摘要
用 MAGIC程序对设计的多种 1 2 Me V直线感应加速器的二极管结构进行模拟计算 ,得出了二极管阴极表面电场强度分布 ,并根据实验结果 ,得到了结构最佳设计的二极管模型 ;随后利用扫描电镜方法对不同天鹅绒的结构进行了分析与发射性能实验研究。最后得到优化后的二极管产生的电子束束流参数为 :发射束流 Ie=8.50 k A ,传输束流 I8≥ 3.0 k A ,打靶束流 I0 ≥ 2 .30 k A。
A series of optimization design for electron diode in 12MeV linear induction accelerator are studied by using numerical simulation code MAGIC and experiment method in order to improve the electron beam quality. MAGIC code solves the Maxwell equations in the presence of charged particle, electron field distribution on cathode surface which influences electron emission is given, and the optimum diode is obtained by comparing the results of experiment in 12 MeV linear induction accelerator. The paper also gives SEM analysis and experiment comparison of velvet emission. Finally, emitted current Ie=8.52 kA, beam current I8≥3.0 kA, targeted current I0≥2.30 kA with optimum diode are obtained.
出处
《强激光与粒子束》
EI
CAS
CSCD
北大核心
2001年第3期360-364,共5页
High Power Laser and Particle Beams
基金
国防科技基础研究项目资助课题
关键词
直线感应加速器
二极管
优化设计
天鹅绒
束流
Diodes
Electron beams
Optimization
Scanning electron microscopy
Systems analysis
