Simulation of microwave tube electron gun with five different electron optic softwares

The background and character of five different electron optic softwares(TWTCAD, EGUN, CAMEO, Workstation, Orprogr) were introduced, and the simulation of eleven different construction guns were present by the five softwares. After compared the perveance, gunshot and beam waist radius computed by these softwares with the experiment result, it gives the conclusion that different electron optic software has different precision in computing various electron gun, and then provides the error range of each sofwares, which shows that in the perveance, EGUN and Orprogr has the higher precision, its absolute average error is 7.18% and 7.4%. In the gunshot, TWTCAD is the best, which is 5.69%. In the beam waist radius, the Orprogr’s absoulte average error is 47.43%, is the worst one, but the Workstat