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27 results on '"Hiraga, F."'

5. Measurement of energy spectra and spatial distributions of neutron beams provided by the ANNRI beamline for capture cross-section measurements at the J-PARC/MLF

Author

Kino, K., Furusaka, M., Hiraga, F., Kamiyama, T., Kiyanagi, Y., Furutaka, K., Goko, S., Harada, H., Harada, M., Kai, T., Kimura, A., Kin, T., Kitatani, F., Koizumi, M., Maekawa, F., Meigo, S., Nakamura, S., Ooi, M., Ohta, M., Oshima, M., Toh, Y., Igashira, M., Katabuchi, T., and Mizumoto, M.

Published
2011
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16. Energy resolution of pulsed neutron beam provided by the ANNRI beamline at the J-PARC/MLF

Author

Kino, K., Furusaka, M., Hiraga, F., Kamiyama, T., Kiyanagi, Y., Furutaka, K., Goko, S., Hara, K. Y., Harada, H., Harada, M., Hirose, K., Kai, T., Kimura, A., Kin, T., Kitatani, F., Koizumi, M., Maekawa, F., Meigo, S., Nakamura, S., Ooi, M., Ohta, M., Oshima, M., Toh, Y., Igashira, M., Katabuchi, T., Mizumoto, M., Hori, J., Kino, K., Furusaka, M., Hiraga, F., Kamiyama, T., Kiyanagi, Y., Furutaka, K., Goko, S., Hara, K. Y., Harada, H., Harada, M., Hirose, K., Kai, T., Kimura, A., Kin, T., Kitatani, F., Koizumi, M., Maekawa, F., Meigo, S., Nakamura, S., Ooi, M., Ohta, M., Oshima, M., Toh, Y., Igashira, M., Katabuchi, T., Mizumoto, M., and Hori, J.

Abstract

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.

Published
2014

17. Energy resolution of pulsed neutron beam provided by the ANNRI beamline at the J-PARC/MLF

Author

Kino, K., primary, Furusaka, M., additional, Hiraga, F., additional, Kamiyama, T., additional, Kiyanagi, Y., additional, Furutaka, K., additional, Goko, S., additional, Hara, K.Y., additional, Harada, H., additional, Harada, M., additional, Hirose, K., additional, Kai, T., additional, Kimura, A., additional, Kin, T., additional, Kitatani, F., additional, Koizumi, M., additional, Maekawa, F., additional, Meigo, S., additional, Nakamura, S., additional, Ooi, M., additional, Ohta, M., additional, Oshima, M., additional, Toh, Y., additional, Igashira, M., additional, Katabuchi, T., additional, Mizumoto, M., additional, and Hori, J., additional

Published
2014
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18. Some experimental studies on time-of-flight radiography using a pulsed neutron source

Author

Kiyanagi, Y., Sakamoto, N., Iwasa, H., Kamiyama, T., Hiraga, F., Sato, S., Sagehashi, H., Ino, T., Furusaka, M., Suzuki, J., Gorin, A., Manuilov, I., Ryazantsev, A., Kuroda, K., Sakai, K., Tokanai, F., Miyasaka, H., Adachi, T., Oku, T., Ikeda, K., Suzuki, S., Morimoto, K., Shimizu, H.M., Kiyanagi, Y., Sakamoto, N., Iwasa, H., Kamiyama, T., Hiraga, F., Sato, S., Sagehashi, H., Ino, T., Furusaka, M., Suzuki, J., Gorin, A., Manuilov, I., Ryazantsev, A., Kuroda, K., Sakai, K., Tokanai, F., Miyasaka, H., Adachi, T., Oku, T., Ikeda, K., Suzuki, S., Morimoto, K., and Shimizu, H.M.

