Effect of resonant magnetic perturbation on boundary plasma turbulence and transport on J-TEXT tokamak

Ting WU (吴婷); Lin NIE (聂林); Min XU (许敏); Jie YANG (阳杰); Zhipeng CHEN (陈志鹏); Yuejiang SHI (石跃江); Nengchao WANG (王能超); Da LI (李达); Rui KE (柯锐); Yi YU (余羿); Shaobo GONG (龚少博); Ting LONG (龙婷); Yihang CHEN (陈逸航); Bing LIU (刘兵); J-TEXT Team

doi:10.1088/2058-6272/ab4369

Plasma Science and Technology > 2019 > 21(12): 125102. > DOI: 10.1088/2058-6272/ab4369

Ting WU (吴婷), Lin NIE (聂林), Min XU (许敏), Jie YANG (阳杰), Zhipeng CHEN (陈志鹏), Yuejiang SHI (石跃江), Nengchao WANG (王能超), Da LI (李达), Rui KE (柯锐), Yi YU (余羿), Shaobo GONG (龚少博), Ting LONG (龙婷), Yihang CHEN (陈逸航), Bing LIU (刘兵), J-TEXT Team. Effect of resonant magnetic perturbation on boundary plasma turbulence and transport on J-TEXT tokamak[J]. Plasma Science and Technology, 2019, 21(12): 125102. DOI: 10.1088/2058-6272/ab4369

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Effect of resonant magnetic perturbation on boundary plasma turbulence and transport on J-TEXT tokamak

¹ Southwestern Institute of Physics, Chengdu 610041, People's Republic of China
² 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
³ Department of Nuclear Engineering, Seoul National University, Seoul 08826, Republic of Korea
⁴ School of Physics, University of Science and Technology of China, Hefei 230026, People's Republic of China
⁵ Institute of Fusion Science, School of Physical Science and Technology, Southwest Jiaotong University, Chengdu 610031, People's Republic of China

Funds: This work is supported by the National Key Research & Development Programme of China (No. 2018YFE0309100, 2017YFE0301201), National Natural Science Foundation of China (Nos. 11875124, U1867222, 11575055, 11705052 & 11705151), and the National Magnetic Confinement Fusion Science Programme of China (Nos. 2015GB120002, 2015GB11101 & 2015GB104000).

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Received Date: June 16, 2019
Revised Date: September 10, 2019
Accepted Date: September 10, 2019

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Abstract

Abstract

The effect of resonant magnetic perturbation (RMP) on boundary turbulence and transport in J-TEXT plasma is experimentally investigated. Edge plasma fluctuations in discharges with and without the (m/n=3/1) RMP currents are diagnosed by using Langmuir probe arrays. It was found that fluctuations in the edge and scrape-off layer (SOL) regions decrease with the application of a 6 kA RMP. The broadband turbulence at the radial location of ρ ~ 0.9 which has a characteristic frequency of 40–150 kHz was strongly suppressed when applying RMP, as was the radial turbulent particle flux and blob transport in the near-SOL region. These experimental findings make RMP a promising method of suppressing and controlling turbulence and particle transport in a plasma boundary.
- RMP,
- turbulent transport,
- blob

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1.	Yuan, J., Xu, M., Yu, Y. et al. Impact of resonant magnetic perturbation on blob motion and structure using a gas puff imaging diagnostic on the HL-2A tokamak. Plasma Science and Technology, 2023, 25(9): 095103. DOI:10.1088/2058-6272/accbaa
2.	Wu, T., Xu, M., Nie, L. et al. Effect of edge turbulent transport on scrape-off layer width on HL-2A tokamak. Plasma Science and Technology, 2021, 23(2): 025101. DOI:10.1088/2058-6272/abd6b7
3.	Zweben, S.J., Fredrickson, E.D., Myra, J.R. et al. MHD-blob correlations in NSTX. Physics of Plasmas, 2020, 27(5): 052505. DOI:10.1063/5.0006515

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