Website of Takeshi Fujiwara (AIST)

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last updated 2023.10.2
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CV
藤原 健(Takeshi FUJIWARA)
国立研究開発法人産業技術総合研究所(Website)
研究戦略企画部 研究戦略企画室 企画主幹
(兼)企画本部企画室
(兼)計量標準総合センター(Website)
分析計測標準研究部門(Website)
放射線イメージング計測研究グループ (Website)

Planning Officer
Research Strategy Planning Office
Research Strategy Planning Department
National Institute of Advanced Industrial Science and Technology (AIST)

〒305-8568 茨城県つくば市梅園1-1-1 中央第2
E-mail:fujiwara-t@aist.go.jp




News
Career
  • 2009 博士(工学)取得
  • 2009 - 2010 東京大学大学院工学系研究科原子力国際専攻 特任研究員
  • 2010 - 2015 東京大学大学院工学系研究科原子力専攻 助教
  • 2015 - 2019 産業技術総合研究所 分析計測標準研究部門 研究員
  • 2019 - 2023 産業技術総合研究所 分析計測標準研究部門 主任研究員
  • 2023.4 - 2023.9 産業技術総合研究所 分析計測標準研究部門 上級主任研究員
  • 2023.10 - 現在 産業技術総合研究所 研究戦略企画部 企画主幹


  • 2009 Got Ph.D (Nuclear engineering)
  • 2009 - 2010 Postdoc at University of Tokyo
  • 2010 - 2015 Research associate at University of Tokyo
  • 2015 - 2019 Researcher at AIST
  • 2019 - 2023 Senior Researcher at AIST
  • 2023 - 2023 Chief Senior Researcher at AIST
  • 2023 - Current Planning Officer at AIST


Publication


  1. Takeshi Fujiwara, Koichi Kino, Nagayasu Oshima, and Michihiro Furusaka,
    "Development of a Bragg-edge Neutron Transmission Imaging Detector Combined with Micro-structured Boron Cathode and Glass Gas Electron Multiplier",
    Sensors and Materials, Vol. 35, 2, pp. 537. (2023)
    doi:10.18494/SAM4147

  2. Hiromi Kimura, Takeshi Fujiwara, Masahito Tanaka, Takumi Kato, Daisuke Nakauchi, Noriaki Kawaguchi, and Takayuki Yanagida,
    "Radiation induced luminescence properties of Ce-doped ZnBr2-based glasses",
    Sensors and Materials, Vol. 35, 2, pp. 513. (2023)
    doi:10.18494/SAM4147

  3. Yasuhiro. Unno, Takeshi Fujiwara, Yuji Kishimoto and Toshiya Sanami,
    "Gas gain measurement for charged particle spectroscopy using glass GEM in low-pressure P-10 gas",
    Journal of Instrumentation, Vol. 18, 1, pp.P01001- (2023)
    10.1088/1748-0221/18/01/P01001

  4. Takeshi Fujiwara, Masahito Tanaka and Ryunosuke Kuroda, "A review of the development of medical radiation imaging detectors at AIST",
    Journal of the Imaging Society of Japan, Vol. 61, 6, pp. 636. (2022)
    doi:10.11370/isj.61.636

  5. Takeshi Fujiwara, Hiroaki Miyoshi, Yuki Mitsuya, Norifumi L. Yamada, Yasuo Wakabayashi, Yoshie Otake, Masahiro Hino, Koichi Kino, Masahito Tanaka, Nagayasu Oshima, and Hiroyuki Takahashi,
    "Neutron flat-panel detector using In–Ga–Zn–O thin-film transistor",
    Review of Scientific Instruments, Vol. 93, 1, pp. 013304. (2022)
    doi:10.1063/5.0066557

  6. Yuki Mitsuya, Kenji Shimazoe, Takeshi Fujiwara, and Hiroyuki Takahashi
    "Energy-resolved neutron imaging with glass gas electron multiplier and dynamic time-over-threshold method",
    Journal of Instrumentation, Vol. 17, pp. C01006. (2022)
    doi:10.1088/1748-0221/17/01/C01006

