NDLI: The Terabit/s Super-Fragment Builder and Trigger Throttling System for the Compact Muon Solenoid Experiment at CERN

Content Provider	IEEE Xplore Digital Library
Author	Bauer, G. Boyer, V. Branson, J. Brett, A. Cano, E. Carboni, A. Ciganek, M. Cittolin, S. Erhan, S. Gigi, D. Glege, F. Gomez-Reino, R. Gulmini, M. Mlot, E.G. Gutleber, J. Jacobs, C. Kim, J.C. Klute, M. Lipeles, E. Perez, J.A.L. Maron, G. Meijers, F. Meschi, E. Moser, R. Murray, S. Oh, A. Orsini, L. Paus, C. Petrucci, A. Pieri, M. Poller, L. Racz, A. Sakulin, H. Sani, M. Schieferdecker, P. Schwick, C. Sumorok, K. Suzuki, I. Tsirigkas, D. Varela, J.
Copyright Year	2007
Description	Author affiliation: Massachusetts Inst. of Technol., Cambridge (Bauer, G.)
Abstract	The data acquisition system of the Compact Muon Solenoid experiment at the large hadron collider reads out event fragments of an average size of 2 kilobytes from around 650 detector front-ends at a rate of up to 100 kHz. The first stage of event-building is performed by the Super-Fragment Builder employing custom-built electronics and a Myrinet optical network. It reduces the number of fragments by one order of magnitude, thereby greatly decreasing the requirements for the subsequent event-assembly stage. By providing fast feedback from any of the front-ends to the trigger, the trigger throttling system prevents buffer overflows in the front-end electronics due to variations in the size and rate of events or due to backpressure from the down-stream event-building and processing. This paper reports on the recent successful integration of a scaled-down setup of the described system with the trigger and with front-ends of all major sub-detectors and discusses the ongoing commissioning of the full-scale system.
Starting Page	1
Ending Page	6
File Size	3982832
Page Count	6
File Format	PDF
ISBN	9781424408665
DOI	10.1109/RTC.2007.4382746
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-04-29
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Mesons Solenoids Data acquisition Collision mitigation Large Hadron Collider USA Councils Buildings Detectors Buffer overflow Feedback Feedback Systems Data Acquisition Triggering
Content Type	Text
Resource Type	Article

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