Electromagnetic Field Simulation for ICRF Antenna and Comparison with Experimental Results in LHD
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概要
- 論文の詳細を見る
Ion cyclotron range of frequencies (ICRF) heating antennas in LHD are numerically simulated and analyzed by HFSSTM finite-element electromagnetic wave field calculation code. The model includes an accurate vacuum chamber wall of LHD and ICRF antenna structure and a simple model of plasma in a helical configuration. Antenna coupling with plasma is simulated by an artificial freshwater volume with enhanced high permittivity of ε = 500-2000. RF current distribution and electromagnetic field distribution on and near the ICRF antenna are analyzed and well elucidated through a comparison with the experimental results. The frequency dependence of experimental loading resistance can be simulated by the calculation, and the RF dissipation on the antenna structure is studied and compared with experimental results. The local high heat load around gaps between the carbon side protectors is well explained, and the effect of gap distance is studied. Comparison with the experimental results reveals that the ICRF heating in the LHD, including the antenna and helical plasma, is well simulated by commercial HFSSTM code analysis. It will also be useful for future improvements in ICRF antenna design in helical devices.
- 社団法人 プラズマ・核融合学会の論文
著者
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KUMAZAWA Ryuhei
National Insitute for Fusion Science
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SEKI Tetsuo
National Insitute for Fusion Science
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Mutoh Takashi
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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KASAHARA Hiroshi
National Institute for Fusion Science
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NOMURA Goro
National Institute for Fusion Science, 322-6 Oroshi, Toki, Gifu 509-5292, Japan
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SHIMPO Fujio
National institute for fusion science, 322-6 Oroshi-cho, Toki 509-5292, Japan
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SHIMPO Fujio
National Institute for Fusion Science, 322-6 Oroshi, Toki, Gifu 509-5292, Japan
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SAITO Kenji
National Institute for Fusion Science
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