Unit:
Department of PhysicsLibrary of the School of Science
Author:
Grigoras Apollon-Spyridon
Supervisors info:
Κωνσταντίνος Θεοφιλάτος Αναπληρωτής Καθηγητής Τμήμα Φυσικής ΕΚΠΑ
Original Title:
Μελέτη του Πρώτου Επιπέδου Σκανδαλισμού Ηλεκτρονίων και Φωτονίων για την Αναβάθμιση Δεύτερης Φάσης του Ανιχνευτή CMS στο CERN
Translated title:
Study of the Level 1 Triggering of Electrons and Photons for the Phase 2 Upgrade of the CMS Detector at CERN
Summary:
LHC is characterised by a particularly high rate of events. In 2018, the luminosity recorded by CMS reached 2.1 * 10^34 cm^(-2)s^(-1) events, while the upgrade scheduled for 2027 will see a significant increase in that number. The so called Phase 2 upgrade of the LHC (HL-LHC) is predicted to reach a luminosity of 7.5 * 10^34 cm^(-2)s^(-1). In order to handle such large volumes of data, a system capable of quickly selecting events with the highest possible physical significance is required. This is what we call the Level 1 Trigger. The luminosity increase demands an upgrade to the trigger, both on a hardware and on a software level. In this thesis, we will describe the characteristics of some of the new algorithms for the electromagnetic (e/γ) trigger in CMS. To that end we will present the results of simulations, mostly efficiency and rate curves of various triggering algorithms. These diagrams are relevant to the triggering of electrons and photons regardless of their origin, as well as the triggering of a Z'->ee Physics signal.
Main subject category:
Science
Keywords:
Particle Physics, CMS, CERN, Trigger, Triggering, Level 1 Trigger, Simulation, Z prime
