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Research Output 1998 2019

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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

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

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

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

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
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

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
Open Access
File
Wave power
3D printers
Beam plasma interactions
Electrodeposition
Printing
2017

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
2015

Experimental results from backward wave oscillators driven by a pseudospark-generated electron beam

He, W., Yin, H., Bowes, D., Zhang, L., Donaldson, CR., Ronald, K., Phelps, ADR. & Cross, AW., 26 Jul 2015. 2 p.

Research output: Contribution to conferencePaper

Open Access
File
backward waves
oscillators
electron beams
vacuum tubes
radiation
2013

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

masers
escape
cyclotrons
astrophysics
propagation
2010
1 Citation (Scopus)

5-fold helically corrugated waveguide dispersion measurements

McStravick, M., Ronald, K., Samsonov, S. V., Mishakin, S. V., He, W., Denisov, G. G., Whyte, C. G., Young, A. R., Bratman, V. L., Robertson, C. W., Cross, A. W., Kolganov, N. G., Phelps, A. D. R. & MacInnes, P., 2010, p. 1-2. 2 p.

Research output: Contribution to conferencePaper

corrugated waveguides
pulses
microwaves
pulse compression
compressors

A laboratory study of mechanisms for auroral kilometric radiation generation

Ronald, K., Speirs, D. C., McConville, S. L., Gillespie, K. M., Phelps, A. D. R., Bingham, R., Cross, A. W., Robertson, C. W., Whyte, C. G., He, W., Cairns, R. A., Vorgul, I. & Kellett, B. J., 2010, p. 1-2. 2 p.

Research output: Contribution to conferencePaper

masers
magnetospheres
cyclotrons
radiation
simulation

A W-band gyro-TWA using a helically corrugated waveguide

He, W., Phelps, A. D. R., Donaldson, C. R., Cross, A. W., Zhang, L. & Ronald, K., 2010, p. 1-2. 2 p.

Research output: Contribution to conferencePaper

corrugated waveguides
cusps
amplifiers
traveling wave amplifiers
electron beams

Electron gun design for large orbit axis encircling beams

Robertson, C. W., Whyte, C. G., Young, A. R., Phelps, A. D. R., He, W., Cross, A. W. & Ronald, K., 2010, p. 1-2. 2 p.

Research output: Contribution to conferencePaper

electron guns
electron beams
orbits
selectivity
corrugated waveguides
backward waves
frequency ranges
oscillators
electron guns

Radiation generation at 94 GHz with a pseudospark-sourced electron beam

Bowes, D., Yin, H., Cross, A. W., He, W., Ronald, K., Phelps, A. D. R., Li, D. & Chen, X., 2010.

Research output: Contribution to conferencePaper

electron beams
radiation
output
traveling wave amplifiers
waveguides
microwaves
simulation
computerized simulation

Surface field cavity based on a two-dimensional cylindrical lattice

Phelps, A. D. R., Konoplev, I. V., Fisher, L., Cross, A. W., Ronald, K., Robertson, C. W. & Thumm, M., 2010, p. 1-2. 2 p.

Research output: Contribution to conferencePaper

cavities
propagation
pulses
simulation

The design of a 390 GHz gyrotron based on a cusp electron gun

Li, F., He, W., Phelps, A. D. R., Donaldson, C. R., Zhang, L., Cross, A. W. & Ronald, K., 2010.

Research output: Contribution to conferencePaper

electron guns
cusps
cavities
output
harmonics
2009
1 Citation (Scopus)

Design, simulation and experiment of a cusp electron beam for millimeter wave gyro-devices

He, W., Donaldson, C., Li, F., Cross, A., Phelps, A. & Ronald, K., 2009, p. 517-518. 3 p.

Research output: Contribution to conferencePaper

Open Access
File
cusps
millimeter waves
electron beams
simulation
thermionics

Investigation of a terahertz multicavity microklystron driven by a pseudospark electron beam

Yin, H., Cross, A. W., Bowes, D., He, W., Phelps, A. D. R., Ronald, K., Li, D., Zhou, J., Chen, X., Protz, J., Verdiel, M., Reynolds, M. & Schuhmann, T., Sep 2009, p. 596-597. 2 p.

