Commissioning of the CMS high-level trigger with cosmic rays

Mondal, N. K. ; et., al (2010) Commissioning of the CMS high-level trigger with cosmic rays Journal of Instrumentation, 5 (3). T03005_1-T03005-32. ISSN 1748-0221

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Official URL: http://iopscience.iop.org/1748-0221/5/03/T03005

Related URL: http://dx.doi.org/10.1088/1748-0221/5/03/T03005

Abstract

The CMS High-Level Trigger (HLT) is responsible for ensuring that data samples with potentially interesting events are recorded with high efficiency and good quality. This paper gives an overview of the HLT and focuses on its commissioning using cosmic rays. The selection of triggers that were deployed is presented and the online grouping of triggered events into streams and primary datasets is discussed. Tools for online and offline data quality monitoring for the HLT are described, and the operational performance of the muon HLT algorithms is reviewed. The average time taken for the HLT selection and its dependence on detector and operating conditions are presented. The HLT performed reliably and helped provide a large dataset. This dataset has proven to be invaluable for understanding the performance of the trigger and the CMS experiment as a whole.

Item Type:Article
Source:Copyright of this article belongs to Institute of Physics.
Keywords:Online Farms and Online Filtering; Trigger Concepts and Systems (Hardware and Software)
ID Code:90109
Deposited On:04 May 2012 13:48
Last Modified:04 May 2012 13:48

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