H- cusp source, injection line and central region for 100 MeV compact cyclotron at CIAE

A 100 MeV H- cyclotron is being designed in China Institute of Atomic Energy (CIAE) now. It will provide a 75 MeV - 100 MeV, 200 μA - 500 μA proton beam for various applications, including serving as a driving accelerator for RIB generation. Due to the limit of acceptance by the cyclotron central region, a new H- cusp source was developed at CIAE. More than 10 mA of H- beam with a measured emittance of 0.65 pi mm mrad are obtained at a voltage of 28 kV from an extraction hole of 11 mm in diameter. In this paper, the design aspect of the axial transportation line for high intensity beam injection, the inflector and central region will be also described respectively. (author)