Modeling and analysis of SLED

SLED （SLAC Energy Doubler） is a crucial component for the C-band microwave acceleration unit of a soft X-ray Free Electron Laser （SXFEL）. To study the behavior of SLED, a mathematical model is commonly built and analyzed. In this paper, a new method is proposed to build the model of SLED at the Shanghai Institute of Applied Physics. With this method, the parameters of the two cavities can be analyzed separately. Also it is suitable to study parameter optimization of SLED and analyze the effect from the parameters variations. Simulation results of our method are also presented.