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  • Kevin Ronald
2019
Open Access
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6 Downloads (Pure)

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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14 Downloads (Pure)
2018
Open Access
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19 Downloads (Pure)
Open Access
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15 Downloads (Pure)
2019

A self-insulating, high-power, microwave source

MacInnes, P., Ronald, K., Cooke, S., Chernyavskiy, I. & Phelps, A., 4 Dec 2019.

Research output: Contribution to conferenceAbstract

Open Access
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5 Downloads (Pure)
2016

Developments of a W-band gyro-TWA for high PRF operation

He, W., Donaldson, C. R., Zhang, L., McElhinney, P., Garner, J., Ronald, K., Cross, A. W. & Phelps, A. D. R., 28 Apr 2016, 2015 8th UK, Europe, China Millimeter Waves and THz Technology Workshop, UCMMT 2015. Piscataway, 2 p. 7460612

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

Open Access
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44 Downloads (Pure)
2019

Coupling structure for a high Q corrugated cavity as a microwave undulator

Zhang, L., He, W., Donaldson, C. R., Clarke, J., Ronald, K., Phelps, A. D. R. & Cross, A. W., 31 Oct 2019, In : IEEE Transactions on Electron Devices. 66, 10, p. 4392-4397 6 p.

Research output: Contribution to journalArticle

Open Access
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13 Downloads (Pure)
2016

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)
2019

Gridded cusp gun for a terahertz gyro-amplifier

Zhang, L., Donaldson, C. R., He, W., Phelps, A. D. R., Ronald, K. & Cross, A. W., 20 Aug 2019. 2 p.

Research output: Contribution to conferencePaper

Open Access
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5 Downloads (Pure)
2016

Compact millimetre wave and terahertz radiation sources driven by pseudospark-generated electron beam

Yin, H., Cross, A. W., Zhang, L., He, W., Bowes, D., Ronald, K. & Phelps, A. D. R., 31 Mar 2016, IET Colloquium on Millimetre-Wave and Terahertz Engineering & Technology 2016. Stevenage

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

Open Access
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28 Downloads (Pure)

High pulse repetition frequency operation of a W-band Gyro-TWA based on a cusp electron beam source

He, W., Donaldson, C. R., Zhang, L., McElhinney, P., Yin, H., Garner, J., Ronald, K., Cross, A. W. & Phelps, A. D. R., 1 Dec 2016, 41st International Conference on Infrared, Millimeter and Terahertz Waves, IRMMW-THz 2016. Piscataway, 7758427. (Proceedings International Conference on Infrared, Millimeter, and Terahertz Waves).

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

Open Access
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2 Citations (Scopus)
37 Downloads (Pure)
2018

Design of a Ka-band microwave undulator

Zhang, L., He, W., Clarke, J., Ronald, K., Phelps, A. D. R. & Cross, A. W., 5 Sep 2018, p. 1-2. 2 p.

Research output: Contribution to conferencePaper

Open Access
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14 Downloads (Pure)
2019

Compact high power millimetre wave sources driven by pseudospark-sourced electron beams

He, W., Xie, J., Phelps, A., Cross, A., Yin, H., Shu, G., Yin, Y., Ronald, K., Zhao, J., Chen, X., Alfadhl, Y. & Zhang, L., 11 Sep 2019, In : IET Microwaves, Antennas & Propagation. 13, 11, p. 1794-1798 5 p.

Research output: Contribution to journalArticle

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

Design of a metamaterial cavity for harmonic terahertz gyrotrons

Zhang, Z-W., Du, C-H., Li, F-H., Zhu, J-F., Liu, P-K., Zhang, L., He, W., Yin, H., Ronald, K., Phelps, A. D. R. & Cross, A. W., 20 Aug 2019. 3 p.

Research output: Contribution to conferencePaper

Open Access
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4 Downloads (Pure)
2018

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)

Apparatus for investigating non-linear microwave interactions in magnetised plasma

Ronald, K., Phelps, A. D. R., Cairns, R. A., Bingham, R., Eliasson, B., Koepke, M. E., Cross, A. W., Speirs, D. C., Robertson, C. W. & Whyte, C. G., 31 Oct 2018, 45th EPS Conference on Plasma Physics (EPS 2018) . Coda, S., Lapenta, G., Michaut, C., Berndt, J., Mantsinen, M. & Weber, S. (eds.). p. 961-964 4 p.

