Search Results - "Whyte, Colin G."

Sub-THz and THz Cherenkov radiation source with two-dimensional periodic surface lattice and multistage depressed collector by MacLachlan, Amy J., Zhang, Liang, Konoplev, Ivan V., Phelps, Alan D. R., Robertson, Craig W., MacInnes, Philip, Whyte, Colin G., Ronald, Kevin, Cross, Adrian W., Henderson, Mark A.

“…We present the theory, concept and design of an efficient, megawatt coherent Cherenkov radiation source based on a two-dimensional periodic surface lattice…”
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Beam dynamic study of a Ka-band microwave undulator and its potential drive sources by Zhang, Liang, Donaldson, Craig R., Clarke, Jim, Easton, Jack, Robertson, Craig W., Whyte, Colin G., Cross, Adrian W.

“…Microwave undulators (MUs) have great potential to be an alternative solution to permanent magnet undulators in a free electron laser (FEL) when shorter…”
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Feedhorn synthesis using a parameterized aperture field distribution by Zhang, Liang, Whyte, Colin G., Donaldson, Craig R., Ronald, Kevin, Cross, Adrian W.

“…In this paper, we present an improved method for synthesizing smooth-profiled horns. A direct connection between the mode compositions and far-field parameters…”
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Dispersion Curve of the Helically Corrugated Waveguide Based on Helicoidal Coordinate Transform by Zhang, Liang, Easton, Jack, Donaldson, Craig R., Whyte, Colin G., Cross, Adrian W.

“…This article presents the dispersion curve study of the helically corrugated waveguide (HCW) using the 2-D finite element method (FEM) method based on the…”
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Low-Loss Transmission Line for a 3.4-kW, 93-GHz Gyro-Traveling-Wave Amplifier by Donaldson, Craig R., Zhang, Liang, He, Wenlong, Cross, Adrian W., Ronald, Kevin, Whyte, Colin G.

“…In this article, a transmission line system for the propagation of millimeter-wave radiation is presented. The full system includes a TE 11 -to-TE 01 mode…”
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Fivefold Helically Corrugated Waveguide for High-Power W-Band Gyro-Devices and Pulse Compression by Donaldson, Craig R., Zhang, Liang, Hiscock, Peter, Harris, Michael, Beardsley, Matthew J., Huggard, Peter G., Whyte, Colin G., Cross, Adrian W., He, Wenlong

“…The design, simulation, manufacture, and measurement of a <inline-formula> <tex-math notation="LaTeX">{W} </tex-math></inline-formula>-band fivefold (5F)…”
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8-Fold Helically Corrugated Interaction Region for High Power Gyroresonant THz Sources by Donaldson, Craig R., Zhang, Liang, Harris, Michael, Beardsley, Matthew J., Huggard, Peter G., Whyte, Colin G., Cross, Adrian W., He, Wenlong

“…A manufacturing study of a 0.372 THz 8-fold (8F) helically corrugated interaction region (HCIR) and measurement of its wave dispersion characteristics are…”
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Numerical Analysis of High-Power X-Band Sources, at Low Magnetic Confinement, for Use in a Multisource Array by Macinnes, Philip, Donaldson, Craig R., Whyte, Colin G., MacLachlan, Amy J., Ronald, Kevin, Phelps, Alan D. R., Cross, Adrian W.

“…High-power microwave sources are typically relativistic in nature, employing multi-kilo-ampere electron beams that require significant magnetic confinement for…”
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Numerical and Experimental Validation of the Passive Performance of a Coharmonic Gyro-Multiplier Interaction Region by Constable, David A., Phelps, Alan D. R., Whyte, Colin G., He, Wenlong, Cross, Adrian W., Ronald, Kevin

“…The azimuthally rippled cavity for a large-orbit, coharmonic gyro-multiplier, designed to operate at the second and fourth harmonics, at frequencies of 37.5…”
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Multi-Mode Coupling Wave Theory for Helically Corrugated Waveguide by Liang Zhang, Wenlong He, Ronald, K., Phelps, A. D. R., Whyte, C. G., Robertson, C. W., Young, A. R., Donaldson, C. R., Cross, A. W.

