紧凑型高平均流强光阴极注入器(英文)

A Compact High-Average Current Photo-Injector

根据北京大学1+1／2单元超导腔直流-超导(DC-SC)光阴极注入器的实验研究结果,证明了这种新型光阴极注入器的可行性,在此基础上对这种新型注入器进行了升级设计,使之成为实用的紧凑型高平均流强的光阴极注入器,为北京大学自由电子激光装置提供品质良好的电子束流．给出了升级的3+1／2单元超导腔注入器的详细设计,包括注入器核心结构的电磁场设计、束流动力学模拟、机械设计．并对整个注入器的恒温器进行了初步设计．

Based on the experimental results of the complex DC-SC photocathode injector （DC gun and 1＋1/2cell superconducting cavity） at PekingUniversity, an improved injector design is proposed. The new injector can provide high average current electron beams with bunch charge of 100 pc, cw operation, low transverse emittance and short bunch length. The optimization of the DC gun and superconducting cavity of the upgraded injector, structure design of the injector are presented in this paper.