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2011 Fiscal Year Annual Research Report

急速合体加熱と定常中性粒子ビーム加熱を駆使した球状トーラスの限界ベータ検証実験

Research Project

Project/Area Number 22246119
Research InstitutionThe University of Tokyo

Principal Investigator

小野 靖  東京大学, 大学院・新領域創成科学研究科, 教授 (30214191)

Co-Investigator(Kenkyū-buntansha) 井 通暁  東京大学, 大学院・新領域創成科学研究科, 准教授 (00324799)
山田 琢磨  東京大学, 大学院・新領域創成科学研究科, 助教 (90437773)
榊田 創  独立行政法人産業技術総合研究所, エネルギー技術研究部門, 研究グループ長 (90357088)
清水 敏文  独立行政法人宇宙航空研究開発機構, 宇宙科学研究本部, 准教授 (60311180)
Keywordsベータ限界 / プラズマ合体 / 中性粒子ビーム / 球状トカマク / 磁場反転配位 / 磁気リコネクション / プラズマ加熱 / 圧力駆動型不安定
Research Abstract

本年度は、UTSTのトーラス・ソレノイドコイルの容量・機械強度をアップし、EFコイルも大容量化を完了し、2台のNBIと運用を開始し、TS-4でも超高ベータ球状トカマク実験用に短パルスワッシャーガン型NBIの高出力・短パルス化を進め、0.7MW,15kV,100μsecの高出力を実現し、NBI実験を本格化させた。際だった効果は、低エネルギー・大出力NBIのTS-4で大きく現れ、合体加熱後の高ベータ球状トカマクSTおよび磁場反転配位FRCで10%-30%の磁気・熱エネルギー増加と配位維持効果が認められた。NBIの有無のデータを比較すると磁気・熱エネルギー上昇はNBIのビームパワーを大きく上回っており、加熱だけでなく、NBI由来の高エネルギーイオンが高ベータ平衡の安定性を向上させることがわかってきた。合体・リコネクション加熱の最適化により、STを容易に絶対極小磁場配に変換できるようになったことも大きな進展である。この配位はバルーニングモードに対する安定解析を行うと第2安定状態にあることがわかってきた。以上の高ベータSTの合体加熱と絶対極小磁場配位の形成、FRCのNBI実験の成果はそれぞれFusionEnergyConference2012の日本側論文に選ばれている。また、目玉であるイオン温度、電子温度、磁場の2次元計測も開発を終了して運用を始め、STの合体・リコネクション加熱を画像計測した結果、リコネクション下流でアウトフローがファーストショックを形成してイオンを加熱し、電流シートのオーム加熱が電子を加熱することが明らかになった。この成果はPhysicalReviewLetters誌に掲載された他、超高ベータSTの合体生成の成果と共にEuropeanPhysicalSociety2012年会の基調講演に選ばれている。

Current Status of Research Progress
Current Status of Research Progress

1: Research has progressed more than it was originally planned.

Reason

研究分担者や協力者からのNBI設備の協力やトムソン散乱計測設備への協力により、NBI装置は合計3台増え、温度計測点も同様の協力によって高精細化され、それらがPhysical Review Letters論文やFusion Energy Conference 2012論文もEuropean Physical Society 2012の基調講演などの成果につながっており、当初計画以上に進展しているといえる。

Strategy for Future Research Activity

NBI設備やトムソン散乱計測設備への協力によって大幅に設備が拡充されたが、設備拡充がそのまま成果につながったところと、TS-4,UTSTに適合させるために計画に変更を加えなければならないところがでている。前者は既にいくつかの論文にもなり、そのまま物理解明を前進させる予定である。後者は問題を迅速に解決しつつ、拡充された設備をTS-4,UTST実験に適合させ、成果につなげる努力を継続する予定である。

  • Research Products

    (40 results)

All 2012 2011

All Journal Article (11 results) (of which Peer Reviewed: 11 results) Presentation (29 results)

