Plasmoid-Induced Pull Reconnection Experiments in University of Tokyo Spherical Tokamak

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概要

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• Magnetic energy injection through pull magnetic reconnection has been studied in the University of Tokyo Spherical Tokamak (UTST) using external poloidal field coils. Under constant plasma inflow, the magnetic energy of the produced ST increases as the guide field Bt is increased from zero to the optimized value Bt0, while it decreases after Bt exceeds Bt0. The pull reconnection process was often accompanied by the formation of plasmoids around the X-point. The reconnection rate was found to change with time, depending on the formation of plasmoids and the magnetic energy injection. Plamoids enhance the reconnection rate.

• 社団法人 プラズマ・核融合学会の論文

著者

• CAO Qinghong

  Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa 277-8561, Japan

• WATANABE Takenori

  Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa 277-8561, Japan

• ISHIGUCHI Koji

  The Open University of Japan, Mihama 261-8586, Japan

• ONO Yasushi

  Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa 277-8561, Japan

• INOMOTO Michiaki

  Graduate School of Frontier Sciences, The University of Tokyo

• YAMADA Takuma

  Faculty of Arts and Science, Kyushu University

• TAKEMURA Koichiro

  Graduate School of Frontier Sciences, The University of Tokyo

• KAMIO Shuji

  National Institute for Fusion Science

• ITAGAKI Hirotomo

  Graduate School of Frontier Sciences, The University of Tokyo

• YAMASAKI Kotaro

  Graduate School of Engineering, The University of Tokyo

• ISHIGUCHI Koji

  The Open University of Japan

関連論文

• Merging Startup Experiments on the UTST Spherical Tokamak
• Low Frequency Magnetic Fluctuations during Magnetic Reconnection in Laboratory Experiment
• Magnetic Helicity Injection Mechanism for Double-Null Startup of the UTST Spherical Tokamak Plasmas
• Merging Experimental Study of High-Beta ST Formation for Non-Inductive Plasma Start-Up Assisted by NBI in TS-4
• Multipoint Spectroscopy Measurement of Spherical Tokamak Heating by Magnetic Reconnection in UTST
• Electron Acceleration by Magnetic Reconnection During Spherical Tokamak Merging Experiment
• Development of 2-D Thomson Scattering Measurement Using Multiple Reflection and the Time-of-Flight of Laser Light
• Development of a Two-Dimensional Thomson Scattering Diagnostic System involving Use of Multiple Reflection and the Time-of-Flight of Laser Light
• Identification of Quasi-Periodic Nonlinear Waveforms in Turbulent Plasmas
• Electron Acceleration by Magnetic Reconnection During Spherical Tokamak Merging Experiment
• Plasmoid-Induced Pull Reconnection Experiments in University of Tokyo Spherical Tokamak
• Experimental Study of Two-Fluid Effect during Magnetic Reconnection in the UTST Merging Experiment
• Initiation of Impulsively Fast Magnetic Reconnection Induced by Current Sheet Ejection

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