Energy comparison of room temperature and superconducting synchrotrons for hadron therapy

Abstract The yearly energy requirements of room temperature (RT) and superconducting (SC) magnet options a new hadron therapy (HT) facility are compared. Special reference is made to the layouts considered for proposed SEEIIST facility. Benchmarking with RT CNAO HT centre in Pavia (Italy) was carried out. comparison centred on different synchrotron solutions, assuming same injector lines designs. beam current 20 times higher than present generation facilities: this allows efficient multi-energy extraction (MEE), which shortens treatment needed especially SC option, because slow ramping time. Hence, power values traditional mode were converted into MEE ones, fair between magnets. Cryocoolers (c.c.) liquefier also compared, refrigeration. This study shows that requires least average energy, followed by solution liquefier, while most intensive one c.c.