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Report No.

Development of nuclear materials assay system using alternative He-3 neutron detectors

Kureta, Masatoshi; Soyama, Kazuhiko; Nakamura, Hironobu; Seya, Michio; Ozu, Akira; Nakamura, Tatsuya; Haruyama, Mitsuo

Alternative techniques to neutron detection by He-3 for safeguards and nuclear security systems are necessary to be developed since He-3 gas shortage is serious. With support of Japanese government (MEXT), we have conducted an R&D project of ZnS ceramic scintillator neutron detectors for non-destructive assay (NDA) of Pu in Fresh MOX fuel and other types of nuclear materials for a use of safeguards verification. Here we present the fundamental tests and the current status of the development of the Pu-NDA system for the demonstration.



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