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Comparative Study of Confinement Physics in Toroidal Plasmas

Research Project

Project/Area Number 08045027
Research Category

Grant-in-Aid for international Scientific Research

Allocation TypeSingle-year Grants
SectionUniversity-to-University Cooperative Research
Research Field プラズマ理工学
Research InstitutionNational Institute for Fusion Science

Principal Investigator

HAYASHI Takaya  National Institute for Fusion Science, Theory and Computer Simulation Center, Professor, 理論シミュレーション研究センター, 教授 (60156445)

Co-Investigator(Kenkyū-buntansha) NAKAJIMA Noriyoshi  National Institute for Fusion Science, Large Helical Device Project, Associate P, 大型ヘリカル研究部, 助教授 (30172315)
KUMAZAWA Ryuhei  National Institute for Fusion Science, Large Helical Device Project, Associate P, 大型ヘリカル研究部, 助教授 (70109354)
WATARI Tetsuo  National Institute for Fusion Science, Large Helical Device Project, Professor, 大型ヘリカル研究部, 教授 (60093085)
KAWAHATA Kazuo  National Institute for Fusion Science, Large Helical Device Project, Professor, 大型ヘリカル研究部, 教授 (60109353)
SATO Tetsuya  National Institute for Fusion Science, Theory and Computer Simulation Center, Pr, 理論シミュレーション研究センター, 教授 (80025395)
横山 雅之  核融合科学研究所, 大型ヘリカル研究部(理論・データ解析研究系), 助手 (60290920)
市口 勝治  核融合科学研究所, 理論データ解析研究系, 助手 (90211739)
関 哲夫  核融合科学研究所, プラズマ加熱研究系, 助手 (60260048)
田中 謙治  核融合科学研究所, 大型ヘリカル研究部, 助手 (50260047)
松岡 啓介  核融合科学研究所, 大型ヘリカル研究部, 教授 (70023736)
長山 好夫  核融合科学研究所, 大型ヘリカル研究部, 助教授 (10126138)
小森 彰夫  核融合科学研究所, 大型ヘリカル研究部, 助教授 (50143011)
相良 明男  核融合科学研究所, 大型ヘリカル研究部, 助教授 (20187058)
高丸 尚教  核融合科学研究所, 理論・シミュレーション研究センター, 助手 (20241234)
藤原 正巳  核融合科学研究所, 大型ヘリカル研究部, 教授 (10023722)
渡邉 智彦  核融合科学研究所, 理論・シミュレーション研究センター, 助手 (30260053)
陰山 聡  核融合科学研究所, 理論・シミュレーション研究センター, 助手 (20260052)
藤堂 泰  核融合科学研究所, 理論・シミュレーション研究センター, 助手 (00249971)
渡邉 國彦  核融合科学研究所, 計算機センター, 教授 (40220876)
堀内 利得  核融合科学研究所, 理論・シミュレーション研究センター, 助教授 (00229220)
洲鎌 英雄  核融合科学研究所, 大型ヘリカル研究部, 助教授 (80202125)
岡本 正雄  核融合科学研究所, 大型ヘリカル研究部, 教授 (70115541)
SHATS M.G.  オーストラリア国立大学, プラズマ研究所, 研究員
BORG G.G.  オーストラリア国立大学, プラズマ研究所, 研究員
HOWARD J.  オーストラリア国立大学, プラズマ研究所, 研究員
BLACKWELL B.  オーストラリア国立大学, プラズマ研究所, 上級研究員
武藤 敬  核融合科学研究所, 大型ヘリカル研究部, 助教授 (90115949)
DEWAR R.L.  オーストラリア国立大学, プラズマ研究所, 教授
GARDNER H.J.  オーストラリア国立大学, プラズマ研究所, 研究員
SHARP L.E.  オーストラリア国立大学, プラズマ研究所, 上級研究員
PERSSON M.  オーストラリア国立大学, プラズマ研究所, 研究員
佐藤 元泰  核融合科学研究所, 大型ヘリカル研究部, 助教授 (60115855)
Project Period (FY) 1996 – 1998
Project Status Completed (Fiscal Year 1998)
Budget Amount *help
¥7,400,000 (Direct Cost: ¥7,400,000)
Fiscal Year 1998: ¥2,500,000 (Direct Cost: ¥2,500,000)
Fiscal Year 1997: ¥2,400,000 (Direct Cost: ¥2,400,000)
Fiscal Year 1996: ¥2,500,000 (Direct Cost: ¥2,500,000)
Keywordstoroidal plasma / plasma confinement / heliac / helical plama / computer simulation / plasma heating / plasma diagnosis / complexity plasma / プラズマ3次元平衡 / プラズマ安定性
Research Abstract

