COMA - A Linear Motion Code for Cyclotrons

COMA, a computer program written in FORTRAN IV, accurately calculates the relative motion of up to 5000 particles over the complete energy range of the TRIUMF cyclotron at a cost about 1% of our numerical integration codes. In addition it can simulate the action of diagnostic probes and slits. COMA uses linear transformation matrices, obtained from an equilibrium orbit code, that include coupling between radial and longitudinal motion. The energy gain and vertical focusing forces at the dee gap are given by an improved analytical model.