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Modeling of the influences of multiple modulated electron cyclotron current drive on NTMs in rotating plasma
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作者 Long CHEN Jinyuan LIU +2 位作者 Ping DUAN Guangrui LIU xingyu bian 《Plasma Science and Technology》 SCIE EI CAS CSCD 2017年第2期8-14,共7页
In this work, physical models of neoclassical tearing modes (NTMs) including bootstrap current and multiple modulated electron cyclotron current drive model are applied. Based on the specific physical problems durin... In this work, physical models of neoclassical tearing modes (NTMs) including bootstrap current and multiple modulated electron cyclotron current drive model are applied. Based on the specific physical problems during the suppression of NTMs by driven current, this work compares the efficiency of continuous and modulated driven currents, and simulates the physical processes of multiple modulated driven currents on suppressing rotating magnetic island. It is found that when island rotates along the poloidal direction, the suppression ability of continuous driven current can be massively reduced due to current deposition outside the island separatrix and reverse deposition direction at the X point, which can be avoided by current drive modulation. Multiple current drive has a better suppressing effect than single current drive. This work gives realistic numerical simulations by optimizing the model and parameters based on the experiments, which could provide references for successful suppression of NTMs in future advanced tokamak such as international thermonuclear experimental reactor. 展开更多
关键词 neoclassical tearing modes magnetic island current drive modulated rf wave plasma rotation
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