Heidelberg 2022 – wissenschaftliches Programm
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T: Fachverband Teilchenphysik
T 98: Experimental Methods (general) 4
T 98.5: Vortrag
Donnerstag, 24. März 2022, 17:20–17:35, T-H29
Setup for a ground parameter measurement for the radio detection at the Pierre Auger Observatory* — •Jannis Pawlowsky for the Pierre Auger collaboration — Bergische Universität Wuppertal, Gaußstraße 20, 42119 Wuppertal, Deutschland
The Pierre Auger Observatory is the largest observatory in the world measuring ultra high energy cosmic rays (UHECR). With the on-going AugerPrime upgrade, the hybrid detection of the 27 Fluorescence Telescopes and 1660 Water Cherenkov Detectors (WCD) is complemented by the Radio Detector (RD) on top of each WCD. The mounted antenna detects the radio emission of the air shower.
The reconstruction of the UHECR properties with radio signals is dependent on environmental parameters like atmospheric (weather) conditions and soil composition. The ground conditions are especially important for inclined air showers, where a non-negligible fraction of the radio signal is reflected off ground prior to being measured by the antenna. Knowledge of the ground parameters, namely permittivity, ε, and conductivity, σ, is therefore essential for a precise reconstruction.
The usage of constant reference values for ε and σ is not applicable for the extended RD grid. With an area of approximately 3000 km2 it consists of many different soil types and has distinct weather conditions. In this talk we present a campaign for a measurement of the different soil types and a permanent stable and cost efficient setup in order to detect relative changes due to varying weather conditions.
*Gefördert durch die BMBF Verbundforschung Astroteilchenphysik (Vorhaben 05A20PX1)