Development of a tiny neutron probe with an optical fibre for BNCT |
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| Authors: | Ito Y Katano G Harano H Matsumoto T Uritani A Kudo K Kobayashi K Yoshimoto T Sakurai Y Kobayashi T Mori C |
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| Affiliation: | National Metrology Institute of Japan, National Institute of Advanced Industrial Science and Technology, Tsukuba 305-8568, Japan. |
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| Abstract: | We have developed a tiny neutron probe detector as a monitor of a thermal neutron flux for boron neutron capture therapy. The detector consists of an optical fibre and a small neutron probe. We have used a film-like ZnS(Ag) scintillator and a 6LiF neutron converter for the neutron probe. In order to improve the gamma-neutron discrimination ability, vacuum evaporation of 6LiF onto the ZnS(Ag) film has been done. In order to improve the neutron detection efficiency, we made use of a wavelength-shifting fibre as the probe material. The characteristics of the above two types of fibre probe detector have been evaluated experimentally. |
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