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T: Fachverband Teilchenphysik
T 98: Kosmische Strahlung 6
T 98.2: Vortrag
Donnerstag, 12. März 2009, 17:00–17:15, M118
Fast simulation of energy spectra of secondary EAS particles in Grande detectors and realistic computation of Lateral Energy Correction Functions — •Cristian Manailescu1,2, Claudia Morariu1,2, Gabriel Toma3, Octavian Sima1, Heinigerd Rebel1, and Andreas Haungs1 — 1Institut für Experimentelle Kernphysik, Forschungszentrum Karlsruhe, Postfach 3640, Karlsruhe — 2University of Bucharest, RO-077125 POBox MG-11, Romania — 3NIPNE-Bucharest, Romania
The KASCADE-Grande experiment at the Karlsruhe research center measures Extensive Air Showers by detecting the secondary particles created in the atmosphere and arriving the ground level. The main goal of this work is to determine the Lateral Energy Correction Function (LECF) which is required for converting the energy deposit measured by the GRANDE detectors (without discrimination of any particle types) into particle densities. In a first step, detailed energy deposition patterns for all the secondary particles of interest (electrons, muons, photons, protons and neutrons) were computed with GEANT 3.21 for a grid of energies and incidence angles. Then the energy deposition spectra were fitted to a superposition of distribution functions which can be sampled much faster than using GEANT. Next the parameters of these distribution functions as a function of energy and angle were obtained for each type of particle. Finally the fast procedure proposed for the computation of the energy deposition was applied to the distribution of the secondary EAS particles simulated with CORSIKA for obtaining realistic LECF.