A cusp electron gun for millimeter wave gyrodevices

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Abstract

The experimental results of a thermionic cusp electron gun, to drive millimeter and submillimeter wave harmonic gyrodevices, are reported in this paper. Using a "smooth" magnetic field reversal formed by two coils this gun generated an annular-shaped, axis-encircling electron beam with 1.5 A current, and an adjustable velocity ratio alpha of up to 1.56 at a beam voltage of 40 kV. The beam cross-sectional shape and transported beam current were measured by a witness plate technique and Faraday cup, respectively. These measured results were found to be in excellent agreement with the simulated results using the three-dimensional code MAGIC.
LanguageEnglish
Article number141501
Number of pages3
JournalApplied Physics Letters
Volume96
Issue number14
DOIs
Publication statusPublished - 5 Apr 2010

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electron guns
cusps
millimeter waves
thermionics
submillimeter waves
beam currents
coils
electron beams
harmonics
electric potential
magnetic fields

Keywords

  • electron guns
  • gyrotrons
  • millimetre wave devices
  • submillimetre wave devices

Cite this

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title = "A cusp electron gun for millimeter wave gyrodevices",
abstract = "The experimental results of a thermionic cusp electron gun, to drive millimeter and submillimeter wave harmonic gyrodevices, are reported in this paper. Using a {"}smooth{"} magnetic field reversal formed by two coils this gun generated an annular-shaped, axis-encircling electron beam with 1.5 A current, and an adjustable velocity ratio alpha of up to 1.56 at a beam voltage of 40 kV. The beam cross-sectional shape and transported beam current were measured by a witness plate technique and Faraday cup, respectively. These measured results were found to be in excellent agreement with the simulated results using the three-dimensional code MAGIC.",
keywords = "electron guns, gyrotrons, millimetre wave devices, submillimetre wave devices",
author = "Donaldson, {C. R.} and W. He and A.W. Cross and Fengping Li and A.D.R. Phelps and Liang Zhang and Kevin Ronald and Craig Robertson and Colin Whyte and Alan Young",
year = "2010",
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T1 - A cusp electron gun for millimeter wave gyrodevices

AU - Donaldson, C. R.

AU - He, W.

AU - Cross, A.W.

AU - Li, Fengping

AU - Phelps, A.D.R.

AU - Zhang, Liang

AU - Ronald, Kevin

AU - Robertson, Craig

AU - Whyte, Colin

AU - Young, Alan

PY - 2010/4/5

Y1 - 2010/4/5

N2 - The experimental results of a thermionic cusp electron gun, to drive millimeter and submillimeter wave harmonic gyrodevices, are reported in this paper. Using a "smooth" magnetic field reversal formed by two coils this gun generated an annular-shaped, axis-encircling electron beam with 1.5 A current, and an adjustable velocity ratio alpha of up to 1.56 at a beam voltage of 40 kV. The beam cross-sectional shape and transported beam current were measured by a witness plate technique and Faraday cup, respectively. These measured results were found to be in excellent agreement with the simulated results using the three-dimensional code MAGIC.

AB - The experimental results of a thermionic cusp electron gun, to drive millimeter and submillimeter wave harmonic gyrodevices, are reported in this paper. Using a "smooth" magnetic field reversal formed by two coils this gun generated an annular-shaped, axis-encircling electron beam with 1.5 A current, and an adjustable velocity ratio alpha of up to 1.56 at a beam voltage of 40 kV. The beam cross-sectional shape and transported beam current were measured by a witness plate technique and Faraday cup, respectively. These measured results were found to be in excellent agreement with the simulated results using the three-dimensional code MAGIC.

KW - electron guns

KW - gyrotrons

KW - millimetre wave devices

KW - submillimetre wave devices

UR - http://www.aip.org/

U2 - 10.1063/1.3374888

DO - 10.1063/1.3374888

M3 - Article

VL - 96

JO - Applied Physics Letters

T2 - Applied Physics Letters

JF - Applied Physics Letters

SN - 0003-6951

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