Direct Measurement of Electron Bernstein Wave using sub-Tera Hertz Scattering for Clarifying Heating Mechanism

• Project/Area Number: 17H03514
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Nuclear fusion studies
• Research Institution: Chubu University (2021-2022); National Institute for Fusion Science (2017-2020)
• Principal Investigator: Kubo Shin 中部大学, 理工学部, 教授 (80170025)
• Co-Investigator(Kenkyū-buntansha): 立松 芳典 福井大学, 遠赤外領域開発研究センター, 教授 (50261756) ; 出射 浩 九州大学, 応用力学研究所, 教授 (70260049) ; 斉藤 輝雄 福井大学, 遠赤外領域開発研究センター, 特命教授 (80143163)
• Project Period (FY): 2017-04-01 – 2022-03-31
• Project Status: Completed (Fiscal Year 2022)
• Budget Amount: ¥15,990,000 (Direct Cost: ¥12,300,000、Indirect Cost: ¥3,690,000); Fiscal Year 2021: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000); Fiscal Year 2020: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000); Fiscal Year 2019: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000); Fiscal Year 2018: ¥5,980,000 (Direct Cost: ¥4,600,000、Indirect Cost: ¥1,380,000); Fiscal Year 2017: ¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
• Keywords: テラヘルツ / 電子バーンシュタイン波動 / 散乱計測 / サブテラヘルツ波 / ジャイロトロン / 電子バーンシュタイン波 / サブミリ波ジャイロトロン / 回折格子 / 準光学ビーム伝搬 / 電磁波散乱計測 / サブテラヘルツジャイロトロン / グレーティング / 電磁波散乱 / グレーティングミラー / スーパーヘテロダイン受信器 / 協同散乱 / サブテラヘルツ波ジャイロトロン

Outline of Final Research Achievements

The Electron Bernstein Wave (EBW) is one of the main heating/current drive methods for the QUEST spherical tokamak of the Kyushu University. Electron Cyclotron Resonance Heating (ECRH) is the most promising heating/current drive method of the fusion plasmas. One important drawback is the electron cyclotron wave cannot propagate inside over-dense plasma. This density limit is critical in the high beta plasma such as spherical tokamak. The EBW can only be excited in the plasma via mode conversion process from electro-magnetic wave injected from outside of the plasma. Due to this indirect excitation process of the wave the direct detection of the EBW inside the plasma and the study of its behavior is required and necessary to optimize the EBW heating. This project is to detect the EBW inside the plasma directly by the electromagnetic wave scattering using sub-Tera Hz wave. Method to design sub-Tera Hz scattering system and estimate EBW quasi-optical wave propagation are developed.

Academic Significance and Societal Importance of the Research Achievements

核融合プラズマにおける電子バーンシュタイン波の振る舞いをテラヘルツ波の散乱により明らかにすることにより、電子バーンシュタイン波加熱、電流駆動の効率化、最適化を図ることができ、通常の電子サイクロトロン波では到達できないオーバデンスプラズマでの電子サイクロトロン加熱・電流駆動の特性を活かしながら、適用範囲を広げることができ、ひいては核融合プラズマ装置の選択幅を広げることができる。また、この過程で開発したミリ波からテラヘルツ波領域での素子である準光学グレーティング設計手法は、今後、核融合プラズマのみならず、様々な分野での応用が期待される。

Research Products

• [Journal Article] Plasmonic Cavity Formation by Circular and Spiral Corrugations (2023)
  • Author(s): OGURA Kazuo、ANNAKA Yuta、KUBO Shin、TSUJIMURA Toru
  • Journal Title: Plasma and Fusion Research Volume: 18 Issue: 0 Pages: 1406007-1406007
  • DOI: 10.1585/pfr.18.1406007
  • ISSN: 1880-6821
  • Year and Date: 2023-02-17
  • Peer Reviewed / Open Access
