Criticality analysis of Kartini Reactor connected to test facility of subcritical assembly Molybdenum-99 production (SAMOP)

Abstract

Criticality Analysis of the Kartini Reactor as an external neutron source for the test facility of the Subcritical Assembly Molybdenum-99 Production (SAMOP) connected via its radial beamport is presented using The Monte Carlo N-Particle Six Version (MCNP6) software. The reactor was simulated at 100 kW operating power and the fuel of the SAMOP was a solution of uranyl nitrate with a concentration of 300 gU/L. The criticality values obtained from this research was 1.00749 ± 0.00045 and 0.99 ± 0,00041 for the Kartini and SAMOP respectively . When the both reactors were connected, criticality value was 1.01536 ± 0.00009. It could be concluded that the Kartini reactor remains critical although it was used as the neutron source for the SAMOP facility.