Physics – Nuclear Physics
Scientific paper
Jan 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006nuphs.150..181a&link_type=abstract
Nuclear Physics B Proceedings Supplements, Volume 150, p. 181-185.
Physics
Nuclear Physics
Scientific paper
The Pierre Auger Observatory intends to measure the energy spectrum, the arrival direction and the mass composition of cosmic rays above 1018 eV with exceptionally low statistic and systematic uncertainties. Therefore the international Auger collaboration is now constructing in the Pampa Amarilla - Province of Mendoza, Argentina - a hybrid detector consisting of an array of 1600 water-Cherenkov Surface Detectors (SD) on a 1.5 km triangular grid and 24 fluorescence telescopes (FD) in 4 stations on the perimeter of the 3000 km2 experimental area. In the first phase of the project, all detector sub-systems were successfully tested under field conditions with the engineering array prototype. With only minor modifications the final components are now built, installed and commissioned. This paper describes the hybrid design of the Observatory (SD, FD), the current status of construction and the first preliminary experimental results gained during regular operation in the installation phase. The Southern Observatory is scheduled for completion by end of 2005. It will be complemented by a Northern experiment in Utah or Colorado to achieve uniform full sky coverage.
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