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Effects of electron cyclotron wave propagation with orbital angular momentum on plasma heating

Research Project

Project/Area Number 19K14687
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 14020:Nuclear fusion-related
Research InstitutionChubu University (2022)
National Institute for Fusion Science (2019-2021)

Principal Investigator

Tsujimura Toru  中部大学, 工学部, 准教授 (00732744)

Project Period (FY) 2019-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2021: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2020: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2019: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Keywords電子サイクロトロン波 / 磁化プラズマ / 光渦 / 軌道角運動量 / プラズマ加熱 / Berry曲率 / スパイラル位相ミラー / ミリ波伝送系 / ミリ波 / 伝送系 / ヘリカル波面 / ラゲール・ガウシアンビーム / 光のHall効果 / 偏波
Outline of Research at the Start

電子サイクロトロン (EC) 波によるプラズマ加熱の高効率化と加熱位置制御は核融合炉実現に向けた必須課題である。本研究の学術的問いはEC加熱において従来無視してきた光の軌道角運動量が異方性媒質である磁化プラズマ中の伝搬にどのように作用するか、である。そこで本研究では光のスピン・軌道角運動量の相互作用によるEC波の伝搬軌道のズレを数値計算と実験で検証する。またこの新しい効果を考慮したEC入射による高効率加熱および高精度な加熱位置制御を実証する。

Outline of Final Research Achievements

The purpose of this study was to elucidate how the orbital angular momentum of electromagnetic wave affects its propagation in an anisotropic medium, magnetized plasma, in electron cyclotron (EC) heating. The results obtained are as follows: (1) The Berry curvature increases divergently when the wavenumber goes to zero, so that in the case of the X-mode, the effect of transverse shift appears when the wave is reflected at the right-handed cutoff layer. (2) The effect of the spiral wavefront on the wavefield was found to be more pronounced when the vorticity of the EC waves on the spiral wavefront was larger and closer to the optical axis. (3) A spiral phase mirror was developed to generate EC waves with orbital angular momentum. (4) We constructed an optical vortex transmission system and demonstrated plasma generation, heating, and sustainment by vortex EC waves for the first time in the world.

Academic Significance and Societal Importance of the Research Achievements

学術的意義は、従来無視されてきた光の軌道角運動量がEC波の偏波と相互作用することで、異方的な誘電媒質である磁化プラズマ中の伝搬に与える影響が明らかにされてきたということである。
社会的意義は、高密度領域に伝搬可能と示唆される渦EC波によるプラズマ加熱の高効率化を理論的・実験的に検証していくことが核融合炉実現へ向けて貢献することである。

Report

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

    (22 results)

All 2022 2021 2020 2019

All Journal Article (6 results) (of which Peer Reviewed: 6 results,  Open Access: 3 results) Presentation (16 results) (of which Int'l Joint Research: 11 results,  Invited: 5 results)

  • [Journal Article] Development of off-axis spiral phase mirrors for generating optical vortices in a range of millimeter waves2022

    • Author(s)
      Tsujimura Toru Ii、Goto Yuki、Okada Koji、Kobayashi Sakuji、Kubo Shin
    • Journal Title

      Review of Scientific Instruments

      Volume: 93 Issue: 4 Pages: 043507-043507

    • DOI

      10.1063/5.0077893

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Direct observation of the non-locality of non-diffusive counter-gradient electron thermal transport during the formation of hollow electron-temperature profiles in the Large Helical Device2022

    • Author(s)
      Tsujimura T. I.、Kobayashi T.、Tanaka K.、Ida K.、Nagaoka K.、Yoshinuma M.、Yamada I.、Funaba H.、Seki R.、Satake S.、Kinoshita T.、Tokuzawa T.、Kenmochi N.、Igami H.、Mukai K.、Goto M.、Kawamoto Y.
    • Journal Title

