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T: Teilchenphysik
T 501: Kosmische Strahlung VII
T 501.6: Talk
Wednesday, March 12, 2003, 17:30–17:45, FO6
Multivariate Analysis of the EAS Observables Measured by Muon Tracking Detector and Field Array at KASCADE — •A. F. Badea1, P. Doll2, A. Haungs2, C. Büttner1, and J. Zabierowski3 — 1Institut für Experimentelle Kernphysik, Universität Karlsruhe, 76021 Karlsruhe, Germany — 2Forschungszentrum Karlsruhe, Institut für Kernphysik, 76021 Karlsruhe — 3Soltan Institute for Nuclear Studies, 90950 Lodz, Poland
The multi-detector KASCADE enables simultaneous (event-by-event)
observations of a large number of parameters characterising the EAS. The
Muon Tracking Detector (MTD) at KASCADE is used for the determination of
the lateral distribution and angles-of-incidence of EAS muons with 0.8
GeV energy threshold. The angles-of-incidence of the muons (with respect to
the shower axis) are strongly correlated with the muon production heights
and therefore they depend on the primary mass [1]. By using a
multidimensional
correlation between MTD and Field Array (FA) observables (i.e. muon
angles-of-incidence, electron and muon shower sizes, core position and
shower inclination) the primary mass discrimination has been investigated.
A conspicuous improvement of the mass discrimination is found by adding the
muon angles-of-incidence in the analysis. A comparison between the primary
mass composition obtained from FA observables only and the primary mass
composition adding MTD observables and the MTD & FA correlations
provides
the possibility to test the consistency of hadronic interaction models
underlying the multiparametric analysis.
[1] see also C. Büttner, this session