  For the Rapid Cycling Synchrotron of the China Spallation Neutron Source
(CSNS/RCS), the electron emission plays an important role in the accelerator
limitation. The interactions between the proton beam and the stripping foil
were studied, and the electron scattering processes were simulated by the ORBIT
and FLUKA codes. Then, the electron energy distribution and the electron
yielding rate can be given. Furthermore, the interactions between the proton
beam and the collimation system were studied, and the electron scattering
processes were simulated. Then, the energy distribution of the primary electron
emission can be given and the yielding rate of the primary electron can be
obtained.
