Nuclear Reactivity Calculation with Reduction of Fluctuations

This article presents a study based on series of numerical experiments. It demonstrates the possibility reducing fluctuations in calculation reactivity using second Bernoulli number approximation Euler-Maclaurin formula. approach requires knowledge first three derivatives, which are implemented progressively. The assumed to occur around an average value neutron density with Gaussian distribution. Jitter reduction is performed first-order delayed low-pass filter for different forms population density, time steps and constants. results show that method can be used as digital meter.