Design of a gridded cusp gun for a W-band gyro-TWA

Liang Zhang, Craig R. Donaldson, Adrian W. Cross, Alan D. R. Phelps, Wenlong He

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

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This paper reports the design and optimization of a gridded cusp electron gun for a W-band gyrotron traveling wave amplifier. By applying positive or negative biasing potentials to additional electrodes that are placed in front of the emitter, the electron beam can be switched on and off quickly and easily. In simulations, an optimal velocity ratio (alpha) of 1.12 with an alpha spread of ~10.7% was achieved when the gridded-type gun was operated at a beam voltage of 40 kV and a current of 1.7 A.
Original languageEnglish
Title of host publication2018 43rd International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz)
Place of PublicationPiscataway, NJ.
Number of pages2
ISBN (Electronic)9781538638095
Publication statusPublished - 29 Oct 2018
EventIRMMW-THz 2018 - Nagoya, Japan
Duration: 9 Sept 201814 Sept 2018


ConferenceIRMMW-THz 2018


  • gridded cusp electron gun
  • W-band gyro-TWA
  • electron beam


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