par Maris, Ioana Codrina
Référence 32nd International Cosmic Ray Conference, ICRC 2011(Code 104676: 11 August 2011 through 18 August 2011: Beijing; China), Proceedings of the 32nd International Cosmic Ray Conference, ICRC 2011, Institute of High Energy Physics, Vol. 1, page (267-270)
Publication Publié, 2011
Publication dans des actes
Résumé : We present a first analysis of cosmic rays observed with the AMIGA infill array of the Pierre Auger Observatory. The spacing of 750m between the surface detectors, half the distance of the regular array, allows us to extend the energy range of interest to energies as low as 3×1017 eV. The lateral distribution function is presented and the uncertainty of the signal at an optimum distance of 450 m, used to obtain an energy estimator, is discussed. The first steps towards the measurement of the energy spectrum are described. The calculation of the array exposure and the strategy for the energy calibration of the infill, obtained from events observed in coincidence with the fluorescence detector, are presented.