Alan Phelps, DPhil, MA, CPhys, FInstP, MIEEE, FRSE

Prof

  • United Kingdom

1996 …2023
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Research Output 1996 2020

2019
3 Downloads (Pure)

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
Submillimeter waves
Superconducting magnets
Electron beams
Waveguides
traveling wave amplifiers
4 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., 8 Jul 2019. 1 p.

Research output: Contribution to conferencePaper

Open Access
File
microwaves
interactions
laser plasma interactions
plasma dynamics
ion acoustic waves

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
File
microwaves
oscillators
electron beams
energy requirements
backward waves
8 Downloads (Pure)

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
traveling wave amplifiers
broadband
sweep frequency
versatility
power amplifiers
1 Citation (Scopus)
27 Downloads (Pure)

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
File
pencil beams
Millimeter waves
millimeter waves
Electron beams
electron beams
12 Downloads (Pure)

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
File
Wigglers
Waveguides
Microwaves
Permanent magnets
Geometry
3 Downloads (Pure)

Cusp electron gun with modulation electrode for a THz gyro-amplifier

Zhang, L., Donaldson, C. R., He, W., Phelps, A. D. R. & Cross, A. W., 21 Oct 2019, 44th International Conference on Infrared, Millimeter, and Terahertz Waves. Piscataway, NJ: IEEE, 2 p. 8874517

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

Open Access
File
traveling wave amplifiers
Electron guns
electron guns
cusps
amplifiers
10 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
traveling wave amplifiers
submillimeter waves
superconducting magnets
cusps
simulation
1 Citation (Scopus)
3 Downloads (Pure)

Design of a 0.35 THz extended interaction oscillator based on pseudospark-sourced sheet electron beam

Xie, J., Cross, A. W., He, W., Yin, H., Zhang, L. & Phelps, A. D. R., 29 Apr 2019. 2 p.

Research output: Contribution to conferencePaper

Open Access
File
Beam plasma interactions
Electron beams
oscillators
electron beams
Current density
2 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
File
cyclotron resonance devices
photonics
harmonics
cavities
crystals
Open Access
File
Millimeter waves
millimeter waves
gradients
Linear accelerators
test facilities
1 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
oscillators
electron beams
machining
fabrication
interactions
4 Downloads (Pure)

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
File
traveling wave amplifiers
cusps
amplifiers
triodes
electron guns
6 Downloads (Pure)
Open Access
File
oscillators
vacuum
wave interaction
electronics
wavelengths
Open Access
File
microwaves
interactions
laser plasma interactions
wave interaction
cyclotrons
5 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
File
Masers
masers
astrophysics
shock
Radiation
12 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
File
coupled modes
copper
tunable filters
backups
periodic variations
4 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
File
oscillators
simulation
selectivity
electron beams
waveguides
1 Citation (Scopus)
14 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
Electrodynamics
electrodynamics
Excitation
excitation
Substrate
4 Downloads (Pure)

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., 31 Dec 2019, In : IEEE Transactions on Electron Devices. 67, 2, p. 652-658 7 p.

Research output: Contribution to journalArticle

Open Access
File
Beam plasma interactions
Electron beams
Microfabrication
Surface roughness
Networks (circuits)
1 Citation (Scopus)
10 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
corrugated waveguides
Wigglers
free electron lasers
Waveguides
Free electron lasers
5 Downloads (Pure)
Open Access
File
electrodynamics
absorbers
solar cells
frequency ranges
routes
2018
15 Downloads (Pure)
Open Access
File
3D printers
Periodic structures
Millimeter waves
Printing
Microwaves
10 Downloads (Pure)

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
Frequency agility
Amplification
Electron beams
Bandwidth
Experiments
17 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
File
laser plasma interactions
electromagnetic radiation
microwaves
fusion reactors
wave interaction
13 Citations (Scopus)
24 Downloads (Pure)

Demonstration of a planar W-band, kW-level extended interaction oscillator based on a pseudospark-sourced sheet electron beam

Shu, G., Yin, H., Zhang, L., Zhao, J., Liu, G., Phelps, A., Cross, A. & He, W., 17 Jan 2018, In : IEEE Electron Device Letters . 39, 3, p. 432-435 4 p.

