Physics – Instrumentation and Detectors
Scientific paper
2011-11-24
JINST 7:C01097,2012
Physics
Instrumentation and Detectors
prepared for the TWEPP 2011 conference proceedings
Scientific paper
The branching ratio for the decay $K^+ \to \pi^+\nu\bar{\nu}$ is sensitive to new physics; the NA62 experiment will measure it to within about 10%. To reject the dominant background from channels with final state photons, the large-angle vetoes (LAVs) must detect particles with better than 1 ns time resolution and 10% energy resolution over a very large energy range. Our custom readout board uses a time-over-threshold discriminator coupled to a TDC as a straightforward solution to satisfy these requirements. A prototype of the readout system was extensively tested together with the ANTI-A2 large angle veto module at CERN in summer 2010.
Ambrosino F.
Angelucci B.
Antonelli Alex
Corradi G.
Costantini Federica
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