Stand-alone Cosmic Muon Reconstruction Before Installation of the CMS Silicon Strip Tracker

TL;DR

This paper details the cosmic muon reconstruction process for the CMS silicon strip tracker before its installation, using extensive cosmic ray data to evaluate detector performance in a magnetic field-free environment.

Contribution

It introduces the methods for cosmic muon track reconstruction and performance assessment of the CMS silicon strip tracker prior to installation.

Findings

Reconstructed over 4.7 million cosmic ray events.

Demonstrated effective track and hit reconstruction performance.

Validated detector readiness for subsequent installation phases.

Abstract

The subsystems of the CMS silicon strip tracker were integrated and commissioned at the Tracker Integration Facility (TIF) in the period from November 2006 to July 2007. As part of the commissioning, large samples of cosmic ray data were recorded under various running conditions in the absence of a magnetic field. Cosmic rays detected by scintillation counters were used to trigger the readout of up to 15% of the final silicon strip detector, and over 4.7 million events were recorded. This document describes the cosmic track reconstruction and presents results on the performance of track and hit reconstruction as from dedicated analyses.