% discount on the installed cost of recommended lighting measures. Eligible lighting measures include the retrofitting of fluorescent fixtures,

426

Spectrally Enhanced Lighting  

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

November 2007 November 2007 AfterImage + s p a c e 1 Spectrally Enhanced Lighting Spectrally Enhanced Lighting Brian Liebel, PE, LC Brian Liebel, PE, LC November 29, 2007 November 29, 2007 Federal Utilities Partnership Working Group Federal Utilities Partnership Working Group November 29, 2007 November 29, 2007 29 November 2007 AfterImage + s p a c e 2 Spectrally Enhanced Lighting Spectrally Enhanced Lighting Spectrally Enhanced Lighting Spectrally Enhanced Lighting This is not a technology; just a This is not a technology; just a different way to quantify light based on different way to quantify light based on well established scientific findings well established scientific findings Can be used in conjunction with ANY Can be used in conjunction with ANY type of lighting design to gain

427

Light scattering for aerogel characterization  

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

for aerogel characterization for aerogel characterization Title Light scattering for aerogel characterization Publication Type Journal Article Year of Publication 1998 Authors Hunt, Arlon J. Journal Journal of Non-Crystalline Solids Volume 225 Pagination 303-306 Keywords aerogel, light scattering, microstructure Abstract Light scattering is a useful tool to evaluate aerogel clarity, study its structure, pore size, mechanical strain, and examine the modes of sol-gel evolution that determine its microstructure. Ultraviolet-visible transmission spectroscopy can be used to study the wavelength dependent scattering to readily compare aerogels of differing origins, thickness, and to evaluate effects of residual contaminants. Infrared reflectance measurements can be used to determine the effective real and imaginary indices of refraction of porous aerogel materials for material property and radiant heat transfer studies. Measurements of scattering at a fixed angle can be used for quality control, to evaluate sources of scattering, and study inhomogeneities. Measurement of the Mueller matrix (describing the 16-element angle-dependent transformation of intensity and polarization of incident to scattered light) provides information about the anisotropy, large pore fraction, induced stresses, microstructure and inhomogeneities in the aerogel. The time evolution of scattering before and after gel formation gives information.

428

Metacapacitors for LED Lighting: Metacapacitors  

SciTech Connect (OSTI)

ADEPT Project: The CUNY Energy Institute is developing less expensive, more efficient, smaller, and longer-lasting power converters for energy-efficient LED lights. LEDs produce light more efficiently than incandescent lights and last significantly longer than compact fluorescent bulbs, but they require more sophisticated power converter technology, which increases their cost. LEDs need more sophisticated converters because they require a different type of power (low voltage direct current, or DC) than what's generally supplied by power outlets. The CUNY Energy Institute is developing sophisticated power converters for LEDs that contain capacitors made from new, nanoscale materials. Capacitors are electrical components that are used to store energy. CUNY's unique capacitors are configured with advanced power circuits to more efficiently control and convert power to the LED lighting source. They also eliminate the need for large magnetic components, instead relying on networks of capacitors that can be easily printed on plastic substrate. CUNY's prototype LED power converter already meets DOE's 2020 projections for the energy efficiency of LED power converters.

None

2010-09-02T23:59:59.000Z

429

APS Upgrade | Advanced Photon Source  

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

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.

430

Quadrupole Magnetic Center Definition Using the Hall Probe Measurement Technique  

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

Quadrupole Magnetic Center Definition Quadrupole Magnetic Center Definition Using the Hall Probe Measurement Technique Isaac Vasserman Experimental Facility Division, Advanced Photon Source, Argonne National Laboratory 1. Introduction The linac coherent light source [LCLS] project [1] requires 5 µm straightness of the particle beam trajectory to achieve the desired goal of x-ray multiplication. The main source of beam trajectory distortion is misalignment of quadrupoles. The LCLS project will use a beam-based alignment technique to align the quadrupoles to the needed accuracy. An initial accuracy of the quadrupole alignment not worse than 50 µm is required [2]. A different technique could be used for this purpose. It would be though quite desirable to avoid using an additional magnetic measurement technique and to use

431

Energy Savings Estimates of Light Emitting Diodes in Niche Lighting Applications  

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

Savings Estimates of Light Emitting Diodes Savings Estimates of Light Emitting Diodes in Niche Lighting Applications Prepared for: Building Technologies Program Office of Energy Efficiency and Renewable Energy U.S. Department of Energy Prepared by: Navigant Consulting Inc. 1801 K Street, NW Suite 500 Washington DC, 20006 September 2008 * Department of Energy Washington, DC 20585 Energy Savings Estimates of Light Emitting Diodes in Niche Lighting Applications Released: September 2008 Revised: October 2008 This DOE report presents research findings for twelve different niche markets where LEDs are competing or poised to compete with traditional light sources (e.g., incandescent and fluorescent). Estimates of the energy saved due to current levels of LED market penetration as well as estimates of potential energy savings if these markets switched completely to LEDs

432

International lighting in controlled environments workshop: Proceedings  

SciTech Connect (OSTI)

