ATLAS Detector Performance in 2011 - Calorimeters

During the 2011 data taking period, ATLAS operated with excellent efficiency, recording a preliminary integrated luminosity of 5.23 fb^{-1} in pp collisions at \sqrt{s}=7 TeV and 158 \mub^{-1} in PbPb collisions at \sqrt{s_{NN}}=2.76 TeV. The ATLAS Liquid Argon and Tile Calorimeters played a significant role achieving this performance and recording high-quality physics data. The aim of this poster is to present some of the main performance results of the past year and the effort behind them. Improvements in timing performance and the LAr pointing performance are discussed. The calibration and measurement stability of the calorimeters is also presented. Finally, hardware upgrades and replacements that will ensure efficient data taking through the 2012 data taking period are mentioned.