高重频自由电子激光装置快速逐束团控制系统设计  

Bunch-by-Bunch Fast Control of Beam Longitudinal Parameters in High Repetition Rate X-Ray Free Electron Lasers

作　　者：楚淑清 谷端 顾强 CHU Shuqing;GU Duan;GU Qiang(Shanghai Institute of Applied Physics,Chinese Academy of Sciences,Shanghai 201800,China;University of Chinese Academy of Sciences,Beijing 100049,China;Shanghai Advanced Research Institute,Chinese Academy of Sciences,Shanghai 201210,China)

机构地区：[1]中国科学院上海应用物理研究所,上海201800 [2]中国科学院大学,北京100049 [3]中国科学院上海高等研究院,上海201210

出　　处：《核电子学与探测技术》2024年第4期641-647,共7页Nuclear Electronics & Detection Technology

摘　　要：为优化高重频自由电子激光的性能,在第一级束团压缩器前引入一个常温射频腔,通过施加微小的啁啾到电子束上,实现对束团压缩逐束团控制。利用该常温射频腔,通过调整幅度以及相位的方法,对束团长度和束团到达时间等纵向参数进行快速反馈,从而确保束团品质。实验表明,本设计实现动态束团长度调控,对于未来自由电子激光设施的设计和运行具有借鉴意义。To optimize the performance of high-repetition-rate free-electron lasers,a normal-conducting radio frequency cavity is introduced before the first-stage bunch compressor.By applying small energy modulations to the electron beam,precise control of bunch compression is achieved on a bunch-by-bunch basis.Using this normal-conducting RF cavity,longitudinal parameters such as bunch length and arrival time are rapidly controlled through adjustments of amplitude and phase,ensuring the quality of the bunches.Experimental results demonstrate that this design enables dynamic control of bunch length,providing valuable insights for the design and operation of future FEL facilities.

关 键 词：高重频 逐束团 纵向参数 SXFEL SHINE 

分 类 号：TL501.5[核科学技术—核技术及应用]