The Effect of Quantum Radiation Emission in High-Energy Wakefield Stages

POSTER

Abstract

An electron beam passing through an undulator will experience radiation emission such that the high energy part of the beam will radiate more energy than the low energy part, decreasing its energy spread. In plasma accelerator stages with an injected electron beam at above one hundred GeV, stochastic radiation emission can cause a broadening of the energy spread as well. We use Particle-in-Cell simulations to study how quantum radiation emission would influence the energy spread and emittance of external injected beams inside laser wakefields. The effect of nonlinear focusing forces, beam energy spread and laser beam mismatch, however, can distort the phase space distribution and cause significant emittance growth. Theoretical analysis and numerical simulation were performed to find optimal conditions to minimize phase space distortions.

Authors

  • Qian Qian

    Center of Ultrafast Optical Science, University of Michigan, Ann Arbor, Michigan 48109, USA

  • D. Seipt

    Center of Ultrafast Optical Science, University of Michigan, Ann Arbor, Michigan 48109, USA, University of Michigan, Center for Ultrafast Optical Science, University of Michigan, Ann Arbor, Michigan 48109, USA

  • Yong Ma

    Center of Ultrafast Optical Science, University of Michigan, Ann Arbor, Michigan 48109, USA, University of Michigan, University of Michigan -Ann Arbor

  • A.G.R. Thomas

    Center for Ultrafast Optical Science, University of Michigan, Ann Arbor, Michigan 48109, Center of Ultrafast Optical Science, University of Michigan, Ann Arbor, Michigan 48109, USA, Center for Ultrafast Optical Science, University of Michigan, University of Michigan, University of Michigan, Ann Arbor, U. of Michigan