Central Region Design in a Compact Cyclotron

Methods for designing and optimizing the central region of a compact cyclotron are described. Algorithms for the development of the geometric structure of the center, providing both an effective beam transmission and a high quality of the beam captured for the further acceleration, are given. Methods of computer modeling of the cyclotron central region are considered. The description of most basic elements of the beam control and shaping in modern cyclotrons and the methods for optimizing their parameters are given. Both cyclotrons with internal ion source and with external injection using spiral electrostatic inflector are considered.