• [Journal Article] Orbital Angular Momentum of Vortex Fields in Corrugated Cylindrical Waveguide Hybrid Mode (2023)
  • Author(s): Hideki Kawaguchi; Shin Kubo; and Hiroaki Nakamura
  • Journal Title: IEEE Microwave and Wireless Technology Letters Volume: 33 Issue: 2 Pages: 118-121
  • DOI: 10.1109/lmwc.2022.3205060
  • Peer Reviewed
• [Journal Article] Direct Measurement of the Millimeter Wave Phase Singularity with Helical Wavefront using Heterodyne Detection System at Two Spatial Points (2022)
  • Author(s): Yuki GOTO; Shin KUBO; Toru Ii TSUJIMURA; and Toru KOBAYASHI
  • Journal Title: Plasma and Fusion Research Volume: 17 Issue: 0 Pages: 2401007-2401007
  • DOI: 10.1585/pfr.17.2401007
  • ISSN: 1880-6821
  • Year and Date: 2022-03-18
  • Peer Reviewed / Open Access
• [Journal Article] Development of off-axis spiral phase mirrors for generating optical vortices in a range of millimeter waves (2022)
  • Author(s): Tsujimura Toru Ii、Goto Yuki、Okada Koji、Kobayashi Sakuji、Kubo Shin
  • Journal Title: Review of Scientific Instruments Volume: 93 Issue: 4 Pages: 043507-043507
  • DOI: 10.1063/5.0077893
  • Peer Reviewed / Open Access
• [Journal Article] Trajectory Shift in Propagation of Electron Cyclotron Waves Due to Berry Curvature in Magnetized Plasma (2021)
  • Author(s): TSUJIMURA Toru I.、YANAGIHARA Kota、GOTO Yuki、KUBO Shin
  • Journal Title: Plasma and Fusion Research Volume: 16 Issue: 0 Pages: 2401009-2401009
  • DOI: 10.1585/pfr.16.2401009
  • NAID: 130007994290
  • ISSN: 1880-6821
  • Year and Date: 2021-02-10
  • Peer Reviewed / Open Access
• [Journal Article] Propagation properties of electron cyclotron waves with helical wavefronts in magnetized plasma (2021)
  • Author(s): Tsujimura Toru Ii、Kubo Shin
  • Journal Title: Physics of Plasmas Volume: 28 Issue: 1 Pages: 012502-012502
  • DOI: 10.1063/5.0015109
  • Peer Reviewed
• [Journal Article] Initial Result of Neutron Emission Rate Analysis for Ion Cyclotron Range of Frequency Heated Deuterium Plasmas in LHD (2020)
  • Author(s): R. Seki, S. Kamio, H. Kasahara, K. Saito, T. Seki et al.
  • Journal Title: Plasma and Fusion Research Volume: 15 Issue: 0 Pages: 1202088-1202088
  • DOI: 10.1585/pfr.15.1202088
  • NAID: 130007957909
  • ISSN: 1880-6821
  • Year and Date: 2020-12-11
  • Peer Reviewed / Open Access
• [Journal Article] Improved performance of electron cyclotron resonance heating by perpendicular injection in the Large Helical Device (2020)
  • Author(s): Tsujimura T.I.、Yanai R.、Mizuno Y.、Tanaka K.、Yoshimura Y.、Tokuzawa T.、Nishiura M.、Sakamoto R.、Motojima G.、Kubo S.、Shimozuma T.、Igami H.、Takahashi H.、Yoshinuma M.、Ohshima S.、The LHD Experiment Group
  • Journal Title: Nuclear Fusion Volume: 61 Issue: 2 Pages: 026012-026012
  • DOI: 10.1088/1741-4326/abc977
  • NAID: 120007180024
  • Peer Reviewed
• [Journal Article] Real-time control of the deposition location of ECRH in the LHD (2020)
  • Author(s): Ii Tsujimura T.、Mizuno Y.、Yanai R.、Tokuzawa T.、Ito Y.、Nishiura M.、Kubo S.、Shimozuma T.、Yoshimura Y.、Igami H.、Takahashi H.、Tanaka K.、Yoshinuma M.、Ohshima S.
