Performance of the ATLAS Tau Trigger in High Luminosity Scenarios

The sensitivity to new physics at the LHC is very much enhanced when hadronically decaying taus are present in the event topology, as for example in the Standard Model Higgs, SUSY and exotic heavy resonances. A key element in the selection of these events is the tau trigger, which has been set to achieve a rejection of 105 against low-energy jets while keeping high efficiency on signal events. In this contribution we will detail how the tau trigger performance has evolved with increasing luminosity and pileup conditions during the 2011 data taking period. We will summarize the strategy for trigger efficiency determinations with data driven methods. Also, we will present a summary of the trigger configuration run online during 2011 data taking, and how it maps the SM measurements or new physics searches planned for 2011 with hadronic tau decays in the final state.