Calorimetry for the Future Circular Collider experiments

The Future Circular Collider (FCC) Collaboration is preparing the next generation of experiments in high energy physics. The goal is to collide protons at 100 TeV centre–of–mass energy, seven times higher than at the most powerful existing accelerator, the Large Hadron Collider (LHC). Such machine would extend the research carried out at the LHC including the study of the Higgs boson, the search for the origin of the baryon asymmetry, the mass of neutrinos, and the dark matter. The detectors designed for the FCC experiments need to tackle the harsh conditions of the unprecedented collision energy and luminosity. At the same time, they need to provide precise measurements in a wider range of pseudorapidity than the existing experiments. The focus of this thesis is a design and performance studies of one of the sub-detectors, the electromagnetic calorimeter. Its aim is to measure the energy and the position of electrons, positrons, and photons produced in the collisions. The detector proposed in this thesis combines the precision of the energy measurements with high granularity, a novel concept for the calorimeter based on the liquid argon. It is furthermore insusceptible to radiation. The detector has been studied with the Monte Carlo simulation of single particles passing through the detector. The performance of the detector in those conditions meets the required goal of the energy resolution. This thesis lays the groundwork for further calorimetry studies to be contained in Conceptual Design Report of FCC.