Triggering On Hadronic Tau Decays: A challenge met by ATLAS

The ATLAS experiment at the Large Hadron Collider (LHC) has taken plenty of data in 2011. For many physics analysis both in the Standard Model (SM) and Beyond the Standard Model (BSM) such as Higgs boson searches, tau leptons play an important role. Thus, triggering on hadronic tau decays is an essential incredient for the success of those measurements. This contribution will summarize the efforts to meet this challenge. Efficiency measurements using data taken in 2011 at a center-of-mass energy of 7 TeV are described and results are presented. An outlook on further developments of the tau trigger algorithms to match the requirements in the future at higher instantanous luminosities are summarised in the end.