The Electron Optical System for 0.34-THz Folded Waveguide Traveling Wave Tube

Abstract

The electron optical system (EOS) for a 0.34-THz folded waveguide traveling wave tube is designed and tested, the electron gun of this EOS is a pierce triode electron gun, the focusing magnetic system is a periodic permanent magnet (PPM) system. In the test of beam transmission tube, the emission current achieves 24.5 mA, the transmission ratio achieves 92%, and the duty cycles achieve 50% with forced cooling.