Asian Journal of Physics Vol 32, Nos 9 – 12 (2023) 531-538

Design and PIC simulation of a klystron-like RBWO with dual extraction cavity

Pratibha Vermaa, V Venkata Reddya,b and M Thottappana
aCenter of Research in Microwave Tubes (CRMT), Department of Electronics Engineering,
Indian Institute of Technology (BHU), Varanasi-221 005. India.
bDepartment of ECE, Vignan’s Foundation for Science, Technology and Research, Guntur- 522 213, India.
Dedicated to Prof B N Basu

An X-band klystron-like relativistic backward wave oscillator (KL-RBWO) with dual extraction cavities is designed and its performance is studied using a 3-D electromagnetic particle-in-cell code MAGIC. The electrons are slowed down by the strong axial electric field in the extraction cavity region, which results in a highly concentrated energy transfer from the electrons to the RF wave. The PIC simulation predicted a maximum average RF output power of ~1.403 GW at 9.6 GHz for an applied input DC voltage of 580 kV, beam current of ~4.724 kA, and focussing magnetic field of 2.6 T. The power conversion efficiency has been calculated as ~51.2%. © Anita Publications. All rights reserved.
Keywords: KL-RBWO, Dual extraction cavity, FDTD, PIC code, Conversion efficiency.

Peer Review Information
Method: Single- anonymous; Screened for Plagiarism? Yes
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