W-band Gyro-BWO using a helically corrugated waveguide

C. R. Donaldson; W. He; A. D. R. Phelps; F. Li; A. W. Cross; K. Ronald; A. R. Young; C. G. Whyte

doi:10.1109/IVELEC.2008.4556433

W-band Gyro-BWO using a helically corrugated waveguide

C. R. Donaldson, W. He, A. D. R. Phelps, F. Li, A. W. Cross, K. Ronald, A. R. Young, C. G. Whyte

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution book

1 Citation (Scopus)

Abstract

Presented in this paper is the design of a W-Band Gyro-BWO with a helically corrugated waveguide and a cusp electron gun. The interaction region has been constructed with good accuracy and microwave results measured using a vector network analyzer are given. The microwave dispersion agrees well with analytical and numerical theory. The transmission loss of this helically corrugated waveguide was measured to be ~1dB over the frequency range (84 - 104GHz). A cusp electron gun has been designed to generate a 1.5A, 40kV electron beam with an adjustable pitch angle (α) of up to 3. The beam was optimized through numerical simulation with an axial velocity spread, ΔV z /V z , of 7% and Δα/α, of 10.4% at α=1.65. From simulation of the beam-wave interaction the maximum output power from the Gyro-BWO was predicted to be 10kW (CW) at 17% efficiency, with a 3dB frequency tuning range of ~84-104GHz.

Original language	English
Title of host publication	2008 17th International Conference on High Power Particle Beams (BEAMS)
Place of Publication	Piscataway, NJ
Publisher	IEEE
DOIs	https://doi.org/10.1109/IVELEC.2008.4556433
Publication status	Published - 21 May 2012

Keywords

design automation
current measurement
heating
coils
cathodes
numerical simulation

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10.1109/IVELEC.2008.4556433

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@inproceedings{3e183b7e812646b0831fe96a426e92b9,

title = "W-band Gyro-BWO using a helically corrugated waveguide",

abstract = "Presented in this paper is the design of a W-Band Gyro-BWO with a helically corrugated waveguide and a cusp electron gun. The interaction region has been constructed with good accuracy and microwave results measured using a vector network analyzer are given. The microwave dispersion agrees well with analytical and numerical theory. The transmission loss of this helically corrugated waveguide was measured to be ~1dB over the frequency range (84 - 104GHz). A cusp electron gun has been designed to generate a 1.5A, 40kV electron beam with an adjustable pitch angle (α) of up to 3. The beam was optimized through numerical simulation with an axial velocity spread, ΔV z /V z , of 7% and Δα/α, of 10.4% at α=1.65. From simulation of the beam-wave interaction the maximum output power from the Gyro-BWO was predicted to be 10kW (CW) at 17% efficiency, with a 3dB frequency tuning range of ~84-104GHz.",

keywords = "design automation, current measurement, heating, coils, cathodes, numerical simulation",

author = "Donaldson, {C. R.} and W. He and Phelps, {A. D. R.} and F. Li and Cross, {A. W.} and K. Ronald and Young, {A. R.} and Whyte, {C. G.}",

year = "2012",

month = may,

day = "21",

doi = "10.1109/IVELEC.2008.4556433",

language = "English",

booktitle = "2008 17th International Conference on High Power Particle Beams (BEAMS)",

publisher = "IEEE",

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T1 - W-band Gyro-BWO using a helically corrugated waveguide

AU - Donaldson, C. R.

AU - He, W.

AU - Phelps, A. D. R.

AU - Li, F.

AU - Cross, A. W.

AU - Ronald, K.

AU - Young, A. R.

AU - Whyte, C. G.

PY - 2012/5/21

Y1 - 2012/5/21

N2 - Presented in this paper is the design of a W-Band Gyro-BWO with a helically corrugated waveguide and a cusp electron gun. The interaction region has been constructed with good accuracy and microwave results measured using a vector network analyzer are given. The microwave dispersion agrees well with analytical and numerical theory. The transmission loss of this helically corrugated waveguide was measured to be ~1dB over the frequency range (84 - 104GHz). A cusp electron gun has been designed to generate a 1.5A, 40kV electron beam with an adjustable pitch angle (α) of up to 3. The beam was optimized through numerical simulation with an axial velocity spread, ΔV z /V z , of 7% and Δα/α, of 10.4% at α=1.65. From simulation of the beam-wave interaction the maximum output power from the Gyro-BWO was predicted to be 10kW (CW) at 17% efficiency, with a 3dB frequency tuning range of ~84-104GHz.

AB - Presented in this paper is the design of a W-Band Gyro-BWO with a helically corrugated waveguide and a cusp electron gun. The interaction region has been constructed with good accuracy and microwave results measured using a vector network analyzer are given. The microwave dispersion agrees well with analytical and numerical theory. The transmission loss of this helically corrugated waveguide was measured to be ~1dB over the frequency range (84 - 104GHz). A cusp electron gun has been designed to generate a 1.5A, 40kV electron beam with an adjustable pitch angle (α) of up to 3. The beam was optimized through numerical simulation with an axial velocity spread, ΔV z /V z , of 7% and Δα/α, of 10.4% at α=1.65. From simulation of the beam-wave interaction the maximum output power from the Gyro-BWO was predicted to be 10kW (CW) at 17% efficiency, with a 3dB frequency tuning range of ~84-104GHz.

KW - design automation

KW - current measurement

KW - heating

KW - coils

KW - cathodes

KW - numerical simulation

U2 - 10.1109/IVELEC.2008.4556433

DO - 10.1109/IVELEC.2008.4556433

M3 - Conference contribution book

BT - 2008 17th International Conference on High Power Particle Beams (BEAMS)

PB - IEEE

CY - Piscataway, NJ

ER -

W-band Gyro-BWO using a helically corrugated waveguide

Abstract

Keywords

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