Alignment of the CMS Silicon Strip Tracker during stand-alone Commissioning

Abstract

The results of the CMS tracker alignment analysis are presented using the data from cosmic tracks, optical survey information, and the laser alignment system at the Tracker Integration Facility at CERN. During several months of operation in the spring and summer of 2007, about five million cosmic track events were collected with a partially active CMS Tracker. This allowed us to perform first alignment of the active silicon modules with the cosmic tracks using three different statistical approaches; validate the survey and laser alignment system performance; and test the stability of Tracker structures under various stresses and temperatures ranging from +15C to -15C. Comparison with simulation shows that the achieved alignment precision in the barrel part of the tracker leads to residual distributions similar to those obtained with a random misalignment of 50 (80) microns in the outer (inner) part of the barrel.

41 pages, 63 postscript figures, submitted to JINST

References in corpus (3)

• Sensor Alignment by Tracks
• Stand-alone Cosmic Muon Reconstruction Before Installation of the CMS Silicon Strip Tracker
• Performance studies of the CMS Strip Tracker before installation

Cited by in corpus (7)

• Alignment of the CMS Silicon Tracker during Commissioning with Cosmic Rays
• Alignment of the CMS tracker with LHC and cosmic ray data
• Stand-alone Cosmic Muon Reconstruction Before Installation of the CMS Silicon Strip Tracker
• Strategies and performance of the CMS silicon tracker alignment during LHC Run 2
• Study of the Global Alignment for the DAMPE Detector
• Validation of Kalman Filter alignment algorithm with cosmic-ray data using a CMS silicon strip tracker endcap
• Mechanical stability of the CMS strip tracker measured with a laser alignment system