The ATLAS Inner Detector commissioning and calibration

The ATLAS Collaboration

Research output: Contribution to journalArticle

66 Citations (Scopus)

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 σp/p=(4. 83±0. 16)×10-4 GeV-1×pT have been measured for high momentum tracks.

Original languageEnglish
Pages (from-to)787-821
Number of pages35
JournalEuropean Physical Journal C
Volume70
Issue number3
DOIs
Publication statusPublished - Dec 2010
Externally publishedYes

Fingerprint

Calibration
Detectors
Cosmic rays
detectors
cosmic rays
Momentum
actuators
alignment
momentum
Silicon
Straw
silicon
Angle measurement
pattern recognition
Pattern recognition
installing
strip
Energy dissipation
rays
hardware

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)
  • Engineering (miscellaneous)

Cite this

The ATLAS Inner Detector commissioning and calibration. / The ATLAS Collaboration.

In: European Physical Journal C, Vol. 70, No. 3, 12.2010, p. 787-821.

Research output: Contribution to journalArticle

The ATLAS Collaboration. / The ATLAS Inner Detector commissioning and calibration. In: European Physical Journal C. 2010 ; Vol. 70, No. 3. pp. 787-821.
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