Status and Future Evolution of the ATLAS Offline Software. Issue 7 (December 2015)

• Record Type: Journal Article
• Authors: Seuster, R; Elsing, M; Stewart, G A; Tsulaia, V
• Is Part Of: Journal of physics. Volume 664:Issue 7(2015)
• Publication Date: 2015-12
• Subjects: Physics -- Congresses; 530.5
• DOI: 10.1088/1742-6596/664/7/072044
• Languages: English
• ISSNs: 1742-6588

Abstract

Abstract: These proceedings give a summary of the many software upgrade projects undertaken to prepare ATLAS for the challenges of Run-2 of the LHC. Those projects include a significant reduction of the CPU time required for reconstruction of real data with high average pile-up event rates compared to 2012. This is required to meet the challenges of the expected increase in pileup and the higher data taking rate of up to 1 kHz. By far the most ambitious project is the implementation of a completely new analysis model, based on a new ROOT readable reconstruction format, xAOD. The new model also includes a reduction framework based on a train model to centrally produce skimmed data samples and an analysis framework. These proceedings close with a brief overview of future software projects and plans that will lead up to the coming Long Shutdown 2 as the next major ATLAS software upgrade phase.