研究者データベース

平賀 富士夫(ヒラガ フジオ)
工学研究院 応用量子科学部門 物質量子工学
助教

基本情報

所属

  • 工学研究院 応用量子科学部門 物質量子工学

職名

  • 助教

学位

  • 博士(工学)(北海道大学)

J-Global ID

研究キーワード

  • ホウ素中性子捕捉療法   加速器科学   中性子工学   放射線工学   

研究分野

  • エネルギー / 原子力工学

研究活動情報

論文

  • Synergistic effects of fast-neutron dose per epithermal neutron and 10B concentration on relative-biological-effectiveness dose for accelerator-based boron neutron capture therapy
    F. HIRAGA, T. Ooie
    Applied Radiation and Isotopes 144 1 - 4 2019年02月 [査読有り][通常論文]
  • Monte Carlo simulation-based design for an electron-linear-accelerator-driven subcritical neutron multiplier for boron neutron capture therapy
    F. HIRAGA
    Applied Radiation and Isotopes 140 121 - 125 2018年10月 [査読有り][通常論文]
  • Measurements of neutronic characteristics of rectangular and cylindrical coupled hydrogen moderators
    Kai T, Kamiyama T, Hiraga F, Ooi M, Hirota K, Kiyanagi Y
    JOURNAL OF NUCLEAR SCIENCE AND TECHNOLOGY 55 3 283 - 289 2017年03月 [査読有り][通常論文]
  • Hidenori Iwashita, Hirotaka Sato, Kaoru Arai, Takashi Kotanigawa, Koichi Kino, Takashi Kamiyama, Fujio Hiraga, Katsutoshi Koda, Michihiro Furusaka, Yoshiaki Kiyanagi
    IEEE TRANSACTIONS ON NUCLEAR SCIENCE 64 1 689 - 696 2017年01月 [査読有り][通常論文]
     
    The frequency of neutron-induced soft errors is increasing as devices become more integrated and miniaturized. Therefore, it has become more important recently to check reliability of a recovery system from the soft errors in network systems. For accelerated test, first we have examined possibility of the acceleration tests at a compact accelerator-driven neutron source, which is easy to adjust for soft-error tests and which also has low experimental costs. We selected the electron acceleratordriven neutron source at Hokkaido University as the compact accelerator-driven neutron source. We prepared a new targetreflector assembly composed of heavy metals to provide the fast neutrons, and conducted neutron-induced soft-error experiments on network equipments. As a result, we found that an accelerated rate of soft errors was about 106 times compared with that of the natural environment. We also investigated network equipment soft-error tolerance, fault detection and backup switching processes. Performing such testing before network equipment is actually deployed is critical for development of future network systems. Hence, the compact accelerator-based neutron source is a very useful tool.
  • R. Inoue, F. Hiraga, Y. Kiyanagi
    APPLIED RADIATION AND ISOTOPES 88 225 - 228 2014年06月 [査読有り][通常論文]
     
    An accelerator based BNCT has been desired because of its therapeutic convenience. However, optimal design of a neutron moderator system is still one of the issues. Therefore, detailed studies on materials consisting of the moderator system are necessary to obtain the optimal condition. In this study, the epithermal neutron flux and the RBE dose have been calculated as the indicators to look for optimal materials for the filter and the moderator. As a result, it was found that a combination of MgF2 moderator with Fe filter gave best performance, and the moderator system gave a dose ratio greater than 3 and an epithermal neutron flux over 1.0 x 10(9) cm(-2) s(-1). (C) 2013 Elsevier Ltd. All rights reserved.
  • K. Kino, F. Hiraga, T. Kamiyama, Y. Kiyanagi, H. Harada, K. Y. Hara, K. Hirose, A. Kimura, F. Kitatani, S. Nakamura, M. Igashira, T. Katabuchi, M. Mizumoto, J. Hori
    NUCLEAR DATA SHEETS 119 140 - 142 2014年05月 [査読有り][通常論文]
     
