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  • Kevin Ronald

X-ray emission as a diagnostic from pseudospark-sourced electron beams

Bowes, D., Yin, H., He, W., Zhang, L., Cross, A. W., Ronald, K., Phelps, A. D. R., Chen, D., Zhang, P., Chen, X. & Li, D., 15 Sep 2014, In : Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms . 335, p. 74-77 4 p.

Research output: Contribution to journalArticle

Open Access
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15 Citations (Scopus)
127 Downloads (Pure)

Wideband gyro-amplifiers

Whyte, C. G., Ronald, K., Young, A. R., He, W., Robertson, C. W., Rowlands, D. H. & Cross, A. W., 9 May 2012, In : IEEE Transactions on Plasma Science. 40, 5, p. 1303-1310 8 p.

Research output: Contribution to journalArticle

Open Access
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14 Citations (Scopus)
13 Downloads (Pure)

W-band gyro-TWA using a cusp electron gun and a helically corrugated interaction region

He, W., Donaldson, C. R., Zhang, L., McElhinney, P., Ronald, K. & Cross, A. W., Oct 2013, 2013 IEEE 14th International Vacuum Electronics Conference (IVEC 2013). Piscataway, NJ: IEEE, p. 1-2 2 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

Open Access
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1 Citation (Scopus)
71 Downloads (Pure)

W-band Gyro-TWA experiment using a helically corrugated waveguide

He, W., Donaldson, C. R., Zhang, L., McElhinney, P., Ronald, K., Phelps, A., Whyte, C. & Cross, A. W., 2012, 2012 IEEE Thirteenth International Vacuum Electronics Conference (IVEC). Piscataway, NJ.: IEEE, p. 417-418 2 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

Open Access
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110 Downloads (Pure)

W-band gyro-devices using cusp electron gun and helically corrugated interaction region

He, W., Donaldson, C. R., Zhang, L., McElhinney, P., Phelps, A. D. R., Ronald, K. & Cross, A. W., 23 Sep 2012, 2012 37th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz). IEEE, p. 1-3 3 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

W-band gyro-BWO with a four-stage depressed collector

Zhang, L., He, W., Donaldson, C. R., Cross, A. W., Phelps, A. D. R., McElhinney, P. & Ronald, K., Sep 2011, In : Terahertz Science & Technology. 4, 3, p. 76-84 9 p.

Research output: Contribution to journalArticle

Open Access
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77 Downloads (Pure)

W-band Gyro-BWO using a helically corrugated waveguide

Donaldson, C. R., He, W., Phelps, A. D. R., Li, F., Cross, A. W., Ronald, K., Young, A. R. & Whyte, C. G., 21 May 2012, 2008 17th International Conference on High Power Particle Beams (BEAMS). Piscataway, NJ: IEEE

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

W-band extended interaction oscillations using post-accelerated pseudospark-sourced electron beams

Cross, A. W., Yin, H., He, W., Zhang, L., Ronald, K., Phelps, A. D. R., Chen, X., Shu, G., Yin, Y. & Zhao, J., 16 Oct 2017, 2017 10th UK-Europe-China Workshop on Millimetre Waves and Terahertz Technologies, UCMMT 2017. Piscataway, NJ: IEEE, 4 p. 8068484

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

Open Access
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7 Downloads (Pure)
Open Access
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6 Downloads (Pure)

Visualization of a pseudospark-sourced electron beam

Bowes, D., Yin, H., He, W., Ronald, K., Phelps, A., Chen, D., Zhang, P., Chen, X., Li, D. & Cross, A. W., 21 Oct 2014, In : IEEE Transactions on Plasma Science. 42, 10, p. 2826-2827 2 p.

