End-to-end beam simulations for C-ADS injector ii

The Injector II for the proposed Chinese Accelerator Driven System (C-ADS) is designed to accelerate proton beam to ~10 MeV with beam current up to ~ 10 mA. The accelerator system will include a proton ECR ion source, a Low Energy Beam Transport (LEBT), a roomtemperature Radio Frequency Quadrupole (RFQ), a Medium Energy Beam Transport (MEBT), a Superconducting (SC) linac system and a High Energy Beam Transport (HEBT). Both RFQ and the SC linac will have a base frequency of 162.5 MHz. The accelerating cryomodules in the SC linac use SC half-wave cavities for acceleration, and SC solenoids with dipole correctors for transverse focusing and central orbit correction. End-toend beam simulations starting with a realistic initial beam from the ECR ion source were performed using DYNAC code to evaluate the C-ADS Injector II accelerator system performance, perform code benchmarking with TRACK, and explore system design options for future optimization. The results of these beam dynamics studies will be presented in the paper.