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Development of new triangle fast directional switch for high power millimeter wave without frequency modulation

Research Project

Project/Area Number 16K06933
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Nuclear fusion studies
Research InstitutionIbaraki University

Principal Investigator

Saigusa Mikio  茨城大学, 理工学研究科(工学野), 教授 (10292476)

Research Collaborator Imai Tsuyoshi  
Takahashi Koji  
Oda Yasuhisa  
Ikeda Ryosuke  
Honzu Toshihiko  
Mori Junnya  
Shozu Hiroki  
Inoue Fumiaki  
Yokoyama Kana  
Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2018: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2017: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2016: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Keywords核融合 / 電子サイクロトロン / ミリ波 / 高速スイッチ / 固定周波数 / 固有振動 / リング共振器 / 電子サイクロトロン電流駆動 / ジャイロトロン / 大電力 / ミリ波帯 / 周波数固定型 / ミリ波帯高速スイッチ / 電子サイクロトロン波帯 / 加熱電流駆動 / リング共振機 / 振動発生機 / 大電力ミリ波 / 反射板 / 高速振動 / 電流駆動
Outline of Final Research Achievements

A new fast directional switch for high power millimeter waves without frequency modulation was proposed for electron cyclotron current driving system in fusion reactor. The principle is the ring resonator of circular corrugated waveguide with vibrating reflectors. The operation frequency of switch can be adjusted by the thermal expansion using a precision chiller. In 2016, the switching frequency was obtained up to 600 Hz by the two synchronized vibration mirrors. In 2017, the natural vibration reflector was develop for higher frequency operation. In 2018, the new triangle switch which has smaller transmission loss and lighter weight than previous one, was developed. The basic properties of the new triangle switch were measured in low power test. The parasitic resonances were observed at large amplitude vibration of the reflector.

Academic Significance and Societal Importance of the Research Achievements

核融合炉の電子サイクロトロン加熱電流駆動装置用に、固定周波数でMW級大電力ミリ波の高速切換が行えるスイッチを世界で初めて開発した。まだ切換周波数は600 Hz以下までだが、kHzまでの高速切換を可能にする固有振動を利用した反射鏡のアイデアを生み出し、またスイッチのコストダウンのための小型化、冷却を容易にする低損失化も実現した。これらの成果により、大電力ミリ波源であるジャイロトロンの高圧電源のon/off運転によるプラズマの安定化実験は半分の電力で実現可能になり、将来の核融合炉の電子サイクロトロン電流駆動装置のコストは約半分にまで削減できる。

Report

(4 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • 2016 Research-status Report
  • Research Products

    (12 results)

All 2019 2018 2017 2016

All Journal Article (1 results) (of which Peer Reviewed: 1 results) Presentation (11 results) (of which Int'l Joint Research: 4 results)

  • [Journal Article] High power test of a temperature controlled diplexer for electron cyclotron current drive system2017

    • Author(s)
      Mikio Saigusa, Kenji Sekiguchi, Toshihiko Honzu, Junnya Mori, Hiroki Shozu, Yasuhisa Oda, Ryosuke Ikeda, and Koji Takahashi
    • Journal Title

      Fusion Engineering and Design

      Volume: 123 Pages: 385-389

    • DOI

      10.1016/j.fusengdes.2017.03.146

    • Related Report
      2017 Research-status Report 2016 Research-status Report
    • Peer Reviewed
  • [Presentation] 大電力ミリ波帯伝送機器の開発2019

    • Author(s)
      三枝幹雄、生頭広稀,井上史章,横山花奈、池田亮介,小田靖久,小林貴之,高橋幸司,森山伸一、安良田寛,宇野毅
    • Organizer
      平成30年度核融合科学研究所一般共同研究「ギガヘルツ・テラヘルツ帯における要素開発とその応用」研究会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 三角形型大電力ミリ波帯高速スイッチの伝送損失の推定2018

