INVESTIGADORES
OTERO Y GARZON Gustavo Javier
artículos
Título:
The ATLAS Inner Detector commissioning and calibration
Autor/es:
G. OTERO Y GARZON, R. PIEGAIA, ET. AL., THE ATLAS COLLABORATION
Revista:
EUROPEAN PHYSICAL JOURNAL C - PARTICLES AND FIELDS
Editorial:
SPRINGER
Referencias:
Año: 2010 p. 787 - 821
ISSN:
1434-6044
Resumen:
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 {\mu}m and a relative momentum resolution {\sigma}p/p =
(4.83+/-0.16) \times 10-4 GeV-1 \times pT have been measured for high
momentum tracks.