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Application of variance-to-mean technique to subcriticality monitoring for accelerator-driven subcritical reactor
Courtesy of Inderscience Publishers
To investigate the applicability of the Feynman- (or variance-to-mean) and Rossi-α techniques to subcriticality monitoring of the future accelerator-driven subcritical reactor (ADSR), a series of experiments was performed at the Kyoto University Critical Assembly (KUCA). To simulate the pulse mode operation of the ADSR, a D-T pulsed neutron generator was employed. As a result, it was observed that the α-values measured by these techniques clearly depended on the subcriticality, ranging from $0.65 to $2.72. Furthermore, through measurements in transient states that were realised by operating control rods, it was found that one can detect subcriticality changes in quasi-real-time.
Keywords: neutron correlation technique, Feynman-&, #945, variance-to-mean, Rossi-&, #945, technique, accelerator-driven subcritical reactors, ADSR, pulse mode, subcriticality monitoring, quasi-real-time measurement, spallation neutron source, Kyoto University Critical Assembly, KUCA, Japan, nuclear reactors, nuclear energy, nuclear power, nuclear technology, nuclear science
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