指南针
托卡马克
物理
微波食品加热
等离子体
光学
干涉测量
天文干涉仪
电子密度
等离子体诊断
磁场
计算物理学
核物理学
量子力学
作者
M. Varavin,A. V. Varavin,D. Naydenkova,J. Zając,F. Žáček,S. Nanobashvili,R. Pánek,V. Weinzettl,P. Bílková,P. Cahyna,F. Jaulmes,M. Farník,M. Imríšek,O. Bogár
标识
DOI:10.1016/j.fusengdes.2019.03.051
摘要
The present COMPASS tokamak at the Institute of Plasma Physics in Prague is equipped with the 2-mm interferometer, which gives a possibility to measure line-average electron densities up to 1.2×1020 m−3. A high magnetic field tokamak COMPASS-U will be designed and built to replace COMPASS. Higher line-average plasma densities in COMPASS-U of about 5×1020 m−3 will require a new design of the interferometer. This will provide measurements in a wide density range and will allow using a real-time gas puff density feedback. A solution based on the solid-state technology is proposed. The system will use two microwave transceivers with close sub-millimeter wavelengths and will fulfill the principle of the unambiguous measurement. An assessment of signal corrections corresponding to non-linearity effects caused by plasma refractive index is performed. The ray-tracing FIESTA-8 code was used to model the propagation of the probing waves through COMPASS-U plasmas.
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