首页|Effects of counter-current driven by electron cyclotron waves on neoclassical tearing mode suppression

Effects of counter-current driven by electron cyclotron waves on neoclassical tearing mode suppression

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Through theoretical analysis,we construct a physical model that includes the influence of counter-external driven current opposite to the plasma current direction in the neoclassical tearing mode(NTM).The equation is used with this model to obtain the modified Rutherford equation with co-current and counter-current contributions.Consistent with the reported experimental results,numerical simulations have shown that the localized counter external current can only par-tially suppress NTM when it is far from the resonant magnetic surface.Under some circumstances,the Ohkawa mechanism dominated current drive(OKCD)by electron cyclotron waves can concurrently create both co-current and counter-current.In this instance,the minimal electron cyclotron wave power that suppresses a particular NTM was calculated by the Ruther-ford equation.The result is marginally less than when taking co-current alone into consideration.As a result,to suppress NTM using OKCD,one only needs to align the co-current with a greater OKCD peak well with the resonant magnetic surface.The effect of its lower counter-current does not need to be considered because the location of the counter-current deviates greatly from the resonant magnetic surface.

driven currentneoclassical tearing modemodified Rutherford equationelectron cyclotron waves

高钦、郑平卫

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School of Resource Environment and Safety Engineering,University of South China,Hengyang 421001,China

Demonstration Base for International Science and Technology Cooperation on Nuclear Energy and Nuclear Safety,University of South China,Hengyang 421001,China

国家重点研发计划国家重点研发计划国家自然科学基金国家自然科学基金湖南省自然科学基金Doctoral Initiation Fund Project of University of South ChinaHunan Nuclear Fusion International Science and Technology Innovation Cooperation BaseHengyang Key Laboratory of Magnetic Confinement Nuclear Fusion Research

2022YFE030700002022YFE0307000312375220120751142021JJ30569190XQD1142018WK40092018KJ108

2024

10.1088/1674-1056/ad23d3

中国物理B(英文版)
中国物理学会和中国科学院物理研究所

中国物理B(英文版)

CSTPCDEI
影响因子：0.995
ISSN：1674-1056
年,卷(期)：2024.33(5)
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