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Observation of high frequency Alfvén eigenmodes excited by RF-accelerated minority hydrogen ions in the EAST tokamak

文献类型：期刊论文

作者Liu, Lunan1; Zhang, Wei1; Zhang, Xinjun1; Ochoukov, R.2; Qin, Chengming1; Zhu, Yubao1
刊名NUCLEAR FUSION
出版日期2024-12-01
卷号64
关键词ICRH heating minority heating scenario high frequency Alfv & eacute EAST tokamak n eigenmode
ISSN号0029-5515
DOI10.1088/1741-4326/ad83e2
通讯作者Zhang, Wei(wei.zhang@ipp.ac.cn) ; Zhang, Xinjun(xjzhang@ipp.ac.cn)
英文摘要The paper presents the original observation of high frequency Alfv & eacute;n eigenmode excited by fast minority hydrogen ions accelerated by ion cyclotron range of frequency waves in EAST. The frequency of high frequency Alfv & eacute;n eigenmodes is around 0.75 similar to 0.8 & lowast;Omega H, where Omega H is the cyclotron frequency of hydrogen ions evaluated at the low-field side plasma edge. It tracks the on-axis magnetic field Bt and the edge plasma electron density ne via the Alfv & eacute;nic relation omega similar to Bt & lowast;ne-1/2. The high frequency Alfv & eacute;n eigenmodes are always accompanied by sub-cyclotron modes in several experiments at EAST, consistent with the high frequency Alfv & eacute;n eigenmode detected on other conventional tokamaks, namely ASDEX Upgrade and DIII-D. Based on the previous study, these sub-cyclotron modes are consistent with the spectrum splitting produced by toroidal mode numbers (Gorelenkov et al 2003 Nucl. Fusion 43 228). We also found that the location of eigenmode excitation of high frequency Alfv & eacute;n eigenmode driven by RF-accelerated minority hydrogen ions remains unchanged even though the cyclotron resonance location of hydrogen ions varies with Bt.
WOS关键词ALFVEN EIGENMODES ; PHYSICS
资助项目Development Program of China[2019YFE03070000] ; Development Program of China[2019YFE03070003] ; Development Program of China[2022YFE03190200] ; National Natural Science Foundation of China[12105184] ; National Natural Science Foundation of China[11975265] ; National Natural Science Foundation of China[12175273] ; Comprehensive Research Facility for Fusion Technology Program of China[2018-000052-73-01001228] ; Foundation of Institute of Plasma Physics, Chinese Academy of Sciences[Y35ETY130E] ; EAST group at the Institute of Plasma Physics
WOS研究方向Physics
语种英语
WOS记录号WOS:001332106400001
出版者IOP Publishing Ltd
资助机构Development Program of China ; National Natural Science Foundation of China ; Comprehensive Research Facility for Fusion Technology Program of China ; Foundation of Institute of Plasma Physics, Chinese Academy of Sciences ; EAST group at the Institute of Plasma Physics
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/134557]  
专题中国科学院合肥物质科学研究院
通讯作者Zhang, Wei; Zhang, Xinjun
作者单位1.Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Peoples R China
2.Max Planck Inst Plasma Phys, Boltzmannstr 2, Garching, Germany
推荐引用方式
GB/T 7714		 Liu, Lunan,Zhang, Wei,Zhang, Xinjun,et al. Observation of high frequency Alfvén eigenmodes excited by RF-accelerated minority hydrogen ions in the EAST tokamak[J]. NUCLEAR FUSION,2024,64.
APA Liu, Lunan,Zhang, Wei,Zhang, Xinjun,Ochoukov, R.,Qin, Chengming,&Zhu, Yubao.(2024).Observation of high frequency Alfvén eigenmodes excited by RF-accelerated minority hydrogen ions in the EAST tokamak.NUCLEAR FUSION,64.
MLA Liu, Lunan,et al."Observation of high frequency Alfvén eigenmodes excited by RF-accelerated minority hydrogen ions in the EAST tokamak".NUCLEAR FUSION 64(2024).

入库方式： OAI收割

来源：合肥物质科学研究院

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