Analysis of dynamics and spatial structure on the filament during type I ELMy H-mode using VUVI system on EAST
Shi, Qiqi1,2; Ming, Tingfeng2; Zhuang, Qing2,3; Long, Feifei4; Li, Bang2,5; Gao, Shanlu2,3; Deng, Guozhong4; Liu, Shaocheng2; Wang, Yumin2; Liu, Xiaoju2
刊名AIP ADVANCES
2021-03-01
卷号11
DOI10.1063/5.0042509
通讯作者Ming, Tingfeng(tfming@ipp.ac.cn)
英文摘要In type I ELMy H-mode experiment, Edge localized mode (ELM) filaments are clearly captured by the high-speed vacuum ultraviolet imaging (VUVI) system which is developed on the Experimental Advanced Superconducting Tokamak. To analyze the ELM filament structures, the so-called singular value decomposition is performed on the imaging data to extract the key fluctuating components. In this work, the filament structure is characterized by the pitch angle and poloidal width. In a single ELM crash, it is found that the poloidal width increases (decreases) in the rise (decay) phase of the VUVI intensity induced by ELM crash. The pitch angle derived from the VUVI data agrees well with that calculated by the Equilibrium FITting code, indicating the filaments are aligned with the field lines. The poloidal velocity shows no obvious change during the rise and decay phases in an ELM crash. In addition, both the poloidal width and the poloidal velocity of the filament increase with the heating power. Since the filament structures are extracted from the line-integrated imaging data, all these results are obtained on the condition that the ELMs are confined to a narrow layer in the plasma.
资助项目National Key R&D Program of China[2017YFE0301205] ; National Natural Science Foundation of China[11975271] ; National Natural Science Foundation of China[12075284] ; National Natural Science Foundation of China[12075283] ; National Natural Science Foundation of China[12065018] ; Chinese Academy of President's International Fellowship Initiative[2021VMA0022]
WOS研究方向Science & Technology - Other Topics ; Materials Science ; Physics
语种英语
出版者AMER INST PHYSICS
WOS记录号WOS:000630481700001
资助机构National Key R&D Program of China ; National Natural Science Foundation of China ; Chinese Academy of President's International Fellowship Initiative
内容类型期刊论文
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/120792]  
专题中国科学院合肥物质科学研究院
通讯作者Ming, Tingfeng
作者单位1.Nanchang Univ, Dept Phys, Nanchang 330031, Jiangxi, Peoples R China
2.Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Peoples R China
3.Univ Sci & Technol China, Hefei 230026, Peoples R China
4.Shenzhen Univ, Shenzhen 518060, Peoples R China
5.Anhui Univ, Hefei 230601, Anhui, Peoples R China
6.Shenzhen Univ, Coll Optoelect Engn, Key Lab Optoelect Devices & Syst, Minist Educ & Guangdong Prov, Shenzhen 518060, Peoples R China
推荐引用方式
GB/T 7714
Shi, Qiqi,Ming, Tingfeng,Zhuang, Qing,et al. Analysis of dynamics and spatial structure on the filament during type I ELMy H-mode using VUVI system on EAST[J]. AIP ADVANCES,2021,11.
APA Shi, Qiqi.,Ming, Tingfeng.,Zhuang, Qing.,Long, Feifei.,Li, Bang.,...&Gao, Xiang.(2021).Analysis of dynamics and spatial structure on the filament during type I ELMy H-mode using VUVI system on EAST.AIP ADVANCES,11.
MLA Shi, Qiqi,et al."Analysis of dynamics and spatial structure on the filament during type I ELMy H-mode using VUVI system on EAST".AIP ADVANCES 11(2021).
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