Helically corrugated waveguide gyrotron traveling wave amplifier using a thermionic cathode electron gun

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Abstract

Experimental operation of a gyrotron traveling wave amplifier with a helically corrugated waveguide using a thermionic cathode electron gun is presented. The coupling between the second harmonic cyclotron mode of the gyrating electron beam and the radiation occurred in the region of near infinite phase velocity over a broad frequency band. With an axis-encircling electron beam of pitch factor of ∼ 1.2, energy of 185 keV, and current of 6.0 A, the amplifier achieved an output power of 220 kW, saturated gain of 24 dB, saturated bandwidth of 8.4 to 10.4 GHz, and an interaction efficiency of 20%.
LanguageEnglish
Pages253501
JournalApplied Physics Letters
Volume90
Issue number25
DOIs
Publication statusPublished - 18 Jun 2007

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traveling wave amplifiers
thermionic cathodes
corrugated waveguides
electron guns
electron beams
phase velocity
cyclotrons
amplifiers
bandwidth
harmonics
output
radiation
interactions
energy

Keywords

  • gyrotron traveling wave amplifier
  • helically corrugatedwaveguide
  • thermionic cathode electron gun
  • harmonic cyclotron mode

Cite this

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title = "Helically corrugated waveguide gyrotron traveling wave amplifier using a thermionic cathode electron gun",
abstract = "Experimental operation of a gyrotron traveling wave amplifier with a helically corrugated waveguide using a thermionic cathode electron gun is presented. The coupling between the second harmonic cyclotron mode of the gyrating electron beam and the radiation occurred in the region of near infinite phase velocity over a broad frequency band. With an axis-encircling electron beam of pitch factor of ∼ 1.2, energy of 185 keV, and current of 6.0 A, the amplifier achieved an output power of 220 kW, saturated gain of 24 dB, saturated bandwidth of 8.4 to 10.4 GHz, and an interaction efficiency of 20{\%}.",
keywords = "gyrotron traveling wave amplifier, helically corrugatedwaveguide, thermionic cathode electron gun, harmonic cyclotron mode",
author = "A.W. Cross and W. He and A.D.R. Phelps and K. Ronald and C.G. Whyte and A.R. Young and Craig Robertson and E.G. Rafferty",
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year = "2007",
month = "6",
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doi = "10.1063/1.2749425",
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TY - JOUR

T1 - Helically corrugated waveguide gyrotron traveling wave amplifier using a thermionic cathode electron gun

AU - Cross, A.W.

AU - He, W.

AU - Phelps, A.D.R.

AU - Ronald, K.

AU - Whyte, C.G.

AU - Young, A.R.

AU - Robertson, Craig

AU - Rafferty, E.G.

N1 - Strathprints' policy is to record up to 8 authors per publication, plus any additional authors based at the University of Strathclyde. More authors may be listed on the official publication than appear in the Strathprints' record.

PY - 2007/6/18

Y1 - 2007/6/18

N2 - Experimental operation of a gyrotron traveling wave amplifier with a helically corrugated waveguide using a thermionic cathode electron gun is presented. The coupling between the second harmonic cyclotron mode of the gyrating electron beam and the radiation occurred in the region of near infinite phase velocity over a broad frequency band. With an axis-encircling electron beam of pitch factor of ∼ 1.2, energy of 185 keV, and current of 6.0 A, the amplifier achieved an output power of 220 kW, saturated gain of 24 dB, saturated bandwidth of 8.4 to 10.4 GHz, and an interaction efficiency of 20%.

AB - Experimental operation of a gyrotron traveling wave amplifier with a helically corrugated waveguide using a thermionic cathode electron gun is presented. The coupling between the second harmonic cyclotron mode of the gyrating electron beam and the radiation occurred in the region of near infinite phase velocity over a broad frequency band. With an axis-encircling electron beam of pitch factor of ∼ 1.2, energy of 185 keV, and current of 6.0 A, the amplifier achieved an output power of 220 kW, saturated gain of 24 dB, saturated bandwidth of 8.4 to 10.4 GHz, and an interaction efficiency of 20%.

KW - gyrotron traveling wave amplifier

KW - helically corrugatedwaveguide

KW - thermionic cathode electron gun

KW - harmonic cyclotron mode

UR - http://dx.doi.org/10.1063/1.2749425

U2 - 10.1063/1.2749425

DO - 10.1063/1.2749425

M3 - Article

VL - 90

SP - 253501

JO - Applied Physics Letters

T2 - Applied Physics Letters

JF - Applied Physics Letters

SN - 0003-6951

IS - 25

ER -