  • [Journal Article] 磁気リコネクションを介した異極性プラズマ合体実験における低周波磁場揺動の計測2012

    • Author(s)
      桑波田晃弘 ,田辺博士 ,伊藤慎悟 ,井通暁 ,小野靖
    • Journal Title

      電気学会論文誌A

      Volume: 132-A Pages: 233-238

    • DOI

      10.1541/ieejfms.132.233

    • Peer Reviewed
  • [Journal Article] プラズマ中の磁力線のインパルス型再結合現象2012

    • Author(s)
      林由記、伊井亨、井通暁、小野靖
    • Journal Title

      電気学会論文誌A

      Volume: 132-A Pages: 233-238

    • DOI

      10.1541/ieejfms.l32.239

    • Peer Reviewed
  • [Journal Article] 飛行時間差と往復反射を用いたトムソン散乱計測の2次元化の基礎研究2012

    • Author(s)
      伊藤慎悟, 坂本恒之, 小谷来太, 井通暁, 小野靖, 成原一途
    • Journal Title

      電気学会論文誌A

      Volume: 132-A Pages: 574-579

    • DOI

      10.1541/ieejfms.132.574

    • Peer Reviewed
  • [Journal Article] Study of Particle Acceleration during Reconnection via TS-4 Particle Trajectory Simulations2012

    • Author(s)
      Patrick Copinger, Michiaki Inomoto, Toru Ii, Akihiro Kuwahata, Yoshinori Hayashi, Yasushi Ono
    • Journal Title

      電気学会論文誌A

      Volume: 132-A Pages: 411-416

    • DOI

      10.1541/ieejfms.132.411

    • Peer Reviewed
  • [Journal Article] Multipoint Spectroscopy Measurement of Spherical Tokamak Heating by Magnetic Reconnection in UTST2012

    • Author(s)
      S. Kamio, Q. Cao, K. Abe, M. Sakumura, N. Suzuki, T. G Watanabe, K. Ishiguchi, R. Imazawa, T. Yamada, M. Inomoto, Y. Ono
    • Journal Title

      Plasma and Fusion Research

      Volume: 6 Pages: 2402033

    • DOI

      10.1585/pfr.6.2402033

    • Peer Reviewed
  • [Journal Article] Ion and Electron Heating Characteristics of Magnetic Reconnection in a Two Flux Loop Merging Experiment2011

    • Author(s)
      Y. Ono, H. Tanabe, Y. Hayashi, T.Ii, Y. Narushima, T. Yamada, M. Inomoto, C. Z. Cheng
    • Journal Title

      Physical Review Letters

      Volume: 107 Pages: 185001-185005

    • DOI

      10.1103/PhysRevLett.107.185001

    • Peer Reviewed
  • [Journal Article] Intermittent magnetic reconnection in TS-3 merging experiment2011

    • Author(s)
      Y. Ono, Y. Hayashi, T. Ii, Tanabe, S. Inoue, A. Kuwahata, T. Ito, Y. Kamino, T. Yamada
    • Journal Title

      Physics of Plasmas

      Volume: 18 Pages: 111213-111219

    • DOI

      10.1063/1.3662434

    • Peer Reviewed
  • [Journal Article] Magnetic Helicity Injection Mechanism for Double-Null Startup of the UTST Spherical Tokamak Plasmas2011

    • Author(s)
      T. Watanabe, Y. Ono, et al.
    • Journal Title

      Plasma and Fusion Research

      Volume: 6 Pages: 1202131

    • DOI

      10.1585/pfr.6.1202131

    • Peer Reviewed
  • [Journal Article] プラズモイド放出を用いた動的ダイバータのMHDシミュレーション2011

    • Author(s)
      井上静雄 ,小野靖 ,伊藤慎悟
    • Journal Title

      電気学会論文誌A

      Volume: 131-A Pages: 963-964

    • DOI

      10.1541/ieejfms.131.963

    • Peer Reviewed
  • [Journal Article] 磁力線追跡を用いた磁場反転配位の合体生成機構の実験的解析2011

    • Author(s)
      魏啓為 ,伊井亨 ,小野靖
    • Journal Title

      電気学会論文誌A

      Volume: 131-A Pages: 961-962

    • DOI

      10.1541/ieejfms.131.961

    • Peer Reviewed
  • [Journal Article] Low Frequency Magnetic Fluctuations during Magnetic Reconnection in Laboratory Experiment2011

    • Author(s)
      A. Kuwahata, H. Tanabe, S. Ito, M. Inomoto, Y. Ono
    • Journal Title

