Takahashi Koji 高橋幸司

… Alternative Names

TAKAHASHI KOJI 高橋幸司

TAKAHASHI Koji 高橋幸司

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Researcher Number	70354644
External Links
Affiliation (Current)	2025: 国立研究開発法人量子科学技術研究開発機構, 那珂フュージョン科学技術研究所トカマクシステム技術開発部, 部長 2025: 国立研究開発法人量子科学技術研究開発機構, 那珂研究所トカマクシステム技術開発部, 次長
Affiliation (based on the past Project Information) *help	2016 – 2017: 国立研究開発法人量子科学技術研究開発機構, 那珂核融合研究所 ITERプロジェクト部, 上席研究員(定常) 2015: 国立研究開発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, 研究主幹 2015: 国立研究開発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, 研究主幹 2014: 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, 研究員 2013: 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, 研究員 … More 2013: 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, 研究主幹 2012: 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 2006 – 2008: 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 Less
Review Section/Research Field	Except Principal Investigator Nuclear fusion studies / Energy engineering
Keywords	Except Principal Investigator ジャイロトロン / 単一モード発振 / モード競合 / 500kW / 発振ダイナミクス / テラヘルツ / TE32,18モード / 300GHz / テラヘルツジャイロトロン / プラズマ加熱電流駆動 … More / 電子サイクロトロン / 核融合 / 大電力 / テラヘルツ波 / マルチ周波数 / 電子サイクロトロン加熱 / ミリ波帶マイクロ波 / 電力変換 / 電子ビーム加速 / ミリ波帯マイクロ波 / 自動サイクロトロン共鳴 / プラズマ・核融合 Less

Study of high power terahertz gyrotorn and its oscillatio dynamics
- Principal Investigator
  
  Sakamoto Keishi
- Project Period (FY)
  2013 – 2016
- Research Category
  
  Grant-in-Aid for Scientific Research (A)
- Research Field
  
  Nuclear fusion studies
- Research Institution
  National Institutes for Quantum and Radiological Science and Technology
  Japan Atomic Energy Agency
Mode convertor and built-in mirror for multi frequency high power and long pulse gyrotron
- Principal Investigator
  
  Kajiwara Ken
- Project Period (FY)
  2012 – 2015
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Research Field
  
  Nuclear fusion studies
- Research Institution
  Japan Atomic Energy Agency
Electron beam acceleration by auto-resonance cyclotron maser and application to power conversion system
- Principal Investigator
  
  SAKAMOTO Keishi
- Project Period (FY)
  2006 – 2008
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Research Field
  
  Energy engineering
- Research Institution
  Japan Atomic Energy Agency

All 2017 2015 2014 2013 2012 2009 2008 2007 Other

All Journal Article Presentation

[Journal Article] Development of over-MW gyrotrons for fusion at 14 GHz to sub-THz frequencies2017
- Author(s)
  T. Kariya, T. Imai, R. Minami, K. Sakamoto, Y. Oda, R. Ikeda, T. Shimozuma, S. Kubo, H. Idei, T. Numakura, K. Tsumura, Y. Ebashi, M. Okada, Y. Nakashima, Y. Yoshimura, H. Takahashi, S. Ito, K. Hanada, K. Nagasaki, M. Ono, T. Eguchi, Y. Mitsunaka
- Journal Title
  
  Nuclear Fusion
  
  Volume: 57 Issue: 6 Pages: 066001-066001
- DOI
  10.1088/1741-4326/aa6875
- Peer Reviewed / Open Access / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-16K06940, KAKENHI-PROJECT-25249135, KAKENHI-PROJECT-15H05770, KAKENHI-PROJECT-26249141
[Journal Article] Development of gyrotrons for fusion with power exceeding 1 MW over at wide frequency range2015
- Author(s)
  T. Kariya, T. Imai, R. Minami, T. Numakura, T. Eguchi, T. Kato, Y. Endo, M. Ichimura, T. Shimozuma, S. Kubo, H. Takahashi, Y. Yoshimura, H. Igami, S. Ito, T. Mutoh, K. Sakamoto, H. Idei, H. Zushi, K. Nagasaki, F. Sano, M. Ono, Y. Mitsunaka
- Journal Title
  
