Electron beam acceleration by auto-resonance cyclotron maser and application to power conversion system

2008 Fiscal Year Final Research Report

• Project/Area Number: 18560815
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Energy engineering
• Research Institution: Japan Atomic Energy Agency
• Principal Investigator: SAKAMOTO Keishi Japan Atomic Energy Agency, 核融合研究開発部門, 研究主席 (90343904)
• Co-Investigator(Kenkyū-buntansha): KASUGAI Atsushi 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, 研究主幹 (70354636) ; TAKAHASHI Koji 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, 研究副主幹 (70354644) ; MINAMI Ryutaro 国立大学法人筑波大学, プラズマ研究センター, 講師 (70370476)
• Project Period (FY): 2006 – 2008
• Keywords: プラズマ・核融合 / 自動サイクロトロン共鳴 / ミリ波帯マイクロ波 / 電子ビーム加速 / ジャイロトロン / 電力変換

Research Abstract

ミリ波を用いた自動サイクロトロン共鳴加速による電子ビーム加速のシミュレーションを行い、電力変換システムへの応用を考察した。オーバーサイズの導波管を用いることにより、一様磁場中でも自動共鳴が保たれること、ビーム電流を高くすることで、短い相互作用長でミリ波が完全吸収され、簡素なミリ波-DC電力変換器が可能であることを示した。ミリ波を用いた電力変換システムの概念を提示し、ジャイロトロンを用いたDC-ミリ波変換、長距離伝送系、ミリ波-DC変換系、それぞれに高効率が得られることを示し、その実現可能性を示した。

