Discussion on the electromagnetic calorimeters of ATLAS and CMS

This document summarizes a discussion on the electromagnetic calorimeters of ATLAS and CMS, two experiments at the CERN Large Hadron Collider (LHC), that took place at the 13th Vienna Conference on Instrumentation in February 2013. During the discussion each electromagnetic calorimeter and its performance was described in response to ten questions chosen to cover a wide range from the design and construction of the calorimeters over the calibration and performance to their role in the discovery of the Higgs boson and upgrade plans.