Research of continuous frequency tunability in high-frequency gyrotron and upgrading of the ability

2013 Fiscal Year Final Research Report

• Project/Area Number: 23760307
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Electron device/Electronic equipment
• Research Institution: Japan Atomic Energy Agency (2013); University of Fukui (2011-2012)
• Principal Investigator: IKEDA Ryosuke 独立行政法人日本原子力研究開発機構, 核融合研究開発部門 那珂核融合研究所, 任期付研究員 (80533364)
• Project Period (FY): 2011 – 2013
• Keywords: ジャイロトロン / Gyro-BWO / テラヘルツ / サブミリ波 / 電子管 / 周波数可変性 / 蛋白質 / 動的核偏極

Research Abstract

A broadband continuous frequency tunable gyrotron was developed as power source for analysis of protein structures. Frequency tuning of about 4 GHz around 395 GHz was observed with output power greater than 50 W by changing the cavity magnetic field. The frequency also varied about 1 GHz as the anode–cathode voltage in a magnetron injection gun varied. Thus, the broadest tuning bandwidth in the 400 GHz band gyrotrons was achieved.

Research Products

• [Journal Article] Broadband Continuously Frequency Tunable Gyrotron for 600MHz DNP-NMR Spectroscopy (2014)
  • Author(s): R. Ikeda, Y. Yamaguchi, Y. Tatematsu, T. Idehara, I. Ogawa, T. Saito, Y. Matsuki and T. Fujiwara
  • Journal Title: Plasma and Fusion Research 9 Pages: 1206058-1-3
  • Peer Reviewed
• [Journal Article] Development of broadband frequency tunable gyrotron operating at the fundamental resonance for 600 MHz DNP-NMR spectroscopy, Proceedings of the 38th International Conference on Infrared (2013)
  • Author(s): R. Ikeda, T. Idehara, Y. Tatematsu, I. Ogawa, Y. Yamaguchi, T. Kanemaki and T. Saito
  • Journal Title: Millimeter, and Terahertz Waves, WE-P2-80
• [Journal Article] Helium-cooling and -spinning dynamic nuclear polarization for sensitivity-enhanced solid-state NMR at 14 T and 30 K (2012)
  • Author(s): Y. Matsuki, K. Ueda, T.Idehara, R. Ikeda, I. Ogawa, S. Nakamura, M. Toda, T. Anai and T. Fujiwar
  • Journal Title: Journal of Magnetic Resonance 225 Pages: 1-9
  • Peer Reviewed
• [Journal Article] Formation of a laminar electron flow for 300 GHz high-power pulsed gyrotron (2012)
  • Author(s): Y. Yamaguchi, Y. Tatematsu, T. Saito, R. Ikeda, J.C. Mudiganti, I. Ogawa, and T. Idehara
  • Journal Title: Physics of Plasmas Volume: 19 Pages: 113113-1-6
  • Peer Reviewed
• [Journal Article] Observation of Dynamic Interactions between Fundamental and Second-Harmonic Modes in a High-Power Sub-Terahertz Gyrotron Operating in Regimes of Soft and Hard Self-Excitation (2012)
  • Author(s): T. Saito, Y. Tatematsu, Y. Yamaguchi, S. Ikeuchi,S. Ogasawara, N. Yamada, R. Ikeda, Ogawa, and T. Idehara
  • Journal Title: Physical Review Letters 109 Pages: 155001-1-5
  • Peer Reviewed
• [Journal Article] Generation of high power sub-terahertz radiation from a gyrotron with second harmonic oscillation (2012)
  • Author(s): T. Saito, N. Yamada, S. Ikeuchi, S. Ogasawara, Y. Tatematsu, R. Ikeda, I. Ogawa, T. Idehara, V.N. Manuilov, T.Shimozuma, S. Kubo, M. Nishiura, K. Tanaka, and K. Kawahata
  • Journal Title: Physics of Plasmas 19 Pages: 063106-1-9
  • Peer Reviewed
