Search Results - "Robertson, Craig W."

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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Simulation and Experiments of a W -Band Extended Interaction Oscillator Based on a Pseudospark-Sourced Electron Beam by Yong Yin, Wenlong He, Liang Zhang, Huabi Yin, Robertson, Craig W., Cross, Adrian W.

“…This paper presents the first experimental results of an extended interaction oscillator (EIO) based on a pseudospark-sourced electron beam, which produced a…”
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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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Concept and Modeling of an Efficient, High Power, 0.35 THZ Source by MacLachlan, Amy J., Robertson, Craig W., Cross, Adrian W., Phelps, Alan D. R.

“…High power, efficient THz sources have applications in wireless communications, radar, non-destructive testing, environmental sensing, THz spectroscopy,…”
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Overmoded, High-Power 0.2 THz Radiation Source based on a Cylindrical 2D Periodic Surface Lattice Cavity by MacLachlan, Amy J., Robertson, Craig W., Cross, Adrian W., Ronald, Kevin, Phelps, Alan D.R.

“…We present the theoretical and numerical study of a cylindrical two-dimensional periodic surface lattice (2D PSL) overmoded interaction cavity, excited by 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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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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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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Powerful radiation source at 0.35 THz based on overmoded, periodic cavities by MacLachlan, Amy J., Robertson, Craig W., Cross, Adrian W., Ronald, Kevin, Phelps, Alan D. R.

“…We present the design of a cylindrical, two-dimensional periodic surface lattice structure intended for use as the interaction region of an electron beam…”
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Progress on a 71-76 GHz TWT by Robertson, Craig W., Cross, Adrian W., Gilmour, Christopher, Dyson, David, Huggard, Peter G., Cahill, Fiachra, Beardsley, Mat, Harris, Michael, Dionisio, Roberto, Ronald, Kevin

“…To address application requirements in satellite communications, a 71-76 GHz TWT has been designed based on a folded waveguide. Numerical simulations have…”
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Powerful, over-moded 0.14 THz radiation source by MacLachlan, Amy J., Robertson, Craig W., Cross, Adrian W., Ronald, Kevin, Phelps, Alan D.R.

“…In this paper we present the design of a complex two-dimensional cylindrical surface structure for use within a 0.14 THz radiation source. This frequency range…”
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Simulation and Experiments of a [Formula Omitted]-Band Extended Interaction Oscillator Based on a Pseudospark-Sourced Electron Beam by Yin, Yong, He, Wenlong, Zhang, Liang, Yin, Huabi, Robertson, Craig W, Cross, Adrian W

“…This paper presents the first experimental results of an extended interaction oscillator (EIO) based on a pseudospark-sourced electron beam, which produced a…”
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Experimental Study of Microwave Pulse Compression Using a Five-Fold Helically Corrugated Waveguide by Liang Zhang, Mishakin, Sergey V., Wenlong He, Samsonov, Sergey V., McStravick, Michael, Denisov, Gregory G., Cross, Adrian W., Bratman, Vladimir L., Whyte, Colin G., Robertson, Craig W., Young, Alan R., Ronald, Kevin, Phelps, Alan D. R.

“…This paper presents the experimental study of microwave pulse compression using a five-fold helically corrugated waveguide. In the experiment, the maximum…”
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Design and experiments of a five-fold helically corrugated waveguide for microwave pulse compression by Liang Zhang, Mishakin, Sergey V., Wenlong He, Samsonov, Sergey V., Cross, Adrian W., Denisov, Gregory G., McStravick, Michael, Bratman, Vladimir L., Whyte, Colin G., Robertson, Craig W., Young, Alan R., Yin, Huabi, Ronald, Kevin, MacInnes, Philip, Phelps, Alan D. R.

“…Metal waveguide can be used as a dispersive medium to convert long duration, lower power pulses into short, higher peak power pulses. This provides an advanced…”
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10.4: Experimental demonstration of a W-band gyro-BWO using a helically corrugated waveguide by Donaldson, Craig R, Wenlong He, Cross, Adrian W, Fengping Li, Phelps, Alan D R, Liang Zhang, Ronald, Kevin, Robertson, Craig W, Whyte, Colin G, McElhinney, P

“…The experimental demonstration of a W-band gyro-BWO using both thermionic cusp electron gun and helically corrugated waveguide will be presented. A cusp gun…”
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Gyro-BWO experiments using a helical interaction waveguide by He, W., Ronald, K., Young, A.R., Cross, A.W., Phelps, A.D.R., Whyte, C.G., Rafferty, E.G., Thomson, J., Robertson, C.W., Speirs, D.C., Samsonov, S.V., Bratman, V.L., Denisov, G.G.

“…A helically corrugated waveguide was used for a gyrotron backward-wave oscillator (gyro-BWO) experiment. A thermionic cathode was used to produce an electron…”
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Gyro-BWO experiments using a helical interaction waveguide by WENLONG HE, RONALD, Kevin, SAMSONOV, Sergey V, BRATMAN, Vladimir L, DENISOV, Gregory G, YOUNG, Alan R, CROSS, Adrian W, PHELPS, Alan D. R, WHYTE, Colin G, RAFFERTY, Euan G, THOMSON, Jamie, ROBERTSON, Craig W, SPEIRS, David C

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