Speaker
Prof.
Stefan Karsch
(LMU Munich)
Description
We report on several experimental campaigns on laser-wakefield electron acceleration and radiation generation from laser-driven free electrons. Using a 60 TW-Ti:Sapphire laser, we routinely obtain stable electron beams with energies of up to 0.5 GeV, beam charge of 30-300 pC and bunch durations around 5fs. After passing a miniature undulator, a first all-laser driven X-ray undulator source with photon energies in the water window (300eV) could be demonstrated. Furthermore, the betatron emission from the wiggling motion of the electrons in the plasma wave was characterized, revealing 10^8 photons/shot with typical mean photon energies of 5 keV from a 2 µm source and 10 mrad divergence. This photon beam was used to obtain the first 3-D phase-contrast tomogram of a fly from a laser-driven free-electron source. Finally, we will report on the first tunable, quasi-monochromatic Thomson X-ray source in the energy range from 5 to 35 keV, obtained by colliding tunable 15-50 MeV electron beams off a short laser pulse.
Primary author
Prof.
Stefan Karsch
(LMU Munich)
Co-authors
Dr
Alexander Buck
(MPI für Quantenoptik)
Dr
Andreas Maier
(University of Hamburg)
Dr
Antonia Popp
(LMU Munich)
Johannes Wenz
(LMU Munich)
Konstantin Khrennikov
(LMU Munich)
Dr
Laszlo Veisz
(MPI für Quantenoptik)
Matthias Heigoldt
(LMU Munich)
Dr
Nathaniel Kajumba
(LMU Munich)
Dr
Nicolas Bourgeois
(University of Oxford)
Sebastian Raith
(LMU Munich)
Shao-Wei Chou
(MPI für Quantenoptik)
Prof.
Simon Hooker
(University of Oxford)
Dr
Svetoslav Bajlekov
(University of Oxford)
Dr
Xiancai Xu
(MPI für Quantenoptik)
