The OPERA global readout and GPS distribution system

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.

talk presented at 11th Pisa meeting on advanced detectors, may '09, submitted to the proceedings

References in corpus (1)

• The detection of neutrino interactions in the emulsion/lead target of the OPERA experiment

Cited by in corpus (6)

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• Implementation of sub-nanoseconds TDC in FPGA: applications to time-of-flight analysis in muon radiography
• The OPERA experiment: a direct search of the ${\nu }_{\mu }⟶{\nu }_{\tau }$ oscillations