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Compatibility between stable divertor detachment and core plasma performance with 3D edge magnetic field structure change

Research Project

Project/Area Number 19H01878
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 14020:Nuclear fusion-related
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, 准教授 (30399307)

Project Period (FY) 2019-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥17,680,000 (Direct Cost: ¥13,600,000、Indirect Cost: ¥4,080,000)
Fiscal Year 2022: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Fiscal Year 2021: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2020: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Fiscal Year 2019: ¥10,790,000 (Direct Cost: ¥8,300,000、Indirect Cost: ¥2,490,000)
Keywords3次元磁場効果 / 熱的不安定性 / プラズマ放射冷却 / 乱流伝播 / 輸送障壁 / 3次元磁場構造 / 3次元磁場トポロジー / ダイバータ / デタッチメント / コアプラズマ / ヘリカル型装置 / トカマク型装置 / ダイバータ熱負荷 / 放射冷却 / コアプラズマ性能
Outline of Research at the Start

核融合炉におけるダイバータ熱負荷軽減とコアプラズマの閉じ込め性能の両立は極めて重要な研究課題である。一方、さらなるダイバータ熱負荷軽減を目指して提案されている摂動磁場(RMP)を用いた先進的ダイバータ配位においては、この点に着目した研究がまだほとんどなされていない。申請者らはこれまで、RMPを印加することによりデタッチメント運転が安定に維持できることを示してきた。その中で、RMPの印加によってコアの閉じ込め特性が変化することを見出した。これらの新たな発見を足掛かりにして、核融合炉における周辺部の3次元磁場形状がデタッチメント時のコアプラズマ閉じ込め性能に及ぼす影響について明らかにする。

Outline of Final Research Achievements

In a toroidal plasma confinement system for a fusion reactor, it has been found that a magnetic field structure called a "magnetic island" at the periphery enhances radiative cooling with the multi-charged ions in the plasma and reduces the heat load on the device wall, and that a transport barrier is formed at the boundary between the magnetic island and the confinement region, which improves the performance of plasma confinement. This phenomenon is more pronounced in deuterium plasmas than in hydrogen plasmas. In addition, significant progress has been made in the physical understanding of the impact of magnetic islands on the formation of radiating edge plasmas in terms of thermal instability. Furthermore, it was newly discovered that the turbulence excited at the transport barrier spreads and contributes to the reduction of the heat load on the device wall.

Academic Significance and Societal Importance of the Research Achievements

核融合発電を目指した環状プラズマ閉じ込め装置において、装置壁への過大な熱負荷の軽減と、閉じ込めプラズマ性能の両立は最重要課題の一つである。本研究の成果により、周辺磁場構造を最適化することによって、装置壁への熱負荷を軽減しつつ、高閉じ込め性能を維持できる可能性が見出された。さらに、乱流伝播による装置壁熱負荷軽減の発見は、従来の多荷イオンからの放射に替わる新たな熱負荷軽減手法として期待できる。
熱的不安定性の成長における磁場構造・トポロジーの役割に関する理解が進展した。本成果は、同様な不安定性を有する他の物理学分野(星間プラズマなど)の進展にも大きく寄与する。

Report

(5 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Annual Research Report
  • 2020 Annual Research Report
  • 2019 Annual Research Report
  • Research Products

    (67 results)

All 2022 2021 2020 2019 Other

All Int'l Joint Research (10 results) Journal Article (22 results) (of which Int'l Joint Research: 7 results,  Peer Reviewed: 22 results,  Open Access: 12 results) Presentation (34 results) (of which Int'l Joint Research: 29 results,  Invited: 13 results) Book (1 results)

  • [Int'l Joint Research] 西南交通大学(中国)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] デュッセルドルフ大学/マックスプランク研究所(ドイツ)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] ウィスコンシン大学(米国)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] デュッセルドルフ大学/マックスプランク研究所(ドイツ)

    • Related Report
      2021 Annual Research Report
  • [Int'l Joint Research] カルロス三世大学(スペイン)

    • Related Report
      2021 Annual Research Report
  • [Int'l Joint Research] ウィスコンシン大学(米国)

    • Related Report
      2021 Annual Research Report
  • [Int'l Joint Research] デュッセルドルフ大学(ドイツ)

