3–7 Jul 2011
ETH Zurich, Switzerland
Europe/Zurich timezone

Calibration and Performance of the precision chambers of the ATLAS muon spectrometer.

4 Jul 2011, 17:43
1m
HG E7 (ETH Zurich, Switzerland)

HG E7

ETH Zurich, Switzerland

www.ethz.ch www.psi.ch
Poster presentation Detector Systems Poster Mini Talks III

Speaker

Dr Felix Rauscher (Ludwig-Maximilians-Universität München)

Description

The ATLAS muon spectrometer consists of a system of precision tracking and trigger chambers embedded in a 2T magnetic field generated by three large air‐core superconducting toroids. The precision Monitored Drift Tube (MDT) chambers measure the track sagitta up to a pseudo‐rapidity of 2.7 with a 50 μm uncertainty yielding a design muon transverse momentum resolution of 10% at 1 TeV. Muon tracking is augmented in the very forward region by Cathode Strip Chambers (CSC). The calibration program, essential to achieve the spectrometer design performance and physics reach, is conducted at three worldwide computing centers. These centers each receive a dedicated High Level Trigger data stream that enables high statistics based determination of T0's and drift‐time to drift‐space relations. During the first year of data taking a system of periodic calibration updates has been established. The calibration algorithms, methods and tools and performance results for this first year of LHC collision data collected by the muon spectrometer will be presented.

Primary authors

Dr Felix Rauscher (Ludwig-Maximilians-Universität München) cesare bini (Sapienza Università and INFN Roma)

Presentation materials