Development and verification of a computational model of the magnetic system of the “Beta-decay” experimental facility, calculation of spatial distributions of fields and forces

The work is devoted to the development and testing of a computational model of the precision magnetic system of the experimental facility “Beta-decay” for measuring the correlation coefficients of the neutron beta-decay, created at the Scientific Research Center “Kurchatov Institute”. The magnetic field of the system in its various configurations is studied, and the possibility of applying an adapted geometric model to calculations is also investigated. The distributions of magnetic fields and forces arising in the system are calculated. Verification of the model is carried out by comparing the results of calculations performed by several independent software. The results of numerical modeling coincide with the required accuracy for all software packages used, in particular, the estimate of the relative deviation of the force values does not exceed 3 %.