Accelerating the magnetic island by the modulated resonant magnetic perturbation for the disruption avoidance on J-TEXT

Li, Da; Wang, Nengchao; Ding, Yonghua; Yu, Qingquan; Li, Mao; Hu, Qiming; He, Ying; Mao, Feiyue; Shen, Chengshuo; Jia, Ruo; Huang, Zhuo; Zhou, Song; Li, Shuhao; Bala, Abba Alhaji; Chen, Zhipeng; Chen, Zhongyong; Yang, Zhoujun; Rao, Bo; Jiang, Zhonghe; Yi, Lin; Yu, Kexun; Pan, Yuan

doi:10.1088/1361-6587/ac8b32

Title: Accelerating the magnetic island by the modulated resonant magnetic perturbation for the disruption avoidance on J-TEXT

Journal Article · Tue Aug 30 00:00:00 EDT 2022 · Plasma Physics and Controlled Fusion

DOI:https://doi.org/10.1088/1361-6587/ac8b32· OSTI ID:1889719

^[1];

^[1]; Ding, Yonghua ^[1]; Yu, Qingquan ^[2]; Li, Mao ^[3];

^[4]; He, Ying ^[1]; Mao, Feiyue ^[1]; Shen, Chengshuo ^[1]; Jia, Ruo ^[1];

^[1]; Zhou, Song ^[1];

^[1]; Bala, Abba Alhaji ^[5];

^[1];

^[1]; Rao, Bo ^[1];

^[1]; Yi, Lin ^[1] more »

Huazhong University of Science and Technology, Wuhan (China)
Max-Planck-Institut für Plasmaphysik, Garching (Germany)
China State Shipbuilding Corporation, Wuhan (China)
Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
Huazhong University of Science and Technology, Wuhan (China); Federal University Dutse, Jigawa (Nigeria)

We report the acceleration of the magnetic island rotation by the modulated resonant magnetic perturbation (MRMP) has been studied in J-TEXT tokamak experiments. After applying the MRMP, the phase difference between the tearing mode (TM) and MRMP, Δξ, oscillated near the effective phase difference, Δξ_eff, which was defined as the time averaged value of Δξ. When the Δξ_effwas closed to the—π/2, the MRMP only contributed an accelerating torque on the TM. As the result, the TM rotation frequency was increased by a few kilohertz for the optimized relative phase by small RMPs of the order of 10^-5 of the toroidal field and the locked mode induced disruption was avoided. It is found that the TM rotation could be increased to a higher frequency by applying a stronger MRMP. There is a negative sinusoidal relationship between TM frequency and Δξ_eff.

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Research Organization:: Princeton Plasma Physics Laboratory (PPPL), Princeton, NJ (United States)

Sponsoring Organization:: USDOE; National Key R&D Program; National Natural Science Foundation of China (NSFC); Central Universities

Contributing Organization:: J-TEXT Team

Grant/Contract Number:: 2018YFE0309101; 12075096; 12047526; 51821005; 2020kfyXJJS003

OSTI ID:: 1889719

Journal Information:: Plasma Physics and Controlled Fusion, Vol. 64, Issue 10; ISSN 0741-3335

Publisher:: IOP ScienceCopyright Statement

Country of Publication:: United States

Language:: English

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