Development of Compact Proton Synchrotron for Radiation Therapy

Abstract The present status of the magnet and power supply systems for a compact medical proton synchrotron under development is described according to experiences obtained from the detailed field measurement on the prototype 3T dipole magnet and the full scale 200 kA pulsed power supply. By sacrificing the small momentum dispersion of the original lattice, it is possible to achieve the smaller synchrotron ring with the reduced number of the quadrupole magnet keeping the present specification of the dipole. Based on the design studies for the compact proton synchrotron some prospects are given on the design of the compact carbon-ion synchrotron