Studies of the opto-electronic chain for the LHCb RICH upgrade

The present thesis describes in detail the quality assurance of the photodetectors and related electronics (the so-called Elementary Cells) for the RICH (Ring-Imaging Cherenkov) detectors upgrade of the LHCb experiment, performed on-site at the University of Ferrara. The objective of this thesis is the detailed discussion of the complete quality assurance process, from the development of the experimental test setup together with its software used for acquisition and analysis of measurement data, to the description of actual tests performed on the Elementary Cells and their results.