Il dRICH dell'esperimento ePIC a EIC. Caratterizzazione dell'elettronica di lettura dei SiPM

The Electron Ion Collider (EIC) it’s electron/positron - ion ring accelerator planned to be built onto the already existing Relativistic Heavy Ion Collider (RHIC) facility in Brook Heaven, Long Island (NY), and it’s foreseen to be operative since the earliest part of the upcoming decade (30′). This new particle acceleration machine due to its high luminosity 1034 cm−2s−1, high polarization particle beams ∼ 70% and wide √s = 20 to 141 GeV will allow physicians to produce snapshots of those particles’ internal structure like a CT scanner for atoms for small xB, and look the inside distributions (i.e. spin, momentum) for the sea quark and gluons that are confined in the hadron. The 3D images obtained will mark the path to validate theories which are trying to answer the interactions at small xB. To achieve those goals a new general purpose 4π detector will be built on one of two foreseen interactions points at EIC. The Electron Proton Ion Collider (ePIC) will be organized into a central detector with a cylindrical symmetry around the interaction point, a Lepton End-cap and an Hadron End-cap. This thesis has its focus on the Dual Radiator Imaging Cerenkov (dRICH) in the Hadron End-cap, which aim to do the Particle IDentification (PID) for the charged particles produced in the interaction within 1.5 < η < 3.5. In order to detect the Cherenkov photons rings, Silicon Photon Multipliers (SiPMs) are under R&D for their use in the dual RICH. The electronics readout for these photo-sensors will be based on the ASIC (Application Specific Integrated Circuit) ALCOR (A Low power Chip for Optical sensors Readout). The work here presented will cover the characterization of this ASIC through the anal- ysis of the data collected during the 2022 Test Beam at the Positron Syncrontron (PS) at CERN, and the data obtained with the Setup in Turin. Furthermore, an entire chapter will be dedicated for the structure and organization of the new highly improved dRICH SiPM sensors and their Front End Electronics (FEE) readout, ready to be tested along with the dRICH prototype in a test beam in October 2023, at the PS. This thesis will also cover some of the results obtained August 2023 at the T10 facility of the CERN-PS, where the dRICH prototype has been tested with the MAPMT (Multi Anode Photo Multiplier Tubes) photo-sensors and a Front-End electronics based on the ASIC MAROC. Several aerogel from many producers around the world were tested, with the target to reach a better understanding on the properties of these radiators.