Simulation and study of the CMS Endcap Muon alignment scheme
Abstract
The successful operation of the CMS Endcap Muon detector will entail meeting several significant technical challenges. Among these challenges will be the ability to accurately estimate the performance of the Endcap Muon detector and to anticipate or correct any potential problems during the design stage. This thesis presents the simulation and study of the Endcap Muon Alignment Scheme, a component of the Endcap Muon Detector designed to determine and track the location of Cathode Strip Chambers. Information about the performance of the CMS Endcap Alignment System was gathered through an extensive testing of a prototype system and then used to create a simulation to predict the behavior of the system as designed. The results of these simulations indicate that the design of the EMU Alignment System is viable and can successfully reconstruct chamber locations along designated alignment lines throughout the CMS Endcap. A detailed error analysis and subsequent examination of the principle sources of uncertainty across multiple simulations show that the tolerances on components and their calibration are well understood and will ensure the successful reconstruction of CSC chamber positions within approximately 200μm in CMS RΦ and 500μm in CMS Z. In addition, physics studies of single muon events were performed with the general CMS Reconstruction Software (ORCA 5_3_1) to understand CSC misalignment effects on muon track reconstruction and predict how the Alignment System will impact the final determination of muon pt and trigger rates in the Endcap Muon System.
Degree
Ph.D.
Advisors
Gutay, Purdue University.
Subject Area
Particle physics
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