URL: https://physikseminar.desy.de/zeuthen/past_colloquia/colloquia_in_2011/january_19_2011/@@siteview
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Calibration of the Pierre Auger Observatory with LHC Forward Detectors
Ralf Ulrich (Karlsruhe Institute of Technology)
Seminar Room 3, 15:00h
The analysis of cosmic ray data at the highest energies greatly suffers
from the limited understanding of hadronic interactions occurring within
extensive air shower cascades. For example, it is still not possible to
derive reliable and robust measurements of the primary cosmic ray mass
composition. However, this is the crucial piece of information that is
missing to solve large parts of the cosmic ray puzzle up to the very
highest energies. The forward detectors at LHC offer the opportunity to
significantly contribute to the improvement of the analysis of cosmic
ray data, and thus directly help to find the sources and nature of
ultra-high energy cosmic rays. Furthermore, it is a fact that cosmic ray
data is sensitive to hadronic interaction physics up to ~400 TeV. Given
a very much improved understanding of the nature of cosmic ray data, it
is thus possible to extend some hadronic interaction physics
measurements up these extreme energies -- far beyond the reach of the
LHC.