Based on agreement on academic exchange between National Institute for Fusion Science (NIFS) and the Australian National University (ANU), which was concluded on May, 1995, this project has aimed at understanding physics mechanism of various plasma phenomena occurring in toroidal geometry like the helical system plasma. 1. Concerning plasma theory, magnetic island formation and self-healing in three dimensional finite pressure equilibria, linear stability and nonlinear time development of pressure driven instabilities, optimizationof magnetic field configuration for helical axis stellarator, plasma self-organization, and development of advanced visualization technology by using virtual reality system are studied successfully as collaborative researches. 2. As for plasma heat ingexperiment, a device for electron cyclotron resonance heating was developed as a collaborative research, and was applied for the H-1 helical device in ANU.In addition, possibility of plasma heating by using ion cyclotron resonance heating was analyzed and proved to be valid in the complex geometry of helical axis stellarator. 3. Comparative study of plasma confinement between CHS in NIFS and H-1 in ANU has been executed, and common properties concerning fluctuation-driven particle flux was revealed. The new knowledge suggests existence of improved confinement mechanism not only for stellarator, but also for tokamak plasnas. 4. Innovative methods for diagnosis of plasma density have been developed out of collaborative research, and were proved to be of practical level by applying the device in LHD plasma measurements.

Report

(4 results)
  • 1998 Annual Research Report   Final Research Report Summary
  • 1997 Annual Research Report
  • 1996 Annual Research Report
  • Research Products

    (44 results)

All Other

All Publications (44 results)

  • [Publications] T.Hayashi: "Self-organizing plasmas" Plasma Phys.Controlled Fusion. 41・3A. 229-238 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] K.Kawahata: "Far infrared laser interferometer system on LHD" Rev.Sci.Instruments. 70・1. 707-709 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] K.Tanaka: "Faraday rotation measarements on conpact helical system" Rev.Sci.Instruments. 70・1. 730-733 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] R.L.Dewar: "Discrete and Continuum ballooning modes in a stellarator" J.Plasma Fusion Res.Series. 1・1. 108-110 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] S.S.Lloyd: "Magnetic Islands Formation in a Low Shear Configuration" J.Plasma Fusion Res.Series. 1・1. 484-486 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] T.Hayashi: "Nonlinear simulation of Internal Reconnection Event in spherical tokamak" Nuclear Fusion. in print. (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] K.Ichiguchi, N.Nakajima, H.Gardner: "Free-boundary studies for the large helical device" Nuclear Fusion. 36. 1157 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] K.Ichiguchi, N.Nakajima, M.Okamoto: "Theoretical prediction of bootstrap current in the large helical device with unbalanced halical coil currents" Nuclear Fusion. 37. 1109 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] T.-H.Watanabe, T.Sato, and T.Hayashi: "Magnetohydrodynamic simulation on co- and counter-helicity merging of spheromaks and driven magnetic reconnection" Phys.Plasmas. 4. 1297-1307 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] R.L.Dewar: "Reduced Form of MHD Lagrangian for Ballooning Modes" J.Plasma Fusion Res. 73. 1123-1134 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] K.Ichiguchi: "Collisionality dependence of Mercier stability in LHD equilibria with bootstrap currents" Plasma Phys.Control.Fusion. 39. 1805 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] J.Harris and the H-1 Team: "Confinement transitions in the H-1 Heliac" J.Plasma Fusion Res.Series. 1. 37-40 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] R.L.Dewar, N.Nakajima, et al: "Discrete and Continuum ballooning modes in a stellarator" J.Plasma Fusion Res.Series. 1. 108-110 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] S.Murakami et al: "Suprathermal electron effects on ECRH deposition profile and ambipolar flux in W7AS" J.Plasma Fusion Res.Series. 1. 118 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] S.S.Lloyd, H.J.Gardner, T.Hayashi, and S.Hudson: "Magnetic Islands Formation in a Low Shear Configuration" J.Plasma Fusion Res. 484. (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] R.Kanno, N.Nakajima, T.Hayiashi, and M.Okamoto: "Net Current Effects on the HINT computation" J.Plasma Fusion Res. 1. 488 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] S.V.Bazdenkov, T.Sato, K.Watanabe, R.Horiuchi, T.Hayashi, Y.Toda, A.Kageyama, T.-H.Watanabe, and H.Takamaru: "Topological Transformations in Isolated Straight Magnetic Flux Tube" Astrophys.J. (in press). (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] T.-H.Watanabe, N.Nakajima, T.Hayashi, and T.Sato: "Magnetohydrodynamic instabilities in a compact torus formed by the spheromak merging" Phys.Plasmas. (in press). (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] K.Tanaka, K.Kawahata, A.Ejiri, J.Howard, S.Okajima: "Faraday rotation measurments on compact helical system by using a phase sensitive heterodyne polarimeter" Rev.Sci.Instruments. 70. 730 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] K.Kawahata, K.Tanaka, Y.Ito, A.Ejiri, R.J.Wylde: "A two color millimeter-wave interferometer for the measurement of line integral electron density on large helical device" Rev.Sci.Instruments. 70. 695 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] K.Kawahata, K.Tanaka, Y.Ito, A.Ejiri, S.Okajima: "Far infrared laser interferometer system on the Large Helical Device" Rev.Sci.Instruments. 70. 707 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] J.Howard: "Modulated optical solid-sltate spectrometer applications in plasma diagnostics" Rev.Sci.Instruments. 70. 368 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] T.Hayashi: "Self-organizng plasmas" Plasma Phys.Controlled Fusion. (in print). (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] T.Hayashi: "Computer simulations on relaxation phenomena in spherical tokamak" Chinese Academy of Physics. (in print). (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] T.hayashi: "Nonlinear simulations of Internal Reconnection Event in spherical tokamak" Nuclear Fusion. (in print). (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] T.Hayashi: "Relaxation phenomena in spherical tokamak" J.Plasma Fusion Res.(in print). (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] T.Hayashi: "Self-organizing plasmas" Plasma Phys.Controlled Fusion. 41・3A. 229-238 (1999)

