Witness emittance growth caused by driver density fluctuations in plasma wakefield accelerators

V. A. Minakov, M. Tacu, A. P. Sosedkin, K. V. Lotov

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

We discovered a novel effect that can cause witness emittance growth in plasma wakefield accelerators. The effect appears in linear or moderately nonlinear plasma waves. The witness experiences a time-varying focusing force and loses quality during the time required for the drive beam to reach transverse equilibrium with the plasma wave. The higher the witness charge, the lower the emittance growth rate because of additional focusing of the witness by its own wakefield. However, the witness head always degrades, and the boundary between degraded and intact parts gradually propagates backward along the witness bunch.

Original languageEnglish
Article number093112
Number of pages6
JournalPhysics of Plasmas
Volume25
Issue number9
DOIs
Publication statusPublished - 1 Sep 2018

Keywords

  • AWAKE

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