Simulation study of a passive plasma beam dump using varying plasma density
Accelerator Physics
2017-04-05 v1
Abstract
A plasma beam dump uses the collective oscillations of plasma electrons to absorb the kinetic energy of a particle beam. In this paper, a modified passive plasma beam dump scheme is proposed using either a gradient or stepped plasma profile to maintain a higher decelerating gradient compared to a uniform plasma. The improvement is a result of the plasma wavelength change preventing the re-acceleration of low energy particles. Particle-in-cell simulation results show that both stepped and gradient plasma profiles can achieve improved energy loss compared to a uniform plasma for an electron bunch of parameters routinely achieved in laser wakefield acceleration.
Cite
@article{arxiv.1701.01008,
title = {Simulation study of a passive plasma beam dump using varying plasma density},
author = {K. Hanahoe and G. Xia and M. Islam and Y. Li and O. Mete-Apsimon and B. Hidding and J. Smith},
journal= {arXiv preprint arXiv:1701.01008},
year = {2017}
}
Comments
13 pages, 6 figures