Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/45886
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Title: 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
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
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Citation: Journal of Instrumentation 5: T03005 (2010)
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