摘要
北京自由电子激光装置采用热阴极微波电子枪作为电子直线加速器的注入器，在较长脉冲工作条件下，热阴极微波枪固有的反轰效应使束流强度随时间增加，能量因束负载效应而降低，导致束流能散度变差，并在随后的加速过程中因注入束流的纵向发射度的扩大而进一步变坏，最终降低自由电子激光的性能。实验表明。
Beijing Free Electron Laser Facility(BFEL)adopts a thermionic cathode microwave electron gun as its RF linac injector.For reletively long macro pulse operation,the back bombardment effect deteriorates the characteristics of the accelerated electron beam.So we developed a prediction based self adaptive feed forward control system to compensate for the beam loading.The system is operational and some experimental results have been obtained,which suggests that the system is effective to improve the beam quality,and that its capable of dealing with complicated systems whose response is time variable,non linear and of long delay.
出处
《强激光与粒子束》
EI
CAS
CSCD
北大核心
1998年第1期98-102,共5页
High Power Laser and Particle Beams
基金
国家自然科学基金
