SMuK 2023 – scientific programme
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AKBP: Arbeitskreis Beschleunigerphysik
AKBP 15: New Accelerator Concepts
AKBP 15.5: Talk
Thursday, March 23, 2023, 16:30–16:45, CHE/0184
Plasma Density Evolution Background to the Ion-motion Recovery in a Beam-driven Plasma-wakefield Accelerator — •Judita Beinortaite1,2, Jonas Björklund Svensson1, James Chappell3, Matthew James Garland1, Harry Jones1, Carl A. Lindstrøm1, Gregor Loisch1, Felipe Peña1,4, Sarah Schröder1, Stephan Wesch1, Matthew Wing2, Jens Osterhoff1, and Richard D'Arcy1 — 1Deutsches Elektronen-Synchrotron DESY, Hamburg, Germany — 2University College London, London, UK — 3University of Oxford, Oxford, UK — 4Universität Hamburg, Hamburg, Germany
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 first steps of exploring this plasma evolution.