Development of High Power Coupled-Cavity Travelling Wave tube (CC-TWT)

Abstract

Radar transmitters. The tube has four main parts: 1. Electron gun; 2. Collector; 3. Coupled cavity slow wave structure; and 4. I/P and O/P waveguide coupler with rf window. Electron gun produces electron beam, CCSWS reduces the velocity of rf signal equal to the velocity of electron beam. The interaction takes place between electronbeam and rf signal. Electron bunches are formed if signal is amplified. CC-TWT has been designed by CEERI and its development work is in progress. Various subassemblies like Electron gun, CCSWS, I/P and O/P waveguide couplers with rf windows and collectors have been developed. After testing these subassemblies were integrated to make complete CC-TWT.