Lighting is a central and critical aspect of control in environmental research for plant research and is gaining recognition as a significant factor to control carefully for animal and human research. Thus this workshop was convened to reevaluate the technology that is available today and to work toward developing guidelines for the most effective use of lighting in controlled environments with emphasis on lighting for plants but also to initiate interest in the development of improved guidelines for human and animal research. There are a number of established guidelines for lighting in human and animal environments. Development of new lighting guidelines is necessary for three reasons: (1) recent scientific discoveries show that in addition to supporting the sensation of vision, light has profound nonvisual biological and behavioral effects in both animals and humans; (2) federal regulations (EPACT 1992) are requiring all indoor environments to become more energy efficient with a specific emphasis on energy conservation in lighting; (3) lighting engineers and manufacturers have developed a wealth of new light sources and lighting products that can be applied in animal and human environments. The workshop was aimed at bringing together plant scientists and physical scientists to interact in the discussions. It involved participation of biological scientists involved in studying mechanisms of light reactions and those involved in utilizing lighting for production of plants and maintenance of animals in controlled environments. It included participation of physical scientists from universities and government involved in research as well as those from industry involved in producing lamps and in construction of controlled growth facilities. Selected papers are indexed separately for inclusion in the Energy Science and Technology Database.

NONE

1994-12-31T23:59:59.000Z

433

Public Street Lights Increase House Infestation by the Chagas Disease Vector Triatoma dimidiata  

E-Print Network [OSTI]

Public Street Lights Increase House Infestation by the Chagas Disease Vector Triatoma dimidiata houses were significantly closer to public street light sources than non-infested houses (18.060.6 vs 22.660.4 m), and street lights rather than domestic lights were associated with house infestation

Boyer, Edmond

434

Light extinction in the atmosphere  

SciTech Connect (OSTI)

Atmospheric aerosol particles originating from natural sources, such as volcanos and sulfur-bearing gas emissions from the oceans, and from human sources, such as sulfur emissions from fossil fuel combustion and biomass burning, strongly affect visual air quality and are suspected to significantly affect radiative climate forcing of the planet. During the daytime, aerosols obscure scenic vistas, while at night they diminish our ability to observe stellar objects. Scattering of light is the main means by which aerosols attenuate and redistribute light in the atmosphere and by which aerosols can alter and reduce visibility and potentially modify the energy balance of the planet. Trends and seasonal variability of atmospheric aerosol loading, such as column-integrated light extinction or optical depth, and how they may affect potential climate change have been difficult to quantify because there have been few observations made of important aerosol optical parameters, such as optical depth, over the globe and over time and often these are of uneven quality. To address questions related to possible climate change, there is a pressing need to acquire more high-quality aerosol optical depth data. Extensive deployment of improved solar radiometers over the next few years will provide higher-quality extinction data over a wider variety of locations worldwide. An often overlooked source of turbidity data, however, is available from astronomical observations, particularly stellar photoelectric photometry observations. With the exception of the Project ASTRA articles published almost 20 years ago, few of these data ever appear in the published literature. This paper will review the current status of atmospheric extinction observations, as highlighted by the ASTRA work and augmented by more recent solar radiometry measurements.

Laulainen, N.

1992-06-01T23:59:59.000Z

435

High-brightness electron beam evolution following laser-based cleaning of a photocathode  

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

Laser-based techniques have been widely used for cleaning metal photocathodes to increase quantum efficiency (QE). However, the impact of laser cleaning on cathode uniformity and thereby on electron beam quality are less understood. We are evaluating whether this technique can be applied to revive photocathodes used for high-brightness electron sources in advanced x-ray free-electron laser (FEL) facilities, such as the Linac Coherent Light Source (LCLS) at the SLAC National Accelerator Laboratory. The laser-based cleaning was applied to two separate areas of the current LCLS photocathode on July 4 and July 26, 2011, respectively. The QE was increased by 8–10 times upon the laser cleaning. Since the cleaning, routine operation has exhibited a slow evolution of the QE improvement and comparatively rapid improvement of transverse emittance, with a factor of 3 QE enhancement over five months, and a significant emittance improvement over the initial 2–3 weeks following the cleaning. Currently, the QE of the LCLS photocathode is holding constant at about 1.2×10?4 , with a normalized injector emittance of about 0.3???m for a 150-pC bunch charge. With the proper procedures, the laser-cleaning technique appears to be a viable tool to revive the LCLS photocathode. We present observations and analyses for the QE and emittance evolution in time following the laser-based cleaning of the LCLS photocathode, and comparison to the previous studies, the measured thermal emittance versus the QE and comparison to the theoretical model.

Zhou, F.; Brachmann, A.; Decker, F-J.; Emma, P.; Gilevich, S.; Iverson, R.; Stefan, P.; Turner, J.

