The mathematical modeling of main operation mode of AIC-144 multi-purpose isochronous cyclotron

The mathematical model for calculation of currents in main, twenty trim coils and two pairs of harmonic coils of multi-purpose isochronous cyclotron AIC-144 (INP of PAS (Krakow)) is considered. The results of numerical calculations of dynamics of the accelerated ion beam in approximation of the closed equilibrium orbits for the AIC-144 main operation mode are also given. On the basis of the results of computer modeling executed by means of Cyclotron Operator Help Program Complex 2009 for the AIC-144 main operation mode, in June 2009 the beam of protons with kinetic energy of extraction Ek∼60 MeV has been successfully accelerated and extracted. The extracted beam of the accelerated ions has been used for the successful proton therapy of melanoma of eye at first nine patients which has been executed in the INP of PAS in February - April 2011