Measurement of Radial Structure of Energetic-Ion-Driven MHD Modes with a Fast Response Hα-Detector Array in the Large Helical Device
スポンサーリンク
概要
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In the Large Helical Device, coherent fluctuations related to energetic-ion-driven magneto-hydrodynamic (MHD) instabilities such as Alfvén eigenmodes (AEs) were detected for the first time using an Hα detector array having high-frequency response up to 200 kHz. Correlation analysis between detector and magnetic probe signals has enabled us to successfully extract coherent fluctuations in the AE frequency range. The radial profile of the excess of the coherence from the background value (Δγ) has a clear peak around the predicted toroidal Alfvén eigenmode (TAE) gap.
- 社団法人 プラズマ・核融合学会の論文
著者
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ISOBE Mitsutaka
National Insitute for Fusion Science
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TOI Kazuo
National Insitute for Fusion Science
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Kato Daiji
National Inst. Fusion Sci. Toki Jpn
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SUZUKI Chihiro
National Institute for Fusion Science
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Watanabe Fumitake
Department Of Chemical Engineering Osaka Prefecture University
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Sato Kuninori
National Insititute for Fusion Science
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TOI Kazuo
National Institute for Fusion Science, 322-6 Oroshi-cho, Toki 509-5292, Japan
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OGAWA Kunihiro
Department of Energy Science and Engineering, Nagoya University, Nagoya 464-8603, Japan
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WATANABE Fumitake
Department of Energy Science and Engineering, Nagoya University, Nagoya 464-8603, Japan
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ISOBE Mitsutaka
National Institute for Fusion Science, 322-6 Oroshi-cho, Toki 509-5292, Japan
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SATO Kuninori
National Institute for Fusion Science, 322-6 Oroshi-cho, Toki 509-5292, Japan
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SUZUKI Chihiro
National Institute for Fusion Science, 322-6 Oroshi-cho, Toki 509-5292, Japan
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OGAWA Kunihiro
Department of Energy Science and Engineering, Nagoya University
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