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High Brightness Electron Beam Studies At The Nsls Sdl
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Book Synopsis High Brightness Electron Beam Studies at the NSLS SDL. by :
Download or read book High Brightness Electron Beam Studies at the NSLS SDL. written by and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Experimental optimization of electron beam brightness at the NSLS SDL is reported in this paper. Using a high quantum efficiency (QE) Mg metal cathode and the S-band BNL-type RF gun, we have systematically studied electron beams transverse and longitudinal emittance. The measured thermal emittance for the Mg cathode is 0.85±0.04 mm-mrad/mm, which contradicts the current thermal emittance model. For a 50 pC beam, measured normalized transverse and longitudinal RMS emittance are 0.6 mm-mrd and 5.2 ps-keV, respectively. The smallest projected transverse emittance observed for a 20 pC charge is 0.15 ± 0.02 mm-mrad.
Book Synopsis At the Cutting Edge of Bright Beams by :
Download or read book At the Cutting Edge of Bright Beams written by and published by . This book was released on 2008 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Inspired by the discoveries with synchrotron light at the National Synchrotron Light Source (NSLS) and similar facilities around the world, researchers are looking for more brilliant beams of light. To develop this next-generation of light sources, accelerator physicists at the NSLS Source Development Laboratory (SDL) make use of a magnesium photocathode irradiated by ultraviolet laser light to produce electron beams of unprecedented brightness. As Murphy will describe in his talk, he and fellow researchers have developed various techniques to catch molecules and atoms in action. In one recent study, the researchers used a laser to control the pulse duration of light from a free-electron laser (FEL), a type of light source with a potential peak brightness up to one billion times higher than that of ordinary synchrotron light. In another technique, Murphy and his colleagues generated extremely short pulses of terahertz radiation that are the highest intensity of their type ever produced.
Author :Brookhaven National Laboratory. National Synchrotron Light Source Publisher : ISBN 13 : Total Pages :244 pages Book Rating :4.:/5 (89 download)
Book Synopsis Activity report by : Brookhaven National Laboratory. National Synchrotron Light Source
Download or read book Activity report written by Brookhaven National Laboratory. National Synchrotron Light Source and published by . This book was released on 2006 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis NSLS Source Development Laboratory by :
Download or read book NSLS Source Development Laboratory written by and published by . This book was released on 1995 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: The National Synchrotron Light Source (NSLS) has initiated an ambitious project to develop fourth generation radiation sources. To achieve this goal, the Source Development Laboratory (SDL) builds on the experience gained at the NSLS, and at the highly successful BNL Accelerator Test Facility. The SDL accelerator system will consist of a high brightness short pulse linac, a station for coherent synchrotron and transition radiation experiments, a short bunch storage ring, and an ultra-violet free electron laser utilizing the NISUS wiggler. The electrons will be provided by a laser photocathode gun feeding a 210 MeV S-band electron linac, with magnetic bunch compression at 80 MeV. Electron bunches as short as 100 [mu]m with 1 nC charge will be used for pump-probe experiments utilizing coherent transition radiation. Beam will also be injected into a compact storage ring which will be a source of millimeter wave coherent synchrotron radiation. The linac will also serve as the driver for an FEL designed to allow the study of various aspects of single pass amplifiers. The first FEL configuration will be as a self-amplified spontaneous emission (SASE) FEL at 900 nm. Seeded beam and sub-harmonic seeded beam operations will push the output wavelength below 200 nm. Chirped pulse amplification (CPA) operation will also be possible, and a planned energy upgrade (by powering a fifth linac section) to 310 MeV will extend the wavelength range of the FEL to below 100 nm.
Book Synopsis Free Electron Lasers 2003 by : Eisuke J. Minehara
Download or read book Free Electron Lasers 2003 written by Eisuke J. Minehara and published by Newnes. This book was released on 2012-12-02 with total page 800 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book contains the Proceedings of the 25th International Free Electron Laser Conference and the 10th Free Electron Laser Users Workshop, which were held on September 8-12, 2003 in Tsukuba, Ibaraki in Japan.
