强流电子束产生和传输的数值模拟  

NUMERICAL SIMULATIONS OF PRODUCTION AND TRANSPORT OF HIGH-CURRENT ELECTRON BEAMS

作　　者：黄礼金[1] 王贵荣[1] 杨震华[1] 吴尚清[1] 孙晓云 

机构地区：[1]北京应用物理与计算数学研究所

出　　处：《强激光与粒子束》1989年第3期233-240,共8页High Power Laser and Particle Beams

摘　　要：本文采用SLAC-226程序计算了1.5MV强流电子束在二极管内的加速过程以及出阳极后的传输过程。高亮度二极管的设计是高效率自由电子激光的关键技术之一。本工作的目的就是通过1.5MV注入器的数值模拟,为寻找优化的二极管结构设计提供一种有效的数值方法。程序考虑了外加电磁场和电子束自身空间电荷和自生磁场效应。我们讨论了外加磁场的各种构形以及它们对束流品质的影响,计算结果与国外EBQ程序计算结果和实验结果进行了比较,证明本工作的结果是可靠的。SLAC-226程序可以为直线感应加速器的设计提供参考数据。In this paper We present the simulation of the acceleration of a 1.5MV high-current electron beam in a diode and the following transport process using a electron trajectory progiam(SLAlC-226).The design of high brightness diodes is a critical issue in high efficiency FELs.The purporc of this work is to find an optimal diode configuration and to devdopan effective method of numerical simulstion .The program is specifically written to compute trajectories of electrons in an electrostatic and magnetostatic focussing system including the effects of space charge and self-magnetic fidds.Magnetic fields may be of arbitray configurations .We have discussed effects of the applied magnetic field on the beam guality. The Computed results are compared with those obtained using EBQ code and the experimental data at LLNL .It is shown that our simulation are reasonable and therefore ,the SLAC-226 code is very useful for designing of the induction Linacs.

关 键 词：强流电子束 二极管 自由电子激光 

分 类 号：TL248.602[核科学技术—核燃料循环与材料]