This paper summarizes the work carried out for the experimental study of low–energy nuclear excitation by laser produced plasma at the PALS Prague laser facility. We describe the adaptation and shielding of single–quantum active radiation detectors developed at the IEAP CTU Prague facilitating their operation inside the laser interaction chamber in the vicinity of the plasma target. The goal of this effort is the direct real–time single–quantum detection of plasma soft X–ray radiation with energy above few keV and subsequent identification of the excited nuclear states decay via low–energy gamma rays in highly radiative, strong electromagnetic interference environment.