• [Journal Article] Formation of Laminar Electron Flow for a High-Power Sub-THz Gyrotron (2012)
  • Author(s): Y. Yamaguchi, Y. Tatematsu, T. Saito, R. Ikeda, J.C. Mudiganti, I. Ogawa and T. Idehara
  • Journal Title: Plasma and Fusion Research Volume: Volume 7 Pages: 1205004-1-3
  • Peer Reviewed
• [Journal Article] Development of a kW Level-200 GHz Gyrotron FU CW GI with an Internal Quasi-optical Mode Convertor (2012)
  • Author(s): Y. Tatematsu, Y. Yamaguchi, T. Idehara, T. Ozeki, R. Ikeda, T. Kanemaki, I. Ogawa and T. Saito
  • Journal Title: Journal of Infrared, Millimeter and Terahertz Waves 33 Pages: 292–305
  • Peer Reviewed
• [Journal Article] Application of Continuously Frequency-Tunable 0.4 THz Gyrotron to Dynamic Nuclear Polarization for 600 MHz Solid-State NMR (2012)
  • Author(s): Y. Matsuki, K. Ueda, T. Idehara, R. Ikeda, K. Kosuga, I. Ogawa, S. Nakamura, M. Toda, T. Anai and T. Fujiwara
  • Journal Title: Journal of Infrared, Millimeter and Terahertz Waves 33 Pages: 745–755
  • Peer Reviewed
• [Journal Article] Development of a continuously frequency tunable gyrotron operating at the fundamental resonance for 600 MHz DNP-NMR spectroscopy (2012)
  • Author(s): R. Ikeda, T. Idehara, I. Ogawa, Y. Tatematsu, T.H. Chang, N.C. Chen, Y. Matsuki, K. Ueda and T. Fujiwara
  • Journal Title: Proceedings of the 37th International Conference on Infrared, Millimeter, and Terahertz Waves, Tue-Pos-29
• [Journal Article] Development of a table-top 200 GHz gyrotron FU CW CII with an internal mode convertor (2012)
  • Author(s): R. Ikeda, Y. Tatematsu, T. Idehara, J.C. Mudiganti, T. Ozeki, T. Kanemaki, I. Ogawa, and T. Saito
  • Journal Title: Proceedings of the 37th International Conference on Infrared, Millimeter, and Terahertz Waves, Mon-C-3-4
• [Journal Article] A table-top 200 GHz gyrotron FU CW CII with an internal mode converter (2012)
  • Author(s): R. Ikeda, Y. Tatematsu, T. Idehara, J.C. Mudiganti, T. Ozeki, T. Kanemaki, I. Ogawa, and T. Saito
  • Journal Title: Proceedings of the 4th International Workshop on Far-Infrared Technologies
• [Journal Article] 200 GHz帯におけるコンパクトジャイロトロンの設計及び400 GHz帯における周波数連続可変ジャイロトロンの開発 (2012)
  • Author(s): 池田亮介,出原敏孝,立松芳典,小川勇,山口裕資,Jagadish. C. Mudiganti,斉藤輝雄
  • Journal Title: 映像情報メディア学会技術報告36 Volume: 5 Pages: 19-26
• [Journal Article] Design of a tabletop gyrotron with an internal mode converter (2011)
  • Author(s): R. Ikeda, Y. Tatematsu, T. Idehara, Y. Yamaguchi, J.C. Mudiganti, T. Ozeki, I. Ogawa and T. Saito
  • Journal Title: Proceedings of the 36th International Conference on Infrared, Millimeter, and Terahertz Waves
• [Presentation] Development of broadband frequency tunable gyrotron operating at the fundamental resonance for 600 MHz DNP-NMR spectroscopy (2013)
  • Author(s): R. Ikeda, T. Idehara, Y. Tatematsu, Isamu Ogawa, Y. Yamaguchi, T. Kanemaki and T. Saito
  • Organizer: The 38th International Conference on Infrared, Millimeter, and Terahertz Waves
  • Place of Presentation: Maintz, Germany
  • Year and Date: 20130901-06
• [Presentation] Development of 203 GHz/ 1 kW table-top size gyrotron FU CW CII (2013)
  • Author(s): R. Ikeda, Y. Tatematsu, T. Idehara, Y. Yamaguchi, I. Ogawa and T. Saito
