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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An intense neutron source facility in Japan, A-FNS aims at irradiation test of the fusion materials under the similar radiation damage environment by deuterium-tritium fusion neutrons in the fusion reactor. In the beam commissioning phase and common operation phase of A-FNS, total neutron yield and energy spectrum should be measured precisely using a neutron spectrum monitor system. We are working on the design of the neutron spectrum monitor system using activation method to be focused on high energy neutrons, which cause displacement damage and helium production in the material. In this article, we describe the design status of the neutron spectrum monitor system with activation method and the related experimental study using d-Li neutrons, which have similar neutron spectrum to that from A-FNS.
会議概要（会議名, 開催地, 会期, 主催者等）
18th International Conference on Fusion Reactor Materials
Investigation on A-FNS Neutron Spectrum Monitor System
