P2-11: Small-signal Eulerian hydrodynamic analysis of a plasma-filled helix TWT

Author

Datta, Subrata Kumar ; Kumar, Lalit ; Basu, Baidyanath

Author_Institution

Microwave Tube R&D Centre, Minist. of Defence, Bangalore, India

fYear

2010

fDate

18-20 May 2010

Firstpage

243

Lastpage

244

Abstract

Small-signal analysis of a plasma-filled helix traveling-wave tube was developed following Eulerian hydrodynamic approach. The electron beam was treated as a moving charged fluid and the plasma a stationary quasi-neutral fluid. The coupled circuit and electronic equation was developed and a Pierce-type hot dispersion relation obtained, which was then interpreted for the gain-frequency response of the device. The analysis was validated against an existing approach that treats the interaction as a boundary value problem by considering the beam-plasma system as a propagating medium of an equivalent relative permittivity tensor.

Keywords

electron beams; hydrodynamics; travelling wave tubes; Pierce-type hot dispersion relation; coupled circuit; electron beam; electronic equation; gain-frequency response; plasma-filled helix TWT; plasma-filled helix traveling-wave tube; small-signal Eulerian hydrodynamic analysis; small-signal analysis; stationary quasi-neutral fluid; Circuits; Dispersion; Electron beams; Electron tubes; Frequency; Hydrodynamics; Particle beams; Plasma devices; Plasma transport processes; Plasma waves; Beam-wave interaction; Eulerian hydrodynamic analysis; helix traveling-wave tube (TWT); plasma-filled TWT;

fLanguage

English

Publisher

ieee

Conference_Titel

Vacuum Electronics Conference (IVEC), 2010 IEEE International

Conference_Location

Monterey, CA

Print_ISBN

978-1-4244-7098-3

Type

conf

DOI

10.1109/IVELEC.2010.5503511

Filename

5503511