  • Journal Title: Fusion Engineering and Design Volume: 153 Pages: 111480-111480
  • DOI: 10.1016/j.fusengdes.2020.111480
  • Peer Reviewed
• [Journal Article] Electron heating of over-dense plasma with dual-frequency electron cyclotron waves in fully non-inductive plasma ramp-up on the QUEST spherical tokamak (2020)
  • Author(s): H. Idei, T. Onchi, K. Mishra, H. Zushi, T. Kariya, T. Imai, O. Watanabe, R. Ikezoe, K. Hanada, M. Ono, A. Ejiri, J. Qian, K. Nakamura, A. Fujisawa, Y. Nagashima, M. Hasegawa, K. Matsuoka, A. Fukuyama, S. Kubo, M. Yoshikawa, M. Sakamoto, S. Kawasaki, A. Higashijima, S. Ide, Y. Takase and S. Murakami
  • Journal Title: Nuclear Fusion Volume: 60 Issue: 1 Pages: 0160301-13
  • DOI: 10.1088/1741-4326/ab4c12
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Oscillation Characteristics of a High Power 300 GHz Band Pulsed Gyrotron for Use in Collective Thomson Scattering Diagnostics (2019)
  • Author(s): T. Saito, S. Tanaka, R. Shinbayashi, Y. Tatematsu, Y. Yamaguchi, M. Fukunari, S. Kubo, T. Shimozuma, K. Tanaka and M. Nishiura
  • Journal Title: Plasma and Fusion Research Volume: 14 Issue: 0 Pages: 1406104-1406104
  • DOI: 10.1585/pfr.14.1406104
  • NAID: 130007672322
  • ISSN: 1880-6821
  • Year and Date: 2019-06-19
  • Peer Reviewed / Open Access
• [Journal Article] Mode Purity of Electron Cyclotron Waves after Their Passage through the Peripheral Plasma in the Large Helical Device (2019)
  • Author(s): Kota YANAGIHARA, Shin KUBO, Toru I. TSUJIMURA and Ilya Y. DODIN
  • Journal Title: Plasma and Fusion Research Volume: 14 Issue: 0 Pages: 3403103-3403103
  • DOI: 10.1585/pfr.14.3403103
  • NAID: 130007672286
  • ISSN: 1880-6821
  • Year and Date: 2019-06-19
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Quasioptical modeling of wave beams with and without mode conversion. I. Basic theory (2019)
  • Author(s): I. Y. Dodin, D. E. Ruiz, K. Yanagihara, Y. Zhou, and S. Kubo
  • Journal Title: Physics of Plasmas Volume: 26 Issue: 7 Pages: 0721101-20
  • DOI: 10.1063/1.5095076
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Quasioptical modeling of wave beams with and without mode conversion. II. Numerical simulations of single-mode beams (2019)
  • Author(s): K. Yanagihara, I. Y. Dodin , and S. Kubo
  • Journal Title: Physics of Plasmas Volume: 26 Issue: 7 Pages: 0721111-9
  • DOI: 10.1063/1.5095173
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Quasioptical modeling of wave beams with and without mode conversion. III. Numerical simulations of mode-converting beams (2019)
  • Author(s): K. Yanagihara, I. Y. Dodin, and S. Kubo
  • Journal Title: Physics of Plasmas Volume: 26 Issue: 7 Pages: 0721121-8
  • DOI: 10.1063/1.5095174
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Development of high power gyrotrons for advanced fusion devices (2019)
  • Author(s): T. Kariya, R. Minami, T. Imai, M. Okada, F. Motoyoshi, T. Numakura, Y. Nakashima, H. Idei, T. Onchi, K. Hanada, T. Shimozuma, Y. Yoshimura, H. Takahashi, S. Kubo, Y. Oda, R. Ikeda, K. Sakamoto, M. Ono, K. Nagasaki, T. Eguchi, Y. Mitsunaka
  • Journal Title: Nuclear Fusion Volume: 59 Issue: 6 Pages: 066009-066009
  • DOI: 10.1088/1741-4326/ab0e2c
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Isotope effects on energy, particle transport and turbulence in electron cyclotron resonant heating plasma of the Large Helical Device (2019)
