Cart (Loading....) | Create Account
Close category search window

Three-dimensional nonlinear theory of helix traveling-wave tubes

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

1 Author(s)
Freund, H.P. ; Sci. Applications Int. Corp., McLean, VA, USA

A three-dimensional (3-D) nonlinear helix traveling-wave tube (TWT) analysis in the frequency domain is presented for a tape helix surrounded by a conducting wall. Dielectric- and vane-loading of the helix are included, as is circuit tapering and external focusing, by either a solenoid or a field produced by a periodic permanent magnet (PPM) stack. A complete tape helix dispersion equation is derived by an eigenvector analysis. The electromagnetic field is treated as a superposition of eigenvectors at different frequencies whose amplitudes and phases vary slowly in z. The nonlinear field equations are solved in conjunction with the three-dimensional Lorentz force equations for an ensemble of electrons. Beam space-charge waves are included using a superposition of solutions of the Helmholtz equation. The DC self-fields of the beam are also included. The three-dimensional simulation is compared with a previous 2.5 dimensional simulation using a sheath helix model, each of which is compared with a tube built at Northrop-Grumman Corp. The tape helix model is shown to be in substantially better agreement with the experiment than the sheath helix model.

Published in:

Plasma Science, IEEE Transactions on  (Volume:28 ,  Issue: 3 )

Date of Publication:

Jun 2000

Need Help?

IEEE Advancing Technology for Humanity About IEEE Xplore | Contact | Help | Terms of Use | Nondiscrimination Policy | Site Map | Privacy & Opting Out of Cookies

A not-for-profit organization, IEEE is the world's largest professional association for the advancement of technology.
© Copyright 2014 IEEE - All rights reserved. Use of this web site signifies your agreement to the terms and conditions.