Development of 203 GHz band Gyro BWO and accurate measurement of energy difference between two states of positronium

2011 Fiscal Year Final Research Report

• Project/Area Number: 21360167
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Electron device/Electronic equipment
• Research Institution: University of Fukui
• Principal Investigator: IDEHARA Toshitaka 福井大学, 遠赤外領域開発研究センター, 特任教授 (80020197)
• Co-Investigator(Kenkyū-buntansha): OGAWA Isamu 福井大学, 遠赤外領域開発研究センター, 教授 (90214014)
• Project Period (FY): 2009 – 2011
• Keywords: ジャイロBWO / ポジトロニウム / エネルギー準位差

Research Abstract

Development of 203 GHz band frequency tunable Gyro BWO and its application to the first experiment on accurate measurement of energy difference between two states of positronium under collaboration with International Center for Elementary Particle Physics of University of Tokyo. In order to solve the problem on the difference between theoretical and experimental results of HFS measurement, we have developed a new gyrotron device(Gyrotron FU CW GI) with a Gaussian beam output and made a planning of the experimental set-up for this study.

Research Products

• [Journal Article] Development of a compact sub-THz gyrotron FU CW CI for application to high power THz technologies (2012)
  • Author(s): Toshitaka Idehara, Jagadish C. Mudiganti, La Agusu, Tomohiro Kanemaki, Isamu Ogawa, Toshimichi Fujiwara, Yoh Matsuki, Keisuke Ueda
  • Journal Title: J. Infrared, Milli Terahz Waves Volume: 33 Pages: 724-744
  • 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, T. Saito
  • Journal Title: J. Infrared, Milli Terahz Waves Volume: 33 Pages: 292-305
  • Peer Reviewed
• [Journal Article] A spectrometer designed for 6. 7 and 14. 1 T DNP-enhanced solid-state MAS NMR using quasi-optical microwave transmission (2012)
  • Author(s): Kevin J. Pike, Thomas F. Kemp, Hiroki Takahashi, Robert Day, Andrew P. Howes, Eugeny V. Kryukov, James F. MacDonald, Alana E. C. Collis, David R. Bolton, Richard J. Wylde, Marcella Orwick, Kosuke Kosuga, Andrew J. Clark, Toshitaka Idehara, Anthony Watts, Graham M. Smith, Mark E. Newton, Ray Dupree, Mark E. Smith
  • Journal Title: Journal of Magnetic Resonance Volume: 215 Pages: 1-9
  • Peer Reviewed
• [Journal Article] Development of DNP-Enhanced High-Resolution Solid-State NMR System for the Characterization of the Surface Structure of Polymer Materials (2012)
  • Author(s): F. Horii, T. Idehara, Y. Fujii, I. Ogawa, A. Horii, G. Entzminger, F. D. Doty
  • Journal Title: J. Infrared, Milli Terahz Waves Volume: 33 Pages: 756-765
  • 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. D. Mudiganti, I. Ogawa, T. Idehara
  • Journal Title: Plasma and Fusion Research Volume: 7 Pages: 1205004-1-3
  • Peer Reviewed
• [Journal Article] Direct Measu rement of Positronium Hyper Fine Structure :<A New Horizon of Precision Spectroscopy Using Gyrotrons> (2012)
  • Author(s): S. Asai, T. Yamazaki, A. Miyazaki, T. Suehara, T. Namba, T. Kobayashi, H. Saito, T. Idehara, I. Ogawa, S. Sabchevski
  • Journal Title: J. Infrared, Milli Terahz Waves Volume: 33 Pages: 766-776
  • Peer Reviewed
• [Journal Article] Development and Applications of High Frequency Gyrotrons in FIR FU Covering the sub-THz to THz Range (2012)
  • Author(s): T. Idehara, S. P. Sabchevski
  • Journal Title: J. Infrared, Milli Terahz Waves Volume: 33 Pages: 667-694
  • Peer Reviewed
• [Journal Article] X-Ray Detected Magnetic Resonance at sub-THz frequencies using a high power gyrotron source (2012)
  • Author(s): A. Rogalev, J. Goulon, G. Goujon, F. Wilhelm, I. Ogawa, T. Idehara
  • Journal Title: J. Infrared, Milli Terahz Waves Volume: 33 Pages: 777-793
  • Peer Reviewed
• [Journal Article] New Experiment for the First Direct Measure ment of Positronium Hyperfine Splitting with sub-THz Light (2011)
  • Author(s): Akira Miyazaki, Takayuki Yamazaki, Taikan Suehara, Toshio Namba, Shoji Asai, Hruo Saito, Hruo Saito, Toshitaka Idehara, Isamu Ogawa, Yuichi Urushizaki, Svilen Sabchevski
  • Journal Title: Materials Science Forum Volume: Vol.666 Pages: 133-137
  • Peer Reviewed
