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ID: 543347.0, MPI für Physik / MPI für Physik
The ATLAS Inner Detector commissioning and calibration
Authors:
Date of Publication (YYYY-MM-DD):2010
Title of Journal:European Physical Journal C
Journal Abbrev.:Eur.Phys.J.C
Audience:Not Specified
Intended Educational Use:No
Abstract / Description:The ATLAS Inner Detector is a composite tracking system consisting of silicon pixels, silicon strips and straw tubes in a 2 T magnetic field. Its installation was completed in August 2008 and the detector took part in data- taking with single LHC beams and cosmic rays. The initial detector operation, hardware commissioning and in-situ calibrations are described. Tracking performance has been measured with 7.6 million cosmic-ray events, collected using a tracking trigger and reconstructed with modular pattern-recognition and fitting software. The intrinsic hit efficiency and tracking trigger efficiencies are close to 100%. Lorentz angle measurements for both electrons and holes, specific energy-loss calibration and transition radiation turn-on measurements have been performed. Different alignment techniques have been used to reconstruct the detector geometry. After the initial alignment, a transverse impact parameter resolution of 22.1+/-0.9 micron and a relative momentum resolution \sigma(p)/p = (4.83+/-0.16) \times 10-4 GeV-1 \times pT have been measured for high momentum tracks.
Classification / Thesaurus:ATLAS
Comment of the Author/Creator:34 pages, 25 figures
External Publication Status:published
Document Type:Article
Communicated by:N.N.
Affiliations:
Identifiers:LOCALID:MPP-2010-61
URL:http://arXiv.org/abs/arxiv:1004.5293
URL:http://publications.mppmu.mpg.de/?action=search&mp...
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