2012-09-01T23:59:59.000Z

436

Solid-State Lighting: Solid-State Lighting  

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

Solid-State Lighting Search Solid-State Lighting Search Search Help Solid-State Lighting HOME ABOUT THE PROGRAM R&D PROJECTS MARKET-BASED PROGRAMS SSL BASICS INFORMATION RESOURCES FINANCIAL OPPORTUNITIES EERE » Building Technologies Office » Solid-State Lighting Printable Version Share this resource Send a link to Solid-State Lighting: Solid-State Lighting to someone by E-mail Share Solid-State Lighting: Solid-State Lighting on Facebook Tweet about Solid-State Lighting: Solid-State Lighting on Twitter Bookmark Solid-State Lighting: Solid-State Lighting on Google Bookmark Solid-State Lighting: Solid-State Lighting on Delicious Rank Solid-State Lighting: Solid-State Lighting on Digg Find More places to share Solid-State Lighting: Solid-State Lighting on AddThis.com... Pause/Resume Photo of a large room with people standing around poster boards.

437

Smart street lighting management  

Science Journals Connector (OSTI)

In this work, we propose a new street lighting energy management system in order to reduce ... demand” meaning that energy, in this case light, is provided only when needed. In ... demand model, which in the case...

S. Pizzuti; M. Annunziato; F. Moretti

2013-08-01T23:59:59.000Z

438

Adaptive Street Lighting Controls  

Broader source: Energy.gov [DOE]

This two-part DOE Municipal Solid-State Street Lighting Consortium webinar focused on LED street lighting equipped with adaptive control components. In Part I, presenters Amy Olay of the City of...

439

Kyler Nelson Light Timer  

E-Print Network [OSTI]

designated by the user, the Arduino board will dim the light to save energy. The user designates the time instance, the light is dimmed using pulse width modulation (PWM) in the Arduino's pin number 11

Kachroo, Pushkin

440

COMPETITIVE SOURCING  

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

EXECUTIVE STEERING GROUP Meeting Proceedings October 30, 2002 Room 6E-069, 10:30 - 12:00 Agenda Opening Remarks Bruce Carnes Competitive Sourcing Update Denny O'Brien Team Briefings Team Leads ESG Discussion/Wrap up Bruce Carnes Attendees Bruce Carnes, Acting Chair MaryAnn Shebek Robert Card Prentis Cook Ambassador Brooks Tony Lane Kyle McSlarrow Karen Evans Suzanne Brennan, NTEU Claudia Cross Brian Costlow Helen Sherman Frank Bessera Laurie Morman Denny O'Brien Travis McCrory Bill Pearce Jeff Dowl Mark Hively Steven Apicella Robin Mudd Bruce Carnes chaired the meeting and began with welcoming NTEU to the meeting. In regard to the OMB's Balanced Scorecard, the Department has achieved a Green on progress and we are close to achieving a yellow on status.

Note: This page contains sample records for the topic "light source lcls" 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

Street light holography  

Science Journals Connector (OSTI)

The production of a hologram is demonstrated using only a camera aluminum foil and a mercury vapor street light.

R. R. Turtle

1977-01-01T23:59:59.000Z

442

Outdoor Lighting Resources  

Broader source: Energy.gov [DOE]

DOE offers a variety of resources to guide municipalities, utilities, and others in their evaluation of LED street lighting products.

443

Multi-Wavelength Visible Light Communication System Design Pankil Butala 1a  

E-Print Network [OSTI]

-converted light emitting diodes, or by filtering to iso- late the blue component from these sources. Multi efficient illumination devices called light emitting diodes (LED). The intensity of radiant flux emitted

Little, Thomas

444

Micro- and Sub-nanosecond Lifetime Measurements Using a UV Light-Emitting Diode  

Science Journals Connector (OSTI)

The authors describe the use of an ultraviolet light-emitting diode (UV LED), Nichia NSHU590E, as a 373 nm excitation light source for fluorescence lifetime measurements. A...

Szmacinski, Henryk; Chang, Qing

2000-01-01T23:59:59.000Z

445

Designing light-emitting diode arrays for uniform near-field irradiance  

Science Journals Connector (OSTI)

We analyze the first-order design of light sources consisting of multiple light-emitting diodes (LEDs) to uniformly illuminate a near target plane by considering each single LED as...

Moreno, Ivan; Avendańo-Alejo, Maximino; Tzonchev, Rumen I

2006-01-01T23:59:59.000Z

446

Photodynamic inactivation of Candida albicans mediated by a low density of light energy  

Science Journals Connector (OSTI)

Shorter times and lower energies of application of light sources are desirable to use photodynamic antimicrobial ... of candidiasis, especially among babies and children. Light energies ranging from 39.5 to 100 J...

Gabriel Salles Barbério; Soraia Veloso da Costa…

2014-05-01T23:59:59.000Z

447

Fiber optic probe for light scattering measurements  

DOE Patents [OSTI]

This invention is comprised of a fiber optic probe and a method for using the probe for light scattering analyses of a sample. The probe includes a probe body with an inlet for admitting a sample into an interior sample chamber, a first optical fiber for transmitting light from a source into the chamber, and a second optical fiber for transmitting light to a detector such as a spectrophotometer. The interior surface of the probe carries a coating that substantially prevents non-scattered light from reaching the second fiber. The probe is placed in a region where the presence and concentration of an analyte of interest are to be detected, and a sample is admitted into the chamber. Exciting light is transmitted into the sample chamber by the first fiber, where the light interacts with the sample to produce Raman-scattered light. At least some of the Raman- scattered light is received by the second fiber and transmitted to the detector for analysis. Two Raman spectra are measured, at different pressures. The first spectrum is subtracted from the second to remove background effects, and the resulting sample Raman spectrum is compared to a set of stored library spectra to determine the presence and concentration of the analyte.

