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Multi-frequency gyrotron with multi-cavity configurations

Research Project

Project/Area Number 19K04509
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 21060:Electron device and electronic equipment-related
Research InstitutionUniversity of Fukui

Principal Investigator

Yuusuke Yamaguchi  福井大学, 遠赤外領域開発研究センター, 助教 (10466675)

Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
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: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2019: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Keywordsテラヘルツ発振 / 超多周波数発振 / 高周波ジャイロトロン / 三段共振器 / 多段共振器 / 後進波発振 / 二段共振器 / 多周波数発振 / 複合共振器
Outline of Research at the Start

テラヘルツ帯(0.1 ~ 10 THz)の電磁波は,物質・生命科学や気象・天文学,高速の無線通信等を含む多くの分野において応用が期待されているが,発振源の開発の遅れから未踏領域(テラヘルツ・ギャップ)とされてきた.我々は,テラヘルツ帯で高出力・連続発振可能な唯一の電子管であるジャイロトロンを高機能化することで,テラヘルツ・ギャップの開拓に取組む.これまで,ジャイロトロンは,単一周波数での発振を前提として開発されてきた.本研究では,共振器を多段化し,励起し得る共振器モードの数を増やす事で,先例の無い超多周波数での発振が可能なジャイロトロンの実現を目指す.

Outline of Final Research Achievements

We have developed a high-frequency gyrotron that provides a large number of oscillation frequencies in the terahertz range. In this study, the number of oscillation modes (frequencies) has been increased by adopting a two-stage and then a three-stage cavity resonator in a gyrotron. The oscillation experiments showed that oscillation in many modes, which could not be obtained with a single resonator, was possible. 22 modes were observed in the two-stage resonator and 28 modes were observed in the three-stage resonator in the frequency range of 110 to 220 GHz. In addition, continuous frequency tunability was realized with backward wave oscillation, and the occupancy rate in the same frequency range was about 27% for the two-stage resonator and about 30% for the three-stage resonator. The output power is more than several watts making it applicable to a wide range of applications. This improvement in frequency tunability enhances the versatility of the gyrotron as a terahertz source.

Academic Significance and Societal Importance of the Research Achievements

テラヘルツ帯(0.1 ~ 10 THz)の電磁波の需要が高まる中,同周波数帯で高出力かつ連続発振可能な電子管(ジャイロトロン)に注目が集まりつつある.これまで,ジャイロトロンは単一の空胴共振器にて設計,運用されてきた.本研究では,ジャイロトロンに複数の共振器を組み込むことで,より多くの周波数での発振を可能とした.
これまでは,周波数の異なる電磁波を得るために,複数のジャイロトロンを用いる必要があったが,本研究の成果により,単一のジャイロトロンで多くの周波数の電磁波を供給できるようになる.これは,同周波数帯の電磁波の応用研究の促進に,大きく寄与するものである.

Report

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

    (16 results)

All 2021 2020 2019

All Journal Article (3 results) (of which Peer Reviewed: 2 results) Presentation (13 results) (of which Int'l Joint Research: 4 results)

  • [Journal Article] 遠赤外ジャイロトロン施設における装置開発ならびに応用展開2021

    • Author(s)
      山口裕資
    • Journal Title

      放射光

      Volume: 34 Pages: 175-183

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Super Multi-Frequency Oscillations at Fundamental Harmonics With a Complex Cavity Gyrotron2020

    • Author(s)
      Yamaguchi Yuusuke、Ogura Taisei、Ueyama Tatsuya、Maeda Yuto、Takayama Kyoya、Sasano Junki、Fukunari Masafumi、Tatematsu Yoshinori、Saito Teruo
    • Journal Title

      IEEE Electron Device Letters

      Volume: 41 Issue: 8 Pages: 1241-1244

    • DOI

      10.1109/led.2020.3000640

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Observation of Multi-Frequency Oscillations at Second-Harmonics with a Two-Cavity Sub-THz Gyrotron2020

    • Author(s)
      Yamaguchi Yuusuke、Watanabe Masato、Mitsumoto Ryota、Ogura Taisei、Fukunari Masafumi、Tatematsu Yoshinori、Saito Teruo
    • Journal Title

      Proc. of 2020 45th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz)

      Volume: 1 Pages: 1-2

    • DOI

      10.1109/irmmw-thz46771.2020.9370590

    • Related Report
      2020 Research-status Report
  • [Presentation] 100~200 GHz 帯超多周波数発振ジャイロトロンにおける空胴共振器の三段化2021

    • Author(s)
      渡邉将翔,山口裕資,伊藤慎悟,東出昌己,岡本瞭太郎,福成雅史,立松芳典,斉藤輝雄
    • Organizer
      第 38 回 プラズマ核融合学 年会 22Ca08
    • Related Report
      2021 Annual Research Report
  • [Presentation] 120 - 220 GHz 帯の超多周波数発振ジャイロトロンにおける三段共振器の導入2021