    Primary gamma rays from the neutron capture resonances for Tc-99 were measured at the J-PARC/ANNRI. The transition pattern from the first resonance is similar to that from the capture reaction of thermal neutrons. On the other hand, transition patterns from the higher energy resonances are completely different, and there is no clear dependence on the spin-parities of the resonances.
  • K. Kino, M. Furusaka, F. Hiraga, T. Kamiyama, Y. Kiyanagi, K. Furutaka, S. Goko, K. Y. Hara, H. Harada, M. Harada, K. Hirose, T. Kai, A. Kimura, T. Kin, F. Kitatani, M. Koizumi, F. Maekawa, S. Meigo, S. Nakamura, M. Ooi, M. Ohta, M. Oshima, Y. Toh, M. Igashira, T. Katabuchi, M. Mizumoto, J. Hori
    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT 736 66 - 74 2014年02月 [査読有り][通常論文]
     
    We studied the energy resolution of the pulsed neutron beam of the Accurate Neutron-Nucleus Reaction Measurement Instrument (ANNRI) at the Japan Proton Accelerator Research Complex/Materials and Life Science Experimental Facility (J-PARC/MLF). A simulation in the energy region from 0.7 meV to 1 MeV was performed and measurements were made at thermal (0.76-62 meV) and epithermal energies (4.8-410 eV). The neutron energy resolution of ANNRI determined by the time technique depends on the Lime structure of the neutron pulse. We obtained the neutron energy resolution as a function of the neutron energy by the simulation in the two operation modes of the neutron source: double- and single bunch modes in double bunch mode, the resolution deteriorates above about 10 eV because the time structure of the neutron pulse splits into two peaks. The time structures at 13 energy points from measurements in the thermal energy region agree with those of the simulation. In the epithermal energy region, the time structures at 17 energy points were obtained from measurements and agree with those of the simulation. The FWHM values of the time structures by the simulation and measurements were found to be almost consistent. In the single-bunch mode, the energy resolution is better than about 1% between 1 meV and 10 keV at a neutron source operation of 17.5 kW. These results confirm the energy resolution of the pulsed neutron beam produced by the ANNRI beamline. (C) 2013 Elsevier B.V. All rights reserved.
  • Neutronic Design on a Small Accelerator-Based 7Li (p, n) Neutron Source for Neutron Scattering Experiments
    Fujio Hiraga, Takanori Okazaki, Yoshiaki Kiyanagi
    Physics Procedia 26 97 - 107 2012年 [査読有り][通常論文]
  • Study on reduction of gamma-ray noise for a pixel-type position-sensitive Li-glass neutron detector
    Fujio Hiraga, Koichi Kino, Hiroyuki Hasemi, Yoshiaki Kiyanagi, Masayuki Igashira
    Physics Procedia 26 238 - 242 2012年 [査読有り][通常論文]
  • Simulation study of a pulsed neutron focusing using a pulsed electromagnetic lens coupled with a permanent magnet
    H. Iwashita, H. Iwasa, F. Hiraga
    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT 600 1 129 - 131 2009年02月 [査読有り][通常論文]
  • Design of a Collimator System of a Neutron Beam Line for Neutron-Nucleus Reaction Measurements
    K. Kino, F. Hiraga
    Nuclear Technology 168 317 - 321 2009年 [査読有り][通常論文]

作品等

  • 日本原子力学会2008年秋の大会
    2008年

その他活動・業績

  • Y. Kiyanagi, K. Kino, M. Furusaka, F. Hiraga, T. Kamiyama, K. Kato, M. Igashira, T. Katabuchi, M. Mizumoto, M. Oshima, H. Harada, J. Katakura, K. Furutaka, S. Goko, A. Kimura, T. Kin, F. Kitatani, M. Koizumi, S. Nakamura, M. Ohta, Y. Toh, T. Ohtsuki, K. Hirose, T. Fujii, J. Hori, K. Takamiya, S. Fukutani, M. Shibata, K. Yamada, H. Utsunomiya JOURNAL OF THE KOREAN PHYSICAL SOCIETY 59 (2) 1781 -1784 2011年08月 [査読無し][通常論文]
     