Abstract

We are developing a fiber type two-dimentional (2-D) position-sensitive detector having a spatial resolution less than 0.5 mm in order to use it in the time-of-flight (TOF) measurements. The detector performance was examined, and some experiments on the TOF radiography were performed using this detector. The results indicated that the detector could be applied successfully to the TOF measurement and that the TOF radiography was very useful since it gave more informative data than those obtained by the conventional radiography using a broad energy band.

Published
2005

19. Study of Neutron Capture Reactions Using the 4?ð Ge Spectrometer

Author

Harada, H., primary, Goko, S., additional, Kimura, A., additional, Ohta, M., additional, Oshima, M., additional, Kitatani, F., additional, Toh, Y., additional, Furutaka, K., additional, Kin, T., additional, Koizumi, M., additional, Nakamura, S., additional, Igashira, M., additional, Katabuchi, T., additional, Mzumoto, M., additional, Ohsaki, T., additional, Hori, J., additional, Fujii, T., additional, Takamiya, K., additional, Goto, J., additional, Kiyanagi, Y., additional, Kino, K., additional, Furusaka, M., additional, Hiraga, F., additional, and Kamiyama, T., additional

Published
2011
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20. The 'Study on Nuclear Data by Using a High Intensity Pulsed Neutron Source for Advanced Nuclear System' Nuclear Data Project and the Characteristics of the Neutron Beam Line for the Capture Cross Section Experiments at J-PARC

Author

Kino, K., primary, Kiyanagi, Y., additional, Furusaka, M., additional, Hiraga, F., additional, Kamiyama, T., additional, Kato, K., additional, Igashira, M., additional, Katabuchi, T., additional, Mizumoto, M., additional, Oshima, M., additional, Harada, H., additional, Katakura, J., additional, Furutaka, K., additional, Goko, S., additional, Kimura, A., additional, Kin, T., additional, Kitatani, F., additional, Koizumi, M., additional, Nakamura, S., additional, Ohta, M., additional, Toh, Y., additional, Ohtsuki, T., additional, Hirose, K., additional, Fujii, T., additional, Hori, J., additional, Takamiya, K., additional, Fukutani, S., additional, Shibata, M., additional, Yamada, K., additional, and Utsunomiya, H., additional

Published
2011
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21. Some experimental studies on time-of-flight radiography using a pulsed neutron source

Author

Kiyanagi, Y., primary, Sakamoto, N., additional, Iwasa, H., additional, Kamiyama, T., additional, Hiraga, F., additional, Sato, S., additional, Sagehashi, H., additional, Ino, T., additional, Furusaka, M., additional, Suzuki, J., additional, Gorin, A., additional, Manuilov, I., additional, Ryazantsev, A., additional, Kuroda, K., additional, Sakai, K., additional, Tokanai, F., additional, Miyasaka, H., additional, Adachi, T., additional, Oku, T., additional, Ikeda, K., additional, Suzuki, S., additional, Morimoto, K., additional, and Shimizu, H.M., additional

Published
2005
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27. Synergistic effects of fast-neutron dose per epithermal neutron and 10 B concentration on relative-biological-effectiveness dose for accelerator-based boron neutron capture therapy.

Author

Hiraga F and Ooie T

Subjects
Humans, Monte Carlo Method, Neoplasms radiotherapy, Phantoms, Imaging, Boron Neutron Capture Therapy methods, Fast Neutrons, Radiotherapy Dosage, Relative Biological Effectiveness
Abstract

The efficacy of accelerator-based boron neutron capture therapy was examined through relative-biological-effectiveness dose calculations with the fast-neutron dose per epithermal neutron (FNR) and the 10 B concentration as parameters. In the case of a tumor 10 B concentration of 65 ppm, the treatment efficacy depended more strongly on the FNR when the normal-tissue 10 B concentration was 0.65 ppm, which would be brought about by the administration of an advanced chemical compound, than when the 10 B concentration was 18 ppm, which is attainable by the use of boronophenylalanine., (Copyright © 2018 Elsevier Ltd. All rights reserved.)

Published
2019
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