Theory and simulation of an 85 GHz quasioptical gyroklystron experiment

R. P. Fischer; W. M. Manheimer; A. W. Fliflet

doi:10.1007/BF02677941

Theory and simulation of an 85 GHz quasioptical gyroklystron experiment

R. P. Fischer, W. M. Manheimer, A. W. Fliflet

Research output: Contribution to journal › Article › peer-review

Abstract

The linear theory used to design a two-resonator 85 GHz quasioptical gyroklystron with a nonuniform magnetic field is presented. It is shown that a tapered magnetic field in the prebunching resonator has a relatively small effect on the electron bunching parameter. The effect of velocity spread of the electron beam can be minimized by adjusting the magnetic field strength in the two resonators. Measured amplifier performance is in good agreement with calculations from the nonlinear multimode simulation code. Gyrophase bunching of the electrons is preserved over the long drift region (30 radiation wavelengths) even though no attempt has been made to minimize the velocity spread of the beam.

Original language	English (US)
Pages (from-to)	759-778
Number of pages	20
Journal	International Journal of Infrared and Millimeter Waves
Volume	18
Issue number	4
DOIs	https://doi.org/10.1007/BF02677941
State	Published - Apr 1997
Externally published	Yes

Keywords

Amplifier
Gyroklystron
Quasioptical resonators

ASJC Scopus subject areas

Radiation
Atomic and Molecular Physics, and Optics
Instrumentation
Condensed Matter Physics
Physics and Astronomy (miscellaneous)
Electrical and Electronic Engineering

Online availability

10.1007/BF02677941

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title = "Theory and simulation of an 85 GHz quasioptical gyroklystron experiment",

abstract = "The linear theory used to design a two-resonator 85 GHz quasioptical gyroklystron with a nonuniform magnetic field is presented. It is shown that a tapered magnetic field in the prebunching resonator has a relatively small effect on the electron bunching parameter. The effect of velocity spread of the electron beam can be minimized by adjusting the magnetic field strength in the two resonators. Measured amplifier performance is in good agreement with calculations from the nonlinear multimode simulation code. Gyrophase bunching of the electrons is preserved over the long drift region (30 radiation wavelengths) even though no attempt has been made to minimize the velocity spread of the beam.",

keywords = "Amplifier, Gyroklystron, Quasioptical resonators",

author = "Fischer, {R. P.} and Manheimer, {W. M.} and Fliflet, {A. W.}",

note = "Funding Information: The authors thank M. Barsanti and Dr. T. Hargreaves for helpful discussions. This work was supported by the Office of Fusion Energy of the U.S. Department of Energy and by the Office of Naval Research.",

year = "1997",

month = apr,

doi = "10.1007/BF02677941",

language = "English (US)",

volume = "18",

pages = "759--778",

journal = "International Journal of Infrared and Millimeter Waves",

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AU - Fischer, R. P.

AU - Manheimer, W. M.

AU - Fliflet, A. W.

N1 - Funding Information: The authors thank M. Barsanti and Dr. T. Hargreaves for helpful discussions. This work was supported by the Office of Fusion Energy of the U.S. Department of Energy and by the Office of Naval Research.

PY - 1997/4

Y1 - 1997/4

N2 - The linear theory used to design a two-resonator 85 GHz quasioptical gyroklystron with a nonuniform magnetic field is presented. It is shown that a tapered magnetic field in the prebunching resonator has a relatively small effect on the electron bunching parameter. The effect of velocity spread of the electron beam can be minimized by adjusting the magnetic field strength in the two resonators. Measured amplifier performance is in good agreement with calculations from the nonlinear multimode simulation code. Gyrophase bunching of the electrons is preserved over the long drift region (30 radiation wavelengths) even though no attempt has been made to minimize the velocity spread of the beam.

AB - The linear theory used to design a two-resonator 85 GHz quasioptical gyroklystron with a nonuniform magnetic field is presented. It is shown that a tapered magnetic field in the prebunching resonator has a relatively small effect on the electron bunching parameter. The effect of velocity spread of the electron beam can be minimized by adjusting the magnetic field strength in the two resonators. Measured amplifier performance is in good agreement with calculations from the nonlinear multimode simulation code. Gyrophase bunching of the electrons is preserved over the long drift region (30 radiation wavelengths) even though no attempt has been made to minimize the velocity spread of the beam.

KW - Amplifier

KW - Gyroklystron

KW - Quasioptical resonators

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Theory and simulation of an 85 GHz quasioptical gyroklystron experiment

Abstract

Keywords

ASJC Scopus subject areas

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