Pulse Brain · Growing Health Evidence Index
Peer-reviewed

The CMS Event-Builder System for LHC Run 3 (2021-23)

Jean-Marc André, U. Behrens, J. G. Branson, Philipp Brummer, Sergio Cittolin, Diego da Silva Gomes, Georgiana-Lavinia Darlea, Christian Deldicque, Z. Demiragli, Marc Dobson, Nicolas Doualot, S. Erhan, J. Fulcher, D. Gigi, Maciej Gładki, F. Glege, G. Gomez Ceballos, J. Hegeman, André Holzner, Michael Lettrich, Audrius Mečionis, F. Meijers, E. Meschi, R. K. Mommsen, Srećko Morović, Vivian O’Dell, L. Orsini, I. Papakrivopoulos, Christoph Paus, Andrea Petrucci, M. Pieri, Dinyar Rabad, A. Rácz, V. Rapševičius, T. Reis, Hannes Sakulin, Christoph Schwick, Dainius Šimelevičius, Mantas Stankevičius, Cristina Vazquez Velez, Christian Wernet, P. Zejdl

EPJ Web of Conferences · 2019

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Summary

The data acquisition system (DAQ) of the CMS experiment at the CERN Large Hadron Collider (LHC) assembles events of 2MB at a rate of 100 kHz. The event builder collects event fragments from about 750 sources and assembles them into complete events which are then handed to the High-Level Trigger (HLT) processes running on O (1000) computers. The aging eventbuilding hardware will be replaced during the long shutdown 2 of the LHC taking place in 2019/20. The future data networks will be based on 100 Gb/s interconnects using Ethernet and Infiniband technologies. More powerful computers may allow to combine the currently separate functionality of the readout and builder units into a single I/O processor handling simultaneously 100 Gb/s of input and output traffic. It might be beneficial to prep

Source type
Peer-reviewed study
DOI
10.1051/epjconf/201921401006
Catalogue ID
BFmoakviqe-fj008b
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