HEAVY ION MEDICAL ACCELERATOR IN CHIBA(HIMAC)

HIMAC at NIRS is a heavy-ion synchrotron complex dedicated to the medical use. It consists of an injector system, a two-synchrotron ring system, a high-energy beam delivery system, and an irradiation sys­ tem. Heavy ions such as He, C, Ne, Si, and Ar are accelerated in an energy range of 100-800 MeV/u and are delivered to six irradiation rooms as vertical and/or horizontal beams.