Title: Commissioning of the ATLAS Tile Calorimeter with Single Beam and First Collisions
Abstract: The ATLAS hadronic barrel calorimeter was tested using dedicated calibration systems, cosmic ray muons and single beam data prior to the start of collisions. Before collisions, in addition to the hardware maintenance, the verification of the electromagnetic energy scale set during test-beam and the read-out synchronization of the tile calorimeter were undertaken. The results obtained showed that the calorimeter was well calibrated and ready for the challenges of the LHC collisions.