Optimization of a triode-type cusp electron gun for a W-band gyro-TWA

Liang Zhang; Craig R. Donaldson; Wenlong He

doi:10.1063/1.5028262

Optimization of a triode-type cusp electron gun for a W-band gyro-TWA

Liang Zhang, Craig R. Donaldson, Wenlong He

Research output: Contribution to journal › Article › peer-review

19 Citations (Scopus)

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Abstract

A triode-type cusp electron gun was optimized through numerical simulations for a W-band gyrotron traveling wave amplifier. An additional electrode in front of the cathode could switch the electron beam on and off instantly when its electric potential is properly biased. An optimal electron beam of current 1.7 A and velocity ratio (alpha) of 1.12 with an alpha spread of ~10.7% was achieved when the triode gun was operated at 40 kV.

Original language	English
Article number	043120
Number of pages	6
Journal	Physics of Plasmas
Volume	25
Issue number	4
Early online date	26 Apr 2018
DOIs	https://doi.org/10.1063/1.5028262
Publication status	E-pub ahead of print - 26 Apr 2018

Keywords

gyrotron traveling wave amplifier
triode-type gun
cusp electron gun
large orbit electron beam
cusp magnetic field

Access to Document

10.1063/1.5028262

Zhang-etal-POP-2018-Optimization-of-a-triode-type-cusp-electron-gunAccepted author manuscript, 1.59 MB

CW operation of 94GHz Gyro-TWA for telecommunications applications (IPS Proposal%)
Cross, A. (Principal Investigator), He, W. (Co-investigator), Whyte, C. (Co-investigator) & Zhang, L. (Research Co-investigator)
STFC Science and Technology Facilities Council
1/02/17 → 31/01/20
Project: Research

Cite this

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title = "Optimization of a triode-type cusp electron gun for a W-band gyro-TWA",

abstract = "A triode-type cusp electron gun was optimized through numerical simulations for a W-band gyrotron traveling wave amplifier. An additional electrode in front of the cathode could switch the electron beam on and off instantly when its electric potential is properly biased. An optimal electron beam of current 1.7 A and velocity ratio (alpha) of 1.12 with an alpha spread of ~10.7% was achieved when the triode gun was operated at 40 kV.",

keywords = "gyrotron traveling wave amplifier, triode-type gun, cusp electron gun, large orbit electron beam, cusp magnetic field",

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N2 - A triode-type cusp electron gun was optimized through numerical simulations for a W-band gyrotron traveling wave amplifier. An additional electrode in front of the cathode could switch the electron beam on and off instantly when its electric potential is properly biased. An optimal electron beam of current 1.7 A and velocity ratio (alpha) of 1.12 with an alpha spread of ~10.7% was achieved when the triode gun was operated at 40 kV.

AB - A triode-type cusp electron gun was optimized through numerical simulations for a W-band gyrotron traveling wave amplifier. An additional electrode in front of the cathode could switch the electron beam on and off instantly when its electric potential is properly biased. An optimal electron beam of current 1.7 A and velocity ratio (alpha) of 1.12 with an alpha spread of ~10.7% was achieved when the triode gun was operated at 40 kV.

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KW - triode-type gun

KW - cusp electron gun

KW - large orbit electron beam

KW - cusp magnetic field

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DO - 10.1063/1.5028262

M3 - Article

SN - 1070-664X

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JF - Physics of Plasmas

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Optimization of a triode-type cusp electron gun for a W-band gyro-TWA

Abstract

Keywords

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Projects

CW operation of 94GHz Gyro-TWA for telecommunications applications (IPS Proposal%)

Cite this