强激光与粒子束, 2010, 22 (12): 2973, 网络出版: 2011-01-05   

用束流位置监测器精确测量储存环流强

Precise beam current measurement for storage ring using beam position monitor
作者单位
中国科学院 上海应用物理研究所, 上海 201800
摘要
束流位置监测器(BPM)是粒子加速器束测系统中最为常见的元件, 该探头输出信号中除包含束流位置信息外还包含电荷量等其它信息, 可作为多参数束流诊断设备。采用BPM理论分析和数值仿真分析相结合的方法讨论了该种探头同时用于束流流强测量的可行性。在上海光源储存环上进行了束流试验, 测定了全环140个BPM的流强标定系数, 对BPM用于流强测量的分辨率、束流位置依赖性、频率依赖特性进行了测试, 根据实验结果讨论了该方法在当前技术条件下所能达到的性能及其局限性。
Abstract
Beam position monitor(BPM), as the most popular component in beam instrumentation system of particle accelerator, carrying not only beam position information but also other information like beam charge, is suitable for multi parameters diagnostics. This paper introduce BPM theory and numeric simulation results of pickup, discusses the feasibility of beam current measurement using BPM. Several beam experiments have been performed in the SSRF storage ring to calibrate current factor of 140 BPMs, evaluate current measurement resolution, beam position dependency and RF frequency dependency. The performance and limitation of this method was discussed based on these experiments.

冷用斌, 阎映炳, 周伟民, 袁任贤. 用束流位置监测器精确测量储存环流强[J]. 强激光与粒子束, 2010, 22(12): 2973. Leng Yongbin, Yan Yingbing, Zhou Weimin, Yuan Renxian. Precise beam current measurement for storage ring using beam position monitor[J]. High Power Laser and Particle Beams, 2010, 22(12): 2973.

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