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Development of a Prototype Fast Neutron Active Coincidence Collar for Safeguards.
- Source :
- Journal of the Institute of Nuclear Materials Management; 2016, Vol. 44 Issue 2, p45-52, 8p
- Publication Year :
- 2016
-
Abstract
- The International Atomic Energy Agency has developed a prototype liquid scintillator-based neutron coincidence collar in collaboration with the European Commission (EC) Joint Research Centre in ISPRA and Hybrid Instruments, Ltd. (UK). The fast-neutron detection capabilities are particularly beneficial for coincidence counting safeguards applications. Detection of neutrons from fission events does not require a thermalization process, thus neutrons coming from the same event are detected with almost zero delay. This feature makes possible the minimization of the detector coincidence gate to ~60 ns, and thus a three orders of magnitude reduction in accidentals. This enables the system to work in a low-signal condition (e.g., fast-mode fresh fuel interrogation) with an acceptable signalto-noise ratio. This results in significantly lower measurement statistical error compared to the standard 3He-based thermal neutron detectors. This activity has been partly sponsored by the UK, Netherlands, and EC Support Programs to IAEA Safeguards. [ABSTRACT FROM AUTHOR]
- Subjects :
- FAST neutrons
NEUTRON counters
THERMAL neutrons
Subjects
Details
- Language :
- English
- ISSN :
- 08936188
- Volume :
- 44
- Issue :
- 2
- Database :
- Supplemental Index
- Journal :
- Journal of the Institute of Nuclear Materials Management
- Publication Type :
- Academic Journal
- Accession number :
- 164294102