  • Organizer: International Symposium on Development of Terahertz Gyrotrons and Applications
  • Place of Presentation: University of Fukui
  • Year and Date: 20130901-06
• [Presentation] 400GHz帯高周波数ジャイロトロンにおける周波数連続可変性と高性能化の研究II (2013)
  • Author(s): 池田亮介,桑原太貴,出原敏孝,小川勇,立松芳典,松木陽,植田啓介,藤原敏道, T.H.Chang
  • Organizer: 日本物理学会2013春季大会
  • Place of Presentation: 広島大学東広島キャンパス
  • Year and Date: 20130326-29
• [Presentation] 203 GHzコンパクトジャイロトロンFU CW CIIの開発 (2012)
  • Author(s): 池田亮介,桑原太貴,出原敏孝,小川勇,立松芳典,松木陽,植田啓介,藤原敏道, T.H.Chang
  • Organizer: プラズマ・核融合学会第29回年会
  • Place of Presentation: 福岡県春日市クローバープラザ
  • Year and Date: 20121127-30
• [Presentation] Development of a table-top 200 GHz gyrotron FU CW CII with an internal mode convertor (2012)
  • Author(s): R. Ikeda, Y. Tatematsu, T. Idehara, Y. Yamaguchi, I. Ogawa and T. Saito
  • Organizer: The 37th International Conference on Infrared, Millimeter, and Terahertz Waves
  • Place of Presentation: Wollongong, Australia
  • Year and Date: 20120924-28
• [Presentation] Development of a continuously frequency tunable gyrotron operating at the fundamental resonance for 600 MHz DNP-NMR spectroscopy (2012)
  • Author(s): R. Ikeda, T. Idehara, I. Ogawa, Y. Tatematsu, T.H. Chang, N.C. Chen, Y. Matsuki, K. Ueda and T. Fujiwara
  • Organizer: The 37th International Conference on Infrared, Millimeter, and Terahertz Waves
  • Place of Presentation: Wollongong, Australia
  • Year and Date: 20120924-28
• [Presentation] 600MHz DNP-NMR分光の為の400GHz帯周波数連続可変ジャイロトロンGyrotron FU CW VIBの開発 (2012)
  • Author(s): 池田亮介,桑原太貴,出原敏孝,小川勇,立松芳典,松木陽,植田啓介,藤原敏道, T.H.Chang
  • Organizer: 日本物理学会2012秋季大会
  • Place of Presentation: 横浜国立大学
  • Year and Date: 20120918-21
• [Presentation] 400GHz帯高周波数ジャイロトロンにおける周波数連続可変性と高性能化の研究 (2012)
  • Author(s): 池田亮介,桑原太貴,立松芳典,山口裕資,出原敏孝,小川勇,斉藤輝雄
  • Organizer: 日本物理学会2012秋季大会
  • Place of Presentation: 横浜国立大学
  • Year and Date: 20120918-21
• [Presentation] A table-top 200 GHz gyrotron FU CW CII with an internal mode converter (2012)
  • Author(s): R. Ikeda, Y. Tatematsu, T. Idehara, J.C. Mudiganti, T. Ozeki, T. Kanemaki, I. Ogawa and T. Saito
  • Organizer: The 4th International Workshop on Far-Infrared Technologies
  • Place of Presentation: University of Fukui, Japan
  • Year and Date: 20120307-09
• [Presentation] 200 GHz帯におけるコンパクトジャイロトロンの設計及び400 GHz帯における周波数連続可変ジャイロトロンの開発 (2012)
  • Author(s): 池田亮介,出原敏孝,立松芳典,小川勇,山口裕資,Jagadish. C. Mudiganti,斉藤輝雄
  • Organizer: 第9回赤外放射の応用関連学会年会
  • Place of Presentation: 東京工科大学
  • Year and Date: 2012-02-07
• [Presentation] Design of a tabletop gyrotron with an internal mode converter (2011)
  • Author(s): R. Ikeda, Y. Tatematsu, T. Idehara, Y. Yamaguchi, J.C. Mudiganti, T. Ozeki, I. Ogawa and T. Saito
  • Organizer: The 36th International Conference on Infrared, Millimeter and Terahertz Waves
  • Place of Presentation: Houston, USA
  • Year and Date: 20111002-07
• [Presentation] T.H. Chang,N.C. Chen,基本波発振による400GHz帯周波数連続可変ジャイロトロンの開発 (2010)
  • Author(s): 池田亮介,出原敏孝,小川勇,立松芳典,山田幸毅,山口裕資,斉藤輝雄,松木陽,植田啓介,藤原敏道
  • Organizer: プラズマカンファレンス2011
  • Place of Presentation: 石川県立音楽堂
  • Year and Date: 20101122-25