CAEP RF Photoinjector

(MO-3-01)

Li Zhenghong, Hu Kesong, Li ming Yang Maorong, Qian Mingquan  

Institute of Applied Electronics in CAEP

RF photoinjector is one kind of high-brightness electron beam sources. Now the better experimental results have been made on CAEP photoinjecter. 70A electron beam of 2MeV in energy is achieved, 10ps micropulse width of 81.25MHz repetition and 2.5 $\mu$s macropulse width of 3Hz repetition. The system works stable, and is made of the driving laser, the RF cavity for the photoinjecter, the vacuum chamber for Cs2Te photocathode fabrication, high power microwave system, the measurements, and etc. Meanwhile the driving laser is very important in the system, it output directly affects the parameters of the electron beam. Now the output of the driving laser can reach 1$\mu$J/micropulse at the fourth harmonics, the timing jitter is below 2ps.