Design, upgrade and characterization of the silicon photomultiplier front-end for the AMIGA detector at the Pierre Auger Observatory

Pierre Auger Collaboration

Research output: Contribution to journalArticlepeer-review

Abstract

AMIGA (Auger Muons and Infill for the Ground Array) is an upgrade of the Pierre Auger Observatory to complement the study of ultra-high-energy cosmic rays (UHECR) by measuring the muon content of extensive air showers (EAS). It consists of an array of 61 water Cherenkov detectors on a denser spacing in combination with underground scintillation detectors used for muon density measurement. Each detector is composed of three scintillation modules, with 10 m2 detection area per module, buried at 2.3 m depth, resulting in a total detection area of 30 m2. Silicon photomultiplier sensors (SiPM) measure the amount of scintillation light generated by charged particles traversing the modules. In this paper, the design of the front-end electronics to process the signals of those SiPMs and test results from the laboratory and from the Pierre Auger Observatory are described. Compared to our previous prototype, the new electronics shows a higher performance, higher efficiency and lower power consumption, and it has a new acquisition system with increased dynamic range that allows measurements closer to the shower core. The new acquisition system is based on the measurement of the total charge signal that the muonic component of the cosmic ray shower generates in the detector.

Original languageEnglish
Article numberP01026
JournalJournal of Instrumentation
Volume16
Issue number1
DOIs
StatePublished - Jan 2021

Keywords

  • APDs
  • Calibration and fitting methods; Performance of High Energy Physics Detectors; Photon detectors for UV
  • CCDs
  • Cluster finding
  • CMOS imagers
  • EBCCDs
  • EMCCDs
  • Etc)
  • Front-end electronics for detector readout; Pattern recognition
  • G-APDs
  • Si-PMTs
  • Visible and IR photons (solid-state) (PIN diodes

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