Gyrotron traveling wave amplifier with a helical interaction waveguide

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

Research output: Contribution to journalArticle

195 Citations (Scopus)

Abstract

A new microwave system in the form of a cylindrical waveguide with a helical corrugation of the inner surface is proposed for a gyrotron traveling wave tube (gyro-TWT). The corrugation radically changes the wave dispersion in the region of small axial wave numbers. This allows significant reduction in the sensitivity of the amplifier to the electron velocity spread and an increase in its frequency bandwidth. An X-band gyro-TWT operating at the second cyclotron harmonic with a 200-keV, 25-A electron beam produced an output power of 1 MW, corresponding to a gain of 23 dB and an efficiency of 20%.

LanguageEnglish
Pages5680-5683
Number of pages4
JournalPhysical Review Letters
Volume81
Issue number25
DOIs
Publication statusPublished - 21 Dec 1998

Fingerprint

traveling wave amplifiers
traveling wave tubes
waveguides
wave dispersion
superhigh frequencies
cyclotrons
amplifiers
interactions
electron beams
bandwidth
harmonics
microwaves
output
sensitivity
electrons

Keywords

  • microwave generation
  • gyro-device
  • gyro-travelling wave amplifier
  • GYRO-TWT
  • gyro-TWA

Cite this

Denisov, G G ; Bratman, V L ; Cross, A W ; He, W ; Phelps, A D R ; Ronald, K ; Samsonov, S V ; Whyte, C G . / Gyrotron traveling wave amplifier with a helical interaction waveguide. In: Physical Review Letters. 1998 ; Vol. 81, No. 25. pp. 5680-5683.
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Gyrotron traveling wave amplifier with a helical interaction waveguide. / Denisov, G G ; Bratman, V L ; Cross, A W ; He, W ; Phelps, A D R ; Ronald, K ; Samsonov, S V ; Whyte, C G .

In: Physical Review Letters, Vol. 81, No. 25, 21.12.1998, p. 5680-5683.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Gyrotron traveling wave amplifier with a helical interaction waveguide

AU - Denisov, G G

AU - Bratman, V L

AU - Cross, A W

AU - He, W

AU - Phelps, A D R

AU - Ronald, K

AU - Samsonov, S V

AU - Whyte, C G

PY - 1998/12/21

Y1 - 1998/12/21

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AB - A new microwave system in the form of a cylindrical waveguide with a helical corrugation of the inner surface is proposed for a gyrotron traveling wave tube (gyro-TWT). The corrugation radically changes the wave dispersion in the region of small axial wave numbers. This allows significant reduction in the sensitivity of the amplifier to the electron velocity spread and an increase in its frequency bandwidth. An X-band gyro-TWT operating at the second cyclotron harmonic with a 200-keV, 25-A electron beam produced an output power of 1 MW, corresponding to a gain of 23 dB and an efficiency of 20%.

KW - microwave generation

KW - gyro-device

KW - gyro-travelling wave amplifier

KW - GYRO-TWT

KW - gyro-TWA

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