Title :
Optimization of a Sheet Electron Beam Interaction With a Slow Wave
Author :
Pchelnikov, Yuriy N. ; Yelizarov, Andrey A.
Author_Institution :
Sci. Applic. Int. Corp., McLean, VA, USA
Abstract :
A simple planar circuit model consisting of impedance and screen electrodes is used to analyze the strength of the interaction of a sheet electron beam with the in-phase slow-wave mode of the circuit. The impedance approximation is used to represent the fields of E- and H-waves by the zero and ±1 space harmonics. A new generalized formula for the coupling coefficient characterizing the interaction strength is used to demonstrate its dependence on the thickness of the sheet beam and the distance between the impedance and screen electrodes. A comparison between the coupling coefficients calculated for sheet and cylindrical beams shows the significant advantage of the sheet beam configuration.
Keywords :
approximation theory; electrodes; electron beams; slow wave structures; E-waves; H-waves; coupling coefficient; impedance approximation; impedance electrodes; in-phase slow-wave mode; interaction strength; screen electrodes; sheet beam; sheet electron beam interaction; simple planar circuit; slow wave; space harmonics; Approximation methods; Couplings; Electrodes; Electron beams; Electron tubes; Harmonic analysis; Impedance; Coupling coefficient; impedance electrodes; interaction; sheet electron beam (EB); traveling-wave tube (TWT); traveling-wave tube (TWT).;
Journal_Title :
Electron Devices, IEEE Transactions on
DOI :
10.1109/TED.2013.2296563
