Influence of electron cyclotron current drive on the pressure crashes caused by the 2/1 double tearing modes
文献类型：期刊论文
| 作者 | Li, J. Y.2; Zhang, W.1 ; Liu, Z. X.2; Ma, Z. W.1; Long, F. F.2; Liu, Y. J.3; Deng, C. C.2; Li, P. C.2; Yang, K. N.2; Yin, X. Y.2
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| 刊名 | PLASMA PHYSICS AND CONTROLLED FUSION
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| 出版日期 | 2024-11-01 |
| 卷号 | 66 |
| 关键词 | current drive double tearing mode pressure crash MHD instability |
| ISSN号 | 0741-3335 |
| DOI | 10.1088/1361-6587/ad802f |
| 通讯作者 | Zhang, W.(wzhang_ifts@zju.edu.cn) ; Liu, Z. X.(zxliu316@ustc.edu.cn) |
| 英文摘要 | A module with self-consistent evolution of driven current is developed and coupled with the resistive-MHD equations in the three-dimensional, toroidal, and nonlinear simulation code (CLT). The driven current equation is solved with a second-order accuracy symmetric scheme, which exhibits good conservation properties. With the new module, we find that the driven current can self-consistently concentrate inside the magnetic island when the parallel diffusion of the driven current is sufficiently large. The efficiency of the driven current on tearing mode suppression will then be much higher than those with stationary distributions. With the new module, the influence of electron cyclotron current drive (ECCD) on the nonlinear evolution of the 2/1 double tearing modes (DTMs) is investigated. When co-ECCD deposits on the outer resonant surface, the local magnetic shear is reduced, and the growth rates of the DTMs decrease; if ctr-ECCD deposits on the outer resonant surface, the local magnetic shear increases, and the DTMs become more unstable. However, things will be different if ECCD deposits on the inner resonant surface since the local magnetic shear is negative. The co-ECCD deposited on the inner resonant surface increases the negative shear and then promotes the growth of the DTMs; while the ctr-ECCD suppresses the DTMs. It is also found that the off-axis and central pressure crashes associated with the 2/1 DTMs can be converted to each other by properly depositing the driven current. To convert a central crash to an off-axis crash, the co-ECCD should be deposited on the outer resonant surface, or the ctr-ECCD deposited on the inner resonant surface. While, the co-ECCD should be deposited on the inner rational surface, or the ctr-ECCD deposited on the outer rational surface to convert an off-axis crash to a central crash. The co- or ctr-ECCD should be larger than a threshold for such transitions, and the threshold value is mainly determined by the location of the inner resonant surface. |
| WOS关键词 | INTERNAL TRANSPORT BARRIERS ; SHEAR PLASMAS ; STABILIZATION ; SUPPRESSION ; DISRUPTIONS ; INSTABILITY ; DISCHARGES ; ENERGY |
| 资助项目 | National Magnetic Confinement Fusion Program of Chinahttp://dx.doi.org/10.13039/501100013282[2019YFE03090200] ; National Magnetic Confinement Fusion Program of Chinahttp://dx.doi.org/10.13039/501100013282[2019YFE03090500] ; National Magnetic Confinement Fusion Program of Chinahttp://dx.doi.org/10.13039/501100013282[2019YFE03030004] ; National Magnetic Confinement Fusion Program of Chinahttp://dx.doi.org/10.13039/501100013282[2018YFE0311200] ; National Magnetic Confinement Fusion Program of China[12375224] ; National Magnetic Confinement Fusion Program of China[11975231] ; National Magnetic Confinement Fusion Program of China[12005185] ; National Magnetic Confinement Fusion Program of China[11835010] ; National Magnetic Confinement Fusion Program of China[12175277] ; National Natural Science Foundation of China[LDQ24A050001] ; Zhejiang Provincial Natural Science Foundation of China |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:001327898500001 |
| 出版者 | IOP Publishing Ltd |
| 资助机构 | National Magnetic Confinement Fusion Program of Chinahttp://dx.doi.org/10.13039/501100013282 ; National Magnetic Confinement Fusion Program of China ; National Natural Science Foundation of China ; Zhejiang Provincial Natural Science Foundation of China |
| 源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/135806]  |
| 专题 | 中国科学院合肥物质科学研究院 |
| 通讯作者 | Zhang, W.; Liu, Z. X. |
| 作者单位 | 1.Zhejiang Univ, Inst Fus Theory & Simulat, Dept Phys, Hangzhou 310027, Peoples R China 2.Univ Sci & Technol China, Dept Plasma Phys & Fus Engn, Hefei 230026, Anhui, Peoples R China 3.Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Anhui, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, J. Y.,Zhang, W.,Liu, Z. X.,et al. Influence of electron cyclotron current drive on the pressure crashes caused by the 2/1 double tearing modes[J]. PLASMA PHYSICS AND CONTROLLED FUSION,2024,66. |
| APA | Li, J. Y..,Zhang, W..,Liu, Z. X..,Ma, Z. W..,Long, F. F..,...&Liu, W. D..(2024).Influence of electron cyclotron current drive on the pressure crashes caused by the 2/1 double tearing modes.PLASMA PHYSICS AND CONTROLLED FUSION,66. |
| MLA | Li, J. Y.,et al."Influence of electron cyclotron current drive on the pressure crashes caused by the 2/1 double tearing modes".PLASMA PHYSICS AND CONTROLLED FUSION 66(2024). |
入库方式： OAI收割
来源：合肥物质科学研究院
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