Upgrades to the ATLAS Level-1 Calorimeter Trigger

作者：Plucinski P^*

来源：Journal of Instrumentation, 2014, 9(01): C01023.

DOI：10.1088/1748-0221/9/01/C01023

• Trigger concepts and systems (hardware and software)
• Trigger algorithms

In 2015 the Large Hadron Collider will run with increased center-of-mass energy and luminosity. To maintain a high efficiency in selecting interesting collisions for the physics analyses in the next data-taking period, event topology information will be added to the ATLAS Level-1 real time data path and processed by a new Topology Processor (L1Topo). To cope with the luminosity levels foreseen after the 2018 LHC upgrade, a new digital trigger path for the Liquid Argon calorimeters will provide finer granularity and depth segmentation in the electromagnetic layer to new Level-1 feature extractors (FEX) for an improved electron, photon, tau and jet selection. We present the ongoing and future calorimeter trigger upgrades to the ATLAS Level-1 trigger.

• 出版日期2014-1