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T: Fachverband Teilchenphysik
T 53: Kosmische Strahlung III
T 53.7: Talk
Wednesday, March 21, 2018, 18:05–18:20, Philo-HS6
Development of a universal time model for AMIGA at the Pierre Auger Observatory — •Johannes Hulsman for the Pierre Auger collaboration — Karlsruhe Institute of Technology, Karlsruhe, Germany — Instituto de Tecnologías en Detección y Astropartículas (ITeDA), Buenos Aires, Argentina
Shower Universality aims to describe the atmospheric shower development of cosmic rays by accounting for the physical properties of the secondary particles. It relies on the universal behavior of the EM and muonic longitudinal profiles. To successfully map the EAS 1-to-1, it is pertinent to properly parameterize the detector signal as a function of position and shower stage. At the Pierre Auger Collaboration, such a universal model has been developed for the timing of the surface detectors for energies between 1018.5eV and 1020eV. Each shower is described with a set of global parameters (Xmax, energy, geometry and normalized muonic component) and predicts the expected signal with 10% accuracy. Combining these results with the 100% duty cycle of the surface detectors allows for mass composition and anisotropy studies with great event statistics.
The AMIGA underground muon detector is an upgrade of the Pierre Auger Observatory and aims to directly measure the muons from air showers and extend the energy range towards 1017eV. In addition to extending the time model of the surface detectors for lower energies, a dedicated time model is being developed and will account for the muonic production depth Xmaxµ. Combining both will provide more insight into the air shower. Initial results will be shown.