Design and application of Faraday screen fora new ICRH antenna in EAST

doi:10.16568/j.0254-6086.202501001

Nuclear Fusion and Plasma Physics ›› 2025, Vol. 45 ›› Issue (1): 1-6.DOI: 10.16568/j.0254-6086.202501001

• Nuclear Fusion Engineering • Next Articles

Design and application of Faraday screen fora new ICRH antenna in EAST

LIANG Qi-chao1, 2, ZHANG Wei1, LIU Lu-nan1, QIN Cheng-ming1, MAO Yu-zhou1, YANG Hua1

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

Received:2023-02-21 Revised:2024-04-22 Online:2025-03-15 Published:2025-03-15

EAST装置上新型离子回旋天线法拉第屏蔽的设计及应用

梁启超1, 2，张伟*1，刘鲁南1，秦成明1，毛玉周1，杨桦1

(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)

通讯作者: 张伟(1988-)，男，湖南娄底人，研究员，从事射频波加热研究。
作者简介:梁启超(1995-)，男，河北石家庄人，博士研究生，从事天线多物理场分析。
基金资助:
国家自然科学基金(12175273)

Abstract

Abstract:

To achieve the long pulse high power target of experimental advanced superconducting tokamak (EAST) and improve the coupling efficiency between ion cyclotron wave and plasma, and reduce the thermal load on the Faraday screen of the ICRH antenna, the Faraday screen of ICRH antenna is optimized. Using the RAPLICASOL ICRH antenna computational model, the structure of the Faraday screen was analyzed, and synthetically considering the maximum electric field strength, coupling impedance and the limited internal space of ICRH antenna the dimensions of the Faraday screen structure was determined ultimately. Subsequently, the heat flow distribution of the Faraday screen was optimized and analyzed. After simulation and optimization, under 300-second operational conditions, the highest temperature of the Faraday screen was 300℃, meeting the thermal design requirements of the Faraday screen. This antenna was successfully applied in the EAST experiments in 2021. The experimental results showed that the coupling and heating efficiency of the new ICRH antenna significantly improved. The experiments completed include 1.5MW/30s and 0.5MW/300s long-pulse operations, and the maximum temperature of the Faraday screen was 330℃, meeting the design requirements of the ICRH antenna.

Key words: EAST, ICRH antenna, Coupling efficiency, Faraday screen

摘要：

为达到全超导托卡马克核聚变实验装置(EAST)长脉冲高功率目标，提高离子回旋波与等离子体的耦合效率，并降低离子回旋共振加热(ICRH)天线法拉第屏蔽的热负载，需对ICRH天线中的法拉第屏蔽进行优化设计。通过RAPLICASOL ICRH天线计算模型对法拉第屏蔽结构进行计算分析，综合考虑最大电场强度、耦合阻抗以及离子回旋天线有限的内部空间，最终确定了法拉第屏蔽的结构尺寸。然后对法拉第屏蔽的流热分布进行了优化和分析。经过仿真优化设计，在300s运行条件下，法拉第屏蔽最高温度为300℃，满足法拉第屏蔽热设计要求。该天线于2021年成功应用于EAST实验。实验结果表明，新ICRH天线的耦合及加热效率明显提高，已完成1.5MW/30s和0.5MW/300s的长脉冲实验，并且法拉第屏蔽最高温度为330℃，满足ICRH天线的设计要求。

关键词: EAST, 离子回旋共振加热天线, 耦合效率, 法拉第屏蔽

CLC Number:

TL631

LIANG Qi-chao, ZHANG Wei, LIU Lu-nan, QIN Cheng-ming, MAO Yu-zhou, YANG Hua. Design and application of Faraday screen fora new ICRH antenna in EAST[J]. Nuclear Fusion and Plasma Physics, 2025, 45(1): 1-6.

梁启超, 张伟, 刘鲁南, 秦成明, 毛玉周, 杨桦. EAST装置上新型离子回旋天线法拉第屏蔽的设计及应用[J]. 核工业西南物理研究院, 2025, 45(1): 1-6.

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Design and application of Faraday screen fora new ICRH antenna in EAST

EAST装置上新型离子回旋天线法拉第屏蔽的设计及应用

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