    A project on the comprehensive nuclear data research for the development of the advanced reactor systems had been executed successfully by eight organizations from 2005 to 2009. In this project, we constructed a pulsed neutron beamline that was aimed to obtain neutron capture cross-sections of long-lived fission products and minor actinides accurately. The energy spectra, spatial distributions, and pulses of the beam were studied by measurements and simulation calculations, and they were found to be consistent with those of the beamline design. In this paper, we present the overview of the project and the properties of the neutron beam provided by this beam line.
  • K. Kino, M. Furusaka, F. Hiraga, T. Kamiyama, Y. Kiyanagi, K. Furutaka, S. Goko, H. Harada, M. Harada, T. Kai, A. Kimura, T. Kin, F. Kitatani, M. Koizumi, F. Maekawa, S. Meigo, S. Nakamura, M. Ooi, M. Ohta, M. Oshima, Y. Toh, M. Igashira, T. Katabuchi, M. Mizumoto NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT 626 58 -66 2011年01月 [査読無し][通常論文]
     
    We measured the energy spectra and spatial distributions of the neutron beam of Accurate Neutron-Nucleus Reaction Measurement Instrument (ANNRI) at the Japan Proton Accelerator Research Complex/Materials and Life Science Experimental Facility (J-PARC/MLF). Our research team designed and built ANNRI to measure nuclear data with high precision. The measurements of the neutron beam were performed on three types of beams provided by ANNRI in the neutron energy range from 1.5 meV to 10 keV. The energy spectra show a typical feature of para-hydrogen moderator, and the absolute intensities almost agree with predictions based on both a simulation calculation of the Japan Spallation Neutron Source (JSNS) and a neutron transmission calculation of the beamline. The available neutron intensities at 21.5 m are 7.5 x 10(5), 1.6 x 10(4), and 1.1 x 10(5) n/cm(2)/s in the energy ranges 1.5-25 meV, 0.9-1.1 eV, and 0.9-1.1 keV, respectively, under the 17.5 kW JSNS operation. The measured spatial distributions of the beams formed by three different collimators are consistent with those expected from the collimator-system design of the beamline. The beam sizes in FWHM are about 29, 14, and 11 mm for the three different beam collimators. The edges of the spatial distributions are relatively sharp, enabling us to measure the nuclear data successfully. (C) 2010 Elsevier B.V. All rights reserved.
  • NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT Volume: 600 (Issue: 1) 167 -169 2009年 [査読無し][通常論文]
  • NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT Volume: 600 (Issue: 1) 129 -131 2009年 [査読無し][通常論文]
  • Design of a Collimator System of a Neutron Beam Line for Neutron-Nucleus Reaction Measurements
    Nuclear Technology 168 317 -321 2009年 [査読無し][通常論文]
  • Design of a Collimator System of a Neutron Beam Line for Neutron-Nucleus Reaction Measurements
    Nuclear Technology Vol.168 317 -321 2009年 [査読無し][通常論文]
  • Pulsed Neutron Spectroscopic Imaging for Investigating Microstructure of Material
    Neutron Radiography: Proceedings of the Eighth World Conference 363 -368 2008年 [査読無し][通常論文]
  • Fujio Hiraga JOURNAL OF NUCLEAR SCIENCE AND TECHNOLOGY 43 (7) 750 -764 2006年07月 [査読無し][通常論文]
     
    In a thermal reactor with moderators at different temperatures, a difference arises in the average speeds of thermalized neutrons between the high temperature part and the low temperature part of the moderator, and the non-uniformity of the average speed of thermalized neutrons may effect changes in the spatial dependence of the thermal neutron flux in a core. To investigate the thermal neutron flux in the case the average speed of thermalized neutrons is dependent on the position within a core, time-dependent two-group diffusion equations were applied. The influence of a non-uniform moderator temperature on the core power distribution was investigated about a graphite-moderated subcritical reactor driven by periodic injections of pulsed fast neutrons. The cylindrical reactor model by which a high temperature part of a core that has a spallation target at the center is enclosed by a low temperature part of a core was used. Changes in the core power distribution were calculated. It turned out that the momentary increases of a thermal power density caused by periodic injections of pulsed fast neutrons increase as the difference in the average speeds of thermalized neutrons in the high temperature part and the low temperature part of a core increases.
  • Application of spectrometric radiography using pulsed neutron time-of-flight method for material characterization
    Key Engineering Materials Volumes 321-323 1663 -1666 2006年 [査読無し][通常論文]
  • Y.Kiyanagi, K.Mizukami, T.Kamiyama, F.Hiraga, H.Iwasa, Images obtained by neutron transmission measurement using time-of-flight method, Nuclear Instruments and Methods in Physics Research A 542 (2005) 316-319*
    2005年 [査読無し][通常論文]
  • Y.Kiyanagi, N.Sakamoto, H.Iwasa, T.Kamiyama, F.Hiraga, S.Sato, H.Sagehashi, T.Ino, M.Furusaka, J.Suzuki, A.Gorin, I.Manuilov, A.Ryazantsev, K.Kuroda, K.Sakai, F.Tokanai, H.Miyasaka, T.Adachi, T.Oku, K.Ikeda, S.Suzuki, K.Morimoto, H.M.Shimizu, Some expe・・・
    2005年 [査読無し][通常論文]
     
