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Abstract

This article presents a study for the calculation of reactivity using the matrix formulation method for reducing fluctuations in the density of the neutron population present in a nuclear reactor. A first-order low-pass delay filter was used, assuming random noise with Gaussian distribution around the mean value of the neutron population density. Studies were made of the different values that the density of neutrons could have, considering an exponential form, a specific time step to carry out experiments with different filtration constants. The results show how it is possible to reduce fluctuations, obtaining a very low average error, using the low- pass filter with the matrix formulation method.