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Sustained edge-localized-modes suppression and radiative divertor with an impurity-driven instability in tokamak plasmas
Ye, Y.1,2; Xu, G. S.1; Tao, Y. Q.1; Chen, R.1; Wang, L.1; Guo, H. Y.3; Wang, H. Q.3; Li, K. D.1; Meng, L. Y.1; Yang, Q. Q.1; Wang, Y. F.1; Lin, X.1; Sun, Z.4; Wu, K.1; Yuan, Q. P.1; Xu, J. C.5; Duan, Y. M.1; Zhang, L.1; Liu, H. Q.1; Wan, B. N.1
2021-11-01
Source PublicationNUCLEAR FUSION
ISSN0029-5515
Corresponding AuthorXu, G. S.(gsxu@ipp.ac.cn) ; Tao, Y. Q.(yuqiang.tao@ipp.ac.cn)
AbstractSimultaneous control of the large edge localized modes (ELMs) and divertor heat fluxes in a metal wall environment is a critical issue for steady-state operation of a tokamak fusion reactors. Here we report a sustained ELM suppression scenario achieved in the EAST tokamak compatible with radiative divertor using different seeding impurity species over a wide range of conditions. A low-n mode appears, as manifested by the oscillations of a radiation front near the X-point. This mode appears to drive strong particle transport and tungsten exhaust, which is essential to the maintenance of the ELM-stable state. We have developed a model to explain the mode excitation, by coupling the impurity radiative condensation instability to drift waves, which could explain some characteristics of the low-n mode well. The low-n mode may offer a new ELM-stable scenario compatible with radiative divertor for future fusion reactors.
KeywordELM-control radiative divertor impurity radiative condensation instability EAST
DOI10.1088/1741-4326/ac26eb
WOS KeywordCONDENSATION INSTABILITY ; H-MODE ; DETACHMENT ; TUNGSTEN ; MARFES ; WAVES ; JET
Indexed BySCI
Language英语
Funding ProjectNational Fusion Energy Program[2019YFE03030000] ; National Natural Science Foundation of China[U19A20113] ; National Nature Science Foundation of China[11905143]
Funding OrganizationNational Fusion Energy Program ; National Natural Science Foundation of China ; National Nature Science Foundation of China
WOS Research AreaPhysics
WOS SubjectPhysics, Fluids & Plasmas
WOS IDWOS:000706472300001
PublisherIOP Publishing Ltd
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.hfcas.ac.cn:8080/handle/334002/125482
Collection中国科学院合肥物质科学研究院
Corresponding AuthorXu, G. S.; Tao, Y. Q.
Affiliation1.Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Peoples R China
2.Hefei Comprehens Natl Sci Ctr, Inst Energy, Hefei 230031, Peoples R China
3.Gen Atom, POB 85608, San Diego, CA 92186 USA
4.Princeton Plasma Phys Lab, 100 Stellarator Rd, Princeton, NJ 08540 USA
5.Anhui Univ Sci & Technol, Sch Mech Engn, Huainan 232001, 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
Ye, Y.,Xu, G. S.,Tao, Y. Q.,et al. Sustained edge-localized-modes suppression and radiative divertor with an impurity-driven instability in tokamak plasmas[J]. NUCLEAR FUSION,2021,61.
APA Ye, Y..,Xu, G. S..,Tao, Y. Q..,Chen, R..,Wang, L..,...&Wan, B. N..(2021).Sustained edge-localized-modes suppression and radiative divertor with an impurity-driven instability in tokamak plasmas.NUCLEAR FUSION,61.
MLA Ye, Y.,et al."Sustained edge-localized-modes suppression and radiative divertor with an impurity-driven instability in tokamak plasmas".NUCLEAR FUSION 61(2021).
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