逐圈测量系统定标和新近实验结果  

Calibration of turn-by-turn system and new testing results

作　　者：王筠华[1] 刘建宏[1] 孙葆根[1] 李为民[1] 刘祖平[1] 王琳[1] 杨永良[1] 郑凯[1] 

机构地区：[1]中国科学技术大学国家同步辐射实验室,安徽合肥230029

出　　处：《强激光与粒子束》2004年第5期672-676,共5页High Power Laser and Particle Beams

基　　金：国家重点项目NSRL二期工程资助课题;国家自然科学基金资助课题(10175063)

摘　　要：　主要介绍了合肥光源储存环上,正在应用和改进中的逐圈测量系统的定标和灵敏度;比较和分析了利用该系统获得的储存环200MeV和800MeVdamping时间测量结果;在环注入调试中发现了束流积累限制的原因。它不仅可测到储存环的damping时间、beta振荡幅度和工作点瞬时变化,而且是研究抑制环的束流不稳定性和提高注入积累效率的重要测量手段。系统使用对数比电路完成位置信号处理,具有宽的动态范围和带宽以及好的线性度和稳定的运行性能,而且造价低廉,易实现。This paper introduces the calibration and the sensitivity of the turn-by-turn system applied and improved on storage ring of Hefei Light Source (HLS). It pressents the results of the compare and analysis of the damping time at 200MeV and 800MeV by the data measured with the system. The causation to limit beam current accumulation is found in the injection beam monitoring. This system was not only used to measure the damping rate, β oscillation and υ change, but also to research the injecting effectiveness and beam instability. In design, the log-ratio electronics circuit with working frequency 408MHz (2×RF of HLS) was chosen to characterize machine properties of the HLS storage ring. The log-ratio signal processor has properties of low noise, wide bandwidth and wide dynamic range, as well as good linearity response.

关 键 词：束流位置监测系统 逐圈测量 对数比线路 

分 类 号：TL506[核科学技术—核技术及应用]