Nave, S.E.; Livingston, R.R.; Prather, W.S.

1993-01-01T23:59:59.000Z

448

Fiber optic probe for light scattering measurements  

DOE Patents [OSTI]

A fiber optic probe and a method for using the probe for light scattering analyses of a sample. The probe includes a probe body with an inlet for admitting a sample into an interior sample chamber, a first optical fiber for transmitting light from a source into the chamber, and a second optical fiber for transmitting light to a detector such as a spectrophotometer. The interior surface of the probe carries a coating that substantially prevents non-scattered light from reaching the second fiber. The probe is placed in a region where the presence and concentration of an analyte of interest are to be detected, and a sample is admitted into the chamber. Exciting light is transmitted into the sample chamber by the first fiber, where the light interacts with the sample to produce Raman-scattered light. At least some of the Raman-scattered light is received by the second fiber and transmitted to the detector for analysis. Two Raman spectra are measured, at different pressures. The first spectrum is subtracted from the second to remove background effects, and the resulting sample Raman spectrum is compared to a set of stored library spectra to determine the presence and concentration of the analyte.

Nave, Stanley E. (Evans, GA); Livingston, Ronald R. (Aiken, SC); Prather, William S. (Augusta, GA)

1995-01-01T23:59:59.000Z

449

Light emitting device comprising phosphorescent materials for white light generation  

DOE Patents [OSTI]

The present invention relates to phosphors for energy downconversion of high energy light to generate a broadband light spectrum, which emit light of different emission wavelengths.

Thompson, Mark E.; Dapkus, P. Daniel

2014-07-22T23:59:59.000Z

450

Resonant energy transfer in light harvesting and light emitting applications.  

E-Print Network [OSTI]

??The performance of light emitting and light harvesting devices is improved by utilising resonant energy transfer. In lighting applications, the emission energy of a semiconductor… (more)

Chanyawadee, Soontorn

2009-01-01T23:59:59.000Z

451

Alliant Energy Interstate Power and Light (Electric) - Residential Energy  

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

Alliant Energy Interstate Power and Light (Electric) - Residential Alliant Energy Interstate Power and Light (Electric) - Residential Energy Efficiency Rebate Program (Iowa) Alliant Energy Interstate Power and Light (Electric) - Residential Energy Efficiency Rebate Program (Iowa) < Back Eligibility Multi-Family Residential Residential Savings Category Home Weatherization Commercial Weatherization Heating & Cooling Cooling Commercial Heating & Cooling Appliances & Electronics Other Heat Pumps Commercial Lighting Lighting Water Heating Windows, Doors, & Skylights Program Info State Iowa Program Type Utility Rebate Program Rebate Amount Central Air Conditioners: $100 - $200 Air Source Heat Pumps: $100 - $400 Geothermal Heat Pumps: $300/ton + $50/EER/ton Fan Motors: $50/unit Programmable Thermostats: $25 Tank Water Heater: $50

452

Dayton Power and Light - Residential Energy Efficiency Rebate Program |  

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

Dayton Power and Light - Residential Energy Efficiency Rebate Dayton Power and Light - Residential Energy Efficiency Rebate Program Dayton Power and Light - Residential Energy Efficiency Rebate Program < Back Eligibility Residential Savings Category Heating & Cooling Commercial Heating & Cooling Cooling Heat Pumps Appliances & Electronics Commercial Lighting Lighting Program Info State Ohio Program Type Utility Rebate Program Rebate Amount Refrigerator Recycling: $25 Freezer Recycling: $25 HVAC Tune-Up: $25 credit CFL's: $1.40 average off of each bulb purchased at participating stores Air Conditioning: $100 - $300, varies by efficiency and equipment application Air Source Heat Pump: $200 - $600, varies by efficiency and equipment application Geothermal Heat Pump: $200 - $600, varies by efficiency and equipment

453

Light energy conversion in Halobacterium halobium.  

Science Journals Connector (OSTI)

...function for lightJ/dark adaptation has...132-134) energy-transducing...other means in the dark. In the envelope...ment of ATP in energy coupling is miniimal...this time. A survey of maximal transport...arranged in the dark by appro- priately...other sources of energy, it has been...

J K Lanyi

1978-12-01T23:59:59.000Z

454

The Speed-of-Light Catastrophe  

Science Journals Connector (OSTI)

...July 1989 research-article The Speed-of-Light Catastrophe H. Ardavan It is shown...coordinates, c is the propagation speed of the waves described by the retarded...source moving on a curved path whose speed is in parts smaller and in parts...