      Plasma and Fusion Research

      Volume: 6 Pages: 1201127

    • DOI

      10.1585/pfr.6.1201127

    • Peer Reviewed
  • [Presentation] TS-4プラズマ合体実験を用いた非定常リコネクション機構の検証2012

    • Author(s)
      門脇和丈, 松田敦志, 林由記, 伊藤慎悟, 岡裕貴, 案浦正将, 井通暁, 小野靖
    • Organizer
      日本天文学会2012年春季年会
    • Place of Presentation
      京都工繊維大学, 京都
    • Year and Date
      20120319-20120322
  • [Presentation] 磁気リコネクション室内実験における電流シート近傍の磁場および静電揺動計測2012

    • Author(s)
      井通暁, 桑波田晃弘, 高博シン, 小野靖
    • Organizer
      日本天文学会2012年春季年会
    • Place of Presentation
      京都工繊維大学, 京都(招待)
    • Year and Date
      20120319-20120322
  • [Presentation] プラズモイド放出を用いた動的ダイバータの提案2012

    • Author(s)
      井上静雄, 神納康宏, 小野靖
    • Organizer
      平成23年度核融合科学研究所一般共同研究「ST研究会」
    • Place of Presentation
      核融合科学研究所, 岐阜県土岐市
    • Year and Date
      2012-02-23
  • [Presentation] Magnetic Fluctuations during Reconnection in Plasma Merging Experiment2011

    • Author(s)
      A. Kuwahata, B. Gao, T. Ito, H. Tanabe, S. Ito, M. Inomoto, Y. Ono
    • Organizer
      The 11th University of Tokyo - Seoul National University Joint Seminar on Electrical Engineering
    • Place of Presentation
      Univ. Tokyo, Tokyo, Japan
    • Year and Date
      20111202-20111203
  • [Presentation] Kinetic open boundary simulations of driven reconnection for TS-3 laboratory plasma merging experiment2011

    • Author(s)
      R Copinger, H. Ohtani, A. Kuwahata, H. Tanabe, Y. Ono, R. Horiuchi
    • Organizer
      The 11th University of Tokyo - Seoul National University Joint Seminar on Electrical Engineering,
    • Place of Presentation
      Univ. Tokyo, Tokyo, Japan
    • Year and Date
      20111202-20111203
  • [Presentation] シンポジウムR2 実験・観測・シミュレーションの連携で解くプラズモイド・リコネクションの謎 : 1.趣旨説明 ,実験で探るプラズモイドによるリコネクションの高速化2011

    • Author(s)
      小野靖
    • Organizer
      Plasma Conference 2011
    • Place of Presentation
      石川県立音楽堂 ,金沢(招待)
    • Year and Date
      20111122-20111125
  • [Presentation] TS-4球状トカマク実験のフラスモイト放出を用いた動的タイハータの提案2011

    • Author(s)
      井上静雄 ,小野靖 ,伊藤慎悟 ,井通暁
    • Organizer
      Plasma Conference 2011
    • Place of Presentation
      石川県立音楽堂 ,金沢
    • Year and Date
      20111122-20111125
  • [Presentation] UTST球状トカマク生成時の磁気ヘリシティー入射機構の検証2011

    • Author(s)
      渡辺岳典 ,小野靖 ,伊藤慎悟 ,井通暁
    • Organizer
      Plasma Conference 2011
    • Place of Presentation
      石川県立音楽堂 ,金沢
    • Year and Date
      20111122-20111125
  • [Presentation] Ion heating characteristics of magnetic reconnection in TS-3 & TS-4 tokamak and spheromak merging experiments2011

    • Author(s)
      H. Tanabe, H. Oka, A. Kuwahata, M. Annoura, S. You, M. Inomoto, Y. Ono
    • Organizer
      53rd Annual Meeting of the American Physical Society Division of Plasma Physics, NP9.00010
    • Place of Presentation
      Salt Palace Convention Center, Salt Lake City, UT, USA
    • Year and Date
      20111111-20111118
  • [Presentation] Oblate Field-Reversed Configuration Experiments with Neutral Beam Iniection2011

    • Author(s)
      T. Ii, K. Gi, T. Umezawa, M. Inomoto, Y. Ono
    • Organizer
      53rd Annual Meeting of the American Physical Society Division of Plasma Physics, NP9.00010
    • Place of Presentation
      Salt Palace Convention Center, Salt Lake City, UT, USA
    • Year and Date
      20111111-20111118
  • [Presentation] Three-Dimensional Magnetic Field Line Analysis of Two Merging Spheromaks with Counterhelicity2011

