%0 Journal Article
%A Wood, Jonathan Christopher
%A Boulton, Lewis
%A Beinortaite, Judita
%A Björklund Svensson, Jonas Halfdan
%A Bohlen, Simon
%A Boyle, Gregory James
%A Garland, Matthew James
%A Gonzalez Caminal, Pau
%A Lindstroem, Carl Andreas
%A Loisch, Gregor
%A Mewes, Steven Mathis
%A Parikh, Trupen
%A Pena Asmus, Felipe Lars
%A Poder, Kristjan
%A Schröder, Sarah
%A Thévenet, Maxence
%A Wesch, Stephan
%A Osterhoff, Jens
%A D'Arcy, Richard
%T Bright electron bunches from a plasma-wakefield accelerator with a steep density down-ramp
%J Nature Communications
%V 17
%N 1
%@ 2041-1723
%C [London]
%I Springer Nature
%M PUBDB-2022-04720
%P 1588
%D 2026
%X High-brightness electron bunches drive fundamental research in particlephysics and photon science. Key to achieving a high brightness is to have a lowtransverse emittance, which ensures that the bunch can be tightly focussed. Inradiofrequency accelerators a low initial emittance can be rapidly degradeddue to space charge forces, which are greatly diminished once the electronbunch attains a relativistic velocity. A plasma accelerator can maintain orders-of-magnitude higher accelerating fields than radiofrequency accelerators,while multiple techniques exist to create a low emittance electron bunchdirectly inside the plasma accelerator structure. Plasma accelerators thereforeoffer a possibility to create high-brightness bunches in wakefields driven evenby low-quality drive bunches. Here we demonstrate the injection and gigavolt-per-metre acceleration of electron bunches with mm-mrad normalised emit-tance, O(10 pC/MeV) spectral density and per-cent-level energy spread, all withexcellent reproducibility.
%F PUB:(DE-HGF)16
%9 Journal Article
%R 10.1038/s41467-026-69283-6
%U https://bib-pubdb1.desy.de/record/482311