Beam dynamics of the CRNL superconducting cyclotron extraction system

The extraction system for the Chalk River superconducting cyclotron consists of a single electrostatic deflector followed by a series of magnetic elements. These employ both passive iron elements and superconducting windings that provide variable deflection and focusing to extract all ions with acceptable beam growth and phase space distortion and with no physical motion of any components. Calculations done to analyze the performance of this system are described. Included is a description of the treatment of the field map data used for both the main magnetic field and for the channel elements. The beam dynamics for several ions in the extraction channel are described in detail