Interaction of dynamic magnetic island with bootstrap current in toroidal plasma

Wenjin Chen; Min Zhang; Zhiwei Ma

doi:10.1088/2058-6272/adac91

Plasma Science and Technology > 2025 > Accepted Manuscript > DOI: 10.1088/2058-6272/adac91

Wenjin Chen, Min Zhang, Zhiwei Ma. Interaction of dynamic magnetic island with bootstrap current in toroidal plasma[J]. Plasma Science and Technology. DOI: 10.1088/2058-6272/adac91

Citation:

Wenjin Chen, Min Zhang, Zhiwei Ma. Interaction of dynamic magnetic island with bootstrap current in toroidal plasma[J]. Plasma Science and Technology. DOI: 10.1088/2058-6272/adac91

Citation:

Wenjin Chen, Min Zhang, Zhiwei Ma. Interaction of dynamic magnetic island with bootstrap current in toroidal plasma[J]. Plasma Science and Technology. DOI: 10.1088/2058-6272/adac91

PDF (2129 KB)

Interaction of dynamic magnetic island with bootstrap current in toroidal plasma

Zhejiang University

More Information

Received Date: October 16, 2024
Revised Date: January 19, 2025
Accepted Date: January 20, 2025
Available Online: January 21, 2025

Graphical Abstract

Abstract

Abstract

Interaction of dynamic magnetic island with bootstrap current in toroidal plasmas is investigated based on the ﬁrst principles of kinetic simulation. The perturbed magnetic and electric fields associated with the dynamic magnetic island are calculated from a three-dimensional toroidal MHD code (CLT), instead of artificial imposed magnetic island perturbation. Inside the static magnetic island, the bootstrap current decreases as expected with the effective collision frequency. The radial electric field Er associated with dynamic island could cause the E×B drift, which can noticeably modify the bootstrap current distribution. If the bootstrap current turns on when the tearing mode saturates, the widths of magnetic islands ascend rapidly and saturate again for both static and dynamic cases. But the saturated island width of the dynamic case is smaller than that of the static case because the magnetic islands in the dynamic case is rotated due to strong asymmetric distribution of the bootstrap current in the vicinity of the X-points.
- bootstrap current,
- kinetic simulation,
- magnetic island,
- Tokamak

FullText(HTML)

References (0)

[1]	Xiaolong ZHANG (张晓龙), Zhifeng CHENG (程芝峰), Song ZHOU (周松), Yunfeng LIANG (梁云峰), Wei YAN (严伟), Nengchao WANG (王能超), Xiaoyi ZHANG (张霄翼), Zhonghe JIANG (江中和), Zhoujun YANG (杨州军), Xin XU (徐鑫), Da LI (李达), Qiong LI (李琼), Xiaodong LIN (林晓东), Yonghua DING (丁永华), Zhongyong CHEN (陈忠勇), Zhipeng CHEN (陈志鹏), J-TEXT Team. Effect of edge magnetic island on carbon screening in the J-TEXT tokamak[J]. Plasma Science and Technology, 2021, 23(12): 125101. DOI: 10.1088/2058-6272/ac1dfc
[2]	Wei WANG (王玮), Zhengxiong WANG (王正汹), Jiquan LI (李继全), Yasuaki KISHIMOTO, Jiaqi DONG (董家齐), Shu ZHENG (郑殊). Magnetic-island-induced ion temperature gradient mode: Landau damping, equilibrium magnetic shear and pressure flattening effects[J]. Plasma Science and Technology, 2018, 20(7): 75101-075101. DOI: 10.1088/2058-6272/aab48f
[3]	H R MIRZAEI, R AMROLLAHI. Design, simulation and construction of the Taban tokamak[J]. Plasma Science and Technology, 2018, 20(4): 45103-045103. DOI: 10.1088/2058-6272/aaa669
[4]	Hailong GAO (高海龙), Tao XU (徐涛), Zhongyong CHEN (陈忠勇), Ge ZHUANG (庄革). Plasma equilibrium calculation in J-TEXT tokamak[J]. Plasma Science and Technology, 2017, 19(11): 115101. DOI: 10.1088/2058-6272/aa7f26
[5]	KE Xin (柯新), CHEN Zhipeng (陈志鹏), BA Weigang (巴为刚), SHU Shuangbao (舒双宝), GAO Li (高丽), ZHANG Ming (张明), ZHUANG Ge (庄革). The Construction of Plasma Density Feedback Control System on J-TEXT Tokamak[J]. Plasma Science and Technology, 2016, 18(2): 211-216. DOI: 10.1088/1009-0630/18/2/20
[6]	LIANG Shaoyong (梁绍勇), XIAO Bingjia (肖炳甲), ZHANG Yang (张洋), WANG Linfang (王淋芳), YUAN Qiping (袁旗平), LUO Zhengping (罗正平), SHI Tonghui (石同辉), TI Ang (提昂). Real-Time Detection for Magnetic Island of Neoclassical Tearing Mode in EAST Plasma Control System[J]. Plasma Science and Technology, 2016, 18(2): 197-201. DOI: 10.1088/1009-0630/18/2/17
[7]	QU Hongpeng (曲洪鹏). Ion-Banana-Orbit-Width Effect on Bootstrap Current for Small Magnetic Islands[J]. Plasma Science and Technology, 2013, 15(9): 852-856. DOI: 10.1088/1009-0630/15/9/03
[8]	HONG Rongjie (洪荣杰), YANG Zhongshi (杨钟时), NIU Guojian (牛国鉴), LUO Guangnan (罗广南). A Molecular Dynamics Study on the Dust-Plasma/Wall Interactions in the EAST Tokamak[J]. Plasma Science and Technology, 2013, 15(4): 318-322. DOI: 10.1088/1009-0630/15/4/03
[9]	HAN Xiang (韩翔), LING Bili (凌必利), GAO Xiang (高翔), LIU Yong (刘永), TI Ang (提昂), LI Erzhong (李二众), XU Liqing (徐立清), WANG Yumin (王嵎民). Measurement of Magnetic Island Width by Multi-Channel ECE Radiometer on HT-7 Tokamak[J]. Plasma Science and Technology, 2013, 15(3): 217-220. DOI: 10.1088/1009-0630/15/3/05
[10]	GUO Wei, WANG Shaojie, LI Jiangang. Vacuum Poloidal Magnetic Field of Tokamak in Alternating-Current Operation[J]. Plasma Science and Technology, 2010, 12(6): 657-660.