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

Open Access
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17 Downloads (Pure)
2019
Open Access
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4 Downloads (Pure)
2016

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)
2019

Experiment and simulations of kinetic instabilities in mirror-confined ECR discharge plasma

Eliasson, B., Viktorov, M., Golubev, S., Speirs, D. C., Mansfeld, D., Phelps, A. D. R., Bingham, R., Cross, A. W. & Ronald, K., 4 Dec 2019.

Research output: Contribution to conferenceAbstract

Open Access
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Initial numerical results of a frequency agile, high-power, X-band BWO

MacInnes, P., Vasilevska, M. & Ronald, K., 25 Apr 2019. 1 p.

Research output: Contribution to conferencePoster

File
1 Downloads (Pure)
2018

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)

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)
2016

A dual-frequency quasi-optical output system for a THz gyro-multiplier

Li, X., Liu, X., Alfadhl, Y., Ronald, K., He, W., Cross, A. & Chen, X., 30 Sep 2016, In : IEEE Transactions on Terahertz Science & Technology. 6, 5, p. 674-681 8 p.

Research output: Contribution to journalArticle

Open Access
File
9 Citations (Scopus)
11 Downloads (Pure)
2018

Measurements of structures for vacuum electronic sources manufactured by 3D printing

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

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

Open Access
File
9 Downloads (Pure)
2019

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)

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
File
3 Citations (Scopus)
14 Downloads (Pure)
2018

Amplification of W-band multi-frequency signals using a gyro-TWA

He, W., Donaldson, C. R., Zhang, L., Cain, P., Yin, H., Ronald, K., Cross, A. W. & Phelps, A. D. R., 29 Oct 2018, 2018 43rd International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz). Piscataway, NJ.: IEEE, 2 p. 8510108

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

Open Access
File
11 Downloads (Pure)
2016

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
File
3 Citations (Scopus)
72 Downloads (Pure)
2020

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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10 Downloads (Pure)
2018

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
File
1 Citation (Scopus)
32 Downloads (Pure)
2019
Open Access
File
2016

Design of frequency selective surfaces for a gyro-multiplier output system

Li, X., Liu, X., Alfadhl, Y., Chen, X., He, W., Ronald, K. & Cross, A., 8 Sep 2016, 2016 IEEE International Vacuum Electronics Conference, IVEC 2016. 2 p. 7561799

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

Open Access
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24 Downloads (Pure)
2020

Demonstration of cooling by the Muon Ionization Cooling Experiment

The MICE collaboration, Bogomilov, M., Ronald, K., Young, A., Chatzitheodoridis, G. & Dick, A. J., 5 Feb 2020, In : Nature. 578, p. 53-59 7 p.

Research output: Contribution to journalArticle

Open Access
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4 Citations (Scopus)
2 Downloads (Pure)
2019

First particle-by-particle measurement of emittance in the Muon Ionization Cooling Experiment

Adams, D., Ronald, K., Whyte, C., Young, A., Chatzitheodoridis, G. & The MICE collaboration, 30 Mar 2019, In : European Physical Journal C. 79, 3, 15 p., 257.

Research output: Contribution to journalArticle

Open Access
File
4 Citations (Scopus)
12 Downloads (Pure)

Apparatus for investigating non-linear microwave interactions in magnetised plasma

Bingham, R., Ronald, K., Whyte, C. G., Wilson, K., Phelps, A. D. R., Cairns, R. A., Eliasson, B., Koepke, M. E., Cross, A. W., Speirs, D. C., Robertson, C. W., MacInnes, P. & Bamford, R., 12 Jul 2019, 46th EPS Conference on Plasma Physics 8 - 12 July 2019. Mulhouse, France, Vol. 43C. 4 p. P2.4016

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

Open Access
File
1 Downloads (Pure)
2020
2019

Microwave emission due to kinetic instabilities in an over-dense mirror-confined plasma

Viktorov, M., Eliasson, B., Golubev, S., Speirs, D., Mansfeld, D., Phelps, A. D. R., Bingham, R., Cross, A. W. & Ronald, K., 9 Oct 2019.

