Beam Loading in the Nonlinear Regime of Plasma-Based Acceleration

M. Tzoufras, W. Lu, F. S. Tsung, C. Huang, W. B. Mori, T. Katsouleas, J. Vieira, R. A. Fonseca, and L. O. Silva
Phys. Rev. Lett. 101, 145002 – Published 29 September 2008


A theory that describes how to load negative charge into a nonlinear, three-dimensional plasma wakefield is presented. In this regime, a laser or an electron beam blows out the plasma electrons and creates a nearly spherical ion channel, which is modified by the presence of the beam load. Analytical solutions for the fields and the shape of the ion channel are derived. It is shown that very high beam-loading efficiency can be achieved, while the energy spread of the bunch is conserved. The theoretical results are verified with the particle-in-cell code OSIRIS.

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  • Received 15 March 2008


©2008 American Physical Society

Authors & Affiliations

M. Tzoufras1, W. Lu1, F. S. Tsung2, C. Huang2, W. B. Mori1,2, T. Katsouleas3, J. Vieira4, R. A. Fonseca4, and L. O. Silva4

  • 1Department of Electrical Engineering, University of California, Los Angeles, California 90095, USA
  • 2Department of Physics and Astronomy, University of California, Los Angeles, California 90095, USA
  • 3Department of Electrical Engineering, University of Southern California, Los Angeles, California 90089, USA
  • 4GoLP/Instituto de Plasmas e Fusão Nuclear, Instituto Superior Técnico, 1049-001 Lisboa, Portugal

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Vol. 101, Iss. 14 — 3 October 2008

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