  Nucl. Fusion
  
  Volume: 55 Pages: 093009-093009
- Peer Reviewed / Acknowledgement Compliant / Open Access
- Data Source
  KAKENHI-PROJECT-25249135
[Journal Article] High-power and long-pulse operation of TE31,11 mode gyrotron2015
- Author(s)
  R. Ikeda, K.Kajiwara, Y.Oda, K.Takahashi, K.Sakamoto
- Journal Title
  
  Fusion Engineering and Design
  
  Volume: 96-97 Pages: 482-487
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-24561034
[Journal Article] High efficiency coupling of radio frequency beams from the dual frequency gyrotron with a corrugated waveguide transmission system2013
- Author(s)
  小田靖久、梶原健、高橋幸司、満仲義加、坂本慶司
- Journal Title
  
  Review of Scientific Instruments
  
  Volume: 84 Issue: 1
- DOI
  10.1063/1.4772572
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-24561034
[Journal Article] Design of a h igh power millimeter wave launcher for EC H&CD system in ITER2009
- 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
- Data Source
  KAKENHI-PROJECT-18560815
[Journal Article] Desig n and testing of ITER ECH&CD transmissi on line components2009
- 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
- Data Source
  KAKENHI-PROJECT-18560815
[Journal Article] Progress of the high power 170GHz gyrotron in JAEA2009
- Author(s)
  K. Sakamoto, A. Kasugai, K. Kajiwara, K. Takahashi, Y. Oda, K. Hayashi, N. Kobayashi
- Journal Title
  
  Nuclear Fusion 49
  
  Pages: 95019-95019
- Data Source
  KAKENHI-PROJECT-18560815
[Journal Article] In Tu be Shock Wave Driven by Atmospheric Mil limeter-Wave Plasma2009
- 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
- NAID
  40016844226
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-18560815
[Journal Article] Development of 28GHz and 77GHz 1MW Gyrotron for ECRH of mag netically confined plasma2009
- 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
- Data Source
  KAKENHI-PROJECT-18560815
[Journal Article] Improvement design of an ITER equatorial launcher2008
- Author(s)
  K. Takahashi, et. al.
- Journal Title
  
  Nuclear Fusion Vol.48,no.5
  
  Pages: 54014-54014
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-18560815
[Journal Article] Improved design of an ITER equatorial EC launcher2008
- Author(s)
  K.Takahashi, (K.Sakamoto), et.al.
- Journal Title
  
  Nuclear Fusion 48
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-18560815
[Journal Article] Steady-state operation of 170GHz 1MW gyrotron for IT ER2008
- Author(s)
  A. Kasugai, K. Sakamoto, K. Takahashi, K. Kajiwara, N. Kobayashi
- Journal Title
  
  Nuclear Fusion 48
  
  Pages: 54009-54009
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-18560815
[Journal Article] Improvement de sign of an ITER equatorial launcher2008
- Author(s)
  K. Takahashi, K. Kajiwara, N. Kobayashi, A. Kasugai, K. Sakamoto
- Journal Title
  
  48
  
  Pages: 54009-54009
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-18560815
[Journal Article] Ach ievement of robust high-efficiency 1MW oscillation in the hard-excitation regi on by a 170GHz continuous wave gyrotron2007
- Author(s)
  K. Sakamoto, A. Kasugai, K. Takahashi, R. Minami, N. Kobayashi, K. Kajiwara
- Journal Title
  
  Nature Physics 3
  
  Pages: 411-414
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-18560815
[Journal Article] High power Hi gh efficiency operation of 170GHz gyrotron2007
- Author(s)
  A. Kasugai, A. Kajiwara, K. Takahashi, N. Kobayashi, K. Sakamoto
- Journal Title
  
