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

Research output: Contribution to journalArticle

4 Citations (Scopus)

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.
LanguageEnglish
Article number043120
Number of pages6
JournalPhysics of Plasmas
Volume25
Issue number4
Early online date26 Apr 2018
DOIs
Publication statusE-pub ahead of print - 26 Apr 2018

Fingerprint

triodes
electron guns
cusps
traveling wave amplifiers
electron beams
optimization
cathodes
electrodes
electric potential
simulation

Keywords

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

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",
author = "Liang Zhang and Donaldson, {Craig R.} and Wenlong He",
year = "2018",
month = "4",
day = "26",
doi = "10.1063/1.5028262",
language = "English",
volume = "25",
journal = "Physics of Plasmas",
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}

Optimization of a triode-type cusp electron gun for a W-band gyro-TWA. / Zhang, Liang; Donaldson, Craig R.; He, Wenlong.

In: Physics of Plasmas, Vol. 25, No. 4, 043120, 26.04.2018.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Optimization of a triode-type cusp electron gun for a W-band gyro-TWA

AU - Zhang, Liang

AU - Donaldson, Craig R.

AU - He, Wenlong

PY - 2018/4/26

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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.

KW - gyrotron traveling wave amplifier

KW - triode-type gun

KW - cusp electron gun

KW - large orbit electron beam

KW - cusp magnetic field

U2 - 10.1063/1.5028262

DO - 10.1063/1.5028262

M3 - Article

VL - 25

JO - Physics of Plasmas

T2 - Physics of Plasmas

JF - Physics of Plasmas

SN - 1070-664X

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