INSTITUTO DE FISICA LA PLATA
Unidad Ejecutora - UE
congresos y reuniones científicas
Energy calibration of data recorded with the surface detectors of the Pierre Auger Observatory
THE PIERRE AUGER COLLABORATION (AUTOR 434 DE 474); M. TUEROS
Conferencia; 31st International Cosmic Ray Conference; 2009
The energy of the primary particles of air showers recorded using the water-Cherenkov detectors of the Pierre Auger Observatory is inferred from simultaneous measurements of showers together with the fluorescence telescopes. The signal on the ground at 1000 m from the shower axis obtained using the water-Cherenkov detectors is related directly to the calorimetric energy measured with the telescopes.The energy assignment is therefore independent of air-shower simulations except for the assumptions that must be made about the energy carried into the ground by neutrinos and muons. The correlationbetween the signal at ground and the calorimetric energy is used to derive a calibration curve. A detailed description of the method used to determine the energy scale is presented. The systematic uncertainties on the calibration procedure are discussed.