53.667 MHz重离子RFQ的不稳定性研究  

Instability Research of 53.667MHz Heavy Ion RFQ

作　　者：张小虎[1,2] 原有进[1] 夏佳文[1] 刘戈[3] 殷学军[1] 杜衡[1,2] 李钟汕 陆元荣[3] 何源[1] 

机构地区：[1]中国科学院近代物理研究所,甘肃兰州730000 [2]中国科学院大学,北京100049 [3]北京大学核物理与核技术国家重点实验室,北京100871

出　　处：《原子能科学技术》2015年第5期951-954,共4页Atomic Energy Science and Technology

基　　金：国家重点基础研究发展计划资助项目(2014CB845500)

摘　　要：采用多粒子跟踪程序BEAMPATH对53.667 MHz RFQ进行模拟计算,基于RFQ腔体冷测、机械测量的结果,在考虑其入口束流不稳定性、电压不平整度、高频系统稳定度、加工误差、安装误差等因素的情况下,对RFQ的出口束流品质和不稳定性进行了系统分析。结果表明,在现有的加工、安装水平下,提高RFQ入口束流稳定度和高频系统稳定度对束流在RFQ中的传输十分必要。Based on the database from RFQ cavity cold model test and tip‐pole geometry measurement ,53.667 MHz RFQ was simulated by BEAMPATH code . The RFQ output beam quality and instability were analyzed as functions of input beam instability , voltage roughness ,stability of RF control system ,RFQ manufacturing error ,and mis‐alignment .According to these results ,it show s that it is essential for beam transmis‐sion in RFQ to improve input beam stability and RF control system stability at the pre‐sent level of machining and alignment .

关 键 词：BEAMPATH RFQ 腔体冷测 机械测量 束流品质 不稳定性 

分 类 号：TL53[核科学技术—核技术及应用]