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research] ウィスコンシン大学(米国)

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research] マックスプランク研究所(ドイツ)

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research] ユーリッヒ研究所(ドイツ)

    • Related Report
      2019 Annual Research Report
  • [Journal Article] Spatial Profiles of NeVI-NeX Emission in ECR-Heated Discharges of the Large Helical Device with Divertor Detachment Induced by RMP Application and Ne Impurity Seeding2022

    • Author(s)
      OISHI Tetsutarou、KOBAYASHI Masahiro、TAKAHASHI Hiromi、HAYASHI Yuki、MUKAI Kiyofumi、MORITA Shigeru、GOTO Motoshi、KAWAMOTO Yasuko、KAWATE Tomoko、MASUZAKI Suguru、SUZUKI Chihiro、KAWAMURA Gakushi、MOTOJIMA Gen、SEKI Ryosuke
    • Journal Title

      Plasma and Fusion Research

      Volume: 17 Issue: 0 Pages: 2402022-2402022

    • DOI

      10.1585/pfr.17.2402022

    • ISSN
      1880-6821
    • Year and Date
      2022-04-22
    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] An approach to implement a heat flux limit in a model for fusion relevant plasmas2022

    • Author(s)
      M. Z. Tokar M. Kobayashi N. Ohno
    • Journal Title

      Physics of Plasmas

      Volume: 29 Issue: 3 Pages: 032502-032502

    • DOI

      10.1063/5.0079524

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Isotope effect of rovibrational distribution of hydrogen molecules desorbed from amorphous carbon2022

    • Author(s)
      H. Nakamura, S. Saito, T. Sawada, K. Sawada, G. Kawamura, M. Kobayashi, and M. Hasuo
    • Journal Title

      Journal of Applied Physics

      Volume: 61 Issue: SA Pages: SA1005-SA1005

    • DOI

      10.35848/1347-4065/ac2435

    • NAID

      120007191897

    • Related Report
      2022 Annual Research Report 2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Three-dimensional structure of radiative cooling in impurity seeded plasmas in the Large Helical Device2022

    • Author(s)
      Mukai K.、Kawamura G.、Masuzaki S.、Hayashi Y.、Tanaka H.、Peterson B.J.、Oishi T.、Suzuki C.、Kobayashi M.、Munechika K.
    • Journal Title

      Nuclear Materials and Energy

      Volume: 33 Pages: 101294-101294

    • DOI

      10.1016/j.nme.2022.101294

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Self-Sustained Divertor Oscillation Driven by Magnetic Island Dynamics in Torus Plasma2022

    • Author(s)
      Kobayashi T.、Kobayashi M.、Narushima Y.、Suzuki Y.、Watanabe K. Y.、Mukai K.、Hayashi Y.
    • Journal Title

      Physical Review Letters

      Volume: 128 Issue: 8

    • DOI

      10.1103/physrevlett.128.085001

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Turbulence Spreading into an Edge Stochastic Magnetic Layer Induced by Magnetic Fluctuation and Its Impact on Divertor Heat Load2022

    • Author(s)
      Kobayashi M.、Tanaka K.、Ida K.、Hayashi Y.、Takemura Y.、Kinoshita T.
    • Journal Title

      Physical Review Letters

      Volume: 128 Issue: 12

    • DOI

      10.1103/physrevlett.128.125001

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Confinement improvement during detached phase with RMP application in deuterium plasmas of LHD2022

    • Author(s)
      M. Kobayashi, R. Seki, Y. Hayashi, T. Oishi, K. Tanaka, Y. Takemura, K. Ida, T. Kinoshita, K. Mukai, S. Morita, S. Masuzaki
    • Journal Title

      Nuclear Fusion

      Volume: 62 Issue: 5 Pages: 056006-056006

    • DOI

      10.1088/1741-4326/ac42f3

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Gas puff imaging system for edge plasma fluctuation measurements in large helical device2022

    • Author(s)
      M. Kobayashi, S. Ohdachi, Y. Xu, W. Li, A. Shimizu, J. Cheng
    • Journal Title

