Realization of divertor configuration discharge in J-TEXT tokamak

Zhipeng CHEN; Lizhi ZHU; Xin XU; Wei ZHENG; Ming ZHANG; Li GAO; Minghui XIA; Jie YANG; Mingchong ZHU; Zhigang HAO; Shaodong JIAO; Zhifeng CHENG; Zhoujun YANG; Xiaoqing ZHANG; Zhongyong CHEN; Nengchao WANG; Yonghua DING; Ge ZHUANG; Kenneth W GENTLE; Yunfeng LIANG; Yuan PAN; the J-TEXT Team

doi:10.1088/2058-6272/aca0dc

Plasma Science and Technology > 2022 > 24(12): 124008. > DOI: 10.1088/2058-6272/aca0dc

Zhipeng CHEN, Lizhi ZHU, Xin XU, Wei ZHENG, Ming ZHANG, Li GAO, Minghui XIA, Jie YANG, Mingchong ZHU, Zhigang HAO, Shaodong JIAO, Zhifeng CHENG, Zhoujun YANG, Xiaoqing ZHANG, Zhongyong CHEN, Nengchao WANG, Yonghua DING, Ge ZHUANG, Kenneth W GENTLE, Yunfeng LIANG, Yuan PAN, the J-TEXT Team. Realization of divertor configuration discharge in J-TEXT tokamak[J]. Plasma Science and Technology, 2022, 24(12): 124008. DOI: 10.1088/2058-6272/aca0dc

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Realization of divertor configuration discharge in J-TEXT tokamak

1.
International Joint Research Laboratory of Magnetic Confinement Fusion and Plasma Physics, State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
2.
Department of Engineering and Applied Physics School of Physical Sciences, University of Science and Technology of China, Hefei 230026, People's Republic of China
3.
Institute for Fusion Studies, University of Texas, Austin TX 78712, United States of America
4.
Forschungszentrum Jülich GmbH, Institut für Energie- und Klimaforschung—Plasmaphysik, Partner of the Trilateral Euregio Cluster (TEC), Jülich 52425, Germany
5.
Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, People's Republic of China

More Information

Corresponding author:
Zhipeng CHEN, E-mail: zpchen@hust.edu.cn
Received Date: August 14, 2022
Revised Date: September 25, 2022
Accepted Date: November 06, 2022
Available Online: December 05, 2023
Published Date: December 12, 2022

Graphical Abstract

Abstract

Abstract

To extend the operation region of the Joint-Texas Experimental tokamak (J-TEXT) to the divertor configuration and even the H-mode, the divertor configuration discharge has been realized for the first time in the J-TEXT tokamak. Along with the establishment of a power supply for the divertor configuration, the construction of relevant diagnostics, and the installation of the divertor target on the high-field side, divertor discharge has been tested. Through the equilibrium calculation and position stability analysis, the control strategy has evolved to be more stable. High-density experiments and auxiliary heating experiments have been carried out on the divertor configuration. The special midplane single-null (MSN) divertor configuration is shown to be more stable than the limiter configuration in the density limit condition and can reach a higher density in the experiment. In the ECRH experiment, the power injection enhances the electron temperature and density, while more heat outflux is loaded on the divertor target tiles and causes more intensive recycling and impurity release. The future plan for the divertor configuration operation in the J-TEXT tokamak is also included.
- tokamak,
- high-field side,
- midplane single null,
- divertor

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Acknowledgments

The authors would like to thank the members of the J-TEXT team for their assistance in the experiment. This work was supported by the National MCF Energy R&D Program of China (Nos. 2018YFE0301104 and 2018YFE0310300), and National Natural Science Foundation of China (No. 51821005).

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1.	Xie, W., Liang, Y., Jiang, Z. et al. Application of three-dimensional MHD equilibrium calculation coupled with plasma response to island divertor experiments on J-TEXT. Plasma Science and Technology, 2024, 26(11): 115104. DOI:10.1088/2058-6272/ad70e1
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