  • Author(s): K. Tanaka, Y. Ohtani, M. Nakata, F. Warmer, T. Tsujimura, Y. Takemura, T. Kinoshita, H. Takahashi, M. Yokoyama, R. Seki, H. Igami, Y. Yoshimura, S. Kubo, T. Shimozuma, T. Tokuzawa, T. Akiyama, I. Yamada, R. Yasuhara, H. Funaba, M. Yoshinuma, K. Ida, M. Goto, et al
  • Journal Title: Nuclear Fusion Volume: 59 Issue: 12 Pages: 126040-126040
  • DOI: 10.1088/1741-4326/ab4237
  • NAID: 120007126859
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Diffraction Patterns of the Millimeter Wave with a Helical Wavefront by a Triangular Aperture (2019)
  • Author(s): Yuki Goto, Toru I. Tsujimura, Shin Kubo
  • Journal Title: International Journal of Infrared and Millimeter Waves Volume: 40 Issue: 9 Pages: 943-951
  • DOI: 10.1007/s10762-019-00614-z
  • NAID: 120007098358
  • Peer Reviewed
• [Journal Article] Development of the calibration method for a fast steering antenna for investigating the mode conversion window used in EBW heating in the LHD plasma (2019)
  • Author(s): Goto Yuki、Kubo Shin、Igami Hiroe、Nishiura Masaki、Shimozuma Takashi、Yoshimura Yasuo、Takahashi Hiromi、Tsujimura Toru Ii
  • Journal Title: Japanese Journal of Applied Physics Volume: 58 Issue: 10 Pages: 106001-106001
  • DOI: 10.7567/1347-4065/ab3e58
  • NAID: 120007098357
  • Peer Reviewed
• [Journal Article] Effect of Electron Cyclotron Current Drive on the Ion Temperature in the Plasma Core Region of the Large Helical Device (2018)
  • Author(s): YOSHIMURA Yasuo、EJIRI Akira、SEKI Ryosuke、SAKAMOTO Ryuichi、NAGAOKA Kenichi、SHIMOZUMA Takashi、IGAMI Hiroe、TAKAHASHI Hiromi、TSUJIMURA Toru I.、WARMER Felix、YANAGIHARA Kota、GOTO Yuki、IDA Katsumi、YOSHINUMA Mikiro、KOBAYASHI Tatsuya、KUBO Shin、OSAKABE Masaki、MORISAKI Tomohiro、the LHD Experiment Group
  • Journal Title: Plasma and Fusion Research Volume: 13 Issue: 0 Pages: 1402124-1402124
  • DOI: 10.1585/pfr.13.1402124
  • NAID: 130007543160
  • ISSN: 1880-6821
  • Year and Date: 2018-12-20
  • Peer Reviewed / Open Access
• [Journal Article] Development of the Grating Mirror for the High Power Transmission System and Its General Theory (2018)
  • Author(s): GOTO Yuki、KUBO Shin、TSUJIMURA Toru Ii
  • Journal Title: Plasma and Fusion Research Volume: 13 Issue: 0 Pages: 3405089-3405089
  • DOI: 10.1585/pfr.13.3405089
  • NAID: 130007472549
  • ISSN: 1880-6821
  • Year and Date: 2018-07-10
  • Peer Reviewed / Open Access
• [Journal Article] Analysis Technique of Millimeter-Wave Propagating Modes in an Oversized Corrugated Waveguide Using Developed Beam Profile Monitors (2018)
  • Author(s): SHIMOZUMA Takashi、KOBAYASHI Sakuji、ITO Satoshi、OKADA Kohta、ITO Yasuhiko、YOSHIMURA Yasuo、IGAMI Hiroe、TAKAHASHI Hiromi、TSUJIMURA Toru、MIZUNO Yoshinori、KUBO Shin
  • Journal Title: Plasma and Fusion Research Volume: 13 Issue: 0 Pages: 3405036-3405036
  • DOI: 10.1585/pfr.13.3405036
  • NAID: 130007404693
  • ISSN: 1880-6821
  • Year and Date: 2018-05-10
  • Peer Reviewed / Open Access
• [Journal Article] Realization of high T i plasmas and confinement characteristics of ITB plasmas in the LHD deuterium experiments (2018)
  • Author(s): Takahashi H.、Nagaoka K.、Mukai K.、Yokoyama M.、Murakami S.、Ohdachi S.、Bando T.、Narushima Y.、Nakano H.、Osakabe M.、Ida K.、Yoshinuma M.、Seki R.、Yamaguchi H.、Tanaka K.、Nakata M.、Warmer F.、et al.
