Investigation of the influence of various reflector elements material types on the core nuclear parameters of the 2 MW Triga Mark-II research reactor using the Monte Carlo code

Abstract

The influence of variation in the kind of material of neutron reflector elements on the core neutronic parameters of the Moroccan Triga Mark-II research reactor was examined. The comparison was made between three kinds of reflector element materials: graphite, beryllium, and beryllium oxide. MCNP5 Monte Carlo computations of the effective neutron multiplication factor ( k ef f ) of the reactor according to the number of reflector material elements inserted in the reactor core for these three reflector elements materials families were carried out. The results found could be used in order to increase the k ef f parameter without changing the size of the reactor.

Analyzing the Neutron Parameters in the Accelerator Driven Subcritical Reactor Using the Mixture of Molten Pb-Bi as Both Target and Coolant

“…In these studies, the coolant was light water. Also from this model, Abdelaziz Darif et al [8] calculated the dependence of the effective neutron multiplication factor (k eff ) on the number of reflectors in the core of the reactor. The results showed that keff can be increased without changing the size of the core.…”

“…In general, there are not many studies on neutron parameters for ADSR using molten Pb-Bi as a target and coolant. In this paper, ADSR was simulated based on TRIGA-Mark II reactor structure [6][7][8] using the MCNPX program. From this structure, the neutron parameters were calculated, including:…”