Speaker
Dr
Monica Verducci
(European Organization for Nuclear Research (CERN))
Description
The size and complexity of LHC experiments raise unprecedented challenges not only in
terms of detector design, construction and operation, but also in terms of software
models and data persistency. One of the more challenging tasks is the calibration of
the 375000 Monitored Drift Tubes, that will be used as precision tracking detectors
in the Muon Spectrometer of the ATLAS experiment. An accurate knowledge of the
space-time relation is needed to reach the design average resolution of 80 microns.
The MDT calibration software has been designed to extract the space-time relation
from the data themselves, through the so-called auto-calibration procedure, to store
and retrieve the relevant information from the conditions database, and to properly
apply it to calibrate the hits to be used by the reconstruction algorithms, taking
into account corrections for known effects like temperature and magnetic field. We
review the design of the MDT calibration software for ATLAS and present performance
results obtained with detailed GEANT4-based simulation and real data from the recent
combined test beam. We discuss the implementation of the conditions database for MDT
calibration data in the framework proposed by the LHC Computing Grid (LCG). Finally,
we present early results from detector commissioning with cosmic ray events and plans
for the ATLAS Computing System Commissioning test in 2006.
Primary authors
Dr
Domizia Orestano
(Universita di Roma Tre)
Dr
Fabrizio Petrucci
(INFN - Sezione Roma III Universita di Roma Tre)
Prof.
Joseph Rothberg
(Experimental Elementary Particle Physics University of Washington)
Dr
Manuela Cirilli
(Harrison M. Randall Laboratory University of Michigan)
Dr
Martin Woudstra
(Lawrence Berkeley National Laboratory (LBNL))
Dr
Monica Verducci
(European Organization for Nuclear Research (CERN))
Dr
Niels van Eldik
(NIKHEF)
Dr
Oliver Kortner
(Experimentalphysik Sektion Physik Ludwig-Maximilians-Universitat Munchen)
Dr
Zdenko van Kesteren
(NIKHEF)
