Speaker
Description
In this contribution, we present the DAQ system of the KM3NeT neutrino telescopes, ARCA, and ORCA, already operating while under construction, at the bottom of the Mediterranean Sea.
The system has to deal with a hardware-triggerless streaming readout of the optical modules in the telescopes. The throughput ranges from 20 Gbps up to hundreds of Gbps, scaling with the size of the detectors. The modularity of the DAQ architecture allowed for data taking since the first deployed sectors of the telescopes, which are currently under expansion. We will present the network infrastructure that connects the optical modules in the deep sea with the control station on-shore. It exploits frontier technologies like the Software Defined Networking and White Rabbit fabrics for handling complex connection topologies and distribution of the sub-nanosecond synchronisation. We will review the organisation of the control station with a focus on the exploitation of the Ansible and Docker technologies used to deploy and run the DAQ software. The implemented technology eases the integration of the online alert system, serving for instance the multi-messenger astronomy program of KM3NeT.
