Performance of the ATLAS Liquid Argon Calorimeter

ATLAS Liquid Argon Calorimeter is installed outside of the tracker to measure energies of the particles produced in the p-p collisions at the CERN Large Hadron Collider. The system consists of an Electromagnetic Calorimeter, two Hadronic End-Caps and two Forward Calorimeters. Its installation was completed at the beginning of 2008. Robust studies of the performance of the Liquid Argon Calorimeter have been made using cosmic ray data, single beam data and collision data both at 900GeV and 7TeV. These studies include electronic performance, timing alignment, energy response, etc. This poster is presenting the studies of the performance leading to a conclusion that Liquid Argon Calorimeter is working very well.