The ATLAS Hadronic Tau Trigger Initial Run-2 Strategy and Performance

As proton-proton collisions at the LHC reach instantaneous luminosities of over 10^34cm^ -2s-1, the strategies for triggering have become more important than ever for physics analyses. In these conditions single tau lepton triggers suffer from severe rate limitations, despite the sophisticated algorithms used in the tau identification. The development of further fast algorithms and the design of topological selections are the main challenges to allow a large program of physics analysis. The tau triggers provide many opportunities to study new physics beyond the Standard Model, and to get precise measurements of the properties of the Higgs boson decaying to tau-leptons. One of the major challenges is to sustain high efficiencies in events with multiple interactions. To do this we utilised faster tracking methods, multivariate selection techniques. In Run II topological criteria can now be applied already at the first trigger level, due to the addition of the L1 topological. This makes it possible to use detailed information from sub-detectors in a single L1 module in order to apply real-time event topology cuts. We present the performance of the hadronic tau trigger using Run I data taken with the ATLAS detector for p-p collisions at a centre-of-mass energy of 8 TeV. In addition the strategy for Run II data-taking and initial performance is discussed.