      Review of Scientific Instruments

      Volume: 93 Issue: 9

    • DOI

      10.1063/5.0100301

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Confirmation of the Absence of Contact between Edge Boundary Plasma and Inboard First Wall in LHD Discharges Based on Radial Profile Measurement of Hβ Line Emissions2022

    • Author(s)
      Yasuko Kawamoto, Shigeru Morita, Gakushi Kawamura, Motoshi Goto, Tetsutarou Oishi, Tomoko Kawate, Masahiro Kobayashi, Mamoru Shoji
    • Journal Title

      Fusion Science and Technology

      Volume: 78 Issue: 7 Pages: 537-548

    • DOI

      10.1080/15361055.2022.2068897

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Recent results from deuterium experiments on the large helical device and their contribution to fusion reactor development2022

    • Author(s)
      Masaki Osakabe, Hiromi Takahashi, Hiroshi Yamada, Kenji Tanaka, Tatsuya Kobayashi, Katsumi Ida, Satoshi Ohdachi, Jacobo Varela, Kunihiro Ogawa, Masahiro Kobayashi, Katsuyoshi Tsumori, Katsunori Ikeda, Suguru Masuzaki, et al
    • Journal Title

      Nuclear Fusion

      Volume: 62 Issue: 4 Pages: 042019-042019

    • DOI

      10.1088/1741-4326/ac3cda

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] A Mesh-Generation Scheme for the Large Helical Device Based on the Structure of Magnetic-Field Lines2021

    • Author(s)
      D. Takada, T. Itoh, M. Kobayashi, and H. Nakamura
    • Journal Title

      Plasma and Fusion Research

      Volume: 16 Issue: 0 Pages: 2401086-2401086

    • DOI

      10.1585/pfr.16.2401086

    • NAID

      130008064607

    • ISSN
      1880-6821
    • Year and Date
      2021-07-05
    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] EUV and VUV Spectra of NeIII-NeX Line Emissions Observed in the Impurity Gas-Puffing Experiments of the Large Helical Device2021

    • Author(s)
      OISHI Tetsutarou、MORITA Shigeru、KOBAYASHI Masahiro、MUKAI Kiyofumi、KAWAMURA Gakushi、MASUZAKI Suguru、HAYASHI Yuki、SUZUKI Chihiro、KAWAMOTO Yasuko、GOTO Motoshi、the LHD Experiment Group
    • Journal Title

      Plasma and Fusion Research

      Volume: 16 Issue: 0 Pages: 2402006-2402006

    • DOI

      10.1585/pfr.16.2402006

    • NAID

      130007994299

    • ISSN
      1880-6821
    • Year and Date
      2021-02-10
    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Steady-state sustainment of divertor detachment with multi-species impurity seeding in LHD2021

    • Author(s)
      Mukai Kiyofumi、Masuzaki Suguru、Hayashi Yuki、Oishi Tetsutaro、Suzuki Chihiro、Kobayashi Masahiro、Tokuzawa Tokihiko、Tanaka Hirohiko、Tanaka Kenji、Kinoshita Toshiki、Sakai Hikona、Peterson Byron Jay
    • Journal Title

      Nuclear Fusion

      Volume: 61 Issue: 12 Pages: 126018-126018

    • DOI

      10.1088/1741-4326/ac2bbc

    • NAID

      120007167590

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Ro-vibrational population distribution in the ground state of hydrogen isotopologues in LHD peripheral plasmas deduced from emission spectroscopy2021

    • Author(s)
      Hiroki Ishihara , Arseniy Kuzmin, Masahiro Kobayashi, Taiichi Shikama, Keiji Sawada , Seiki Saito , Hiroaki Nakamura, Keisuke Fujii , Masahiro Hasuo, the LHD Experiment Group
    • Journal Title

      Journal of Quantitative Spectroscopy & Radiative Transfer

      Volume: 267 Pages: 107592-107592

    • DOI

      10.1016/j.jqsrt.2021.107592

    • NAID

      120007184719

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Divertor heat load distribution measurements with infrared thermography in the LHD helical divertor2021

    • Author(s)
      Yuki Hayashi, Masahiro Kobayashi, Kiyofumi Mukai, Suguru Masuzaki, Takanori Murase, and the LHD Experiment Group
    • Journal Title

