CERN Accelerating science

Published Articles
Title Observation of High Transformer Ratio Plasma Wakefield Acceleration
Author(s) Loisch, Gregor (DESY, Zeuthen) ; Asova, Galina (DESY, Zeuthen ; Sofiya, Inst. Nucl. Res.) ; Boonpornprasert, Prach (DESY, Zeuthen) ; Brinkmann, Reinhard (DESY) ; Chen, Ye (DESY, Zeuthen) ; Engel, Johannes (DESY, Zeuthen) ; Good, James (DESY, Zeuthen) ; Gross, Matthias (DESY, Zeuthen) ; Grüner, Florian (U. Hamburg (main) ; CFEL, Hamburg) ; Huck, Holger (DESY, Zeuthen) Show all 24 authors
Publication 2018
Number of pages 6
In: Phys. Rev. Lett. 121 (2018) 064801
DOI 10.1103/PhysRevLett.121.064801
Subject category Accelerators and Storage Rings
Abstract Particle-beam-driven plasma wakefield acceleration (PWFA) enables various novel high-gradient techniques for powering future compact light-source and high-energy physics applications. Here, a driving particle bunch excites a wakefield response in a plasma medium, which may rapidly accelerate a trailing witness beam. In this Letter, we present the measurement of ratios of acceleration of the witness bunch to deceleration of the driver bunch, the so-called transformer ratio, significantly exceeding the fundamental theoretical and thus far experimental limit of 2 in a PWFA. An electron bunch with ramped current profile was utilized to accelerate a witness bunch with a transformer ratio of 4.60.7+2.2 in a plasma with length 10  cm, also demonstrating stable transport of driver bunches with lengths on the order of the plasma wavelength.
Copyright/License publication: © 2018-2025 authors (License: CC-BY-4.0)

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 Record created 2018-10-19, last modified 2022-08-10


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