Dr Colin Whyte

Principal Research Fellow



8-fold helically corrugated interaction region for high power gyroresonant THz sources
Donaldson Craig R, Zhang Liang, Harris Michael, Beardsley Matthew J, Huggard Peter G, Whyte Colin G, Cross Adrian W, He Wenlong
IEEE Electron Device Letters (2021)
Numerical and experimental validation of the passive performance of a co-harmonic gyro-multiplier interaction region
Constable David A, Phelps Alan D R, Whyte Colin G, He Wenlong, Cross Adrian W, Ronald Kevin
IEEE Transactions on Microwave Theory and Techniques , pp. 1-9 (2021)
Anomalous beam transport through gabor (plasma) lens prototype
Nonnenmacher Toby, Dascalu Titus-Stefan, Bingham Robert, Cheung Chung Lim, Lau Hin-Tung, Long Ken, Pozimski Jürgen, Whyte Colin
Applied Sciences Vol 11 (2021)
Low loss transmission line for a 3.4-kW, 93-GHz gyro-traveling-wave amplifier
Donaldson Craig R, Zhang Liang, He Wenlong, Cross Adrian W, Ronald Kevin, Whyte Colin G
IEEE Transactions on Electron Devices Vol 68, pp. 364-368 (2021)
LhARA : the laser-hybrid accelerator for radiobiological applications
Aymar Galen, Becker Tobias, Boogert Stewart, Borghesi Marco, Bingham Robert, Brenner Ceri, Burrows Philip N, Ettlinger Oliver C, Dascalu Titus-Stefan, Gibson Stephen, Greenshaw Timothy, Gruber Sylvia, Gujral Dorothy, Hardiman Claire, Hughes Jonathan, Jones W G, Kirkby Karen, Kurup Ajit, Lagrange Jean-Baptiste, Long Kenneth R, Luk Wayne, Matheson John, McKenna P, Mclauchlan Ruth, Najmudin Zulfikar, Lau Hin T, Parsons Jason L, Pasternak Jaroslaw, Pozimski Juergen, Prise Kevin, Puchalska Monika, Ratoff Peter, Schettino Giuseppe, Shields William, Smith Susan, Thomason John, Towe Stephen, Weightman Peter, Whyte Colin, Xiao Rachel
Frontiers in Physics, Medical Physics and Imaging Vol 8 (2020)
Demonstration of efficient beam-wave interaction for a MW-level 48 GHz gyroklystron amplifier
Nix L J R, Zhang L, He W, Donaldson C R, Ronald K, Cross A W, Whyte C G
Physics of Plasmas Vol 27 (2020)

More publications

Professional activities

Member of programme committee
IEEE international Conference on Plasma Science
Member of programme committee
STFC (External organisation)
IEEE Transactions on Electron Devices (Journal)
Peer reviewer
IEEE Journal of the Electron Devices Society (Journal)
Peer reviewer
International MICE Collaboration (External organisation)

More professional activities


Phase Locked High Powered Microwave Sources
Cross, Adrian (Principal Investigator) Robertson, Craig (Research Co-investigator) Whyte, Colin (Research Co-investigator) Donaldson, Craig (Researcher)
01-Jan-2020 - 30-Jan-2022
High Powered Electro-Magnetic (HPEM) Amplifiers to generate smart waveforms for long range in-band Radio Frequency effects (FA9550-19-1-7011)
Ronald, Kevin (Principal Investigator) Robertson, Craig (Research Co-investigator) Whyte, Colin (Research Co-investigator) Young, Alan (Research Co-investigator)
High Powered Electro-Magnetic (HPEM) Amplifiers to generate smart waveforms for long range in-band Radio Frequency effects
01-Jan-2019 - 31-Jan-2022
Parametric Wave Coupling and Non-Linear Mixing in Plasma
Ronald, Kevin (Principal Investigator) Bingham, Robert (Co-investigator) Eliasson, Bengt (Co-investigator) Phelps, Alan (Co-investigator) Speirs, David (Researcher) Whyte, Colin (Researcher)
01-Jan-2017 - 31-Jan-2020
CW operation of 94GHz Gyro-TWA for telecommunications applications (IPS Proposal%)
Cross, Adrian (Principal Investigator) He, Wenlong (Co-investigator) Whyte, Colin (Co-investigator) Zhang, Liang (Research Co-investigator)
"This proposal will develop the world's highest power (kW), broadest instantaneous bandwidth, frequency agile amplifiers operating in the mm-wave/terahertz range. The gyro-amplifiers offers a unique opportunity to fill a long standing gap in the generation of high power coherent millimetre and sub millimetre wave radiation with its promise of amplification with an unprecedented 20% instantaneous bandwidth and an unrivalled power of 5kW at 94 GHz. Building on the recent success of W He et al PRL 2013, 110, art 165101, 2013, the mm/sub-mm wave gyro-TWA will enable a paradigm shift in what is achievable for a ground based, cellular telecommunications network by providing tera-bit data rates. This is possible due to the fact that the wireless gyro-TWA operating at sub-THz frequencies does not need to use opto-electronic components currently limiting data rates of optical schemes.

