The scintillator surface detector of the Pierre Auger observatory
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Data collected so far by the Pierre Auger Observatory have enabled major advances in ultrahigh energy cosmic ray physics and demonstrated that improved determination of masses of primary cosmic-ray particles, preferably on an event-by-event basis, is necessary for understanding their origin and nature. Improvement in primary mass measurements was the main motivation for the upgrade of the Pierre Auger Observatory, called AugerPrime. As part of this upgrade, scintillator detectors are added to the existing water-Cherenkov surface detector stations. By making use of the differences in detector response to the electromagnetic particles and muons between scintillator and water-Cherenkov detectors, the electromagnetic and muonic components of cosmic-ray air showers can be disentangled. Since the muonic component is sensitive to the primary mass, such combination of detectors provides a powerful way to improve primary mass composition measurements over the original Auger surface detector design. In this paper, the so-called Scintillator Surface Detectors are discussed, including their design characteristics, production process, testing procedure and deployment in the field. © 2025 The Author(s).
Palabras clave
Detector design and construction technologies and materials, Hybrid detectors, Large detector systems for particle and astroparticle physics, Scintillators and scintillating fibres and light guides, Augers, Cerenkov counters, Charged particles, Cosmic ray detectors, Cosmic ray measurement, Cosmic rays, Cosmology, Fiber optic sensors, Hybrid materials, Ionization, Particle spectrometers, Astroparticle physics, Construction technologies, Design and construction, Design technologies, Detector design, Detector design and construction technology and material, Detector systems, Hybrid detectors, Large detector system for particle and astroparticle physic, Large detectors, Lightguides, Scintillating fiber, Scintillating lights, Scintillator and scintillating fiber and light guide, Scintillation counters