Nils Scharf Aachen

The High Elevation Auger Telescopes and the Tilt Monitoring System (ppt)

The low energy enhancements for the Pierre Auger Observatory will lower the accessible energy range for cosmic rays from 10^{18} eV to 10^{17} eV. This energy regime is very interesting, for example the transition from galactic to extragalactic cosmic rays might happen here. Furthermore, measurements at these energies allow for cross checks with other cosmic ray experiments. The fluorescence part of the detector enhancement is called HEAT - High Elevation Auger Telescopes. These three additional telescopes have a field of view of 30° to 60° from the horizon, compared to 0° to 30° for the standard telescopes. This is achieved by tilting a standard Auger telescope by 30° upwards. Possible mechanical deformations of the telescope geometry have to be measured continuously. The Tilt Monitoring System measures distances and inclinations inside the HEAT telescope buildings. The HEAT enhancement and first results from a test setup for the Tilt Monitoring System are described.