By Topic

Excitation of Backward Waves in Beam Tunnels of High-Power Gyrotrons

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

3 Author(s)
Jiao Yu ; Inst. for Res. in Electron. & Appl. Phys., Univ. of Maryland, College Park, MD, USA ; Antonsen, T.M. ; Nusinovich, G.S.

The starting conditions for excitation of backward waves in the beam tunnel between an electron gun and a cavity of a high-power gyrotron are studied. The excitation of these waves leads to electron energy spread that spoils the beam quality and, hence, degrades the gyrotron efficiency. The suppression of these modes by a resistive coating on the wall of a smooth beam tunnel is examined. The guiding magnetic field and the tunnel wall radius vary along the axis, and thus, the theory is essentially the small-signal theory of a gyro-backward-wave oscillator (gyro-BWO) with tapered parameters. The results obtained are applied to a sample gyrotron.

Published in:

Plasma Science, IEEE Transactions on  (Volume:38 ,  Issue: 6 )