Laboratory experiment of magnetic reconnection under strong guide field to investigate generation process of energetic electrons
| Project/Area Number |
26287143
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Partial Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Plasma science
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| Research Institution | The University of Tokyo |
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Principal Investigator |
INOMOTO Michiaki 東京大学, 大学院新領域創成科学研究科, 准教授 (00324799)
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| Co-Investigator(Kenkyū-buntansha) |
小野 靖 東京大学, 大学院新領域創成科学研究科, 教授 (30214191)
今田 晋亮 名古屋大学, 宇宙地球環境研究所, 講師 (40547965)
神尾 修治 核融合科学研究所, ヘリカル研究部, 助教 (80705525)
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| Project Period (FY) |
2014-04-01 – 2018-03-31
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| Project Status |
Completed (Fiscal Year 2017)
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| Budget Amount *help |
¥15,990,000 (Direct Cost: ¥12,300,000、Indirect Cost: ¥3,690,000)
Fiscal Year 2017: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2016: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2015: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2014: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
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| Keywords | 宇宙・天体プラズマ / 磁気リコネクション / 粒子加速 |
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| Outline of Final Research Achievements |
Electron acceleration during magnetic reconnection process under a strong guide field was experimentally investigated by using a variety of diagnostics in axial merging of two torus plasmas. Single sight-line soft X-ray measurement and small energy analyzer revealed that fast electrons with energy higher than 200 eV were generated during the guide field reconnection process. The acceleration region was identified by using the soft X-ray imaging system. The accelerated electrons formed a localized current filament to affect the global magnetic field profile. The acceleration mechanism and its contribution to reconnection process was successfully verified by using axisymmetric experimental configuration.
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Report
(5 results)
Research Products
(49 results)
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[Journal Article] Laboratory study of diffusion region with electron energization during high guide field reconnection2015
Author(s)
K. Yamasaki, S. Inoue, S. Kamio, TG. Watanabe, T. Ushiki, X. Guo, T. Sugawara, K. Matsuyama, N. Kawakami, T. Yamada, M. Inomoto, Y. Ono
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Journal Title
Physics of Plasmas
Volume: 22
Issue: 10
Pages: 101202-101202
DOI
Related Report
Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
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[Journal Article] Center-solenoid-free merging start-up of spherical tokamak plasmas in UTST2015
Author(s)
M. Inomoto, T. Watanabe, K. Gi, K. Yamasaki, S. Kamio, R. Imazawa, T. Yamada, X. Guo, T. Ushiki, H. Ishikawa, H. Nakamata, N. Kawakami, T. Sugawara, K. Matsuyama, K. Noma, A. Kuwahata, and H. Tanabe
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Journal Title
Nuclear Fusion
Volume: 55
Issue: 3
Pages: 033013-033013
DOI
Related Report
Peer Reviewed
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[Presentation] プラズマ合体を用いた球状トカマクの立ち上げと加熱2016
Author(s)
井通暁, 牛木知彦, 郭学瀚, 山田琢磨, 神尾修治, 山崎広太郎, 菅原拓路, 深井優介, 山中晴揮, 田村崚, 田辺博士, 小野靖
Organizer
第１１回核融合エネルギー連合講演会
Place of Presentation
九州大学伊都キャンパス
Year and Date
2016-07-14
Related Report
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[Presentation] Relaxation of electron temperature and density profiles after merging startup in UTST2014
Author(s)
T. Sugawara, M. Inomoto, X. Guo, H. Tanabe, T. G. Watanabe, K. Yamasaki, T. Ushiki, H. Nakamata, H. Ishikawa, K. Matsuyama, N. Kawakami, Y. Ono
Organizer
3rd A3 Foresight Workshop on Spherical Torus (ST)
Place of Presentation
オークラアカデミアパークホテル（千葉県木更津市）
Year and Date
2014-12-15
Related Report
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[Presentation] Generation of Energetic Electrons by Magnetic Reconnection with Presence of High Guide Field2014
Author(s)
M. Inomoto, T.G. Watanabe, K. Yamasaki, S. Kamio, T. Yamada, A. Wang, X. Guo, T. Ushiki, H. Ishikawa, H. Nakamata, H. Itagaki, A. Kuwahata, B. Gao, R. Yanai
Organizer
25th IAEA Fusion Energy Conference
Place of Presentation
サンクトペテルブルグ（ロシア）
Year and Date
2014-10-13
Related Report
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[Presentation] Merging startup of high beta spherical tokamak by using outer poloidal field coils2014
Author(s)
M. Inomoto, T.G. Watanabe, K. Yamasaki, A. Wang, T. Ushiki, X. Guo, H. Ishikawa, H. Nakamata, N. Kawakami, T. Sugawara, K. Matsuyama, Y. Ono
Organizer
Workshop on Exploratory Topics in Plasma and Fusion Research (EPR) and US-Japan Compact Torus (CT) Workshop
Place of Presentation
ウィスコンシン州マディソン（米国）
Year and Date
2014-08-08
Related Report
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[Presentation] Observation of Energetic Electrons Generated during Guide Field Reconnection2014
Author(s)
M. Inomoto, T.G. Watanabe, K. Yamasaki, A. Wang, T. Ushiki, X. Guo, H. Ishikawa, H. Nakamata, A. Kuwahata, R. Yanai, Y. Ono
Organizer
US-Japan Workshop on Magnetic Reconnection MR2014
Place of Presentation
東京大学（東京都文京区）
Year and Date
2014-05-20
Related Report
Invited
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