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Function of self-healing of magnetic configuration in helical fusion reactor

Research Project

Project/Area Number 15K06649
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Nuclear fusion studies
Research InstitutionNational Institute for Fusion Science

Principal Investigator

NARUSHIMA Yoshiro  核融合科学研究所, ヘリカル研究部, 助教 (40332184)

Project Period (FY) 2015-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2018: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2017: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2016: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2015: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Keywords磁場閉じ込めプラズマ / 平衡磁場 / 磁気島 / ヘリカルプラズマ / 平衡磁場配位 / デタッチ / 核融合プラズマ / 磁場閉じ込め核融合 / プラズマ平衡 / デタッチプラズマ / ヘリオトロン / 核融合 / プラズマ
Outline of Final Research Achievements

In the LHD, it is important that the ability of the self-healing of the magnetic field configuration works properly in any plasma. As a result of comparing the deuterium plasma with the hydrogen plasma, it was found that the hydrogen plasma was easier to be self-healing than the deuterium plasma. It was difficult to realize the self-healing in the deuterium plasma, but it was confirmed that the ability of the self-healing by the plasma flow works, and that the equilibrium magnetic field configuration can be self healed if the conditions are satisfied.

Academic Significance and Societal Importance of the Research Achievements

本研究により、重水素プラズマにおいても平衡磁場配位の自己修復機能が働くことが確認された。これは、磁場配位構造の破壊によるプラズマ閉じ込め性能の深刻な低下を避けることが可能であることを意味する。さらに、スピンオフ的に発見された非接触プラズマと平衡磁場配位との相関については、非接触プラズマ実現のためのひとつの方策を提供した。これらのことは、将来のヘリオトロン型核融合炉実現に向けて意義のある結果である。

Report

(6 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report
  • 2016 Research-status Report
  • 2015 Research-status Report
  • Research Products

    (25 results)

All 2019 2018 2017 2016 2015 Other

All Int'l Joint Research (7 results) Journal Article (4 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 4 results,  Acknowledgement Compliant: 1 results,  Open Access: 1 results) Presentation (14 results) (of which Int'l Joint Research: 8 results,  Invited: 1 results)

  • [Int'l Joint Research] CIEMAT(スペイン)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] エネルギー環境技術研究センター(CIEMAT)(スペイン)

    • Related Report
      2016 Research-status Report
  • [Int'l Joint Research] RFX研究所(イタリア)

    • Related Report
      2016 Research-status Report
  • [Int'l Joint Research] ウィスコンシン大学(米国)

    • Related Report
      2016 Research-status Report
  • [Int'l Joint Research] エネルギー環境技術研究センター(CIEMAT)(スペイン)

    • Related Report
      2015 Research-status Report
  • [Int'l Joint Research] RFX研究所(イタリア)

    • Related Report
      2015 Research-status Report
  • [Int'l Joint Research] ウィスコンシン大学(米国)

    • Related Report
      2015 Research-status Report
  • [Journal Article] Observations of sustained phase shifted magnetic islands from externally imposedm/n??=??1/1 RMP in LHD2017

    • Author(s)
      Narushima Y.、Sakakibara S.、Suzuki Y.、Watanabe K.Y.、Ohdachi S.、Takemura Y.、Yoshinuma M.、Ida K.、Castejon F.、Lopez-Bruna D.、Hegna C.C.、Kobayashi M.、Tanaka H.、Akiyama T.、Ohno N.、The LHD Experiment Group
    • Journal Title

      Nuclear Fusion

      Volume: 57 Issue: 7 Pages: 076024-076024

    • DOI

      10.1088/1741-4326/aa6dce

    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Journal Article] Distorted magnetic island formation during slowing down to mode locking in helical plasmas2017

    • Author(s)
      T. Tokuzawa, Y. Takemura, K.Y. Watanabe, S. Sakakibara, Y. Narushima, H. Tsuchiya, Y. Nagayama, S. Inagaki, K. Ida, M. Yoshinuma, K. Tanaka, Y. Suzuki, I. Yamada, and the LHD Experiment Group
    • Journal Title

      Nuclear Fusion

      Volume: 57 Issue: 7 Pages: 076003-076003

    • DOI

      10.1088/1741-4326/aa6d26

    • NAID

      120007029203

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Observation of the ballooning mode that limits the operation space of the high-density super-dense-core plasma in the LHD2017

    • Author(s)
      Ohdachi S.、Watanabe K.Y.、Tanaka K.、Suzuki Y.、Takemura Y.、Sakakibara S.、Du X.D.、Bando T.、Narushima Y.、Sakamoto R.、Miyazawa J.、Motojima G.、Morisaki T.、LHD Experiment Group
    • Journal Title

      Nuclear Fusion

      Volume: 57 Issue: 6 Pages: 066042-066042

    • DOI

      10.1088/1741-4326/aa6c1e

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Experimental observation of response to resonant magnetic perturbation and its hysteresis in LHD2015

    • Author(s)
      Y. Narushima, S. Sakakibara, S. Ohdachi, Y. Suzuki, K.Y. Watanabe, S. Nishimura, S. Satake, B. Huang, M. Furukawa, Y. Takemura, K. Ida, M. Yoshinuma, I. Yamada and The LHD Experiment Group
    • Journal Title

      Nuclear Fusion

      Volume: 55 Issue: 7 Pages: 073004-073004

    • DOI

      10.1088/0029-5515/55/7/073004

    • NAID

      120007046129

    • Related Report
      2015 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] LHDの磁気島がヒーリングする領域に与える重水素プラズマの影響2019

