Nonlinear dynamics of the gyrotron traveling wave amplifier
Journal
Physics of Fluids B
Journal Volume
3
Journal Issue
8
Pages
2403-2408
Date Issued
1991
Author(s)
Abstract
Mode interactions in the gyrotron traveling wave tube amplifier (gyro-TWT) are examined with particle simulations and compared with experimental observations. Studies focus on the competition between the absolute and convective instabilities. Detailed diagnostics on mode structures, field growth profiles, and evolution of electron distribution in momentum and energy spaces allow an in depth look at the basic physical processes, such as the mechanism of mode competition and suppression. Mutual verifications between the theory and experiment have strengthened understanding of the multimode behavior and added to the predictability of high-power gyro-TWT’s.
SDGs
Type
journal article