Study on pedestal fluctuations in H-modes without large ELMs during the transition to a detached tungsten divertor in EAST

doi:10.1088/1741-4326/ac33c7

HFCAS OpenIR

	Study on pedestal fluctuations in H-modes without large ELMs during the transition to a detached tungsten divertor in EAST
	Ye, Y.1,2; Chen, R.2 ; Xu, G. S.2 ; Wang, L.2 ; Guo, H. Y.2,3; Zhou, C.4 ; Wang, Y. F.2; Xu, J. C.5; Lin, X.2,4; Wang, Y. M.2; Zang, Q.2 ; Duan, Y. M.2; Zhang, L.2 ; Liu, J. B.2; Wu, X. Q.2; Yang, Q. Q.2; Li, G. S.2; Wan, B. N.3
	2021-12-01
发表期刊	NUCLEAR FUSION
ISSN	0029-5515
通讯作者	Chen, R.(chenran@ipp.ac.cn) ; Xu, G. S.(gsxu@ipp.ac.cn)
摘要	Simultaneous control of the damaging erosion induced by the transient and steady-state heat/particle fluxes on the divertor target material is one of the critical issues for next-step magnetic fusion devices. H-mode operation without large edge-localized modes has been achieved in EAST with an ITER-like tungsten divertor, while being compatible with the partial and pronounced detachment in divertor, via either ramping-up of bulk density or injection of low/high-Z impurities. The pedestal characteristics during the transition from the attached to the detached divertor and the reversed transition (detached to attached) under different detachment methods are studied in detail, where the evolution of multi fluctuating structures commonly residing in the H-mode pedestal of EAST (edge coherent mode (ECM), magnetic coherent mode (MCM) and high frequency mode (HFM)) is highlighted. In addition, the possible mechanisms that affect the behavior of these modes, such as the pedestal pressure gradient and the collisionality, have also been discussed. The radial structures of ECM, MCM and HFM are detected, for the first time, in one discharge. Relevant research may provide contribution to obtaining an integrated small/no ELM and radiative divertor scenario in the next step.
关键词	pedestal detached divertor small no-ELM fluctuating structures
DOI	10.1088/1741-4326/ac33c7
关键词[WOS]	EDGE LOCALIZED MODES ; PLASMA DETACHMENT ; ASDEX UPGRADE ; DIII-D ; CONFINEMENT ; BEHAVIOR ; PROGRESS ; REGIME
收录类别	SCI
语种	英语
资助项目	National Fusion Energy Program[2019YFE03030000] ; National Natural Science Foundation of China[11905143] ; National Natural Science Foundation of China[12005263] ; National Natural Science Foundation of China[11805136] ; Key Research Program of Frontier Sciences, CAS[QYZDB-SSW-SLH001] ; international partnership program of Chinese academy of sciences[Y16YZ17271] ; National Key R&D Program of China[2017YFE0301300] ; AHNSF[808085J07] ; Institute of Energy, Hefei Comprehensive National Science Center[19KZS205] ; users with Excellence Program of Hefei Science Center[CAS 2020HSC-UE008]
项目资助者	National Fusion Energy Program ; National Natural Science Foundation of China ; Key Research Program of Frontier Sciences, CAS ; international partnership program of Chinese academy of sciences ; National Key R&D Program of China ; AHNSF ; Institute of Energy, Hefei Comprehensive National Science Center ; users with Excellence Program of Hefei Science Center
WOS研究方向	Physics
WOS类目	Physics, Fluids & Plasmas
WOS记录号	WOS:000719572700001
出版者	IOP Publishing Ltd
引用统计	被引频次：5[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.hfcas.ac.cn:8080/handle/334002/126669
专题	中国科学院合肥物质科学研究院
通讯作者	Chen, R.; Xu, G. S.
作者单位	1.Hefei Comprehens Natl Sci Ctr, Inst Energy, Hefei 230031, Peoples R China 2.Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Peoples R China 3.Gen Atom, POB 85608, San Diego, CA 92186 USA 4.Univ Sci & Technol China, Hefei 230026, Peoples R China 5.Anhui Univ Sci & Technol, Sch Mech Engn, Huainan 232001, Peoples R China
第一作者单位	中科院等离子体物理研究所
通讯作者单位	中科院等离子体物理研究所
推荐引用方式 GB/T 7714	Ye, Y.,Chen, R.,Xu, G. S.,et al. Study on pedestal fluctuations in H-modes without large ELMs during the transition to a detached tungsten divertor in EAST[J]. NUCLEAR FUSION,2021,61.
APA	Ye, Y..,Chen, R..,Xu, G. S..,Wang, L..,Guo, H. Y..,...&Wan, B. N..(2021).Study on pedestal fluctuations in H-modes without large ELMs during the transition to a detached tungsten divertor in EAST.NUCLEAR FUSION,61.
MLA	Ye, Y.,et al."Study on pedestal fluctuations in H-modes without large ELMs during the transition to a detached tungsten divertor in EAST".NUCLEAR FUSION 61(2021).