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AKBP: Arbeitskreis Beschleunigerphysik
AKBP 4: Plasmas and Lasers
AKBP 4.1: Gruppenbericht
Dienstag, 21. März 2023, 16:30–17:00, CHE/0183
Large Energy Depletion of a Beam Driver in a Plasma-Wakefield Accelerator — •Felipe Peña1,2, Carl A. Lindstrøm1,3, Judita Beinortaite1,4, Jonas Björklund Svensson1, Lewis Boulton1,5,6, Severin Diederichs1,2, James M. Garland1, Pau González Caminal1,2, Gregor Loisch1,2, Sarah Schröder1, Maxence Thévenet1, Stephan Wesch1, Jonathan Wood1, Jens Osterhoff1, and Richard D’Arcy1 — 1Deutsches Elektronen-Synchrotron DESY, Hamburg, Germany — 2Universität Hamburg, Germany — 3University of Oslo, Norway — 4University College London, UK — 5SUPA, University of Strathclyde, Glasgow, UK — 6The Cockcroft Institute, Daresbury, UK
Beam-driven plasma-wakefield acceleration has the potential to reduce the size and construction cost of large-scale accelerator facilities, by providing accelerating fields orders of magnitude greater than that of conventional accelerating structures. Affordable running costs require demonstration of high energy-transfer efficiency from the wall-plug to the accelerated bunch. For this, drive bunches must be efficiently produced, strong decelerating fields must be sustained for the drive bunches until their energy is depleted, and the resulting accelerating fields must be strongly beam loaded by the trailing bunches. Here we address the second of these points, showing measurements using a 500 MeV drive bunch where (50±7)% of its total energy is deposited into a 20 cm long plasma. This level of energy-transfer efficiency demonstrates that plasma accelerators hold the potential to become competitive with conventional accelerators.