ATLAS Detector Performance in 2012 : Calorimeters

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ATLAS LHCC Poster

ATLAS Detector Performance in 2012 : CalorimetersNikolina Ilic and Ki Lie, for the ATLAS Collaboration12

Detector Status in 2012-2013 DataStability of the Calibration Systems

Tile operated with good data quality efficiency of 99.6% in 2012 data taking. At the end of 2013 run, 2.9% of the cells were flagged as bad in Tile. The improvement of detector stability with respect to 2011 data-taking was largely attributed to the installation of the new LVPS in 45 of the 256 phi-wedges during the end of 2011 maintenance. The observed drifts in Cesium decay is attributed mostly to a variation of the photomultiplier response and not to the scintillator degradation from irradiation, except for the gap & crack cells.Down-drift is observed when beam is on, up-drift when beam is off and during heavy ion run. Cells re-calibration is done periodically to keep electromagnetic scale to a level of