Research output: Contribution to journalArticle

Open Access
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12 Citations (Scopus)
112 Downloads (Pure)

Upgrade of a W-band gyro-TWA for cloud radar application

He, W., Donaldson, C. R., Zhang, L., McElhinney, P., Yin, H., Garner, J. R., Ronald, K., Cross, A. W. & Phelps, A. D. R., 26 May 2016, IET Colloquium on Millimetre-Wave and Terahertz Engineering & Technology 2016. London, 2 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

Open Access
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6 Downloads (Pure)

Updates on a W-band Gyro-BWO using a helically corrugated waveguide experiment

Donaldson, C. R., He, W., Zhang, L., Cross, A. W., Li, F., Phelps, A. D. R., Ronald, K., Robertson, C. W., Whyte, C. G. & McElhinney, P., 24 Apr 2012, 2012 IEEE Thirteenth International Vacuum Electronics Conference (IVEC). IEEE, p. 217 - 218 2 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

The RF system for the MICE experiment

Ronald, K., Whyte, C. G., Dick, A., Moss, A., Grant, A., White, C., Corlett, P., Stanley, T., Li, D., DeMello, A. J., Virostek, S., Moretti, A., Pasquinelli, R., Peterson, D., Schultz, R., Volk, J., Torun, Y., Hanlet, P., Long, K., Pasternak, J. & 4 others, Hunt, C., Summers, D., Luo, T. & Smith, P. J., 24 Dec 2013, IPAC 2013: Proceedings of the 4th International Particle Accelerator Conference. p. 2848-2850 3 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

Open Access
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3 Citations (Scopus)
5 Downloads (Pure)

Theoretical study of a W-band-covering frequency tunable gyrotron

Li, F., Du, C., Gao, Z., Pan, S., Zhang, L., Liu, P., Ronald, K. & Cross, A. W., 29 Feb 2020, In : IEEE Transactions on Electron Devices. 67, 2, p. 659-666 8 p., 8945210.

Research output: Contribution to journalArticle

Open Access
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1 Downloads (Pure)

The dispersion characteristics of helically corrugated waveguide

Zhang, L., Cross, A., He, W., Robertson, C., Young, A., Whyte, C., Ronald, K., MacInnes, P., Donaldson, C. & Phelps, A., 24 Apr 2012, Proceedings of the IEEE Thirteenth International Vacuum Electronics Conference (IVEC), 2012. IEEE, p. 201-202 2 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

Systematic study of a corrugated waveguide as a microwave undulator

Zhang, L., He, W., Clarke, J., Ronald, K., Phelps, A. D. R. & Cross, A., 31 Jan 2019, In : Journal of Synchrotron Radiation. 26, 1, p. 11-17 7 p.

Research output: Contribution to journalArticle

Open Access
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1 Citation (Scopus)
10 Downloads (Pure)

Surface field excitation by an obliquely incident wave

Konoplev, I. V., Phipps, A. R., Phelps, A. D. R., Robertson, C., Ronald, K. & Cross, A. W., Apr 2013, In : Applied Physics Letters. 102, 14, 4 p., 141106.

Research output: Contribution to journalArticle

Open Access
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16 Citations (Scopus)
175 Downloads (Pure)

Study of millimetre wave extended interaction oscillation using pseudospark-sourced E-beams

Cross, A. W., Yin, H., Zhang, L., He, W., Shu, G., Zhao, J., Yin, Y., Ronald, K. & Phelps, A. D. R., 21 Dec 2017, 2017 47th European Microwave Conference. Piscataway, NJ: IEEE, p. 560-563 4 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

Open Access
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Study of a 0.35 THz extended interaction oscillator driven by a pseudospark-sourced sheet electron beam

Xie, J., Zhang, L., Yin, H., He, W., Ronald, K., Phelps, A. D. R., Chen, X., Zhang, J., Alfadhl, Y., Yuan, X., Meng, L. & Cross, A. W., 29 Feb 2020, In : IEEE Transactions on Electron Devices. 67, 2, p. 652-658 7 p.

Research output: Contribution to journalArticle

Open Access
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9 Downloads (Pure)

Study of 1-THz 4th-harmonic gyrotron

Du, C-H., Li, F-H., Pan, S., Liu, P-K., Zhang, L., He, W-L., Yin, H-B., Ronald, K. & Cross, A. W., 20 Aug 2019. 3 p.

