Thermal Analysis of Electron Gun for the Sheet Beam Extended Interaction Oscillator

An novel heater structure capable of providing higher heating efficiency is designed. A method is proposed to equate the thermal resistance that occurs during the actual assembly process. The thermal and structural analysis of the sheet beam gun are completed using the finite element code ANSYS. The new structure reduces heating power by 50% (31.6 W to 15.9 W) at a cathode temperature of 1100 °C and also shows better performance in thermal deformation than the previous one.