• [Journal Article] Theoretical investigation of a high efficiency and broadband sub-terahertz gyrotron (2010)
  • Author(s): Nai-Ching Chen, Tsun-Hsu Chang, Ching-Pin. Yuan, Toshitaka Idehara, Isamu Ogawa
  • Journal Title: Journal of Applied Physics Volume: 107 Pages: 161501
  • Peer Reviewed
• [Journal Article] Gyrotron FU CW VII for 300 MHz and 600 MHz DNP-NMR Spectroscopy (2010)
  • Author(s): T. Idehara, K. Kosuga, La Agusu, I. Ogawa, H. Takahashi, M. E. Smith and R. Dupree
  • Journal Title: J. Infrared, Milli Terahz Waves Volume: 31 Pages: 763-774
  • Peer Reviewed
• [Journal Article] Dynamic nuclear polarization experiments at 14. 1 T for solid-state NMR (2010)
  • Author(s): Yoh Matsuki, Toshitaka Idehara, Toshimichi Fujiwara, et al.
  • Journal Title: Physical Chemistry Chemical Physics Volume: 12 Pages: 5799-5803
  • Peer Reviewed
• [Journal Article] Continuously Frequency Tunable High Power Sub-THz Radiation Source (2010)
  • Author(s): Toshitaka Idehara, Kosuke Kosuga, Toshimichi Fujiwara, et al.
  • Journal Title: Gyrotron FU CW VI for 600 MHz DNP-NMR Spectroscopy Volume: 31 Pages: 775-790
  • Peer Reviewed
• [Journal Article] Electron Optical System of the Sub-terahertz Coaxial Gyrotron with Continuous Frequency Tuning (2010)
  • Author(s): V. Manuilov, M. Glyavin, T. Idehara, et. al.
  • Journal Title: J. Infrared, Milli Terahz Waves Volume: 31 Pages: 912-918
  • Peer Reviewed
• [Journal Article] Design of a Compact Sub-Terahertz Gyrotron for Spectroscopic Applications (2010)
  • Author(s): Svilen Petrov Sabchevski, Toshitaka Idehara
  • Journal Title: J. Infrared, Milli Terahz Waves Volume: 31 Pages: 934-948
  • Peer Reviewed
• [Journal Article] Fre quency Tunable Gyrotron FU CW VA for Me asuring Hyperfine Split of Positronium (2010)
  • Author(s): Olgierd Dumbrajs, Toshitaka Idehara
  • Journal Title: J. Infrared, Milli Terahz Waves Volume: 31 Pages: 1265-1270
  • Peer Reviewed
• [Journal Article] Studies of Continuous-Wave Submill imeter-Wave Gyrotrons for Spectroscopy and Diagnostics of Various Media (2009)
  • Author(s): M. Yu Glyavin, T. Idehara, N. Manuilov, T. Saito
  • Journal Title: Radiophysics and Quantum Electronics Volume: 52 Pages: 500-510
  • Peer Reviewed
• [Journal Article] Frequency tunable gyrotron using backward-wave components (2009)
  • Author(s): Tsun-Hsu Chang, Toshitaka Idehara, Isamu Ogawa, La Agusu, and S. Kobayashi
  • Journal Title: Journal of Applied Physics Volume: 105 Pages: 063304
  • Peer Reviewed
• [Presentation] High power THz radiation sources developed in FIR FU and their applications (2011)
  • Author(s): Toshitaka Idehara
  • Organizer: ROC Centennial Workshop on THz Science and Technology
  • Place of Presentation: Hsinchu, Tauwan
  • Year and Date: 2011-12-12
• [Presentation] CAD of Magnetron Injection Guns for Sub-Terahertz Gyrotrons (2011)
  • Author(s): J. C. Muduganti, T. Idehara, Y. Tatematsu, T. Saito, I. Ogawa
  • Organizer: International Photonics Conference 2011(IPC 2011)
  • Place of Presentation: Tainan, Tauwan
  • Year and Date: 2011-12-09
• [Presentation] A Sub-Terahertz Wave Compact Gyrotron for Spectroscopic Application (2011)
  • Author(s): J. C. Mudiganti, T. Idehara, Y. Tatematsu, T. Saito, I. Ogawa
  • Organizer: International Photonics Conference 2011(IPC 2011)
  • Place of Presentation: Tainan, Tauwan
  • Year and Date: 2011-12-09
• [Presentation] High power THz technologies using THz gyrotrons as radiation sources (2011)
  • Author(s): Toshitaka Idehara
  • Organizer: International Photonics Conference 2011(IPC 2011)
  • Place of Presentation: Tainan, Taiwan
  • Year and Date: 2011-12-09
• [Presentation] High power THz technology using high frequency gyrotrons (2010)
  • Author(s): Toshitaka Idehara
  • Organizer: The 3rd Korea-Japan Joint Workshop on THz Technology
  • Place of Presentation: Busan, Korea
  • Year and Date: 2010-12-17
• [Presentation] THz Gyrotron FU CW Series for high power THz technologies (2010)
  • Author(s): T. Idehara, T. Saito, I. Ogawa, S. Mitsudo, Y. Tatematsu, R. Ikeda, J. Mudiganti, K. Kosuga
