Laser-plasma accelerator group

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High brightness, symmetric electron bunch generation in a plasma wakefield accelerator via a radially-polarized plasma photocathode

ArXiv 2505.11387 (2025)

Authors:

James Chappell, Emily Archer, Roman Walczak, Simon Hooker
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Experimental Observation of the Motion of Ions in a Resonantly Driven Plasma Wakefield Accelerator

Physical Review Letters American Physical Society (APS) 134:15 (2025) 155001

Authors:

M Turner, E Walter, C Amoedo, N Torrado, N Lopes, A Sublet, M Bergamaschi, J Pucek, J Mezger, N van Gils, L Verra, G Zevi Della Porta, J Farmer, A Clairembaud, F Pannell, E Gschwendtner, P Muggli, R Agnello, CC Ahdida, Y Andrebe, O Apsimon, R Apsimon, JM Arnesano, V Bencini, P Blanchard, KP Blum, PN Burrows, B Buttenschön, A Caldwell, M Chung, DA Cooke, C Davut, G Demeter, AC Dexter, S Doebert, A Fasoli, R Fonseca, I Furno, E Granados, M Granetzny, T Graubner, O Grulke, E Guran, J Henderson, F Jenko, MA Kedves, F Kraus, M Krupa, T Lefevre, L Liang, S Liu, K Lotov, M Martinez Calderon, S Mazzoni, PI Morales Guzmán, M Moreira, T Nechaeva, N Okhotnikov, C Pakuza, A Pardons, K Pepitone, E Poimendidou, A Pukhov, RL Ramjiawan, L Ranc, S Rey, R Rossel, H Saberi, O Schmitz, E Senes, F Silva, L Silva, B Spear, C Stollberg, C Swain, A Topaloudis, P Tuev, F Velotti, V Verzilov, J Vieira, C Welsch, M Wendt, M Wing, J Wolfenden, B Woolley, G Xia, V Yarygova, M Zepp
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Contribution of ALEGRO to the Update of the European Strategy on Particle Physics

(2025)

Authors:

B Cros, P Muggli, L Corner, J Farmer, M Ferarrio, S Gessner, L Gizzi, E Gschwendtner, M Hogan, S Hooker, W Leemans, C Lindstrøm, J List, A Maier, J Osterhoff, P Piot, J Power, I Pogorelsky, M Turner, J-L Vay, J Wood

Quasi-monoenergetic multi-GeV electron acceleration in a plasma waveguide

ArXiv 2503.22472 (2025)

Authors:

Ronan Lahaye, Kosta Oubrerie, Olena Kononenko, Julien Gautier, Igor A Andriyash, Cedric Thaury
Details from ArXiV

On the localization of the high-intensity region of simultaneous space-time foci

Optics Express Optica Publishing Group 33:4 (2025) 7645-7645

Authors:

Emily Archer, Bangshan Sun, Roman Walczak, Martin Booth, Simon Hooker

Abstract:

<jats:p>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 this topic. Here we seek to address this confusion by using numerical and analytical methods to investigate the degree of localization of the spatio-temporal intensity of an SSTF pulse. The analytical method is found to be in excellent agreement with numerical calculations and yields, for bi-Gaussian input pulses, expressions for the three-dimensional spatio-temporal intensity profile of the SSTF pulse, and for the on-axis bandwidth, pulse duration, and pulse-front tilt (PFT) of the SSTF pulse. To provide further insight, we propose a method for determining the transverse input profile of a non-SSTF pulse with equivalent spatial focusing. We find that the longitudinal variations of the peak axial intensities of the SSTF and spatially equivalent (SE) pulses are the same, apart from a constant factor, and hence that SSTF does not constrain the region of high intensity more than a non-SSTF pulse with equivalent focusing. We demonstrate that a simplistic method for calculating the pulse intensity exaggerates the degree of intensity localization, unless the spatio-temporal couplings inherent to SSTF pulses are accounted for.</jats:p>
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