Bonn 2010 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 34: Beschleunigerphysik XII

HK 34.5: Talk

Tuesday, March 16, 2010, 17:50–18:05, HG ÜR 9

Temporal characterization of laser plasma accelerated electron bunches by CTR — •Matthias Heigoldt¹, Antonia Popp¹, Svetoslav Bajlekov², Johannes Wenz¹, Konstantin Krenikov¹, Shao-Wei Chou¹, Raphael Weingartner¹, Simon Hooker², Ferenc Krausz¹, and Stefan Karsch¹ — ¹Max-Planck-Institut für Quantenoptik, Garching, Germany — ²Claredon Laboratory, Univeristy of Oxford, Oxford, UK

Laser driven plasma accelerators offer the prospect of a new source of relativistic electron beams. One of the key parameters to be determined is the temporal profile of the electron bunch. Available experimental data show bunch lengths <30fs, however, best estimates still rely on particle-in-cell simulations predicting durations of ∼10fs.

We report on progress towards measuring the temporal profile of electron bunches from a laser-wakefield accelerator, based on the detection of coherent THZ radiation emitted at a metal-vacuum boundary. The construction of a broadband (2–40µ m ) spectrometer based on pyroelectric detectors as well as a numerical assessment of its capabilities will be presented.