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The ATLAS Inner Detector commissioning and calibration

CollaborationWith : Abdelalim Aly, Ahmed Aly / Alexandre, Gauthier / Backes, Moritz / Bell, William / Blondel, Alain / Bucci, Francesca / Clark, Allan Geoffrey / Dao, Valerio / Ferrere, Didier / Gadomski, Szymon / Garcia Navarro, Jose Enrique / Gonzalez Sevilla, Sergio / Goulette, Marc / Hamilton, Andrew / Lister, Alison / Martin Dit Latour, Bertrand / Mora Herrera, Maria Clemencia Rosario / Pasztor, Gabriella / Pohl, Martin / Robichaud-Veronneau, Andrée / Rosselet, Laurent / Urquijo, Phillip / Wu, Xin
Published in European Physical Journal. C. 2010, vol. 70, no. 3, p. 787-821
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 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 μm and a relative momentum resolution σ p /p=(4.83±0.16)×10−4 GeV−1×p T have been measured for high momentum tracks.
Keywords AstronomyAstrophysics and CosmologyMeasurement Science and InstrumentationQuantum Field TheoriesString TheoryNuclear PhysicsHeavy IonsHadronsElementary ParticlesQuantum Field Theory
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ATLAS COLLABORATION. The ATLAS Inner Detector commissioning and calibration. In: European Physical Journal. C, 2010, vol. 70, n° 3, p. 787-821. https://archive-ouverte.unige.ch/unige:38670

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Deposited on : 2014-07-15

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