Effect of the toroidal flow and flow shear on the m/n=2/1 tearing mode in J-TEXT tokamak

Shao Junren; Liu Hai; Xu Yuhong; Chen Zhipeng; Wang Tong; Cheng Jun; Wang Xianqu; Huang Jie; Liu Haifeng; Zhang Xin; Xu Kangzhong; Tang Changjian

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Effect of the toroidal flow and flow shear on the m/n=2/1 tearing mode in J-TEXT tokamak

机译：环形流动和流动剪切对J-Text Tokamak中M / N = 2/1撕裂模式的影响

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摘要

The effect of the toroidal flow and flow shear on the m/n = 2/1 tearing mode (TM) has been investigated in J-TEXT tokamak, where m and n are the poloidal and toroidal mode numbers. It is found that the toroidal flow increment is linearly modulated by the bias current/return current. The frequency of the 2/1 TM is also found to be proportional to the toroidal flow during the bias phase, which is consistent with the theoretical expectation. The electron diamagnetic drift frequency is almost constant before and during the bias phase. Moreover, the statistical analysis shows that the saturated island width of the TM is more correlated to the toroidal flow amplitude than the flow shear, which reveals that the effect of the TM depends on the magnitude of the toroidal flow rather than the flow shear. This result may illustrate the process of the 2/1 TM controlled by the electrode biasing, and suggests that changing the magnitude of toroidal flow is a possible method for stabilizing the TM.

机译：在J-TEXT托卡马克中，研究了环向流和流剪切对m/n=2/1撕裂模（TM）的影响，其中m和n是极向模和环向模数。结果表明，偏置电流/回流电流对环向流量增量有线性调节作用。在偏置阶段，2/1 TM的频率也与环形流成正比，这与理论预期一致。在偏置阶段之前和期间，电子的抗磁漂移频率几乎是恒定的。此外，统计分析表明，TM的饱和岛宽度与环形流振幅的相关性比与流切变的相关性更大，这表明TM的影响取决于环形流的大小，而不是流切变。这一结果可以说明由电极偏压控制的2/1 TM的过程，并表明改变环形流的大小是稳定TM的可能方法。

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来源
《Plasma physics and controlled fusion》 |2021年第6期|共8页
作者
Shao Junren; Liu Hai; Xu Yuhong; Chen Zhipeng; Wang Tong; Cheng Jun; Wang Xianqu; Huang Jie; Liu Haifeng; Zhang Xin; Xu Kangzhong; Tang Changjian;
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作者单位

Southwest Jiaotong Univ Inst Fus Sci Sch Phys Sci &

Technol Chengdu 610031 Peoples R China;

Southwest Jiaotong Univ Inst Fus Sci Sch Phys Sci &

Technol Chengdu 610031 Peoples R China;

Southwest Jiaotong Univ Inst Fus Sci Sch Phys Sci &

Technol Chengdu 610031 Peoples R China;

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;

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;

Southwest Jiaotong Univ Inst Fus Sci Sch Phys Sci &

Technol Chengdu 610031 Peoples R China;

Southwest Jiaotong Univ Inst Fus Sci Sch Phys Sci &

Technol Chengdu 610031 Peoples R China;

Southwest Jiaotong Univ Inst Fus Sci Sch Phys Sci &

Technol Chengdu 610031 Peoples R China;

Southwest Jiaotong Univ Inst Fus Sci Sch Phys Sci &

Technol Chengdu 610031 Peoples R China;

Southwest Jiaotong Univ Inst Fus Sci Sch Phys Sci &

Technol Chengdu 610031 Peoples R China;

Southwest Jiaotong Univ Inst Fus Sci Sch Phys Sci &

Technol Chengdu 610031 Peoples R China;

Southwest Jiaotong Univ Inst Fus Sci Sch Phys Sci &

Technol Chengdu 610031 Peoples R China;

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原文格式 PDF
正文语种 eng
中图分类等离子体物理学;
关键词
toroidal flow; flow shear; tearing mode; electrode biasing;

机译：环形流动;流动剪切;撕裂模式;电极偏置;

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1. Effects of resonant magnetic perturbation on the instability of single tearing mode with non-shear flow [J] . Le Wang, Ming Yang, Wen-Bin Lin 中国物理：英文版 . 2019,第001期
2. Effect of shear equilibrium flow in Tokamak plasma on resistive wall modes [J] . Li Li, Liu Yue 中国物理：英文版 . 2013,第007期
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6. Influence of the poloidal equilibrium flow and flow shear on the tearing mode instabilities in tokamak plasmas [J] . Ming Yue, Zhou Deng Physics of plasmas . 2017,第1期

机译：球形平衡流量和流量剪切对托卡马克等离子体撕裂模式稳定性的影响
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机译：磁性剪切由于Tokamaks的局部环形流动剪切
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机译：环形等离子体中不稳定撕裂模式产生的有限环形流动
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机译：托卡马克环形几何撕裂模式的模拟
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机译：紧凑型环形混合恒星机的剪切流和稳定性的测量与修正
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机译：三角变形轴对称环面坐标系中具有非平行流的托卡马克平衡
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Effect of the toroidal flow and flow shear on the m/n=2/1 tearing mode in J-TEXT tokamak

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