量研学術機関リポジトリ「QST-Repository」は、国立研究開発法人 量子科学技術研究開発機構に所属する職員等が生み出した学術成果（学会誌発表論文、学会発表、研究開発報告書、特許等）を集積しインターネット上で広く公開するサービスです。 Welcome to QST-Repository where we accumulates and discloses the academic research results(Journal Publications, Conference presentation, Research and Development Report, Patent, etc.) of the members of National Institutes for Quantum Science and Technology.
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In order to assess radiation damage of a fusion material before a decision of Japanese fusion DEMO reactor construction, we have been designing an intense d-Li neutron source facility, Advanced Fusion Neutron Source (A-FNS) in Japan. A-FNS will be constructed before 2025. The main purpose of A_FNS is to acquire radiation damage data of the fusion material under fusion-like neutron irradiation testing. One of the characteristics of A-FNS is that large amounts of high energy neutrons (> MeV) are produced with an expected intensity around 6.8 x 10^16 n/s. In this study, we propose a neutron measurement system that is configured with multiple threshold reaction activation foils that are sensitive to high energy neutrons. The need to measure the cross-section data for the threshold reactions is also discussed.
ACTIVATION FOIL CANDIDATES FOR INTENSE D-LI NEUTRON MEASUREMENT UP TO 60 MEV
