Numerical Study on Suppression of Radio Frequency Wave Current Drive on Double Tearing Modes Instability

CHEN Shi-jia; GONG Xue-yu; LI Xin-xia; HE Zhi-xiong; LU Xing-qiang

doi:10.7538/yzk.2017.51.04.0597

Atomic Energy Science and Technology > 2017 > 51(4): 597-602. > DOI: 10.7538/yzk.2017.51.04.0597

CHEN Shi-jia, GONG Xue-yu, LI Xin-xia, HE Zhi-xiong, LU Xing-qiang. Numerical Study on Suppression of Radio Frequency Wave Current Drive on Double Tearing Modes Instability[J]. Atomic Energy Science and Technology, 2017, 51(4): 597-602. DOI: 10.7538/yzk.2017.51.04.0597

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Numerical Study on Suppression of Radio Frequency Wave Current Drive on Double Tearing Modes Instability

1.
School of Nuclear Science and Technology, University of South China, Hengyang 421001, China
2.
Southwestern Institute of Physics, Chengdu 610041, China

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Abstract

Abstract

Controlling double tearing modes instability by radio frequency (RF) wave current drive was explored by using numerical simulation with incompressible magnetohydrodynamics (MHD) in a periodic cylinder. The results show that a localized driven current along the background current direction on rational surfaces in Tokamak device has a suppression effect on the 3/1 double tearing modes instability, and the optimal initial localized driven current is current with I_cd=4%I and δ_cd=0.07a. In addition, only when the localized driven current is injected before the fast growth stage, the double tearing modes can be suppressed.
- Tokamak,
- magnetohydrodynamics,
- double tearing modes instability

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References

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