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Updated: Jul 13, 2026

Microwave Photonics Systems Based on Whispering-gallery-mode Resonators
Published on: August 5, 2013
Mode switching in a gyrotron with azimuthally corrugated resonator
G S Nusinovich1, O V Sinitsyn, T M Antonsen
1IREAP, University of Maryland, College Park, Maryland 20742-3511, USA.
Abstract:
The operation of a gyrotron having a cylindrical resonator with an azimuthally corrugated wall is analyzed. In such a device, wall corrugation cancels the degeneracy of the modes with azimuthally standing patterns. The coupling between these modes depends on the radius of electron beam. It is shown that such a gyrotron can be easily switched from one mode to another. When the switching is done with the repetition frequency equal to the rotational frequency of magnetic islands, this sort of operation can be used for suppression of neoclassical tearing modes in large-scale tokamaks and stellarators.
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