Monte Carlo simulation of the simplified model of the modified PRR-1 SATER using OpenMC
Abstract
The Philippine Research Reactor-1 (PRR-1) Subcritical Assembly for Training, Education, and Research (SATER) currently operates as a subcritical facility. To support more advanced nuclear science programs and expand experimental capabilities, exploring a transition to a zero-power critical (ZPC) configuration is a solution. Utilizing OpenMC, an open-source Monte Carlo neutron transport code, a simplified model of the modified PRR-1 SATER was developed. Using a two-phase algorithm, a 56-pin configuration was found to have a keff value closest to 1 with its keff = 1.00050 ± 0.00010. This demonstrates that the PRR-1 SATER is capable of holding enough fuel pins to reach criticality, opening up the possibility of PRR-1 SATER transitioning into a ZPC in the future.



