TY  - JOUR
AU  - Wu, Yitong
AU  - Ji, Liangliang
AU  - Geng, Xuesong
AU  - Yu, Qin
AU  - Wang, Nengwen
AU  - Feng, Bo
AU  - Guo, Zhao
AU  - Wang, Weiqing
AU  - Qin, Chengyu
AU  - Yan, Xue
AU  - Zhang, Lingang
AU  - Thomas, Johannes
AU  - Hützen, Anna
AU  - Pukhov, Alexander
AU  - Büscher, Markus
AU  - Shen, Baifei
AU  - Li, Ruxin
TI  - Polarized electron acceleration in beam-driven plasma wakefield based on density down-ramp injection
JO  - Physical review / E
VL  - 100
IS  - 4
SN  - 2470-0045
CY  - Woodbury, NY
PB  - Inst.
M1  - FZJ-2019-05602
SP  - 043202
PY  - 2019
AB  - We investigate the precession of electron spins during beam-driven plasma-wakefield acceleration based on density down-ramp injection by means of full three-dimensional (3D) particle-in-cell (PIC) simulations. A relativistic electron beam generated via, e.g., laser wakefield acceleration, serves as the driving source. It traverses the prepolarized gas target and accelerates polarized electrons via the excited wakefield. We derive the criteria for the driving beam parameters and the limitation on the injected beam flux to preserve a high degree of polarization for the accelerated electrons, which are confirmed by our 3D PIC simulations and single-particle modeling. The electron-beam driver is free of the prepulse issue associated with a laser driver, thus eliminating possible depolarization of the prepolarized gas due to ionization by the prepulse. These results provide guidance for future experiments towards generating a source of polarized electrons based on wakefield acceleration.
LB  - PUB:(DE-HGF)16
C6  - pmid:31770946
UR  - <Go to ISI:>//WOS:000489828800008
DO  - DOI:10.1103/PhysRevE.100.043202
UR  - https://juser.fz-juelich.de/record/866512
ER  -