二维片状相对论电子束到靶规律研究  

Study on law of two-dimensional sheet relativistic electron beam transport to target

作　　者：高磊[1] 郝建红[1] 张芳[2] 赵强[2] 范杰清[1] 薛碧曦 董志伟[2] Gao Lei;Hao Jianhong;Zhang Fang;Zhao Qiang;Fan Jieqing;Xue Bixi;Dong Zhiwei(School of Electrical and Electronic Engineering,North China Electric Power University,Beijing 102206,China;Institute of Applied Physics and Computational Mathematics,Beijing 100094,China)

机构地区：[1]华北电力大学电气与电子工程学院,北京102206 [2]北京应用物理与计算数学研究所,北京100094

出　　处：《强激光与粒子束》2024年第4期227-232,共6页High Power Laser and Particle Beams

基　　金：国家自然科学青年基金项目(12205024)。

摘　　要：相对论电子束在理想顺磁环境下能够以较高的注量率击中靶目标,但实际情况中由于受环境的影响,相对论电子束的传输方向可能会与地磁场呈小角度偏差,因此会受到地磁场的作用产生拉莫尔进动,影响电子束的到靶瞄准以及到靶注量。基于二维片状相对论电子束,分别对相对论电子束顺磁和偏离磁场3°角两种传输情况进行仿真模拟,通过模拟束团的传输过程,分析研究了顺磁环境下不同传输距离束团到靶率的变化规律,以及偏离磁场3°角时传输过程中注量率的变化规律,为相对论电子束到靶率的预估和靶目标的瞄准提供数据参考。The relativistic electron beam can hit the target with a high injection rate under the ideal paramagnetic environment,but in reality,due to the influence of the environment,the transmission direction of the relativistic electron beam may deviate from the geomagnetic field at a small angle,thus the Larmor precession will be generated by the action of the geomagnetic field,which affects the target aiming of the electron beam as well as the amount of the injection to the target.In this paper,based on the two-dimensional sheet relativistic electron beam,taking the paramagnetic relativistic electron beam and the beam with 3°angle deviation from the magnetic field as two cases,through the simulation of the propagation of the bunches,we analyze and study the effect of different transmission distance on the bunch to target rate in paramagnetic environment,as well as that of the 3°deviation from the magnetic field on the amount of injection in the propagation process,thus to provide data for reference in the prediction of relativistic electron beam-to-target rate and target aiming.

关 键 词：相对论电子束 到靶率 注量率 回转点 拉莫尔进动 

分 类 号：O46[理学—电子物理学]