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Title: The Effects of Ion Motion in Very Intense Beam-driven Plasma Wakefield Accelerators

Abstract

Recent proposals for using plasma wakefield accelerators in the blowout regime as a component of a linear collider have included very intense driver and accelerating beams, which have densities many times in excess of the ambient plasma density. The electric fields of these beams are widely known to be large enough to completely expel plasma electrons from the beam path; the expelled electrons often attain relativistic velocities in the process. We examine here another aspect of this high-beam density scenario: the motion of ions. In the lowest order analysis, for both cylindrically symmetric and 'flat' beams, it is seen that for the 'after-burner' scenario discussed at AAC 2004 the ions completely collapse inside of the electron beam. In this case the ion density is significantly increased, with a large increase in the beam emittance expected as a result. We also examine a less severe scenario, where the ion collapse onset is expected, and new, coupled equilibria in the beam and plasma density are created.

Authors:
; ; ;  [1]
  1. UCLA Department of Physics and Astronomy, 405 Hilgard Ave, Los Angeles, CA 90095 (United States)
Publication Date:
OSTI Identifier:
20655304
Resource Type:
Journal Article
Journal Name:
AIP Conference Proceedings
Additional Journal Information:
Journal Volume: 737; Journal Issue: 1; Conference: 11. advanced accelerator concepts workshop, Stony Brook, NY (United States), 21-26 Jun 2004; Other Information: DOI: 10.1063/1.1842641; (c) 2004 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0094-243X
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; AFTERBURNERS; BEAM EMITTANCE; BLOWOUTS; ELECTRIC FIELDS; ELECTRON BEAMS; ELECTRONS; ION DENSITY; IONS; LINEAR COLLIDERS; PLASMA; PLASMA DENSITY; RELATIVISTIC RANGE; VELOCITY; WAKEFIELD ACCELERATORS

Citation Formats

Rosenzweig, J.B., Cook, A.M., Thompson, M.C., and Yoder, R.. The Effects of Ion Motion in Very Intense Beam-driven Plasma Wakefield Accelerators. United States: N. p., 2004. Web. doi:10.1063/1.1842641.
Rosenzweig, J.B., Cook, A.M., Thompson, M.C., & Yoder, R.. The Effects of Ion Motion in Very Intense Beam-driven Plasma Wakefield Accelerators. United States. doi:10.1063/1.1842641.
Rosenzweig, J.B., Cook, A.M., Thompson, M.C., and Yoder, R.. Tue . "The Effects of Ion Motion in Very Intense Beam-driven Plasma Wakefield Accelerators". United States. doi:10.1063/1.1842641.
@article{osti_20655304,
title = {The Effects of Ion Motion in Very Intense Beam-driven Plasma Wakefield Accelerators},
author = {Rosenzweig, J.B. and Cook, A.M. and Thompson, M.C. and Yoder, R.},
abstractNote = {Recent proposals for using plasma wakefield accelerators in the blowout regime as a component of a linear collider have included very intense driver and accelerating beams, which have densities many times in excess of the ambient plasma density. The electric fields of these beams are widely known to be large enough to completely expel plasma electrons from the beam path; the expelled electrons often attain relativistic velocities in the process. We examine here another aspect of this high-beam density scenario: the motion of ions. In the lowest order analysis, for both cylindrically symmetric and 'flat' beams, it is seen that for the 'after-burner' scenario discussed at AAC 2004 the ions completely collapse inside of the electron beam. In this case the ion density is significantly increased, with a large increase in the beam emittance expected as a result. We also examine a less severe scenario, where the ion collapse onset is expected, and new, coupled equilibria in the beam and plasma density are created.},
doi = {10.1063/1.1842641},
journal = {AIP Conference Proceedings},
issn = {0094-243X},
number = 1,
volume = 737,
place = {United States},
year = {2004},
month = {12}
}