The Tile Calorimeter

The Tile Calorimeter (TileCal) is the the central section of the hadronic calorimeter of the ATLAS experiment. The TileCal is a key in detecting hadrons, jets, hadronic decays of tau leptons and to measure the missing transverse energy. Due to the very good signal to noise ratio it assists the muon spectrometer in the identification and reconstruction of muons. The performance of the calorimeter has been measured and monitored using calibration data, random triggered data, cosmic muons, splash events and LHC collision events. The results presented assess the absolute energy scale calibration precision, the energy and timing uniformity and the synchronization precision. The results demonstrate a very good understanding of the performance of the TileCal that is well within the design expectations.