HLS数字低电平系统的研制与在线调试  

Development and On-Line Operation of the HLS DLLRF System

作　　者：李超[1] 黄贵荣[1] 赵玉彬[2] 张志刚[2] 林宏翔[1] 刘勇涛[1] 

机构地区：[1]中国科学技术大学国家同步辐射实验室,合肥230029 [2]中国科学院上海应用物理研究所,上海201800

出　　处：《核电子学与探测技术》2015年第6期617-620,共4页Nuclear Electronics & Detection Technology

基　　金：国家同步辐射实验室重大改造工程项目资助

摘　　要：研制了数字低电平系统(DLLRF)替换了合肥光源(HLS)原模拟系统,实现储存环高频腔的频率调谐和高频加速场的快速幅相反馈控制。该系统主要由模拟信号变频和基于FPGA的数字处理两大功能模块构成。经过离线和在线调试,DLLRF闭环控制下高频场的无载幅相稳定度达到±0.1%和±0.1°。带束流运行后进一步优化了环路参数,储存环最高流强达到460 m A,并成功实现了300 m A TOP-OFF运行模式,高频场的载束幅相稳定度达到±0.2%和±0.2°。The Digital Low Level RF system（ DLLRF） which consists of frequency converting module and FPGA digital processing module,is developed to realize the RF cavity tuning and AP feedback control of the cavity field in the HLS Phase III upgrade project. After the off-line and on-line adjusting of DLLRF system,the unloaded amplitude and phase stability of the cavity field are attained to ± 0. 1% and ± 0. 1° respectively. By optimizing the DLLRF parameters with beam loading,the maximum beam current of 460 m A is accumulated in the storage ring,the 300 m A TOP-OFF operation is implemented,and the beam-loaded amplitude and phase stability of ± 0. 2% and ± 0. 2° are achieved.

关 键 词：储存环 高频系统 数字低电平系统 

分 类 号：TL503.2[核科学技术—核技术及应用]