JAEA development programs of advanced technologies for safeguards and security

Bolind, A.; Kureta, Masatoshi   ; Soyama, Kazuhiko  ; Hajima, Ryoichi; Harada, Hideo   ; Nakamura, Takahisa; Seya, Michio

This paper reports the progress that has been made at JAEA concerning 4 development programs of advanced technologies for the measurement of nuclear material for safeguards and security. One program is developing a neutron detector based on a ZnS ceramic scintillator material, to replace He neutron detectors. The other 3 programs are developing new non-destructive assay (NDA) systems. One system measures the nuclear resonance fluorescence (NRF) induced in fissile material by a high-intensity, mono-energetic ray beam, produced by a Laser Compton Scattering (LCS) system in an energy-recovery linac (ERL). Another system uses both neutron resonance transmission analysis (NRTA) and neutron resonance capture analysis (NRCA) to determine the fissile content in particle debris of melted nuclear fuel. The last system is a neutron-based, spent-fuel, NDA system that is being developed at Los Alamos National Laboratory (LANL). The system uses combines the techniques of self-interrogation neutron resonance densitometry (SINRD) and passive neutron albedo reactivity (PNAR). It will be tested on used nuclear fuel assemblies in the spent fuel pool at Fugen.