Dortmund 2021 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 13: Cosmic Rays I

T 13.5: Vortrag

Montag, 15. März 2021, 17:05–17:20, Tm

Propagation of core uncertainties in subordinate surface detector reconstructions at the Pierre Auger Observatory — •Tobias Schulz, David Schmidt, Quentin Luce, Darko Veberič, and Markus Roth for the Pierre Auger collaboration — Karlsruhe Institute of Technology, Institute for Astroparticle Physics, Karlsruhe, Germany

A better understanding of ultra-high-energy cosmic rays is one of the goals of the AugerPrime upgrade at the Pierre Auger Observatory. Together with the existing Water Cherenkov Detectors, Surface Scintillation Detectors are currently being deployed to measure air showers induced by cosmic rays. The measured signals of these detectors are samples of the shower footprint at ground and are also dependent on the distance to the shower axis.

The shower geometry reconstructed from measurements of the Water Cherenkov Detectors of the surface detector array is commonly used in subsequent steps of event reconstruction, especially those pertaining to subordinate detectors, such as the scintillator detectors. An uncertainty on the reconstructed position of the shower core translates into uncertainties in the position of each station relative to the true location of the core. The uncertainties of the core position may therefore influence the results of shower reconstructions of other detector measurements and thus should be propagated into the subsequent reconstruction procedures. Here, we present a method of propagating core uncertainties and the resulting impact on the reconstruction of the shower size with the Surface Scintillation Detector.