DEVELOPMENT OF COMPACT FFAG ACCELERATOR FOR HEAVY ION RADIOTHERAPY

In recent years successful clinical trials at Heavy Ion Medical Accelerator in Chiba (HIMAC) have proven the heavy-ion accelerator to be a powerful tool for cancer treatment. Based on our satisfactory clinical records at HIMAC (1), we plan to propose a compact, cost-effective medical Fixed-Field Alternating-Gradient (FFAG) accelerator to establish the medical standards for a carbon-beam cancer therapy. In this study we present our current accelerator design scheme.