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Research on formation of closed flux surfaces in large tokamaks using ECH/ECCD

Research Project

Project/Area Number 26289357
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypePartial Multi-year Fund
Section一般
Research Field Nuclear fusion studies
Research InstitutionKyoto University

Principal Investigator

Maekawa Takashi  京都大学, エネルギー科学研究科, 名誉教授 (20127137)

Co-Investigator(Kenkyū-buntansha) 田中 仁  京都大学, エネルギー科学研究科, 准教授 (90183863)
打田 正樹  京都大学, エネルギー科学研究科, 助教 (90322164)
Project Period (FY) 2014-04-01 – 2017-03-31
Project Status Completed (Fiscal Year 2016)
Budget Amount *help
¥15,080,000 (Direct Cost: ¥11,600,000、Indirect Cost: ¥3,480,000)
Fiscal Year 2016: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Fiscal Year 2015: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2014: ¥8,320,000 (Direct Cost: ¥6,400,000、Indirect Cost: ¥1,920,000)
KeywordsECH/ECCD / 非誘導立ち上げ / 大型トカマク / 非誘導磁気面形成
Outline of Final Research Achievements

Improvement in engineering of tokamak reactors would be possible, if a hot plasma with the electron temperature up to a few keV and a hundred kilo amperes of plasma current could be non-inductively built up prior to inductive current drive up. From the view point of reactor engineering, electron cyclotron (EC) heating and current drive (ECH/ECCD) is attractive for the non-inductive build up. We have analyzed experimental results on small LATE device in addition to preliminary results on KSTAR and made some modeling to explore new ECH/ECCD method for generation of a hot plasma. We have found that usual O waves are useless and oblique X waves are appropriate for these startup plasmas.

Report

(4 results)
  • 2016 Annual Research Report   Final Research Report ( PDF )
  • 2015 Annual Research Report
  • 2014 Annual Research Report

Research Products

(15 results)

All 2016 2015 2014 Other

All Journal Article (6 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 5 results,  Acknowledgement Compliant: 4 results,  Open Access: 1 results) Presentation (8 results) (of which Int'l Joint Research: 2 results) Remarks (1 results)

  • [Journal Article] Non-inductive Production of Extremely Overdense Spherical Tokamak Plasma by Electron Bernstein Wave Excited via O-X-B Method in LATE2016

    • Author(s)
      H. Tanaka, M. Uchida, T. Maekawa, K. Kuroda, Y. Nozawa, A. Yoshida, D. Watanabe, K. Takamatsu, A. Hoshino, D. Honda, T. Kawaharada
    • Journal Title

      Proceedings of 26th IAEA Fusion Energy Conference

      Volume: IAEA-CN-234 EX/P4-45

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Shift in principal equilibrium current from a vertical to a toroidal one towards the initiation of a closed flux surface in ECR plasmas in the LATE device2016

    • Author(s)
      K. Kuroda, M. Wada, M. Uchida, H. Tanaka and T. Maekawa
    • Journal Title

      Plasma Phys. Control. Fusion

      Volume: 58

    • DOI

      10.1088/0741-3335/58/2/025013

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Non-inductive initiation of closed flux surfaces by ECH/ECCD on KSTAR using an oblique fundamental O-mode injection from the low-field side2016

    • Author(s)
      H. Tanaka, M. Uchida, T. Maekawa, Y.-S. Bae, M. Joung, J.H. Jeong and KSTAR team
    • Journal Title

      Nucl. Fusion

      Volume: 56

    • DOI

      10.1088/0029-5515/56/4/046003

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] Cross-field potential hill arisen eccentrically in toroidal electron cyclotron resonance plasmas in the Low Aspect ratio Torus Experiment device to regulate electron and ion flows from source to boundary2015

    • Author(s)
      K. Kuroda, M. Wada, M. Uchida, H. Tanaka and T. Maekawa
    • Journal Title

      Plasma Phys. Control. Fusion

      Volume: 57

    • DOI

      10.1088/0741-3335/57/7/075010

    • NAID

      120005674608

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Observation of intermittent plasma ejection from a highly overdense spherical tokamak plasma maintained by electron Bernstein wave heating and current drive in LATE2015

    • Author(s)
      H. Tanaka, M. Uchida, T. Maekawa, K. Kuroda, C. Ikeda, T. Shigemura, K. Nagao, M. Wada
    • Journal Title

