电子储存环逐束团诊断技术

研究新的束流信号调制、检测及分析方法，新的束流信号采样、调理及处理方法，从单一宽带束流探头信号中提取多维逐束团信息。世界上首次在电子储存环中实现逐束团三维位置、束长及电荷量的同步精确测量，首次实现储存环注入束团三维位置信息分离。以纽扣电极耦合镜像电流以及可见光波段同步辐射为信号源，高速数字示波器为数据采集设备，采用离线软件包对示波器采集保存的海量数据进行分析，先后实现了电荷量及寿命[1-2]、横向位置 [3-4]、纵向位置 [5-7]、横向截面尺寸 [8-9]、纵向长度 [10-11]等多个参数的精确测量，在此基础上开发了可同时完成多参数测量 [12-13] 并可适用于任意高能电子储存环的开源软件包HOTCAP [14-15]，横向位置分辨率好于5 um，纵向相位分辨率好于0.2 ps，束长分辨率好于1 ps。展开了包括注入瞬态过程性能评估 [16-17]、补注束团纵向阻尼振荡观测 [18]、新鲜注入束团纵向相空间初始参数提取 [19]、束流横向尾场分析[20]、束流负载效应评估[21]、光学参数原位诊断 [22]在内的多项应用研究。

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[9] Yimei Zhou, Yongbin Leng*, Sang Wu, Huizhong Bai, Longwei Lai, Fangzhou Chen and Ning Zhang, A novel approach to beam size measurement at SSRF, Journal of Physics: Conference Series 3010 (2025) 012093

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[19] Hongshuang Wang, Yongbin Leng*, andYimei Zhou, Technique for Extracting Initial Parameters of Longitudinal Phase Space of Freshly Injected Bunches in Storage Rings, and Its Applications, Instruments 2025, 9, 17, https://www.mdpi.com/2410-390X/9/3/17

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[21] Yimei Zhou, Yongbin Leng*, Longwei Lai, Xingyi Xu, Tianlong He, Experimental verification and analysis of the beam loading effect based on precise bunch-by-bunch 3D position measurement, Nuclear Inst. and Methods in Physics Research, A, 1051 (2023) 168201

[22] Xingyi Xu,Yongbin Leng*, New noninvasive measurement method of optics parameters in a storage ring using bunch-by-bunch 3D beam position measurement data，PHYSICAL REVIEW ACCELERATORS AND BEAMS 24, 062802 (2021)