  Fusion Science and technology 51
  
  Pages: 213-216
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-18560815
[Presentation] Study of High Power and High Frequency Gyrotron for FusionReactor2017
- Author(s)
  Keishi Sakamoto, Ryosuke Ikeda, Tsuyoshi Kariya, Yasuhisa Oda, Takayuki Kobayashi, Ken Kajiwara, Kazuo Hayashi, Ryutaro Minami, Koji Takahashi, Tsuyoshi Imai, Shinichi Moriyama
- Organizer
  42th Int.Conf.on Infrared, Millimeter and Terahertz Waves
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-25249135
[Presentation] Development of high power gyrotrons and Mm-wave launcher For ITER2015
- Author(s)
  K. Takahashi , Y. Oda, T. Kobayashi, R. Ikeda, G. Abe, M. Isozaki, H. Shidara, S. Moriyama, K. Kajiwara, K. Sakamoto
- Organizer
  40th International Conference on Infrared, Millimeter, and Terahertz waves (IRMMW-THz)
- Place of Presentation
  Hong Kong (China)
- Year and Date
  2015-08-23
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-24561034
[Presentation] Status of high power gyrotron development in JAEA2015
- Author(s)
  K.Sakamoto, R. Ikeda, Y.Oda, T.Kobayashi, K.Kajiwara, H.Shidara, K.Takahashi, S. Moriyama
- Organizer
  16th International Vacuum Electronics Conference (IVEC 2015)
- Place of Presentation
  Beijing (China)
- Year and Date
  2015-04-27
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-24561034
[Presentation] Study of Sub-Terahertz high power gyrotron for ECH&CD system of DEMO2015
- Author(s)
  Keishi Sakamoto, Tsuyoshi Kariya, Yasuhisa Oda, Ryutaro Minami, Ryosuke Ikeda, Ken Kajiwara, Takayuki Kobayashi, Koji Takahashi, Shinichi Moriyama, Tsuyoshi Imai
- Organizer
  2015 IEEE International Conference on Plasma Science
- Place of Presentation
  Turkey, Antalya
- Year and Date
  2015-05-27
- Data Source
  KAKENHI-PROJECT-25249135
[Presentation] ＤＥＭＯ炉用３００ＧＨｚジャイロトロンの開発2015
- Author(s)
  (3)假家強, 小田靖久, 南龍太郎, 津村康平, 池田亮介, 梶原健, 高橋幸司, 林一生, 今井剛, 坂本慶司
- Organizer
  第32回プラズマ・核融合学会年会
- Place of Presentation
  名古屋大学東山キャンパス
- Year and Date
  2015-11-24
- Data Source
  KAKENHI-PROJECT-25249135
[Presentation] Progress of 300 GHz high order mode gyrotron development2015
- Author(s)
  (1)Yasuhisa Oda, Tsuyoshi Kariya, Ryutaro Minami, Ryosuke Ikeda, Ken Kajiwara, Koji Takahashi, Kazuo Hayashi, Tsuyoshi Imai, Keishi Sakamoto
- Organizer
  40th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz 2015) (Hong Kong, 23 - 28 August 2015) TS-68
- Place of Presentation
  香港
- Year and Date
  2015-08-23
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-25249135
[Presentation] Preliminary result of 300GHz short pulse high order mode gyrotron2014
- Author(s)
  Keishi Sakamoto, Yasuhisa Oda, Tsuyoshi Kariya, Ryutaro Minami, Ryosuke Ikeda, Ken Kajiwara, Koji Takahashi, Kazuo Hayashi, Tsuyoshi Imai
- Organizer
  39th International Conference on Infrared, Millimeter wave, and Terahertz waves
- Place of Presentation
  Tuson, USA
- Year and Date
  2014-09-17
- Data Source
  KAKENHI-PROJECT-25249135
[Presentation] Study of Sub-Terahertz high power gyrotron for ECH&CD system of DEMO2014
- Author(s)
  Keishi Sakamoto, Tsuyoshi Kariya, Yasuhisa Oda, Ryutaro Minami, Ryosuke Ikeda, Ken Kajiwara, Takayuki Kobayashi, Koji Takahashi, Shinichi Moriyama, Tsuyoshi Imai
- Organizer
  Plasma Conference 2014
- Place of Presentation
  新潟
- Year and Date
  2014-11-21
- Data Source
  KAKENHI-PROJECT-25249135
[Presentation] Progress of Development for 170GHz Gyrotron and 5kHz Modulation Power Supply for ITER2013
