Theory and simulations of a gyrotron backward wave oscillator using a helical interaction waveguide

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A gyrotron backward wave oscillator (gyro-BWO) with a helically corrugated interaction waveguide demonstrated its potential as a powerful microwave source with high efficiency and a wide frequency tuning range. This letter presents the theory describing the dispersion properties of such a waveguide and the linear beam-wave interaction. Numerical simulation results using the PIC code MAGIC were found to be in excellent agreement with the output measured from a gyro-BWO experiment.
Original languageEnglish
Article number091504
Number of pages3
JournalApplied Physics Letters
Issue number9
Early online date1 Sep 2006
Publication statusPublished - 2006


  • gyrotron backward wave oscillator
  • helical interaction waveguide

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