  7. Riichiro Nakamura, Takeshi Fujiwara, Yusuke Koba, Yuki Mitsuya, Weishan Chang, Ryuta Tatsumoto, Shuto Kawahara, Keisuke Maehata,
    "Thin cathode glass gas electron multiplier detector for carbon beam dose imaging",
    Journal of Nuclear Science and Technology, Vol. 59, pp. 1-8. (2021)
    doi.org/10.1080/00223131.2021.1894254

  8. Takeshi Fujiwara, Yusuke Koba, Yuki Mitsuya, Riichiro Nakamura, Ryuta Tatsumoto, Shuto Kawahara, Keisuke Maehata, Hidetoshi Yamaguchi, Weishan Chang, Naruhiro Matsufuji, Hiroyuki Takahashi,
    "Development and characterization of optical readout well-type glass gas electron multiplier for dose imaging in clinical carbon beams",
    European Journal of Medical Physics - Physica Medica, Vol. 82, pp. 72-78. (2021)
    doi:10.1016/j.ejmp.2021.01.068

  9. T. Fujiwara,I. Kawamura, Y. Fujimoto, G. Okada, and M. Koshimizu,
    "Tailor-made 3D dosimeter using 3D printing technology",
    Radiation measurements, Vol. 135, pp. 106376. (2020)
    doi.org/10.1016/j.radmeas.2020.106376

  10. B.E. O'Rourke, T. Fujiwara, K. Furukawa, M. Furusaka, N. Hayashizaki, K. Kino, R. Kuroda, K. Michishio, T. Muroga, K. Nigorikawa, T. Obina, H. Ogawa, N. Oshima, D. Satoh, N. Sei, T. Shishido, R. Suzuki, M. Tanaka, Y. Tomota, H. Toyokawa, and A. Watazu,
    “Design and construction of an electron accelerator for a pulsed neutron facility at AIST,
    Nucl. Instrum. Methods Phys. Res. B, Vol. 464, pp. 41-44. (2020)
    doi:10.1016/j.nimb.2019.11.041.

  11. T. Fujiwara, Y. Mitsuya, T. Fushie, T. Aoki,
    "Demonstration of Soft X-ray 3D Scanning and Modeling with a Glass Gas Electron Multiplier",
    J. Inst., Vol. 14, pp. P11022–P110022. (2019)
    doi.org/10.1088/1748-0221/14/11/P11022

  12. K. Kino, T. Fujiwara, M. Furusaka, N. Hayashizaki, R. Kuroda, K. Michishio, T. Muroga, H. Ogawa, B. E.O’Rourke, N. Oshima, D. Satoh, N. Sei, T. Shishido, R. Suzuki, M. Tanaka, H. Toyokawa, A. Watazu,
    “Design of a compact electron accelerator-driven pulsed neutron facility at AIST,
    Nucl. Instrum. Methods Phys. Res. A, Vol. 927, pp. 407-418. (2019)
    doi.org/10.1016/j.nima.2019.02.062

  13. Y. Mitsuya, T. Fujiwara, H. Takahashi, M. Uesaka,
    “X-ray imaging demonstration of glass GEM detector with dynamic time-over-threshold-based readout,
    J. Inst., Vol. 13, pp. P12023–P12023. (2018)
    doi:10.1088/1748-0221/13/12/P12023.

  14. T. Fujiwara, Y. Mitsuya, and H. Takahashi,
    “Radiation imaging with glass gas electron multipliers (G−GEMs),”
    Nucl. Instrum. Methods Phys. Res. A, Vol. 878, pp. 40-49, (2018)
    https://doi.org/10.1016/j.nima.2017.09.010

  15. Y. Mitsuya, H. Miyoshi, T. Fujiwara, M. Uesaka, H. Takahashi
    “Gaseous flat-panel detector with glass gas electron multiplier coupled with micro-photodiode array
    Nucl. Instrum. Methods Phys. Res. A, Vol. 873, pp. 56-58, (2017)
    https://doi.org/10.1016/j.nima.2017.05.040

