Avramidis KA, Bertinetti A, Albajar F, Cau F, Cismondi F, Gantenbein G, Illy S, Ioannidis ZC, Jelonnek J, Legrand F, et al. Numerical Studies on the Influence of Cavity Thermal Expansion on the Performance of a High-Power Gyrotron. {IEEE} Transactions on Electron Devices [Internet]. 2018;65:2308?2315.