Comparison of natural grassy ELM behavior in favorable/unfavorable B (t) in EAST

doi:10.1088/2058-6272/ac061b

	Comparison of natural grassy ELM behavior in favorable/unfavorable B (t) in EAST
	Ding, Genfan 2,3; Yang, Qingquan 3; Xu, Guosheng 3; Lin, Xin 1,3; Ye, Yang 4; Chen, Ran 3; Wang, Yumin 3; Zang, Qing 3; Lan, Heng 3; Chen, Liang 3
刊名	PLASMA SCIENCE & TECHNOLOGY
	2021-09-01
卷号	23
关键词	grassy ELM favorable and unfavorable B (t) clustered ELM EAST
ISSN号	1009-0630
DOI	10.1088/2058-6272/ac061b
通讯作者	Yang, Qingquan(yangqq@ipp.ac.cn) ; Xu, Guosheng(gsxu@ipp.ac.cn)
英文摘要	The properties of grassy edge-localized modes (ELMs) in EAST in the favorable and unfavorable B (t) are statistically studied. Statistical analysis indicates that there is no systematical difference in the frequencies of grassy ELMs under the two different magnetic configurations in the similar parameter spaces. The high-frequency grassy ELM (f (ELM) > 1 kHz) in unfavorable B (t) is dependent on the high poloidal beta beta (p) and high triangularity delta (u), while the high-frequency grassy ELM (f (ELM) > 1 kHz) in favorable B (t) appears to rely on the high plasma density. A frequently occurring phenomenon in favorable B (t) defined as 'clustered ELM' seems to be the most evident difference in ELM behavior between favorable and unfavorable B (t). Statistical analysis shows that larger plasma-wall outer gap, longer plasma elongation, lower low-hybrid wave heating power and electron cyclotron resonance heating power favor the occurrence of clustered grassy ELMs. Further studies indicate that the generation of clustered grassy ELMs could be correlated with the lower electron temperature in the bulk plasma.
资助项目	National Magnetic Confinement Fusion Energy R&D Program of China[2017YFE0301300] ; National Natural Science Foundation of China[12005257] ; National Natural Science Foundation of China[11905143] ; Key Research Program of Frontier Sciences ; CASHIPS Director's Fund[YZJJ2020QN13] ; CAS ; China Postdoctoral Science Foundation[2020M671913]
WOS关键词	GOOD CONFINEMENT ; ASDEX UPGRADE ; MODES ; PLASMAS ; REGIME
WOS研究方向	Physics
语种	英语
出版者	IOP PUBLISHING LTD
WOS记录号	WOS:000679534100001
资助机构	National Magnetic Confinement Fusion Energy R&D Program of China ; National Natural Science Foundation of China ; Key Research Program of Frontier Sciences ; CASHIPS Director's Fund ; CAS ; China Postdoctoral Science Foundation
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/123179]
专题	中国科学院合肥物质科学研究院
通讯作者	Yang, Qingquan; Xu, Guosheng
作者单位	1.Univ Sci & Technol China, Hefei 230026, Peoples R China 2.Anhui Univ, Hefei 230601, Peoples R China 3.Chinese Acad Sci, Inst Plasma Phys, Hefei Inst Phys Sci, Hefei 230031, Peoples R China 4.Hefei Comprehens Natl Sci Ctr, Inst Energy, Hefei 230031, Peoples R China
推荐引用方式 GB/T 7714	Ding, Genfan,Yang, Qingquan,Xu, Guosheng,et al. Comparison of natural grassy ELM behavior in favorable/unfavorable B (t) in EAST[J]. PLASMA SCIENCE & TECHNOLOGY,2021,23.
APA	Ding, Genfan.,Yang, Qingquan.,Xu, Guosheng.,Lin, Xin.,Ye, Yang.,...&Wang, Liang.(2021).Comparison of natural grassy ELM behavior in favorable/unfavorable B (t) in EAST.PLASMA SCIENCE & TECHNOLOGY,23.
MLA	Ding, Genfan,et al."Comparison of natural grassy ELM behavior in favorable/unfavorable B (t) in EAST".PLASMA SCIENCE & TECHNOLOGY 23(2021).