进气量对强流正离子源反向电子流的影响研究

doi:10.16568/j.0254-6086.202102015

核聚变与等离子体物理 ›› 2021, Vol. 41 ›› Issue (2): 183-186.DOI: 10.16568/j.0254-6086.202102015

进气量对强流正离子源反向电子流的影响研究

吴铭钐1, 2，胡纯栋1, 2，谢亚红*1, 2，邑伟1，许永建1，梁立振1, 2

(1. 中国科学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)

收稿日期:2020-01-08 修回日期:2020-09-18 出版日期:2021-06-15 发布日期:2021-06-24
作者简介:吴铭钐(1991-)，男，浙江杭州人，博士研究生，从事聚变用大功率离子源研究。
基金资助:
国家自然科学基金(11575240, 11975261)

Effect of gas flow rate on back-streaming electron in the high current positive ion source for neutral beam injection

WU Ming-shan1, 2, HU Chun-dong1, 2, XIE Ya-hong1, 2, YI Wei1, XU Yong-jian1, LIANG Li-Zhen1, 2

(1. Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031; 2. University of Science and Technology of China, Hefei 230026)

Received:2020-01-08 Revised:2020-09-18 Online:2021-06-15 Published:2021-06-24

摘要/Abstract

摘要： 分析了EAST-NBI离子源束引出过程中反向电子的产生及物理特性，对典型情况下的进气量对离子源的影响进行了计算和实验研究。实验结果发现，质子比受进气量影响较小，进气量与反向电子流呈明显正相关。

关键词: 强流离子源, 反向电子流, 进气量

Abstract: The generation and behavior of the back-streaming electrons during the beam extraction process for EAST-NBI ion source are analyzed, and the influence of gas flow rate on ion source is calculated, and experimental research is carried out in typical cases. The experimental results indicate that gas flow rate has little effect on the proton ratio, and there is a positive correlation between gas flow rate and the flux of back-streaming electron.

Key words: High current ion source, Back-streaming electron, Gas flow rate

中图分类号:

TL62+9.1

吴铭钐1, 2，胡纯栋1, 2，谢亚红*1, 2，邑伟1，许永建1，梁立振1, 2. 进气量对强流正离子源反向电子流的影响研究[J]. 核聚变与等离子体物理, 2021, 41(2): 183-186.

WU Ming-shan1, 2, HU Chun-dong1, 2, XIE Ya-hong1, 2, YI Wei1, XU Yong-jian1, LIANG Li-Zhen1, 2. Effect of gas flow rate on back-streaming electron in the high current positive ion source for neutral beam injection[J]. NUCLEAR FUSION AND PLASMA PHYSICS, 2021, 41(2): 183-186.

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[3]	李军，胡纯栋，谢亚红，韦江龙. 4MW EAST-NBI离子源引出系统装配[J]. 核聚变与等离子体物理, 2012, 32(4): 351-355.

进气量对强流正离子源反向电子流的影响研究

Effect of gas flow rate on back-streaming electron in the high current positive ion source for neutral beam injection

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