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先進核融合プラズマにおける電子加熱の乱流輸送への影響

Research Project

Project/Area Number 19K03805
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 14020:Nuclear fusion-related
Research InstitutionNational Institutes for Quantum Science and Technology

Principal Investigator

吉田 麻衣子  国立研究開発法人量子科学技術研究開発機構, 那珂研究所 先進プラズマ研究部, グループリーダー (20391261)

Co-Investigator(Kenkyū-buntansha) 金 史良  国立研究開発法人量子科学技術研究開発機構, 那珂核融合研究所 先進プラズマ研究部, 研究員 (40846747)
Project Period (FY) 2019-04-01 – 2025-03-31
Project Status Granted (Fiscal Year 2023)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywordsイオン系乱流 / 電子系乱流 / 高エネルギー粒子効果 / プラズマ制御 / 磁気シア / 電場シア / 電子加熱 / 先進核融合プラズマ / 乱流輸送
Outline of Research at the Start

燃焼プラズマ条件に近い電子加熱割合(80%)が可能で、低波数から高波数揺動を検出できる揺動計測器群と高空間・時間分解能を有する分布計測器群を有し、先進プラズマ運転領域(高ベータ、弱・負磁気シア)を持つトカマク型実験装置を活用し、電子加熱時のイオン系乱流と電子系乱流の振る舞い、プラズマ輸送・分布の変化を詳細に調べる。スーパーコンピュータを用いて乱流輸送シミュレーションを行い、得られた実験データと比較することで、輸送物理の理解を行うと共に、電子加熱による粒子及びエネルギー閉じ込め劣化を緩和する運転領域を見つけ出す。

Outline of Annual Research Achievements

国際熱核融合実験炉(ITER)や原型炉における燃焼プラズマでは、核融合反応により生じたアルファ粒子による電子加熱が主体となる。本研究では、燃焼プラズマで課題となる電子加熱が支配的な領域でのプラズマ乱流輸送の解明、将来の装置でのプラズマ分布予測と運転シナリオ開発を目指し、プラズマ輸送を決めるイオン系乱流と電子系乱流の特性と相関を、実験と理論の両方のアプローチにより明らかにすることを目的としている。
令和5年度は、JT-60Uにおいて、正イオン中性粒子ビームに負イオン中性粒子ビームを重畳したときのエネルギー閉じ込めと熱輸送特性を調べた。負イオン中性粒子ビームにより加熱パワーを増加すると、エネルギー閉じ込めが改善し、局所的にも分布の硬直性が破れて、内部輸送障壁での熱輸送の改善(イオン温度勾配の増加)が見られた。高速イオンの効果から本結果をまとめ、The 30th Transport and Confinement Topical Group Meeting及び、JT-60SA実験チーム輸送と閉じ込めトピカルグループにて発表した。

Current Status of Research Progress
Current Status of Research Progress

3: Progress in research has been slightly delayed.

Reason

令和5年度は、乱流輸送解析およびシミュレーションを実行する予定であったが、データ解析と計算器資源の不足から実行ができなかった。

Strategy for Future Research Activity

令和5年度実施できなかった乱流シミュレーションを行い、実験とシミュレーションを比較することで、高エネルギーで且つ電子加熱時のイオン系乱流と電子系乱流の相関、乱流と輸送の相関を明らかにする。これらをまとめて科学雑誌に投稿する

Report

(5 results)
  • 2023 Research-status Report
  • 2022 Research-status Report
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (23 results)

All 2023 2022 2021 2020 2019 Other

All Int'l Joint Research (7 results) Journal Article (11 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 11 results,  Open Access: 6 results) Presentation (5 results) (of which Int'l Joint Research: 2 results,  Invited: 1 results)

  • [Int'l Joint Research] General Atomics(米国)

    • Related Report
      2023 Research-status Report
  • [Int'l Joint Research] General Atomics(米国)

    • Related Report
      2022 Research-status Report
  • [Int'l Joint Research] General Atomics(米国)

    • Related Report
      2021 Research-status Report
  • [Int'l Joint Research] Aix-Marseille University(フランス)

    • Related Report
      2021 Research-status Report
  • [Int'l Joint Research] General Atomics(米国)

    • Related Report
      2020 Research-status Report
  • [Int'l Joint Research] Aix-Marseille University(フランス)

    • Related Report
      2020 Research-status Report
  • [Int'l Joint Research] General Atomics(米国)

    • Related Report
      2019 Research-status Report
  • [Journal Article] Impact of avalanche type of transport on internal transport barrier formation in tokamak plasmas2023

    • Author(s)
      Kin F.、Itoh K.、Bando T.、Shinohara K.、Oyama N.、Terakado A.、Yoshida M.、Sumida S.
    • Journal Title

      Scientific Reports

      Volume: 13 Issue: 1 Pages: 1-9

    • DOI

      10.1038/s41598-023-46978-0

    • Related Report
      2023 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Modification of a machine learning-based semi-empirical turbulent transport model for its versatility2023

    • Author(s)
      E. Narita, M. Honda, M. Nakata, N. Hayashi, T. Nakayama, M. Yoshida
    • Journal Title

      Contributions to Plasma Physics

      Volume: 2023 Issue: 5-6 Pages: 1-11

    • DOI

      10.1002/ctpp.202200152

    • Related Report
      2023 Research-status Report 2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Completion of JT-60SA construction and contribution to ITER2022