      Fusion Engineering and Design

      Volume: 165 Pages: 112235-112235

    • DOI

      10.1016/j.fusengdes.2021.112235

    • NAID

      120007098360

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Divertor Detachment with Multi-Species Impurity Seeding in LHD2020

    • Author(s)
      K. Mukai, S. Masuzaki, Y. Hayashi, T. Oishi, C. Suzuki, M. Kobayashi, H. Tanaka, B.J. Peterson
    • Journal Title

      Plasma and Fusion Research

      Volume: 15 Issue: 0 Pages: 1402051-1402051

    • DOI

      10.1585/pfr.15.1402051

    • NAID

      130007882174

    • ISSN
      1880-6821
    • Year and Date
      2020-07-15
    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Time-dependent plasma transport simulation for the study of edge impurity radiation dynamics with magnetic island in large helical device2020

    • Author(s)
      M. Kobayashi, M.Z. Tokar
    • Journal Title

      Contributions to Plasma Physics

      Volume: 60 Issue: 5-6

    • DOI

      10.1002/ctpp.201900138

    • NAID

      120007176987

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Molecular Dynamics Simulation Model of Hydrogen Recycling on Carbon Divertor for Neutral Transport Analysis in LHD2020

    • Author(s)
      S. Saito, H. Nakamura, K. Sawada, G. Kawamura, M. Kobayashi, M. Hasuo
    • Journal Title

      Contrib. Plasm. Phys.

      Volume: - Issue: 5-6

    • DOI

      10.1002/ctpp.201900152

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Neutral transport code for rovibrational population calculation of molecular hydrogen in large helical device plasmas2020

    • Author(s)
      Keiji Sawada, Hiroaki Nakamura, Seiki Saito, Gakushi Kawamura, Masahiro Kobayashi, Kenta Haga, Ryusei Migita, Takumi Sawada, Masahiro Hasuo
    • Journal Title

      Contrib. Plasm. Phys.

      Volume: - Issue: 5-6

    • DOI

      10.1002/ctpp.201900153

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Modeling of the resonant magnetic perturbation effect on detachment in the Large Helical Device2020

    • Author(s)
      M.Z. Tokar, M. Kobayashi
    • Journal Title

      Plasma Physics and Controlled Fusion

      Volume: 62 Issue: 8 Pages: 085011-085011

    • DOI

      10.1088/1361-6587/ab9c49

    • NAID

      120007184717

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] A mechanism of ion temperature peaking by impurity pellet injection in a heliotron plasma2020

    • Author(s)
      M.Z. Tokar, M. Osakabe, M. Kobayashi, K. Mukai, K. Nagaoka, H. Takahashi, K. Tanaka, T. Morisaki
    • Journal Title

      Plasma Physics and Controlled Fusion

      Volume: 62 Issue: 7 Pages: 075008-075008

    • DOI

      10.1088/1361-6587/ab8ca2

    • NAID

      120007184714

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Impact of a resonant magnetic perturbation field on impurity radiation, divertor footprint, and core plasma transport in attached and detached plasmas in the Large Helical Device2019

    • Author(s)
      Kobayashi M.、Seki R.、Masuzaki S.、Morita S.、Zhang H.M.、Narushima Y.、Tanaka H.、Tanaka K.、Tokuzawa T.、Yokoyama M.、Ido T.、Yamada I.、the LHD Experimental Group
    • Journal Title

      Nuclear Fusion

      Volume: 59 Issue: 9 Pages: 096009-096009

    • DOI

      10.1088/1741-4326/ab26e6

    • NAID

      120007116720

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Presentation] Gas puff imaging system for edge plasma fluctuation measurements in Large Helical Device2022

    • Author(s)
      M. Kobayashi, S. Ohdachi, Y. Xu, W. Li, J. Cheng, A. Shimizu
    • Organizer
      High-temperature plasma diagnostics conference 2022
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] High radiation fraction detachment with Ne seeding and edge magnetic island in new magnetic configuration in LHD2022

    • Author(s)
      M. Kobayashi, T. Oishi, Y. Hayashi, K. Mukai, H. Takahashi, K. Tanaka, T. Kinoshita, M.Z. Tokar, B.J. Peterson, S. Masuzaki
    • Organizer
      25th International Conference on Plasma Surface Interaction in Controlled Fusion Devices
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] He exhaust property in helical divertor at LHD2022