1989-01-01T23:59:59.000Z

455

Solid-State Lighting: Solid-State Lighting Videos  

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

Solid-State Lighting Videos to Solid-State Lighting Videos to someone by E-mail Share Solid-State Lighting: Solid-State Lighting Videos on Facebook Tweet about Solid-State Lighting: Solid-State Lighting Videos on Twitter Bookmark Solid-State Lighting: Solid-State Lighting Videos on Google Bookmark Solid-State Lighting: Solid-State Lighting Videos on Delicious Rank Solid-State Lighting: Solid-State Lighting Videos on Digg Find More places to share Solid-State Lighting: Solid-State Lighting Videos on AddThis.com... Conferences & Meetings Presentations Publications Webcasts Videos Tools Solid-State Lighting Videos On this page you can access DOE Solid-State Lighting (SSL) Program videos. Photo of a museum art gallery with LED lights in track fixtures overhead. The City of Los Angeles LED Streetlight Program

456

Solid-State Lighting: Solid-State Lighting  

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

Lighting Lighting Printable Version Share this resource Send a link to Solid-State Lighting: Solid-State Lighting to someone by E-mail Share Solid-State Lighting: Solid-State Lighting on Facebook Tweet about Solid-State Lighting: Solid-State Lighting on Twitter Bookmark Solid-State Lighting: Solid-State Lighting on Google Bookmark Solid-State Lighting: Solid-State Lighting on Delicious Rank Solid-State Lighting: Solid-State Lighting on Digg Find More places to share Solid-State Lighting: Solid-State Lighting on AddThis.com... Pause/Resume Photo of a large room with people standing around poster boards. Register Now for DOE's 11th Annual SSL R&D Workshop January 28-30, join other SSL R&D professionals from industry, government, and academia to learn, share, and shape the future of lighting.

457

Solid-State Lighting: Solid-State Lighting Contacts  

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

About the About the Program Printable Version Share this resource Send a link to Solid-State Lighting: Solid-State Lighting Contacts to someone by E-mail Share Solid-State Lighting: Solid-State Lighting Contacts on Facebook Tweet about Solid-State Lighting: Solid-State Lighting Contacts on Twitter Bookmark Solid-State Lighting: Solid-State Lighting Contacts on Google Bookmark Solid-State Lighting: Solid-State Lighting Contacts on Delicious Rank Solid-State Lighting: Solid-State Lighting Contacts on Digg Find More places to share Solid-State Lighting: Solid-State Lighting Contacts on AddThis.com... Contacts Partnerships Solid-State Lighting Contacts For information about Solid-State Lighting, contact James Brodrick Lighting Program Manager Building Technologies Office U.S. Department of Energy

458

Solid-State Lighting: Adaptive Street Lighting Controls  

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

Adaptive Street Lighting Adaptive Street Lighting Controls to someone by E-mail Share Solid-State Lighting: Adaptive Street Lighting Controls on Facebook Tweet about Solid-State Lighting: Adaptive Street Lighting Controls on Twitter Bookmark Solid-State Lighting: Adaptive Street Lighting Controls on Google Bookmark Solid-State Lighting: Adaptive Street Lighting Controls on Delicious Rank Solid-State Lighting: Adaptive Street Lighting Controls on Digg Find More places to share Solid-State Lighting: Adaptive Street Lighting Controls on AddThis.com... Conferences & Meetings Presentations Publications Webcasts Videos Tools Adaptive Street Lighting Controls This two-part DOE Municipal Solid-State Street Lighting Consortium webinar focused on LED street lighting equipped with adaptive control components.

459

Control of light speed: From slow light to superluminal light  

E-Print Network [OSTI]

A scheme for controlling light speed from slower-than-c to faster-than-c in an atomic system is presented in this paper. The scheme is based on far detuning Raman effect. Two far detuning coupling fields with small frequency difference will produce two absorptive peaks for the probe field in a $\\Lambda$ structure, and an optical pump between the two ground states can change the absorptive peaks into enhanced peaks, which makes the normal dispersion between the two peaks change into anomalous dispersion, so the probe field can change from slow light to superluminal propagation.

Qun-Feng Chen; Yong-Sheng Zhang; Bao-Sen Shi; Guang-Can Guo

2008-07-01T23:59:59.000Z

460

City Water Light and Power - Commercial Energy Efficiency Rebate Programs |  

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

Water Light and Power - Commercial Energy Efficiency Rebate Water Light and Power - Commercial Energy Efficiency Rebate Programs City Water Light and Power - Commercial Energy Efficiency Rebate Programs < Back Eligibility Commercial Nonprofit Savings Category Home Weatherization Commercial Weatherization Heating & Cooling Commercial Heating & Cooling Heat Pumps Appliances & Electronics Commercial Lighting Lighting Maximum Rebate Insulation: $3,000 Retro-Commissioning: $50,000 Lighting: $15,000 Program Info State Illinois Program Type Utility Rebate Program Rebate Amount Air-Source Heat Pumps: $300/ton Geothermal Heat Pump: $500/ton Insulation: 30% Retro-Commissioning Study: $0.30 per sq. ft. of conditioned space Retro-Commissioning EMC: varies Lighting: $3 - $35/unit Lighting (Custom): $0.28/Watt reduced Water Loop Heat Pump: Contact CWLP

Note: This page contains sample records for the topic "light source lcls" 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

