Misalignment effects on the physics performance of the inner tracker upgrade at the ALICE experiment

Sammanfattning: This thesis deals with the physics performance of an approved inner tracker upgrade of the ALICE experiment involving a novel and ultra-thin silicon detector with a cylindrical geometry. During the thesis work, a method was developed in simulations to induce distortions to the detector’s geometry, and the resulting loss in physics performance was evaluated. A strategy was also developed to be able to estimate the strength of the misalignment. Realignment could be performed using the estimated distortion strength to regain as much of the physics performance lost due to the distortions as possible.