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Type: Journal article
Title: The ATLAS Inner Detector commissioning and calibration
Author: The ATLAS Collaboration
Aad, G.
Citation: European Physical Journal C: Particles and Fields, 2010; 70(3):787-821
Publisher: Springer-Verlag
Issue Date: 2010
ISSN: 1434-6044
Statement of
G. Aad ... P. Jackson … L. Lee … M. J. White … et al. (The ATLAS Collaboration)
Abstract: 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 insitu 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 μm and a relative momentum resolution σp/p = (4.83 ± 0.16) × 10⁻⁴ GeV⁻¹ ×pT have been measured for high momentum tracks.
Rights: © CERN for the benefit of the ATLAS collaboration 2010. Open Access This article is distributed under the terms of the Creative Commons Attribution Noncommercial License which permits any noncommercial use, distribution, and reproduction in any medium, provided the original author(s) and source are credited.
RMID: 0020133268
DOI: 10.1140/epjc/s10052-010-1366-7
Appears in Collections:Physics publications

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