The design of a 390 GHz gyrotron based on a cusp electron gun

Fengping Li, W. He, A.D.R. Phelps, A.W. Cross, C. R. Donaldson, K. Ronald

Research output: Chapter in Book/Report/Conference proceedingChapter

3 Citations (Scopus)


The design and simulation of a harmonic gyrotron based on a cusp electron gun is presented. The gyrotron is operated at the 7(th) electron cyclotron harmonic with an output frequency of similar to 390 GHz and mode pattern of TE71. A large orbit electron beam with an energy of 40 keV, beam current of 1.5 A and an adjustable pitch alpha from 1 to 3 from a cusp gun is used to drive the beam-wave interaction. Smooth cylindrical waveguide and slotted structures have been studied as interaction cavities. Theoretical analysis and numerical simulation results of these structures will be presented.
Original languageEnglish
Title of host publication33rd International Conference on Infrared, Millimeter and Terahertz Waves, 2008
Place of PublicationNew York
Number of pages2
ISBN (Print)9781424421190
Publication statusPublished - 2008


  • millimeter waves
  • terahertz waves
  • cusp electron gun
  • harmonic gyrotron simulation


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