  • Journal Title: Nuclear Fusion Volume: 58 Issue: 10 Pages: 106028-106028
  • DOI: 10.1088/1741-4326/aad87e
  • NAID: 120007176950
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Heat flux reconstruction and effective diffusion estimation from perturbative experiments using advanced filtering and confidence analysis (2018)
  • Author(s): van Berkel M.、Kobayashi T.、Vandersteen G.、Zwart H.J.、Igami H.、Kubo S.、Tamura N.、Tsuchiya H.、de Baar M.R.、The LHD Experiment Group
  • Journal Title: Nuclear Fusion Volume: 58 Issue: 9 Pages: 096036-096036
  • DOI: 10.1088/1741-4326/aad13e
  • NAID: 120007181325
  • Peer Reviewed
• [Journal Article] Real-time control of electron cyclotron wave polarization in the LHD (2018)
  • Author(s): Ii Tsujimura T.、Mizuno Y.、Tokuzawa T.、Ito Y.、Kubo S.、Shimozuma T.、Yoshimura Y.、Igami H.、Takahashi H.、Ejiri A.
  • Journal Title: Fusion Engineering and Design Volume: 131 Pages: 130-134
  • DOI: 10.1016/j.fusengdes.2018.04.062
  • NAID: 120007180021
  • Peer Reviewed
• [Journal Article] 154 GHz collective Thomson scattering in LHD (2018)
  • Author(s): K. Tanaka, M. Nishiura, S. Kubo, T. Shimozuma, T. Saito, D. Moseev and I. Abramovic
  • Journal Title: Journal of Instrumentation Volume: 13 Issue: 01 Pages: C01010-C01010
  • DOI: 10.1088/1748-0221/13/01/c01010
  • NAID: 120007126856
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Stable sustainment of plasmas with electron internal transport barrier by ECH in the LHD (2018)
  • Author(s): Y Yoshimura, H Kasahara, M Tokitani, R Sakamoto, Y Ueda, N B Marushchenko, R Seki, S Kubo, T Shimozuma, H Igami, H Takahashi, T I Tsujimura, R Makino, S Kobayashi, S Ito, Y Mizuno, K Okada, T Akiyama, K Tanaka, T Tokuzawa, I Yamada, H Yamada, T Mutoh, Y Takeiri and the LHD Experiment Group,
  • Journal Title: Plasma Physics and Controlled Fusion Volume: 60 Issue: 2 Pages: 25012-25012
  • DOI: 10.1088/1361-6587/aa9950
  • NAID: 120007176991
  • Peer Reviewed
• [Journal Article] 小特集 実は遍在する光渦--光渦の原理・発生・応用展開- (2018)
  • Author(s): 久保 伸, 吉村 信次, 荒巻 光利, 加藤 政博, PETROSKY Tomio,
  • Journal Title: プラズマ・核融合学会誌 Volume: 94 Pages: 119-140
  • Peer Reviewed
• [Journal Article] New evidence and impact of electron transport non-linearities based on new perturbative inter-modulation analysis (2017)
  • Author(s): M. van Berkel, T. Kobayashi, H. Igami, G. Vandersteen, G. M. D. Hogeweij, K. Tanaka, N. Tamura, H. J. Zwart, S. Kubo, S. Ito, H. Tsuchiya, M. R. de Baar and The LHD Experiment Group
  • Journal Title: Nuclear Fusion Volume: 57 Issue: 12 Pages: 126036-126036
  • DOI: 10.1088/1741-4326/aa827a
  • NAID: 120007181328
  • Peer Reviewed
• [Journal Article] Extension of operational regime in high-temperature plasmas and effect of ECRH on ion thermal transport in the LHD (2017)
  • Author(s): Takahashi H., Nagaoka K., Murakami S., Osakabe M., Nakano H., Ida K., Tsujimura T. I., Kubo S., Kobayashi T., Tanaka K., Seki R., Takeiri Y., Yokoyama M., Maeta S., Nakata M. et al
  • Journal Title: Nuclear Fusion Volume: 57 Issue: 8 Pages: 086029-086029
