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Open Access item Commissioning of the CMS High-Level Trigger with cosmic rays

Authors:Cabrillo, I. J.
Calderón, A.
Chuang, S. H.
Diaz Merino, I.
Diez González, C.
Duarte Campderros, J.
Fernández, M.
Gómez, G.
González Sánchez, J.
González Suárez, R.
Jorda, C.
Lobelle Pardo, P.
López Virto, A.
Marco, Jesús
Marco, Rafael
Martínez-Rivero, Celso
Martínez Ruiz del Arbol, P.
Matorras, Francisco
Rodrigo, Teresa
Ruiz Jimeno, Alberto
Scodellaro, Luca
Sobron Sañudo, M.
Vila, Iván
Vilar, Rocío
Keywords:Online farms and online filtering, Trigger concepts and systems (hardware and software)
Issue Date:Mar-2010
Publisher:Institute of Physics Publishing
Citation:Journal of Instrumentation 5: T03005 (2010)
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.
Description:33 páginas, 3 figuras, 1 tabla.-- Open Access.-- CMS Collaboration: et al.
Publisher version (URL):http://dx.doi.org/10.1088/1748-0221/5/03/T03005
URI:http://hdl.handle.net/10261/45886
E-ISSNmetadata.dc.identifier.doi = DOI:1748-0221
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Appears in Collections:(IFCA) Artículos

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