CFETR ICRH射频真空窗的射频分析

doi:10.16568/j.0254-6086.202502006

核工业西南物理研究院 ›› 2025, Vol. 45 ›› Issue (2): 162-168.DOI: 10.16568/j.0254-6086.202502006

CFETR ICRH射频真空窗的射频分析

龙嘘云^{1, 2}，毛玉周¹，袁帅¹，秦成明¹，张新军¹，王永胜¹

(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:2023-04-27 修回日期:2023-09-02 出版日期:2025-06-15 发布日期:2025-06-13
作者简介:龙嘘云(1990-)，男，安徽合肥人，博士研究生，从事离子回旋加热系统工程设计的研究。
基金资助:
国家重点研发项目(2019YFE030703)；国家重大科学工程建设项目(2018-000052-73-01-0012282)；磁约束聚变实验室开放基金(2021AMF01001)

RF analysis of CFETR ICRH RF vacuum window

LONG Xu-yun^{1, 2}, MAO Yu-zhou¹, YUAN Shuai¹, QIN Cheng-ming¹,ZHANG Xin-jun¹, WANG Yong-sheng¹

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

Received:2023-04-27 Revised:2023-09-02 Online:2025-06-15 Published:2025-06-13

摘要/Abstract

摘要：

为了满足未来聚变装置高功率、长脉冲、稳态运行的需求，精心设计了双屏障结构的射频真空窗口。这种真空窗由99.5%纯氧化铝陶瓷组成，其不锈钢内导体和外导体表面镀铜。用有限元方法深入分析了尺寸变化对真空窗口S参数的影响，在指定的工作频率范围内S₁₁小于‒87 dB。通过弯曲的方法实现了陶瓷倾斜角度的优化，有效降低了其表面电场分量。使用电晕环结构精心重建了局部电场分布。分析了在峰值电压45 kV下真空窗的电场分布，其最大电场保持在2 kV·mm^‒1以下。在稳定工作状态、全反射状态和极限状态三种不同的工作条件下，射频功率损耗分别为643.24 W、1286.49 W和5210.28 W。

关键词: CFETR, ICRH, 射频真空窗, 双屏障

Abstract:

To satisfy the demands of high-power, long-pulse, steady-state operations in forthcoming fusion devices, a dual-barrier structured RF vacuum window has been meticulously designed. The window consists of 99.5% pure alumina ceramic, with stainless steel inner and outer conductors featuring copper plating on their surfaces. The impact of size change on the S-parameters of the vacuum window was analyzed with the finite element method, and S₁₁ was less than 87 dB within the designated operational frequency range. Optimization of the ceramic tilt angle was achieved through bending, effectively reducing its surface electric field component. The local electric field distribution was meticulously reconstructed using a corona ring structure. The electric field distribution of the vacuum window under a peak voltage of 45 kV was obtained, and the maximum electric field remained below 2 kV·mm^‒1. Furthermore, an evaluation of RF losses was conducted under three distinct working conditions: stable operation state, full reflection state and extreme state, yielding power losses of 643.24 W, 1286.49W, and 5210.28 W, respectively.

Key words: CFETR; ICRH, RF vacuum window, Dual-barrier

中图分类号:

TL62⁺2

龙嘘云, 毛玉周, 袁帅, 秦成明, 张新军, 王永胜. CFETR ICRH射频真空窗的射频分析[J]. 核工业西南物理研究院, 2025, 45(2): 162-168.

LONG Xu-yun, MAO Yu-zhou, YUAN Shuai, QIN Cheng-ming, ZHANG Xin-jun, WANG Yong-sheng. RF analysis of CFETR ICRH RF vacuum window[J]. Nuclear Fusion and Plasma Physics, 2025, 45(2): 162-168.

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CFETR ICRH射频真空窗的射频分析

RF analysis of CFETR ICRH RF vacuum window

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