    • Author(s)
      横山 花奈, 井上 史章, 生頭 広稀 , 三枝 幹雄、小田 靖久 , 池田 亮介 , 高橋 幸司
    • Organizer
      第26回電気学会東京支部茨城支所研究発表会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 核融合プラズマの電子サイクロトロン電流駆動用大電力ミリ波帯高速スイッチの高性能化研究2018

    • Author(s)
      生頭広稀,井上史章,横山花奈, 三枝幹雄, 小田靖久, 池田亮介, 高橋幸司
    • Organizer
      第26回電気学会東京支部茨城支所研究発表会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Development of Fast Switching Device of High Power Millimeter Wave Using Natural Vibration for Electron Cyclotron Current Drive System2018

    • Author(s)
      Fumiaki INOUE, Hiroki SHOZU, Kana YOKOYAMA, Mikio SAIGUSA, Yasuhisa ODA, Ryosuke IKEDA, Koji TAKAHASHI
    • Organizer
      The 27th International Toki Conference on Plasma and Fusion Research & The 13th Asia Pacific Plasma Theory Conference
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Research and Development of Broadband Fast Switching Device of High-Power Millimeter Wave2018

    • Author(s)
      Hiroki Shozu, Fumiaki Inoue, Kana Yokoyama, Mikio Saigusa, Yasuhisa Oda, Ryosuke Ikeda, Koji Takahashi
    • Organizer
      The 14th International Student Conference in Ibaraki
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 固有振動を利用した大電力ミリ波帯高速スイッチの開発2018

    • Author(s)
      井上史章、生頭広稀、横山花菜、三枝幹雄、小田靖久、池田亮介、高橋幸司
    • Organizer
      プラズマ・核融合学会 第35回年会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 固有振動を用いた大電力ミリ波帯高速スイッチの提案2017

    • Author(s)
      井上 史章, 生頭 広稀, 三枝 幹雄
    • Organizer
      第25回電気学会東京支部茨城支所研究発表会
    • Related Report
      2017 Research-status Report
  • [Presentation] Research and Development of High-Power Millimeter Wave Broadband Fast Switching Device2017

    • Author(s)
      Hiroki Shozu, Toshihiko Honzu, Junnya Mori, Mikio Saigusa, Yasuhisa Oda, Ryosuke Ikeda, Koji Takahashi
    • Organizer
      Plasma Conference 2017
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] 大電力ミリ波帯周波数固 定 T 字型スイッチの数値解析2016

    • Author(s)
      森 純哉、本圖 理彦、生頭 広稀、三枝 幹雄、 小田 靖久、池田 亮介、高橋 幸司
    • Organizer
      第33回プラズマ・核融合学会年会
    • Place of Presentation
      宮城県仙台市、東北大学青葉山キャンパス
    • Year and Date
      2016-11-29
    • Related Report
      2016 Research-status Report
  • [Presentation] High power test of a temperature controlled diplexer for electron cyclotron current drive system2016

    • Author(s)
      Mikio Saigusa, Kenji Sekiguchi, Toshihiko Honzu, Junnya Mori, Hiroki Shozu, Yasuhisa Oda, Ryosuke Ikeda, and Koji Takahashi
    • Organizer
      29th Symposium on Fusion Technology (SOFT 2016),Prague, P1.28 (2016)
    • Place of Presentation
      チェコ共和国、プラハ
    • Year and Date
      2016-09-05
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Presentation] 周波数変調が 必要ない大電力ミリ波帯高速スイッチの研究開発2016

    • Author(s)
      生頭 広稀、本圖 理彦、森 純 哉、三枝 幹雄、小田 靖久、池田 亮介、高橋 幸司
    • Organizer
      第 24 回電気学会東京支部茨城支所研究発表会
    • Place of Presentation
      茨城県日立 市、日立シビックセンター
    • Related Report
      2016 Research-status Report

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Published: 2016-04-21   Modified: 2020-03-30  

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