  • Organizer: The 35th International Conference on Infrared, Millimeter and THz Waves
  • Place of Presentation: Rome, Italy
  • Year and Date: 2010-09-09
• [Presentation] Development of high frequency gyrotrons and application to high power THz technologies (2010)
  • Author(s): T. Idehara, T. Saito, I. Ogawa, S. Mitsudo, Y. Tatematsu
  • Organizer: International Symposium "Terahertz Radiation : Genreration and Application"
  • Place of Presentation: Novosibirsk, Russia
  • Year and Date: 2010-07-28
• [Presentation] HIGH POWER THZ TECH NOLOGIES OPENED BY HIGH POWER RADIATION SOURCES-GYROTRONS (2010)
  • Author(s): T. Idehara, T. Saito, I. Ogawa, S. Mitsudo, Y. Tatematsu
  • Organizer: 2010 International Kharkov Symposium on Physics and Engineering of Micorowaves, Millimeter and Submillimeter Waves
  • Place of Presentation: Kharkov, Ukraine
  • Year and Date: 2010-06-22
• [Presentation] Svelin Sabchevski, Measurement of hyperfine split of positronium atoms using sub-THz gyrotron (2010)
  • Author(s): S. Asai, T. Suehara, G. Akimoto, A. Miyazaki, T. Yamazaki, T. Namba, T. Kobayashi, H. Saito, T. Idehara, I. Ogawa, Y. Urushizaki
  • Organizer: The 3rd International Workshop on Far Infrared Technologies 2010
  • Place of Presentation: Fukui, Japan
  • Year and Date: 2010-03-16
• [Presentation] A DNP-enhanced Solid-State MAS NMR Spectrometer designed for operation at 6. 7 and 14. 1 T using quasi-optical microwave transmission (2010)
  • Author(s): R. Dupree, K. J. Pike, T. H. Kemp, H. Takahashi, R. Day, A. P. Howes, E. V. Kryukov, J. F. MacDonald, A. E. C. Collis, D. V. Bolton, R. J. Wylde, M. Orwick, K. Kosuga, A. J. Klark, T. Idehara, A. Watts, G. M. Smith, M. E. Newton, M. E. Smith
  • Organizer: The 4th International Workshop on Far Infrared technologies
  • Place of Presentation: Fukui, Japan
  • Year and Date: 2010-03-08
• [Presentation] Application of Continuously Frequency-Tunable Sub-MMW Gyrotron to Dynamic Nuclear Polarization for NMR Spectroscopy at 14. 1 T and 30K (2010)
  • Author(s): T. Fujiwara, Y. Matsui, K. Ueda, T. Idehara, R. Ikeda, K. Kosuga, I. Ogawa, S. Nakamura, M. Toda, T. Anai
  • Organizer: The 4th International Workshop on Far Infrared technologies
  • Place of Presentation: Fukui, Japan
  • Year and Date: 2010-03-08
• [Presentation] Direct Measurement of the Hyperfine Structure of the Ground State Positronium using High Power Sub-THz Radiation (2010)
  • Author(s): T. Yamazaki, A. Miyazaki, T. Suehara, T. Namba, S. Asai, T. Kobayashi, H. Saito, T. Idehara, I. Ogawa, S. Sabchevski
  • Organizer: The 4th International Workshop on Far Infrared technologies
  • Place of Presentation: Fukui, Japan
  • Year and Date: 2010-03-08
• [Presentation] Physics of Bloch oscillation in semiconductor supperlattices under intense sub-terahertz radiation from a gyrotron (2010)
  • Author(s): K. Hirakawa, Y. Sakasegawa, H. Tanaka, T. Idehara
  • Organizer: The 4th International Workshop on Far Infrared technologies
  • Place of Presentation: Fukui, Japan
  • Year and Date: 2010-03-08
• [Presentation] A table-top 200 GHz gyrotron FU CW CII with an internal mode converter (2010)
  • Author(s): R. Ikeda, Y. Tatematsu, T. Idehara, Y. Yamaguchi, J. C. Mudiganti, T. Ozeki, T. Kanemaki, I. Ogawa, T. Saito
  • Organizer: The 4th International Workshop on Far Infrared technologies
  • Place of Presentation: Fukui, Japan
  • Year and Date: 2010-03-08
• [Presentation] Development of gyrotrons with an internal mode convertor, Gyrotron FU CW G-series (2010)
  • Author(s): Y. Tatematsu, Y. Yamaguchi, T. Idehara, T. Ozeki, T. Kawase, H. Kato, J. Aiba, R. Ikeda, T. Kanemaki, I. Ogawa, T. Saito
  • Organizer: The 4th International Workshop on Far Infrared technologies
  • Place of Presentation: Fukui, Japan
  • Year and Date: 2010-03-08
• [Presentation] Development and applications of high frequency harmonic gyrotrons-Cooperative research works with institutions in the world- (2010)
  • Author(s): Toshitaka Idehara
  • Organizer: The 4th International Workshop on Far Infrared technologies
  • Place of Presentation: Fukui, Japan
  • Year and Date: 2010-03-07