Design of a triodelike electron gun for millimeter-wave gyrodevices

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A computational study has been made on the design of a 150-kV triodelike switchable electron gun. A smooth magnetic cusp arrangement was used to produce an axis-encircling
beam. Numerical optimization of this arrangement led to a gun design that produced beam parameters of Ib ∼ 6 A, α = 1.2, and dα ∼ 15%. It has also been shown that this triode design can produce beam suppression at ∼2 kV while not interfering with the beam parameters under operation conditions.
Original languageEnglish
Pages (from-to)2520 - 2523
Number of pages4
JournalIEEE Transactions on Electron Devices
Issue number9
Publication statusPublished - Sep 2012


  • numerical modeling
  • device modeling
  • electron beam devices
  • gyrotrons
  • high-power microwaves
  • millimeter waves


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