Trigger and Data Acquisition
One of the central challenges of the ATLAS experiment is to run through the 40 million bunch crossings per second and identify and record the events of interest at a managable rate of a few kHz that can then be used for full reconstruction and analysis. To achieve this is the main responsibily of the Trigger and Data Acquisition (TDAQ) system. The SLAC team is closely involved in the TDAQ system, in the areas of the High-Level Trigger and DAQ software, including the online monitoring and online database infrastructure, the online luminosity and online beam spot measurements. We have recently joined efforts in the online software and configuration of the Fast Tracker (FTK) hardware that is being commissioned during Run 2.