Design and operation of the HIMAC injector

A heavy-ion synchrotron dedicated to medical use is under construction at the National Institute of Radiological Sciences, Japan. The injector system, comprising a PIG source, an ECR source, an RFQ linac, and an Alvarez linac of 100 MHz, accelerates heavy ions with a charge-to-mass ratio as small as 1/7, up to 6 MeV/nucleon. First operation of the injector system has shown satisfactory performance. >