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Research Output 1996 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
1 Citation (Scopus)

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

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

Electron injector based on thermionic RF modulated electron gun for particle accelerator applications

Zhang, L., Adam, G., Militsyn, B., He, W. & Cross, A. W., 18 Nov 2019, (Accepted/In press) In : IEEE Transactions on Electron Devices. 7 p.

Research output: Contribution to journalArticle

Open Access
File
Electron guns
Particle accelerators
Thermionic cathodes
Electrons
Computer simulation

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

Measurement of a broadband input coupler for a W-band gyro-TWA

Zhang, L., Donaldson, C. R., Cross, A. W. & He, W., 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
couplers
broadband
frequency ranges
bandwidth
coefficients
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 frequency-swept signals in a W-band gyrotron travelling wave amplifier

Zhang, L., Donaldson, C. R., Cain, P., Cross, A. W. & He, W., 11 May 2018, (Accepted/In press) In : IEEE Electron Device Letters . p. 1-4 4 p.

Research output: Contribution to journalLetter

Open Access
File
Amplification
Frequency agility
Bandwidth
Electron beams
Experiments

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
5 Citations (Scopus)
Open Access
File
Millimeter waves
Bandwidth

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
10 Citations (Scopus)

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

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., 9 Sep 2018. 2 p.

Research output: Contribution to conferencePaper

Open Access
File
Electron guns
Electron beams
Electrodes
Electric potential

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)
10 Citations (Scopus)

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

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
2 Citations (Scopus)

Input coupling systems for millimetre-wave gyrotron travelling wave amplifiers

Zhang, L., Donaldson, C. R., Garner, J., Cross, A. W. & He, W., 9 Apr 2018, In : IET Microwaves, Antennas & Propagation. p. 1-4 4 p.

Research output: Contribution to journalArticle

Open Access
File
Millimeter waves
Waveguides
7 Citations (Scopus)

Investigation on the optimal magnetic field of a cusp electron gun for a W-band gyro-TWA

Zhang, L., He, W., Donaldson, C. R. & Cross, A. W., 9 May 2018, In : Physics of Plasmas. p. 1-6 6 p.

Research output: Contribution to journalArticle

Open Access
File
traveling wave amplifiers
electron guns
cusps
magnetic fields
profiles

Measurement of W-band gyro-TWA with wide bandwidth input signal

Zhang, L., Donaldson, C. R., Cross, A. W., He, W. & Cain, P., 5 Sep 2018. 3 p.

Research output: Contribution to conferencePaper

Open Access
File
Bandwidth
Electron beams
Experiments

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

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

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

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)
Open Access
File
radiation sources
coupled modes
cavities
mesh
configurations
2017
1 Citation (Scopus)

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
18 Citations (Scopus)

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
6 Citations (Scopus)

A millimeter-wave klystron upconverter with a higher order mode output cavity

Burt, G., Zhang, L., Constable, D. A., Yin, H., Lingwood, C. J., He, W., Paoloni, C. & Cross, A. W., 30 Sep 2017, In : IEEE Transactions on Electron Devices. 64, 9, p. 3857-3862 6 p., 7990587.

Research output: Contribution to journalArticle

Open Access
File
Millimeter waves
Klystrons
Spectroscopy
Communication
Electric potential

A multiple-hole input coupler for a 372 GHz gyro-travelling wave amplifier

Zhang, L., Garner, J., He, W., Donaldson, C. R. & Cross, A. W., 24 Apr 2017, p. 1-2. 2 p.

Research output: Contribution to conferencePaper

Open Access
File
Bandwidth
16 Citations (Scopus)

An output coupler for a W-band high power wideband gyro-amplifier

McElhinney, P., Donaldson, C. R., McKay, J. E., Zhang, L., Robertson, D. A., Hunter, R. I., Smith, G. M., He, W. & Cross, A. W., 16 Feb 2017, In : IEEE Transactions on Electron Devices. 4 p.

Research output: Contribution to journalArticle

Open Access
File
Broadband amplifiers
Power amplifiers
Circular waveguides
Ultrahigh vacuum
Frequency bands
34 Citations (Scopus)
Open Access
File
traveling wave amplifiers
broadband
electrons
interactions
power amplifiers