Simulation and analysis of magnetic field configuration and extraction structure of the test experimental negative ion source for HL-2M

doi:10.16568/j.0254-6086.201803006

Abstract

Abstract:

CST EM studio and particle studio are used to simulate the cusp magnetic field, magnetic filter field, deflection magnetic field, and beam optics. The optimum magnetic configuration parameters have been determined by scanning surface magnetic fields of cusp magnets, filter magnets and deflection magnets: 4kG on 6 laps of cusp magnets around the ion source, 5.5kG on permanent filter magnets, and 2.5kG on deflection magnets. The performance of beam optics meets the requirements for neutral beam injection with 5~20kV extraction voltages and 50~160kV acceleration voltages.

Key words: Negative ion source, Neutral beam injection, Magnetic configuration, Beam optics, CST software

摘要：

采用CST电磁工作室和粒子工作室软件对负离子试验源的会切磁场、过滤磁场、电子偏转磁场的位形及引出束流的光学进行了模拟计算。通过扫描会切磁体、过滤磁体、电子偏转磁体的表面磁场参数，确定了最佳的磁体结构和运行参数：周边6圈会切磁体，会切磁体表面磁场4kG，过滤磁体表面磁场5.5kG，电子偏转磁体表面磁场2.5kG，引出电压5~20kV，加速电压50~160kV，引出负离子束的光学性能满足NBI注入要求。

关键词: 负离子源, 中性束注入, 磁场位形, 离子束光学, CST软件

CLC Number:

TL62+4

LUO Huai-yu, CAO Jian-yong, GENG Shao-fei, WEI Hui-ling, LIU He. Simulation and analysis of magnetic field configuration and extraction structure of the test experimental negative ion source for HL-2M[J]. NUCLEAR FUSION AND PLASMA PHYSICS, 2018, 2(3): 281-286.

罗怀宇，曹建勇，耿少飞，魏会领，刘鹤. HL-2M中性束负离子试验源磁场位形及引出结构模拟分析[J]. 核聚变与等离子体物理, 2018, 2(3): 281-286.

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Simulation and analysis of magnetic field configuration and extraction structure of the test experimental negative ion source for HL-2M

HL-2M中性束负离子试验源磁场位形及引出结构模拟分析

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