Synchronization of radiation in an oversized coaxial Ka-band backward wave oscillator using two-dimensional Bragg structure
Abstract
A coaxial Ka-band backward wave oscillator with a two-dimensional Bragg structure located at the output of the interaction space has been studied. This structure has a double-period corrugation and provides azimuthal electromagnetic energy fluxes, which act on the synchronized radiation of an oversized tubular electron beam. Proof-of-principle experiments were conducted based on the Saturn thermionic accelerator (300 keV /200 A /2 μ s ). In accordance with simulations, narrow-band generation was obtained at a frequency of 30 GHz and a power level of 1.5-2 MW. As a result, the possibility of using a two-dimensional distributed feedback mechanism in oscillators of the Cherenkov type has been demonstrated.
- Publication:
-
Physical Review Accelerators and Beams
- Pub Date:
- December 2015
- DOI:
- 10.1103/PhysRevSTAB.18.120701
- Bibcode:
- 2015PhRvS..18l0701G
- Keywords:
-
- 41.75.Ht;
- 52.35.Hr;
- 84.40.Fe;
- Relativistic electron and positron beams;
- Electromagnetic waves;
- Microwave tubes