Enhanced efficiency of C‐band sheet beam driven backward wave oscillator guided by periodic magnetic field

Enhanced efficiency of C‐band sheet beam driven backward wave oscillator guided by periodic magnetic field

In this article we present the effect of periodic magnetic field on the efficiency of a sheet beam driven C‐band backward wave oscillator (operational in Megawatt power regime) through MAGIC3D PIC simulation. At 90 kV beam energy, 200 A beam current, and 0.6 T average magnetic field, our results dep...

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Veröffentlicht in:Microwave and optical technology letters 2021-02, Vol.63 (2), p.459-465
Hauptverfasser: Banerjee, Tusharika S., Hadap, Arti, Saxena, Ayush, Reddy, K. T. V.
Format: Artikel
Sprache:eng
Schlagworte:
Backward waves
beam confinement
beam‐wave interaction
C band
Efficiency
Electron beams
Electron bunching
Electrons
high power microwave generation
Magnetic fields
Magnetism
microwave devices
particle accelerators
sheet electron beam
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Zusammenfassung:In this article we present the effect of periodic magnetic field on the efficiency of a sheet beam driven C‐band backward wave oscillator (operational in Megawatt power regime) through MAGIC3D PIC simulation. At 90 kV beam energy, 200 A beam current, and 0.6 T average magnetic field, our results depict an efficiency of nearly 70% due to improved electron beam confinement and electron bunching. A qualitative comparison is shown for efficiency through the same slow wave structure, guided by a uniform axial magnetic and the proposed periodic magnetic field. Efficiency enhancement of nearly 20% is observed in case of periodic magnetic field.
ISSN:0895-2477
1098-2760
DOI:10.1002/mop.32634