Bonn 2010 – scientific programme

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T: Fachverband Teilchenphysik

T 85: Beschleunigerphysik VIII

T 85.4: Talk

Wednesday, March 17, 2010, 14:50–15:05, HG ÜR 8

Active control of laser-wakefield-accelerated electrons using magnetic quadrupole lenses — •Raphael Weingartner^1,2, Matthias Fuchs^1,2, Antonia Popp^1,2, Sebastian Raith^1,2, Stefan Becker^1,2, Shao-wei Chou^1,2, Matthias Heigoldt^1,2, Konstantin Khrennikov^1,2, Johannes Wenz^1,2, Benno Zeitler^1,2, Zsuzsanna Major^1,2, Jens Osterhoff^1,2, Ferenc Krausz^1,2, Stefan Karsch^1,2, and Florian Grüner^1,2 — ¹Ludwig Maximilians Universität, München, Deutschland — ²Max-Planck Institute für Quantenoptik, Garching, Deutschland

Laser-wakefield acceleration is maturing into a stable source of ultra-relativistic electron beams. We show experimental data of the active control of these novel beams after their generation by using miniature magnetic quadrupole lenses. These devices address the main challenges of high divergence and pointing fluctuations of several mrad whilst still maintaining the intrinsic advantages of ultrashort pulse duration of around 10 fs and expected low emittance. This technology allows the realization of compact synchrotron sources and is of central importance for future applications such as the table-top free-electron laser (TT-FEL). A next step will involve using such lenses for emittance measurements.