Perfomance of the Pierre Auger Observatory Surface Array

TIINA SUOMIJARVI, FOR THE PIERRE AUGER COLLABORATION (VER F. SUAREZ EN LISTA ICRC2007 EN HTTP://WWW.AUGER.ORG/AUGER-AUTHORS.PDF)

Merida, Mexico

Conferencia; 30th International Cosmic Ray Conference, ICRC2007; 2007

The Surface Detector of the Pierre Auger Observatory will consist of 1600 water Cherenkov tanks sampling ground particles of air showers produced by energetic cosmic rays. The arrival times are obtained from GPS and power is provided by solar panels. The construc- tion of the array is nearly completed and a large number of detectors has been operational for more than three years. In this paper the performance of different components of the detectors are discussed. The accuracy of the signal measurement and the trigger stability are presented. The performance of the solar power system and other hardware, as well as the water purity and its long-term stability are discussed.