Fast raster scanning system for HIMAC new treatment facility

A new treatment facility project, as an extension of the existing HIMAC facility, has been initiated for the further development of carbon-ion therapy in NIRS. The challenge of this project is to realize treatment of a moving target by scanning irradiation. In order to realize this by rescanning with gating within an acceptable irradiation time, the development of a fast scanning system is required. To test the fast rescanning irradiation and to verify the design, a new scanning irradiation system was installed into existing HIMAC experiment course. The beam test of the fast scanning system was successfully carried out. In this paper, the performance of the fast scanning was demonstrated.