    Y.Kiyanagi, N.Sakamoto, H.Iwasa, T.Kamiyama, F.Hiraga, S.Sato, H.Sagehashi, T.Ino, M.Furusaka, J.Suzuki, A.Gorin, I.Manuilov, A.Ryazantsev, K.Kuroda, K.Sakai, F.Tokanai, H.Miyasaka, T.Adachi, T.Oku, K.Ikeda, S.Suzuki, K.Morimoto, H.M.Shimizu, Some experimental studies on time-of-flight radiography using a pulsed neutron source, IEEE Transactions on nuclear science, vol.52, no.1, february (2005) 371-374*
  • Kiyanagi,Y., Kamiyama,T., Iwasa,H. and Hiraga,F. : "Characteristics of a New Type Neutron Radiography Using Time-of-Flight Method", Key Engineering Materials, Volumes 270-273 :1371-1375 (2004)*
    2004年 [査読無し][通常論文]
  • Kiyanagi,Y., Tatsumi,T., Iwasa,H., Hiraga,F. and Kamiyama,T.: "Reflection and transmission property of a focusing device composed of multi-capillary fibers", Physica B: Condensed Matter, Volume 350, Issues 1-3, Supplement 1, 15 July: E691-E693 (2004)*
    2004年 [査読無し][通常論文]
  • Kiyanagi,Y., Koike,G., Iwasa,H., Hiarga,F. and Kamiyama,T. : "Measurements and simulations of neutron transport characteristics of multi-capillary fibers as a function of neutron wavelength ", Nuclear Instruments and Methods in Physics Research Sectio・・・
    2004年 [査読無し][通常論文]
     
    Kiyanagi,Y., Koike,G., Iwasa,H., Hiarga,F. and Kamiyama,T. : "Measurements and simulations of neutron transport characteristics of multi-capillary fibers as a function of neutron wavelength ", Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Volume 529, Issues 1-3, 21 August:87-89 (2004)*
  • Jun-ichi Suzuki, Takayuki Oku, Tomohiro Adachi, Hirohiko M. Shimizu, Yoshiaki Kiyanagi, Takashi Kamiyama, Fujio Hiraga, Hirokatsu Iwasa, Koichi Sato and Michihiro Furusaka: "Development of a magnetic focusing device for pulsed neutrons", Nuclear Instru・・・
    2004年 [査読無し][通常論文]
     
    Jun-ichi Suzuki, Takayuki Oku, Tomohiro Adachi, Hirohiko M. Shimizu, Yoshiaki Kiyanagi, Takashi Kamiyama, Fujio Hiraga, Hirokatsu Iwasa, Koichi Sato and Michihiro Furusaka: "Development of a magnetic focusing device for pulsed neutrons", Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Volume 529, Issues 1-3, 21 August:120-124 (2004)*
  • Mizukami,K., Sato,S., Sagehashi,H., Ohnuma,S., Ooi,M., Iwasa,H., Hiraga,F., Kamiyama,T. and Kiyanagi,Y. : "Measurements of performance of a pixel-type two-dimensional position sensitive Li-glass neutron detector", Nuclear Instruments and Methods in Ph・・・
    2004年 [査読無し][通常論文]
     
