Correction
of poloidal position in microwave imaging diagnostics based on ray-tracing

doi:10.16568/j.0254-6086.202402007

Nuclear Fusion and Plasma Physics ›› 2024, Vol. 44 ›› Issue (2): 170-176.DOI: 10.16568/j.0254-6086.202402007

• Nuclear Fusion Engineering • Previous Articles Next Articles

Correction of poloidal position in microwave imaging diagnostics based on ray-tracing

GAO Yuan, YANG Zhou-jun, ZHANG Zhi-chao, LUO Qiang, JIN Zi-yang, GAO Li, PAN Yuan

(State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430070)

Received:2022-04-02 Revised:2023-10-12 Online:2024-06-15 Published:2024-06-12

基于射线追踪的微波成像诊断极向位置修正

高远，杨州军^*，张智超，罗蔷，金子阳，高丽，潘垣

(华中科技大学电气与电子工程学院强电磁工程与新技术国家重点实验室，武汉 430074)

通讯作者: 杨州军(1982-)，男，湖北随州人，副教授，从事核聚变等离子体诊断和实验物理。
作者简介:高远(1997-)，男，吉林四平人，硕士，从事等离子微波诊断研究。
基金资助:
国家磁约束核聚变能发展研究专项(2018YFE0310300)；国家自然科学基金(51821005)

Abstract

Abstract: The influence of the plasma is studied in the quasi-optical design of microwave imaging diagnostics. The ray-tracing method is used to calculate the poloidal imaging position of ECEI diagnostic with J-TEXT experimental parameters. It is found that when the focusing position is located on the high-field side and the plasma density is high, the actual imaging position deviates greatly from the position of quasi-optical design. This correction will not only improve the reliability of diagnostic, but also provide a reference for analysis of signal, optimization of diagnostic operation interval and imaging optical design.

Key words: Electron cyclotron emission imaging, Quasi-optical design, Ray-tracing

摘要： 在微波成像诊断准光学设计中对等离子体介质对成像位置的影响进行了研究。采用射线追踪方法，在J-TEXT实验参数条件下，基于冷等离子体近似的色散关系，求解了电子回旋辐射成像(ECEI)诊断的极向成像位置。对比分析了射线追踪相较于传统准光学成像的成像位置的修正效果，发现聚焦位置位于高场侧和高密度等离子体情况下，实际观测位置与准光学设计位置有较大偏差。该修正提高了诊断数据测量的可靠性，优化了微波诊断信号分析。

关键词: 电子回旋辐射成像, 准光学设计, 射线追踪

CLC Number:

TL65⁺1

GAO Yuan, YANG Zhou-jun, ZHANG Zhi-chao, LUO Qiang, JIN Zi-yang, GAO Li, PAN Yuan. Correction of poloidal position in microwave imaging diagnostics based on ray-tracing[J]. Nuclear Fusion and Plasma Physics, 2024, 44(2): 170-176.

高远, 杨州军, 张智超, 罗蔷, 金子阳, 高丽, 潘垣. 基于射线追踪的微波成像诊断极向位置修正[J]. 核工业西南物理研究院, 2024, 44(2): 170-176.

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Correction of poloidal position in microwave imaging diagnostics based on ray-tracing

基于射线追踪的微波成像诊断极向位置修正

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