The fragmentation trigger of the FOOT experiment

FOOT is a fixed target nuclear physics experiment in which O, C and He beams are shot on H enriched targets to study the projectile fragmentations; the measured cross sections will be used in medical physics and radioprotection in space applications. Beam fragmentation happens only on ≈ 10% of the cases so it is convenient to develop a sophisticated trigger procedure to veto most of non-fragmented primaries passing through the detector.