Aachen 2019 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 61: Kosmische Strahlung III

T 61.5: Vortrag

Mittwoch, 27. März 2019, 17:10–17:25, S13

A new end-to-end calibration of the Fluorescence Detector of the Pierre Auger Observatory — Jan Berens¹, Kai Daumiller², Joachim Debatin², Hermann-Josef Mathes², •Eric Mayotte¹, Alexander Menshikov², and Julian Rautenberg¹ — ¹Bergische Universität Wuppertal, Gaußstraße 20, 42119 Wuppertal* — ²Karlsruher Institut für Technologie, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen

The Fluorescence Telescopes are crucial to the science goals of the Pierre Auger Observatory. Currently, to ensure the accuracy of their measurements, a relative calibration of each telescope is performed nightly. To improve upon this established calibration, as well as to improve the time-dependent end-to-end calibration of each telescope’s optics and camera, a new absolute calibration process has been developed. The core of the technique consists of scanning a calibrated UV Lambertian light source across the aperture of each telescope and reading out the response of the PMT camera. The camera response is then compared to the simulated end-to-end optical performance of the instrumentation given the known source properties in order to provide an absolute calibration of each telescope. This talk will give a brief overview of the method and its status as well as progress on the absolute calibration of the light source. Preliminary results including fluorescence telescope response and light source characteristics will also be presented. *Gefördert durch die BMBF Verbundforschung Astroteilchenphysik(Vorhaben 05A17PX1/05A17VK1).