Numerical Assessment of Secondary Electron Emission on the Performance of Rising-Sun Magnetrons with Axial Output

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Abstract

Particle-in-cell simulations are performed to analyze the role of secondary electron emission (SEE) on the efficiency, the output power and the leakage currents of 12-cavity, 12-cathode Rising-Sun magnetrons with diffraction output. The simulation results seem to indicate that the role of SEE would be fairly negligible. Small changes are predicted, linked to deviations in the starting trajectories of secondary electrons following their generation and the lower fraction of electrons in clusters with a synchronized rotational velocity. Overall, a peak power output of about 2.48 GW is predicted at a magnetic field of 0.45 T, with efficiencies as high as 75%. Furthermore, deviations in the output power with SEE are predicted to occur at shorter times, but would not be an issue for pulses greater than 25 ns in duration.

Original languageEnglish
Pages (from-to)2272-2277
Number of pages6
JournalIEEE Transactions on Plasma Science
Volume44
Issue number10
DOIs
StatePublished - Oct 2016

Keywords

  • Particle-in-cell (PIC)
  • Rising-Sun geometry
  • relativistic magnetron (RM)
  • secondary electron emission (SEE)
  • simulation study

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