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Bonn 2020 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 84: Methods of astroparticle physics V

T 84.1: Vortrag

Donnerstag, 2. April 2020, 16:30–16:45, L-3.001

A new end-to-end calibration of the Fluorescence Detector of the Pierre Auger Observatory — •Christoph Schäfer for the Pierre Auger collaboration — Institute for Nuclear Physics, Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany

One of the crucial parts of the Pierre-Auger-Observatory are fluorescence telescopes. In the past, the absolute calibration of these fluorescence telescopes was performed with a large-diameter light-source, which illuminated the whole aperture of the telescope at once, roughly once every three years, while a relative calibration was performed every night. In this contribution a new technique of an absolute end-to-end calibration of the fluorescence telescopes is presented. This new technique employs a calibrated portable Lambertian light-source which is scanned across the aperture of each telescope. The readout of the PMT camera at each position of the light source in front of the aperture provides an absolute calibration of the telescope. This talk will give a brief overview of the method and its status as well as preliminary results from the fluorescence telescope measurements.

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