Dresden 2014 – wissenschaftliches Programm
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BE: Beschleunigerphysik
BE 3: New Accelerator Concepts
BE 3.8: Vortrag
Dienstag, 1. April 2014, 12:00–12:15, MOL 213
Towards high transformer ratios for plasma wakefield acceleration at PITZ — •Galina Asova1, Anne Oppelt2, Frank Stephan2, and Thomas Vinatier3 — 1INRNE-BAS, Sofia, Bulgaria — 2DESY, Zeuthen, Germany — 3LAL, Orsay, France
In the middle of 2014 the Photo-Injector Test facility at DESY, Zeuthen site, will be extended with a plasma chamber that will be used to study plasma wakefield acceleration, starting with the self-modulation of the electron beam in the plasma. Later on, an electron bunch constituted out of four Gaussian sub-pulses with ramped charge structure will be used to resonantly drive the plasma wave accelerating a trailing probe pulse within the same bunch. The stacked pulse structure with increasing charge gives the possibility to reach high transformer ratios for the energy transfer to the probe pulse.
In order to achieve high-density plasma waves those pulses need to be longitudinally compressed before entering the plasma which imposes stringent requirements towards the longitudinal parameters of the electron bunch. This work concentrates on the possibilities to preserve the ramped charge structure from the photocathode until the bunch compressor while satisfying in the best manner the requirements of the bunch compressor.