TY - JOUR

T1 - Evolution of equilibrium particle beams in plasma under external wakefields

AU - Baistrukov, M. A.

AU - Lotov, K. V.

N1 - Funding Information: This work was supported by the Russian Science Foundation, Project No. 20-12-00062. Simulations were performed on HPC cluster ‘Akademik V M Matrosov’ []. Publisher Copyright: © 2022 IOP Publishing Ltd.

PY - 2022/7

Y1 - 2022/7

N2 - A beam of ultrarelativistic charged particles in a plasma can reach equilibrium with its own radial wakefield and then propagate with little change in shape. If some co-moving perturbation appears ahead of the beam, it may or may not destroy the beam with its wakefield, depending on the phase and amplitude of the wakefield. We numerically study which perturbations can destroy a single short bunch or a train of many short bunches at the parameters of interest for plasma wakefield acceleration in an axisymmetric configuration, and how fast. We find that there are particularly dangerous wakefield phases in which the beam can be destroyed by perturbations of very low amplitude. We also find that perturbations with an amplitude larger than the wakefield of a single bunch in the train are always destructive.

AB - A beam of ultrarelativistic charged particles in a plasma can reach equilibrium with its own radial wakefield and then propagate with little change in shape. If some co-moving perturbation appears ahead of the beam, it may or may not destroy the beam with its wakefield, depending on the phase and amplitude of the wakefield. We numerically study which perturbations can destroy a single short bunch or a train of many short bunches at the parameters of interest for plasma wakefield acceleration in an axisymmetric configuration, and how fast. We find that there are particularly dangerous wakefield phases in which the beam can be destroyed by perturbations of very low amplitude. We also find that perturbations with an amplitude larger than the wakefield of a single bunch in the train are always destructive.

KW - charged particle beam

KW - equilibrium

KW - numerical simulations

KW - plasma

KW - plasma wakefield acceleration

UR - http://www.scopus.com/inward/record.url?scp=85131048858&partnerID=8YFLogxK

U2 - 10.1088/1361-6587/ac6ffe

DO - 10.1088/1361-6587/ac6ffe

M3 - Article

AN - SCOPUS:85131048858

VL - 64

JO - Plasma Physics and Controlled Fusion

JF - Plasma Physics and Controlled Fusion

SN - 0741-3335

IS - 7

M1 - 075003

ER -