Multiphysics Design of a Magnetron High Power Transfer System

This paper proposes a particular design technique of an X-Band Magnetron to Linear Accelerator (LINAC) High Power Transfer System consisting in an 8 resonant cavities Magnetron connected to a dedicated vacuum Dielectric Window. Such study is based on a Multiphysics modeling and considers thermal-structural effects due to the cathode heating for the Magnetron and the Joule effect for the Dielectric Window. In this paper, is shown how to compensate the thermal induced degradation of the device performances, by exploiting the consequent Thermo - mechanical deformation of the opportunely designed device shape, which modifies constructively the electromagnetic fields to re-increase performances. The proposed study provided the evaluation of the Magnetron Working Points and Dielectric Window Scattering parameters in Thermo - mechanical operative conditions.