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Author: Publisher: ISBN: Category : Languages : en Pages : 48
Book Description
Research has concentrated on the excitation and stabilization of the beam-breakup (BBU) instability in high current, long-pulse electron beam transport through microwave cavity systems. Electron beams are generated by the Michigan Electron Long Beam Accelerator (MELBA) at parameters: 0.7 to 0.8 MV, I injected =40-400 A, and pulselength - 0.5 microsecs. Major accomplishments include: (1) Successful excitation of the beam-breakup (BBU) instability by microwave priming of the first cavity of a ten-RF cavity system, (2) Measurements of BBU growth as a function of priming frequency, confirming that the TM110 BBU mode was responsible for the growth, (3) Characterization of the BBU growth rate as a function of magnetic field and e-beam current, (4) The first experiments demonstrating that external-coupled-cavities reduce the growth rate for the BBU instability, and (5) Development of a theory for the beam breakup instability in quadrupole and solenoidal electron beam transport systems.
Author: Publisher: ISBN: Category : Languages : en Pages : 48
Book Description
Research has concentrated on the excitation and stabilization of the beam-breakup (BBU) instability in high current, long-pulse electron beam transport through microwave cavity systems. Electron beams are generated by the Michigan Electron Long Beam Accelerator (MELBA) at parameters: 0.7 to 0.8 MV, I injected =40-400 A, and pulselength - 0.5 microsecs. Major accomplishments include: (1) Successful excitation of the beam-breakup (BBU) instability by microwave priming of the first cavity of a ten-RF cavity system, (2) Measurements of BBU growth as a function of priming frequency, confirming that the TM110 BBU mode was responsible for the growth, (3) Characterization of the BBU growth rate as a function of magnetic field and e-beam current, (4) The first experiments demonstrating that external-coupled-cavities reduce the growth rate for the BBU instability, and (5) Development of a theory for the beam breakup instability in quadrupole and solenoidal electron beam transport systems.
Author: Anthony D. Hyder Publisher: Springer Science & Business Media ISBN: 1468455087 Category : Science Languages : en Pages : 812
Book Description
A NATO Advanced Study Institute (ASI) on High-Brightness Accelerators was held at the Atholl Palace Hotel, Pitlochry, Perthshire, Scotland, from July 13 through July 25, 1986. This publication is the Proceedings of the Institute. This ASI emphasized the basic physics and engineering of the rela tively new and fast-emerging field of high-brightness particle accelera tors. These machines are high- to very-high-current (amperes to hundreds of kiloamperes), modest-voltage (megavolt to tens of megavolts) devices, and as such are opposed to those historically used for high-energy physics studies (i.e., gigavolt and higher energies and rather low currents). The primary focus of the Institute was on the physics of the accelerator and the beam, including the dynamics, equilibria, and insta bilities of high-current beams near the space-charge limit; accelerator engineering techniques; and the applications of high-brightness beams in areas such as free-electron lasers, synchrotron-radiation sources, food processing, and heavy- and light-ion fusion. The Institute concentrated on bringing together several diverse but related communities which, we hope, benefited from this opportunity to interact: the North American activity in machine technology, engineer ing, and diagnostics with the strong European theoretical community; the basic beam physicists with the engineering technologists.
Author: James B Rosenzweig Publisher: World Scientific ISBN: 981449237X Category : Science Languages : en Pages : 620
Book Description
This book contains the proceedings of the 1999 ICFA workshop on the physics of high brightness beams. The workshop took a snapshot in time of a fast moving, interdisciplinary field driven by advanced applications such as high gradient, high energy physics linear colliders, high gain free electron lasers, heavy ion fusion, and transmutation of nuclear materials. While the field of high brightness beam physics has traditionally been divided into disparate electron and heavy ion communities, the workshop brought the two types of researchers together, so that a sharing of insights and methods could be achieved. Thus, this book represents a unifying step in the development of the diverse fascinating discipline of high brightness beam physics, with its challenges rooted in collective, nonlinear particle motion and ultra-high electromagnetic energy density.
Author: Luigi Palumbo Publisher: World Scientific ISBN: 9814474053 Category : Technology & Engineering Languages : en Pages : 729
Book Description
These proceedings comprise cutting-edge contributions by researchers at the frontiers of beam physics, free-electron-based light sources, and advanced accelerators. It represents a snap-shot of activity in these fields at a critical historical juncture, where rapid experimental progress is being reported, and new facilities such as X-ray free-electron lasers are under construction. The volume features invited contributions from leading researchers from the international beam physics community that summarize the state-of-the-art research in individual topics, as well as timely contributions from participants that arose during the workshop itself.
Author: National Research Council Publisher: National Academies Press ISBN: 0309126894 Category : Technology & Engineering Languages : en Pages : 66
Book Description
This book presents a scientific assessment of free-electron-laser technology for naval applications. The charge from the Office of Naval Research was to assess whether the desired performance capabilities are achievable or whether fundamental limitations will prevent them from being realized. The present study identifies the highest-priority scientific and technical issues that must be resolved along the development path to achieve a megawatt-class free-electron laser. In accordance with the charge, the committee considered (and briefly describes) trade-offs between free-electron lasers and other types of lasers and weapon systems to show the advantages free-electron lasers offer over other types of systems for naval applications as well as their drawbacks. The primary advantages of free-electron lasers are associated with their energy delivery at the speed of light, selectable wavelength, and all-electric nature, while the trade-offs for free-electron lasers are their size, complexity, and relative robustness. Also, Despite the significant technical progress made in the development of high-average-power free-electron lasers, difficult technical challenges remain to be addressed in order to advance from present capability to megawatt-class power levels.
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Author: Anthony D. Hyder
Author: James B Rosenzweig
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Author: University of Michigan. Board of Regents
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Author: Luigi Palumbo
Author: National Research Council