基于中能段电子束离子阱的杂质光谱研究平台的概念设计  

Conceptual design of impurity spectrum research platform based on intermediate energy electron beam ion trap

作　　者：宾斌 张洪明[1] 杨洋 郝强旺[1] 戴超 王福地 符佳 李颖颖 李军 肖君[4] 吕波 BIN Bin;ZHANG Hongming;YANG Yang;HAO Qiangwang;DAI Chao;WANG Fudi;FU Jia;LI Yingying;LI Jun;XIAO Jun;LYU Bo(Institute of Plasma Physics,Chinese Academy of Sciences,Hefei 230031,China;University of Science and Technology of China,Hefei 230026,China;School of Electrical Engineering,University of South China,Hengyang 421001,China;Institute of Modern Physics,Fudan University,Shanghai 200433,China)

机构地区：[1]中国科学院合肥物质科学研究院等离子体物理研究所,合肥230031 [2]中国科学技术大学,合肥230026 [3]南华大学电气工程学院,衡阳421001 [4]复旦大学现代物理研究所,上海200433

出　　处：《核技术》2021年第3期14-20,共7页Nuclear Techniques

基　　金：中国科学院科研仪器设备研制项目(No.YJKYYQ20180013)资助。

摘　　要：提出了一种基于传导冷却的紧凑型中能段电子束离子阱杂质光谱研究平台的系统设计方案,用于未来聚变堆上金属杂质原子光谱研究。系统设计主要包括磁场计算、内电极设计、光谱仪设计及其他辅助系统设计。通过使用COMSOL仿真软件对磁场和电子束进行了辅助设计,仿真结果显示,合适的设计参数可以使电子束离子阱(Electron Beam Ion Trap,EBIT)漂移管中心得到1.0 T的均匀磁场强度,电子束可以在漂移管中被约束并通过漂移管到达收集极,此设计可为进一步工程设计提供设计参数参考。[Background]Radiation loss caused by impurities in tokamak plasmas,especially of those metal impurities,is one of the crucial factors restricting the further improvement of plasma performance.[Purpose]This study aims at the atomic spectroscopy of metal impurities on fusion reactors with a conceptual design of a compact impurity spectrum research platform based on intermediate energy electron beam ion trap.[Methods]The system design scheme for a compact medium-energy impurity spectra platform(MISP)using conduct cooling low temperature superconductor was presented.Then the COMSOL simulation software was employed to design and analyse the magnetic field,and the electron beam trajectory in the electron beam ion trap(EBIT)of MISP.The magnetic field calculation,inner electrode design,spectrometer design and other auxiliary system design of the electron beam ion trap were carried out.[Results]Simulation results show that uniform magnetic field intensity of 1.0 T in the center of EBIT drift tube can be achieved with appropriate design parameters,and the electron beam can be constrained in the drift tube.[Conclusions]This concept design can provide a reference for further engineering design.

关 键 词：电子束离子阱 高电荷态离子 低温超导 

分 类 号：TL99[核科学技术—核技术及应用]