New and Underutilized Technology: High Bay LED Lighting | Department of  

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

High Bay LED Lighting High Bay LED Lighting New and Underutilized Technology: High Bay LED Lighting October 7, 2013 - 8:55am Addthis The following information outlines key deployment considerations for high bay LED lighting within the Federal sector. Benefits LED light sources offer several potential benefits compared to metal halide or fluorescent lighting, including reduced energy consumption due to the ability to provide a more precise light distribution; longer operating life and lower maintenance requirements; less heat introduced into the space; and greater controllability for dimming and on/off control. Relevant to the cold storage application, LED performance improves in colder temperatures. Application High bay LED lighting is applicable for facilities containing high bay

462

CoServ Electric Cooperative - Commercial Energy Efficient Lighting Rebate  

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

CoServ Electric Cooperative - Commercial Energy Efficient Lighting CoServ Electric Cooperative - Commercial Energy Efficient Lighting Rebate Program CoServ Electric Cooperative - Commercial Energy Efficient Lighting Rebate Program < Back Eligibility Commercial Industrial Savings Category Appliances & Electronics Commercial Lighting Lighting Program Info Funding Source Via partnership with whole sale provider Brazos Electric Power, Inc. and escheat funds Start Date 09/01/2009 State Texas Program Type Utility Rebate Program Rebate Amount Custom Lighting Upgrade: 0.30/watt saved per fixture T8 Fluorescent Upgrade: 1.50 - 2.25/bulb per fixture Provider CoServ Electric Cooperative CoServ Electric Cooperative provides rebates for commercial and industrial customers who upgrade to high efficiency lighting for the workplace. A rebate of $0.30/watt saved is available on custom lighting upgrades and a

463

California | Department of Energy  

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

June 22, 2012 June 22, 2012 This rendering shows a lysozyme structural model against its X-ray diffraction pattern from SLAC's Linac Coherent Light Source (LCLS), a powerful X-ray laser facility. Researchers have achieved high-resolution images of these simple biomolecules using advanced crystallography at LCLS. | Photo by Anton Barty/DESY Cracking Molecular Structures with Bright Lights - and a Few Good Eggs How scientists are cracking a few new protein structures thanks to a successful experimental coup by researchers at the SLAC. June 20, 2012 The Story of a Cutting-Edge Solar Startup Alta Devices is rethinking how low cost, high performance solar cells are made. June 19, 2012 EIS-0431: Amended Notice of Intent to Prepare an Environmental Impact Statement and Notice of Potential Floodplain and Wetland Involvement

464

Recent News from the National Labs | Department of Energy  

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

25, 2012 25, 2012 A view of one of the aisles of racks that hold Sequoia's 1.6 million cores. Its 16.32 sustained petaflops and 1.6 petabytes of memory make it the world's fastest supercomputer. | Photo courtesy of Lawrence Livermore National Laboratory. Sequoia Ranked as Fastest Supercomputer in the World With 1.6 million cores and 1.6 petabytes of memory, Sequoia takes the title for the fastest supercomputer on the planet. June 22, 2012 This rendering shows a lysozyme structural model against its X-ray diffraction pattern from SLAC's Linac Coherent Light Source (LCLS), a powerful X-ray laser facility. Researchers have achieved high-resolution images of these simple biomolecules using advanced crystallography at LCLS. | Photo by Anton Barty/DESY Cracking Molecular Structures with Bright Lights - and a Few Good Eggs

465

The World's First Free-Electron X-ray Laser | Department of Energy  

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

First Free-Electron X-ray Laser First Free-Electron X-ray Laser The World's First Free-Electron X-ray Laser August 17, 2010 - 6:19pm Addthis The World's First Free-Electron X-ray Laser John Schueler John Schueler Former New Media Specialist, Office of Public Affairs Yesterday, Secretary Chu participated in the dedication of the world's first free-electron and most powerful X-ray laser, the Linac Coherent Light Source (LCLS). In light of this occasion (pun intended), we posted an in-depth look at the innovative nature of this new instrument and its potential to tackle some of life's biggest mysteries. The Secretary seemed just as geeked about the possibilities of the LCLS, stating that "this is a new instrument that will enable us to see the structure of materials that we could not determine by any other means ... Knowing those

466

Scientists produce transparent, light-harvesting material  

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

Transparent, light-harvesting material Transparent, light-harvesting material Scientists produce transparent, light-harvesting material The material could be used in development of transparent solar panels. November 3, 2010 Los Alamos National Laboratory sits on top of a once-remote mesa in northern New Mexico with the Jemez mountains as a backdrop to research and innovation covering multi-disciplines from bioscience, sustainable energy sources, to plasma physics and new materials. Los Alamos National Laboratory sits on top of a once-remote mesa in northern New Mexico with the Jemez mountains as a backdrop to research and innovation covering multi-disciplines from bioscience, sustainable energy sources, to plasma physics and new materials. Contact James E. Rickman Communications Office (505) 665-9203

467

Radiation source  

DOE Patents [OSTI]

A device and method for relativistic electron beam heating of a high-density plasma in a small localized region. A relativistic electron beam generator or accelerator produces a high-voltage electron beam which propagates along a vacuum drift tube and is modulated to initiate electron bunching within the beam. The beam is then directed through a low-density gas chamber which provides isolation between the vacuum modulator and the relativistic electron beam target. The relativistic beam is then applied to a high-density target plasma which typically comprises DT, DD, or similar thermonuclear gas at a density of 10.sup.17 to 10.sup.20 electrons per cubic centimeter. The target gas is ionized prior to application of the relativistic electron beam by means of a laser or other preionization source to form a plasma. Utilizing a relativistic electron beam with an individual particle energy exceeding 3 MeV, classical scattering by relativistic electrons passing through isolation foils is negligible. As a result, relativistic streaming instabilities are initiated within the high-density target plasma causing the relativistic electron beam to efficiently deposit its energy into a small localized region of the high-density plasma target.

