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Enhancing interaction efficiency in traveling-wave devices with multiple beamlets and beam–beam interference.
- Source :
- Physics of Plasmas; Nov2023, Vol. 30 Issue 11, p1-8, 8p
- Publication Year :
- 2023
-
Abstract
- We demonstrate that beam–beam interference can significantly enhance the efficiency of multi-beam traveling-wave devices. Our theoretical analysis explains that a positive coupling of the space-charge field enhances the beam–wave interaction, resulting in increased efficiency in multi-beam devices with beam–beam interference. We validate this mechanism by performing particle-in-cell simulations on 670 GHz grid-loaded rectangular waveguide backward-wave oscillators. Both the multi-beam and single-beam devices exhibit the same dispersion of operating modes and operate under identical conditions. The simulation results indicate that the efficiency of the multi-beam device is up to 1.58 times higher than that of the single-beam device. Additionally, simulations are performed on the same structure at 340 and 1030 GHz, demonstrating efficiency improvements that support the proposed mechanism. These findings present a novel approach for increasing the efficiency of traveling-wave devices. [ABSTRACT FROM AUTHOR]
- Subjects :
- BACKWARD wave oscillators
SPACE charge
DISPERSION (Chemistry)
Subjects
Details
- Language :
- English
- ISSN :
- 1070664X
- Volume :
- 30
- Issue :
- 11
- Database :
- Complementary Index
- Journal :
- Physics of Plasmas
- Publication Type :
- Academic Journal
- Accession number :
- 173977608
- Full Text :
- https://doi.org/10.1063/5.0171899