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Simulation study of toroidal flow generation mechanism by electron cyclotron heating

Research Project

Project/Area Number 18K03582
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 InstitutionKyoto University

Principal Investigator

Murakami Sadayoshi  京都大学, 工学研究科, 教授 (40249967)

Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2020: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2018: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywordsトロイダル流 / 電子サイクロトロン加熱 / 高速電子 / トロイダルトルク / ヘリカル / トカマク / 非軸対称磁場 / 高エネルギー電子 / トロイダルプラズマ / シミュレーション / ドリフト運動論方程式
Outline of Final Research Achievements

Toroidal flow driving mechanism related to electron cyclotron heating (ECH) is investigated, focusing on the role of the JxB torque associated with the radial flux of supra-thermal electrons caused by the non-axisymmetric magnetic field. As a result, it is quantitatively shown that the toroidal flow profile is affected by the supra-thermal electrons from ECH in LHD and HSX plasmas. In addition, the effect of the JxB torque associated with the electron radial flux due to ECH on the toroidal flow is quantitatively analyzed by introducing a toroidal ripple field in the JT-60U plasma. As a result, it is found that the toroidal torque due to ECH could not explain the experimental results.

Academic Significance and Societal Importance of the Research Achievements

トーラス型磁場閉じ込め核融合装置において,トロイダル流やそのシアが乱流抑制や電磁流体的不安定性の抑制に重要であることが知られている.本研究では,3次元磁場におけるECHによる高速電子が径方向拡散によりJxBトルクを発生させ,トロイダル流駆動する可能性を検証した.LHDおよびHSXプラズマにおけるシミュレーションと実験結果との比較により,ヘリカル系プラズマにおいては,ECHを積極的に用いてトロイダル流を制御できることが示された.本研究では,効率的な核融合炉の開発に大きく貢献したと考えられる.

Report

(4 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (25 results)

All 2021 2020 2019 2018 Other

All Int'l Joint Research (3 results) Journal Article (5 results) (of which Int'l Joint Research: 4 results,  Peer Reviewed: 4 results,  Open Access: 2 results) Presentation (17 results) (of which Int'l Joint Research: 14 results)

  • [Int'l Joint Research] University of Wisconsin-Madison(米国)

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research] University of Wisconsin Madison(米国)

    • Related Report
      2019 Research-status Report
  • [Int'l Joint Research] Wisconsin University at Madison(米国)

    • Related Report
      2018 Research-status Report
  • [Journal Article] Magnetic Configuration and Heating Location Dependences of Toroidal Torques by Electron Cyclotron Heating in LHD2021

    • Author(s)
      Yamamoto Y., Murakami S.
    • Journal Title

      Plasma and Fusion Research

      Volume: 16 Issue: 0 Pages: 2403043-2403043

    • DOI

      10.1585/pfr.16.2403043

    • NAID

      130008028413

    • ISSN
      1880-6821
    • Year and Date
      2021-03-19
    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Mechanism of toroidal flow generation by electron cyclotron heating in HSX and LHD plasmas2021

    • Author(s)
      Y. YAMAMOTO , S. MURAKAMI , C.C. CHANG , S.T.A. KUMAR , J.N. TALMADGE , K.M. LIKIN , D.T. ANDERSON , H. YAMAGUCHI , H. TAKAHASHI , K. IDA , M. YOSHINUMA , LHD EXP. GROUP
    • Journal Title

      Proc. of 25th IAEA Fusion Energy Conference (FEC 2020)

      Volume: -

    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Journal Article] Effect of the Pfirsch-Schlueter flow on the inboard/outboard asymmetry of the toroidal flow in LHD2020

    • Author(s)
      Yamamoto Y.,Murakami S.,Takahashi H.,Ida K.,Yoshinuma M.,Chen J.
    • Journal Title

      Physics of Plasmas

      Volume: 27 Issue: 4 Pages: 042514-042514

    • DOI

      10.1063/1.5126526

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Simulation Study of Neutral Beam Injection Heating in the HSX Plasma2019

    • Author(s)
      MORISHITA Yuya、MURAKAMI Sadayoshi、LIKIN Konstantin、ANDERSON David T.
    • Journal Title

      Plasma and Fusion Research

      Volume: 14 Issue: 0 Pages: 3403152-3403152

    • DOI

      10.1585/pfr.14.3403152

    • NAID

      130007730083

    • ISSN
      1880-6821
    • Year and Date
      2019-09-25
    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Estimation of the <i>j </i>× <i>B </i>Force Produced by Electron Cyclotron Heating in HSX Plasma2019

    • Author(s)
      YAMAMOTO Yasuhiro、MURAKAMI Sadayoshi、CHANG Ching-Chieh、KUMAR Santhosh T.A.、TALMADGE Joseph N.、LIKIN Konstantin、ANDERSON David T.
    • Journal Title