Thode, Lester E. (Los Alamos, NM)

1981-01-01T23:59:59.000Z

468

Emerging Lighting Technology  

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

Emerging Lighting Technology Emerging Lighting Technology Bruce Kinzey Pacific Northwest National Laboratory FUPWG - Portland, OR April 20, 2011 www.ssl.energy.gov 2 | Solid-State Lighting Program GATEWAY Demonstration Program * Purpose: demonstrate new SSL products in real-world applications that save energy, match or improve illumination, and are cost- effective * Demos generate critical field experience providing: - Feedback to manufacturers - Data for utility incentives - Market readiness of specific applications to users - Advancement in lighting knowledge Central Park, NY Photo: Ryan Pyle Smithsonian American Art Museum, Washington, D.C. Photo: Scott Rosenfeld www.ssl.energy.gov 3 | Solid-State Lighting Program LED Product Explosion www.ssl.energy.gov 4 | Solid-State Lighting Program LEDs are Not a Universal Lighting

469

Emission Control Strategy for Downsized Light-Duty Diesels |...  

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

p-18neely.pdf More Documents & Publications New Diesel Emissions Control Strategy for U.S. Tier 2 Light-Duty Diesel Market Potential in North America EPA Mobile Source Rule Update...

470

Light-emitting diode illumination design with a condensing sphere  

Science Journals Connector (OSTI)

An illumination system is described that comprises a glass or plastic sphere, an embedded light-emitting diode (LED) source, and a reflecting or scattering mirror. The rays from the...

Chi, Wanli; George, Nicholas

2006-01-01T23:59:59.000Z

471

Energy saving in lighting system with fuzzy logic controller which uses light-pipe and dimmable ballast  

Science Journals Connector (OSTI)

Approximately, 20% of the electricity consumed in the world is spent for lighting. More efficient utilization of the sun, as a natural source of light, for lighting would save electricity used for lighting. The aim of this study is to illuminate a windowless room via a light-pipe and dimmable electronic ballasts. Light-pipe is used for the illumination of the space during the daytime. In case of inadequate daylight, artificial lighting is made via dimmable electronic ballasts and fluorescence lamps. Artificial lighting is supervised by a fuzzy logic control system to keep the illumination level at 350 lux. When there is a motion in the room, the system works with the message of the motion sensor, which, thereby, enables energy saving. Additionally, dimming the lamps result in conversation of the electrical energy used for illumination. After the experimental studies, 350 lux value targeted in the work plane is achieved with ±10 lux error.

Sertaç Görgülü; Nazmi Ekren

2013-01-01T23:59:59.000Z

472

SMART LIGHTING SYSTEMS ULTIMATE LIGHTING The Smart Lighting  

E-Print Network [OSTI]

Integration (Holistic Integrated Design) · Sensors as important as LEDs · Interconnected systems (human, building, grid) · Artistic Design Freedom · Lighting is Health, Entertainment, Information and Illumination Cost at any brightness · Chip level integrated electronics THE ERC RESEARCH COVERS THE ENTIRE SUPPLY

Linhardt, Robert J.

473

Solid-State Lighting: Solid-State Lighting Manufacturing Workshop  

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

Solid-State Lighting Solid-State Lighting Manufacturing Workshop to someone by E-mail Share Solid-State Lighting: Solid-State Lighting Manufacturing Workshop on Facebook Tweet about Solid-State Lighting: Solid-State Lighting Manufacturing Workshop on Twitter Bookmark Solid-State Lighting: Solid-State Lighting Manufacturing Workshop on Google Bookmark Solid-State Lighting: Solid-State Lighting Manufacturing Workshop on Delicious Rank Solid-State Lighting: Solid-State Lighting Manufacturing Workshop on Digg Find More places to share Solid-State Lighting: Solid-State Lighting Manufacturing Workshop on AddThis.com... Conferences & Meetings Past Conferences Presentations Publications Webcasts Videos Tools Solid-State Lighting Manufacturing Workshop Nearly 200 lighting industry leaders, chip makers, fixture and component

474

SPEAR3 | A Brighter Source at SSRL  

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

Pat Dehmer's Talk: Pat Dehmer's Talk: Almost precisely se ven years ago, the Office of Basic Energy Sciences commissioned the first review of its four light sources. The review was headed by Bob Birgeneau, who was then the Dean of Science at MIT. The committee members were among the most distinguished researchers in the country. However, very deliberately, only a fraction of them knew about the light sources. Some of the others were skeptics. A few were hostile, primari ly because of the large budgets associated with construction and operation of the light sources. We asked this committee ten questions. The first question, the most important question, was: "What has been the scientific impact of synchrotron radiation based research during the past decade, and what is it expected to be during the next decade?"