- Author(s)
  梶原健、小田靖久、池田亮介、高橋幸司、坂本慶司
- Organizer
  20th Topical Conference on Radio Frequency Power in Plasmas
- Place of Presentation
  ソレント（イタリア）
- Data Source
  KAKENHI-PROJECT-24561034
[Presentation] Status of high power gyrotron development in JAEA2013
- Author(s)
  坂本慶司、梶原健、小田靖久、林一生、高橋幸司
- Organizer
  IEEE 14th International Vacuum Electronics Conference (IVEC)
- Place of Presentation
  パリ（フランス）
- Data Source
  KAKENHI-PROJECT-24561034
[Presentation] A Study of High Efficient Beam Coupling of High Power Gyrotron and Transmission Line2012
- Author(s)
  小田靖久、梶原健、高橋幸司、坂本慶司
- Organizer
  The 37th International Conference on Infrared, Milimeter and Terahertz Waves (IRMMW-THz)
- Place of Presentation
  ウロンゴン（オーストラリア）
- Data Source
  KAKENHI-PROJECT-24561034
[Presentation] Progress of high power long pulse gyrotron development in JAEA2012
- Author(s)
  坂本慶司、梶原健、小田靖久、林一生、高橋幸司
- Organizer
  39th European Physical Society Conference on Plasma Physics
- Place of Presentation
  ストックホルム（スウェーデン）
- Data Source
  KAKENHI-PROJECT-24561034
[Presentation] Progress on the Development of High Power Long Pulse Gyrotron and Related Technologies2012
- Author(s)
  梶原健、坂本慶司、小田靖久、林一生、高橋幸司、春日井敦
- Organizer
  24th IAEA Fusion Energy Conference (FEC 2012)
- Place of Presentation
  サンディエゴ（アメリカ）
- Data Source
  KAKENHI-PROJECT-24561034
[Presentation] Gyrotron beam coupling into corrugate waveguide2009
- 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
- Data Source
  KAKENHI-PROJECT-18560815
[Presentation] Gyrotron Beam Coupling Method into Corrugated Waveguide2009
- 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
- Data Source
  KAKENHI-PROJECT-18560815
[Presentation] Progress of the high power gyrotron development in JAEA2009
- 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)
- Data Source
  KAKENHI-PROJECT-18560815
[Presentation] A structure of breakdown plasma by a high power millimeter wave beam2008
- 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
- Data Source
  KAKENHI-PROJECT-18560815
[Presentation] Development of quasi-optical transmission line for ITER equatorial EC launcher2008
- 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
- Data Source
  KAKENHI-PROJECT-18560815
[Presentation] Development of quasi-optical transmission line for ITER equatorial EC launcher2008
- Author(s)
  K.Takahashi, (K.Sakamoto), et al.
- Organizer
  25^<th> symposium on fusion technology
- Place of Presentation
  ロストック(ドイツ)
- Year and Date
  2008-09-17
- Data Source
  KAKENHI-PROJECT-18560815
[Presentation] Demonstration of 1MW wuasi-CW operation of 170GHz gyrotron and progress of EC technology2008
- 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
- Data Source
  KAKENHI-PROJECT-18560815
[Presentation] A high-power gyrotron and high-power mm wave technology for Fusion Reactor2008
- 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
- Data Source
  KAKENHI-PROJECT-18560815
[Presentation] High power gyrotron development for fusion application2008
- 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
- Data Source
  KAKENHI-PROJECT-18560815
[Presentation] Experiments of High - Power Multi - Frequency Gyrotron and Long Distance Transmission
- Author(s)
  池田亮介、梶原健、小田靖久、高橋幸司、坂本慶司
- Organizer
  28th Symposium on Fusion Technology
- Place of Presentation
  サン・セバスティアン(スペイン)
- Year and Date
  2014-09-29 – 2014-10-03
- Data Source
  KAKENHI-PROJECT-24561034