Research output: Contribution to conferencePoster

Open Access
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0.37 THz gyro-TWA with a cryo-free SCM: design and simulation

Donaldson, C. R., Zhang, L., Cross, A. W., Ronald, K., Phelps, A. D. R. & He, W., 1 Sep 2019, 2019 44th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz). Piscataway, N.J.: IEEE, 2 p.

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

Open Access
File
4 Downloads (Pure)

Maser radiation from collisionless shocks: application to astrophysical jets

Speirs, D. C., Ronald, K., Phelps, A. D. R., Koepke, M. E., Cairns, R. A., Rigby, A., Cruz, F., Trines, R., Bamford, R., Kellett, B. J., Albertazzi, B., Cross, J. E., Fraschetti, F., Graham, P., Kozlowski, P. M., Kuramitsu, Y., Miniati, F., Morita, T., Oliver, M., Reville, B. & 10 others, Sakawa, Y., Sarkar, S., Spindloe, C., Koenig, M., Silva, L. O., Lamb, D. Q., Tzeferacos, P., Lebedev, S., Gregori, G. & Bingham, R., 14 Mar 2019, In : High Power Laser Science and Engineering. 7, 8 p., e17.

Research output: Contribution to journalArticle

Open Access
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6 Downloads (Pure)
2020

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
File
1 Downloads (Pure)
2019
Open Access
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6 Downloads (Pure)

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
File
1 Citation (Scopus)
10 Downloads (Pure)

Effects of tolerance fabrication of extended interaction oscillator based on pseudospark-sourced sheet electron beam at 0.35 THz

Xie, J., Yin, H., Zhang, L., Ronald, K., Phelps, A. D. R., He, W., Shu, G., Zhao, J., Chen, X., Alfadhl, Y., Zhang, J. & Cross, A. W., 20 Aug 2019. 3 p.

Research output: Contribution to conferencePaper

Open Access
File
1 Downloads (Pure)

Design and simulation of a 0.37 THz gyro-TWA

Zhang, L., Donaldson, C. R., He, W., Ronald, K., Phelps, A. D. R. & Cross, A. W., 20 Aug 2019. 2 p.

Research output: Contribution to conferencePaper

Open Access
File
12 Downloads (Pure)
Open Access
File
9 Downloads (Pure)
2016

Experimental test of a W-band gyro-TWA for cloud radar applications

He, W., Donaldson, C. R., Zhang, L., McElhinney, P., Yin, H., Garner, J. R., Ronald, K., Cross, A. W. & Phelps, A. D. R., 4 Oct 2016, 2016 46th European Microwave Conference (EuMC). Piscataway, N.J.: IEEE, p. 1099-1102 4 p.

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

Open Access
File
3 Citations (Scopus)
6 Downloads (Pure)
2019

Characteristic measurements of a wideband gyro-TWA operating in W-band

He, W., Zhang, L., Donaldson, C. R., Ronald, K., Phelps, A. D. R., Cross, A. W. & Cain, P., 1 May 2019. 2 p.

Research output: Contribution to conferencePaper

Open Access
File
10 Downloads (Pure)
2016

Applications of Pseudospark produced electron beams in millimetre wave radiation sources

Cross, A. W., He, W., Zhang, L., Yin, H., Bowes, D., Ronald, K., Phelps, A. D. R., Yin, Y., Liu, G., Li, D. & Chen, X., 26 Apr 2016, 2015 8th UK, Europe, China Millimeter Waves and THz Technology Workshop, UCMMT 2015. Piscataway, 4 p. 7460609

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

Open Access
File
50 Downloads (Pure)
2018

Design of a Ka-band MW-level high efficiency gyroklystron for accelerators

Wang, L., Dong, K., He, W., Wang, J., Luo, Y., Cross, A. W., Ronald, K. & Phelps, A. D. R., 12 Sep 2018, In : IET Microwaves, Antennas and Propagation. 12, 11, p. 1752-1757 6 p.

Research output: Contribution to journalArticle

Open Access
File
1 Citation (Scopus)
13 Downloads (Pure)

High-power gyro-klystrons for acceleration applications

Zhang, L., Wang, L., Nix, L., Dong, K., He, W., Cross, A., Ronald, K. & Phelps, A., 4 Jun 2018.

Research output: Contribution to conferenceSpeech

Open Access
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10 Downloads (Pure)