  • DOI: 10.1088/1741-4326/aa754b
  • NAID: 120007176952
  • Peer Reviewed
• [Journal Article] Optimized design of polarizers with low ohmic loss and any polarization state for the 28 GHz QUEST ECH/ECCD system (2017)
  • Author(s): Toru Ii Tsujimura, Hiroshi Idei, Shin Kubo, Sakuji Kobayashi
  • Journal Title: Fusion Engineering and Design Volume: 114 Pages: 97-101
  • DOI: 10.1016/j.fusengdes.2016.11.019
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Collective Thomson scattering of high power ECRH beam in LHD (2010)
  • Author(s): S. Kubo, M. Nishiura, K. Tanaka, T. Shimozuma, Y. Tatematsu, T. Saito, 他11名
  • Journal Title: Rev. Sci. In strum. Volume: 81 Issue: 10
  • DOI: 10.1063/1.3481165
  • Peer Reviewed
• [Presentation] Study on the electron Bernstein wave detection using HCN laser scattering on QUEST (2023)
  • Author(s): S. Kubo, H. Idei
  • Organizer: 11th QUEST Workshop on Spherical Tokamak, Kyushu Univ. RIAM,口頭発表
  • Int'l Joint Research
• [Presentation] サブテラヘルツ波を用いたEBW波動検出の現状 (2022)
  • Author(s): 久保 伸、出射 浩、立松 芳典、斉藤 輝雄
  • Organizer: 第18回QUEST研究会、九州大学応用力学研究所
• [Presentation] Development of quasi optical beam tracing code with relaxed scale constraint (2022)
  • Author(s): F. Asai, S. Kubo, T. Tsujimura, H. Nakano, T. Tanaka
  • Organizer: 31th International Toki Conference on Plasma and Fusion Research
  • Int'l Joint Research
• [Presentation] 準光学ビーム追跡コードの開発 (2022)
  • Author(s): 浅井 史也、久保 伸、辻村 亨、中野 治久、田中 照也
  • Organizer: プラズマ核融合学会 第39回年会、富山国際会議場、口頭発表(22Cp09)
• [Presentation] マイクロ波領域での光渦発生素子の開発 (2022)
  • Author(s): 久保 伸、後藤 勇樹、辻村 亨
  • Organizer: プラズマ核融合学会 第39回年会、富山国際会議場、ポスター発表(23Pp06)
• [Presentation] LHD における遮断密度近傍の電子サイクロトロン加熱の高加熱効率化 (2020)
  • Author(s): 西浦正樹, 久保 伸, 吉村泰夫, 矢内亮馬, 伊藤 哲, 伊神弘恵，辻村 亨，下妻 隆，高橋裕己，釼持尚輝
  • Organizer: プラズマ・核融合学会
• [Presentation] 強磁場側からの基本X モード入射による高密度プラズマの電子サイクロトロン共鳴加熱 (2020)
  • Author(s): 伊神弘恵, 久保 伸, 下妻 隆, 吉村泰夫, 辻村 亨, 矢内亮馬, 釼持尚輝, 田中謙治
  • Organizer: プラズマ・核融合学会
• [Presentation] QUEST おける電子サイクロトロン波電流立ち上げ時の共鳴速度領域制御 (2020)
  • Author(s): 出射 浩, 恩地拓己, 福山雅治, 加藤凌哉, 工藤倫大, 池添竜也, 江尻 晶, 大澤佑規, Y. Peng, 井戸 毅, 花田和明, 小島信一郎, 長谷川 真, 黒田賢剛, 中村一男, 小野雅之, 福山 淳, 假家 強, 辻村 亨, 久保 伸, 高瀬雄一, 村上定義
  • Organizer: プラズマ・核融合学会
• [Presentation] 磁化プラズマにおけるヘリカル波面を持つ電子サイクロトロン波の分散特性 (2020)
  • Author(s): 辻村 亨，久保 伸
  • Organizer: プラズマ・核融合学会
• [Presentation] 400GHz ジャイロトロンを用いた QUEST の8.5GHz 電子バーシュタイン波による散乱計測 (2020)
  • Author(s): 久保 伸, 出射 浩, 斉藤輝雄, 立松芳典
  • Organizer: プラズマ・核融合学会
• [Presentation] LHD における協同トムソン散乱のための受信機感度較正 (2020)
  • Author(s): 足立 迅, 西浦正樹, 田中謙治, 久保 伸,釼持尚輝, 下妻 隆, 矢内亮馬, 斉藤輝雄, LHD 実験グループ
  • Organizer: プラズマ・核融合学会
• [Presentation] 直接計測された電子サイクロトロン波ビーム伝搬の準光学シミュレーション (2020)
  • Author(s): 柳原洸太, 久保 伸, Ilya DODIN, LHD 実験グループ
  • Organizer: プラズマ・核融合学会
• [Presentation] LHD における ECH 用154GHz/116GHz2周波数ジャイロトロンの初期性能試験 (2020)
  • Author(s): 假家 強, 伊藤 哲, 下妻 隆, 吉村泰夫, 南 龍太郎, 沼倉友晴, 今井 剛, 坂本瑞樹, 久保 伸
  • Organizer: プラズマ・核融合学会
• [Presentation] 電子サイクロトロン放射の渦性とその観測 (2020)
  • Author(s): 久保 伸、後藤勇樹、辻村亨
  • Organizer: 日本物理学会第75回年次大会
• [Presentation] 同トムソン散乱計測により得られた散乱スペクトルの速度空間再構成 (2020)
