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

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Abstract

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.
PublisherIEEE
Number of pages2
ISBN (Electronic)9781538638095
DOIs
Publication statusPublished - 29 Oct 2018
EventIRMMW-THz 2018 - Nagoya, Japan
Duration: 9 Sep 201814 Sep 2018

Conference

ConferenceIRMMW-THz 2018
CountryJapan
CityNagoya
Period9/09/1814/09/18

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Keywords

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

Cite this

Zhang, L., Donaldson, C. R., Cross, A. W., Phelps, A. D. R., & He, W. (2018). Design of a gridded cusp gun for a W-band gyro-TWA. In 2018 43rd International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz) [8510209] Piscataway, NJ.: IEEE. https://doi.org/10.1109/IRMMW-THz.2018.8510209