High-gain wide-band gyrotron traveling wave amplifier with a helically corrugated waveguide

V L Bratman, A W Cross, G G Denisov, W He, A D R Phelps, K Ronald, S V Samsonov, C G Whyte, A R Young

Research output: Contribution to journalArticle

178 Citations (Scopus)

Abstract

First bandwidth measurements of a novel gyrotron amplifier are presented. The coupling between the second harmonic cyclotron mode of a gyrating electron beam and the radiation field occurred in the region of near infinite phase velocity over a broad bandwidth by using a cylindrical waveguide with a helical corrugation on its internal surface. With a beam energy of 185 keV, the amplifier achieved a a maximum output power of 1.1 MW, saturated gain of 37 dB, linear gain of 37 dB, saturated bandwidth of 8.4 to 10.4 GHz (21% relative bandwidth), and an efficiency of 29%, in good agreement with theory.

LanguageEnglish
Pages2746-2749
Number of pages4
JournalPhysical Review Letters
Volume84
Issue number12
DOIs
Publication statusPublished - 20 Mar 2000

Fingerprint

traveling wave amplifiers
corrugated waveguides
high gain
broadband
bandwidth
amplifiers
phase velocity
radiation distribution
cyclotrons
electron beams
waveguides
harmonics
output
energy

Keywords

  • electron cyclotron maser
  • tube amplifier
  • twt amplifier
  • microwave amplifier
  • microwave devices
  • microwave generation
  • gyro-devices
  • gyro-TWA
  • gyro-travelling wave amplifier

Cite this

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title = "High-gain wide-band gyrotron traveling wave amplifier with a helically corrugated waveguide",
abstract = "First bandwidth measurements of a novel gyrotron amplifier are presented. The coupling between the second harmonic cyclotron mode of a gyrating electron beam and the radiation field occurred in the region of near infinite phase velocity over a broad bandwidth by using a cylindrical waveguide with a helical corrugation on its internal surface. With a beam energy of 185 keV, the amplifier achieved a a maximum output power of 1.1 MW, saturated gain of 37 dB, linear gain of 37 dB, saturated bandwidth of 8.4 to 10.4 GHz (21{\%} relative bandwidth), and an efficiency of 29{\%}, in good agreement with theory.",
keywords = "electron cyclotron maser, tube amplifier, twt amplifier, microwave amplifier, microwave devices, microwave generation, gyro-devices, gyro-TWA, gyro-travelling wave amplifier",
author = "Bratman, {V L} and Cross, {A W} and Denisov, {G G} and W He and Phelps, {A D R} and K Ronald and Samsonov, {S V} and Whyte, {C G} and Young, {A R}",
year = "2000",
month = "3",
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doi = "10.1103/PhysRevLett.84.2746",
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volume = "84",
pages = "2746--2749",
journal = "Physical Review Letters",
issn = "0031-9007",
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High-gain wide-band gyrotron traveling wave amplifier with a helically corrugated waveguide. / Bratman, V L ; Cross, A W ; Denisov, G G ; He, W ; Phelps, A D R ; Ronald, K ; Samsonov, S V ; Whyte, C G ; Young, A R .

In: Physical Review Letters, Vol. 84, No. 12, 20.03.2000, p. 2746-2749.

Research output: Contribution to journalArticle

TY - JOUR

T1 - High-gain wide-band gyrotron traveling wave amplifier with a helically corrugated waveguide

AU - Bratman, V L

AU - Cross, A W

AU - Denisov, G G

AU - He, W

AU - Phelps, A D R

AU - Ronald, K

AU - Samsonov, S V

AU - Whyte, C G

AU - Young, A R

PY - 2000/3/20

Y1 - 2000/3/20

N2 - First bandwidth measurements of a novel gyrotron amplifier are presented. The coupling between the second harmonic cyclotron mode of a gyrating electron beam and the radiation field occurred in the region of near infinite phase velocity over a broad bandwidth by using a cylindrical waveguide with a helical corrugation on its internal surface. With a beam energy of 185 keV, the amplifier achieved a a maximum output power of 1.1 MW, saturated gain of 37 dB, linear gain of 37 dB, saturated bandwidth of 8.4 to 10.4 GHz (21% relative bandwidth), and an efficiency of 29%, in good agreement with theory.

AB - First bandwidth measurements of a novel gyrotron amplifier are presented. The coupling between the second harmonic cyclotron mode of a gyrating electron beam and the radiation field occurred in the region of near infinite phase velocity over a broad bandwidth by using a cylindrical waveguide with a helical corrugation on its internal surface. With a beam energy of 185 keV, the amplifier achieved a a maximum output power of 1.1 MW, saturated gain of 37 dB, linear gain of 37 dB, saturated bandwidth of 8.4 to 10.4 GHz (21% relative bandwidth), and an efficiency of 29%, in good agreement with theory.

KW - electron cyclotron maser

KW - tube amplifier

KW - twt amplifier

KW - microwave amplifier

KW - microwave devices

KW - microwave generation

KW - gyro-devices

KW - gyro-TWA

KW - gyro-travelling wave amplifier

U2 - 10.1103/PhysRevLett.84.2746

DO - 10.1103/PhysRevLett.84.2746

M3 - Article

VL - 84

SP - 2746

EP - 2749

JO - Physical Review Letters

T2 - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

IS - 12

ER -