CERN Accelerating science

Published Articles
Title	Trigger and RF Distribution Using White Rabbit
Author(s)	Włostowski, Tomasz (CERN) ; Daniluk, Grzegorz (CERN) ; Lipinski, Maciej (CERN) ; Serrano, Javier (CERN) ; Vaga, Federico (Pavia U.)
Publication	2015
Number of pages	5
In:	15th International Conference on Accelerator and Large Experimental Physics Control Systems, Melbourne, Australia, 17 - 23 Oct 2015, pp.WEC3O01
DOI	10.18429/JACoW-ICALEPCS2015-WEC3O01
Subject category	Accelerators and Storage Rings ; Detectors and Experimental Techniques
Abstract	White Rabbit is an extension of Ethernet which allows remote synchronization of nodes with jitters of around 10ps. The technology can be used for a variety of purposes. This paper presents a fixed-latency trigger distribution system for the study of instabilities in the LHC. Fixed latency is achieved by precisely time-stamping incoming triggers, notifying other nodes via an Ethernet broadcast containing these time stamps and having these nodes produce pulses at well-defined time offsets. The same system is used to distribute the 89us LHC revolution tick. This paper also describes current efforts for distributing multiple RF signals over a WR network, using a Distributed DDS paradigm.
Copyright/License	CC-BY-3.0

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