IN-LINE XENON CONVERGENCE ALGORITHM FOR MONTE CARLO REACTOR CALCULATIONS

摘要

This paper presents an integrated xenon feedback method for use in Monte Carlo reactor calculations. This method enables the calculation of the equilibrium xenon distribution for a reactor during the initial Monte Carlo fission source convergence process. A new extension to this capability allows the calculation of the peak xenon concentration within a reactor following shutdown from power operations. These algorithms have been implemented and tested in MC21, an in-house, continuous-energy Monte Carlo particle transport code. This paper provides a brief description of the solution algorithms used in the integrated xenon feedback method, along with numerical results for a pressurized water reactor (PWR) example problem.