    • Author(s)
      S Sereda, M Kobayashi, H Funaba, M. Yoshinuma, K Ida, O Schmitz
    • Organizer
      International stellarator/heliotron workshop 2022
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Detachment control with feedback impurity seeding and ECRH injection in LHD2022

    • Author(s)
      M. Kobayashi, Y. Mizuno, K. Nagahara, T. Tsujimura, K. Mukai, Y. Yoshimura, Y. Hayashi, T. Oishi, C. Suzuki, N. Kenmochi, S. Masuzaki, B.J. Peterson
    • Organizer
      48th EPS Conference on Plasma Physics
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Edge MHD and Turbulent Transport and their Impact on Pedestal, SOL and Divertor Heat Flux2022

    • Author(s)
      Masahiro Kobayashi
    • Organizer
      H-mode workshop
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Turbulence spreading into edge stochastic magnetic layer induced by MHD activity in toroidal confinement plasma2022

    • Author(s)
      M. Kobayashi, K. Ida, K. Tanaka, Y. Hayashi, Y. Takemura, T. Kinoshita, T. Tokuzawa
    • Organizer
      6th Asia-Pacific Conference on Plasma Physics
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] High radiation fraction detachment with Ne seeding and an edge magnetic island in a new magnetic configuration in LHD2022

    • Author(s)
      M. Kobayashi, T. Oishi, Y. Hayashi, K. Mukai, H. Takahashi, K. Tanaka, T. Kinoshita, M.Z. Tokar, B.J. Peterson, S. Masuzaki, H. Nakamura
    • Organizer
      第39回プラズマ・核融合学会年会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Characteristics of heat flux mitigation in radiative divertor with multi magnetic footprint in the Large Helical Device2022

    • Author(s)
      Y Hayashi, M Kobayashi, K Mukai, S Masuzaki, T Murase, and the LHD Experiment Group
    • Organizer
      25th International Conference on Plasma Surface Interaction in Controlled Fusion Devices
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Three-dimensional structure of radiative cooling in impurity seeded plasmas in the Large Helical Device2022

    • Author(s)
      K. Mukai, G. Kawamura, S. Masuzaki, Y. Hayashi, H. Tanaka, B.J. Peterson, T. Oishi, C. Suzuki, M. Kobayashi, K. Munechika
    • Organizer
      25th International Conference on Plasma Surface Interaction in Controlled Fusion Devices
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] He exhaust property in helical divertor at LHD2022

    • Author(s)
      S. Sereda, M. Kobayashi, H. Funaba, M. Yoshinuma, K. Ida, O. Schmitz and the LHD team
    • Organizer
      International Stellarator/Heliotron workshop 2022
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] RMP induced H-mode transition during divertor detachment with enhanced edge radiation in deuterium plasmas in LHD2021

    • Author(s)
      M. Kobayashi, R. Seki, Y. Takemura, Y. Hayashi, T. Oishi, K. Tanaka, K. Mukai, S. Morita, K. Ida, S. Masuzaki
    • Organizer
      28th IAEA Fusion Energy Conference
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Compatibility of core plasma performance and radiating edge plasma with 3D edge magnetic field structure change induced by RMP application in LHD2021

    • Author(s)
      M. Kobayashi, K. Tanaka, K. Ida, R. Seki, T. Oishi, Y. Hayashi, Y. Takemura, M.Z. Tokar, S. Morita, M. Osakabe, K. Mukai, S. Masuzaki, Y. Narushima
    • Organizer
      47th European Conference on Plasma Physics
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Interaction between turbulence spreading and MHD activity at edge stochastic magnetic layer in LHD2021

    • Author(s)
      M. Kobayashi, K. Tanaka, K. Ida, Y. Hayashi, Y. Takemura, T. Kinoshita, T. Tokuzawa
    • Organizer
      the Joint APTWG-TTF meeting
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Divertor detachment and core plasma transport with RMP application in LHD2021

