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Investigation of boundary structure of ionic pair plasma and development of high perfomance negative ion beam

Research Project

Project/Area Number 17H03002
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Plasma science
Research InstitutionNational Institute for Fusion Science

Principal Investigator

Kenichi Nagaoka  核融合科学研究所, ヘリカル研究部, 教授 (20353443)

Co-Investigator(Kenkyū-buntansha) 高橋 和貴  東北大学, 工学研究科, 准教授 (80451491)
Project Period (FY) 2017-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥17,810,000 (Direct Cost: ¥13,700,000、Indirect Cost: ¥4,110,000)
Fiscal Year 2019: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2018: ¥6,630,000 (Direct Cost: ¥5,100,000、Indirect Cost: ¥1,530,000)
Fiscal Year 2017: ¥7,670,000 (Direct Cost: ¥5,900,000、Indirect Cost: ¥1,770,000)
Keywords負イオンビーム / 負イオン源 / ビーム発散角 / 位相空間構造 / プラズマメニスカス / 負イオン / メニスカス / ペアイオンプラズマ / ビーム集束性 / 水素負イオンビーム / ビーム光学 / RF負イオン源 / ビーム位相空間構造 / ビーム引き出し界面 / ペアプラズマ / ビーム引出界面 / ペッパーポットエミッタンスメータ / ファラデーカップアレイ / 非ガウスビーム成分 / イオン性ペアプラズマ
Outline of Final Research Achievements

Two mechanisms those degrade negative ion beam focusing were experimentally identified in this study. One is dynamic behavior of beamlet such as time evolution of beamlet width and beamlet axis position responding to the plasma density in negative ion source. This mechanism is more important for RF negative ion source. The other is caused by behaviors of triple Gaussian beam identified in the phase space structure of negative ion beam. The coincidence of three beam axis is very important element for focusing of negative ion beamlet. These results modified the concept of negative ion beam meniscus, and pointed out that the conventional approach to negative ion beam meniscus modeling should be improve.

Academic Significance and Societal Importance of the Research Achievements

負イオンビームの高性能化は、核融合プラズマ研究、大型加速器を用いた素粒子物理研究、原子核物理研究、医療用加速器開発研究、先進材料開発研究など様々な科学技術分野の研究を加速することができる重要な技術開発である。本研究計画は、負イオンビームの高性能化を妨げている要因を実験的に指摘することができた。これにより、従来の負イオンビームの集束性の概念を修正する必要性を指摘した。すでに、本研究成果を元に、負イオンビーム高性能化研究に応用する研究に着手しており、今後応用研究としての成果も期待できる。

Report

(4 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Annual Research Report
  • 2017 Annual Research Report
  • Research Products

    (18 results)

All 2020 2019 2018 2017 Other

All Int'l Joint Research (3 results) Journal Article (5 results) (of which Peer Reviewed: 5 results,  Open Access: 5 results) Presentation (10 results) (of which Int'l Joint Research: 4 results,  Invited: 1 results)

  • [Int'l Joint Research] MaxPlank Institute for Plasma Physics/Augsburg University(ドイツ)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] アイントフォーヘン工科大(オランダ)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] MaxPlanck IPP(ドイツ)

    • Related Report
      2018 Annual Research Report
  • [Journal Article] Characterisation of negative ion beam focusing based on phase space structure2020

    • Author(s)
      Haba Yasuaki、Nagaoka Kenichi、Tsumori Katsuyoshi、Kisaki Masashi、Nakano Haruhisa、Ikeda Katsunori、Osakabe Masaki
    • Journal Title

      New Journal of Physics

      Volume: 22 Issue: 2 Pages: 023017-023017

    • DOI

      10.1088/1367-2630/ab6d41

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Response of beam focusing to plasma fluctuation in a filament-arc-type negative ion source2020

    • Author(s)
      Haba Y.、Nagaoka K.、Tsumori K.、Kisaki M.、Takahashi K.、Nakano H.、Ikeda K.、Yoshimura S.、Osakabe M.
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: 59 Issue: SH Pages: SHHA01-SHHA01

    • DOI

      10.35848/1347-4065/ab7473

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Spatiotemporal oscillation of an ion beam extracted from a potential-oscillating plasma source2019

