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2009 Fiscal Year Final Research Report

Interaction of Alfven eigen-mode on energetic-particles in helical systems.

Research Project

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Project/Area Number 18340189
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Plasma science
Research InstitutionNational Institute for Fusion Science

Principal Investigator

OSAKABE Masaki  National Institute for Fusion Science, 大型ヘリカル研究部, 准教授 (90280601)

Co-Investigator(Kenkyū-buntansha) TAKEIRI Yasuhiko  核融合科学研究所, 大型ヘリカル研究部, 教授 (60179603)
TODO Yasushi  核融合科学研究所, シミュレーション科学研究部, 教授 (00249971)
NAGAOKA Kenichi  核融合科学研究所, 大型ヘリカル研究部, 助教 (20353443)
Project Period (FY) 2006 – 2009
Keywordsプラズマ物理 / アルフベン固有モード / 高エネルギー粒子輸送 / 磁場閉じ込め核融合
Research Abstract

The interaction between Alfven Eigen-mode (AE) and fast-ions are experimentally investigated. The temporal evolutions of fast-ion energy spectra during the bursting activity of AE showed formation of clump and hole pairs in the energy spectra of fast-ions. It was found the energy of the clump decreases with the decrease of the mode frequency. The extension of simulation code MEGA to three dimensional magnetic field was completed with this project. A new simulation code AE3D, which calculates the eigen-function of AE, was also developed. Using these codes, a new interpretation for those experimental data was provided.

  • Research Products

    (25 results)

All 2010 2009 2008 2007 2006

All Journal Article (15 results) (of which Peer Reviewed: 15 results) Presentation (10 results)

  • [Journal Article] Fast-ion confinement studies on LHD2010

    • Author(s)
      M. Osakabe, M. Isobe, S. Murakami, S. Kobayashi, K. Saito, R. Kumazawa, T. Mutoh, T. Ozaki, M. Nishiura, E. Veshev, T. Seki, Y. Takeiri, O. Kaneko, K. Nagaoka, T. Tokuzawa, K. Ogawa, K. Toi, S. Yamamoto, M. Sasao, T. Watanabe, LHD experiment group
    • Journal Title

      to appear in the LHD special issue of Fusion Science and Technology 58,(9pages)

    • Peer Reviewed
  • [Journal Article] Nonlinear magnetohydrodynamic effecs on Alfven eigenmode evolution and zonal flow generation2010

    • Author(s)
      Y. Todo, H.L. Berk, B.N. Breizman
    • Journal Title

      to appear in Nuclear Fusion 50

    • Peer Reviewed
  • [Journal Article] 6. 4 Numerical Analyses of Energetic Particles in LHD2010

    • Author(s)
      Y. Todo, S. Murakami, T. Yamamoto, A. Fukuyama, D.A. Spong, S. Yamamoto, M. Osakabe, N. Nakajima
    • Journal Title

      to appear in the LHD special issue of Fusion Science and Technology 58,(12pages)

    • Peer Reviewed
  • [Journal Article] Clustered frequency analysis of shear Alfven modes in stellarators2010

    • Author(s)
      D.A. Spong, E. D'Azevedo, Y. Todo
    • Journal Title

      Physics of Plasmas 17

      Pages: 022106

    • Peer Reviewed
  • [Journal Article] Simulation study of ballooning modes in LHD2010

    • Author(s)
      Y. Todo, N. Nakajima, M. Sato, H. Miura
    • Journal Title

      to appear in Plasma and Fusion Research 5,(4pages)

    • Peer Reviewed
  • [Journal Article] Evaluation of fast-ion confinement using radially injected neutral beam on LHD2010

    • Author(s)
      M. Osakabe, T. Ito
    • Journal Title

      to appear in Plasma and Fusion Research 5,(4pages)

    • Peer Reviewed
  • [Journal Article] Simulation study of energetic ion transport due to Alfven eigenmodes in LHD plasma2008

    • Author(s)
      Y. Todo, N. Nakajima, M. Osakabe, S. Yamamoto, D.A. Spong
    • Journal Title

      Plasma and Fusion Research 3

      Pages: 1074

    • Peer Reviewed
  • [Journal Article] Radial Transport Characteristics of Fast Ions Due to Energetic-Particle Modes inside the Last Closed-Flux Surface in the Compact Helical System2008

    • Author(s)
      K. Nagaoka, M. Isobe, K. Toi, A. Shimizu, A. Fujisawa, S. Ohshima, H. Nakano, M. Osakabe, Y. Todo, et. al.
    • Journal Title

      Phys. Rev. Lettres 100

      Pages: 065005

    • Peer Reviewed
  • [Journal Article] Local observations of fast ion responses to energetic particle modes using a directional probe in the Compact Helical System (CHS)2008

    • Author(s)
      K. Nagaoka, M. Isobe, K. Toi, K. Goto, T. Ito, Y. Todo, M. Osakabe, S. Ohshima, A. Shimizu, A. Fujisawa, H. Nakano, Y. Takeiri, et. al.
    • Journal Title

      Nuclear Fusion 48

      Pages: 084006

    • Peer Reviewed
  • [Journal Article] Fast ion measurement using a hybrid directional probe in the large helical device2008

    • Author(s)
      K. Nagaoka, K.Y. Watanabe, M. Osakabe, Y. Takeiri, et. al.
    • Journal Title

