Prof Roman Walczak: Publications

Hydrodynamic, Optically-Field-Ionized (HOFI) Plasma Channels

(2018)

Authors:

Robert Shalloo, Christopher Arran, Laura Corner, James Holloway, Jakob Jonnerby, Roman Walczak, Howard Milchberg, Simon Hooker

Excitation and Control of Plasma Wakefields by Multiple Laser Pulses

(2017)

Authors:

James Cowley, Christopher Thornton, Christopher Arran, Robert J Shalloo, Laura Corner, Gavin Cheung, Christopher D Gregory, Stuart PD Mangles, Nicholas H Matlis, Daniel R Symes, Roman Walczak, Simon M Hooker

Excitation and Control of Plasma Wakefields by Multiple Laser Pulses

PHYSICAL REVIEW ACCELERATORS AND BEAMS 20:7 (2017) ARTN 044802

Authors:

J Cowley, C Thornton, C Arran, RJ Shalloo, L Corner, G Cheung, CD Gregory, SPD Mangles, NH Matlis, DR Symes, R Walczak, SM Hooker

Excitation and control of plasma wakefields by multiple laser pulses

Physical Review Letters American Physical Society 119:4 (2017) 044802

Authors:

J Cowley, C Thornton, C Arran, RJ Shalloo, L Corner, G Cheung, CD Gregory, SPD Mangles, NH Matlis, R Walczak, Simon Hooker

Abstract:

We demonstrate experimentally the resonant excitation of plasma waves by trains of laser pulses. We also take an important first step to achieving an energy recovery plasma accelerator by showing that a plasma wave can be damped by an out-of-resonance trailing laser pulse. The measured laser wakefields are found to be in excellent agreement with analytical and numerical models of wakefield excitation in the linear regime. Our results indicate a promising direction for achieving highly controlled, GeV-scale laser-plasma accelerators operating at multikilohertz repetition rates.

Horizon 2020 EuPRAXIA design study

Journal of Physics: Conference Series IOP Publishing 874:1 (2017)

Authors:

PA Walker, PD Alesini, AS Alexandrova, MP Anania, NE Andreev, I Andriyash, A Aschikhin, RW Assmann, T Audet, A Bacci, IF Barna, A Beaton, A Beck, A Beluze, A Bernhard, S Bielawski, FG Bisesto, J Boedewadt, F Brandi, O Bringer, R Brinkmann, E Bründermann, M Büscher, M Bussmann, GC Bussolino, A Chance, JC Chanteloup, M Chen, E Chiadroni, A Cianchi, J Clarke, J Cole, ME Couprie, M Croia, B Cros, J Dale, G Dattoli, N Delerue, O Delferriere, P Delinikolas, J Dias, U Dorda, K Ertel, A Ferran Pousa, M Ferrario, F Filippi, J Fils, R Fiorito, RA Fonseca, M Galimberti

Abstract:

The Horizon 2020 Project EuPRAXIA ("European Plasma Research Accelerator with eXcellence In Applications") is preparing a conceptual design report of a highly compact and cost-effective European facility with multi-GeV electron beams using plasma as the acceleration medium. The accelerator facility will be based on a laser and/or a beam driven plasma acceleration approach and will be used for photon science, high-energy physics (HEP) detector tests, and other applications such as compact X-ray sources for medical imaging or material processing. EuPRAXIA started in November 2015 and will deliver the design report in October 2019. EuPRAXIA aims to be included on the ESFRI roadmap in 2020.

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