Modernization of neutron monitor IGY-57

Abstract

The main goal of this article is the calculation of physical parameters of the neutron moderator for the thermalization of evaporated neutrons generated in the local lead generator of the neutron monitor IGY- 57. Calculation was performed by using GEANT4 (for GEometry ANd Tracking) which is a platform for “the simulation of the passage of particles through matter,” using Monte Carlo methods. On the basis of data gained during simulation we designed the “geometry” of the experimental setup which includes the thicknesses of moderator and reflector of the experimental setup. The reason to moderate the neutrons which are generated in the local lead generator of the neutron monitor IGY-57 is the fact that the counters that are used in our experimental setup can register only thermal neutrons. This is why process of thermalization of generated neutrons is of such great importance.