1. SAKAMOTO Keishi (90343904)

# of Collaborated Projects: 3 results

# of Collaborated Products: 35 results
2. MINAMI Ryutaro (70370476)

# of Collaborated Projects: 2 results

# of Collaborated Products: 9 results
3. Kajiwara Ken (90450311)

# of Collaborated Projects: 2 results

# of Collaborated Products: 16 results
4. ODA YASUIHSA (60512209)

# of Collaborated Projects: 2 results

# of Collaborated Products: 16 results
5. KASUGAI Atsushi (70354636)

# of Collaborated Projects: 1 results

# of Collaborated Products: 14 results
6. 小林貴之 (10465974)

# of Collaborated Projects: 1 results

# of Collaborated Products: 3 results
7. 假家強 (30451678)

# of Collaborated Projects: 1 results

# of Collaborated Products: 7 results
8. 今井剛 (80354637)

# of Collaborated Projects: 1 results

# of Collaborated Products: 7 results
9. 下妻隆

# of Collaborated Projects: 0 results

# of Collaborated Products: 1 results

Takahashi Koji 高橋 幸司

TAKAHASHI KOJI 高橋 幸司

TAKAHASHI Koji 高橋 幸司

Research Projects

Research Products

Co-Researchers

Study of high power terahertz gyrotorn and its oscillatio dynamics

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

Mode convertor and built-in mirror for multi frequency high power and long pulse gyrotron

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

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

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

[Journal Article] Development of over-MW gyrotrons for fusion at 14 GHz to sub-THz frequencies2017

Author(s)

Journal Title

DOI

Data Source

[Journal Article] Development of gyrotrons for fusion with power exceeding 1 MW over at wide frequency range2015

Author(s)

Journal Title

Data Source

[Journal Article] High-power and long-pulse operation of TE31,11 mode gyrotron2015

Author(s)

Journal Title

Data Source

[Journal Article] High efficiency coupling of radio frequency beams from the dual frequency gyrotron with a corrugated waveguide transmission system2013

Author(s)

Journal Title

DOI

Data Source

[Journal Article] Design of a h igh power millimeter wave launcher for EC H&CD system in ITER2009

Author(s)

Journal Title

Data Source

[Journal Article] Desig n and testing of ITER ECH&CD transmissi on line components2009

Author(s)

Journal Title

Data Source

[Journal Article] Progress of the high power 170GHz gyrotron in JAEA2009

Author(s)

Journal Title

Data Source

[Journal Article] In Tu be Shock Wave Driven by Atmospheric Mil limeter-Wave Plasma2009

Author(s)

Journal Title

NAID

Data Source

[Journal Article] Development of 28GHz and 77GHz 1MW Gyrotron for ECRH of mag netically confined plasma2009

Author(s)

Journal Title

Data Source

[Journal Article] Improvement design of an ITER equatorial launcher2008

Author(s)

Journal Title

Data Source

[Journal Article] Improved design of an ITER equatorial EC launcher2008

Author(s)

Journal Title

Data Source

[Journal Article] Steady-state operation of 170GHz 1MW gyrotron for IT ER2008

Author(s)

Journal Title

Data Source

[Journal Article] Improvement de sign of an ITER equatorial launcher2008

Author(s)

Journal Title

Data Source

[Journal Article] Ach ievement of robust high-efficiency 1MW oscillation in the hard-excitation regi on by a 170GHz continuous wave gyrotron2007

Takahashi Koji 高橋幸司

TAKAHASHI KOJI 高橋幸司

TAKAHASHI Koji 高橋幸司