TY - GEN
T1 - Calibration and Performance of the Surface Scintillator Detector of the Pierre Auger Observatory
AU - The Pierre Auger Collaboration
AU - Abdul Halim, A.
AU - Abreu, P.
AU - Aglietta, M.
AU - Allekotte, I.
AU - Cheminant, K. Almeida
AU - Almela, A.
AU - Aloisio, R.
AU - Scholten, Olaf
PY - 2025/12/30
Y1 - 2025/12/30
N2 - The Pierre Auger Observatory has led to significant advances in our understanding of ultra- high-energy cosmic rays. These new insights have driven a major upgrade of the Observatory, known as AugerPrime, through which the experiment has entered its Phase II, a new period of data collection. A key part of the upgrade is adding surface scintillator detectors (SSD) on top of the existing water-Cherenkov detectors (WCD). The main goal is to leverage their different responses to the electromagnetic and muonic shower components, enhancing the reconstruction of the primary cosmic-ray mass. In this contribution, we present the methods that involve analyzing peak and charge distributions of atmospheric muons for accurate calibration during extensive air-shower event reconstruction, along with the development of a rate-based algorithm for independent calibration. We also show the performance of the SSDs with Phase-II data, including PMT reliability and stability of key parameters, such as gain and signal-to-noise ratio.
AB - The Pierre Auger Observatory has led to significant advances in our understanding of ultra- high-energy cosmic rays. These new insights have driven a major upgrade of the Observatory, known as AugerPrime, through which the experiment has entered its Phase II, a new period of data collection. A key part of the upgrade is adding surface scintillator detectors (SSD) on top of the existing water-Cherenkov detectors (WCD). The main goal is to leverage their different responses to the electromagnetic and muonic shower components, enhancing the reconstruction of the primary cosmic-ray mass. In this contribution, we present the methods that involve analyzing peak and charge distributions of atmospheric muons for accurate calibration during extensive air-shower event reconstruction, along with the development of a rate-based algorithm for independent calibration. We also show the performance of the SSDs with Phase-II data, including PMT reliability and stability of key parameters, such as gain and signal-to-noise ratio.
U2 - 10.22323/1.501.0227
DO - 10.22323/1.501.0227
M3 - Conference contribution
T3 - PoS Proceedings of Science
BT - 39th International Cosmic Ray Conference (ICRC2025) - Cosmic-Ray Indirect
PB - Sissa Medialab Srl
T2 - 39th International Cosmic Ray Conference, ICRC 2025
Y2 - 15 July 2025 through 24 July 2025
ER -