Central Region of the С-250 Cyclotron

Abstract

The peculiarities of modeling of the central region and hydrogen ion beam dynamics for the cyclotron C-250 designed for operation in a wide energy control range of 30-250 MeV are considered. On the basis of modeling of ion beam dynamics in the energy control range, the optimal configuration of the central region of the accelerating system of the C-250 cyclotron is determined. The developed central region fulfills the requirements to ensure sufficient vertical focusing of particles by the electric field while capturing the beam in a wide phase range. The deviation of the centers ofparticle orbits from the geometric center of the cyclotron is 2-3 mm for the whole range of regulation of the cyclotron magnetic field.