    Mizukami,K., Sato,S., Sagehashi,H., Ohnuma,S., Ooi,M., Iwasa,H., Hiraga,F., Kamiyama,T. and Kiyanagi,Y. : "Measurements of performance of a pixel-type two-dimensional position sensitive Li-glass neutron detector", Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Volume 529, Issues 1-3, 21 August:310-312 (2004)*
  • F. HIRAGA:"The Dependence of Instantaneous Power Peaking on Multiplication Factor and Generation Time in Accelerator Driven Subcritical Cores", J. Nucl. Sci. Technol., 38(5):352-360(2001)*
    2001年 [査読無し][通常論文]
  • Hiraga,F.:"Effects of Spatial Harmonics on Power Distribution in Accelerator Driven Subcritical Cores", J. Nucl. Sci. Technol., 36[10]:888-901(1999)*
    1999年 [査読無し][通常論文]
  • Kiyanagi, Y., Ogawa, Y., Kitazaki, K., Hiraga, F., Kamiyama, T. and Furusaka. M.: "Neutronic Studies on a Target-moderator-reflector Assembly for the JHF N-arena Spallation Neutron Source in Japan", Proc. 14th International Collaboration on Advanced Ne・・・
    1998年 [査読無し][通常論文]
     
    Kiyanagi, Y., Ogawa, Y., Kitazaki, K., Hiraga, F., Kamiyama, T. and Furusaka. M.: "Neutronic Studies on a Target-moderator-reflector Assembly for the JHF N-arena Spallation Neutron Source in Japan", Proc. 14th International Collaboration on Advanced Neutron Sources, Illinois, pp.599-604(1998)
  • Hiraga, F. : "Effects of Spatial Harmonics on Thermal Neutron Spectra Measured by Time-of-Flight Method", J. Nucl. Sci. Technol., 34 : 723-733 (1997)*
    1997年 [査読無し][通常論文]

共同研究・競争的資金等の研究課題

  • ホウ素中性子捕捉療法用の熱外中性子生成・照射システムの開発
    新エネルギー技術研究開発費
    研究期間 : 2010年
  • 小型陽子加速器を用いた冷中性子源の開発
    研究期間 : 2007年

教育活動情報

主要な担当授業

  • 加速器科学特論
    開講年度 : 2018年
    課程区分 : 修士課程
    開講学部 : 工学院
  • Accelerator Science I(加速器科学-1E)
    開講年度 : 2018年
    課程区分 : 修士課程
    開講学部 : 工学院
  • 加速器科学特論
    開講年度 : 2018年
    課程区分 : 博士後期課程
    開講学部 : 工学院
  • Accelerator Science II(加速器科学-2E)
    開講年度 : 2018年
    課程区分 : 修士課程
    開講学部 : 工学院
  • 医理工加速器科学
    開講年度 : 2018年
    課程区分 : 修士課程
    開講学部 : 医理工学院
    キーワード : 加速器の歴史、加速器科学、加速器応用、放射光、中性子科学、陽子線治療、ホウ素中性子捕捉療法、γ線、中性子、放射線遮蔽
  • 加速器科学特論-I
    開講年度 : 2018年
    課程区分 : 修士課程
    開講学部 : 工学院
    キーワード : 加速器の歴史、加速器科学、加速器応用、放射光、中性子科学、γ線、中性子
  • 加速器科学特論-II
    開講年度 : 2018年
    課程区分 : 修士課程
    開講学部 : 工学院
    キーワード : 加速器、陽子線治療、ホウ素中性子捕捉療法、γ線、中性子、放射線遮蔽
  • Accelerator Science I(加速器科学-1E)
    開講年度 : 2018年
    課程区分 : 博士後期課程
    開講学部 : 工学院
  • Accelerator Science II(加速器科学-2E)
    開講年度 : 2018年
    課程区分 : 博士後期課程
    開講学部 : 工学院
  • 加速器科学特論-I
    開講年度 : 2018年
    課程区分 : 博士後期課程
    開講学部 : 工学院
    キーワード : 加速器の歴史、加速器科学、加速器応用、放射光、中性子科学、γ線、中性子
  • 加速器科学特論-II
    開講年度 : 2018年
    課程区分 : 博士後期課程
    開講学部 : 工学院
    キーワード : 加速器、陽子線治療、ホウ素中性子捕捉療法、γ線、中性子、放射線遮蔽
  • 一般教育演習(フレッシュマンセミナー)
    開講年度 : 2018年
    課程区分 : 学士課程
    開講学部 : 全学教育
    キーワード : 光電効果、γ線スペクトル測定、放射性壊変系列、ロボット、マイコン、制御
  • 一般教育演習(フレッシュマンセミナー)
    開講年度 : 2018年
    課程区分 : 学士課程
    開講学部 : 全学教育
    キーワード : 量子ビーム、プラズマ、触媒、ナノ材料


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