Investigations of After Cavity Interaction in Gyrotrons Including the Effect of Non-uniform Magnetic Field
Author: Roy Choudhury, Amitavo
Publisher: KIT Scientific Publishing
Published: 2014-02-05
Total Pages: 146
ISBN-13: 3731501295
DOWNLOAD EBOOK →Dynamic after-cavity interaction (ACI) in megawatt-class gyrotrons is investigated that could lead to lower output mode purity and increased level of internal stray radiation. The self-consistent KIT-IHM multi-mode-code SELFT has been modified to extend the simulation domain into the radius up-taper section of the gyrotron cavity where the probability of ACI exists. Studies on four different gyrotron configurations confirm that undesired interactions in the up-taper region can result in additional parasitic oscillations with relative power in the 1%-range.