Application of three-dimensional MHD equilibrium calculation coupled with plasma response to island divertor experiments on J-TEXT

Wei XIE; Yunfeng LIANG; Zhonghe JIANG; Yasuhiro SUZUKI; Li LI; Jiankun HUA; Jie HUANG; Alexander KNIEPS; Song ZHOU; Feiyue MAO; Xin XU; Keze LI; Yutong YANG; Ziyang JIN; Cunkai LI; the J-TEXT Team

doi:10.1088/2058-6272/ad70e1

Plasma Science and Technology > 2024 > 26(11): 115104. > DOI: 10.1088/2058-6272/ad70e1

Wei XIE, Yunfeng LIANG, Zhonghe JIANG, Yasuhiro SUZUKI, Li LI, Jiankun HUA, Jie HUANG, Alexander KNIEPS, Song ZHOU, Feiyue MAO, Xin XU, Keze LI, Yutong YANG, Ziyang JIN, Cunkai LI, the J-TEXT Team. Application of three-dimensional MHD equilibrium calculation coupled with plasma response to island divertor experiments on J-TEXT[J]. Plasma Science and Technology, 2024, 26(11): 115104. DOI: 10.1088/2058-6272/ad70e1

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Application of three-dimensional MHD equilibrium calculation coupled with plasma response to island divertor experiments on J-TEXT

1.
State Key Laboratory of Advanced Electromagnetic Technology, International Joint Research Laboratory of Magnetic Confinement Fusion and Plasma Physics, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, People’s Republic of China
2.
Forschungszentrum Jülich GmbH, Institut für Energie- und Klimaforschung—Plasmaphysik, Partner of the Trilateral Euregio Cluster (TEC), Jülich 52425, Germany
3.
Graduate School of Advanced Science and Engineering, Hiroshima University, Higashi-Hiroshima 739-8527, Japan
4.
College of Science, Donghua University, Shanghai 201620, People’s Republic of China
5.
Southwestern Institute of Physics, Chengdu 610041, People’s Republic of China
6.
See the author list of “Wang N et al 2022 Advances in physics and applications of 3D magnetic perturbations on the J TEXT tokamak Nucl. Fusion 62 042016”

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Author Bio:
Yunfeng LIANG: y.liang@fz-juelich.de
Corresponding author:
Yunfeng LIANG, y.liang@fz-juelich.de
Received Date: May 21, 2024
Revised Date: August 10, 2024
Accepted Date: August 18, 2024
Available Online: August 19, 2024
Published Date: October 16, 2024

Graphical Abstract

Abstract

Abstract

Three-dimensional (3D) equilibrium calculations, including the plasma rotation shielding effect to resonant magnetic perturbations (RMPs) produced by the island divertor (ID) coils, were carried out using the HINT and MARS-F codes on J-TEXT. Validation of 3D equilibrium calculations with experimental observations demonstrates that the shielding effect will prevent the penetration of the edge m/n = 3/1 mode component when the ID coil current is 4 kA, while change the size of magnetic islands once the current exceeds the penetration threshold. This indicates that equilibrium calculations including the plasma rotation shielding effect to RMPs can lead to better agreements with experimental observations compared to the vacuum approximation method. Additionally, the magnetic topology at the boundary undergoes changes, impacting the interaction between the plasma and the target plate. These results may be important in understanding RMP effects on edge transport and magnetohydrodynamic (MHD) instability control, as well as divertor heat and particle flux distribution control.
- magnetic topology,
- resonant magnetic perturbation,
- 3D equilibrium,
- shielding effect

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Acknowledgments

The authors are very grateful for the help of J-TEXT team. This work was supported by the National Magnetic Confinement Fusion Energy R & D Program of China (No. 2018YFE0309101) and National Natural Science Foundation of China (Nos. 12305243 and 51821005).

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Application of three-dimensional MHD equilibrium calculation coupled with plasma response to island divertor experiments on J-TEXT

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