Abstract
A new configuration of a virtual cathode oscillator (VCO) has been studied for high-power microwave generation. In this VCO configuration, a resonant cavity is used to enhance the beam-field interaction in order to improve the microwave efficiency. Experiments were carried out on a repetitive pulsed power generator "ETIGO-IV" (400 kV, 13 kA, 120 ns, 1 Hz). The output microwaves are diagnosed for peak power and dominant mode by using horn antennas and E-field probes. The microwave frequency is obtained by fast-Fourier transformation of the signal recorded by a high-speed digital oscilloscope. The initial experimental results obtained by E-field probes have indicated a beam-to-microwave conversion efficiency of /spl sim/10%. In addition, three-dimensional particle-in-cell simulations were carried out by using simulation code "MAGIC". Simulation results are compared with experimental results to examine the effect of the cavity and possible ways of further improvement of microwave efficiency.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
