Design and implementation of the AMIGA embedded system for data acquisition

A. ETCHEGOYEN (EN COLABORACIÓN AUGER)

JOURNAL OF INSTRUMENTATION

IOP PUBLISHING LTD

Lugar: Londres; Año: 2021 vol. 16

1748-0221

The Auger Muon Infill Ground Array (AMIGA) is part of the AugerPrime upgradeof the Pierre Auger Observatory. It consists of particle counters buried 2.3 munderground next to the water-Cherenkov stations that form the 23.5 km2large infilled array. The reduced distance between detectors in this denserarea allows the lowering of the energy threshold for primary cosmic rayreconstruction down to about 1017 eV. At the depth of 2.3 m theelectromagnetic component of cosmic ray showers is almost entirely absorbed sothat the buried scintillators provide an independent and direct measurement ofthe air showers muon content. This work describes the design and implementationof the AMIGA embedded system, which provides centralized control, dataacquisition and environment monitoring to its detectors. The presented systemwas firstly tested in the engineering array phase ended in 2017, and latelyselected as the final design to be installed in all new detectors of theproduction phase. The system was proven to be robust and reliable and hasworked in a stable manner since its first deployment.