    • Author(s)
      Takahashi Kazunori、Imagi Tsuyoshi、Ishitomi Masashi、Nagaoka Kenichi、Haba Yasuaki、Nakano Haruhisa、Ando Akira、Kisaki Masashi、Tsumori Katsuyoshi、Ikeda Katsunori
    • Journal Title

      New Journal of Physics

      Volume: 21 Issue: 9 Pages: 093043-093043

    • DOI

      10.1088/1367-2630/ab3f70

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Development of a dual beamlet monitor system for negative ion beam measurements2018

    • Author(s)
      Haba Y.、Nagaoka K.、Tsumori K.、Kisaki M.、Nakano H.、Ikeda K.、Fujiwara Y.、Kamio S.、Yoshimura S.、Osakabe M.
    • Journal Title

      Review of Scientific Instruments

      Volume: 89 Issue: 12 Pages: 123303-123303

    • DOI

      10.1063/1.5056260

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Caesiated H- source operation with helium2018

    • Author(s)
      Tsumori K.、Wada M.、Nakano H.、Kisaki M.、Ikeda K.、Haba Y.、Nagaoka K.、Kamio S.、Fujiwara Y.、Osakabe M.
    • Journal Title

      AIP Conference Proceedings

      Volume: 2052 Pages: 040015-040015

    • DOI

      10.1063/1.5083749

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] 負イオンビーム集束性に関する考察2020

    • Author(s)
      永岡賢一 波場泰昭 木崎雅志 中本崚也 津守克嘉 中野治久 宮本賢治 高橋和貴 池田勝則 藤原大 長壁正樹
    • Organizer
      日本物理学会2020年年次大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Experimental observation of negative ion beam oscillation with a filament-arc-type negative ion source2019

    • Author(s)
      Y. Haba K. Nagaoka K. Tsumori M. Kisaki H. Nakano K. Ikeda S. Yoshimura and M. Osakabe
    • Organizer
      XXXIV ICPIG & ICRP-10
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Optical Characteristics of Negative Ion Beam with Multi-Beam-Axes Produced by LHD-type Negative Ion Source2019

    • Author(s)
      Kenichi Nagaoka Yasuaki Haba Katsuyoshi Tsumori Masashi Kisaki Haruhisa Nakano Katsunori Ikeda Shingo Masaki Kenji Miyamoto Kazunori Takahashi and Masaki Osakabe
    • Organizer
      The 18th International Conference on Ion Sources
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] プラズマ加熱用負イオンビーム位相空間構造に基づくビーム光学評価2019

    • Author(s)
      波場泰昭 永岡賢一 津守克嘉 木﨑雅志 中野治久 池田勝則 長壁正樹
    • Organizer
      日本物理学会2019年秋季大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Development of a new beamlet monitor system:Time resolution and phase space structure2018

    • Author(s)
      Y. Haba, K. Nagaoka, K. Tsumori, M. Kisaki, H. Nakano, K. Ikeda, Y. Fujiwara, S. Kamio, S. Yoshimura, and M. Osakabe
    • Organizer
      International symposium on Negativev ion beams and sources
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 負イオンビームプロファイルの高時間分解能計2018

    • Author(s)
      波場泰昭, 永岡賢一, 津守克嘉, 木﨑雅志, 中野治久, 池田勝則, 吉村信次, 長壁正樹
    • Organizer
      プラズマ核融合学会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 負イオンビームレット安定性の実験的評価2018

    • Author(s)
      波場泰昭, 永岡賢一, 津守克嘉, 木﨑雅志, 中野治久, 池田勝則, 吉村信次, 長壁正樹
    • Organizer
      日本物理学会年会
    • Related Report
      2018 Annual Research Report
  • [Presentation] プラズマ加熱用負イオンビームの位相空間構造の実験的評価2018

    • Author(s)
      波場泰昭、永岡賢一、他
    • Organizer
      第73回日本物理学会年会
    • Related Report
      2017 Annual Research Report
  • [Presentation] Experimental observation of phase space structure of negative hydrogen ion beam for plasma heating2017

    • Author(s)
      Y. Haba, K. Nagaoka, el tl.,
    • Organizer
      International Toki Conference 2017
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Experimental observation of phase space structure of negative hydrogen ion beam for plasma heating2017

    • Author(s)
      Y. Haba, K. Nagaoka, el tl.,
    • Organizer
      Plasma Conference 2017
    • Related Report
      2017 Annual Research Report

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Published: 2017-04-28   Modified: 2021-02-19  

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