Low-voltage hybrid FEL with comb waveguide

Author

Kuleshov, A.N. ; Yefimov, B.P.

Author_Institution

Inst. for Radiophys., Nat. Acad. of Sci. of Ukraine, Kharkov, Ukraine

fYear

2004

fDate

27 Sept.-1 Oct. 2004

Firstpage

603

Lastpage

604

Abstract

The research results of hybrid free-electron laser (FEL) design consisting of resonator and magnetron gun are presented here. The resonator is made of a circular waveguide segment and the periodic structure, which has form hollow cylindrical waveguide with transversal slits, is placed in this segment. When accelerating voltage was up to 20 kV the device radiated microwave power in 2-3 cm wavelength range. It was established that radiation was caused by synchronism of longitudinal velocity of cyclotron electron beam motion with phase velocity of slow space harmonic of the tube periodic structure. The synchronism of the wave and electron beam took place in a wide range of accelerating voltages. Cyclotron beam motions were driven by the leading magnetic field of the electrical magnet.

Keywords

circular waveguides; free electron lasers; magnetrons; periodic structures; resonators; synchronisation; waveguide lasers; 2 to 3 cm; 20 kV; circular waveguide segment; comb waveguide; cyclotron electron beam motion; electrical magnet; electron beam synchronism; hollow cylindrical waveguide; hybrid free electron laser design; longitudinal velocity; low voltage hybrid FEL; magnetic field; magnetron gun; phase velocity; radiated microwave power; resonator; space harmonics; transversal slits; tube periodic structure; Acceleration; Cyclotrons; Electron beams; Free electron lasers; Hollow waveguides; Masers; Optical design; Periodic structures; Voltage; Waveguide lasers;

fLanguage

English

Publisher

ieee

Conference_Titel

Infrared and Millimeter Waves, 2004 and 12th International Conference on Terahertz Electronics, 2004. Conference Digest of the 2004 Joint 29th International Conference on

Print_ISBN

0-7803-8490-3

Type

conf

DOI

10.1109/ICIMW.2004.1422235

Filename

1422235