  • Author(s): 西浦正樹，釼持尚輝，奴賀秀男，關良輔，久保伸，田中謙治，足立迅C，下妻隆，斉藤輝雄，Moseev Dmitry，Salewski Mirko，LHD実験グループ
  • Organizer: 日本物理学会第75回年次大会
• [Presentation] Real-time injection control of electron cyclotron resonance heating power in LHD (2019)
  • Author(s): T. Tsujimura, S. Kubo, T. Shimozuma, Y. Yoshimura, H. Igami, H. Takahashi, R. Yanai, K. Yanagihara
  • Organizer: Topical Conference on Radio Frequency Power in Plasmas (2019)
  • Int'l Joint Research / Invited
• [Presentation] Quasioptical simulations of electron cyclotron waves with and without mode conversion (2019)
  • Author(s): K. Yanagihara,I. Dodin, S. Kubo, T. Tsujimura
  • Organizer: 23rd Topical Conference on Radio Frequency Power in Plasmas
  • Int'l Joint Research
• [Presentation] Electron Bernstein wave detection using 400 GHz wave scattering in the QUEST (2019)
  • Author(s): S. Kubo, H. Idei, T. Saito, Y. Tatematsu
  • Organizer: 23rd Topical Conference on Radio Frequency Power in Plasmas
  • Int'l Joint Research
• [Presentation] Study of sub-Tera-Hz gyrotron scattering for a direct detection of EBW in QUEST (2018)
  • Author(s): Shin Kubo, Hiroshi Idei, Teruo Saito, and Yoshinori Tatematsu
  • Organizer: 20th Joint Workshop on Electron Cyclotron Emission and Electron Cyclotron Resonance Heating (EC-20)
  • Int'l Joint Research
• [Presentation] Research of the Electron Cyclotron Emission with Vortex Property from Multi Electrons (2018)
  • Author(s): Y. GOTO S. KUBO, and T. II.TSUJIMURA
  • Organizer: 20th Joint Workshop on Electron Cyclotron Emission and Electron Cyclotron Resonance Heating (EC-20)
  • Int'l Joint Research
• [Presentation] Extension of a ray tracing for polarized diffracting wave beams description in inhomogeneous magnetized plasmas (2018)
  • Author(s): Kota Yanagihara, Shin Kubo, Toru Ii Tsujimura and Hiroaki Nakamura
  • Organizer: 20th Joint Workshop on Electron Cyclotron Emission and Electron Cyclotron Resonance Heating (EC-20)
  • Int'l Joint Research
• [Presentation] Recent progress of the applications of ECRH/ECCD and the supportive technologies in the LHD (2018)
  • Author(s): H. Igami, S. Kubo, T. Shimozuma, Y. Yoshimura, H. Takahashi, T. I. Tsujimura, S. Kobayashi, Y. Mizuno H. Takubo, K. Tanaka, M. Yokoyama, R. Seki, I. Yamada, R. Yasuhara, H. Tsuchiya, K. Ida, M. Yoshinuma, T. Kobayashi, S. Ohdachi, M. Osakabe, T. Morisaki and LHD experiment group
  • Organizer: 20th Joint Workshop on Electron Cyclotron Emission and Electron Cyclotron Resonance Heating (EC-20)
  • Int'l Joint Research / Invited
• [Presentation] Electron Bernstein Wave Detection By Sub-Tera-Hz Scattering In The QUEST (2018)
  • Author(s): Shin Kubo, Hiroshi Idei, Yoshinori Taematsu, Teruo Saito, Moe Iizawa
  • Organizer: 43rd International Conference on InfraRed -MilliMeterWave and Telahertz Waves (IRMMW-THz 2018)
  • Int'l Joint Research
• [Presentation] Developments Of Equipment For Sub-THz Collective Thomson Scattering In LHD (2018)
  • Author(s): Teruo Saito, Shunsuke Tanaka, Ryuji Shinbayashi, Takumi Hirobe, Yuusuke Yamaguchi, Masafumi Fukunari, Yoshinori Tatematsu, Kunizo Ohkubo, Shin Kubo, Takashi Shimozuma, Kenji Tanaka, Masaki Nishiura