475

Laser Light Engines | Open Energy Information  

Open Energy Info (EERE)

Laser Light Engines Laser Light Engines Jump to: navigation, search Name Laser Light Engines Place Salem, New Hampshire Zip NH 03079 Sector Efficiency Product Salem-based, designs, develops and manufactures ultra-high brightness, digitally controlled laser-driven light sources. The firm contributes to green building efficiency. Coordinates 42.554485°, -88.110549° 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":42.554485,"lon":-88.110549,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

476

A spectrally programmable light engine for in vitro or in vivo molecular imaging and spectroscopy  

Science Journals Connector (OSTI)

Spectrally and temporally programmable light source can be used in a wide range of medical photonics instruments in spectroscopy, microscopy and endoscopy and can create any desired...

MacKinnon, Nicholas B; Quatrevalet, Matthieu; Lane, Pierre; Stange, Ulrich; MacAulay, Calum

477

Microlens array light trapping in CdTe/CdS solar cells .  

E-Print Network [OSTI]

??"In light of the continued rise in fossil fuel costs, alternative energy sources, such as solar technology, are increasingly important. Concentrating photovoltaic systems are promising… (more)

Margavio, Patrick (Patrick Michael)

2012-01-01T23:59:59.000Z

478

Lighting the Night: Technology, Urban Life and the Evolution of Street Lighting [Light in Place  

E-Print Network [OSTI]

May 1912), 783. 8. "New Street Lights Increase Trade 3 5 Perlight, including street light, became part of America'sBeautiful-inspired street­ lights graced wealthy residen­

Holden, Alfred

1992-01-01T23:59:59.000Z

479

Photon Sciences | Operating the National Synchrotron Light Source,  

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

Transition Topics Transition Topics The Photon Sciences Directorate intends to run a full schedule (~5000 hours per year) of NSLS operations to the end of fiscal year 2014 (September 30, 2014). NSLS-II will be ramped up as rapidly as possible to serve our large and productive user community. The tabs below provide information related to various transition topics. If you have comments, suggestions or questions, please contact the Photon Sciences User Administrator, at gcisco@bnl.gov. News & Updates FAQs Techniques Across DOE DOE Partner Facilities Contact Us User Transition Forum, May 2012 The User Transition Planning Forum was held on May 21, 2012, as part of the annual NSLS/CFN Users' Meeting. Below are copies of slide presentations and notes taken during the Forum. Johnson Presentation

480

NSLS II: The Future National Synchrotron Light Source  

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

Planning for Life Sciences at NSLS-II: A Chronology Planning for Life Sciences at NSLS-II: A Chronology Since 2007, through workshops, trips to Washington, white papers, and other activities, NSLS-II planners have been steadily mapping out what promises to be a rich life sciences research program at the new facility. July 17-18, 2007 - Brookhaven Lab hosts the first NSLS-II user workshop, which was attended by over 450 participants, including many members of the life sciences user community and representatives from the National Institutes of Health (NIH) and the Department of Energy's (DOE) Office of Biological and Environmental Research (BER). January 15-16, 2008 - A scientific strategic planning workshop at Brookhaven Lab marked the beginning of plans for life sciences research and beamlines at NSLS-II. The goal of this workshop was to generate a detailed white paper that presented a vision of Life Sciences research, beamlines, and facilities at NSLS-II and describes the path forward and timeline toward achieving this goal.

Note: This page contains sample records for the topic "light source lcls" 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.


481

NSLS II: The Future National Synchrotron Light Source | 2010 Beamline  

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

2010 Beamline Development Proposals - Approved Proposals 2010 Beamline Development Proposals - Approved Proposals Proposal Results Announcement Acronym Title Spokesperson Type Information 4DE 4-Dimensional Studies in Extreme Environments Donald J. Weidner, Stony Brook University 1 Slide ABS A Highly Automated Instrument for Static X-ray Scattering Measurements of Biological Molecules in Solution Lin Yang, BNL 1 Slide AIM Advanced Infrared Microspectroscopy Lisa Miller, BNL 1 Slide AMX Flexible Access Macromolecular Crystallography at an Undulator Beamline Dieter Schneider, BNL 1 Slide | Proposal BMM Hard X-ray Absorption Spectroscopy and Diffraction - Beamline for Materials Measurements Daniel Fischer, NIST 2 Slide | Proposal CDI Coherent X-ray Diffraction Ian Robinson, University College London 1 Slide | Proposal

482

Photon Sciences | Operating the National Synchrotron Light Source,  

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

Accessing NSLS Accessing NSLS NSLS strongly advises industrial users to first consult with the Industrial Program Coordinator, Jun Wang (junwang@bnl.gov or 631-344-2661), before beginning the beam time application process. She will discuss your proposed research with you, guiding you to the most appropriate beamline and synchrotron research technique. From there, you will be contacted by the beamline staff at your target beamline. They will work with you to develop the best possible beam time proposal, which you will need to formally apply for beam time. For new users, it is often beneficial to start your NSLS experience by collaborating with seasoned users. Dr. Wang can help establish these collaborations. Whether you decide to consult with the Industrial Program Coordinator or

483