Dresden 2013 – wissenschaftliches Programm
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T: Fachverband Teilchenphysik
T 121: Beschleunigerphysik VIII (PWA II)
T 121.3: Vortrag
Dienstag, 5. März 2013, 14:30–14:45, WIL-C205
Trojan Horse Underdense Plasma Photocathode Acceleration — •Oliver Karger1,2, Thomas Königstein3, Georg Pretzler3, James B. Rosenzweig4, and Bernhard Hidding1,2,4 — 1Institut für Experimentalphysik, Universität Hamburg — 2DESY, FLA Arbeitsbereich Beschleunigerphysik, Hamburg — 3Institut für Laser- und Plasmaphysik, Heinrich-Heine-Universität Düsseldorf — 4Department of Physics and Astronomy, University of California, Los Angeles
Relativistic electron beams with small emittance and size are needed for advanced applications such as free electron lasers (FEL) and other coherent light sources in the x-ray regime. Present laser plasma acceleration schemes are hardly able to provide electron beams of sufficient quality on a stable level. The concept of underdense plasma photocathode acceleration uses a beam-driven plasma wave in a two component gas mixture consisting a low ionisation threshold medium (LIT) and a high ionisation threshold medium (HIT) and a low-energy laser pulse. Shapeable electron bunches with sub-fs-length and unprecedented normalized emittance down to 10−9 m rad can be produced. Based on this method, laboratory-sized-experimental setups may enable performance much better than today’s conventional coherent hard x-ray sources. The presentation will discuss the basic concept, shows recent numero-analytical results and the R&D towards experimental realization.
Reference: PRL 108, 035001 (2012)