西安200MeV质子应用装置同步加速器注入加速过程调试  

Synchrotron Injection and Acceleration Commissioning of Xi’an 200 MeV Proton Application Facility

作　　者：刘晓宇[1,2,3] 姚红娟 李岩[1,2,3] 叶文博[1,2,3] 杨业 郑曙昕 关遐令[1,2,3] 王学武 刘卧龙[4] 王敏文 王迪[4] 赵铭彤[4] 王忠明 LIU Xiaoyu;YAO Hongjuan;LI Yan;YE Wenbo;YANG Ye;ZHENG Shuxin;GUAN Xialing;WANG Xuewu;LIU Wolong;WANG Minwen;WANG Di;ZHAO Mingtong;WANG Zhongming(Key Laboratory of Particle&Radiation Imaging,Ministry of Education;Laboratory for Advanced Radiation Sources and Application,Tsinghua University;Department of Engineering Physics,Tsinghua University:Beijing 100084,China;State Key Laboratory of Intense Pulsed Radiation Simulation and Effect,Xi’an 710024,China)

机构地区：[1]清华大学教育部粒子技术与辐射成像实验室,北京100084 [2]清华大学先进辐射源及应用实验室,北京100084 [3]清华大学工程物理系,北京100084 [4]强脉冲辐射环境模拟与效应国家重点实验室,西安710024

出　　处：《现代应用物理》2023年第1期88-96,共9页Modern Applied Physics

基　　金：国家自然科学基金资助项目(12075131)。

摘　　要：介绍了西安200 MeV质子应用装置(Xi’an 200 MeV Proton Application Facility,XiPAF)同步加速器注入、俘获及加速过程的束流调试方法,该方法也可应用于类似的紧凑型同步加速器中。XiPAF采用7 MeV负氢离子剥离多圈注入,并采用绝热俘获方式实现纵向聚束,高频腔具有二次谐波功能以提高俘获和加速效率。采用FCT测量注入束流强度随时间的变化关系,使用BPM测量加速过程中闭轨随时间的变化关系,进行加速过程频率校正,优化加速效率。通过凸轨曲线优化、闭轨校正、工作点调整及双谐波加速等方式,获得注入后累积束流强度为47 mA,对应粒子数为2.5×10^(11),加速到60 MeV的累积束流强度为53 mA,对应粒子数为1×10^(11),达到设计目标。通过对比实验测量与模拟计算结果,分析了当前调束中存在的不足,并给出了后续束流调试工作的建议。A commissioning method for the injection,capture,and acceleration processes of compact synchrotron rings is proposed and applied to the synchrotron commissioning of the Xi’an 200 MeV Proton Application Facility(XiPAF).FCT is used to measure the current of injected beam,and closed orbit curve is used to correct RF frequency curve to improve acceleration efficiency.After injection bump curve optimization,closed orbit correction,tune adjustment,dual harmonic RF capture and acceleration,the maximum injection beam current of 47 mA is obtained,which corresponds to the particle number 2.5×10^(11).The maximum acceleration beam current of 53 mA is achieved,which corresponds to the number of particles 1×10^(11),and basically reach the design goal.By comparing the results of experiment measurement and simulation calculations,the deficiencies in the current commissioning are analyzed,and suggestions for the key tasks of future commissioning work are given.

关 键 词：西安200 MeV质子应用装置 同步环 剥离注入 双谐波加速 强流 

分 类 号：TL54[核科学技术—核技术及应用]