Effect of Ellipticity on Thermal Transport in ECH Plasmas in LHD
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概要
- 論文の詳細を見る
Effect of ellipticity on thermal transport was investigated in ECH plasmas in LHD. Ellipticity κ is scanned from 0.8 to 1.4 by controlling the quadrupole magnetic field. Experimental data of energy confinement time align with the scaling for all configurations; however, there exist systematic offsets. Performance τEexp /τEISS04 is summarized as 0.94 ± 0.02 for κ = 0.8, 1.41 ± 0.07 for κ = 1.0, and 0.91± 0.03 for κ = 1.4. Local transport analysis based on power balance indicates that the anomalous transport predominates the plasma transport. However, the observed anomaly shows correlation with the change in the effective helical ripple εeff. Physical background of this correlation and the dependence on the poloidal viscous damping rate Cp is discussed. The present experimental comparison suggests a negative evidence for the relevance of Cp.
- 社団法人 プラズマ・核融合学会の論文
著者
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MURAKAMI Sadayoshi
Department of Nuclear Engineering, Kyoto University
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KUBO Shin
National Insitute for Fusion Science
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SHIMOZUMA Takashi
National Insitute for Fusion Science
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YAMADA Hiroshi
National Insitute for Fusion Science
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FUNABA Hisamichi
National Insitute for Fusion Science
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MORISAKI Tomohiro
National Insitute for Fusion Science
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NAGAYAMA Yoshio
National Insitute for Fusion Science
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NARUSHIMA Yoshiro
National Insitute for Fusion Science
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SAKAKIBARA Satoru
National Insitute for Fusion Science
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TOKUZAWA Tokihiko
National Insitute for Fusion Science
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WATANABE Kiyomasa
National Insitute for Fusion Science
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YAMADA Ichihiro
National Insitute for Fusion Science
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YOKOYAMA Masayuki
National Insitute for Fusion Science
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Tanaka Kenji
National Food Institute
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MORISAKI Tomohiro
National Institute for Fusion Science, 322-6 Oroshi-cho, Toki 509-5292, Japan
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FUNABA Hisamichi
National Institute for Fusion Science, 322-6 Oroshi-cho, Toki 509-5292, Japan
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YAMADA Ichihiro
National Institute for Fusion Science, 322-6 Oroshi-cho, Toki 509-5292, Japan
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WATANABE Kiyomasa
National Institute for Fusion Science, 322-6 Oroshi-cho, Toki 509-5292, Japan
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TOKUZAWA Tokihiko
National Institute for Fusion Science, 322-6 Oroshi-cho, Toki 509-5292, Japan
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