Irradiation Testing of Silicon Sensors for Future CMS Upgrades

This thesis addresses critical challenges for the High-Luminosity Large Hadron Collider (HL-LHC) at CERN. It focuses on two key areas: validating the radiation hardness of silicon sensors for the upgraded Compact Muon Solenoid (CMS) tracker and evaluating ultrafast silicon devices for advanced timing applications.

The first part of the research assesses new silicon sensors designed for the CMS Phase-2 upgrade, confirming their robustness against the high radiation levels anticipated at the HL-LHC. The second part investigates AC-coupled Resistive Silicon Devices (AC-RSDs) for future 4D tracking detectors. Through extensive electrical characterization—including IV, CV, and transient current technique (TCT) measurements—before and after irradiation with protons and neutrons, the study demonstrates the promising radiation hardness and charge sharing properties of AC-RSDs. These findings are crucial for developing detectors capable of operating effectively in the extreme radiation environments of future colliders.