Speaker
Dr
Felicie Albert
(Lawrence Livermore National Laboratory)
Description
Experiments performed using the 200 TW Callisto laser system at LLNL to produce GeV-class electron beams and keV Betatron x-rays are reported. The laser was focused into various gas cells with sizes ranging from 3 to 10 mm that contained a mixure of gases (He, N, Ar). We demonstrate that it is possible to reconstruct tomographycally electron trajectories inside the channel of the laser-wakefield accelerator fom the angular dependence of the Betatron x-ray spectrum, using an image plate-based spectrometer with differential filtering. Experimental results are benchmarked against a code that solves the equation of motion of electrons oscillating in the plasma wake and by calculating the corresponding x-ray radiation spectrum and profile. This combined single-shot, simultaneous spectral and spatial x-ray analysis allows for a 3D reconstruction of electron trajectories in the plasma with micrometer resolution.
Primary author
Dr
Felicie Albert
(Lawrence Livermore National Laboratory)
Co-authors
Dr
Arthur Pak
(LLNL)
Dr
Bradley Pollock
(LLNL)
Prof.
Chan Joshi
(UCLA)
Dr
Christopher Clayton
(UCLA)
Dr
David Alessi
(LLNL)
Ms
Jessica Shaw
(UCLA)
Dr
Joseph Ralph
(LLNL)
Mr
Ken Marsh
(UCLA)
Dr
Siegfried Glenzer
(SLAC)
Dr
Yu-Hsin Chen
(LLNL)
