Minor disruptions triggered by supersonic molecular beam injection on J-TEXT tokamak
文献类型：期刊论文
| 作者 | Jiang, Z. H.3; Yang, T. T.3; Yuan, J. J.3; Li, C. H.3; Ye, X.3; Huang, J.3 ; Liang, Y.3,4,5; Izzo, V. A.6,7; Huang, M. X.3; Tong, R. H.3
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| 刊名 | NUCLEAR FUSION
 |
| 出版日期 | 2020-06-01 |
| 卷号 | 60 |
| 关键词 | disruption mitigation MHD instability supersonic molecular beam injection (SMBI) |
| ISSN号 | 0029-5515 |
| DOI | 10.1088/1741-4326/ab7d19 |
| 通讯作者 | Liang, Y.(y.liang@fz-juelich.de) |
| 英文摘要 | 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. |
| WOS关键词 | DENSITY LIMIT DISRUPTIONS ; MITIGATION ; IMPURITY |
| 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] |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000529244500001 |
| 出版者 | IOP PUBLISHING LTD |
| 资助机构 | National Key R&D Program of China ; National Natural Science Foundation of China |
| 源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/103407]  |
| 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.Univ Sci & Technol China, CAS Key Lab Geospace Environm, Hefei 230026, Anhui, Peoples R China 2.Chengdu Univ, Chengdu 610106, Peoples R China 3.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 4.Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Peoples R China 5.Forschungszentrum Julich, Inst Energie & Klimaforsch Plasmaphys, D-52425 Julich, Germany 6.Fiat Lux, San Diego, CA USA 7.9500 Gilman Dr, La Jolla, CA 92093 USA 8.Univ Sci & Technol China, Dept Engn & Appl Phys, Hefei 230026, Anhui, Peoples R China |
| 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). |
入库方式： OAI收割
来源：合肥物质科学研究院
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