LHC and ATLAS upgrade, Prof. Marzio Nessi (CERN)

With the Large Hadron Collider (LHC) evolving with time towards its nominal design value and even beyond, the ATLAS detector has to be ready to exploit in optimal conditions the delivered beam luminosity. Today's plans are to run the LHC with a repetitive pattern of typically 3 years followed by major shutdowns, to allow accelerator and detectors to face the new challenges in the best conditions. Three major shutdowns are already scheduled in 2013 (LS1), 2018 (LS2) and 2022 (LS3). After 2022 the LHC will evolve into a high-luminosity machine, capable of delivering a target integrated Luminosity of about 3000 fb-1 at 14 TeV center-of-mass energy. The ATLAS plans on how to follow these evolutions and optimize the detector performance at an optimum for new physics at all stages will be discussed.