Affordable Access

Access to the full text

Alignment of the CMS Silicon Tracker during Commissioning with Cosmic Rays

Type
Published Article
Publication Date
Nov 22, 2009
Submission Date
Oct 13, 2009
Identifiers
DOI: 10.1088/1748-0221/5/03/T03009
Source
arXiv
License
Yellow
External links

Abstract

The CMS silicon tracker, consisting of 1440 silicon pixel and 15148 silicon strip detector modules, has been aligned using more than three million cosmic ray charged particles, with additional information from optical surveys. The positions of the modules were determined with respect to cosmic ray trajectories to a precision of 3-4 microns RMS in the barrel and 3-14 microns RMS in the endcap in the most sensitive coordinate. The results have been validated by several methods, including the laser alignment system, and compared with predictions obtained from simulation. Correlated systematic effects have been investigated. The track parameter resolutions obtained with this alignment are close to the design performance.

Report this publication

Statistics

Seen <100 times