合肥光源横向反馈系统的改进与试验结果  

Update and experiment results of Hefei light source transverse feedback system

作　　者：杨永良[1] 王筠华[1] 刘祖平[1] 陈园博[1] 李为民[1] 孙葆根[1] 周泽然[1] 孟鸣[1] 

机构地区：[1]中国科学技术大学国家同步辐射实验室,合肥230029

出　　处：《强激光与粒子束》2010年第1期140-144,共5页High Power Laser and Particle Beams

基　　金：国家自然科学基金项目(10175063)

摘　　要：介绍了在合肥光源横向模拟反馈样机系统进行的改造和升级。主要包括前端束流位置信号处理模块的重建和与直流成分剔除单元模块。同时还进行了信号矢量合成模块的优化与改造、增加独立可调增益模块以及优化信号传输线路在内的重要改进。对改进后的反馈系统进行了抑制耦合束团不稳定性试验,相关试验数据分析结果表明,反馈系统提供的注入阻尼率提高了一个数量级。The transverse analog feedback system of Hefei light source has been redeveloped. The new improved designs including beam position signal processing unit, DC-component signal removing unit, vector signal computing unit, etc, are described and new system’s commissioning results are discussed. The transverse coupled bunch instability at 200 MeV injection status is experimentally studied. The results show that, the injection damping rate is improved from 1.22 ms to 0.16 ms and the remnant beta oscillation can be suppressed.

关 键 词：束流反馈 矢量合成 阻尼率 边带 

分 类 号：TL594[核科学技术—核技术及应用]