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Open Access Publications from the University of California

Compact disposal of high-energy electron beams usingpassive or laser-driven plasma decelerating stage

  • Author(s): Bonatto, A.
  • Schroeder, C.B.
  • Vay, J.-L.
  • Geddes, C.R.
  • Benedetti, C.
  • and, E. Esarey
  • Leemans, W.P.
  • et al.

A plasma decelerating stage is investigated as a compact alternative for the disposal of high-energy beams (beamdumps). This could benefit the design of laser-driven plasma accelerator (LPA) applications that require transportability and or high-repetition-rate operation regimes. Passive and laser-driven (active) plasma-based beam dumps are studied analyticallyand with particle-in-cell (PIC) simulations in a 1D geometry. Analytical estimates for the beam energy loss are comparedto and extended by the PIC simulations, showing that with the proposed schemes a beam can be efficiently decelerated in acentimeter-scale distance.

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