The Central Logic Board and its auxiliary boards for the optical module of the KM3NeT detector

TL;DR

This paper describes the design, prototyping, and testing of the Central Logic Board and auxiliary boards used in the KM3NeT neutrino telescope's optical modules, highlighting their synchronization and measurement capabilities.

Contribution

It introduces the design and testing of the Central Logic Board and auxiliary boards, enhancing the performance and synchronization of optical modules in the KM3NeT detector.

Findings

Successful integration of Time to Digital Converters and White Rabbit synchronization

Prototyping validated the performance of the Central Logic Board

Auxiliary boards extend and test the main board's capabilities

Abstract

The KM3NeT neutrino telescope will be composed of many optical modules, each of them containing 31 (3") photomultipliers, connected to a Central Logic Board. The Central Logic Board integrates Time to Digital Converters that measure Time Over Threshold of the photomulti- pliers signals while White Rabbit is used for the optical modules time synchronization. Auxiliary boards have also been designed and built in order to test and extend the performance of the Cen- tral Logic Board. The Central Logic Board, as well as the auxiliary boards, will be presented by focusing on the design consideration, prototyping issues and tests.