Real-time alignment and cali bration of the LHCb Detector in Run II

21st International Conference on Computing in High Energy and Nuclear Physics

物理学;计算机科学

Dujany, Giulio^1 ; Storaci, Barbara^2

University of Manchester, School of Physics and Astronomy, Oxford Road, Manchester, United Kingdom^1

Universitat Zurich, Physik-Institut, Winterthurerstrasse 190, Zurich, Switzerland^2

关键词: Computing time;    Event selection;    Multi core;    Optimal detectors;    Particle identifications;    Performance points;    Spatial alignment;    Trigger level;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/664/8/082010/pdf
DOI  :  10.1088/1742-6596/664/8/082010

学科分类：计算机科学（综合）

来源: IOP

【 摘 要 】

Stable, precise spatial alignment and PID calibration are necessary to achieve optimal detector performance. During Run2, LHCb will have a new real-time detector alignment and calibration to allow equivalent performance in the online and offline reconstruction to be reached. This offers the opportunity to optimise the event selection by applying stronger constraints, and to use hadronic particle identification at the trigger level. The computing time constraints are met through the use of a new dedicated framework using the multi-core farm infrastructure for the trigger. The motivation for a real-time alignment and calibration of the LHCb detector is discussed from the operative and physics performance point of view. Specific challenges of this configuration are discussed, as well as the designed framework and its performance.