The design and performance of the ATLAS jet trigger

20th International Conference on Computing in High Energy and Nuclear Physics

物理学;计算机科学

Shimizu, Shima^1

Kobe University, Rokkodai-cho 1-1, Nada-ku, Kobe

657-8501, Japan^1

关键词: Event selection;    Level-1 triggers;    New physics;    Operational aspects;    Region of interest;    Standard model;    Trigger level;    Trigger systems;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/513/1/012034/pdf
DOI  :  10.1088/1742-6596/513/1/012034

学科分类：计算机科学（综合）

来源: IOP

【 摘 要 】

The ATLAS jet trigger is an important element of the event selection process, providing data samples for studies of Standard Model physics and searches for new physics at the LHC. The ATLAS jet trigger system has undergone substantial modifications over the past few years of LHC operations, as experience developed with triggering in a high luminosity and high event pileup environment. In particular, the region-of-interest based strategy has been replaced by a full scan of the calorimeter data at the third trigger level, and by a full scan of the level-1 trigger input at level-2 for some specific trigger chains. Hadronic calibration and cleaning techniques are applied in order to provide improved performance and increased stability in high luminosity data taking conditions. In this note we discuss the implementation and operational aspects of the ATLAS jet trigger during 2011 and 2012 data taking periods at the LHC.