摘要
电子储存环的注入过程是特殊的瞬态过程,研究补注电荷和储存电荷的三维位置融合过程可在线评估注入器与储存环的匹配度,也可为下一代光源诊断系统的搭建奠定技术基础。目前,上海同步辐射光源束流检测组研发了一套基于纽扣电极拾取信号和高速采集板卡的三维逐束团诊断系统,可精确测量逐束团三维位置。注入过程中补注电荷的三维位置信息可通过电荷加权平均法和比例系数法分别提取。通过对补注电荷横向betatron振荡和纵向同步振荡的分析,可原位提取betatron振荡振幅、同步振荡振幅、初始到达时间、同步振荡阻尼时间等多个动态参数,不需提供特别的机器研究时间,为储存环动力学研究提供了有力工具。
The injection process of electron storage ring is a special transient process.The mismatch between the injector and the storage ring can be evaluated online by studying the 3D merging of refilled charge and stored charge.For the next-generation light source,it can lay a technical foundation for building a diagnostic system.The beam instrumentation group of the Shanghai Synchrotron Radiation Facility developed a 3D bunch-by-bunch diagnostic system based on button pick-up signal and high-speed acquisition boards to measure the beam transverse position and longitudinal phase.Extracting the 3D position information of the refilled charge during the injection process is the critical issue in this system.The charge-weighted average method was proposed to extract the transverse position and the proportional coefficient method was proposed to extract the longitudinal phase.The transverse betatron oscillation and longitudinal synchrotron oscillation of the refilled charge were analyzed.3D position information of the refilled charge and several dynamic parameters of ring,such as longitudinal maximum oscillation amplitude,initial arrival time and synchrotron damping time,can be extracted during the user operation mode,which provides a strong toolkit for accelerator physics.
作者
周逸媚
冷用斌
张宁
高波
陈之初
ZHOU Yimei;LENG Yongbin;ZHANG Ning;GAO Bo;CHEN Zhichu(Shanghai Institute of Applied Physics,Chinese Academy of Sciences,Shanghai 201800,China;University of Chinese Academy of Sciences,Beijing 100049,China;Shanghai Advanced Research Institute,Chinese Academy of Sciences,Shanghai 201204,China)
出处
《原子能科学技术》
EI
CAS
CSCD
北大核心
2020年第11期2238-2244,共7页
Atomic Energy Science and Technology
基金
国家自然科学基金资助项目(11575282)。
关键词
三维位置
补注电荷
注入瞬态过程
横向betatron振荡
纵向同步振荡
3D position
refilled charge
injection transient process
transverse betatron oscillation
longitudinal synchrotron oscillation