Research output: Contribution to conferencePaper

Open Access
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2 Downloads (Pure)

Studies involving simulations of a mm-wave cusp-gun gyro-TWA

Robertson, C. W., Young, A. R., Ronald, K., Cross, A. W. & Whyte, C. G., 21 Oct 2013, 2013 6th UK, Europe, China Millimeter Waves and THz Technology Workshop (UCMMT). 2 p. 6641536

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

Scaled experiment to investigate auroral kilometric radiation mechanisms in the presence of background electrons

McConville, S. L., Ronald, K., Speirs, D. C., Gillespie, K. M., Phelps, A. D. R., Cross, A. W., Bingham, R., Robertson, C. W., Whyte, C. G., He, W., King, M., Bryson, R., Vorgul, I., Cairns, R. A. & Kellett, B. J., 1 Jan 2014, In : Journal of Physics: Conference Series . 511, 1, 6 p., 012061.

Research output: Contribution to journalArticle

Open Access
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64 Downloads (Pure)

Scaled design and test of a coupler for micro-reentrant square-cavities for millimeter wave klystrons

Paoloni, C., Mineo, M., Yin, H., Zhang, L., He, W., Robertson, C. W., Ronald, K., Phelps, A. D. R. & Cross, A. W., 1 Aug 2013, 14th IEEE International Vacuum Electronics Conference: IVEC 2013. Piscataway, NJ: IEEE, 2 p. 6571015

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

6 Citations (Scopus)

RF system for the MICE demonstration of ionization cooling

Ronald, K., Whyte, C. G., Dick, A. J., Young, A. R., Li, D., DeMello, A. J., Lambert, A. R., Luo, T., Anderson, T., Bowring, D., Bross, A., Moretti, A., Pasquinelli, R., Peterson, D., Popovic, M., Schultz, R., Volk, J., Torun, Y., Hanlet, P., Freemire, B. & 12 others, Moss, A., Dumbell, K., Grant, A., White, C., Griffiths, S., Stanley, T., Anderson, R., Alsari, S., Long, K., Kurup, A., Summers, D. & Smith, P. J., 14 Sep 2017. 2 p.

Research output: Contribution to conferencePaper

Open Access
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9 Downloads (Pure)

Resonant excitation of volume and surface fields on complex electrodynamic surfaces

MacLachlan, A. J., Robertson, C. W., Konoplev, I. V., Cross, A. W., Phelps, A. D. R. & Ronald, K., 14 Mar 2019, In : Physical Review Applied. 11, 3, 8 p., 034034.

Research output: Contribution to journalArticle

Open Access
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3 Citations (Scopus)
14 Downloads (Pure)

Pulse compression using a five-fold helically corrugated waveguide

Zhang, L., Cross, A. W., He, W., Whyte, C. G., McStravick, M., Young, A. R., Ronald, K., Robertson, C. W., Phelps, A. D. R., Samsonov, S. V., Mishakin, S. V., Bratman, V. L., Denisov, G. G. & Kolganov, N. G., 23 Sep 2012, 2012 37th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz). IEEE, p. 1-2 2 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

Propagation and escape of astrophysical cyclotron-maser radiation

Speirs, D. C. D. C., Gillespie, K. M. K. M., Ronald, K. K., Mcconville, S. L. S. L., Phelps, A. D. R. A. D. R., Cross, A. W. A. W., Bingham, R. J. R. J., Kellett, B. J. B. J., Cairns, R. A. R. A. & Vorgul, I. Y. I. Y., 4 Dec 2013. 8 p.

Research output: Contribution to conferencePaper

Progress towards numerical and experimental simulations of fusion relevant beam instabilities

King, M., Bryson, R., Ronald, K., Cairns, R. A., McConville, S. L., Speirs, D. C., Phelps, A. D. R., Bingham, R., Gillespie, K. M., Cross, A. W., Vorgul, I. & Trines, R., 2014, In : Journal of Physics: Conference Series . 511, 1, p. 1-5 5 p., 012047.

