Speaker
Description
Strong-Field Quantum Electrodynamics (SFQED) experiments probing nonlinear Breit–Wheeler pair production require precise detection and reconstruction of electron–positron pairs generated in ultra-intense laser–matter interactions. We present the application of ALPIDE pixel sensors arranged in a telescope configuration as a compact, high-resolution tracking system for positron detection in high-background environments. The detectors were installed and operated at the FACET-II E-320 experiment as well as at the ELI-NP and APOLLON laser facilities. Several prototype configurations and readout schemes were developed to address the specific requirements of these experiments. Monte Carlo simulations and first experimental results will be presented.