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The ATLAS Inner Detector Commissioning and Calibration
Stockholm University, Faculty of Science, Department of Physics. Stockholm University, Faculty of Science, The Oskar Klein Centre for Cosmo Particle Physics (OKC). (Elementarpartikelfysik)
Stockholm University, Faculty of Science, Department of Physics. (Systemfysik)
Stockholm University, Faculty of Science, Department of Physics. (Elementarpartikelfysik)
Stockholm University, Faculty of Science, Department of Physics. (Systemfysik)
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2010 (English)In: European Physical Journal C, ISSN 1434-6044, E-ISSN 1434-6052, Vol. 70, no 3, 787-821 p.Article in journal (Refereed) Published
Abstract [en]

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.

Place, publisher, year, edition, pages
2010. Vol. 70, no 3, 787-821 p.
National Category
Subatomic Physics
Research subject
Physics
Identifiers
URN: urn:nbn:se:su:diva-49166DOI: 10.1140/epjc/s10052-010-1366-7ISI: 000285200000013OAI: oai:DiVA.org:su-49166DiVA: diva2:376561
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Swedish Research CouncilKnut and Alice Wallenberg Foundation
Note

Publikationen har totalt 2595 författare, G. Aad et al.

Available from: 2010-12-11 Created: 2010-12-11 Last updated: 2017-12-11Bibliographically approved

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Åsman, BarbroBohm, ChristianClément, ChristopheEriksson, DanielGellerstedt, KarlHellman, StenJohansen, MarianneJohansson, ErikJon-And, KerstinMilstead, DavidMoa, TorbjörnNordkvist, BjörnOhm, ChristianSelldén, BjörnSilverstein, SamuelSjölin, JörgenTylmad, MajaYang, Zhaoyu
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Department of PhysicsThe Oskar Klein Centre for Cosmo Particle Physics (OKC)
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European Physical Journal C
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