AugerPrime: the Pierre Auger Observatory Upgrade

Abstract

The world largest exposure to ultra-high energy cosmic rays accumulated by the Pierre Auger Observatory led to major advances in our understanding of their properties, but the many unknowns about the nature and distribution of the sources, the primary composition and the underlying hadronic interactions prevent the emergence of a uniquely consistent picture. The new perspectives opened by the current results call for an upgrade of the Observatory, whose main aim is the collection of new information about the primary mass of the highest energy cosmic rays on a shower-by-shower basis. The evaluation of the fraction of light primaries in the region of suppression of the flux will open the window to charged particle astronomy, allowing for composition-selected anisotropy searches. In addition, the properties of multiparticle production will be studied at energies not covered by man-made accelerators and new or unexpected changes of hadronic interactions will be searched for. After a discussion of the motivations for upgrading the Pierre Auger Observatory, a description of the detector upgrade is provided. We then discuss the expected performances and the improved physics sensitivity of the upgraded detectors and present the first data collected with the already running Engineering Array.

arXiv comment9 pages, 11 figures, presented at UHECR 2018 (Paris, Oct 2018)

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• Indication of anisotropy in arrival directions of ultra-high-energy cosmic rays through comparison to the flux pattern of extragalactic gamma-ray sources
• Testing Hadronic Interactions at Ultrahigh Energies with Air Showers Measured by the Pierre Auger Observatory
• Searches for Anisotropies in the Arrival Directions of the Highest Energy Cosmic Rays Detected by the Pierre Auger Observatory
• Evidence for a mixed mass composition at the `ankle' in the cosmic-ray spectrum
• Observation of inclined EeV air showers with the radio detector of the Pierre Auger Observatory
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• Muon Counting using Silicon Photomultipliers in the AMIGA detector of the Pierre Auger Observatory

Cited by in corpus (36)

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• Probing the origin of ultra-high-energy cosmic rays with neutrinos in the EeV energy range using the Pierre Auger Observatory
• Ultra-High-Energy Cosmic Rays: The Intersection of the Cosmic and Energy Frontiers
• Cosmic-ray anisotropies in right ascension measured by the Pierre Auger Observatory
• Constraining the sources of ultra-high-energy cosmic rays across and above the ankle with the spectrum and composition data measured at the Pierre Auger Observatory
• White Paper and Roadmap for Quantum Gravity Phenomenology in the Multi-Messenger Era
• A search for photons with energies above $2\times 10^{17}$ eV using hybrid data from the low-energy extensions of the Pierre Auger Observatory
• Testing Hadronic-Model Predictions of Depth of Maximum of Air-Shower Profiles and Ground-Particle Signals using Hybrid Data of the Pierre Auger Observatory
• GCOS -- The Global Cosmic Ray Observatory
• Inference of the Mass Composition of Cosmic Rays with energies from $10^{18.5}$ to $10^{20}$ eV using the Pierre Auger Observatory and Deep Learning
• Super heavy dark matter origin of the PeV neutrino event: KM3-230213A
• Searches for Ultra-High-Energy Photons at the Pierre Auger Observatory
• Reconstructing the cosmic-ray energy from the radio signal measured in one single station
• Full-sky searches for anisotropies in UHECR arrival directions with the Pierre Auger Observatory and the Telescope Array
• Constraints on UHECR sources and extragalactic magnetic fields from directional anisotropies
• Measurement of the Depth of Maximum of Air-Shower Profiles with energies between $10^{18.5}$ and $10^{20}$ eV using the Surface Detector of the Pierre Auger Observatory and Deep Learning
• Search for magnetically-induced signatures in the arrival directions of ultra-high-energy cosmic rays measured at the Pierre Auger Observatory
• Galactic halo bubble magnetic fields and UHECR deflections
• Determination of the Cosmic-Ray Chemical Composition: Open Issues and Prospects
• UHECR Echoes from the Council of Giants
• Science with the Global Cosmic-ray Observatory (GCOS)
• The Radio Detector of the Pierre Auger Observatory -- status and expected performance
• Superheavy Supersymmetric Dark Matter for the origin of KM3NeT Ultra-High Energy signal
• Simulating radio emission from particle cascades with CORSIKA 8
• Radio wavefront of very inclined extensive air-showers: a simulation study for extended and sparse radio arrays
• Ultraheavy Ultrahigh-Energy Cosmic Rays
• Fermi acceleration under Lorentz invariance violation
• Validation of high voltage power supplies for the 1-inch photomultipliers of AugerPrime, the Pierre Auger Observatory upgrade
• Measurements and tests of hadronic interactions at ultra-high energies with the Pierre Auger Observatory
• Particle content of very inclined air showers for radio signal modeling
• Effects of galactic magnetic field on the UHECR correlation studies with starburst galaxies
• Proton-air interactions at ultra-high energies in muon-depleted air showers with different depths
• Proof of principle for template synthesis approach for the radio emission from vertical extensive air showers
• Large-scale anisotropies of ultra-high-energy cosmic rays measured at the Pierre Auger Observatory
• Ultra-high-energy hadronic physics at the Pierre Auger Observatory: muon measurements
• Beyond the Local Void: A data-driven search for the origins of the Amaterasu particle