    • Author(s)
      M. Kobayashi, K. Tanaka, K. Ida, R. Seki, T. Oishi, Y. Hayashi, Y. Takemura, M.Z. Tokar, S. Morita, M. Osakabe, K. Mukai, S. Masuzaki, Y. Narushima
    • Organizer
      5th Asia-Pacific Conference on Plasma Physics
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Observation of turbulence spreading into edge stochastic magnetic layer caused by MHD mode excitation in LHD2021

    • Author(s)
      M. Kobayashi, K. Tanaka, K. Ida, Y. Hayashi, Y. Takemura, T. Kinoshita, T. Tokuzawa
    • Organizer
      the 63rd Annual Meeting of the APS Division of Plasma Physics
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Plasma transport in magnetic island and stochastic magnetic field in non-axisymmetric toroidal confinement system2021

    • Author(s)
      Masahiro Kobayashi
    • Organizer
      The 30th International Toki Conference on Plasma and Fusion Research
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Impact of 3D edge magnetic field structure/topology on thermal instability and core plasma confinement in toroidal magnetic confinement system2021

    • Author(s)
      M. Kobayashi, R. Seki, Y. Hayashi, T. Oishi, K. Tanaka, Y. Takemura, M.Z. Tokar, K. Ida, T. Kinoshita, K. Mukai, S. Morita, S. Masuzaki
    • Organizer
      第38回プラズマ・核融合学会年会
    • Related Report
      2021 Annual Research Report
  • [Presentation] STEADY-STATE SUSTAINMENT OF DIVERTOR DETACHMENT WITH MULTI-SPECIES IMPURITY SEEDING IN LHD2021

    • Author(s)
      K. Mukai, S. Masuzaki, Y. Hayashi, T. Oishi, T. Oishi, M. Kobayashi, T. Tokuzawa, H. Tanaka, B. J. Peterson
    • Organizer
      28th IAEA Fusion Energy Conference
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] DEVELOPMENT OF SIMULATION CODES TO TREAT HYDROGEN MOLECULES PROCESS IN DIVERTOR PLASMA REGION INCLUDING DIVERTOR PLATE2021

    • Author(s)
      H. NAKAMURA, H. NAKAMURA, K. SAWADA, R. MIGITA, G. KAWAMURA, M. KOBAYSHI, H. ISHIHARA, K. ARSENIY, M. HASUO
    • Organizer
      28th IAEA Fusion Energy Conference
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Divertor operation scenarios in helical devices2021

    • Author(s)
      R. Koenig, S. Masuzaki, M. Kobayashi, K. Mukai, G. Motojima, T. Oishi, Y. Hayashi, G. Kawamura, T. Morisaki, S. Brezinsek, F. Effenberg, Y. Feng, M. Jakubowski, T. Kremeyer, M. Krychowiak, V. Perseo, F. Reimold, M. Otte, O. Schmitz, T Sunn Pedersen, T. Wauters, U. Wenzel, V. Winters and the W7-X and LHD teams
    • Organizer
      International Conference on Plasma Surface Interaction
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Ne & N seeding experiments in LHD and W7-X2020

    • Author(s)
      M. Kobayashi, M. Jakubowski, the LHD experiment group, W7-X team
    • Organizer
      28th ITPA meeting of TG SOL and divertor physics
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Mechanisms for Reduction of Ion Anomalous Transport in LHD, by Impurity Injection2020

    • Author(s)
      M.Z. Tokar, M. Osakabe, M. Kobayashi, K. Mukai, K. Nagaoka, H. Takahashi, K. Tanaka, T. Morisaki
    • Organizer
      International Toki Conference 29
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Ro-vibrational Population Distribution in the Ground State of Hydrogen Molecule Isotope in LHD Peripheral Plasmas Deduced from Emission Spectroscopy2020

    • Author(s)
      Arseniy KUZMIN, Hiroki ISHIHARA, Masahiro KOBAYASHI1, Taiichi SHIKAMA, Keiji SAWADA, Seiki,SAITO, Hiroaki NAKAMURA, Keisuke FUJII, Masahiro HASUO, and the LHD Experiment Group
    • Organizer
      International Toki Conference 29
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Study on Mesh Generation Scheme Based on Structure of Magnetic Field Lines for Large Helical Device2020

