利用太赫兹固态源对 Keda Torus eXperiment (KTX) 进行波动测量的偏振计干涉仪诊断法

IF 1.6 3区物理与天体物理 Q3 PHYSICS, FLUIDS & PLASMAS

Plasma Science & Technology Pub Date : 2023-11-16 DOI:10.1088/2058-6272/ad0d55

Xingkang Wang, W. Mao, Jinlin Xie, T. Lan, Hong Li, A. Liu, Chu Zhou, X. Wen, Zian Wei, Jie Wu, Chen Chen, Dongkuan Liu, Xianhao Rao, Hu Cai, Jiaren Wu, Peng Deng, Haiqing Liu, Weixing Ding, Zhuang Ge, Wandong Liu

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引用次数: 0

摘要

在 Keda Torus eXperiment（KTX）上开发了多通道偏振计干涉仪，用于研究平衡动力学和内部磁波动。基于太赫兹固态源（约 650 千兆赫）的三波技术被用于同时测量电子密度和法拉第旋转角。微波源的输出功率为 2 mW。利用旋转波板测试了法拉第旋转效应，相位噪声小于 0.8°，密度相位噪声小于 0.9°。对 KTX 上放电的法拉第旋转角和密度的测量显示了对内部 MHD 活动的高灵敏度。

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Polarimeter-interferometer diagnostic using terahertz solid state sources for fluctuation measurements on Keda Torus eXperiment (KTX)

A multi-channel polarimeter-interferometer has been developed on the Keda Torus eXperiment (KTX) for the study of equilibrium dynamics and internal magnetic fluctuations. Three-wave technique based on terahertz solid state sources (~650 GHz) is applied for simultaneous measurements of electron density and Faraday rotation angle. The output power of the microwave source is 2 mW. Faraday rotation effect using a rotating wave plate is tested with phase noise less than 0.8°, and the density phase noise is less than 0.9°. Measurement of Faraday rotation angle and density for discharges on KTX have demonstrated high sensitivity to internal MHD activities.

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来源期刊

Plasma Science & Technology 物理-物理：流体与等离子体

CiteScore

3.10

自引率

11.80%

发文量

3773

审稿时长

3.8 months

期刊介绍： PST assists in advancing plasma science and technology by reporting important, novel, helpful and thought-provoking progress in this strongly multidisciplinary and interdisciplinary field, in a timely manner. A Publication of the Institute of Plasma Physics, Chinese Academy of Sciences and the Chinese Society of Theoretical and Applied Mechanics.