Physical anomaly detection and identification using Cerenkov radiation

This paper demonstrates the potential use of a method of power profile determination using Cerenkov radiation to detect and identify some physical anomalies in a reactor. Specifically, the blockage of a coolant channel in a square lattice TRIGA reactor is investigated. The ability to quickly detect some blockages is demonstrated. A method is developed through which the blocked channel and approximate size and location of the blockage within the channel can be found by comparing the detectable visible Cerenkov radiation at multiple locations above the core. An example blockage scenario is analyzed, and its location determined from the information obtainable from Cerenkov light detection viewpoints above the core. (C) 2020 Elsevier Ltd. All rights reserved.