AMIGA, an enhancement of the Pierre Auger Observatory

I. SIDELNIK

San Carlos de Bariloche

Otro; ICFA School On Instrumentation in Elementary Particle Physics, San Carlos de Bariloche 11-22 de Enero de 2010; 2010

AMIGA (Auger Muons and Infill for Ground Array) constitutes one of the Pierre Auger Observatory final  stages for the southern site; it consists of a dense array of Surface Detectors and Muon Counters  with the clear objective of enlarging the detection range up to energies of 10$^{17}$eV. This increment  in energy range will be accompanied with further information about the mass composition of cosmic  rays. AMIGA data acquisition has started with the SD 750 m infilled area and preliminary analyzes  have already been performed. On the other hand the first module of the first Muon Counter has  been deployed with its electronics and is acquiring data too. Here we present preliminary results  on both infilled SD region angular resolution and a first view of muons over the very first module.