The LIDAR systems for atmospheric monitoring in Auger

A LIDAR network is being built for the measurement and online monitoring of the atmospheric optical parameters, which play a central role in the energy measurement of ultra-high-energy cosmic rays. Four LIDAR systems, each one equipped by an Nd:YAG UV laser and three parabolic mirrors with PMTs for the detection of the backscatter photons, are scheduled to be installed in the proximity of the four fluorescence detectors of the Pierre Auger Observatory (Malargue, Argentina). In this paper a report describing hardware components, commissioning and shooting strategies of the LIDAR systems is given.