Track Trigger at the High Luminosity LHC

During the High Luminosity LHC, both ATLAS and CMS detectors will need extremely fast charged-particle tracking at the trigger level to maintain manageable trigger rates and achieve their physics goals. An overview of the upgrades planned for the the tracker sub-detectors and trigger systems is given, along with a description of the algorithms under study. Preliminary results from smaller scale demonstrator tests are also shown.