Extended Data Fig. 3: Electron beam properties at the exit of COXINEL beamline.
From: Seeded free-electron laser driven by a compact laser plasma accelerator
a, Charge Q measured at beamline exit. b,c, Data analysis from last beamline imager after dipole dump. Images are calibrated along horizontal axis into energy, providing with the shot–to–shot energy variation ΔE with respect to the mean central energy (b). Charge density dQ (c) is deduced from Q and ΔE. Data collected during the two days of FEL experiments.
