Sensitivity analysis of a 140-GHz coaxial gyrotron cavity with corrugations on the inner and outer walls

摘要

Coaxial cavities with corrugated inserts and additional corrugations on the outer wall seem to have the potential for superior mode-selectivity and could be used to facilitate the development of multi-MW gyrotrons. This concept is used in this work to upgrade the design of an already manufactured 140-GHz coaxial gyrotron. A detailed sensitivity parametric study is performed to ensure mode stability. All calculations have been performed with a full-wave numerical code based on the Spatial Harmonics Method.