Electron and photon reconstruction and identification with the ATLAS detector and performance with π0 → γγ and η → γγ with √s = 900GeV data

In this article the electron and photon reconstruction and identification with the ATLAS detector will be illustrated, both on MC simulation and on the data collected in the year 2009 at √s = 900GeV. The performance with π0 → γγ and η → γγ on the same data will also be discussed.