Research output: Contribution to conferencePaper

electron beams
2008
1 Citation (Scopus)

Broadband gyro-TWA with thermionic cusp gun: simulations and comparison with experiment

Whyte, C. G., Young, A. R., Rowlands, D. H., Robertson, C. W., Phelps, A. D. R., He, W. L., Cross, A. W., Ronald, K. & IEEE, 2 Jul 2008, p. 91-92. 1 p.

Research output: Contribution to conferencePaper

thermionics
cusps
broadband
simulation
superhigh frequencies

Free-electron maser based on two-dimensional distributed feedback

Phelps, A. D. R., Konoplev, I. V., Cross, A. W., MacInnes, P., He, W., Ronald, K., Whyte, C. G., Robertson, C. W. & IEEE, 12 May 2008, p. 830-832. 2 p.

Research output: Contribution to conferencePaper

masers
free electrons
electron beams
pulses
millimeter waves

High power masers based on 2D periodic structures: from the GHz to THz frequency range

Fisher, L., MacInnes, P., Konoplev, I. V., Cross, A. W., He, W., Ronald, K., Phelps, A. D. R., Whyte, C. G. & IEEE, 5 Nov 2008, p. 418-419. 1 p.

Research output: Contribution to conferencePaper

submillimeter waves
masers
frequency ranges
1 Citation (Scopus)

Laboratory reproduction of auroral magnetospheric radio wave sources

Ronald, K., Speirs, D., McConville, S. L., Gillespie, K. M., Phelps, A. D. R., Cross, A. W., Bingham, R. & Robertson, C. W., 15 Oct 2008, p. 188-196. 8 p.

Research output: Contribution to conferencePaper

radio waves
electron beams
Earth magnetosphere
electrons
pitch (inclination)
2007
1 Citation (Scopus)

A cusp gun for gyro-amplifiers

Rowlands, D. H., Whyte, C. G., Young, A. R., He, W. L., Robertson, C. W., Cross, A. W., Phelps, A. D. R., Ronald, K. & IEEE, 2007, p. 884-885. 1 p.

Research output: Contribution to conferencePaper

superhigh frequencies
cusps
amplifiers
bandwidth
interactions
1 Citation (Scopus)

A W-band Gyro-BWO based on helically corrugated waveguide

He, W., Phelps, A. D. R., Donaldson, C. R., Cross, A. W. & Ronald, K., 2 Sep 2007.

Research output: Contribution to conferencePaper

corrugated waveguides
traps
ultrahigh vacuum
vacuum chambers
rubidium

Pseudospark sourced beam-wave interaction experiments

Cross, A. W., Yin, H., He, W., Phelps, A. D. R., Ronald, K., Whyte, C. G., Robertson, C. W. & IEEE, 2007, p. 154-155. 1 p.

Research output: Contribution to conferencePaper

wave interaction
electron beams
pulses
void ratio
radiation
2006
1 Citation (Scopus)

Design and simulation of a thermionic cusp gun for a gyro-TWA

Rafferty, EG., He, W., Whyte, CG., Young, AR., Ronald, K., Cross, AW., Phelps, ADR., Thomson, JE., Abe, DK. (ed.) & Nusinovich, GS. (ed.), 2006, p. 208-212.

Research output: Contribution to conferencePaper

thermionics
cusps
electron beams
corrugated waveguides
harmonics
2004

Free electron maser experiments based on a coaxial 2d bragg cavity

Konoplev, I. V., McGrane, P., Ronald, K., Cross, A. W., He, W., Whyte, C. G., Phelps, A. D. R. & Robertson, C. W., 2004, p. 569-570. 1 p.

Research output: Contribution to conferencePaper

masers
free electrons
microwaves
cavities
electron beams