Generation and compression of frequency modulated pulses from a relativistic BWO

Author

Samsonov, Sergey V. ; Bratman, Vladimir L. ; Burt, Graeme C. ; Cross, Adrian W. ; Denisov, Gregory G. ; Phelps, Alan D R ; Ronald, Kevin

Author_Institution

Inst. of Appl. Phys., Nizhny Novgorod, Russia

fYear

2004

fDate

18-23 July 2004

Firstpage

430

Lastpage

433

Abstract

A concept of using a helically corrugated waveguide for compression of frequency modulated microwave pulses in order to realize multi gigawatt RF radiation using microwave sources that are presently highly developed is demonstrated. Results of PIC code KARAT simulations of a Cherenkov-type relativistic BWO combining high efficiency with sufficient frequency tunability are presented. A 75 ns X-band pulse from the simulated BWO producing a maximum power of about 800 MW and 5 % frequency modulation can be compressed in a helical waveguide into a pulse of about 2 ns width with 9.3 GW of peak power.

Keywords

Cherenkov counters; backward wave oscillators; helical waveguides; microwave oscillators; plasma simulation; plasma sources; pulse compression; pulse frequency modulation; relativistic plasmas; Cherenkov-type relativistic BWO; X-band pulse; frequency modulated microwave pulse compression; frequency modulated pulse generation; frequency modulation; frequency tunability; helical waveguide; helically corrugated waveguide; microwave sources; multigigawatt RF radiation; time 75 ns; Microwave oscillators; Time frequency analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

High-Power Particle Beams (BEAMS 2004), 2004 International Conference on

Conference_Location

St. Petersburg

Print_ISBN

978-5-87911-088-3

Type

conf

Filename

6220573