  16. T. Fujiwara, Y. Mitsuya, T. Fushie, K. Murata, A. Kawamura, A. Koishikawa, H. Toyokawa, and H. Takahashi,
    “Gas scintillation glass GEM detector for high-resolution X-ray imaging and CT,”
    Nucl. Instrum. Methods Phys. Res. A, vol. 850, pp. 7–11, (2017)
    https://doi.org/10.1016/j.nima.2017.01.013

  17. T. Fujiwara, Y. Mitsuya, and H. Toyokawa,
    “Fine-pitch glass GEM for high-resolution X-ray imaging,”
    J. Inst., vol. 11, no. 12, pp. C12050–C12050, Dec. 2016.
    https://doi.org/10.1088/1748-0221/11/12/C12050

  18. T. Fujiwara, U. Bautista, Y. Mitsuya, H. Takahashi, N. L. Yamada, Y. Otake, A. Taketani, M. Uesaka, and H. Toyokawa,
    “Microstructured boron foil scintillating G-GEM detector for neutron imaging,”
    Nucl. Instrum. Methods Phys. Res. A, vol. 838, pp. 124–128, (2016)
    DOI: 10.1016/j.nima.2016.09.005

  19. T. Fujiwara, Y. Mitsuya, T. Yanagida, T. Saito, H. Toyokawa, H. Takahashi,
    High-photon-yield scintillation detector with Ar/CF 4and glass gas electron multiplier,
    Jpn. J. Appl. Phys. 55 (2016) 106401. (2016)
    doi:10.7567/JJAP.55.106401.

  20. Y. Tian, K. Shimazoe, X. Yan, O. Ueda, T. Ishikura, T. Fujiwara, M. Uesaka, M. Ohno, H. Tomita, Y. Yoshihara, H. Takahashi,
    High energy X-ray photon counting imaging using linear accelerator and silicon strip detectors,
    Nucl. Instrum. Methods Phys. Res. A 830 (2016) 251–255. (2015)
    doi:10.1016/j.nima.2016.05.108.

  21. Y. Mitsuya, T. Fujiwara, T. Fushie, T. Maekawa, H. Takahashi,
    Development of large-area glass GEM,
    Nucl. Instrum. Methods Phys. Res. A (2015) 156–159. (2015)
    doi:10.1016/j.nima.2015.05.039.

  22. X. Xiaosong, Y. TIAN, K. Shimazoe, T. Fujiwara, H. Takahashi,
    Development of X-ray/Gamma-Ray Imaging System Based on Hydrogenated Amorphous Silicon/Crystalline Silicon Heterojunction Strip Detector,
    Radioisotopes. 64 (2015) 729–735.
    doi:10.3769/radioisotopes.64.729.

  23. M. Uesaka, K. Dobashi, T. Fujiwara, C. Pei, W. Wu, J. Kusano, et al.,
    On-site nondestructive inspection by upgraded portable 950 keV/3.95 MeV X-band linac x-ray sources,
    J. Phys. B: at. Mol. Opt. Phys. 47 (2014) 234008.
    doi:10.1088/0953-4075/47/23/234008.

  24. T. Fujiwara, Y. Mitsuya, H. Takahashi, T. Fushie, S. Kishimito, B. Guerard, M. Uesaka,
    The performance of Glass GEM,
    J. Inst. 9 (2014) P11007–P11007.
    doi:10.1088/1748-0221/9/11/P11007.

  25. Y. Mitsuya, T. Fujiwara, H. Takahashi, T. Fushie,
    A new glass GEM with a single-sided guard-ring structure,
    J Nucl Sci Technol. 51 (2014) 639–644.
    doi:10.1080/00223131.2014.884954.

  26. T. Fujiwara, S. Tanaka, Y. Mitsuya, H. Takahashi, K. Tagi, J. Kusano, et al.,
    Development of a scintillating G-GEM detector for a 6-MeV X-band Linac for medical applications,
    J. Inst. 8 (2013) C12020–C12020.
    doi:10.1088/1748-0221/8/12/C12020.

