Architecture of the ATLAS High Level Trigger Event Selection Software

Abstract

The ATLAS High Level Trigger (HLT) consists of two selection steps: the second level trigger and the event filter. Both will be implemented in software, running on mostly commodity hardware. Both levels have a coherent approach to event selection, so a common core software framework has been designed to maximize this coherency, while allowing sufficient flexibility to meet the different interfaces and requirements of the two different levels. The approach is extended further to allow the software to run in an off-line simulation and reconstruction environment for the purposes of development. This paper describes the architecture and high level design of the software.

Plenary talk at CHEP03, LA Jolla, California, March 2003; PSN: WEPT004

References in corpus (5)

• The Algorithm Steering and Trigger Decision mechanism of the ATLAS High Level Trigger
• A New Implementation of the Region of Interest Strategy for the ATLAS Second Level Trigger
• The Athena Data Dictionary and Description Language
• Supervision of the ATLAS High Level Trigger System
• Use of a Generic Identification Scheme Connecting Events and Detector Description in the ATLAS Experiment

Cited by in corpus (5)

• The ATLAS Simulation Infrastructure
• The StoreGate: a Data Model for the Atlas Software Architecture
• The Trigger of the ATLAS Experiment
• The Topological Processor for the future ATLAS Level-1 Trigger: from design to commissioning
• Use of a Generic Identification Scheme Connecting Events and Detector Description in the ATLAS Experiment