DC Analysis of Space Traveling Wave Tube

The electron trajectory, from electron gun to collector through helix, of traveling wave tube (TWT) with magnetic field in DC condition is analyzed. The electron beam from cathode in the electron gun is confined by the PPM focusing structure and traversed helix in the RF section and collected in the collector. This paper presents complete DC simulation of a TWT and minimization of helix interception current by optimizing magnetic field as well as with secondary emission in collector using OPERA simulation software.