Current Distribution Optimization in Electromagnet: Application to Superconducting Linear Acceleration System
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- YAMAGUCHI Takazumi
- The Graduate University for Advanced Studies (SOKENDAI)
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- TAKAYAMA Teruou
- Yamagata University
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- KAMITANI Atsushi
- Yamagata University
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- OHTANI Hiroaki
- The Graduate University for Advanced Studies (SOKENDAI) National Institute for Fusion Science
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説明
<p>The current distribution in the electromagnet is optimized so as to maximize the acceleration performance of a superconducting linear acceleration (SLA) system. As a novel pellet injection system for a fusion reactor, the SLA system has been proposed recently. The SLA system is composed of the electromagnet and the pellet container to which a high-temperature superconducting (HTS) film is attached. The pellet container is accelerated by using the Lorentz force between the HTS film and the electromagnet. In the present study, the current distribution in the electromagnet is represented as a set of the filaments by the on-off method. Moreover, the current distribution optimization is performed by using the non-dominated sorting genetic algorithm II (NSGA-II). Furthermore, the dynamic motion of the pellet container is determined by solving the equivalent-circuit model and Newton's equation of motion. According to the numerical results, the acceleration performance is improved by partly applying the electric current to the electromagnet. Compared with the case of the homogeneous current distribution, the pellet velocity for the optimized current distribution increases by 26%.</p>
収録刊行物
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- Plasma and Fusion Research
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Plasma and Fusion Research 15 (0), 2405050-2405050, 2020-07-15
一般社団法人 プラズマ・核融合学会
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詳細情報 詳細情報について
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- CRID
- 1390285300179264768
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- NII論文ID
- 130007882171
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- NII書誌ID
- AA12346675
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- ISSN
- 18806821
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- HANDLE
- 10655/00012997
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- IRDB
- Crossref
- CiNii Articles
- KAKEN
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- 抄録ライセンスフラグ
- 使用不可
