Wakefield acceleration of nonmonoenergetic electron bunches

被引：4
|
作者：
Kuznetsov, S. V. [1 ]
机构：
[1] Russian Acad Sci, Inst High Energy Dens, Associated Inst High Temp, Moscow 127412, Russia
来源：
PLASMA PHYSICS REPORTS | 2006年 / 32卷 / 04期
基金：
俄罗斯基础研究基金会;
关键词：
D O I：
10.1134/S1063780X06040027
中图分类号：
O35 [流体力学]; O53 [等离子体物理学];
学科分类号：
070204 ; 080103 ; 080704 ;
摘要：
The process of trapping and acceleration of a nonmonoenergetic electron bunch of finite length is investigated analytically in terms of a one-dimensional model, and relevant three-dimensional simulations are performed. The bunch is assumed to be injected into the region of maximum wake wave potential, the injection energy being such that the electron velocities are lower than the wave phase velocity. The study is aimed at clarifying how the spatial and energy parameters of the injected bunch in the trapping and acceleration stages depend on its initial energy spread. Formulas are obtained that describe the change in the bunch length and its energy spread in the course of acceleration. In some important limiting cases, the formulas are simple enough for them to be conveniently used for practical estimates. The injection conditions are discussed under which the electrons of a nonmonoenergetic bunch can be accelerated to high energies and the energy spread of the bunch electrons after acceleration is weakly sensitive to their initial energy spread. The analytical results agree well with the results of numerical simulations.
引用
收藏
页码：282 / 291
页数：10
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