    • Author(s)
      Kamada Y.、Di Pietro E.、Hanada M.、Barabaschi P.、Ide S.、Davis S.、Yoshida M.、Giruzzi G.、Sozzi C.、the JT-60SA Integrated Project Team
    • Journal Title

      Nuclear Fusion

      Volume: 62 Issue: 4 Pages: 042002-042002

    • DOI

      10.1088/1741-4326/ac10e7

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Experimental evaluation of avalanche type of electron heat transport in magnetic confinement plasmas2022

    • Author(s)
      Kin F.、Itoh K.、Bando T.、Shinohara K.、Oyama N.、Yoshida M.、Kamiya K.、Sumida S.
    • Journal Title

      Nuclear Fusion

      Volume: 63 Issue: 1 Pages: 016015-016015

    • DOI

      10.1088/1741-4326/aca341

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Plasma physics and control studies planned in JT-60SA for ITER and DEMO operations and risk mitigation2022

    • Author(s)
      Maiko Yoshida, Gerardo Giruzzi, et., al,
    • Journal Title

      Plasma Physics and Controlled Fusion

      Volume: 64 Issue: 5 Pages: 054004-054004

    • DOI

      10.1088/1361-6587/ac57a0

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] On Collapses in Strong Reversed Shear Plasmas During or Just After Plasma Current Ramp-Up in JT-60U2021

    • Author(s)
      BANDO Takahiro、TOJO Hiroshi、TAKECHI Manabu、AIBA Nobuyuki、WAKATSUKI Takuma、YOSHIDA Maiko、INOUE Shizuo、MATSUNAGA Go
    • Journal Title

      Plasma and Fusion Research

      Volume: 16 Issue: 0 Pages: 1402089-1402089

    • DOI

      10.1585/pfr.16.1402089

    • NAID

      130008064609

    • ISSN
      1880-6821
    • Year and Date
      2021-07-05
    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Quasilinear turbulent particle and heat transport modelling with a neural-network- based approach founded on gyrokinetic calculations and experimental data2021

    • Author(s)
      E. Narita, M. Honda, M. Nakata, M. Yoshida and N. Hayashi
    • Journal Title

      Nuclear Fusion

      Volume: 61 Issue: 11 Pages: 116041-116041

    • DOI

      10.1088/1741-4326/ac25be

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Torque to counter-current direction driving low frequency tearing modes in JT-60U2021

    • Author(s)
      T. Bando, M. Honda, S. Inoue, M. Yoshida, G. Matsunaga, A. Isayama, M. Takechi, K. Shinohara, and S. Sumida
    • Journal Title

      Plasma Physics and Controlled Fusion

      Volume: 63 Issue: 11 Pages: 115005-115005

    • DOI

      10.1088/1361-6587/ac11b7

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Application of transient transport analysis method for modulation experiment2021

    • Author(s)
      Y. Ohtani, M. Yoshida, M. Honda, and E. Narita
    • Journal Title

      AIP Advances

      Volume: 11 Issue: 8 Pages: 085306-085306

    • DOI

      10.1063/5.0056982

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Magnetic shear effect on plasma transport at T e/T i~1 through electron cyclotron heating in DIII-D plasmas2020

    • Author(s)
      Yoshida M.、McKee G.R.、Petty C.C.、Grierson B.A.、Nakata M.、Rost C.、Rhodes T.L.、Ernst D.R.、Garofalo A.M.
    • Journal Title

      Nuclear Fusion

      Volume: 61 Pages: 016013-016013

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Impact of fast ions on a trapped-electron-mode dominated plasma in a JT-60U hybrid scenario2020

    • Author(s)
      Mazzi S.、Zarzoso D.、Garcia J.、Gorler T.、Di Siena A.、Camenen Y.、Benkadda S.、Yoshida M.、Hayashi N.、Shinohara K.
    • Journal Title

      Nuclear Fusion

      Volume: 60 Pages: 046026-046026

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Fast ion effect on thermal transport in negative based neutral beam heated JT-60U plasmas2023

    • Author(s)
      吉田麻衣子、成田絵美、隅田修平
    • Organizer
      The 30th Transport and Confinement Topical Group Meeting
    • Related Report
      2023 Research-status Report
    • Int'l Joint Research
  • [Presentation] JT-60Uにおける負イオン中性粒子ビーム印加時の熱輸送特性2022

    • Author(s)
      吉田麻衣子、成田絵美、隅田修平
    • Organizer
      第39回プラズマ・核融合学会年会
    • Related Report
      2022 Research-status Report
  • [Presentation] Plasma Physics and Control Studies in JT-60SA for ITER Scenario Development and Risk Mitigation2021

    • Author(s)
      Maiko Yoshida, Gerardo Giruzzi, JT-60SA Team
    • Organizer
      The 47th European Physical Society Conference on Plasma Physics
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Gyrokinetic analysis of isotope effects on particle transport in JT-60U2019

    • Author(s)
      E. Narita, M. Honda , M. Nakata, M. Yoshida and N. Hayashi
    • Organizer
      23th Meeting of the ITPA Transport and Confinement Topical Group
    • Related Report
      2019 Research-status Report
  • [Presentation] Favorable Transport Properties of the Wide Pedestal QH-Mode Regime2019

    • Author(s)
      D. R. Ernst, K.H. Burrell, C. C. Petty, M. Yoshida 他18名
    • Organizer
      2019 US Transport Task Force Workshop
    • Related Report
      2019 Research-status Report

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Published: 2019-04-18   Modified: 2024-12-25  

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