  27. W. Wu, H. Zhu, M. Jin, K. Dobashi, T. Fujiwara, M. Uesaka, et al.,
    Partial CT and Structural Analysis with 950 Kev/3.95 Mev X-Band Linac X-Ray Sources,
    E-Journal of Advanced Maintenance. 2 (2013) 121–127.

  28. M. Uesaka, M. Jin, W. Wu, K. Dobashi, T. Fujiwara, J. Kusano, et al.,
    Commissioning of portable 950 keV/3.95MeV X-band linac X-ray sources for on-site transmission testing,
    E-Journal of Advanced Maintenance. 5 (2013) pp.93–100

  29. Y. Mitsuya, T. Fujiwara, H. Takahashi,
    Characteristics of a glass gem with a guard-ring structure,
    J. Inst. 8 (2013) C11018–C11018.
    doi:10.1088/1748-0221/8/11/C11018.

  30. H. Takahashi, Y. Mitsuya, T. Fujiwara, T. Fushie,
    Development of a glass GEM,
    Nucl. Instrum. Methods Phys. Res. A 724 (2013) 1–4.
    doi:10.1016/j.nima.2013.04.089.

  31. T. Fujiwara, H. Takahashi, T. Yanagida, K. Kamada, K. Fukuda, N. Kawaguchi, N. L. Yamada, M. Furusaka, K. Watanabe, Y. Fujimoto, M. Uesaka.,
    Study on Ce:LiCAF scintillator for 3He alternative detector,
    Neutron News. 23 (2012) 31–34.
    doi:10.1080/10448632.2012.725335.

  32. T. Fujiwara, T. Saito, Y. Muroya, H. Sawahata, Y. Yamashita, S. Nagasaki, K. Okamoto, H. Takahashi, M. Uesaka, Y. Katsumura, S. Tanaka,
    Isotopic ratio and vertical distribution of radionuclides in soil affected by the accident of Fukushima Dai-ichi nuclear power plants,
    Journal of Environmental Radioactivity. 113 (2012) 37–44.
    doi:10.1016/j.jenvrad.2012.04.007.

  33. Y. Miyake, H. Matsuzaki, T. Fujiwara, T. Saito, T. Yamagata, M. Honda, et al.,
    Isotopic ratio of radioactive iodine (129 I/131 I) released from Fukushima Daiichi NPP accident,
    Geochemical Journal. 46 (2012) 327 to 333.

  34. N.L. Yamada, N. Torikai, K. Mitamura, H. Sagehashi, S. Sato, H. Seto, et al.,
    Design and performance of horizontal-type neutron reflectometer SOFIA at J-PARC/MLF,
    Eur. Phys. J. Plus. 126 (2011) 108–13.
    doi:10.1140/epjp/i2011-11108-7.

  35. M. Uesaka, T. Natsui, K. Lee, K. Dobashi, T. Yamamoto, T. Fujiwara, H. Zhu, K. Demachi, E. Tanabe, M. Yamamoto, N. Nakamura, J. Kusano, T. Higo, S. Fukuda, M. Yoshida, S. Matsumoto,
    950keV, 3.95MeV and 6MeV X-band linacs for nondestructive evaluation and medicine,
    Nucl. Instrum. Methods Phys. Res. A 657 (2011) 82–87.
    doi:10.1016/j.nima.2011.07.026.

  36. T. Orita, H. Takahashi, K. Shimazoe, T. Fujiwara, S. Boxuan,
    A new pulse width signal processing with delay-line and non-linear circuit (for ToT),
    Nucl. Instrum. Methods Phys. Res. A 648 (2011) S24–S27.
    doi:10.1016/j.nima.2011.01.023.

  37. H. Takahashi, K. Fujita, T. Fujiwara, H. Niko, B. Guérard, F. Fraga,
    The transparent microstrip gas counter,
    Nucl. Instrum. Methods Phys. Res. A 623 (2010) 123–125.
    doi:10.1016/j.nima.2010.02.169.

  38. T. Fujiwara, H. Takahashi,
    Multi-level time-over-threshold method for energy resolving multi-channel systems,
    IEEE Transactions on Nuclear Science. 57 (2010) 2545–2548.
    doi:10.1109/TNS.2010.2061236.



Research
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