      Physics of Plasmas

      Volume: 29 Issue: 3 Pages: 032504-032504

    • DOI

      10.1063/5.0074351

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Trajectory Shift in Propagation of Electron Cyclotron Waves Due to Berry Curvature in Magnetized Plasma2021

    • Author(s)
      TSUJIMURA Toru I.、YANAGIHARA Kota、GOTO Yuki、KUBO Shin
    • Journal Title

      Plasma and Fusion Research

      Volume: 16 Issue: 0 Pages: 2401009-2401009

    • DOI

      10.1585/pfr.16.2401009

    • NAID

      130007994290

    • ISSN
      1880-6821
    • Year and Date
      2021-02-10
    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Propagation properties of electron cyclotron waves with helical wavefronts in magnetized plasma2021

    • Author(s)
      Tsujimura Toru Ii、Kubo Shin
    • Journal Title

      Physics of Plasmas

      Volume: 28 Issue: 1 Pages: 012502-012502

    • DOI

      10.1063/5.0015109

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Improved performance of electron cyclotron resonance heating by perpendicular injection in the Large Helical Device2020

    • Author(s)
      Tsujimura T.I.、Yanai R.、Mizuno Y.、Tanaka K.、Yoshimura Y.、Tokuzawa T.、Nishiura M.、Sakamoto R.、Motojima G.、Kubo S.、Shimozuma T.、Igami H.、Takahashi H.、Yoshinuma M.、Ohshima S.、The LHD Experiment Group
    • Journal Title

      Nuclear Fusion

      Volume: 61 Issue: 2 Pages: 026012-026012

    • DOI

      10.1088/1741-4326/abc977

    • NAID

      120007180024

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Real-time control of the deposition location of ECRH in the LHD2020

    • Author(s)
      Ii Tsujimura T.、Mizuno Y.、Yanai R.、Tokuzawa T.、Ito Y.、Nishiura M.、Kubo S.、Shimozuma T.、Yoshimura Y.、Igami H.、Takahashi H.、Tanaka K.、Yoshinuma M.、Ohshima S.
    • Journal Title

      Fusion Engineering and Design

      Volume: 153 Pages: 111480-111480

    • DOI

      10.1016/j.fusengdes.2020.111480

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Presentation] Direct Observation of Non-locality of Non-diffusive Counter-gradient Electron Heat Transport2022

    • Author(s)
      T. I. Tsujimura
    • Organizer
      6th Asia Pacific Conference on Plasma Physics
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Propagation properties of electron cyclotron wave with helical wavefront in magnetized plasma2022

    • Author(s)
      T. I. Tsujimura and S. Kubo
    • Organizer
      21st Joint Workshop on Electron Cyclotron Emission and Electron Cyclotron Resonance Heating
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] LHDとHeliotron Jにおける光渦を用いた新しい電子サイクロトロン加熱実験に向けた伝送系の開発2022

    • Author(s)
      辻村亨、久保伸、長﨑百伸、後藤勇樹、釼持尚輝、小田靖久、辻政裕、竹内俊貴、小林策治、坂本欣三、岡田光司、清水貴史、伊藤哲、吉村泰夫、西浦正樹、水野嘉識、矢内亮馬、高橋裕己、伊神弘恵
    • Organizer
      第39回プラズマ・核融合学会年会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 光渦を用いた新しい電子サイクロトロン加熱実験に向けたスパイラル位相ミラーの開発2022

    • Author(s)
      辻村亨、後藤勇樹、岡田光司、小林策治、久保伸
    • Organizer
      第14回核融合エネルギー連合講演会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Propagation properties of optical vortex in magnetized plasma2021

    • Author(s)
      T. Tsujimura
    • Organizer
      40th JSST (Japan Society for Simulation Technology) Annual International Conference on Simulation Technology
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Electron heat transport study during off-axis electron cyclotron heating2021

