钐钴永磁漂移管出气及质谱分析  

Outgassing of SmCo Permanent Magnets Drift Tube and Residual Gas Analysis

作　　者：关玉慧 王鹏程[1,2,3] 刘顺明 刘佳明[1,2] 孙晓阳[1,2] 谭彪 王一刚 朱邦乐[1,2] 李阿红 李波 吴小磊 于永积 邓昌东 袁月[1,2] GUAN Yuhui;WANG Pengcheng;LIU Shunming;LIU Jiaming;SUN Xiaoyang;TAN Biao;WANG Yigang;ZHU Bangle;LI Ahong;LI Bo;WU Xiaolei;YU Yongji;DENG Changdong;YUAN Yue(Spallation Neutron Source Science Center,Dongguan 523803,China;Institute of High Energy Physics,Chinese Academy of Sciences(CAS),Beijing 100049,China;University of Science and Technology of China,Hefei 230029,China)

机构地区：[1]散裂中子源科学中心,东莞523803 [2]中国科学院高能物理研究所,北京100049 [3]中国科学技术大学,合肥230029

出　　处：《真空科学与技术学报》2024年第9期791-796,共6页Chinese Journal of Vacuum Science and Technology

基　　金：国家重大科技基础设施建设项目中国散裂中子源二期工程项目(发改高技[2022]1903)。

摘　　要：文章系统地阐述了同步气路法测量材料出气率的实验原理,首先实验测得钐钴永磁铁室温下不同时刻的出气率并给出及其拟合曲线,可预测更长时间钐钴所对应的出气率。其次,实验测得钐钴永磁铁漂移管样机的整体出气量,并与钐钴样品总出气量进行比对,分析夹气是导致漂移管样机出气量下降缓慢的主要原因,并提出改进方案。然后,对比不同状态下的残余气体成分,分析结果对于后续漂移管的加工提供改进思路。最后,计算了钐钴永磁漂移管应用于DTL1#物理腔引起的压强变化,为钐钴永磁漂移管的应用提供数据支持。This article explains the experimental principle of the synchronous gas path method to measure the outgassing rate of materials systematically.First,the outgassing rate of SmCo permanent magnets at room temperature is measured at different times and its fitting curve is given,which can predict the outgassing rate of SmCo materials corresponding to a longer period of time.Secondly,the total outgassing of the SmCo permanent magnet drift tube prototype was experimentally measured and compared with the total outgassing of the SmCo sample.It was analyzed that air inclusion was the main reason for the slow decline in the outgassing of the drift tube prototype,and an improvement plan was proposed.Then,the residual gas composition under different conditions is compared,and the analysis results provide improvement ideas for subsequent drift tube processing.Finally,the pressure change caused by the application of the SmCo permanent magnet drift tube in the DTL1#physical cavity was calculated,providing data support for the application of the SmCo permanent magnet drift tube.

关 键 词：同步气路法 钐钴出气率 漂移管出气量 残余气体分析 钐钴永磁漂移管应用 

分 类 号：TB74[一般工业技术—材料科学与工程]