Research output: Contribution to journalLetter

Open Access
File
Beam plasma interactions
Electron beams
Demonstrations
oscillators
electron beams
13 Downloads (Pure)

Design of a gridded cusp gun for a W-band gyro-TWA

Zhang, L., Donaldson, C. R., Cross, A. W., Phelps, A. D. R. & He, W., 29 Oct 2018, 2018 43rd International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz). Piscataway, NJ.: IEEE, 2 p. 8510209

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

Open Access
File
traveling wave amplifiers
Electron guns
electron guns
cusps
Electron beams
12 Downloads (Pure)

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
File
Wigglers
Microwaves
Waveguides
1 Citation (Scopus)
11 Downloads (Pure)

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
Particle accelerators
MATLAB
Networks (circuits)
13 Citations (Scopus)
30 Downloads (Pure)

Experimental demonstration of a terahertz extended interaction oscillator driven by a pseudospark-sourced sheet electron beam

Shu, G. X., Zhang, L., Yin, H., Zhao, J. P., Phelps, A. D. R., Cross, A. W., Liu, G., Luo, Y., Qiao, Z. F. & He, W., 15 Jan 2018, In : Applied Physics Letters. 112, 3, 5 p., 033504.

Research output: Contribution to journalLetter

Open Access
File
oscillators
electron beams
interactions
radiation
beam currents

Experimental study of terahertz radiation sources based on a planar slow wave structure and a pseudospark-sourced sheet electron beam

Shu, G., Zhang, L., Yin, H., Zhao, J., Liu, G., Qiao, Z., Phelps, A. D. R., Cross, A. W. & He, W., 9 Sep 2018, p. 1-2.

Research output: Contribution to conferencePaper

Slow wave structures
Electron beams
Radiation
Beam plasma interactions
Current density
10 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
File
klystrons
output
bunching
superhigh frequencies
China
8 Downloads (Pure)

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
Periodic structures
printing
Printing
3D printers
Vacuum
19 Downloads (Pure)
Open Access
File
Wave power
3D printers
Beam plasma interactions
Electrodeposition
Printing
1 Citation (Scopus)
31 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
File
Wigglers
Waveguides
Microwaves
Free electron lasers
Electromagnetic fields
8 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
File
Millimeter waves
millimeter waves
Vacuum
vacuum
planar structures
10 Downloads (Pure)

Output measurements of a highly overmoded W-band source

MacLachlan, A. J., Phipps, A. R., Robertson, C. W., Yin, H., Zhang, L., Cross, A. W. & Phelps, A. D. R., 5 Sep 2018, p. 1-2. 2 p.

Research output: Contribution to conferencePaper

Open Access
File
output
wave interaction
selectivity
electron beams
conduction
9 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
File
Helical waveguides
Compressors
Microwaves
Compression ratio (machinery)
Traveling wave tubes
2 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
File
Periodic structures
Printing
Electron beams
Microwaves
Silver
7 Downloads (Pure)

Pseudospark-sourced sheet electron beam for application in high power millimeter wave radiation generation

Yin, H., Shu, G., Zhang, L., He, W., Zhao, J., Phelps, A. D. R. & Cross, A. W., 9 Sep 2018. 2 p.

Research output: Contribution to conferencePaper

Open Access
File
Millimeter waves
Electron beams
Current density
Magnetic fields
Radiation
2 Citations (Scopus)
8 Downloads (Pure)
Open Access
File
radiation sources
coupled modes
cavities
mesh
configurations
2017
1 Citation (Scopus)
9 Downloads (Pure)

Additive manufacturing method of prototyping novel mm-wave and THz sources

Phipps, A. R., MacLachlan, A. J., Robertson, C. W., Cross, A. W. & Phelps, A. D. R., 7 Mar 2017, 2016 IEEE 9th UK-Europe-China Workshop on Millimetre Waves and Terahertz Technologies (UCMMT). Piscataway,N.J: Institute of Electrical and Electronics Engineers Inc., p. 238-240 3 p.

