Investigation of gyrotron-based collective Thomson scattering for fast ion diagnostics in a compact high-field tokamak

被引：0
|
作者：
徐登峰 [1 ]
黄梅 [2 ]
陈曦璇 [1 ]
张峰 [2 ]
夏冬辉 [1 ]
王之江 [1 ]
潘垣 [1 ]
机构：
[1] International Joint Research Laboratory of Magnetic Confinement Fusion and Plasma Physics, State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Tech
[2] Southwestern Institute of Physics
来源：
Plasma Science and Technology | 2023年 / 06期
基金：
中国国家自然科学基金;
关键词：
D O I：
暂无
中图分类号：
TL631.24 [];
学科分类号：
082701 ;
摘要：
As a promising method for fast ion diagnostics,collective Thomson scattering(CTS) can measure the one-dimensional velocity distribution of fast ions with high spatial and temporal resolution.The feasibility of diagnosing fast ions in a compact high-field tokamak by CTS was studied in this work,and the results showed that a wide range of probing frequencies could be applied.A high-frequency case and a low-frequency case were mainly considered for fast ion diagnostics in a compact high-field tokamak.The use of a high probing frequency could effectively avoid the refraction effect of the beams,while the application of a low probing frequency allows greater flexibility in the selection of scattering angle which may help to improve the spatial resolution.Based on typical plasma conditions(B0=12.2 T,ne0=4.3×1020m-3,Te0=22.2 keV,Ti0=19.8 keV) for a compact high-field tokamak,a220 GHz CTS diagnostic that utilizes a small scattering angle of θ=30° and a 160 GHz CTS diagnostic that utilizes an orthogonal geometry were proposed.Further study showed that the high-frequency case could operate in a wider range of plasma conditions and provide more information on fast ions while the low-frequency case could achieve higher spatial resolution of the poloidal direction.
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页码：19 / 27
页数：9
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