    • Related Report
      1998 Annual Research Report
  • [Publications] K.Kawahata: "Fun infrared laser interferometer system on LHD" Rev.Sci.Instruments. 70・1. 707-709 (1999)

    • Related Report
      1998 Annual Research Report
  • [Publications] K.Tanaka: "Faraday rotation measarements on conpact helical system" Rev.Sci.Instruments. 70・1. 730-733 (1999)

    • Related Report
      1998 Annual Research Report
  • [Publications] R.L.Dewar: "Discrete and Continuum ballooning makes in a stellarator" J.Plasma Fusion Res.Series. 1・1. 108-110 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] S.S.Lloyd: "Magnetic Islands Formation in a Low Shear Configuration" J.Plasma Fusion Res.Series. 1・1. 484-486 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] T.Hayashi: "Nanlinear simulation of Internal Reconnection Event in spherical tokanck" Nuclear Fusion. (in press). (1999)

    • Related Report
      1998 Annual Research Report
  • [Publications] R.L.Dewar: "Reduced Form of MHD Lagrangian for Ballooning Modes" Journal of Plasma and Fusion Research. Vol.73,no.10. 1123-1134 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] T.H.Watanabe: "Magnetohydrodynamic simulation onco-and counter-helicity merging of spheromaks and deriven magnetic reconnection" Phys.Plasmas. Vol.4,no.5. 1297-1307 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] A.kageyama: "Generation mechanism of a dipole field by a magnetohydrodynamic dynamo" Phys.Rev.E. Vol.55,no.12. 4617-4626 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] S.Fujiwara: "Molecular dynamics simulation of structural formation of short polymer chains" Phys.Rev.Lett.Vol.80,no.4. 991-994 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] Y.Todo: "Linear and Nonlinear Particle-Magnetohydrodynamic Simulations of the Toroidal Alfven Eigenmode" Phys.Plasmas. (in press). (1998)

    • Related Report
      1997 Annual Research Report
  • [Publications] K.Watanabe: "Computer Simulation Studies of Dust Charging and Coagulation Processes inDusty Plasmas" Plasma Phys.Control.Fusion. (in press). (1998)

    • Related Report
      1997 Annual Research Report
  • [Publications] T.Hayashi: "Behavior of Magnetic Islands in 3D MHD Equilibria of Helical Devices" Plasma Physics and Controlled Nuclear Fusion Research. 3・1. 309-312 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] N.Nakajima: "High-mode-number ballooning modes in a beliotron/torsatron system : 1.Local magnetic shear" Physics of Plasmas. 3・12. 4311-4316 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] N.Nakajima: "High-mode-number ballooning modes in a heliotron/torsatron system : 2.Stability" Physics of Plasmas. 3・12. 4317-4325 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] K.Ichiguchi: "Free-Boundary Studies for the Large Helical Device" Nuclear Fusion. 36・4. 1157-1166 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] M.G.Shats: "Transitions to Improved confinement mode in the H-1 heliac" Physical Review Letter. 77・12. 4190-4196 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] K.Ichiguchi: "Flexibility of LHD Configuration with Multilayer Helical Coils" Nuclear Fusion. 36・4. 1145-1155 (1996)

    • Related Report
      1996 Annual Research Report

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Published: 1996-04-01   Modified: 2016-04-21  

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