Research output: Contribution to journalArticle

Open Access
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2 Citations (Scopus)
140 Downloads (Pure)

Periodic structures manufactured by 3D printing for electron beam excitation of high power microwave sources

Phipps, A. R., Maclachlan, A. J., Zhang, L., Robertson, C. R., Konoplev, I. V., Ronald, K., Phelps, A. D. R. & Cross, A. W., 15 Feb 2018, 2017 IEEE 21st International Conference on Pulsed Power. Piscataway, NJ: IEEE, 4 p. 8291307

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

Open Access
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2 Downloads (Pure)

Periodic GW level microwave pulses in X-band from a combination of a relativistic backward wave oscillator and a helical waveguide compressor

Macinnes, P., Bratman, V. L., Zhang, L., Denisov, G. G., He, W., Kolganov, N. G., Mcstravick, M., Mishakin, S. V., Robertson, C. W., Samsonov, S. V., Whyte, C. G., Young, A. R., Ronald, K., Phelps, A. D. R. & Cross, A. W., 13 Feb 2018, 2017 IEEE 21st International Conference on Pulsed Power, PPC. Piscataway, N.J.: IEEE, 4 p. 8291306

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

Open Access
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9 Downloads (Pure)

Oversized W-band 2D periodic lattice oscillator

Cross, A. W., MacLachlan, A. J., Robertson, C. W., Zhang, L., Donaldson, C. R., Yin, H., Phelps, A. D. R. & Ronald, K., 27 Jun 2019, 2019 International Vacuum Electronics Conference (IVEC). Piscataway, N.J.: IEEE, 2 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

Open Access
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5 Downloads (Pure)

Numerical simulations of unbounded cyclotron-maser emissions

Speirs, D. C., McConville, S. L., Gillespie, K. M., Phelps, A. D. R. & Ronald, K., Dec 2013, In : Journal of Plasma Physics. 79, 6, p. 999-1001 3 p.

Research output: Contribution to journalArticle

Open Access
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2 Citations (Scopus)
77 Downloads (Pure)

Numerical simulations of astrophysical cyclotron-maser emission

Speirs, D. C., Bingham, R., Ronald, K., Phelps, A. D. R., McConville, S. L., Gillespie, K. M., Cairns, R. A., Kellett, B. J., Vorgul, I. & Cross, A. W., 1 Dec 2016, 42nd European Physical Society Conference on Plasma Physics, EPS 2015. Vol. 39E. 4 p. P5.405

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

Open Access
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6 Downloads (Pure)

Numerical simulations of a co-harmonic gyrotron

Constable, D. A., Ronald, K., He, W., Phelps, A. D. R., Cross, A. W., Savilov, A. V., Bratman, V. L. & Bandurkin, I. V., 15 Feb 2012, In : Journal of Physics D: Applied Physics. 45, 6, 8 p., 065105.

Research output: Contribution to journalArticle

6 Citations (Scopus)

Numerical simulations of a 4th harmonic cyclotron maser based on the principle of frequency multiplication

Constable, D. A., Bandurkin, I. V., Savilov, A. V., He, W., Whyte, C. G., Robertson, C. W., Phelps, A. D. R., Cross, A. W., Bratman, V. L. & Ronald, K., 29 Oct 2013, 1st Annual Active and Passive RF Devices Seminar. 4 ed. Institution of Engineering and Technology, Vol. 2013. p. 33-35 3 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

1 Citation (Scopus)

Numerical simulation of unconstrained cyclotron resonant maser emission

Speirs, D. C., Gillespie, K. M., Ronald, K., McConville, S. L., Phelps, A. D. R., Cross, A. W., Bingham, R., Kellett, B. J., Cairns, R. A. & Vorgul, I., 1 Jan 2014, In : Journal of Physics: Conference Series . 511, 1, 5 p., 012052.

Research output: Contribution to journalArticle

Open Access
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56 Downloads (Pure)

Numerical simulation of astrophysical cyclotron-maser emission

Speirs, D. C., McConville, S. L., Gillespie, K. M., Phelps, A. D. R., Cross, A. W. & Ronald, K., 11 Dec 2013, 2013 38th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz, Mainz, Germany, 2013. Piscataway, N.J.: IEEE, 2 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

Open Access
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Numerical simulation of a Gyro-BWO with a helically corrugated interaction region, cusp electron gun and depressed collector

He, W., Donaldson, C., Zhang, L., Ronald, K., Phelps, A. & Cross, A., 26 Sep 2011, Numerical Simulations of Physical and Engineering Processes. p. 101-132 32 p.