      Rev. Sci. Instrum. 79

      Pages: 10E523

    • Peer Reviewed
  • [Journal Article] Fast ion charge exchange spectroscopy measurement using a radially injected neutral beam on the large helical device2008

    • Author(s)
      M. Osakabe, S. Murakami, M. Yoshinuma, K. Ida, A. Whiteford, M. Goto, D. Kato, T. Kato, K. Nagaoka, T. Tokuzawa, Y. Takeiri, et. al.
    • Journal Title

      Rev. Sci. Instrum. 79

      Pages: 10E519

    • Peer Reviewed
  • [Journal Article] Construction of a Gyrokinetic Plasma Simulation Model for Electromagnetic Phenomena2007

    • Author(s)
      Y. Todo, A. Ito
    • Journal Title

      Plasma and Fusion Research 2

      Pages: 020

    • Peer Reviewed
  • [Journal Article] Progress in the ITER Physics Basis Chapter 5: Physics of energetic ions2007

    • Author(s)
      A. Fasoli, C. Gormenzano, H.L. Berk, B. Breizman, S. Briguglio, D.S. Darrow, N. Gorelenkov, W.W. Heidbrink, A. Jaun, S.V. Konovalov, R. Nazikian, J.-M. Noterdaeme, S. Sharapov, K. Shinohara, D. Testa, K. Tobita, Y. Todo, G. Vlad, F. Zonca
    • Journal Title

      Nuclear Fusion 47

      Pages: 264

    • Peer Reviewed
  • [Journal Article] Experimental observations of enhanced radial transport of Energetic Particles with Alfven Eigen mode on LHD2006

    • Author(s)
      M. Osakabe, S. Yamamoto, K. Toi, Y. Takeiri, S. Sakakibara, K. Nagaoka, et. al.
    • Journal Title

      Nuclear Fusion 46

      Pages: 917-916

    • Peer Reviewed
  • [Journal Article] Properties of energetic-particle continuum modes destabilized by energetic ions with beam-like velocity distributions2006

    • Author(s)
      Y. Todo
    • Journal Title

      Phys. of Plasmas 13

      Pages: 082503

    • Peer Reviewed
  • [Presentation] Evaluation of fast-ion confinement using radially injected neutral beam on LHD2009

    • Author(s)
      M. Osakabe, 他
    • Organizer
      第19回国際土岐コンファレンス
    • Place of Presentation
      土岐(岐阜)
    • Year and Date
      20091208-20091211
  • [Presentation] Clump and Hole formation in the energetic particle spectra by the TAE and their behaviours during the mode activities on LHD2009

    • Author(s)
      M. Osakabe, 他
    • Organizer
      第11回高エネルギー粒子に関するIAEA専門家会議
    • Place of Presentation
      キエフ(ウクライナ)
    • Year and Date
      20090921-20090923
  • [Presentation] Interaction of energeticparticles, Alfven eigenmode, and zonal flow and fields2009

    • Author(s)
      Y. Todo, 他
    • Organizer
      第11回高エネルギー粒子に関するIAEA専門家会議
    • Place of Presentation
      キエフ(ウクライナ)
    • Year and Date
      20090921-20090923
  • [Presentation] Fast-ion studies near neo-classically optimized configurations of LHD2009

    • Author(s)
      M. Osakabe, 他
    • Organizer
      第36回プラズマ物理に関する欧州物理学会年会
    • Place of Presentation
      ソフィア(ブルガリア)
    • Year and Date
      20090629-20090703
  • [Presentation] Simulation study of ballooning modes in LHD2009

    • Author(s)
      Y. Todo, 他
    • Organizer
      第19回国際土岐コンファレンス
    • Place of Presentation
      土岐(岐阜)
    • Year and Date
      2009-12-08
  • [Presentation] Fast ion charge exchange spectroscopy measurement using a radially injected neutral beam on the large helical device2008

    • Author(s)
      M. Osakabe, 他
    • Organizer
      第17回高温プラズマ計測会議
    • Place of Presentation
      アルバカーキ(米国)
    • Year and Date
      20080511-20080515
  • [Presentation] Fast ion measurement using a hybrid directional probe in the large helical device2008

    • Author(s)
      K. Nagaoka, 他
    • Organizer
      第17回高温プラズマ計測会議
    • Place of Presentation
      アルバカーキ(米国)
    • Year and Date
      20080511-20080515
  • [Presentation] Energy shift of the resonant particles being associated frequency shift of TAE-mode on LHD2007

    • Author(s)
      M. Osakabe, 他
    • Organizer
      第1 0回高エネルギー粒子に関するIAEA専門家会議
    • Place of Presentation
      クロスターゼーオン(ドイツ)
    • Year and Date
      20071007-20071012
  • [Presentation] Local Observation of Energetic Particle Mode Bursts and Fast Ion Responses in the Compact Helical System2007

    • Author(s)
      K. Nagaoka, 他
    • Organizer
      第10回高エネルギー粒子に関するIAEA専門家会議
    • Place of Presentation
      クロスターゼーオン(ドイツ)
    • Year and Date
      20071007-20071012
  • [Presentation] Numerical analysis of energetic ion transport due to Alfven eigenmodes in an LHD plasma2007

    • Author(s)
      Y. Todo, 他
    • Organizer
      第1 0回高エネルギー粒子に関するIAEA専門家会議
    • Place of Presentation
      クロスターゼーオン(ドイツ)
    • Year and Date
      20071007-20071012

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Published: 2011-06-18   Modified: 2016-04-21  

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