Theoretical and experimental investigations of the high power MBK, based on 2.5 D Arsenal-MSU computer code

The 2.5 D code Arsenal-MSU is based on fully relativistic self-consistent algorithms for numerical simulation of beam-wave interaction in all parts of the klystron from cathode to collector. This code has been used to calculated C-band and L-band MBK designed and manufactured by IECAS. The problems met on both physical modules and calculation methods is presented. Some modifications made on code are also described in this paper. The calculation results and comparison with 1D code and experiment are given out.