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15th International QCD Conference (QCD 10), Montpellier : France (2010)
Status and Performance of the ATLAS Experiment
P. Iengo1
ATLAS Collaboration(s)
(2010)

ATLAS is a general purpose experiment designed to exploit the full discovery potential of LHC. It consists of an inner detector immersed in a soleinodal magnetic field, hadronic and electromagnetic calorimeters and a muon spectrometer embedded in three air-core toroids. After a commissioning period with cosmic rays, ATLAS registered the first LHC proton-proton collisions at 900 GeV and 2.36 GeV center-of-mass energy in December 2009. Since 30 March 2010 the experiment is stably taking data at the energy of 7 TeV in the center of massd. The very good state of the ATLAS detector, performance study and first results with collision data are reported.
1 :  LAPP - Laboratoire d'Annecy le Vieux de Physique des Particules
Physique/Physique des Hautes Energies - Expérience
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