The data-acquisition system of the CMS experiment at the LHC

The data-acquisition system of the CMS experiment at the LHC performs the read-out and assembly of events accepted by the first level hardware trigger. Assembled events are made available to the high-level trigger which selects interesting events for offline storage and analysis. The system is desig...

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Veröffentlicht in:	Journal of physics. Conference series 2011-12, Vol.331 (2), p.022021-6
Hauptverfasser:	Bauer, G, Beccati, B, Behrens, U, Biery, K, Bouffet, O, Branson, J, Bukowiec, S, Cano, E, Cheung, H, Ciganek, M, Cittolin, S, Coarasa, J A, Deldicque, C, Dupont, A, Erhan, S, Gigi, D, Glege, F, Gomez-Reino, R, Hatton, D, Holzner, A, Hwong, Y L, Masetti, L, Meijers, F, Meschi, E, Mommsen, R K, Moser, R, O'Dell, V, Orsini, L, Paus, C, Petrucci, A, Pieri, M, Racz, A, Raginel, O, Sakulin, H, Sani, M, Schieferdecker, P, Schwick, C, Shpakov, D, Simon, M, Sumorok, K
Format:	Artikel
Sprache:	eng
Schlagworte:	Architecture (computers) Assembly Computer programs Design engineering Hardware Large Hadron Collider Physics Software Solenoids
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Beschreibung
Zusammenfassung:	The data-acquisition system of the CMS experiment at the LHC performs the read-out and assembly of events accepted by the first level hardware trigger. Assembled events are made available to the high-level trigger which selects interesting events for offline storage and analysis. The system is designed to handle a maximum input rate of 100 kHz and an aggregated throughput of 100GB/s originating from approximately 500 sources. An overview of the architecture and design of the hardware and software of the DAQ system is given. We discuss the performance and operational experience from the first months of LHC physics data taking.
ISSN:	1742-6596 1742-6588 1742-6596
DOI:	10.1088/1742-6596/331/2/022021