Improvement of Ion Confinement in Core Electron-Root Confinement (CERC) Plasmas in Large Helical Device
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概要
- 論文の詳細を見る
An increase in ion temperature has been observed with superposition of centrally focused electron cyclotron resonance heating (ECRH) to plasmas heated by high-energy neutral beam injection (NBI) in Large Helical Device. The ion-temperature (Ti) rise is accompanied by the formation of electron internal transport barrier (ITB). A transport analysis shows that ion transport as well as electron transport is improved with the reduction of anomalous transport. A neoclassical ambipolar flux calculation shows a positive radial-electric field (Er) in the region of the Ti rise, and Er should suppress the enhancement of ripple transport due to the Ti-rise. These analyses indicate the ion transport improvement in the core electron-root confinement plasmas. Toroidal rotation is driven in the co-direction by applying ECRH, and the toroidal rotation velocity is increased with the Ti rise. A correlation between the Ti rise and toroidal rotation is suggested.
著者
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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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KANEKO Osamu
National Insitute for Fusion Science
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KOMORI Akio
National Insitute for Fusion Science
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FUNABA Hisamichi
National Insitute for Fusion Science
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GOTO Motoshi
National Insitute for Fusion Science
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IDA Katsumi
National Insitute for Fusion Science
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IKEDA Katsunori
National Insitute for Fusion Science
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MORITA Shigeru
National Insitute for Fusion Science
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NARIHARA Kazumichi
National Insitute for Fusion Science
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OSAKABE Masaki
National Insitute for Fusion Science
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TAKEIRI Yasuhiko
National Insitute for Fusion Science
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TSUMORI Katsuyoshi
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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YOSHINUMA Mikiro
National Insitute for Fusion Science
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NAGAOKA Kenichi
National Institute for Fusion Science, 322-6 Oroshi-cho, Toki 509-5292, Japan
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Tanaka Kenji
National Food Institute
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NAGAOKA Kenichi
National Institute for Fusion Science
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YOSHINUMA Mikiro
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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OKA Yashihide
National Institute for Fusion Science, 322-6 Oroshi-cho, Toki 509-5292, Japan
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TSUMORI Katsuyoshi
National Institute for Fusion Science, 322-6 Oroshi-cho, Toki 509-5292, Japan
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YOKOYAMA Masayuki
National Institute for Fusion Science, 322-6 Oroshi-cho, Toki 509-5292, Japan
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OSAKABE Masaki
National Institute for Fusion Science, 322-6 Oroshi-cho, Toki 509-5292, Japan
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