      Proceedings 25th IAEA Fusion Energy Conference

      Volume: IAEA CN-221 Pages: 1-8

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Non inductive formation of an extremely overdense spherical Tokamak by electron Bernstein wave heating and current drive on LATE2015

    • Author(s)
      Masaki Uchida, Yuto Noguchi, Hitoshi Tanaka and Takashi Maekawa
    • Journal Title

      EC18 - 18th Joint Workshop on Electron Cyclotron Emission and Electron Cyclotron Resonance Heating

      Volume: 87 Pages: 02006-02006

    • DOI

      10.1051/epjconf/20158702006

    • NAID

      120006695742

    • Related Report
      2014 Annual Research Report
    • Open Access
  • [Presentation] 大型トカマクのECH/ECCD による非誘導立ち上げのための数値解析2016

    • Author(s)
      前川 孝, 打田正樹、田中仁、福山淳
    • Organizer
      プラズマ・核融合学会第33回年回
    • Place of Presentation
      東北大学青葉山キャンパス
    • Year and Date
      2016-11-29
    • Related Report
      2016 Annual Research Report
  • [Presentation] 電子バーンスタイン波のみで維持された球状トカマクプラズマの電流を担う高速 電子の軌道の発展と損失2016

    • Author(s)
      打田正樹, 高松恭平, 酒井陽介, 野澤嘉孝, 河原田俊秀, 星野新, 本多大輝, 渡辺大輔, 大村侑司, 梶田竜助, 白井玄佳, 田中仁, 前川孝
    • Organizer
      プラズマ・核融合学会第33回年回
    • Place of Presentation
      東北大学青葉山キャンパス
    • Year and Date
      2016-11-29
    • Related Report
      2016 Annual Research Report
  • [Presentation] 電子バーンスタイン波による無誘導球状トカマク立ち上げの EC共鳴層位置に対する依存性2016

    • Author(s)
      田中仁, 野澤嘉孝, 河原田俊秀, 高松恭平, 星野新, 本多大輝, 渡辺大輔, 大村侑司, 梶田竜助, 酒井陽介, 白井玄佳, 打田正樹, 前川孝
    • Organizer
      プラズマ・核融合学会第33回年回
    • Place of Presentation
      東北大学青葉山キャンパス
    • Year and Date
      2016-11-29
    • Related Report
      2016 Annual Research Report
  • [Presentation] ECR プラズマの磁気面形成に向けた平衡電流の発展- LATE 装置における実験と解析2015

    • Author(s)
      前川 孝
    • Organizer
      第32回プラズマ・核融合学会 年会
    • Place of Presentation
      名古屋大学東山キャンパス・豊田講堂(愛知県・名古屋市)
    • Year and Date
      2015-11-24
    • Related Report
      2015 Annual Research Report
  • [Presentation] LATE での電子バーンスタイン波加熱・電流駆動によるマイ クロ波球状トカマク形成における高速電子の生成と損失2015

    • Author(s)
      打田正樹
    • Organizer
      第32回プラズマ・核融合学会 年会
    • Place of Presentation
      名古屋大学東山キャンパス・豊田講堂(愛知県・名古屋市)
    • Year and Date
      2015-11-24
    • Related Report
      2015 Annual Research Report
  • [Presentation] Observation of toroidal and vertical currents in EC heated plasmas under vertical field in the LATE device2015

    • Author(s)
      K. Kuroda
    • Organizer
      42nd European Physical Society Conference on Plasma Physics
    • Place of Presentation
      Lisbon(Portugal)
    • Year and Date
      2015-06-22
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Modelling of non-inductive current generation upon superposition of vertical field on EC heated plasma in the LATE device2015

    • Author(s)
      M.Uchida
    • Organizer
      42nd European Physical Society Conference on Plasma Physics
    • Place of Presentation
      Lisbon(Portugal)
    • Year and Date
      2015-06-22
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Non inductive start up of tokamaks by ECH/ECCD toward Ip~100kA and Te~1keV2014

    • Author(s)
      Takashi Maekawa
    • Organizer
      US-Japan Workshop on RF Heating Physics
    • Place of Presentation
      京都大学楽友会館
    • Year and Date
      2014-09-17 – 2014-09-19
    • Related Report
      2014 Annual Research Report
  • [Remarks] The Low Aspect Ratio Torus Experiment Group

    • URL

      http://plasma47.energy.kyoto-u.ac.jp/index_e.html

    • Related Report
      2016 Annual Research Report

URL: 

Published: 2014-04-04   Modified: 2018-03-22  

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