Space-time kinetics modeling for the determination of neutron detector signals in Advanced Heavy Water Reactor

During the operational transients, spatial variations in the flux-shape are possible in Advanced Heavy Water Reactor (AHWR). A mathematical model is developed for the analysis of the reactor in such situations and the signals of in-core and ex-core detectors are obtained, as these are important in many control related applications. Appropriate methods are considered for determining the flux values at the detector locations and the signal generation is done with the help of suitable amplifier models. For the validation of the methodologies, the open loop transient responses of fluxes at the detectors and their associated signals are compared with those generated from the more rigorous finite difference model.