Determination of the Radial Profile of the Beam Current Density in Emittance Dominated Beams for High Frequency TWTS

High frequency tubes are limited on their power handling capabilities due to their very small beam size. Typically, the beam cross section is chosen as half of the minimum width of the tube cross section i.e. the beam size scales down linearly as the frequency goes higher. In addition, velocity spre...

Full description

Saved in:
Bibliographic Details
Main Author: Zuboraj, Muhammed
Format: Conference Proceeding
Language:English
Subjects:
Conferences
Current density
Electron tubes
High frequency
Particle beams
Plasmas
Online Access:Request full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:High frequency tubes are limited on their power handling capabilities due to their very small beam size. Typically, the beam cross section is chosen as half of the minimum width of the tube cross section i.e. the beam size scales down linearly as the frequency goes higher. In addition, velocity spread is very prominent in small cross section beams and, as such, beams are mostly dominated by emittance. One of the biggest challenges for high frequency tubes is to determine the maximum allowable beam size without significant current interception. This will enable the tube to operate with the greatest possible beam power and thus have both the largest gain and output power possible. Therefore, we propose to determine the intercepted beam current in an emittance dominated beam for high frequency tubes. Our objective is to provide the tools needed to determine beam pipe sizes for arbitrary levels of beam emittance and beam current interception rates.
ISSN:2576-7208
DOI:10.1109/ICOPS35962.2018.9575660