[2D21-23] Monte Carlo Simulation Method

6:15 PM - 6:30 PM JST(9:15 AM - 9:30 AM UTC)

[2D23] Solomon’s capability of random media criticality calculation for measurement data

*Taro Ueki¹ (1. JAEA)

Keywords:

Solomon,random media,mass deviation,power spectrum,measurement data,criticality calculation,Monte Carlo

The Monte Carlo solver Solomon is a nuclear criticality code that has been under development at JAEA. Solomon has a special functionality for the criticality of a disordered system like fuel debris to evaluate the fluctuations of neutron effective multiplication factor (keff) due to uncertainties in the average composition and spatial distribution. However, this functionality lacked a method of representing macroscopic nuclear cross sections corresponding to measurement data. Therefore, in this presentation, we report a method for generating random spatial variation functions using arbitrary-shaped power spectra as input. We also report the keff fluctuations of the random media consisting of four materials together with the mass deviations of the constituent materials.