Measuring the accuracy of the AMIGA muon counters at the Pierre Auger Observatory

THE PIERRE AUGER COLLABORATION (AUTOR 434 DE 474); M. TUEROS

Rio de Janeiro

Conferencia; 33rd International Cosmic Ray Conference (ICRC 2013); 2013

International Union of Pure and Applied Physics (IUPAP)

The AMIGA enhancement of the Auger Surface Detector consists of a 23.5 km2 infilled area where the shower particles are sampled by water Cherenkov detectors accompanied by 30 m2 of scintillator counters,buried 2.3 m underground. The accuracy of the muon counting obtained by the buried detectors is a basic element in the reconstruction procedure, and must be determined using experimental air shower data. To perform this measurement, twin muon counters (30+30 m2 ) have been deployed in two infill locations; their mutual distance being about 10 m, they sample nearly the same region of the air shower. In this paper we discuss the basic properties of the modules as measured during the construction phase and the expected counting performances of the twin counters installed at the experimental site.