Scientific article

The ATLAS Inner Detector commissioning and calibration

ContributorsATLAS Collaboration
Published inEuropean physical journal. C, Particles and fields, vol. 70, no. 3, p. 787-821
Publication date2010

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.

  • Astronomy
  • Astrophysics and Cosmology
  • Measurement Science and Instrumentation
  • Quantum Field Theories
  • String Theory
  • Nuclear Physics
  • Heavy Ions
  • Hadrons
  • Elementary Particles
  • Quantum Field Theory
Citation (ISO format)
ATLAS Collaboration. The ATLAS Inner Detector commissioning and calibration. In: European physical journal. C, Particles and fields, 2010, vol. 70, n° 3, p. 787–821. doi: 10.1140/epjc/s10052-010-1366-7
Main files (1)
Article (Published version)
ISSN of the journal1434-6044

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