      Plasma and Fusion Research

      Volume: 14 Issue: 0 Pages: 3403105-3403105

    • DOI

      10.1585/pfr.14.3403105

    • NAID

      130007688030

    • ISSN
      1880-6821
    • Year and Date
      2019-07-11
    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Mechanism of toroidal flow generation by Electron Cyclotron Heating in HSX and LHD Plasmas2021

    • Author(s)
      Y. Yamamoto, S. Murakami, S.T.A. Kumar, J.N. Talmadge, K.M. Likin, D.T. Anderson, H.Yamaguchi, C.C. Chang, H. Takahashi, K. Ida, M. Yoshinuma and LHD Exp. Group
    • Organizer
      IAEA Fusion Energy Conference 2020
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Study of net toroidal torque generation by radial diffusion of ECH supra-thermal electrons in tokamak plasmas2021

    • Author(s)
      S. Murakami, Y. Yamamoto, D. Iio and Mitsuru Honda
    • Organizer
      47th European Physical Society Conference on Plasma Physics
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Magnetic Configuration and Heating Location Dependences of the Toroidal Torques by ECH in LHD2020

    • Author(s)
      Y. Yamamoto, S. Murakami, C.C. Chang, H. Takahashi, K. Ida, M. Yoshinuma
    • Organizer
      The 29th International Toki Conference
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Effects of Toroidal Field Ripple on Toroidal Torque by Electron Cyclotron Heating in JT-60U Plasma2020

    • Author(s)
      H. Ishiguro, S. Murakami, Y. Yamamoto, M. Honda
    • Organizer
      The 29th International Toki Conference
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] ヘリカルプラズマにおけるECHによるトロイダル流の駆動2020

    • Author(s)
      山本泰弘,村上定義,他
    • Organizer
      第37回プラズマ・核融合学会 年会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Simulation study of a net toroidal torque generation by suprathermal electrons of ECH in non-axisymmetric tokamak plasmas2019

    • Author(s)
      S. Murakami, et al
    • Organizer
      23rd TOPICAL CONFERENCE ON RADIOFREQUENCY POWER IN PLASMAS
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Modeling of supra-thermal electron flux and toroidal torque by ECH in non-axisymmetric toroidal plasmas2019

    • Author(s)
      S. Murakami, et al.
    • Organizer
      22nd International Stellarator Heliotron Workshop
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Effects of Electron Cyclotron Heating on the Toroidal Flow in Helical Plasmas2019

    • Author(s)
      Y. Yamamoto, S. Murakami, et al.
    • Organizer
      22nd International Stellarator Heliotron Workshop
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Modeling of supra-thermal electron flux and toroidal torque by ECH in non-axisymmetric toroidal plasmas2019

    • Author(s)
      S. Murakami, et al.
    • Organizer
      61st Annual Meeting of the APS Division of Plasma Physics
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Effects of Electron Cyclotron Heating on the Toroidal Flow in Helical Plasmas2019

    • Author(s)
      Y. Yamamoto, S. Murakami, et al.
    • Organizer
      61st Annual Meeting of the APS Division of Plasma Physics
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] 非軸対称トカマクにおけるECHによるトロイダル流駆動機構の解明2019

    • Author(s)
      村上定義,他
    • Organizer
      日本物理学会第74回年次大会
    • Related Report
      2018 Research-status Report
  • [Presentation] Effects of Electron Cyclotron Heating on the Toroidal Flow in Helical Plasmas2019

    • Author(s)
      Y. Yamamoto, S. Murakami, et al.
    • Organizer
      Korea-Japan Workshop on Physics and Technology of Heating and Current Drive
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Simulation Study of Toroidal FLow Generationn by ECH in Non-axisymmetric Toroidal Plasmas2018

    • Author(s)
      S. Murakami, et al.
    • Organizer
      Japan-Korea Workshop on Modeling and Simulation of Magnetic Fusion Plasmas
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Simulation study of toroidal flow generation by ECH in non-axisymmetric toroidal plasmas2018

    • Author(s)
      S. Murakami, et al.
    • Organizer
      Joinnt Varenna-Lausanne International Workshop on "Theory of Fusion Plasmas"
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Simulation study of toroidal flow generation by ECH in non-axisymmetric toroidal plasmas2018

    • Author(s)
      S. Murakami, et al.
    • Organizer
      60th Annual Meeting of the APS Division of Plasma Physics
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Effects of Electron Cyclotron Heating on the Toroidal Flow in Helical Plasmas2018

    • Author(s)
      Y. Yamamoto, S. Murakami, et al.
    • Organizer
      27th Internatinal Toki Conference
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Simulation study of toroidal flow generation by ECH in non-axisymmetric toroidal plasmas2018

    • Author(s)
      村上定義,他
    • Organizer
      プラズマ・核融合学会第35回年会
    • Related Report
      2018 Research-status Report

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Published: 2018-04-23   Modified: 2022-01-27  

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