Another major area of development is the possibility of exploiting the world leading gyro-TWA to be used in Electron Paramagnetic Resonance (EPR) and Dynamic Nuclear Polarisation (DNP) spectroscopy which is currently hampered by the lack of high power sources and especially broadband amplifiers of terahertz radiation.

In addition the gyro-TWA would be an ideal source for cloud profiling radar and the detection of atmospheric pollutants because the atmospheric absorption, penetration and scattering losses, practical stand-off systems require considerable power, typically hundreds of watts. Other applications include high frequency long range security imaging, space situational awareness (detecting space debris), terrain mapping (volcano monitoring), radar and long range, high bandwidth, line of sight communications and real time video-rate detection of hidden explosives and illegal drugs."

Dr. Liang Zhang is leading the design of the Cusp electron gun and playing a crucial role in light of Dr. Wenlong He accepting a Professorship at Schenzen University, P.R. China.
01-Jan-2017 - 31-Jan-2020
CW operation of 94GHz Gyro-TWA for telecommunications applications
Donaldson, Craig (Researcher) Cross, Adrian (Principal Investigator) Whyte, Colin (CoI) Zhang, Liang (Research Co-investigator) He, Wenlong (CoI)
01-Jan-2017 - 31-Jan-2020
MICE Ionization-Cooling Demonstration
Ronald, Kevin (Principal Investigator) Whyte, Colin (Co-investigator) Young, Alan (Research Co-investigator)
"The Neutrino Factory is a possible future accelerator facility that creates beams of neutrinos from the decays of muons in a storage ring. The neutrino beams from a Neutrino Factory would have the highest intensity and can be controlled with unprecedented accuracy. For these reasons, the Neutrino Factory has the potential to discover measurable differences between neutrino and antineutrino oscillations, which could be the key to understanding the puzzle of the matter-antimatter asymmetry of the universe. This phenomenon, known as CP violation, has been observed in the quark sector but has never been seen in the neutrino sector. A future Neutrino Factory would determine CP violation in the neutrino sector with the best possible accuracy. Furthermore, a Neutrino factory could be used as a first stage before the construction of a Muon Collider, which could be used to measure the properties of the Higgs boson with the ultimate precision, and could potentially reach energies of up to 6 TeV, in order to explore new physics phenomena at the highest energy frontier.

Both the Neutrino Factory and a Muon Collider rely on the acceleration of muons. To be able to create muon accelerator facilities, we require to reduce the size of the muon beam so that it may be accelerated. Since muons decay within 2 microseconds in their own rest frame, the only known way to reduce the phase space of the muon beam before the muons decay is to use the concept of ionisation cooling, in which the muons lose energy in an absorber such as liquid hydrogen or lithium hydride (LiH) and then recover the longitudinal component of the momentum by accelerating them using RF cavities. The international Muon Ionization Cooling Experiment (MICE) is an engineering demonstration of the concept of ionisation cooling. This experiment is being built at the Rutherford Appleton Laboratory, in which a beam of muons will be cooled in a muon cooling cell consisting of three absorbers and two RF cavities inside the field of two focus coil magnets. The emittance of the beam is measured before and after the cooling channel using a scintillating fibre tracker inside a superconducting solenoid, and the muons are identified using time-of-flight detectors, a Cherenkov detector and a calorimeter system consisting of a scintillating fibre-lead pre-shower detector (named the KL) and a totally active scintillating detector, called the Electron Muon Ranger (EMR).

In this proposal we aim to perform measurements of emittance reduction, without RF cavities (MICE step IV) and perform the final demonstration of ionisation cooling with RF cavities. This proposal is a bid for 42 months funding from Oct 2016 to March 2020, supporting academic and student effort over that period and research staff from the end of the bridging support that ends in December 2016."
01-Jan-2017 - 30-Jan-2021

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