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Comparison of natural grassy ELM behavior in favorable/unfavorable B (t) in EAST
Ding, Genfan1,2; Yang, Qingquan2; Xu, Guosheng2; Lin, Xin2,3; Ye, Yang4; Chen, Ran2; Wang, Yumin2; Zang, Qing2; Lan, Heng2; Chen, Liang2; Lu, Zhikang2,3; Wang, Yifeng2; Meng, Lingyi2,3; Wang, Liang2
2021-09-01
Source PublicationPLASMA SCIENCE & TECHNOLOGY
ISSN1009-0630
Corresponding AuthorYang, Qingquan(yangqq@ipp.ac.cn) ; Xu, Guosheng(gsxu@ipp.ac.cn)
AbstractThe 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.
Keywordgrassy ELM favorable and unfavorable B (t) clustered ELM EAST
DOI10.1088/2058-6272/ac061b
WOS KeywordGOOD CONFINEMENT ; ASDEX UPGRADE ; MODES ; PLASMAS ; REGIME
Indexed BySCI
Language英语
Funding ProjectNational 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]
Funding OrganizationNational 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
WOS Research AreaPhysics
WOS SubjectPhysics, Fluids & Plasmas
WOS IDWOS:000679534100001
PublisherIOP PUBLISHING LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.hfcas.ac.cn:8080/handle/334002/123180
Collection中国科学院合肥物质科学研究院
Corresponding AuthorYang, Qingquan; Xu, Guosheng
Affiliation1.Anhui Univ, Hefei 230601, Peoples R China
2.Chinese Acad Sci, Inst Plasma Phys, Hefei Inst Phys Sci, Hefei 230031, Peoples R China
3.Univ Sci & Technol China, Hefei 230026, Peoples R China
4.Hefei Comprehens Natl Sci Ctr, Inst Energy, Hefei 230031, Peoples R China
First Author AffilicationChinese Academy of Sciences, Institute of Plasma Physics, Hefei 230031, Anhui, Peoples R China
Corresponding Author AffilicationChinese Academy of Sciences, Institute of Plasma Physics, Hefei 230031, Anhui, Peoples R China
Recommended Citation
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).
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