Author :United States. Congress. House. Committee on Science. Subcommittee on Energy and Environment Publisher : ISBN 13 : Total Pages :1452 pages Book Rating :4.:/5 (327 download)
Book Synopsis The DOE FY 99 Budget Authorization Request ; H.R. 1806, to Provide for the Consolidation of the DOE Offices of Fossil Energy, Renewable Energy, and Energy Efficiency ; S. 965, to Amend Title II of the Hydrogen Future Act of 1996 by : United States. Congress. House. Committee on Science. Subcommittee on Energy and Environment
Download or read book The DOE FY 99 Budget Authorization Request ; H.R. 1806, to Provide for the Consolidation of the DOE Offices of Fossil Energy, Renewable Energy, and Energy Efficiency ; S. 965, to Amend Title II of the Hydrogen Future Act of 1996 written by United States. Congress. House. Committee on Science. Subcommittee on Energy and Environment and published by . This book was released on 1998 with total page 1452 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Analysis of a High Brightness Photo Electron Beam with Self Field and Wake Field Effects by :
Download or read book Analysis of a High Brightness Photo Electron Beam with Self Field and Wake Field Effects written by and published by . This book was released on 1991 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Studies of Positional Stability of the Electron Beam in the NSLS Storage Ring by : L. H. Yu
Download or read book Studies of Positional Stability of the Electron Beam in the NSLS Storage Ring written by L. H. Yu and published by . This book was released on 1985 with total page 3 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Analysis of a High Brightness Photo Electron Beam with Self Field and Wake Field Effects by :
Download or read book Analysis of a High Brightness Photo Electron Beam with Self Field and Wake Field Effects written by and published by . This book was released on 1991 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: High brightness sources are the basic ingredients in the new accelerator developments such as Free-Electron Laser experiments. The effects of the interactions between the highly charged particles and the fields in the accelerating structure, e.g. R.F., Space charge and Wake fields can be detrimental to the beam and the experiments. We present and discuss the formulation used, some simulation and results for the Brookhaven National Laboratory high brightness beam that illustrates effects of the accelerating field, space charge forces (e.g. due to self field of the bunch), and the wake field (e.g. arising from the interaction of the cavity surface and the self field of the bunch).
Book Synopsis Advanced Diagnostics for Developing High-Brightness Electron Beams by :
Download or read book Advanced Diagnostics for Developing High-Brightness Electron Beams written by and published by . This book was released on 1998 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt: The production of high-brightness particle beams calls for the development of advanced beam diagnostics. High brightness beams, meaning beams with a high density in phase space, are important for many applications, such as short-wavelength Free-Electron Lasers and advanced accelerator systems. A diagnostic that provides detailed information on the density distribution of the electron bunch in multi-dimensional phase-space is an essential tool for obtaining small emittance at a high charge. This diagnostic system has been developed at Brookhaven National Laboratory. One component of the system is the measurement of a slice emittance which provides a measurement of transverse beam properties (such as emittance) as a function of the longitudinal position. Changing the laser pulse profile of a photocathode RF gun has been suggested as one way to achieve non-linear emittance compensation and improve the brightness and that can be diagnosed by the slice emittance system. The other element of the diagnostic is the tomographic reconstruction of the transverse phase. In our work we give special attention to the accuracy of the phase space reconstruction and present an analysis using a transport line with nine focusing magnets and techniques to control the optical functions and phases. This high precision phase space tomography together with the ability to modify the radial charge distribution of the electron beam presents an opportunity to improve the emittance and apply non-linear radial emittance corrections. Combining the slice emittance and tomography diagnostics leads to an unprecedented visualization of phase space distributions in 5 dimensional phase-space and an opportunity to perform high-order emittance corrections. This should lead to great improvements in the beam brightness.
Book Synopsis Studies of High Brightness Electron Beams at the Accelerator Test Facility by : Joe Xu Zhou Qui
Download or read book Studies of High Brightness Electron Beams at the Accelerator Test Facility written by Joe Xu Zhou Qui and published by . This book was released on 1997 with total page 494 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book 432nd Brookhaven Lecture written by and published by . This book was released on 2008 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: At the Cutting Edge of Bright Beams: The NSLS Source Development Lab." Inspired by the discoveries with synchrotron light at the National Synchrotron Light Source (NSLS) and similar facilities around the world, researchers are looking for more brilliant beams of light. To develop this next-generation of light sources, accelerator physicists at the NSLS Source Development Laboratory (SDL) make use of a magnesium photocathode irradiated by ultraviolet laser light to produce electron beams of unprecedented brightness.
Book Synopsis Bright Electronic and Photon Beams by :
Download or read book Bright Electronic and Photon Beams written by and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The NSLS-II project will establish a third-generation light source at Brookhaven Lab, increasing beam-line brightness by 10,000. Achieving and maintaining this will involve tightly focusing the electron beam, providing the most efficient insertion devices, and achieving and maintaining a high electron current. In this talk, the various sub-systems of NSLS-II will be reviewed, and the requirements and key elements of their design will be discussed. In addition, the a small prototype of a light source of a different kind that was developed by the NSLS will also be discussed. It is a short-wavelength free electron laser (FEL), which is a promising way to realize diffraction-limited brightness combined with femtosecond-short pulses. At BNL, a deep ultraviolet FEL was successfully commissioned in 2001, and, soon thereafter, lasing in the UV and DUV was achieved. In this talk, the steps taken in FEL commissioning, the characterization of the FEL output, new ideas about manipulating it, and the discovery of a new phenomenon in the physics of bright electron beams will all be reviewed.
