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Dresden 2020 – wissenschaftliches Programm

Die DPG-Frühjahrstagung in Dresden musste abgesagt werden! Lesen Sie mehr ...

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AKBP: Arbeitskreis Beschleunigerphysik

AKBP 8: New Accelerator Concepts

AKBP 8.6: Vortrag

Dienstag, 17. März 2020, 15:45–16:00, HSZ 301

Controlled Plasma Generation for Beam-Driven Wakefield Acceleration — •Gabriele Tauscher1,2, Lucas Schaper1, Matthew James Garland1, Bernhard Schmidt1,2, Kristjan Poder1, Lars Goldberg2, Jan-Patrick Schwinkendorf1, Gregory Boyle1, Pardis Niknejadi1, Theresa Brümmer1, Simon Bohlen1,2, Alexander Knetsch1, Martin Meisel1,2, Sarah Schroeder1,2, Bridget Sheeran1,2, Theresa Staufer1, and Jens Osterhoff11Deutsches Elektronen-Synchrotron DESY — 2Hamburg University

Plasma targets required for wakefield acceleration rely on establishing specific electron density distributions in longitudinal and transverse direction to allow for preservation of beam quality during the acceleration of electron bunches. In the FLASHForward project an electron bunch from the FLASH linac drives large amplitude wakefields in a pre-ionised plasma. The plasma can be generated by a multi-TW short-pulse laser or a high-current HV discharge. Especially in complex scenarios, where multiple gas species can be involved, the strength of the plasma generating source has to be adjusted to accommodate for the specific ionisation thresholds to e.g. generate strong gradient down ramps. To assess the plasma density distribution across the target experimentally, targets are investigated by different interferometry and spectroscopy. The comprehension of the underlying processes of laser and discharge induced plasma generation allows us to control and tailor plasma shapes.

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