Andrea Biagioni (INFN)
The KM3Net-Italia underwater neutrino detection unit, the tower, consists of 14 floors. Each floor supports 6 Optical Modules containing front-end electronics needed to digitize the PMT signal, format and transmit the data and 2 hydrophones used to reconstruct in real-time the position of Optical Modules, for a maximum tower throughput of more than 600 MB/s. All floor data are collected by the Floor Control Module (FCM) board and transmitted by optical bidirectional virtual point-to-point connection to the on-shore laboratory. Each FCM needs an on-shore communication endpoint counterpart. In this contribution we present NaNet3, an on-shore readout board based on Altera Stratix V GX FPGA able to manage multiple FCM data channels with a capability of 800 Mbps each. The design represents a NaNet customization for the KM3NeT-Italia experiment, adding support in its I/O interface for a synchronous link protocol with deterministic latency at physical level and for a Time Division Multiplexing protocol at data level.
Alessandro Lonardo (INFN) Andrea Biagioni (INFN) Carlo Alessandro Nicolau (INFN - National Institute for Nuclear Physics) Davide Rossetti (INFN and Nvidia) Elena Pastorelli (INFN) Fabrizio Ameli (INFN) Francesca Lo Cicero (INFN) Francesco Simeone (INFN) Francesco Simula (INFN) Gianluca Lamanna (Istituto Nazionale Fisica Nucleare Frascati (IT)) Laura Tosoratto (INFN) Luca Pontisso (Universita di Pisa & INFN (IT)) Michele Martinelli (INFN) Ottorino Frezza (INFN) Pier Stanislao Paolucci (INFN) Piero Vicini (INFN) Roberto Ammendola (INFN)