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Würzburg 2018 – scientific programme

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AKBP: Arbeitskreis Beschleunigerphysik

AKBP 5: New Accelerator Concepts II

AKBP 5.4: Talk

Tuesday, March 20, 2018, 17:15–17:30, NW-Bau - HS2

Double bunch generation for externally injected plasma wakefield acceleration at FLASHForward — •Sarah Schröder1,2, Alexander Aschikhin1, Richard D’Arcy1, Vladyslav Libov1,2, Kai Ludwig1, Alberto Martinez de la Ossa2, Timon Mehrling1,2, Bernhard Schmidt1, Stephan Wesch1, Johann Zemella1, and Jens Osterhoff11Deutsches Elektronen-Synchrotron DESY — 2Universität Hamburg

Owing to the high electromagnetic field gradients (>GV/m) supported by plasma wakefield acceleration (PWFA), plasma-based particle accelerators have the potential to greatly reduce the size of future accelerators. The FLASHForward experiment will be dedicated to studies of beam-driven plasma wakefield acceleration. It is currently under construction and will be housed in an extension beam line to the FLASH free-electron laser (FEL) facility at DESY. One of the core areas of research at FLASHForward is the preservation of bunch parameters for externally injected beams; a process where two electron bunches are injected into plasma, the first bunch driving a plasma wake and the trailing bunch being accelerated by the resulting fields. A metallic mask, placed in a dispersive beam line section, will be used to generate this double bunch structure with variable lengths and separation.
In this contribution particular emphasis is placed on the shaping of the double bunches in order to demonstrate stable and reproducible beam-driven PWFA. Furthermore, simulations of beam dynamics and the acceleration process in the plasma are presented.

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