L1 calorimeter trigger upgrade: electron and photon performance

After the first long shutdown the LHC will restart in 2015, and instantaneous luminosity greater than $10^{34}$ cm$^{-2}$ s$^{-1}$ and an average number of pile-up events of 45 or higher could be achieved. To avoid a significant increase in energy thresholds, which would be detrimental for physics, an upgrade of the L1 trigger system is required for Run 2. The expected performance of future algorithms for the reconstruction and identification of electrons and photons are shown here.