“…Helically corrugated waveguide has been used in various applications such as gyro-backward wave oscillators, gyro-traveling wave amplifier and microwave pulse…”
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Design of Planar Millimeter-Wave Metallic Structures for Wakefield Acceleration by Zhang, Liang, He, Wenlong, Jamison, Steven, Whyte, Colin G., Ronald, Kevin, Phelps, Alan D. R., Cross, Adrian W.

“…Linear accelerators operating at millimeter or sub-terahertz frequencies and short pulse duration have the advantages of lower power consumption and high…”
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Phase Locked High Power X-band Microwave Sources by MacInnes, Philip, Donaldson, Craig R., MacLachlan, Amy J., Whyte, Colin G., Ronald, K., Phelps, Alan D. R., Cross, Adrian W.

“…The numerical study of a low confining-field (~0.3T) X-band Backward Wave Oscillator (BWO), suitable for implementation as the microwave source(s) in a…”
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Design and Numerical Optimization of a Cusp-Gun-Based Electron Beam for Millimeter-Wave Gyro-Devices by Donaldson, C.R., Wenlong He, Cross, A.W., Phelps, A.D.R., Fengping Li, Ronald, K., Robertson, C.W., Whyte, C.G., Young, A.R., Liang Zhang

“…A novel thermionic cusp electron gun operating in the temperature-limited regime that produces a large-orbit electron beam through a nonadiabatic…”
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Design of an Energy Recovery System for a Gyrotron Backward-Wave Oscillator by Liang Zhang, Wenlong He, Cross, A.W., Phelps, A., Ronald, K., Whyte, C.G.

“…To realize the full potential of a gyrotron backward-wave oscillator (gyro-BWO), an energy recovery system was designed using Particle-In-Cell (PIC)…”
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Numerical Optimization of a Multistage Depressed Collector With Secondary Electron Emission for an X-band Gyro-BWO by Liang Zhang, Wenlong He, Cross, A.W., Phelps, A.D.R., Ronald, K., Whyte, C.G.

“…A three-stage depressed collector was previously designed and simulated to recover the kinetic energy of the spent electron beam in an X-band gyrotron backward…”
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Helically corrugated interaction regions for W-band gyrotron-Traveling Wave Amplifiers by Donaldson, Craig R., Zhang, Liang, Robertson, Craig W., MacInnes, Philip, Whyte, Colin G.

“…The helically corrugated interaction region (HCIR) is able to produce an almost ideal dispersion for microwave oscillators/amplifiers. The HCIR is studied and…”
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Status and Ongoing Development of a kW-level Broadband W-band Gyro-TWA by Zhang, Liang, Donaldson, Craig R., Whyte, Colin G., Cross, Adrian W.

“…A broadband, kW-level gyrotron traveling wave amplifier (gyro-TWA) in W-band was developed based on a helically corrugated interaction region and a cusp…”
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High-Current Electron Beams for High-Power Free-Electron Masers Based on Two-Dimensional Periodic Lattices by Konoplev, Ivan V, MacInnes, Philip, Cross, Adrian W, Fisher, Lorna, Phelps, Alan, Wenlong He, Ronald, Kevin, Whyte, Colin G, Robertson, Craig W

“…High-power gigawatt-level radiation can be generated by the interaction of an electromagnetic wave and an annular electron beam with a transverse dimension…”
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Production of Powerful Spatially Coherent Radiation in Planar and Coaxial FEM Exploiting Two-Dimensional Distributed Feedback by Arzhannikov, A.V., Cross, A.W., Ginzburg, N.S., Wenlong He, Kalinin, P.V., Konoplev, I.V., Kuznetsov, S.A., Peskov, N.Yu, Phelps, A., Robertson, C.W., Ronald, K., Sergeev, A.S., Sinitsky, S.L., Stepanov, V.D., Thumm, M., Whyte, C.G., Zaslavsky, V.Yu

“…Two-dimensional distributed feedback is an effective method of producing ultrahigh-power spatially coherent radiation from an active medium, that is spatially…”
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Microwave Undulator to Generate Short-wavelength FEL Radiation by Zhang, Liang, Donaldson, Craig R., Robertson, Craig W., Whyte, Colin G., Cross, Adrian W., Clarke, Jim

“…This paper presents the design and the measurement of a short section of a 36 GHz microwave undulator, as well as the electron beam dynamic and the spectrum of…”
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