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

Open Access
File
3D printers
manufacturing
coherent sources
Electromagnetic fields
Electron beams
19 Citations (Scopus)
136 Downloads (Pure)

Advanced post-acceleration methodology for pseudospark-sourced electron beam

Zhao, J., Yin, H., Zhang, L., Shu, G., He, W., Zhang, Q., Phelps, A. D. R. & Cross, A. W., 6 Feb 2017, In : Physics of Plasmas. 24, 2, 5 p., 023105.

Research output: Contribution to journalArticle

Open Access
File
electron beams
methodology
electric potential
electron sources
pulses
10 Citations (Scopus)
17 Downloads (Pure)

A tapered multi-gap multi-aperture pseudospark-sourced electron gun based X-band slow wave oscillator

Kumar, N., Lamba, R. P., Hossain, A. M., Pal, U. N., Phelps, A. D. R. & Prakash, R., 20 Nov 2017, In : Applied Physics Letters. 111, 21, 4 p., 213502.

Research output: Contribution to journalArticle

Open Access
File
electron guns
superhigh frequencies
apertures
oscillators
hollow cathodes
36 Citations (Scopus)
41 Downloads (Pure)
Open Access
File
traveling wave amplifiers
broadband
electrons
interactions
power amplifiers
49 Downloads (Pure)

Compact sub-terahertz radiation sources driven by pseudospark-produced electron beams

Cross, A. W., He, W., Zhang, L., Yin, H., Bowes, D., Ronald, K., Phelps, A. D. R., Li, D., Chen, X., Yin, Y., Shu, G., Liu, G. & Zhao, J., 9 Mar 2017, 2016 IEEE 9th UK-Europe-China Workshop on Millimetre Waves and Terahertz Technologies (UCMMT). Piscataway, N.J., 3 p.

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

Open Access
File
Electron beams
Radiation
Millimeter waves
Studios
Beam plasma interactions
15 Downloads (Pure)

Demonstration of a high power broadband mm-wave gyro-TWA

He, W., Zhang, L., Donaldson, C. R., Cross, A. W. & Phelps, A. D. R., 16 Oct 2017, 2017 10th UK-Europe-China Workshop on Millimetre Waves and Terahertz Technologies, UCMMT 2017. Piscataway, NJ: IEEE, 3 p. 8068471

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

Open Access
File
traveling wave amplifiers
Demonstrations
electron beams
broadband
Frequency bands
1 Citation (Scopus)
12 Downloads (Pure)

Design and experiment of a broadband W-band gyro-TWA based on a helically corrugated interaction region

He, W., Donaldson, C. R., Zhang, L., McElhinney, P., Yin, H., Garner, J., Ronald, K., Cross, A. W. & Phelps, A. D. R., 12 Oct 2017, 2017 42nd International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2017. Piscataway, NJ.: IEEE, 2 p. 8067027

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

Open Access
File
traveling wave amplifiers
broadband
output
Experiments
interactions
1 Citation (Scopus)
13 Downloads (Pure)

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

Wang, L., Dong, K., Wang, J., Luo, Y., He, W., Cross, A. W., Ronald, K. & Phelps, A. D. R., 16 Oct 2017, 2017 10th UK-Europe-China Workshop on Millimetre Waves and Terahertz Technologies, UCMMT 2017. Piscataway, NJ: IEEE, 3 p. 8068506

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

Open Access
File
Particle accelerators
accelerators
injection
Cells
cavities

Design of a TE10-to-TE61 mode coupler for a 372 GHz gyrotron travelling wave amplifier

Zhang, L., Garner, J., Donaldson, C. R., He, W., Phelps, A. D. R. & Cross, A. W., 21 Dec 2017, 2017 47th European Microwave Conference (EuMC). Piscataway, NJ.: IEEE, p. 568-571 4 p. 8230911

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

Open Access
File
traveling wave amplifiers
couplers
phase response
coupled modes
Frequency bands