Thermal simulation of a Multiple Beam Electron gun for Ku-Band Klystron

This article reports thermal analysis of a multiple beam electron gun for a Ku band multiple beam klystron. Thermal analysis of the electron gun has been carried out to estimate temperature distribution at different parts of the electron gun including each individual emission button. It is necessary to have uniform temperature distribution among the emission buttons to ensure uniform electron emission. The electrode and support structure and joints have been optimized to minimize thermal drain in hot condition. Estimation of the thermal deformations in the cathode geometry and the operating power have also been done.