Speaker
Dr
Martin Weber
(RWTH Aachen University)
Description
We present results of the CMS Silicon Tracker commissioning and calibration
procedures including full alignment in its final position based on several
million reconstructed tracks, recorded during commissioning of the CMS
experiment with cosmic rays in 2008 and 2009. Outlook for calibration and
alignment with first collision data in 2009-2010 and expected tracking
performance will be given.
The complex system of the CMS all-silicon Tracker with 15148 silicon strip and
1440 silicon pixel modules requires sophisticated calibration and alignment
procedures. The recorded data allow a careful study of Tracker performance and
reconstruction strategies under various operation conditions. In order to
achieve optimal track-parameter resolution, the position and orientation of
its modules need to be determined with a precision of several micrometers. The
ultimate precision has been achieved in a multi-step multi-algorithm procedure
by combining data from the charge deposition in the modules induced by
traversing muons and from survey measurements.
The achieved resolution in all five track parameters is controlled with
data-driven validation of the track parameter measurements near the
interaction region, and tested against prediction with detailed detector
simulation. Systematic effects are investigated.
Summary (Additional text describing your work. Can be pasted here or give an URL to a PDF document):
http://mweber.web.cern.ch/mweber/vci/vci2010_long.pdf
Authors
Domenico Giordano
(CERN)
Dr
Martin Weber
(RWTH Aachen University)
