Initial measurement of ultrafast charge exchange recombination spectroscopy on the EAST tokamak

被引：0
|
作者：
蒋军 [1 ,2 ]
李颖颖 [3 ]
陈冉 [2 ]
符佳 [2 ]
吕波 [2 ]
余羿 [4 ]
徐国盛 [2 ]
叶民友 [1 ]
机构：
[1] School of Nuclear Science and Technology, University of Science and Technology of China
[2] Institute of Plasma Physics, Chinese Academy of Sciences
[3] Enn Science and Technology Development Co.Ltd.
[4] Sino-French Institute of Nuclear Engineering and Technology, Sun Yat-sen University
来源：
Plasma Science and Technology | 2024年 / 05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：
摘要：
Ultrafast charge exchange recombination spectroscopy(UF-CXRS) has been developed on the EAST tokamak(Yingying Li et al 2019 Fusion Eng. Des. 146 522) to measure fast evolutions of ion temperature and toroidal velocity. Here, we report the preliminary diagnostic measurements after relative sensitivity calibration. The measurement results show a much higher temporal resolution compared with conventional CXRS, benefiting from the usage of a prismcoupled, high-dispersion volume-phase holographic transmission grating and a high quantum efficiency, high-gain detector array. Utilizing the UF-CXRS diagnostic, the fast evolutions of the ion temperature and rotation velocity during a set of high-frequency small-amplitude edgelocalized modes(ELMs) are obtained on the EAST tokamak, which are then compared with the case of large-amplitude ELMs.
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页码：45 / 51
页数：7
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