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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
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| 2021-11-01 | |
| Source Publication | NUCLEAR FUSION
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| ISSN | 0029-5515 |
| Corresponding Author | Xu, G. S.(gsxu@ipp.ac.cn) ; Tao, Y. Q.(yuqiang.tao@ipp.ac.cn) |
| Abstract | Simultaneous 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. |
| Keyword | ELM-control radiative divertor impurity radiative condensation instability EAST |
| DOI | 10.1088/1741-4326/ac26eb |
| WOS Keyword | CONDENSATION INSTABILITY ; H-MODE ; DETACHMENT ; TUNGSTEN ; MARFES ; WAVES ; JET |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Fusion Energy Program[2019YFE03030000] ; National Natural Science Foundation of China[U19A20113] ; National Nature Science Foundation of China[11905143] |
| Funding Organization | National Fusion Energy Program ; National Natural Science Foundation of China ; National Nature Science Foundation of China |
| WOS Research Area | Physics |
| WOS Subject | Physics, Fluids & Plasmas |
| WOS ID | WOS:000706472300001 |
| Publisher | IOP Publishing Ltd |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.hfcas.ac.cn:8080/handle/334002/125482 |
| Collection | 中国科学院合肥物质科学研究院 |
| Corresponding Author | Xu, G. S.; Tao, Y. Q. |
| Affiliation | 1.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 Affilication | Chinese Academy of Sciences, Institute of Plasma Physics, Hefei 230031, Anhui, Peoples R China |
| Corresponding Author Affilication | Chinese 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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