Design Study of a Metamaterial-Assisted Magnetically Insulated Line Oscillator

In this article, a magnetically insulated line oscillator (MILO) assimilated with metamaterial-based complementary electric split ring resonator (CeSRR) disks is studied to enrich the device efficiency. The beams absent (cold) studies have been accomplished to observe the impact of metamaterial-based CeSRR disks on the electromagnetic (EM) behavior of the MILO. CeSRR disk-loaded radio frequency (RF) interaction structure showed promising interaction impedance compared to the conventional one, improving overall device efficiency. The particle-in-cell (PIC) simulation studies are accomplished to investigate the mechanism of interaction between the electron beam and RF wave and to assure the three phases of operation of MILO as well as to evaluate the high-power enhancement of the proposed MILO. With the input specifications of 460 kV and 62 kA, PIC simulation predicted 10.1 GW of output power at 2.40-GHz frequency during the beam–wave interaction mechanism in the proposed MILO. The peak power conversion efficiency of the proposed MILO is ~35.41%, which is comparatively higher than the conventional MILO.