    • Author(s)
      T. I. Tsujimura, T. Kobayashi, K. Tanaka, K. Ida, K. Nagaoka, M. Yoshinuma, I. Yamada, H. Funaba, T. Kinoshita, T. Tokuzawa, N. Kenmochi, H. Igami, and K. Mukai
    • Organizer
      The 30th International Toki Conference on Plasma and Fusion Research
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Propagation properties of an optical vortex in an electron cyclotron range of frequencies in magnetized plasmas2021

    • Author(s)
      Toru I. Tsujimura and Shin Kubo
    • Organizer
      5th Asia-Pacific Conference on Plasma Physics
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Propagation properties of electron cyclotron waves with helical wavefronts in magnetized plasmas2021

    • Author(s)
      Toru I. Tsujimura and Shin Kubo
    • Organizer
      63rd Annual Meeting of the APS Division of Plasma Physics
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Direct observation of the non-locality of non-diffusive counter-gradient electron thermal transport during the formation of hollow electron-temperature profiles in LHD2021

    • Author(s)
      T. Tsujimura, T. Kobayashi, K. Tanaka, K. Ida, K. Nagaoka, M. Yoshinuma, I. Yamada, H. Funaba, T. Kinoshita, T. Tokuzawa, N. Kenmochi, H. Igami, K. Mukai
    • Organizer
      Asia-Pacific Transport Working Group Meeting & US-EU Transport Task Force Workshop
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Improved Performance of ECRH by Real-Time Deposition Location Control and Perpendicular Injection in LHD2021

    • Author(s)
      T. Tsujimura, R. Yanai, K. Tanaka, Y. Yoshimura, T. Tokuzawa, M. Nishiura, R. Sakamoto, G. Motojima, S. Kubo, T. Shimozuma, H. Igami, H. Takahashi, M. Yoshinuma, S. Ohshima, LHD Experiment Group
    • Organizer
      28th IAEA Fusion Energy Conference
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] LHDプラズマにおけるホロー電子温度分布形成時の非拡散的・非局所的な電子熱輸送の直接観測2021

    • Author(s)
      辻村 亨、小林 達哉,田中 謙治,居田 克巳,永岡 賢一,吉沼 幹朗,山田 一博, 舟場 久芳,木下 稔基,徳澤 季彦,釼持 尚輝,伊神 弘恵,向井 清史
    • Organizer
      第38回プラズマ・核融合学会年会
    • Related Report
      2021 Research-status Report
  • [Presentation] Trajectory Shift in Propagation of Electron Cyclotron Waves due to Berry Curvature in Magnetized Plasma2020

    • Author(s)
      Toru I. TSUJIMURA, Kota YANAGIHARA, Yuki GOTO, Shin KUBO
    • Organizer
      The 29th International Toki Conference on Plasma and Fusion Research
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] 磁化プラズマにおけるヘリカル波面を持つ電子サイクロトロン波の分散特性2020

    • Author(s)
      辻村亨、久保伸
    • Organizer
      第37回プラズマ・核融合学会年会
    • Related Report
      2020 Research-status Report
  • [Presentation] Real-time control of ECH operation in LHD2019

    • Author(s)
      Toru Tsujimura
    • Organizer
      22nd International Tokamak Physics Activity Integrated Operations Scenarios Technical Group Meeting
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Real-time injection control of electron cyclotron resonance heating power in LHD2019

    • Author(s)
      Toru Tsujimura, S. Kubo, T. Shimozuma, Y. Yoshimura, H. Igami, H. Takahashi, R. Yanai, K. Yanagihara
    • Organizer
      23rd Topical Conference on Radiofrequency Power in Plasmas
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Berry曲率が磁化プラズマ中の電子サイクロトロン波の伝播軌道に与えるズレ2019

    • Author(s)
      辻村亨、柳原洸太、後藤勇樹、久保伸
    • Organizer
      第36回プラズマ・核融合学会年会
    • Related Report
      2019 Research-status Report

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

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