Theoretical analysis of a thermal plasma-loaded relativistic traveling wave tube having corrugated slow wave structure with solid electron beam

Effect of Plasma and Dielectric Loading on the Slow-Wave Properties of a Traveling-Wave Tube

The slow-wave dispersive properties of a traveling-wave tube (TWT) changes considerably when either the helix is supported by a dielectric or the waveguide is filled with plasma. The dispersive properties of the dielectric-supported helix waveguide have been examined for different geometric parameters of the helix waveguide. The dispersion relation of the helix mode is found to be upshifted by ...

A Simple Analysis of Helical Slow-wave Structure Loaded by Dielectric Embedded Metal Segments for Wideband Traveling- Wave Tubes

A simple field analysis was developed for helical slowwave structure symmetrically supported by rectangular shaped discrete dielectric support rods partially embedded in the metal segments projecting radially inward from a metal envelope for wideband traveling-wave tubes. The tape helix model was used for the prediction of the dispersion relation and the interaction impedance characteristics. T...

Multi-megawatt Relativistic Harmonic Gyrotron Traveling-Wave Tube Amplifier Experiments

PFC / JA - 93 - 11 Pierce - Type Dispersion Relation for an Intense Relativistic Electron Beam Interacting with a Slow - Wave Structure

A Pierce-type dispersion relation is derived from field theory which describes the interaction of an intense relativistic electron beam with a cylindrical slow-wave structure of arbitrary corrugation depth. It is shown that near a resonance the Pierce parameter can be expressed in terms of the vacuum dispersion function and the space-charge parameter is proportional to a fill factor. The disper...

Analytical Study of the Interaction Structure of Vane-loaded Gyro-traveling Wave Tube Amplifier

This article discusses the-state-of-the-art of the vaneloaded gyrotron traveling wave tube (gyro-TWT) amplifier, which is device of increasing importance for high resolution radar and high information density communication systems because of its high-power and broad bandwidth capabilities. Vane loading is identified as a means to achieve a low-beam energy, high-harmonic, low-magnetic field, mod...