    • Author(s)
      東出昌己,山口裕資,渡邉将翔,伊藤慎悟,福成雅史,立松芳典
    • Organizer
      2021 年度 日本物理学会 北陸支部 定例学術講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Recent Progress on Development and Applications of Gyrotrons at FIR UF2021

    • Author(s)
      Y. Tatematsu, Y. Yamaguchi, M. Fukunari Y. Ishikawa, S. Mitsudo and T. Saito
    • Organizer
      The 8th International Workshop on Far-Infrared Technologies 2021
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] Design of a Three-Stage-Cavity for Super Multi-Frequency Oscillations in a 100 - 200 GHz Gyrotron2021

    • Author(s)
      M. Watanabe, Y. Yamaguchi, R. Kani, R. Kamiya, K. Nakagawa, S. Ito, R. Okamoto, M. Fukunari and Y. Tatematsu
    • Organizer
      The 8th International Workshop on Far-Infrared Technologies 2021
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] Observation of Multi-Frequency Oscillations at the Second-Harmonic with a Two-Cavity Sub-THz Gyrotron2020

    • Author(s)
      Yuusuke Yamaguchi, Masato Watanabe, Ryota Mitsumoto, Taisei Ogura, Masafumi Fukunari, Yoshinori Tatematsu and Teruo Saito
    • Organizer
      45th International Conference on Infrared, Millimeter and Terahertz Waves, 2020, P109
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] 100~200 GHz 帯の超多周波数発振ジャイロトロンにおける共振器の三段化の検討2020

    • Author(s)
      可児怜也,渡邉将翔,山口裕資,福成雅史,立松芳典
    • Organizer
      2020年度 日本物理学会 北陸支部 定例学術講演会 2020/12/05 B-a9
    • Related Report
      2020 Research-status Report
  • [Presentation] 高周波ジャイロトロンの組立構造および排気性能の改善設計2020

    • Author(s)
      石岡はるか,山口裕資,福成雅史,立松芳典
    • Organizer
      2020年度 日本物理学会 北陸支部 定例学術講演会 2020/12/05 B-a7
    • Related Report
      2020 Research-status Report
  • [Presentation] 100~200 GHz 帯の超多周波数発振の実現を目指した三段共振器ジャイロトロンの設計2020

    • Author(s)
      渡邉将翔,山口裕資,可児怜也,神谷亮汰,中川和輝,伊藤慎悟,岡本瞭太郎,福成雅史,立松芳典,斉藤輝雄
    • Organizer
      プラズマ・核融合学会 第37回年会 2020/12/03 03Ca05
    • Related Report
      2020 Research-status Report
  • [Presentation] 2 段共振器ジャイロトロン用モード変換器の開発2020

    • Author(s)
      立松芳典,伊藤慎悟,山口裕資,福成雅史
    • Organizer
      プラズマ・核融合学会 第37回年会 2020/12/01 01Cp02
    • Related Report
      2020 Research-status Report
  • [Presentation] Development of a Second Harmonic Multi-Frequency Gaussian Beam Output Gyrotron FU CW GVII2019

    • Author(s)
      Yoshinori Tatematsu, Kyoya Takayama, Yuto Maeda, Tatsuya Ueyama, Taisei Ogura, Kazuki Nakagawa, Ryota Kamiya, Masafumi Fukunari, Yuusuke Yamaguchi, and Teruo Saito
    • Organizer
      44th International Conference on Infrared, Millimeter and Terahertz Waves (2019/09/01 - 06)
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] 超多周波数発振ジャイロトロンの実現に向けた二段共振器の導入2019

    • Author(s)
      山口裕資,三ツ本涼太,渡邉将翔,小椋大聖,福成雅史,金子大輝,神谷亮汰, 中川和輝,上山達也,立松芳典,斉藤輝雄
    • Organizer
      第28回(2019年度)日本赤外線学会研究発表会(2019/11/14 - 15)
    • Related Report
      2019 Research-status Report
  • [Presentation] 二段共振器ジャイロトロンにおける二次高調波の超多周波発振の観測2019

    • Author(s)
      山口裕資,福成雅史,小椋大聖,渡邉将翔,三ツ本涼太,金子大輝,上山達也,中川和輝,立松芳典,斉藤輝雄
    • Organizer
      第36 回プラズマ・核融合学会 年会(2019/11/29 - 12/02)
    • Related Report
      2019 Research-status Report
  • [Presentation] 二段共振器搭載ジャイロトロンにおける 200-400 GHz帯の二次高調波超多周波数発振2019

    • Author(s)
      三ツ本涼太,山口裕資,小椋大聖,福成雅史,渡邉将翔,金子大輝,上山達也,神谷亮汰,中川和輝,立松芳典,斉藤輝雄
    • Organizer
      2019年度 日本物理学会 北陸支部会 定例学術講演会(2019/12/07)
    • Related Report
      2019 Research-status Report

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Published: 2019-04-18   Modified: 2023-01-30  

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