Research Products

• [Journal Article] Progress of the high power 170GHz gyrotron in JAEA (2009)
  • Author(s): K. Sakamoto, A. Kasugai, K. Kajiwara, K. Takahashi, Y. Oda, K. Hayashi, N. Kobayashi
  • Journal Title: Nuclear Fusion 49 Pages: 095019
• [Journal Article] Long pulse and high power repetitive operation of the 170GHz ITER Gyrotron (2009)
  • Author(s): K. Kajiwara, K. Sakamoto
  • Journal Title: Plasma and F usion Research 4 Pages: 6-8
  • Peer Reviewed
• [Journal Article] Desig n and testing of ITER ECH&CD transmissi on line components (2009)
  • Author(s): R.W. Callis, J. Doane, H. Grunloh, K. Ka jiwara, A. Kasugai, C. Moeller, Y. Oda, R. Olstad, K. Sakamoto, K. Takahashi
  • Journal Title: 84 Pages: 526-529
  • Peer Reviewed
• [Journal Article] Design of a h igh power millimeter wave launcher for EC H&CD system in ITER (2009)
  • Author(s): K. Kajiwara, K. Takahashi, N. Kobayashi, A. Kajiwara, K. Sakamoto
  • Journal Title: Fusion Enginee ring and Design 84 Pages: 72-77
  • Peer Reviewed
• [Journal Article] Development of 28GHz and 77GHz 1MW Gyrotron for ECRH of mag netically confined plasma (2009)
  • Author(s): T. Kariya, R. Minami, T. Imai, K. Sakamo to, K. Kubo, T. Shimozuma, H. Takahashi, S. Itoh, T. Mutoh, Y. Mitsunaka, Y. Endo, H. S hidara, N. Murofushi, Y. Sakagoshi, H. Yas utake, Y. Okazaki
  • Journal Title: Fusion Scie nce and Technology 55 Pages: 91-94
  • Peer Reviewed
• [Journal Article] Thrust performance of Microwave Rocket under r epetitive pulse operation (2009)
  • Author(s): Y. Oda, T. Shibata, K. Komurasaki, K. Ta kahashi, A. Kasugai, K. Sakamoto
  • Journal Title: Journal of Propulsion and Power 25 Pages: 118-122
  • Peer Reviewed
• [Journal Article] In Tu be Shock Wave Driven by Atmospheric Mil limeter-Wave Plasma (2009)
  • Author(s): Y. Oda, K. Kajiwara, K. Takahashi, A. Ka sugai, K. Sakamoto, K. Komurasaki
  • Journal Title: Japanese Journal of Applied Physics Pages: 118-123
  • Peer Reviewed
• [Journal Article] Steady-state operation of 170GHz 1MW gyrotron for IT ER (2008)
  • Author(s): A. Kasugai, K. Sakamoto, K. Takahashi, K. Kajiwara, N. Kobayashi
  • Journal Title: Nuclear Fusion 48 Pages: 054009
  • Peer Reviewed
• [Journal Article] Improvement de sign of an ITER equatorial launcher (2008)
  • Author(s): K. Takahashi, K. Kajiwara, N. Kobayashi, A. Kasugai, K. Sakamoto
  • Journal Title: 48 Pages: 054009
  • Peer Reviewed
• [Journal Article] A thrust generation model of microwa ve rocket (2007)
  • Author(s): Y. Oda, T. Shibata, K. Komurasaki, K. Ta kahashi, A. Kasugai, K. Sakamoto, et al.
  • Journal Title: J. Space technology and Science 20 Pages: 30-35
  • Peer Reviewed
• [Journal Article] Ach ievement of robust high-efficiency 1MW oscillation in the hard-excitation regi on by a 170GHz continuous wave gyrotron (2007)
  • Author(s): K. Sakamoto, A. Kasugai, K. Takahashi, R. Minami, N. Kobayashi, K. Kajiwara
  • Journal Title: Nature Physics 3 Pages: 411-414
  • Peer Reviewed
• [Journal Article] High power Hi gh efficiency operation of 170GHz gyrotron (2007)
  • Author(s): A. Kasugai, A. Kajiwara, K. Takahashi, N. Kobayashi, K. Sakamoto
  • Journal Title: Fusion Science and technology 51 Pages: 213-216
  • Peer Reviewed
• [Presentation] Progress of the high power gyrotron development in JAEA (2009)
  • Author(s): K. Sakamoto, K. Kajiwara, A. Kasugai, Y. Oda, K. Takahashi, N. Kobayashi
  • Organizer: IEEE The 34th Int. Conf. on Infrared, Millimeter, and Terahertz waves
  • Place of Presentation: Busan, Korea(Invited)
  • Year and Date: 20090000
• [Presentation] Gyrotron beam coupling into corrugate waveguide (2009)
  • Author(s): Y. Oda, K. Kajiwara, K. Takahashi, A. Kasugai, K. Sakamoto, et al.
  • Organizer: IEEE The 34th Int. Conf. on Infrared, Millimeter, and Terahertz waves
  • Place of Presentation: Busan, Korea
  • Year and Date: 20090000
• [Presentation] Gyrotron Beam Coupling Method into Corrugated Waveguide (2009)
  • Author(s): Y. Oda, K. Kajiwara, K. Takahashi, A. Kasugai, K. Sakamoto
  • Organizer: The 18th Topical Conference on Radio Frequency Power in Plasmas
  • Place of Presentation: Ghent, Belgium
  • Year and Date: 20090000
• [Presentation] A structure of breakdown plasma by a high power millimeter wave beam (2008)
  • Author(s): Y. Oda, K. Kajiwara, K. Takahashi, A. Kasugai, K. Sakamoto, K. Komurasaki
  • Organizer: International Congress on Plasma Physics Karlsrhue
  • Place of Presentation: Germany
  • Year and Date: 20080000
• [Presentation] High power gyrotron development for fusion application (2008)
  • Author(s): K. Sakamoto, K. Kajiwara, A. Kasugai, T. Kobayashi, Y. Oda, K. Takahashi, N. Kobayashi, S. Moriyama
  • Organizer: 33rd International Conference on Infrared, Milimeter, and Terahrtz Waves
  • Place of Presentation: Pasadena, USA
  • Year and Date: 20080000
• [Presentation] Development of quasi-optical transmission line for ITER equatorial EC launcher (2008)
  • Author(s): K. Takahashi, K. Kajiwara, N. Kobayashi, A. Kasugai, Y. Oda, T. Kobayashi, S. Moriyama, K. Sakamoto
  • Organizer: 25th Symposium on Fusion Technology
  • Place of Presentation: Lostock, Germany
  • Year and Date: 20080000
• [Presentation] Demonstration of 1MW wuasi-CW operation of 170GHz gyrotron and progress of EC technology (2008)
  • Author(s): A. Kasugai, K. Sakamoto, K. Takahashi, K. Kajiwara, Y. Oda, N. Kobayashi
  • Organizer: 22nd IAEA Fusion Energy Conference
  • Place of Presentation: Geneva, Switzerland
  • Year and Date: 20080000
• [Presentation] A high-power gyrotron and high-power mm wave technology for Fusion Reactor (2008)
  • Author(s): K. Sakamoto, K. Kajiwara, A. Kasugai, Y. Oda, K. Takahashi, T. Kobayashi, A. Isayama, S. Moriyama
  • Organizer: 18th International Toki Conference
  • Place of Presentation: Toki, Japan
  • Year and Date: 20080000
• [Presentation] Demonstration of high efficiency 1MW oscillation by 170GHz CW gyrotron (2007)
  • Author(s): K. Sakamoto, et al.
  • Organizer: Proc. of the joint conference on infrared and mm waves and 15th Int. conf. on terahertz electronics
  • Place of Presentation: Cardiff, UK
  • Year and Date: 20070000
• [Book] E lectron Cyclotron Emission and Electron Cyclotron Resonance Heating (Calculation of the RF propagation for the ITER equatorial ECH/ECCD launcher) (2009)
  • Author(s): K. Kajiwara, (K. Sakamoto), et al.
  • Total Pages: 440-445
  • Publisher: World Scientific Publishing Co. Pte. Ltd
• [Book] STRONG MICROWAV ES: SOURCE AND APPLICATIONS (High power 170GHz gyrotron development in JAEA)
  • Author(s): K. Sakamoto, et al.
  • Total Pages: 7-14
  • Publisher: Russian Academy of Science