Online measurements of gamma radiation from laser-plasma and signal unfolding using a scintillator calorimeter

Abstract

With the development of high-intensity and high-repetition-rate laser systems, it has become crucial to be able to measure and characterize the high-energy gamma radiation from laser-matter interaction in real-time. Therefore, a scintillator-based electromagnetic calorimeter aimed at high-energy electron and photon detection under high-repetition rate is being developed at the ELI Beamlines facility. Together with an ad hoc created unfolding technique, it is possible to reconstruct energies/temperatures of one or two thermal populations present in the radiation. A preliminary test of the device performed at the PALS experimental facility together with the corresponding signal unfolding is here presented.