On the Transition Regime of Nonlinear Error Field Penetration in Toroidal Plasmas

WANG Huihui (王辉辉); WANG Zhengxiong (王正汹); DING Yonghua (丁永华); et al.

doi:10.1088/1009-0630/17/7/03

Plasma Science and Technology > 2015 > 17(7): 539-544. > DOI: 10.1088/1009-0630/17/7/03

WANG Huihui (王辉辉), WANG Zhengxiong (王正汹), DING Yonghua (丁永华), et al.. On the Transition Regime of Nonlinear Error Field Penetration in Toroidal Plasmas[J]. Plasma Science and Technology, 2015, 17(7): 539-544. DOI: 10.1088/1009-0630/17/7/03

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On the Transition Regime of Nonlinear Error Field Penetration in Toroidal Plasmas

1 MOE Key Laboratory of Materials Modification by Beams of the Ministry of Education, School of Physics and Optoelectronic Engineering, Dalian University of Technology, Dalian 116024, China 2 Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China 3 School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China

Funds: supported by the National Magnetic Confinement Fusion Science Program of China (Nos. 2014GB124001 and 2013GB102000) and National Natural Science Foundation of China (Nos. 11322549, 11275043 and 11275080)

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Received Date: October 09, 2014

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Abstract

Abstract

The error field penetration is numerically studied in the frame of the visco-resistive magnetohydrodynamics (MHD) model. A transition scaling is obtained to link the Rutherford and Waelbroeck regimes in the nonlinear phase of error field penetration process. Furthermore, a transition density scaling of
[b _r/B_T ] _crit ∼ n^1/2_eis obtained in accord with recent experimental observations in the J-TEXT tokamak.
- error field,
- lock mode,
- penetration regime,
- tokamak

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