Münster 2017 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 15: Instrumentation III
HK 15.3: Vortrag
Dienstag, 28. März 2017, 11:45–12:00, F 3
Integration of redundancy logic in the hardware event builder of the COMPASS DAQ — •Dominik Steffen1, 4, Yunpeng Bai1, Martin Bodlak2, Vladimir Frolov3, Stefan Huber1, Vladimir Jary2, Igor Konorov1, Dmitri Levit1, Joseph Novy2, Ondrej Subrt2, 4, and Miroslav Virius2 — 1Technische Universität München (DE) — 2Czech Technical University (CZ) — 3Joint Institute for Nuclear Research (RU) — 4European Organization for Nuclear Research -CERN (CH)
This contribution will introduce the principles of the event building process in Data Acquisition systems (DAQ) of high-energy physics experiments. Since 2014, the COMPASS experiment at CERN exploits the superior properties of FPGAs to execute this task. The talk will discuss the advantages and drawbacks of the COMPASS hardware event builder in contrast to the traditional approach which relies on software running on distributed computer nodes interconnected via a common Ethernet network. Moreover, it will describe in detail the necessary changes in software and hardware in order to implement redundancy logic into the hardware event builder. Redundant hardware nodes which can be activated in case of defective other nodes and thus prevent the system from failing will eliminate one of the major drawbacks compared to traditional event builders.