SAKAI Takeshi

サカイタケシ | SAKAI Takeshi

Affiliation and department：
Job title： Associate Professor

Research field (3)： Electronic devices and equipment , Quantum beam science , Theoretical studies related to particle-, nuclear-, cosmic ray and astro-physics

Research keywords (19)： Coherent Cerenkov Radiation , coherent transition radiation , coherent edge radiation , Coherent tansition radiation , High power terahertz wave , RF window , Klystron , Cryogenic photocathode RF-Gun , RF gun , Coherent THz light souce , X線イメージング , coherent X-ray radiation , Parametric X-ray Radiation , 自由電子レーザー , 電子線形加速器 , 単色X線源 , 波長可変 , Terahertz Vortex , electron linac

Research theme for competitive and other funds (6)：

2021 - 2024 Research on tunable wavelength optical vortex source in high-power terahertz coherent transition radiation
2019 - 2021 Development of an intense terahertz-wave source based on coherent Cherenkov radiation matched to circular plane wave
2016 - 2019 テラヘルツ帯高強度コヒーレントエッジ放射の利用による自由電子レーザー制御の研究
2016 - 2018 テラヘルツ波のパルス蓄積による高強度化に関する研究
2013 - 2016 Study on element-sensitive tomography using parametric X-ray radiation

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Papers (239)：

Yasushi Hayakawa, Takeshi Sakai. Radiation-induced demagnetization of the undulator magnet-array for infrared-FEL and the repair dealing at Nihon University. Journal of the Japanese Society for Synchrotron Radiation Research. 2023. 36. 3. 140-149
Yuma Sasamoto, Tetsuro Kono, Takeshi Sakai. Dependence of Pit Formation in Hard Tissue of Human Teeth on Free Electron Laser Pulse Structures. International Journal of Oral-Medical Sciences. 2023. 21. 4. 137-146
Tetsuro Kono, Toshiro Sakae, Yumiko Takahashi, Takeshi Sakai, Kyoko Nogami, Ken Hayakawa, Arata Watanabe, Toshikazu Uchiyama, Yukie Takamura, Yuuya Togashi, et al. Diffraction-enhanced Imaging of Human Tooth Using Highly Spatial Coherent Parametric X-ray Generated by a Small LINAC System. International Journal of Oral-Medical Sciences. 2022. 21. 1-2. 23-31
KONO Tetsuro, SAKAE Toshiro, SAKAI Takeshi, ZEN Heishun, OHGAKI Hideaki, HAYAKAWA Yasushi and OKADA Hiroyuki. Application of Free Electron Laser in Dentistry -From Research in LEBRA-FEL and KU-FEL-. Journal of Japan Laser Processing Society. 2022. 29. 3. 36-41
Y. Sumitomo, T. Asai, S. Kisaka, H. Koguchi, K. Kusaka, R. Yanagi, Y. Onishi, Y. Hayakawa, D. Kobayashi, S. Kumagai, et al. A Ground Experimental Approach Toward Understanding Mysterious Astrophysical Fast Radio Bursts. International Linear Accelerator Conference (31st). 2022. 735-748

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MISC (17)：

Takeshi Sakai. Development and application of electron linac at LEBRA in Nihon University. Journal of the Japanese Society for Synchrotron Radiation Research. 2021. 34. 3. 153-162
Sei Norihiro, Zen Heishun, Ohgaki Hideaki, Ogawa Hiroshi, Tanaka Toshinari, Hayamawa Yasushi, Sakai Takeshi, Sumitomo Yosuke, Takahashi Yumiko, Hayakawa Ken, et al. Study of coherent edge radiation for the measurement of the bunch length in an electron bunch. Meeting Abstracts of the Physical Society of Japan. 2018. 73. 0. 521-521
野上杏子, 早川建, 田中俊成, 早川恭史, 境武志, 佐藤勇, 清紀弘, 小川博嗣, 榎本收志, 大澤哲, et al. 日大LEBRA電子線形加速器とTHz光源の開発. 日本加速器学会年会(Web). 2016. 13th
清紀弘, 小川博嗣, 早川建, 田中俊成, 早川恭史, 中尾圭佐, 境武志, 野上杏子, 稲垣学, 全炳俊, et al. 高出力テラヘルツ光源開発のためのコヒーレントチェレンコフ放射の研究. 第22回FELとHigh-Power Radiation研究会, 2016年1月21日, つくば. 2016
Sakai T, Tanaka T, Nakao K, Nogami K, Inagaki M, Yoshida M, Takatomi T, Urakawa J. 20pAF-9 Low power test of 2.6-cell cryo-cooled RF-gun test cavity with input coupler. Meeting Abstracts of the Physical Society of Japan. 2016. 71. 0. 577-577

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Lectures and oral presentations (85)：

Current status of interaction experiments with plasma for realization of astrophysical fast radio burst on ground
(the 20th Annual Meeting of Particle Accelerator Society of Japan 2023)
Research towards attosecond x-ray pulse generation using free-electron laser oscillators: 2023
(the 20th Annual Meeting of Particle Accelerator Society of Japan 2023)
Development of vacuum protection system for a plasma interaction experiment
(the 20th Annual Meeting of Particle Accelerator Society of Japan 2023)
Assessment of a hand-made scintillator radiation monitor by an ion chamber toward a point dose evaluation in accelerator operations
(the 20th Annual Meeting of Particle Accelerator Society of Japan 2023)
Development of C-band RF electron gun for injecting electron beam into laser plasma wakefields
(the 20th Annual Meeting of Particle Accelerator Society of Japan 2023)

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Education (3)：

2001 - 2004 Nihon University Graduate School, Division of Science and Engineering Quantum Science and Technology
1999 - 2001 Nihon University Graduate School, Division of Science and Engineering Quantum Science and Technology
1995 - 1999 Nihon University Faculty of Science and Engineering Department of Physics

Work history (10)：

2020/04 - 現在 Nihon University Institute of Quantum Science Associate Professor
2023/04 - 2024/03 Japan Synchrotron Radiation Research Institute
2017/04 - 2020/03 Nihon University Institute of Quantum Science Assistant Professor
2012/04 - 2017/03 Nihon University Institute of Quantum Science Research Assistant
2011/07 - 2012/03 Accuthera Inc. R & D Division

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Committee career (3)：

2023/10 - 現在日本放射光学会日本放射光学会編集委員
2021/10 - 現在日本加速器学会行事委員会委員
2022/12 - 2023/11 日本加速器学会第20回年会組織委員会実行委員長

Awards (1)：

2023/06 - The Japan Society of Infrared Science and Technology The 9th Best Paper Award, Journal of the Japan Infrared Science and Technology Development of coherent edge radiation sources at Laboratory for Electron Beam Research and Application in Nihon University

Association Membership(s) (4)：

The Japan Society of Infrared Science and Technology , The Physical Society of Japan , The Japanese Society for Synchrotron Radiation Research , Particle Accelerator Society of Japan

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