EAST 高环电压放电对等离子体平衡储能影响的研究

doi:10.16568/j.0254-6086.202504012

核聚变与等离子体物理 ›› 2025, Vol. 45 ›› Issue (4): 453-458.DOI: 10.16568/j.0254-6086.202504012

EAST 高环电压放电对等离子体平衡储能影响的研究

吴晓东 1, 2，高翔*2，钱金平 2

(1. 中国科学技术大学，合肥 230026；2. 中国科学院合肥物质科学研究院，合肥 230031)

收稿日期:2023-11-12 修回日期:2025-04-30 出版日期:2025-12-15 发布日期:2025-12-15
作者简介:吴晓东(1995-)，男，安徽合肥人，硕士研究生，从事等离子体平衡反演研究。
基金资助:
国家磁约束核聚变能发展研究专项课题(2022YFE03050003)；国家自然科学基金面上项目(12175277)

Study of the influence of EAST high loop-voltage discharge on plasma MHD equilibrium energy

WU Xiao-dong1, 2, GAO Xiang2, QIAN Jing-ping2

(1. University of Science and Technology of China, Hefei 230026;2. Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031)

Received:2023-11-12 Revised:2025-04-30 Online:2025-12-15 Published:2025-12-15

摘要/Abstract

摘要： EAST 托卡马克高环电压放电下的平衡反演发现包括等离子体平衡储能 W_mhd 在内多个宏观参数偏离合理区间，这可能与真空室感应涡流有关。为降低涡流对磁信号的影响从而纠正 W_mhd，构建了基于极向场(PF)线圈电流变化率的涡流分布模型。通过 EAST 装置测试放电数据首先验证涡流分布重建结果的合理性，接着对高环电压放电等离子体进行平衡反演重建，实现了等离子体平衡储能 W_mhd 和基于逆磁诊断获得的储能 W_dia 相互自洽。实验结果表明，可通过重建真空室高感应电流分布来降低其对 W_mhd 的影响。

关键词: 涡流, 等离子体平衡储能, 磁信号

Abstract: In EAST tokamak high loop-voltage discharges, some macro-parameters including plasma MHD equilibrium energy (W_mhd) are out of reasonable range, which are calculated through plasma equilibrium reconstruction. Induced vessel eddy can make W_mhd be unreasonable. To reduce eddy influence on magnetic signals and correct W_mhd, the eddy distribution model is constructed using poloidal coil current rate of change.Reconstructed eddy current distribution is verified by EAST test discharge data, after that, high loop-voltage plasma macro-parameters are calculated by using equilibrium reconstruction with eddy current. And the W_mhd is consistent with W_dia that is computed according to diamagnetic signal. The experimental results show that the influence of eddy current on W_mhd can be reduced by reconstructing the distribution of high induced current in the vacuum chamber.

Key words: Eddy, Plasma MHD equilibrium energy, Magnetic signals

中图分类号:

TL128

吴晓东, 高翔, 钱金平 . EAST 高环电压放电对等离子体平衡储能影响的研究[J]. 核聚变与等离子体物理, 2025, 45(4): 453-458.

WU Xiao-dong, GAO Xiang, QIAN Jing-ping. Study of the influence of EAST high loop-voltage discharge on plasma MHD equilibrium energy[J]. Nuclear Fusion and Plasma Physics, 2025, 45(4): 453-458.

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EAST 高环电压放电对等离子体平衡储能影响的研究

Study of the influence of EAST high loop-voltage discharge on plasma MHD equilibrium energy

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