Sonja Schröder

First Analyses of the AugerPrime Engineering Array(pdf)

The Pierre Auger Observatory in Argentina is able to detect cosmic rays of the highest energies and determine the composition of the primary particles with the use of 1660 Water Cherenkov Detectors (SD) and 27 fluorescence telescopes (FD). The upgrade AugerPrime is designed to improve these measurements. Surface Scintillator Detectors (SSD) on top of each SD detector station allow a complementary measurement of the airshower's electromagnetic and muonic component. This talk studies the data quality and first physics results of two detector stations in immediate vicinity of each other. These twin stations are located in the center of a hexagonal sub-array were spacing is reduced from 1500 m to 433 m, which yields a lower energy threshold of ∼ 10^(16.5) eV, as well as 10 times higher event statistics.