Book Synopsis Applications of High-Field and Short Wavelength Sources by : Louis DiMauro
Download or read book Applications of High-Field and Short Wavelength Sources written by Louis DiMauro and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Optical Society of America Conference on Applications of High Fields and Short Wavelength Sources, held in Santa Fe, New Mexico, USA, from March 20-22, 1997, was an exceptionally exciting conference. This conference was the seventh in a series of topical con ferences, held every two years, which are devoted to the generation and application of high field and short wavelength sources. The meeting was truly international in scope, with equal participation from both within and outside of the US. In the past two years, there has been dramatic progress in both laser and x-ray coher ent sources, both fundamental and applied. The 1997 meeting highlighted these advances, which are summarized in sections 1 and 2 of this volume. Terawatt-class lasers are now avail able in the UV or at high repetition rates. Michael Perry (LLNL) presented a keynote talk on petawatt class lasers and their applications in inertial confinement fusion, while Jorge Rocca (Colorado State University) presented a keynote talk on tabletop soft-x-ray lasers. Genera tion and measurement techniques are becoming very sophisticated throughout the UV and x ray region of the spectrum, and coherent sources have been extended to wavelengths below 30A. Phase control in the x-ray region is also now possible, and new phase-matching schemes in the UV have been experimentally demonstrated. It is clear that a new field of x-ray nonlin ear optics will deveiop rapidly over the next few years.
Book Synopsis Theory and Simulation of High-brightness Electron Beam Production from Laser-irradiated Photocathodes in the Presence of Dc and Rf Electric Fields by :
Download or read book Theory and Simulation of High-brightness Electron Beam Production from Laser-irradiated Photocathodes in the Presence of Dc and Rf Electric Fields written by and published by . This book was released on 1986 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: To take advantage of properties of laser-controlled photodiodes to produce electron beams, a new set of diode design criteria are needed. An analytical and numerical study of the geometrical and temporal factors that affect the design of high-brightness electron beams is presented. This study extends our previous work on this concept to include the effects of laser pulse shape, and emittance effects in the presence of rf fields. In general, the diode will not be space-charge limited. Therefore, the conventional Pierce electrode shapes are not appropriate. Furthermore, the finite temporal profile of the electron beams introduces a time-dependent space charge into the design problem. The approach taken here to minimize the emittance growth from the temporal profile of the space charge is to operate at low perveance. To obtain high currents, large electric fields are required. We exploit the fact that the electron emission is controlled by the laser and is independent of the voltage on the diode. The diode can then be driven by an rf field. In principle, operating at higher frequency allows higher breakdown limits, so the perveance can be made very small. However, operating at too high an rf frequency introduces other detrimental effects.
Book Synopsis Spain and Portugal by : Josiah Conder
Download or read book Spain and Portugal written by Josiah Conder and published by Nabu Press. This book was released on 2011-05 with total page 362 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is a reproduction of a book published before 1923. This book may have occasional imperfections such as missing or blurred pages, poor pictures, errant marks, etc. that were either part of the original artifact, or were introduced by the scanning process. We believe this work is culturally important, and despite the imperfections, have elected to bring it back into print as part of our continuing commitment to the preservation of printed works worldwide. We appreciate your understanding of the imperfections in the preservation process, and hope you enjoy this valuable book.
Book Synopsis Towards Advanced Electron Beam Brightness Enhancement and Conditioning by :
Download or read book Towards Advanced Electron Beam Brightness Enhancement and Conditioning written by and published by . This book was released on 2004 with total page 61 pages. Available in PDF, EPUB and Kindle. Book excerpt: The importance of developing higher-brightness electron beam sources for future accelerators was emphasized during the DOE-BESAC Subcommittee Meeting on the BES 20-Year Facility Roadmap held in Washington on February 20, 2003 [1]. The Subcommittee made a strong recommendation for an R&D program for high-brightness gun development. Spurred by this recommendation, a workshop was organized at Argonne National Laboratory on September 22-26, 2003 under the auspices of the ANL Theory Institute. About thirty experts in electron gun physics came for a week of intense discussion, reviewing the current state of the art and exploring ways to improve the performance of laser-driven rf photocathode guns, in particular whether an order of magnitude improvement of the beam brightness is feasible. Presentations given during the workshop can be found on the Internet at http://www.aps.anl.gov/asd/theory/presentations-online.html. This white paper grew out of the Argonne workshop. Its aim is to provide a summary of the ANL workshop and to propose an R&D program to develop advanced electron sources with an order of magnitude higher brightness than currently feasible. The budget for the R&D program for this purpose, discussed in Section 4, is estimated to be about $10M per year for ten years with an additional onetime start-up cost of $10M. Although expensive, the expenditure is well worthwhile in view of the tremendous benefits the higher brightness gun will bring in future accelerator development, in particular a fourth-generation light source based on x-ray free-electron laser (FEL) technology and a future linear collider, which together will cost about $10B. Facilities capable for general accelerator-based R&D have been and are constructed as a part of larger accelerator complexes for research in various scientific disciplines, generally without provision for their use for research in advancing accelerator science. Sophistication in accelerator devices has become such that it is now necessary to promote accelerator research in its own right to be pursued with strong participation by university groups.
