数字束流位置探测器系统的信噪比需求分析  

Signal-to-noise ratio requirement analysis for digital beam position monitor system

作　　者：高国栋 唐旭辉 曹建社[1,2] 杜垚垚 刘智[1] 叶强 麻惠洲[1] 随艳峰[1,2] 岳军会[1] 何俊 季大恒[1] 杨静[1,2] 李宇鲲 魏书军[1,2] Gao Guodong;Tang Xuhui;Cao Jianshe;Du Yaoyao;Liu Zhi;Ye Qiang;Ma Huizhou;Sui Yanfeng;Yue Junhui;He Jun;Ji Daheng;Yang Jing;Li Yukun;Wei Shujun(Institute of High Energy Physics,Chinese Academy of Sciences,Beijing 100049,China;University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]中国科学院高能物理研究所,北京100049 [2]中国科学院大学,北京100049

出　　处：《强激光与粒子束》2022年第6期52-59,共8页High Power Laser and Particle Beams

基　　金：中国科学院青年创新促进会项目(Y202005);中国科学院重大科技基础设施重大成果培育项目(E01G74Y2);国家自然科学基金青年基金项目(11805221)。

摘　　要：以高能同步辐射光源(HEPS)对BPM提出的位置测量分辨率要求为出发点,介绍了BPM系统的整体架构并推导出BPM系统的信号链路中各级信号所需达到的信噪比;并根据ADC采样数据的信噪比需求,计算出ADC采样时钟的抖动需求;最后介绍了能够测量BPM信号信噪比和采样时钟抖动的BPM测试平台。各项结论可以作为判断BPM系统各部分能否达到HEPS工程要求的标准。The signal-to-noise ratio(SNR)of DBPM signal is one of the important parameters to measure the performance of BPM,and it plays a decisive role in the resolution of beam position measurement.Based on the position measurement resolution requirements of high energy photon source(HEPS)for BPM,this paper firstly introduces the overall architecture of BPM system and deduces the signal-to-noise ratio of signals at all levels in the signal link of BPM system.Then the calculation method of ADC sampling clock jitter and BPM electronics test platform are introduced.The conclusions in this paper can be used as a standard to judge whether each part of BPM system can meet the requirements of HEPS,which is of great significance to promote the batch application of self-developed BPM electronics in HEPS engineering.

关 键 词：高能同步辐射光源 数字束流位置探测器 信噪比 时钟抖动 ADC采样 

分 类 号：TL506[核科学技术—核技术及应用]