  • Organizer: 43rd International Conference on InfraRed -MilliMeterWave and Telahertz Waves (IRMMW-THz 2018)
  • Int'l Joint Research
• [Presentation] Developments Of Millimeter Wave Backscattering Systems For Fusion Plasma Turbulence Measurements (2018)
  • Author(s): Tokihiko Tokuzawa, Kazuki Oguri, Shin Kubo, Kenji Tanaka, Hiroshi Yamada, Kiyomasa Watanabe, Akira Ejiri, Shigeru Inagaki, Teruo Saito, Junko Kohagura
  • Organizer: 43rd International Conference on InfraRed -MilliMeterWave and Telahertz Waves (IRMMW-THz 2018)
  • Int'l Joint Research
• [Presentation] Electron Bernstein wave detection by far-infrared wave scattering in QUEST (2018)
  • Author(s): Shin KUBO, Hiroshi IDEI, Teruo SAITO, Yoshinori TATEMATSU
  • Organizer: 27th International Toki Conference
  • Int'l Joint Research
• [Presentation] Mode purity of electron cyclotron waves after their passage through the peripheral plasma in the Large Helical Device (2018)
  • Author(s): Kota YANAGIHARA, Shin KUBO, Toru I. TSUJIMURA, and Ilya Y. DODIN
  • Organizer: 27th International Toki Conference
  • Int'l Joint Research
• [Presentation] Study on a direct detection of EBW by sub-Tera-Hz gyrotron scattering (2017)
  • Author(s): Shin Kubo, Hiroshi Idei, Teruo Saito, Yoshinori Tatematsu
  • Organizer: 26th International Toki Conference
  • Int'l Joint Research
• [Presentation] Development of the Grating Mirror for the High Power Transmission System and its General Theory (2017)
  • Author(s): Yuki GOTO, Shin KUBO and Toru Ii TSUJIMURA
  • Organizer: 26th International Toki Conference
  • Int'l Joint Research
• [Presentation] Extension of ray tracing for a description of electron cyclotron wave beams in inhomogeneous magnetized plasma (2017)
  • Author(s): Kohta YANAGIHARA, Shin KUBO, Ilya DODIN, Hiroaki NAKAMURA, Toru Tsujimura
  • Organizer: 26th International Toki Conference
  • Int'l Joint Research
• [Presentation] mprovement of Millimeter-Wave Transmission Efficiency Using Beam Profile Monitors in an ECRH Transmission Line (2017)
  • Author(s): Takashi Shimozuma, Sakuji Kobayashi, Satoshi Ito, Yasuhiko Ito, Kohta Okada, Yasuo Yoshimura, Hiroe Igami, Hiromi Takahashi, Toru Tsujimura, Yoshinori Mizuno, Shin Kubo,
  • Organizer: 26th International Toki Conference
  • Int'l Joint Research
• [Presentation] Effect of ECCD on the ion temperature at the plasma core region (2017)
  • Author(s): Y. Yoshimura, T. Shimozuma, H. Igami, H. Takahashi, T. I. Tsujimura, R. Makino, K. Yanagihara, Y. Goto, K. Ida, M. Yoshinuma, T. Kobayashi, K. Nagaoka, R. Sakamoto, S. Kubo, M. Osakabe, T. Morisaki
  • Organizer: International Stellarator/Heliotron Workshop
  • Int'l Joint Research
• [Presentation] Study of optimum injection of ECH for high electron temperature plasmas in the Large Helical Device (2017)
  • Author(s): T. Tsujimura, S. Kubo, T. Shimozuma, Y. Yoshimura, H. Igami, H. Takahashi, and R. Makino,
  • Organizer: Topical Conference on Radio Frequency Power in Plasmas
  • Int'l Joint Research