    • Author(s)
      成嶋吉朗
    • Organizer
      プラズマ・核融合学会 第36回年会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Magnetic field structure and plasma response field in LHD detached plasmas2018

    • Author(s)
      Y. NARUSHIMA, M. KOBAYASHI, S. SAKAKIBARA, K. WATANABE, Y. TAKEMURA, S. OHDACHI, Y. SUZUKI and LHD-Exp. Gr.
    • Organizer
      第11回 核融合エネルギー連合講演会
    • Related Report
      2018 Research-status Report
  • [Presentation] Behavior of the resonant magnetic perturbation in LHD detached plasmas2018

    • Author(s)
      Y. Narushima
    • Organizer
      Joint Meeting of US-Japan MHD Workshop and 31st ITPA MHD Disruption and Control Topical Group
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Behavior of the resonant magnetic perturbation in LHD detached plasmas2018

    • Author(s)
      Y. Narushima
    • Organizer
      2018 US-Japan MHD Workshop
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Behavior of intermediate state of magnetic islands and utilization of resonant magnetic perturbation for detached plasma in LHD2017

    • Author(s)
      Y. Narushima
    • Organizer
      22nd Workshop on MHD Stability Control
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Transition to detached plasma established by amplified resonant magnetic perturbation in LHD2017

    • Author(s)
      Y. Narushima
    • Organizer
      44th EPS Conference on Plasma Physics
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Study of plasma response of magnetic island produced by resonant magnetic perturbation in LHD deuterium plasmas2017

    • Author(s)
      Y. Narushima
    • Organizer
      21st International Stellarator-Heliotron Workshop
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Experimental observation of the ECCD on m/n = 2/1 magnetic island in LHD2017

    • Author(s)
      成嶋吉朗
    • Organizer
      Plasma Conference 2017
    • Related Report
      2017 Research-status Report
  • [Presentation] LHDのデタッチプラズマ形成時に観測される種々の共鳴摂動磁場構造2016

    • Author(s)
      成嶋吉朗、小林政弘、田中宏彦、榊原悟、大舘聡、 鈴木康浩、渡邊清政、武村勇輝、大野哲靖、LHD実験グループ
    • Organizer
      プラズマ・核融合学会 第33回年会
    • Place of Presentation
      宮城県仙台市
    • Year and Date
      2016-11-29
    • Related Report
      2016 Research-status Report
  • [Presentation] Observations of sustained phase shifted magnetic islands from externally imposed m/n = 1/1 RMP in LHD2016

    • Author(s)
      Y. Narushima, S. Sakakibara, Y. Suzuki, K. Y. Watanabe, S. Ohdachi, Y. Takemura, M. Yoshinuma, K. Ida, F. Castejon, D. Lopez-Bruna, C. C. Hegna, M. Kobayashi, H. Tanaka, T. Akiyama, N. Ohno, and the LHD Experiment Group
    • Organizer
      26th IAEA FEC
    • Place of Presentation
      Kyoto, Japan
    • Year and Date
      2016-10-17
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Presentation] LHDのデタッチ放電におけるプラズマ応答磁場構造2016

    • Author(s)
      成嶋吉朗, 小林政弘, 田中宏彦, 榊原悟, 鈴木康弘, 渡邊清政,大舘暁, 武村勇輝, 秋山毅志, 大野哲靖, LHD実験グループ
    • Organizer
      第11回 核融合エネルギー連合講演会
    • Place of Presentation
      福岡県福岡市西区
    • Year and Date
      2016-07-14
    • Related Report
      2016 Research-status Report
  • [Presentation] Structure of resonant magnetic perturbation in LHD detached plasma2016

    • Author(s)
      Y. Narushima, M. Kobayashi, H. Tanaka, S. Sakakibara, Y. Suzuki, K. Y. Watanabe, S. Ohdachi, Y. Takemura, T. Akiyama, N. Ohno, F. Castejon, D. Lopez-Bruna and the LHD Experiment Group
    • Organizer
      43rd European Physical Society Conference on Plasma Physics
    • Place of Presentation
      Leuven, Belgium
    • Year and Date
      2016-07-04
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Presentation] LHDプラズマ中の磁気島遷移時の磁気島構造2015

    • Author(s)
      Y. Narushima, S. Sakakibara, Y. Suzuki, K. Y. Watanabe, S. Ohdachi, Y. Takemura, M. Kobayashi, H. Tanaka, T. Akiyama, N. Ohno, and the LHD Experiment Group
    • Organizer
      プラズマ・核融合学会 第32回年会
    • Place of Presentation
      愛知県 名古屋大学
    • Year and Date
      2015-11-24
    • Related Report
      2015 Research-status Report
  • [Presentation] Spontaneous healing of magnetic islands in the LHD by plasma flow2015

    • Author(s)
      Y. Narushima, C. C. Hegna, S. Sakakibara, F. Castejón, K. Y. Watanabe, D. López-Bruna, S. Ohdachi, Y. Suzuki, S. Nishimura, M. Furukawa, Y. Takemura, K. Ida, M. Yoshinuma, I. Yamada, M. Yokoyama, S. Satake, B. Huang, and the LHD Experiment Group
    • Organizer
      20th International Stellarator-Heliotron Workshop
    • Place of Presentation
      ドイツ グライフスバルト
    • Year and Date
      2015-10-05
    • Related Report
      2015 Research-status Report
    • Int'l Joint Research

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Published: 2015-04-16   Modified: 2022-02-16  

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