https://doi.org/10.1051/epjconf/202328306012
Muon counting with the Underground Muon Detector of The Pierre Auger Observatory
1 Instituto de Tecnologías en Detección y Astropartículas, Av. Gral Paz 1499, 1650 Buenos Aires, Argentina
2 Institut für Astroteilchenphysik, Hermann-von-Helmholtz-Platz 1, 76131 Karlsruhe, Germany
* Corresponding author: marina.scornavacche@iteda.cnea.gov.ar
** Corresponding author: spokespersons@auger.org full author list available at https://www.auger.org/archive/authors_2022_10.html
Published online: 28 April 2023
The Underground Muon Detector (UMD) aims to extend the detection range of the Pierre Auger Observatory to observe cosmic rays of energies greater than 1016.6 eV and performs a direct measurement of the muon component (sensitive observable to the mass composition) of the air showers. In this work, we will present an overview of the final design of the UMD and its reconstruction techniques alongside the observations obtained during the engineering array phase. First results suggest that the current hadronic interaction models have a muon deficit at energies between 2×1017 eV and 2×1018 eV.
© The Authors, published by EDP Sciences, 2023
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
