大型重离子加速器真空系统及其挑战  

The Vacuum System of Large Heavy-Ion Accelerator Facility and Its Challenges

作　　者：蒙峻[1,2] 杨伟顺 罗成[1,2] 谢文君 柴振[1,2] 李长春 焦纪强[1] 万亚鹏 刘建龙 蔺晓建 马向利 朱小荣 张喜平 魏宁斐[1] MENG Jun;YANG Weishun;LUO Cheng;XIE Wenjun;CHAI Zhen;LI Changchun;JIAO Jiqiang;WAN Yapeng;LIU Jianlong;LIN Xiaojian;MA Xiangli;ZHU Xiaorong;ZHANG Xiping;WEI Ningfei(Institute of Modern Physics,Chinese Academy of Science,Lanzhou 730000,China;University of Chinese Academy of Science,Beijing 100049,China)

机构地区：[1]中国科学院近代物理研究所,兰州730000 [2]中国科学院大学,北京100049

出　　处：《真空科学与技术学报》2021年第9期826-834,共9页Chinese Journal of Vacuum Science and Technology

摘　　要：中国科学院近代物理研究所从历次的大科学装置建设中,积累了大型真空腔体、超高/极高真空系统以及强流重离子加速器真空系统等设计经验。为了获得超高/极高真空系,从真空设备选择、材料处理、密封形式以及在线烘烤等方面形成了一套完整的工艺流程;在强流重离子加速器(High Intensity Heavy ion Accelerator Facility,HIAF)真空系统研制过程中,为了减小磁铁气隙尺寸,大幅度降低磁铁造价及电源运维成本,提出陶瓷内衬薄壁真空室新方法,并研制了原理性样机;为了有效控制HIAF未来运行过程中的动态真空效应,设计了束流准直器,开展了真空材料解吸率测量研究;为了解决高放射性区域真空系统的维护问题,提出了自重密封结构,同时研制了充气膨胀密封法兰;为了进一步优化高精度环形谱仪真空度,开展低温极高真空系统研究。The Institute of Modern Physics,Chinese Academy of Sciences has accumulated experiences in the design of large-scale vacuum chambers,ultra-high/extremely high vacuum systems and heavy ion accelerator vacuum systems from the construction of large scientific facilities.In order to obtain the ultra-high/extremely high vacuum system,a complete technological process has been formed about the selection of vacuum acquisition equipment,material processing,sealing form and in-situ baking;In the development of the heavy ion accelerator facility(HIAF),a new method of ceramic-lined thin-walled vacuum chamber was proposed and a principle prototype was developed to reduce the gap of the magnet and greatly reduce the cost of the magnet and the power supply;the research of vacuum material desorption yield was carried out and the beam collimators were designed to effectively control the dynamic vacuum effect in the future operation of HIAF;the self-weight sealing structure was proposed and the pillow-seal flange was developed to solve the maintenance problem of the vacuum system in the high-radioactive area;the cryogenic vacuum system was carried out to improve the vacuum system of Spectrometer Ring.

关 键 词：陶瓷内衬薄壁真空室 动态真空效应 解吸率 低温极高真空系统 

分 类 号：TB751[一般工业技术—真空技术]