Computational investigation of dissipation and reversibility of space-charge driven processes in beams

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Collisionless charged particle beams are presumed to equilibrate via the long-range potential from the space charge. The exact mechanism for this equilibration, along with the question of macroscopic reversibility, has been uncertain, however. A number of computational approaches based on particle-in-cell (PIC) methods are presented which can facilitate the resolution of these questions. One such technique is the self-consistent tracking of individual particle orbits through the nonlinear potential formed by nonuniform charge density distributions. This orbit-tracking model differs from the particle-core model in that the sampled particles are systematically chosen from the actual particles in a fully self-consistent simulation. The ... continued below

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193 Kilobytes pages

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al., Courtlandt Bohn et July 12, 2001.

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Collisionless charged particle beams are presumed to equilibrate via the long-range potential from the space charge. The exact mechanism for this equilibration, along with the question of macroscopic reversibility, has been uncertain, however. A number of computational approaches based on particle-in-cell (PIC) methods are presented which can facilitate the resolution of these questions. One such technique is the self-consistent tracking of individual particle orbits through the nonlinear potential formed by nonuniform charge density distributions. This orbit-tracking model differs from the particle-core model in that the sampled particles are systematically chosen from the actual particles in a fully self-consistent simulation. The results of this analysis are presented for a number of representative cases, and the implications of the study on equilibration mechanism are discussed.

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193 Kilobytes pages

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  • Particle Accelerator Conference 2001, Chicago, IL (US), 06/18/2001--06/22/2001

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  • Report No.: FERMILAB-Conf-01/194-T
  • Grant Number: AC02-76CH03000
  • Office of Scientific & Technical Information Report Number: 782877
  • Archival Resource Key: ark:/67531/metadc724770

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  • July 12, 2001

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  • Sept. 29, 2015, 5:31 a.m.

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  • April 1, 2016, 5:18 p.m.

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al., Courtlandt Bohn et. Computational investigation of dissipation and reversibility of space-charge driven processes in beams, article, July 12, 2001; Batavia, Illinois. (digital.library.unt.edu/ark:/67531/metadc724770/: accessed September 23, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.