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

摘要

The KM3NeT neutrino telescope will be composed of many optical modules, eachof them containing 31 (3") photomultipliers, connected to a Central LogicBoard. The Central Logic Board integrates Time to Digital Converters thatmeasure Time Over Threshold of the photomulti- pliers signals while WhiteRabbit is used for the optical modules time synchronization. Auxiliary boardshave also been designed and built in order to test and extend the performanceof the Cen- tral Logic Board. The Central Logic Board, as well as the auxiliaryboards, will be presented by focusing on the design consideration, prototypingissues and tests.