PAC2013 - List of Authors (Pollock, B.B.)

Paper	Title	Page
MOPAC21	Tomographic Reconstruction of Electron Trajectories in a Laser-Plasma Accelerator Using Betatron X-Ray Radiation	111
	F. Albert, A.E. Pak, B.B. Pollock, J.E. Ralph LLNL, Livermore, California, USA C.E. Clayton, C. Joshi, K.A. Marsh, J.L. Shaw UCLA, Los Angeles, California, USA
	Funding: This work was performed under the auspices of the U.S. Department of Energy under contract DE-AC52- 07NA27344, and supported by the LLNL LDRD Program under tracking code 13-LW-076. We demonstrate that it is possible to reconstruct in three dimensions the electron trajectories inside the channel of the laser-wakefield accelerator from the angular dependence of the Betatron x-ray spectrum by using an image plate-based spectrometer with differential filtering. The experiments were performed at LLNL using the 200 TW Callisto laser system. 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.

Paper

Title

Page

Tomographic Reconstruction of Electron Trajectories in a Laser-Plasma Accelerator Using Betatron X-Ray Radiation

111

F. Albert, A.E. Pak, B.B. Pollock, J.E. Ralph
LLNL, Livermore, California, USA
C.E. Clayton, C. Joshi, K.A. Marsh, J.L. Shaw
UCLA, Los Angeles, California, USA

Funding: This work was performed under the auspices of the U.S. Department of Energy under contract DE-AC52- 07NA27344, and supported by the LLNL LDRD Program under tracking code 13-LW-076.
We demonstrate that it is possible to reconstruct in three dimensions the electron trajectories inside the channel of the laser-wakefield accelerator from the angular dependence of the Betatron x-ray spectrum by using an image plate-based spectrometer with differential filtering. The experiments were performed at LLNL using the 200 TW Callisto laser system. 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.