Minor disruptions triggered by supersonic molecular beam injection on J-TEXT tokamak

doi:10.1088/1741-4326/ab7d19

HFCAS OpenIR

	Minor disruptions triggered by supersonic molecular beam injection on J-TEXT tokamak
	Jiang, Z. H.1; Yang, T. T.1; Yuan, J. J.1; Li, C. H.1; Ye, X.1; Huang, J.1 ; Liang, Y.1,2,3; Izzo, V. A.4,5; Huang, M. X.1; Tong, R. H.1; Huang, Y.1; Cai, Q. X.1; Yan, X. T.6,7; Zhu, L. Z.1; Yang, Z. J.1; Ding, Y. H.1; Zhu, P.1 ; Chen, Z. Y.1,8
	2020-06-01
发表期刊	NUCLEAR FUSION
ISSN	0029-5515
通讯作者	Liang, Y.(y.liang@fz-juelich.de)
摘要	Disruption mitigation experiments with supersonic molecular beam injection of argon gas on J-TEXT were conducted to explore the evolution process during multistage minor disruption. The corresponding numerical simulation was performed using a 3D magnetohydrodynamic (MHD) code, namely, NIMROD (Sovinec et al 2004 J. Comput. Phys. 195 355). The experimental and numerical simulation results are shown in the following. The central plasma temperature decreases to less than tens of electovolts after a relatively long period of multistage thermal collapse. Different MHD instability modes appear when the impurity cold front propagates toward the q = 2 surface. During the burst of MHD activity and central plasma thermal collapse, the heat flux is transferred from the core region to the plasma boundary. Further numerical simulation results show that the MHD process is accompanied by a significant increase in the core-oriented spread of impurities through the q = 2 surface. During the transition stage from the minor disruption to the major disruption, the high order modes play an important role and the magnitude of the n = 3 growth rate is even larger than that of the n = 1 or n = 2 mode. What seems to separate major from minor disruptions is that in a minor disruption, a single MHD crash is not sufficient to cause a full radiative collapse.
关键词	disruption mitigation MHD instability supersonic molecular beam injection (SMBI)
DOI	10.1088/1741-4326/ab7d19
关键词[WOS]	DENSITY LIMIT DISRUPTIONS ; MITIGATION ; IMPURITY
收录类别	SCI
语种	英语
资助项目	National Key R&D Program of China[2018YFE0309100] ; National Natural Science Foundation of China[11575068] ; National Natural Science Foundation of China[11775089]
项目资助者	National Key R&D Program of China ; National Natural Science Foundation of China
WOS研究方向	Physics
WOS类目	Physics, Fluids & Plasmas
WOS记录号	WOS:000529244500001
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/334002/103408
专题	中国科学院合肥物质科学研究院
通讯作者	Liang, Y.
作者单位	1.Huazhong Univ Sci & Technol, Sch Elect & Elect Engn, Int Joint Res Lab Magnet Confinement Fus & Plasma, State Key Lab Adv Electromagnet Engn & Technol, Wuhan 430074, Peoples R China 2.Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Peoples R China 3.Forschungszentrum Julich, Inst Energie & Klimaforsch Plasmaphys, D-52425 Julich, Germany 4.Fiat Lux, San Diego, CA USA 5.9500 Gilman Dr, La Jolla, CA 92093 USA 6.Univ Sci & Technol China, CAS Key Lab Geospace Environm, Hefei 230026, Anhui, Peoples R China 7.Univ Sci & Technol China, Dept Engn & Appl Phys, Hefei 230026, Anhui, Peoples R China 8.Chengdu Univ, Chengdu 610106, Peoples R China
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	Jiang, Z. H.,Yang, T. T.,Yuan, J. J.,et al. Minor disruptions triggered by supersonic molecular beam injection on J-TEXT tokamak[J]. NUCLEAR FUSION,2020,60.
APA	Jiang, Z. H..,Yang, T. T..,Yuan, J. J..,Li, C. H..,Ye, X..,...&Chen, Z. Y..(2020).Minor disruptions triggered by supersonic molecular beam injection on J-TEXT tokamak.NUCLEAR FUSION,60.
MLA	Jiang, Z. H.,et al."Minor disruptions triggered by supersonic molecular beam injection on J-TEXT tokamak".NUCLEAR FUSION 60(2020).