Magnetic Helicity Injection Mechanism for Double-Null Startup of the UTST Spherical Tokamak Plasmas
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概要
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A close relationship between magnetic helicity injection and magnetic reconnection was observed during double-null formation of spherical tokamak (ST) plasmas. The magnetic reconnection of common flux into private flux causes concentration of current density along the current sheet, forming a high eigen-value area between the helicity source (coil flux) and the ST plasma. The formation of a plasmoid and its translation to core plasma indicate intermittent translation of the high eigen-value area, suggesting a mechanism for helicity injection.
著者
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Yamada Takuma
Graduate School Of Frontier Science University Of Tokyo
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KAMIO Shuji
Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa 277-8561, Japan
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CAO Qinghong
Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa 277-8561, Japan
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SUZUKI Naoto
Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa 277-8561, Japan
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WATANABE Takenori
Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa 277-8561, Japan
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ISHIGUCHI Koji
The Open University of Japan, Mihama 261-8586, Japan
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ONO Yasushi
Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa 277-8561, Japan
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INOMOTO Michiaki
Graduate School of Frontier Sciences, The University of Tokyo, Chiba 277-8561, Japan
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YAMADA Takuma
Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa 277-8561, Japan
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INOMOTO Michiaki
Graduate School of Frontier Sciences, The University of Tokyo
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