Numerical simulation of ion acceleration and extraction in cyclotron DC-110

At the Flerov Laboratory of Nuclear Reactions of JINR, in the framework of the project BETA, a cyclotron complex for a wide range of applied research in nanotechnology (track membranes, surface modification, etc.) is being created. The complex includes a dedicated heavy-ion cyclotron DC-110, which yields intense beams of accelerated ions Ar, Kr and Xe with a fixed energy of 2.5 MeV/A. The cyclotron is equipped with external injection on the base of ECR ion source, a spiral inflector and the system of ion extraction consisting of an electrostatic deflector and a passive magnetic channel. The results of calculations of the beam dynamics in measured magnetic field from the exit of the spiral inflector to the correcting magnet located outside the accelerator vacuum chamber are presented. It is shown that the design parameters of ion beams at the entrance of the correcting magnet will be obtained using a false channel, which is a copy of the passive channel, located on the opposite side of the magnetic system. Extraction efficiency of ions will reach 75%.