    • Author(s)
      Daisuke TAKADA, Taku ITOH, Masahiro KOBAYASHI, Hiroaki NAKAMURA
    • Organizer
      International Toki Conference 29
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] EUV and VUV Spectra of NeIII-NeX Line Emissions Observed in the Impurity Gas-puffing Experiments of the Large Helical Device2020

    • Author(s)
      Tetsutarou OISHI, Shigeru MORITA, Masahiro KOBAYASHI, Kiyofumi MUKAI, Gakushi KAWAMURA, Suguru MASUZAKI, Yuki HAYASHI, Chihiro SUZUKI, Yasuko KAWAMOTO, Motoshi GOTO and the LHD Experiment Group
    • Organizer
      International Toki Conference 29
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Isotope effects on particle transport in LHD2020

    • Author(s)
      T. Kinoshita, K. Tanaka, Y. Ohtani, M. Shoji, M. Goto, M. Kobayashi and LHD Experiment Group
    • Organizer
      International Toki Conference 29
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 共鳴摂動磁場を用いたダイバータ熱負荷軽減とコアプラズマ性能の両立2020

    • Author(s)
      小林政弘、田中謙治、高橋裕己、林 祐貴、向井清史、大石鉄太郎、武村勇輝、木下稔基、M.Z. Tokar, 關 良輔、増崎貴、ピーターソンバイロン、森田繁、LHD実験グループ
    • Organizer
      プラズマ・核融合学会年会
    • Related Report
      2020 Annual Research Report
  • [Presentation] FUEL SPECIES EFFECTS ON IMPURITY RADIATION AND ENERGY CONFINEMENT TIME IN DETACHMENT DISCHARGES WITH RMP APPLICATION IN LHD2019

    • Author(s)
      M. Kobayashi, S. Morita, T. Oishi, Y. Takemura, Y. Hayashi, I. Yamada, S. Masuzaki, Y. Narushima, K. Mukai, R. Seki, T. Tokuzawa, K. Tanaka, and the LHD experimental group
    • Organizer
      22nd International Stellarator and Heliotron workshop
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Advantage and disadvantage of LHD heliotron divertor2019

    • Author(s)
      M. Kobayashi, T. Goto, Y. Hayashi, G. Kawamura, G. Motojima, S. Morita, K. Mukai, S. Masuzaki, T. Oishi, C. Suzuki, T. Morisaki, and the LHD experimental group
    • Organizer
      Third Technical Meeting on Divertor Concepts
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Influence of a magnetic island on the edge impurity radiation in a heliotron2019

    • Author(s)
      M. Kobayashi , M.Z. Tokar
    • Organizer
      17th International Workshop on Plasma Edge Theory in Fusion Devices
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Macroscopic and microscopic instabilities in detached plasma of LHD2019

    • Author(s)
      T. Kinoshita, K. Tanaka, M. Kobayashi, Y. Takemura, LHD experiment group
    • Organizer
      28th International Toki conference
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Radiative divertor experiments with Ne, N, and Kr seeding in LHD2019

    • Author(s)
      Kiyofumi Mukai, Suguru Masuzaki, Yuki Hayashi, Chihiro Suzuki, Tetsutaro Oishi, Masahiro Kobayashi, Hirohiko Tanaka, Byron J. Peterson, and the LHD Experiment Group
    • Organizer
      Third Technical Meeting on Divertor Concepts
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] LHDにおける不純物ガス入射によるダイバータ熱負荷軽減2019

    • Author(s)
      向井清史、増崎貴1、林祐貴、小林政弘、鈴木千尋、大石鉄太郎、田中宏彦、 Byron Peterson、LHD実験グループ
    • Organizer
      プラズマ・核融合学会年会
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] 大型ヘリカル装置(LHD)における 赤外線計測2019

    • Author(s)
      林祐貴, 向井清史, 小林政弘, B.J. Peterson, LHD実験グループ
    • Organizer
      日本赤外線学会 第28回研究発表会
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Book] Fusion Energy: Experimental Studies of and Theoretical Models for Detachment in Helical Fusion Devices2019

    • Author(s)
      Masahiro Kobayashi and Mikhail Tokar
    • Total Pages
      126
    • Publisher
      IntechOpen
    • ISBN
      9781789854145
    • Related Report
      2019 Annual Research Report

URL: 

Published: 2019-04-18   Modified: 2024-01-30  

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