Speaker
Dr
Petra Merkel
(Purdue University)
Description
The CMS silicon pixel and strip tracker is at the core of every physics analysis in CMS. We present its performance during the first three years of LHC data taking. From the monitoring of its basic observables to the vertexing and tracking performance at analysis level we give a broad overview of the tracker's behavior. Special focus will be put on the dependence of its performance on the increasing pileup conditions as the beam parameters in the LHC get more and more intense. We also present the alignment algorithm, which has about 200,000 free parameters and allows for movement of the large and small structures as well as bows and kinks down to sensor level, and which has been fine tuned and adapted to the high precision needs of the CMS physics programme.
for the collaboration
CMS
Primary author
Dr
Petra Merkel
(Purdue University)
