Monte Carlo Model of the Experiment on Measuring the Neutron Lifetime

Resumo

A Monte Carlo model is developed for an experiment on measuring the neutron lifetime by the method of ultracold neutrons (UCNs) in a material storage trap. The trajectory of each neutron is calculated with allowance for gravity. The model fully reproduces all stages of the experiment. The necessary statistics are compiled by calculations on a computer cluster. The calculation results demonstrate the agreement between the calculated and experimental time dependences of the detector count and determine the systematic uncertainty associated with the method for calculating the effective collision frequency of ultracold neutrons in a trap. The simulation of all details of this experiment is extremely important for substantiating the attained accuracy and for proving the absence of systematic errors.