中国散裂中子源二期648 MHz超导腔调谐器设计  

Design of 648 MHz superconducting cavity tuner forChina Spallation Neutron Source phase II

作　　者：刘铭 米正辉 潘卫民[1,3,4] 葛锐 贺斐思[1,3,4] 周文中 徐妙富 王子晗[1,3,4] Liu Ming;Mi Zhenghui;Pan Weimin;Ge Rui;He Feisi;Zhou Wenzhong;Xu Miaofu;Wang Zihan(Institute of High Energy Physics,Chinese Academy of Sciences,Beijing 100049,China;Spallation Neutron Source Science Center,Dongguan 523803,China;Key Laboratory of Particle Accelerator Physics and Technology,Chinese Academy of Sciences,Beijing 100049,China;University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]中国科学院高能物理研究所,北京100049 [2]散裂中子源科学中心,广东东莞523803 [3]中国科学院粒子加速器物理与技术重点实验室,北京100049 [4]中国科学院大学,北京100049

出　　处：《强激光与粒子束》2023年第12期97-105,共9页High Power Laser and Particle Beams

基　　金：中国科学院青年创新促进会-人才支撑体系专项(292022000038)。

摘　　要：中国散裂中子源二期升级采用超导腔技术方案,其中在165~300 MeV能量段采用648 MHz 6-cell超导腔模组,每个模组中集成3只6-cell超导腔。超导腔工作在脉冲模式,为了保证超导腔2 K下的频率满足运行要求,每只超导腔需要一套低温调谐器对其频率进行精确调节控制。针对648 MHz 6-cell超导腔的结构和运行特点进行了低温调谐器的设计,采用快慢组合机构补偿超导腔的频率偏移,对调谐器的基本性能和超导腔脉冲模式运行下的动态洛伦兹失谐进行了分析。The China Spallation Neutron Source phase II(CNSS-II)is upgraded with superconducting cavitytechnology,which uses 648 MHz 6-cell superconducting cavity module in the energy range of 165−300 MeV.Three6-cell superconducting cavities are integrated in each module.The superconducting cavity works in pulse mode.Toensure that the frequency of the superconducting cavity meets the operation requirements at 2 K,each superconductingcavity needs a set of low-temperature tuner to precisely adjust and control its frequency.According to the structure andoperation characteristics of the 648 MHz 6-cell superconducting cavity,a low-temperature tuner is designed.Thefrequency offset of the superconducting cavity is compensated by a fast-slow combination mechanism.The basicperformance of the tuner and the dynamic Lorentz detuning of the superconducting cavity in pulse mode are analyzed.

关 键 词：超导腔 调谐器 动态洛伦兹失谐 压电陶瓷 

分 类 号：TL503.2[核科学技术—核技术及应用]