P2-9: Parameter research in the time-dependent PIC simulation of TWTA

Computer simulation of beam-wave interaction of helix TWTA is always the most important and complicated part during the industrial design progress. For the purpose of setting simulation parameters fast and accurately, it is adopted Particle-In-Cell technique and Finite Difference Time Domain method to program in C against this research. In addition, the total number of cells is more sensitive than the number of the macro particles through the comparison and analysis. This conclusion could be taken as some reference of common parameter settings in the engineering.