55 citations · 59 across the 6 of their papers we have counts for
6 papers
High brightness, symmetric electron bunch generation in a plasma wakefield accelerator via a radially-polarized plasma photocathode
James Chappell, Emily Archer, Roman Walczak +1
The plasma photocathode has previously been proposed as a source of ultra-high-brightness electron bunches within plasma accelerators. Here, the scheme is extended by using a radia…
On the localization of the high-intensity region of simultaneous space-time foci
Emily Archer, Bangshan Sun, Roman Walczak +2
Simultaneous space-time focusing (SSTF) is sometimes claimed to reduce the longitudinal extent of the high-intensity region near the focus, in contradiction to the original work on…
Multi-GeV Wakefield Acceleration in a Plasma-Modulated Plasma Accelerator
Johannes J. van de Wetering, Simon M. Hooker, Roman Walczak
We investigate the accelerator stage of a Plasma-Modulated Plasma Accelerator (P-MoPA) [Phys. Rev. Lett. 127, 184801 (2021)] using both the paraxial wave equation and particle-in-c…
Resonant excitation of plasma waves in a plasma channel
Aimee J. Ross, James Chappell, Johannes J. van de Wetering +14
We demonstrate resonant excitation of a plasma wave by a train of short laser pulses guided in a pre-formed plasma channel, for parameters relevant to a plasma-modulated plasma acc…
Excitation and Control of Plasma Wakefields by Multiple Laser Pulses
James Cowley, Christopher Thornton, Christopher Arran +9
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 acceler…
High Power Fibre Laser System for a High Repetition Rate Laserwire
L. J. Nevay, R. Walczak, L. Corner
We present the development of a high power fibre laser system to investigate its suitability for use in a transverse electron beam profile monitor i.e. a laserwire. A system capabl…