HIRFL-CSR电子冷却系统空心电子束性能研究  

Characteristic studies on hollow electron beam in HIRFL-CSR e-cooler system

作　　者：夏国兴[1] 夏佳文[1] 刘伟[1] 杨建成[1] 武军霞[1] 殷学军[1] 赵红卫[1] 魏宝文[1] 

机构地区：[1]中国科学院近代物理研究所

出　　处：《强激光与粒子束》2003年第8期809-812,共4页High Power Laser and Particle Beams

基　　金：国家"九五"重大科学工程HIRFL CSR项目基金资助课题

摘　　要：　电子冷却系统中冷却力的大小与电子束的温度密切相关。由于强流电子束自身产生的空间电荷场,使得电子束的速度离散,增加了电子束温度,降低了冷却效率。为了减小空间电荷效应,HIRFL CSR的电子冷却系统将首次采用空心电子束对储存环中的重离子束流进行冷却。通过分析实心电子束和空心电子束的空间电荷场,研究了其对电子束速度和温度的影响。Cooling force in electron cooling system is closely related to the temperature of electron beam. The velocity of electron has the offset due to space charge of intense electron beam. In order to minimize this effect, a new type of electron gun to produce the hollow electron beam is firstly adopted in HIRFL-CSR e-cooler project. The hot ion beam is cooled by Coulomb interaction with intense and cold hollow electron beams. By analysis of space charge effect of solid and hollow electron beam respectively, the impact on the electron velocity and additional temperature due to the space charge field are preliminarily investigated.

关 键 词：电子冷却 空间电荷场 空心电子束 

分 类 号：TL56[核科学技术—核技术及应用]