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Research Output 1998 2019

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
traveling wave amplifiers
broadband
sweep frequency
versatility
power amplifiers

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

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., 4 Aug 2019, (Accepted/In press) In : IEEE Transactions on Electron Devices. 6 p.

Research output: Contribution to journalArticle

Open Access
File
Wigglers
Waveguides
Microwaves
Permanent magnets
Geometry

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

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

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
1 Citation (Scopus)

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
emittance
Ionization
muons
Cooling
cooling

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
Open Access
File
oscillators
vacuum
wave interaction
electronics
wavelengths
Open Access
File
Langmuir turbulence
Electromagnetic waves
ionospherics
radio frequencies
electromagnetic radiation

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 othersSakawa, 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
Open Access
File
coupled modes
copper
tunable filters
backups
periodic variations

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)

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

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
File
harmonics
cavities
liquid nitrogen
Q factors
retarding

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., 28 Nov 2019, (Accepted/In press) In : IEEE Transactions on Electron Devices. p. 1-7 7 p.

Research output: Contribution to journalArticle

Open Access
File
Beam plasma interactions
Electron beams
Microfabrication
Surface roughness
Networks (circuits)

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
free electron lasers
microwaves
cavities
wavelengths

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., 28 Nov 2019, (Accepted/In press) In : IEEE Transactions on Electron Devices. p. 1-8 8 p.

Research output: Contribution to journalArticle

Open Access
File
Tuning
Magnetic resonance spectroscopy
Plasma heating
Terahertz waves
Networks (circuits)
Open Access
File
electrodynamics
absorbers
solar cells
frequency ranges
routes
2018
Open Access
File
3D printers
Periodic structures
Millimeter waves
Printing
Microwaves

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., 10 Aug 2018. 2 p.

Research output: Contribution to conferencePaper

Open Access
File
traveling wave amplifiers
electron beams
bandwidth
output
interactions

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

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)

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)

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

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
Open Access
File
Wave power
3D printers
Beam plasma interactions
Electrodeposition
Printing
1 Citation (Scopus)

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

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

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

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
2017
34 Citations (Scopus)
Open Access
File
traveling wave amplifiers
broadband
electrons
interactions
power amplifiers

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
3 Citations (Scopus)

Computer simulation of the sheath and the adjacent plasma in the presence of a plasma source

Shustin, E. G., Tarakanov, V. P. & Ronald, K., 1 Jan 2017, In : Vacuum. 135, p. 1-6 6 p.

Research output: Contribution to journalArticle

Open Access
File
Plasma sheaths
Plasma sources
sheaths
computerized simulation
Plasmas

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)

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
2 Citations (Scopus)

Investigation of frequency-selective surfaces for a THz gyromultiplier output system

Li, X., Liu, X., Ronald, K., He, W., Zeng, Y., Alfadhl, Y., Donnan, R., Cross, A. & Chen, X., 30 Nov 2017, In : IEEE Transactions on Electron Devices. 64, 11, p. 4678-4685 8 p.

Research output: Contribution to journalArticle

Open Access
File
Frequency selective surfaces
Vacuum
Polarization
Fabrication

Investigation of millimeter wave extended interaction oscillation using improved pseudospark-sourced electron beams

Yin, H., Zhang, L., He, W., Shu, G., Zhao, J., Yin, Y., Ronald, K., Phelps, A. D. R. & Cross, A. W., 16 Oct 2017, 2017 42nd International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz). Piscataway, NJ: IEEE, 2 p. 8066852

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

Open Access
File
Beam quality
Beam plasma interactions
Millimeter waves
millimeter waves
Electron beams
1 Citation (Scopus)

Laboratory experiments simulating electron cyclotron masers in space

Ronald, K., Speirs, D. C., King, M., Heelis, T., McConville, S. L., Gillespie, K. M., Bingham, R., Robertson, C. W., Cross, A. W. & Phelps, A. D. R., 4 Aug 2017, In : EPJ Web of Conferences. 149, 2 p., 03015.

Research output: Contribution to journalArticle

Open Access
File
masers
cyclotrons
electrons
2 Citations (Scopus)

Lattice design and expected performance of the muon ionization cooling experiment demonstration of ionization cooling

The MICE collaboration, 19 Jun 2017, In : Physical Review Accelerators and Beams. 20, 6, 11 p., 063501.

Research output: Contribution to journalArticle

Open Access
File
muons
cooling
ionization
emittance
neutrino beams

Measurement of a W-band gyro-TWA experiment based on a helically corrugated interaction region

He, W., Donaldson, C. R., Zhang, L., McElhinney, P., Garner, J., Ronald, K., Cross, A. W. & Phelps, A. D. R., 24 Apr 2017, p. 1-2. 2 p.

Research output: Contribution to conferencePaper

Open Access
File
corrugated waveguides
output
electron guns
cusps
couplers

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 othersMoss, 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
File
Ionization
Demonstrations
Cooling
Physics
High energy physics

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
File
Millimeter waves
millimeter waves
Electron beams
oscillations
pencil beams

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
File
Beam plasma interactions
Millimeter waves
Electron beams
electron beams
oscillations
2016
6 Citations (Scopus)

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
Frequency selective surfaces
multipliers
selective surfaces
output
Gaussian beams

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
radiation sources
Millimeter waves
millimeter waves
Electron beams
electromagnetic radiation

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
File
Millimeter waves
Electron beams
Slow wave structures
Plasmas
Radiation

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
File
Frequency selective surfaces
Gaussian beams
Waveguides
Fabrication
Testing

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
File
traveling wave amplifiers
corrugated waveguides
Pulse repetition rate
Electron guns
liquid cooling