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arxiv 2101.06158 v2 pith:YV6FN3BR submitted 2021-01-15 astro-ph.IM

The accuracy of signal measurement with the water-Cherenkov detectors of the Pierre Auger Observatory

classification astro-ph.IM
keywords detectorsignalaccuracyangleaugercosmicincreasingmeasurement
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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The Auger Surface Detector consists of a large array of water Cherenkov detector tanks each with a volume of 12,000 liters, for the detection of high energy cosmic rays. The accuracy in the measurement of the integrated signal amplitude of the detector unit has been studied using experimental air shower data. It can be described as a Poisson-like term with a normalization constant that depends on the zenith angle of the primary cosmic ray. This dependence reflects the increasing contribution to the signal of the muonic component of the shower, both due to the increasing muon/electromagnetic (e+- and gamma) ratio and muon track length with zenith angle.

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