Abstract
The main goal of the NA62 experiment at CERN is to measure the Branching Ratio (BR) of the ultra-rare decay of a charged kaon into a charged pion and two neutrinos (K + ! p + nn). The experiment aims to collect about 100 events in two years of data taking and to test the Standard Model of Particle Physics (SM), using a secondary hadron beam obtained by the SPS accelerator. The key issues for the Trigger and Data Acquisition system (TDAQ) are readout uniformity of sub-detectors, scalability, efficient online selection and lossless high-rate readout. The TDCB and the TEL62 boards are the common blocks of the fully digital TDAQ and they will be used for several sub-detectors in this high-flux rare decay experiment. TDCBs measure hit times for sub-detectors, TEL62s process and store them in a buffer, extracting only those requested by the trigger system, which merges trigger primitives also produced by TEL62s. The complete dataflow and firmware organization are described.
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