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Screening effect of high Z impurity in stochastic magnetic field

Research Project

Project/Area Number 23760816
Research Category

Grant-in-Aid for Young Scientists (B)

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

Principal Investigator

KOBAYASHI Masahiro  核融合科学研究所, ヘリカル研究部, 助教 (30399307)

Co-Investigator(Renkei-kenkyūsha) MORITA Shigeru  核融合科学研究所, ヘリカル研究部, 教授 (80174423)
GOTO Motoshi  核融合科学研究所, ヘリカル研究部, 准教授 (00290916)
MASUZAKI Suguru  核融合科学研究所, ヘリカル研究部, 准教授 (80280593)
Research Collaborator CHUNFENG Dong  核融合科学研究所, COE, 研究員
YUEHE Feng  マックスプランク研究所, 主任研究員
Project Period (FY) 2011 – 2012
Project Status Completed (Fiscal Year 2012)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2012: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2011: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Keywords周辺プラズマ / ストキャスティック磁場 / 不純物輸送 / 国際情報交換 / プラズマ・核融合 / モデル化
Research Abstract

Impurity transport has been analyzed in edge stochastic layer of magnetically confined fusion devices, using three dimensional numerical simulation and spectroscopy measurements. It has been confirmed that there is clear screening effect on impurity at high density plasma operation. It is also found that the screening effect is available for high Z impurity (Fe). These screening effects have been found due to the geometrical effects of the stochastic magnetic field.

Report

(3 results)
  • 2012 Annual Research Report   Final Research Report ( PDF )
  • 2011 Research-status Report
  • Research Products

    (9 results)

All 2013 2012 2011

All Journal Article (1 results) (of which Peer Reviewed: 1 results) Presentation (8 results)

  • [Journal Article] Edge impurity transport study in the stochastic layer of LHD and the scrape-off layer of HL-2A2013

    • Author(s)
      M. Kobayashi
    • Journal Title

      Nuclear Fusion

      Volume: 53 Issue: 3 Pages: 33011-33011

    • DOI

      10.1088/0029-5515/53/3/033011

    • Related Report
      2012 Annual Research Report 2012 Final Research Report
    • Peer Reviewed
  • [Presentation] Measurements of hydrogen/impurity emission distribution in the stochastic layer of LHD and comparison with fluid plasma transport model in attached and detached divertor plasma2013

    • Author(s)
      M. Kobayashi, S. Morita, M. Goto, S. Masuzaki, T. Morisaki, the LHD experiment group, Y. Feng
    • Organizer
      6th International Workshop on Stochasticity in Fusion Plasmas
    • Place of Presentation
      ユーリッヒ、ドイツ
    • Related Report
      2012 Final Research Report
  • [Presentation] Measurements of hydrogen/impurity emission distribution in the stochastic layer of LHD and comparison with fluid plasma transport model in attached and detached divertor plasma2013

    • Author(s)
      小林政弘
    • Organizer
      6th International Workshop on Stochasticity in Fusion Plasmas
    • Place of Presentation
      Juelich, Germany
    • Related Report
      2012 Annual Research Report
  • [Presentation] Benchmark of Monte Carlo scheme of EMC3 dealing with non-uniform cross-field transport coefficients and implementation in LHD2013

    • Author(s)
      小林政弘
    • Organizer
      14th International Workshop on Plasma Edge Theory in Fusion Devices
    • Place of Presentation
      Cracow, Poland
    • Related Report
      2012 Annual Research Report
  • [Presentation] ヘリカル装置 LHDとトカマク装置HL-2Aにおける周辺不純物 図4 (a) 鉄(15+)密度のプラズマ密度依 存性。○:実験結果、-:数値シミュレー ション。(b) 数値シミュレーションによっ て得られた鉄(15+)密度の径方向分布。 輸送の比較2012

    • Author(s)
      小林政弘、森田繁、C.F.Dong, Y.Feng、 後藤基志、増崎貴
    • Organizer
      第29回プラズマ・核融合学会年会
    • Place of Presentation
      福岡県春日市
    • Related Report
      2012 Final Research Report
  • [Presentation] "Low Concentration of Iron as First Wall Material in LHD Plasmas with Edge Ergodic Layer2012

    • Author(s)
      S.Morita, C.F.Dong, M.Kobayashi, M.Goto, I.Murakami, 他15名、S. Masuzaki
    • Organizer
      24th IAEA Fusion Energy Conference
    • Place of Presentation
      サンディエゴ、アメリカ(IAEA CN-197)
    • Related Report
      2012 Final Research Report
  • [Presentation] ヘリカル装置LHDとトカマク装置HL-2Aにおける周辺不純物輸送の比較2012

    • Author(s)
      小林政弘
    • Organizer
      第29回プラズマ・核融合学会年会
    • Place of Presentation
      福岡県春日市
    • Related Report
      2012 Annual Research Report
  • [Presentation] Low Concentration of Iron as First Wall Material in LHD Plasmas2012

    • Author(s)
      森田繁
    • Organizer
      24th IAEA Fusion Energy Conference – IAEA CN-197
    • Place of Presentation
      San Diego, USA
    • Related Report
      2012 Annual Research Report
  • [Presentation] LHDの周辺ストキャスティック層における不純物輸送の流体モデリングと実験観測の比較2011

    • Author(s)
      小林政弘
    • Organizer
      プラズマ・核融合学会年会
    • Place of Presentation
      石川県金沢市
    • Related Report
      2011 Research-status Report

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Published: 2011-08-05   Modified: 2019-07-29  

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