    • Author(s)
      K. Gi, T. Ii, T. Umezawa, M. Inomoto, Y. Ono
    • Organizer
      53rd Annual Meeting of the American Physical Society Division of Plasma Physics, NP9.00010
    • Place of Presentation
      Salt Palace Convention Center, Salt Lake City, UT, USA
    • Year and Date
      20111111-20111118
  • [Presentation] Dynamic Divertor Concept by Plasmoid Ejection in TS-4 Spherical Tokamak Experiment2011

    • Author(s)
      S. Inoue, Y. Ono, S. Ito, M. Inomoto, R. Horiuchi
    • Organizer
      53rd Annual Meeting of the American Physical Society Division of Plasma Physics, NP9.00010
    • Place of Presentation
      Salt Palace Convention Center, Salt Lake City, UT, USA
    • Year and Date
      20111111-20111118
  • [Presentation] Active Stabilization of FRCs by Intermittent Merging of Counter- Helicity Spheromaks in TS-3 and TS-4 Merging Experiments2011

    • Author(s)
      S. Inoue, Y. Ono, T. Watanabe, S. Ito, T. Ii, S. Kamio, T. Yamada, M. Inomoto.
    • Organizer
      53rd Annual Meeting of the American Physical Society Division of Plasma Physics, NP9.00010
    • Place of Presentation
      Salt Palace Convention Center, Salt Lake City, UT, USA
    • Year and Date
      20111111-20111118
  • [Presentation] Kinectic open boundary simulations of driven reconnection for TS-3 laboratory plasma merging experiment2011

    • Author(s)
      R Copinger, H. Ohtani, A. Kuwahata, H. Tanabe, Y. Ono, R. Horiuchi
    • Organizer
      53rd Annual Meeting of the American Physical Society Division of Plasma Physics, NP9.00010
    • Place of Presentation
      Salt Palace Convention Center, Salt Lake City, UT, USA
    • Year and Date
      20111111-20111118
  • [Presentation] Magnetic Helicity Injection Experiments for Double-null Startup of UTST spherical tokamak2011

    • Author(s)
      T. G. Watanabe
    • Organizer
      21st International Toki Conference
    • Place of Presentation
      Ceratopia Toki、Toki, Japan
    • Year and Date
      20111111-20111118
  • [Presentation] Excitation of Low Frequency Electromagnetic Waves in Magnetic Reconnection Laboratory Experiment2011

    • Author(s)
      M. Inomoto, A. Kuwahata, S. Ito , H. Tanabe, Y. Hayashi, P. Copinger, T. Ii, B. Gao, T. Ito, T. Yamada, Y. Ono
    • Organizer
      Fifth Hinode Science Conference
    • Place of Presentation
      Royal Sonesta Hotel, Cambridge, USA(Invited)
    • Year and Date
      20111011-20111014
  • [Presentation] Laboratory Experiment Oil Plasma Heating During Magnetic Reconnecti on in Torus Plasma Merging Device TS-3 and TS-42011

    • Author(s)
      H. Tanabe, A. Kuwahata, H. Oka, M. Annoura, S. You, M. Inomoto, Y. Ono
    • Organizer
      Fifth Hinode Science Conference
    • Place of Presentation
      Royal Sonesta Hotel, Cambridge, USA
    • Year and Date
      20111011-20111014
  • [Presentation] Observation of Magnetic Fluctuations with Ion Cyclotron Frequency Range during Reconnection in Plasma Merging Experiment2011

    • Author(s)
      A. Kuwahata, B. Gao, T. Ito, H. Oka, H. Tanabe, S. Ito, M. Inomoto, Y. Ono
    • Organizer
      Fifth Hinode Science Conference
    • Place of Presentation
      Royal Sonesta Hotel, Cambridge, USA
    • Year and Date
      20111011-20111014
  • [Presentation] High Power Heating of Magnetic Reconnection in TS-3, TS-4 and UTST Merging Experiments2011

    • Author(s)
      Y. Ono, H. Tanabe, T. Ii, T. Yamada, M. Inomoto, et al.
    • Organizer
      The Joint Meeting of 5th IAEA Technical Meeting on Sphcrical Tori 16th International Workshop on Spherical Torus (ISTW2011) and 2011 US-Japan Workshop on ST Plasma
    • Place of Presentation
      National Institute for Fusion Science, Toki, Gifu(Invited)
    • Year and Date
      20110927-20110930
  • [Presentation] Merging startup experiments in UTST and MAST2011

