The CMS Data Acquisition System for the Phase-2 Upgrade
Abstract
During the third long shutdown of the CERN Large Hadron Collider, the CMS Detector will undergo a major upgrade to prepare for Phase-2 of the CMS physics program, starting around 2026. The upgraded CMS detector will be read out at an unprecedented data rate of up to 50 Tb/s with an event rate of 750 kHz, selected by the level-1 hardware trigger, and an average event size of 7.4 MB. Complete events will be analyzed by the High-Level Trigger (HLT) using software algorithms running on standard processing nodes, potentially augmented with hardware accelerators. Selected events will be stored permanently at a rate of up to 7.5 kHz for offline processing and analysis. This paper presents the baseline design of the DAQ and HLT systems for Phase-2, taking into account the projected evolution of high speed network fabrics for event building and distribution, and the anticipated performance of general purpose CPU. In addition, some opportunities offered by reading out and processing parts of the detector data at the full LHC bunch crossing rate (40 MHz) are discussed.
Keywords
Cite
@article{arxiv.1806.08975,
title = {The CMS Data Acquisition System for the Phase-2 Upgrade},
author = {Jean-Marc André and Ulf Behrens and Andrea Bocci and James Branson and Sergio Cittolin and Diego Da Silva Gomes and Georgiana-Lavinia Darlea and Christian Deldicque and Zeynep Demiragli and Marc Dobson and Nicolas Doualot and Samim Erhan and Jonathan Richard Fulcher and Dominique Gigi and Maciej Gladki and Frank Glege and Guillelmo Gomez-Ceballos and Magnus Hansen and Jeroen Hegeman and André Holzner and Michael Lettrich and Audrius Mecionis and Frans Meijers and Emilio Meschi and Remigius K. Mommsen and Srecko Morovic and Vivian O'Dell and Samuel Johan Orn and Luciano Orsini and Ioannis Papakrivopoulos and Christoph Paus and Andrea Petrucci and Marco Pieri and Dinyar Rabady and Attila Rácz and Valdas Rapsevicius and Thomas Reis and Hannes Sakulin and Christoph Schwick and Dainius Šimelevičius and Mantas Stankevicius and Jan Troska and Cristina Vazquez Velez and Christian Wernet and Petr Zejdl},
journal= {arXiv preprint arXiv:1806.08975},
year = {2018}
}