Problems of Constructing the Nuclotron Virtual Model

Problems connected with the Nuclotron virtual simulation model within MADX are considered. The main objective of the study is a more precise specification of the exiting accelerator model, so that the numerical results obtained using MADX are as close as possible to the experimental data obtained in the last Nuclotron runs. The groups of parameters that bring theoretical calculations closer to the experimental data are found via analyzing the impact of the model characteristics on the numerical results.