    • Author(s)
      T. Yamada, M. Gryaznevich, M. Inomoto, Y. Takase, Y. Ono, et al.
    • Organizer
      The Joint Meeting of 5th IAEA Technical Meeting on Spherical Tori 16th International Workshop on Spherical Torus (ISTW2001) and 2011 US-Japan Workshop on ST Plasma
    • Place of Presentation
      National Institute for Fusion Science, Toki, Gifu
    • Year and Date
      20110927-20110930
  • [Presentation] High Power Heating of Magnetic Reconnection in TS-3, TS-4 and UTST Merging Experiments2011

    • Author(s)
      Y. Ono, H. Tanabe, T. Ii, T. Yamada, M. Inomoto, et al.
    • Organizer
      2011 Northeastern Asian Symposium on Plasma Fusion
    • Place of Presentation
      Hotel Riviera Yuseong, Deajon, Korea(Invited)
    • Year and Date
      20110925-20110928
  • [Presentation] High Power Reconnection Heating of FRCs and STs in TS-3 and TS-4 Merging Experiment2011

    • Author(s)
      Yasushi Ono, M. Inomoto, T. Yamada
    • Organizer
      Innovative Confinement Concepts (ICC) and US-Japan Compact Torus Plasma (CT) Workshop
    • Place of Presentation
      Red Lion Hotel, Seattle, USA(invited)
    • Year and Date
      20110816-20110819
  • [Presentation] Neutral Beam Injection to Oblate FRC Formed by Plasma Merging Method2011

    • Author(s)
      M. Inomoto, T. Ii, K. Gi, T. Umezawa, Y. Ono, T. Asai, S. Okada
    • Organizer
      Innovative Confinement Concepts (ICC) and US-Japan Compact、Torus Plasma (CT) Workshop
    • Place of Presentation
      Red Lion Hotel, Seattle, USA(invited)
    • Year and Date
      20110816-20110819
  • [Presentation] Merging Formation of Oblate Field-Reversed Configurations with the Assistance of Neutral Beam Injection2011

    • Author(s)
      T. Ii, K. Gi, T. Umezawa, M. Inomoto, Y. Ono
    • Organizer
      Innovative Confinement Concepts (ICC) and US-Japan Compact Torus Plasma (CT) Workshop
    • Place of Presentation
      Red Lion Hotel, Seattle, USA
    • Year and Date
      20110816-20110819
  • [Presentation] High Power Heating of Magnetic Reconnection in Laboratory Merging Experiments2011

    • Author(s)
      Yasushi Ono
    • Organizer
      11th International Workshop on the Interrelationship between Plasma Experiments in the Laboratory and in Space (IPELS)
    • Place of Presentation
      Westin Hotel, Whistler, Canada(Invited)
    • Year and Date
      20110710-20110715
  • [Presentation] Updates Research from Japan2011

    • Author(s)
      Yasushi Ono
    • Organizer
      11th International Workshop on the Interrelationship between Plasma Experiments in the Laboratory and in Space (IPELS)
    • Place of Presentation
      Westin Hotel, Whistler, Canada(Invited)
    • Year and Date
      20110710-20110715
  • [Presentation] Wave and Plasmoid Mediated Reconnection in Laboratory Experiments2011

    • Author(s)
      M. Inomoto, Y. Hayashi, T. Yamada, Y. Ono, etc.
    • Organizer
      11th International Workshop on the Interrelationship between Plasma Experiments in the Laboratory and in Space (IPELS)
    • Place of Presentation
      Westin Hotel, Whistler, Canada(Invited)
    • Year and Date
      20110710-20110715
  • [Presentation] High Power Heating of Magnetic Reconnection in Tokamak Plasma Merging Experiments2011

    • Author(s)
      Yasushi Ono
    • Organizer
      MHD and Kinetic Processes in Laboratory, Space and Astrophysical Plasmas (LSAP2011) Workshop
    • Place of Presentation
      Peking University, Beijing, China(Invited)
    • Year and Date
      20110530-20110609
  • [Presentation] プラズマ中の磁力線のインパルス型再結合現象2011

    • Author(s)
      林由記 ,伊井亨 ,井通暁 ,小野靖
    • Organizer
      平成23年電気学会基礎・材料・共通部門大会
    • Place of Presentation
      東京工業大学、東京
    • Year and Date
      2011-09-22

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Published: 2014-07-16  

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