Study of Magnetic Island Using a 3D MHD Equilibrium Calculation Code

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Author(s)

    • SUZUKI Yasuhiro
    • National Institute for Fusion Science, Toki 509-5292, Japan|Graduate University for Advanced Studies (SOKENDAI), Toki 509-5292, Japan
    • SAKAKIBARA Satoru
    • National Institute for Fusion Science, Toki 509-5292, Japan|Graduate University for Advanced Studies (SOKENDAI), Toki 509-5292, Japan
    • WATANABE Kiyomasa
    • National Institute for Fusion Science, Toki 509-5292, Japan|Graduate University for Advanced Studies (SOKENDAI), Toki 509-5292, Japan
    • NARUSHIMA Yoshiro
    • National Institute for Fusion Science, Toki 509-5292, Japan|Graduate University for Advanced Studies (SOKENDAI), Toki 509-5292, Japan
    • OHDACHI Satoshi
    • National Institute for Fusion Science, Toki 509-5292, Japan|Graduate University for Advanced Studies (SOKENDAI), Toki 509-5292, Japan
    • OKADA Hiroyuki
    • Institute of Advanced Energy, Kyoto University, Uji 611-0011, Japan

Abstract

Coupling the magnetic diagnostics and a 3D MHD equilibrium calculation code, the magnetic island is studied in the Large Helical Device (LHD) experiment. In an experiment, the collapse in the plasma core was observed in a configuration, which has large magnetic island produced by external perturbation coils. At the collapse, the temperatur profile was flattened. This suggests the magnetic island evolved. The magnetic island was observed by the magnetic diagnostics. The magnetic diagnostics also suggests evolving the magnetic island. A 3D MHD equilibrium is caluclated by the 3D MHD equilibrium code then signals of the magnetic diagnostics are simulated. Since the comparison of observed and calculated signals is comparable, the magnetic island in calculated equilibrium is similar to one of the experiment.

Journal

  • Plasma and Fusion Research

    Plasma and Fusion Research (6), 2402134-2402134, 2011

    The Japan Society of Plasma Science and Nuclear Fusion Research

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