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

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

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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 prism-coupled,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 edge-localized modes(ELMs)are obtained on the EAST tokamak,which are then compared with the case of large-amplitude ELMs.

ultrafast charge exchange recombination spectroscopyEASTdiagnostic measurements

蒋军、李颖颖、陈冉、符佳、吕波、余羿、徐国盛、叶民友

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School of Nuclear Science and Technology,University of Science and Technology of China,Hefei 230026,People's Republic of China

Institute of Plasma Physics,Chinese Academy of Sciences,Hefei 230031,People's Republic of China

Enn Science and Technology Development Co.Ltd.,Langfang 065001,People's Republic of China

Sino-French Institute of Nuclear Engineering and Technology,Sun Yat-sen University,Zhuhai 519082,People's Republic of China

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National Magnetic Confinement Fusion Science Program of China国家自然科学基金国家自然科学基金

2019YFE030300041153501311975232

2024

10.1088/2058-6272/ad1b0e

等离子体科学和技术(英文版)
中国科学院合肥物质科学研究所 中国力学学会

等离子体科学和技术(英文版)

EI
影响因子：0.297
ISSN：1009-0630
年,卷(期)：2024.26(5)
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