Heat- and Particle-Deposition Distribution on Helical Divertor Plates in LHD During Real-Time Magnetic-Axis Swing Operations
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概要
- 論文の詳細を見る
Investigations of heat- and particle-deposition distributions on helical divertor plates were performed both experimentally and numerically with the Large Helical Device (LHD). The distributions were measured by thermocouples and Langmuir probe arrays embedded in the divertor plates. They are similar to the distribution of field lines with long connection lengths, which are estimated numerically by field-line tracing calculations. Localized heat- and particle-deposition distributions were observed, and were found to be determined primarily by the magnetic-field line structure in the divertor region. They vary depending on the configuration - the intensively loaded areas move with a change of the magnetic configuration. Using this property, a swing of the magnetic axis successfully dispersed the heat and particle loads on the divertor plate during long-pulse discharges. The magnetic-axis swing around a certain magnetic-axis position is found to be very effective in changing the field-line distribution pattern drastically, and thus dispersing the heat load.
- 社団法人 プラズマ・核融合学会の論文
著者
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OHYABU Nobuyoshi
National Insitute for Fusion Science
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KOMORI Akio
National Insitute for Fusion Science
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KUMAZAWA Ryuhei
National Insitute for Fusion Science
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MASUZAKI Suguru
National Insitute for Fusion Science
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MORISAKI Tomohiro
National Insitute for Fusion Science
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NAKAMURA Yukio
National Insitute for Fusion Science
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SEKI Tetsuo
National Insitute for Fusion Science
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WATANABE Tsuguhiro
National Insitute for Fusion Science
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Mutoh Takashi
National Institute For Fusion Science
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Watanabe Tsuguhiro
National Institute For Fusion Science
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Saito Kenji
National Institute of Genetics Research Organization of Information and Systems
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Kumazawa Ryuhei
National Institute For Fusion Science
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Seki Tetsuo
National Institute For Fusion Science
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OGAWA Hironori
Graduate University for Advanced Studies
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SAITO Kenji
National Institute for Fusion Science
関連論文
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- Experimental Observation of Magnetic Fluctuations in NBI Heated Plasmas in CHS
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- Suppression of Carbon Dust Formation by Nitrogen Injection into Hydrogen Plasmas in Detached Plasma Conditions
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