Emittance preservation in a plasma-wakefield accelerator

C. A. Lindstrøm (), J. Beinortaitė, J. Björklund Svensson, L. Boulton, J. Chappell, S. Diederichs, B. Foster, J. M. Garland, P. González Caminal, G. Loisch, F. Peña, S. Schröder, M. Thévenet, S. Wesch, M. Wing, J. C. Wood, R. D’Arcy and J. Osterhoff
Additional contact information
C. A. Lindstrøm: Deutsches Elektronen-Synchrotron DESY
J. Beinortaitė: Deutsches Elektronen-Synchrotron DESY
J. Björklund Svensson: Deutsches Elektronen-Synchrotron DESY
L. Boulton: Deutsches Elektronen-Synchrotron DESY
J. Chappell: University College London
S. Diederichs: Deutsches Elektronen-Synchrotron DESY
B. Foster: University of Oxford
J. M. Garland: Deutsches Elektronen-Synchrotron DESY
P. González Caminal: Deutsches Elektronen-Synchrotron DESY
G. Loisch: Deutsches Elektronen-Synchrotron DESY
F. Peña: Deutsches Elektronen-Synchrotron DESY
S. Schröder: Deutsches Elektronen-Synchrotron DESY
M. Thévenet: Deutsches Elektronen-Synchrotron DESY
S. Wesch: Deutsches Elektronen-Synchrotron DESY
M. Wing: Deutsches Elektronen-Synchrotron DESY
J. C. Wood: Deutsches Elektronen-Synchrotron DESY
R. D’Arcy: Deutsches Elektronen-Synchrotron DESY
J. Osterhoff: Deutsches Elektronen-Synchrotron DESY

Nature Communications, 2024, vol. 15, issue 1, 1-10

Abstract: Abstract Radio-frequency particle accelerators are engines of discovery, powering high-energy physics and photon science, but are also large and expensive due to their limited accelerating fields. Plasma-wakefield accelerators (PWFAs) provide orders-of-magnitude stronger fields in the charge-density wave behind a particle bunch travelling in a plasma, promising particle accelerators of greatly reduced size and cost. However, PWFAs can easily degrade the beam quality of the bunches they accelerate. Emittance, which determines how tightly beams can be focused, is a critical beam quality in for instance colliders and free-electron lasers, but is particularly prone to degradation. We demonstrate, for the first time, emittance preservation in a high-gradient and high-efficiency PWFA while simultaneously preserving charge and energy spread. This establishes that PWFAs can accelerate without degradation—an essential step toward energy boosters in photon science and multistage facilities for compact high-energy particle colliders.

Date: 2024
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DOI: 10.1038/s41467-024-50320-1

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