Compact, high power and high efficiency relativistic magnetron with L-band all cavity axial extraction

Sha Xu, Lurong Lei, Fen Qin, Dong Wang

Physics of Plasmas · 2018 · 30 citations · 11 references

Concepts

Abstract

To reduce the size and the weight of the relativistic magnetron (RM), a highly compact RM using an all cavity extraction and transparent cathode is investigated. Compared with the traditional RM design [Sayapin et al., IEEE Trans. Plasma Sci. 45(2), 6792062 (2017) and Sayapin and Shlapakovski, J. Appl. Phys. 109(6), 063301 (2011)] this configuration occupies only 0.55λ (radius) * 1.55λ (length). Both simulation and experimental results demonstrate that a microwave power of 508 MW is generated at 1.57 GHz when the input beam voltage is 369 kV and the corresponding efficiency is ∼33%. This provided work paths a way to finally achieve high power, high efficiency, and compact microwave sources.

References

11