Title :
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
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;
Conference_Titel :
High-Power Particle Beams (BEAMS 2004), 2004 International Conference on
Conference_Location :
St. Petersburg
Print_ISBN :
978-5-87911-088-3