Research output: Chapter in Book/Report/Conference proceedingChapter

Open Access
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133 Downloads (Pure)

Numerical and experimental simulation of cyclotron instabilities relevant to the magnetosphere

Speirs, D. C., Gillespie, K. M., King, M., Matheson, K., McConville, S. L., Phelps, A. D. R., Whyte, C. G., Robertson, C. W., Cross, A. W., Bingham, R., Koepke, M. E., Cairns, R. A., Vorgul, I. & Ronald, K., 26 Jul 2015, 32nd ICPIG, July 26-31, 2015, Iași, Romania. 2 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

File
79 Citations (Scopus)
525 Downloads (Pure)

Modelling of the anomalous Doppler resonance for a laboratory experiment

Bryson, R., Speirs, D. C., King, M., Vorgul, I., Cairns, R. A., Phelps, A. D. R., Bingham, R., McConville, S. L., Gillespie, K. M. & Ronald, K., 1 Jul 2013, 40th EPS Conference on Plasma Physics, EPS 2013. Naulin, V., Angioni, C., Borghesi, M., Ratynskaia, S., Poedts, S., Donné, T., Kurki-Suonio, T., Äkäslompolo, S., Hakola, A. & Airila, M. (eds.). Mulhouse, Vol. 2. p. 1590-1593 4 p. (Europhysics Conference Abstracts; vol. 37D).

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

Modelling of experimental set-up for material studies based on a periodic lattice with a defect operating in the 215 GHz to 230 GHz frequency range

MacLachlan, A., Konoplev, I. V., Robertson, C. W., Cross, A. W., Ronald, K., Phelps, A. D. R. & Donaldson, C. R., 11 Apr 2011, 2011 IEEE International Vacuum Electronics Conference (IVEC). IEEE, p. 137-138 2 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

1 Citation (Scopus)

Mode coupling in periodic surface lattice and metamaterial structures for mm-wave and THz applications

MacLachlan, A. J., Robertson, C. W., Ronald, K., Cross, A. W. & Phelps, A. D. R., 30 Jun 2019, In : SN Applied Sciences. 1, 6, 8 p., 613.

Research output: Contribution to journalArticle

Open Access
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13 Downloads (Pure)

Millimeter-wave periodic surface lattices for mode control in vacuum electronic sources

MacLachlan, A. J., Phipps, A. R., Robertson, C. W., Konoplev, I. V., Ronald, K., Cross, A. W. & Phelps, A. D. R., 9 Feb 2018, IVEC 2017 - 18th International Vacuum Electronics Conference. Piscataway, NJ.: IEEE, Vol. 2018-January. p. 1-2 2 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

Open Access
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8 Downloads (Pure)

Millimeter-wave components for a helical waveguide gyro-TWA

Robertson, C. W., Young, A. R., Ronald, K., Cross, A. W. & Whyte, C. G., 9 Dec 2014, 2014 39th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz). Piscataway, New Jersey, United States: IEEE, 2 p. 6956498

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

Millimeter-wave backward wave oscillators driven by pseudospark electron beams

Yin, H., Bowes, D., He, W., Cross, A. W., Ronald, K., Li, D., Chen, X. & Phelps, A. D. R., 9 Dec 2014, 2014 39th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz). Piscataway, NJ: IEEE, 2 p. 6956259

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

Microwave windows for W-band gyro-devices

Donaldson, C. R., He, W., Zhang, L., Ronald, K. & Cross, A. W., 1 Jan 2013, UCMMT 2013 - 2013 6th UK, Europe, China Millimeter Waves and THz Technology Workshop. 2 p. 6641558

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

Open Access
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8 Downloads (Pure)

Microwave undulator using a helically corrugated waveguide

Zhang, L., He, W., Clarke, J., Ronald, K., Phelps, A. D. R. & Cross, A. W., 31 Dec 2018, In : IEEE Transactions on Electron Devices. 65, 12, p. 5499-5504 6 p.

Research output: Contribution to journalArticle

Open Access
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1 Citation (Scopus)
32 Downloads (Pure)

Microwave coupler for W-band micro re-entrant square cavities

Paoloni, C., Mineo, M., Yin, H., Zhang, L., He, W., Robertson, C. W., Ronald, K., Phelps, A. D. R. & Cross, A. W., 15 May 2016, In : IET Microwaves, Antennas & Propagation. 10, 7, p. 764-769 6 p.

Research output: Contribution to journalArticle

Open Access
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3 Citations (Scopus)
72 Downloads (Pure)