Design and Fabrication of a Dual Frequency 70/105 GHz, 600 kW, CW Gyrotron

Communications & Power Industries (CPI) has completed the detailed design of a dual-frequency gyrotron and matching optics unit capable of producing over 600 kW of continuous RF output at either 70 GHz or 105 GHz, by adjusting operating conditions to excite either the TE11, 3 or the TE14, 5 mode in a cylindrical interaction cavity. Fabrication of two identical gyrotrons and two matching optics units is nearly complete, and factory testing of the first gyrotron is anticipated to begin in the spring of 2024. In this paper, design analyses will be discussed, and preliminary test results, if available, will be presented.