Theories and Particle-In-Cell Simulations of Emittance Growth Due to Coulomb Collision in Plasma-based Accelerators

ORAL

Abstract

In plasma-based accelerators, a crucial requirement for many applications is to keep the beam emittance from degrading. One source of emittance degradation is through Coulomb collision. This paper shows that the emittance growth due to Coulomb collision can be correctly captured in particle-in-cell simulations, with a proper Monte Carlo binary collision module implemented. In addition, the theory of the emittance growth due to Coulomb collision is extended from a monoenergetic matched beam to a mismatched beam with energy spread.

* This research was supported by the Exascale Computing Project (17-SC-20-SC), a collaborative effort of the U.S. Department of Energy Office of Science and the National Nuclear Security Administration. This work was partly supported by the Director, Office of Science, Office of High Energy Physics, U.S. Dept. of Energy under Contract No. DEAC02-05CH11231.

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Authors

  • Yinjian Zhao

    Lawrence Berkeley National Laboratory

  • Remi Lehe

    LBNL, Lawrence Berkeley National Laboratory

  • Andrew Myers

    Lawrence Berkeley National Laboratory

  • Maxence Thevenet

    Lawrence Berkeley National Laboratory

  • Axel Huebl

    LBNL, previously HZDR, Lawrence Berkeley National Laboratory

  • Carl Schroeder

    Lawrence Berkeley National Laboratory, UCB; LBNL, Berkeley National Laboratory, BELLA Center, Lawrence Berkeley National Laboratory

  • Jean-Luc Vay

    LBNL, Lawrence Berkeley National Laboratory