CERN Accelerating science

Article
Report number	arXiv:0906.1494
Title	The OPERA global readout and GPS distribution system
Author(s)	Marteau, J. (Lyon, IPN)
Collaboration	the OPERA collaboration
Publication	2010
Imprint	09 Jun 2009
Number of pages	2
Note	Comments: talk presented at 11th Pisa meeting on advanced detectors, may '09, submitted to the proceedings talk presented at 11th Pisa meeting on advanced detectors, may '09, submitted to the proceedings
In:	Nucl. Instrum. Methods Phys. Res., A 617 (2010) 291-293
In:	11th Pisa Meeting on Advanced Detectors on Frontier Detectors For Frontier Physics, La Biodola, Italy, 24 - 30 May 2009, pp.291-293
DOI	10.1016/j.nima.2009.10.095
Subject category	Detectors and Experimental Techniques ; Detectors and Experimental Techniques
Accelerator/Facility, Experiment	CERN SPS ; OPERA CNGS1
Abstract	OPERA is an experiment dedicated to the observation of $\nu_\mu$ into $\nu_\tau$ oscillations in appearance mode using a pure $\nu_\mu$ beam (CNGS) produced at CERN and detected at Gran Sasso. The experiment exploits a hybrid technology with emulsions and electronics detectors \cite{opera}. The OPERA readout is performed through a triggerless, continuously running, distributed and highly available system. Its global architecture is based on Ethernet-capable smart sensors with microprocessing and network interface directly at the front-end stage. An unique interface board is used for the full detector reading out ADC-, TDC- or Controller-boards. All the readout channels are synchronized through a GPS-locked common bidirectional clock distribution system developped on purpose in a PCI format. It offers a second line to address all channels and the off-line synchronization with the CNGS to select the events.
Copyright/License	arXiv nonexclusive-distrib. 1.0

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