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Simultaneous measurement of turbulent transport characteristics on the high and low field side in edge tokamak plasma

Research Project

Project/Area Number 21K13898
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 14020:Nuclear fusion-related
Research InstitutionKyushu University

Principal Investigator

MOON Chanho  九州大学, 応用力学研究所, 准教授 (50734753)

Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2023: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2022: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2021: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Keywords核融合プラズマ / プラズマ診断 / 乱流揺動 / ボールペンプローブ / 乱流輸送 / 周辺プラズマ / PANTA / PLATO / 直線磁化装置PANTA / 小型トカマク装置PLATO / ボールペン(BP)プローブ / 磁化プラズマ装置 / 空間電位 / 電子温度 / トカマク
Outline of Research at the Start

磁場閉じ込め核融合研究において,周辺プラズマの熱・粒子輸送機構の解明とその抑制は緊急の課題である. 最近,トカマク周辺プラズマの高・低磁場側における乱流揺動及び輸送の特性が大きく異なることをシミュレーション研究で示した. 大型トカマク装置では一般的に高・低磁場側の乱流揺動の同時計測が難しく,これまでミュレーションと理論の予測の詳細な検証が困難であった. そこで本研究では, 小型トカマク装置PLATO (PLAsma Turbulence Observatory) に高時間分解能の温度・電位揺動計測法を確立して, トカマク周辺プラズマの高・低磁場側の乱流輸送の同時評価を実現する.

Outline of Final Research Achievements

In the field of magnetic confinement fusion research, understanding and controlling the thermal and particle transport mechanisms in the peripheral plasma is an urgent challenge. Recent simulation studies have revealed significant differences in the characteristics of turbulent fluctuations and transport between the high- and low-magnetic-field sides of the magnetically confined plasma. However, simultaneous measurement of turbulent fluctuations on both sides has been difficult in large tokamak devices, making detailed validation of simulations and theoretical predictions challenging. Therefore, in this study, we aimed to establish a high-time-resolution temperature and potential fluctuation measurement method for turbulent transport evaluation using the PANTA device at the initial stage, and ultimately aimed to simultaneously evaluate turbulent transport on the high- and low-magnetic-field sides of the peripheral plasma in the PLATO small tokamak device.

Academic Significance and Societal Importance of the Research Achievements

異常な乱流輸送の原因を解明し、その制御方法を確立することは、核融合発電の実現に向けて重要な一歩である。新しい計測法やプラズマの特性理解に基づく技術革新は、エネルギー技術全般に影響を与える。高い効率で安定したプラズマの閉じ込めが可能になることで、経済的な核融合発電が実現し、将来のエネルギー供給の安定化に寄与すると考えられる。

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • Research Products

    (11 results)

All 2023 2022 2021

All Journal Article (2 results) (of which Peer Reviewed: 2 results,  Open Access: 2 results) Presentation (9 results) (of which Int'l Joint Research: 4 results,  Invited: 1 results)

  • [Journal Article] Proposal of Analysis Method for Pattern Recognition of Two-Dimensional Structure of Plasma2021

    • Author(s)
      KOBAYASHI Taiki、FUJISAWA Akihide、NAGASHIMA Yoshihiko、MOON Chanho、NISHIMURA Daiki、YAMASAKI Kotaro、INAGAKI Shigeru
    • Journal Title

      Plasma and Fusion Research

      Volume: 16 Issue: 0 Pages: 1201082-1201082

    • DOI

      10.1585/pfr.16.1201082

    • NAID

      130008059295

    • ISSN
      1880-6821
    • Year and Date
      2021-06-18
    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Fourier-Rectangular Function Analysis of Spatiotemporal Structure of Bursting Phenomenon in a Cylindrical Plasma2021

    • Author(s)
      NISHIMURA Daiki、FUJISAWA Akihide、NAGASHIMA Yoshihiko、MOON Chanho、YAMASAKI Kotaro、KOBAYASHI Taiki、INAGAKI Shigeru
    • Journal Title

      Plasma and Fusion Research

      Volume: 16 Issue: 0 Pages: 1201075-1201075

    • DOI

      10.1585/pfr.16.1201075

    • NAID

      130008053042

    • ISSN
      1880-6821
    • Year and Date
      2021-06-07
    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Feasibility Study on Direct Measurement of Plasma Potential and Electron Temperature using Ball-Pen Probe in Linear PANTA Device2023

    • Author(s)
      H. Cheong, C. Moon, H. Lee, Y. Nagashima, T. Nishizawa, T-K Kobayashi, D. Nishimura, and A. Fujisawa
    • Organizer
      13th International Conference on Open Magnetic Systems for Plasma Confinement
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Feasibility Study of Direct Measurement of Plasma Potential and Electron Temperature using a Ball-Pen Probe in PANTA2023

    • Author(s)
      D. Di Matteo, A. Fujisawa, Y. Nagashima, T. Yamada, K. Kikuta, and C. Moon
    • Organizer
      27th Branch Conference of the Japan Society for Plasma and Nuclear Fusion Kyushu / Okinawa / Yamaguchi Branch, Yamaguchi
    • Related Report
      2023 Annual Research Report
  • [Presentation] Ball-Pen Probe Method for Direct Measurement of the Plasma Potential and Fluctuations in a Magnetized Linear Device2023

    • Author(s)
      D. Di Matteo, A. Fujisawa, Y. Nagashima, T. Yamada, T. Nishizawa, and C. Moon
    • Organizer
      The Physical Society of Japan 2024 Spring Meeting, held online
    • Related Report
      2023 Annual Research Report
  • [Presentation] ボールペンプローブを用いたPANTAプラズマの電位と電子温度の直接測定2022

    • Author(s)
      文 贊鎬, 永島 芳彦, 西澤 敬之, 山田 琢磨, 小林 大輝, 西村 大輝, 藤澤 彰英
    • Organizer
      日本物理学会 2022年秋季大会
    • Related Report
      2022 Research-status Report
  • [Presentation] Direct Measurement of the Plasma Potential and Electron Temperature using the Ball-pen Probe in Linear Magnetized Plasm2022

    • Author(s)
      C. Moon, A. Fujisawa, Y. Nagashima, T. Nishizawa, T-K Kobayashi, and D. Nishimura
    • Organizer
      6th Asia-Pacific Conference on Plasma Physic
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] 4次元トモグラフィ、プラズマの特異な挙動を観測2021

    • Author(s)
      文 贊鎬
    • Organizer
      九州大学 応用力学研究所(RIAM)フォーラム
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] Verification of ETG mode Energy Transfer to Drift-Wave mode through Multiscale Nonlinear Interactions2021

    • Author(s)
      Chanho Moon, Toshiro Kaneko, Shigeru Inagaki, Akihide Fujisawa, and Rikizo Hatakeyama
    • Organizer
      9th Asia Pacific Transport Working Group (APTWG) International Conference
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Versatile Three-dimensional Tomographic Imaging System for the Plasma Turbulence Dynamic Studies2021

    • Author(s)
      C. Moon, A. Fujisawa, Y. Nagashima, T-K Kobayashi, and D. Nishimura
    • Organizer
      5th Asia-Pacific Conference on Plasma Physics
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] 四次元トモグラフィ計測を用いた直線プラズマのダイナミクス観測2021

    • Author(s)
      文 贊鎬, 稲垣滋, 永島芳彦, 山田琢磨, 糟谷直宏, 小菅佑輔, 小林大輝, 西村大輝, 山崎広太郎,藤澤彰英
    • Organizer
      第38回プラズマ・核融合学会
    • Related Report
      2021 Research-status Report

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Published: 2021-04-28   Modified: 2025-01-30  

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