Title :
An overmoded coaxial buncher cavity for a 100-MW gyroklystron
Author :
Castle, M. ; Anderson, J. ; Lawson, W. ; Saraph, G.P.
Author_Institution :
Maryland Univ., College Park, MD, USA
fDate :
9/1/1998 12:00:00 AM
Abstract :
An overmoded abrupt transition coaxial buncher cavity has been designed and experimentally cold tested for use in a second-harmonic 17.136-GHz three-cavity 100-MW gyroklystron. Circuit efficiencies of 41% can be achieved with a buncher cavity that has a quality factor of 389 in the TE021 mode. Scattering matrix and finite-element codes were used to design and model the cavity theoretically and to determine that the cavity would be stable to oscillation. The experimental cold testing confirmed these results and refined the final dimensions from the theoretical models
Keywords :
Q-factor; S-matrix theory; cavity resonators; finite element analysis; gyrotrons; klystrons; microwave amplifiers; microwave tubes; stability; 100 MW; 17.136 GHz; 41 percent; TE021 mode; abrupt transition; finite-element codes; gyroklystron; modelling; overmoded coaxial buncher cavity; quality factor; scattering matrix; second-harmonic type; three-cavity configuration; Ceramics; Circuits; Coaxial components; Klystrons; Microwave amplifiers; Q factor; Scattering; Tellurium; Testing; Transmission line matrix methods;
Journal_Title :
Microwave and Guided Wave Letters, IEEE
