摘要
The demo injector is designed to accelerate proton beam to 25 MeV with beam current up to 10 mA.It includes a proton ECR ion source,LEBT,a 2.1 MeV room-temperature RFQ,MEBT and superconducting RF linac system[1].It's operated in continuous-wave(CW)mode.The LLRF control system is the key component to keep RF field in cavity,used as a closed loop controller which maintains cavity field gradient and phase stability when operating the cavity with beam.The great progress of LLRF control system has been achieved since the end of 2014.With the increase of the control system scale,the number of LLRF control system was increased from 3 to 21.
