Poster

PUBDB-2023-07906

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Plasma density and ionisation degree evolution with long-term ion motion in a beam-driven plasma-wakefield accelerator

Beinortaite, J. (Corresponding author)DESY* ; Björklund Svensson, J. H.DESY* ; Chappell, J.Extern* ; Garland, M. J.DESY* ; Jones, H.DESY* ; Lindstroem, C. A.DESY* ; Loisch, G.Extern*DESY* ; Pena Asmus, F. L.DESY* ; Schröder, S.DESY* ; Wesch, S.DESY* ; Wing, M.Extern* ; Osterhoff, J.DESY* ; D'Arcy, R.Extern*

2023

Abstract: Beam-driven plasma-wakefield acceleration is a promising avenue for the future design of compact linear accelerators with applications in high-energy physics and photon science. Meeting the luminosity and brilliance demands of current users requires the delivery of thousands of bunches per second: many orders of magnitude beyond the current state-of-the-art of plasma-wakefield accelerators, which typically operate at the Hz-level. As recently explored at FLASHForward, a fundamental limitation for the highest repetition rate is the long-term motion of ions that follows the dissipation of the driven wakefield (R. D'Arcy, et al. Nature 603, 58,62 (2022)). The duration of this ion motion could vary with the mass of the plasma ions, thus significantly decreasing in lighter gas species. To observe this, the understanding of the background processes, such as microsecond-level plasma density evolution of different gases in a capillary, is needed. Here we present the exploration of plasma density evolution together with insights into the estimated ionisation degree.

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Contributing Institute(s):

1. FTX Fachgruppe AST (HH_FH_FTX_AS)
2. Plasma Accelerators (MPA)

Research Program(s):

1. 621 - Accelerator Research and Development (POF4-621) (POF4-621)
2. 6G2 - FLASH (DESY) (POF4-6G2) (POF4-6G2)

Experiment(s):

1. FLASHForward

Appears in the scientific report 2023

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