Abstract
Based on 3D PIC (particle-in-cell) simulations, we conduct a comparative analysis of operation of sub-THz confocal-cavity gyrotrons with two configurations of a driven electron beam namely, a conventional cylindrical hollow electron beam and a sheet rotating electron beam injected midway between the cavity mirrors. It is demonstrated, that for parameters of the experimentally realized 140 GHz confocal gyrotron, the starting and operating current can be significantly decreased with using the sheet rotating electron beam, while the efficiency of generation increases at least in 1.5 times (up to 30-35%). The smooth frequency tuning of 5% by mechanical variation of the distance between mirrors are also demonstrated.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: 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.