强激光与粒子束2024，Vol.36Issue(8)：107-116,10.DOI:10.11884/HPLPB202436.230325
1.3GHz连续波超导射频腔的数字低电平射频系统和腔模拟器设计及测试
Digital low-level radio frequency system and cavity simulator for 1.3 GHz continuous-wave superconducting radio-frequency cavity
刘奎 1王程 2黄宇轩 1朱坤托 1王滔1
作者信息
- 1. 上海航天智能计算技术重点实验室,上海 201109||上海航天电子技术研究所,上海 201109
- 2. 中国科学院上海高等研究院,上海 201210
- 折叠
摘要
Abstract
A highly precise low-level radio-frequency(LLRF)system for a 1.3 GHz continuous-wave(CW)superconducting radio-frequency(RF)cavity is required to stabilize the electromagnetic field of cavities.However,because of the high loaded quality factor and wide electromagnetic frequency band of the 1.3 GHz CW RF cavity,the RF cavity has a small electromagnetic bandwidth in the frequency domain.The small electromagnetic frequency mismatch between the RF power source and RF cavity can easily cause ponderomotive instabilities in the generator driven resonator control system,eventually resulting in variations in the electromagnetic field of the cavity.In this study,a self-excited loop(SEL)control system was developed to prevent the occurrence of ponderomotive instabilities and compensate for the effects of microphonics noise.In addition,a digital 1.3 GHz RF cavity simulator,which can easily verify the designed algorithms of the LLRF system,was developed.The recorded measurements show that the SEL control system can ensure stability of the cavity field even when the RF cavity is detuned by 5 Hz.The comparison and validation have verified that the cavity simulator is a reliable platform to test the new algorithms.关键词
RF腔模拟器/自激励环路/发生器驱动/RF低电平控制系统Key words
RF cavity simulator/self-excited loop/generator driven resonator/low-level RF system分类
核科学引用本文复制引用
刘奎,王程,黄宇轩,朱坤托,王滔..1.3GHz连续波超导射频腔的数字低电平射频系统和腔模拟器设计及测试[J].强激光与粒子束,2024,36(8):107-116,10.
