Karlsruhe 2011 – scientific programme

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T: Fachverband Teilchenphysik

T 103: Kosmische Strahlung VI

T 103.1: Talk

Friday, April 1, 2011, 14:00–14:15, 30.41: 004

Primary energy reconstruction from the S(500) observable recorded with the KASCADE-Grande detector — •Gabriel Toma — National Institute for Physics and Nuclear Engineering - Horia Hulubei, Str. Atomistilor no. 407, Bucharest-Magurele, Romania

It has been shown that the particle density becomes independent of the primary mass at detector-specific and fixed distances from shower core and can be used as an estimator for the primary energy. This property of the density has been used by various experiments to infer the primary energy from the recorded particle density. In the context of the KASCADE-Grande experiment, the particular distance at which this effect takes place is around 500 m, hence the notation S(500) for the particle density a this specific range. The primary energy spectrum has been obtained from the recorded S(500) data using a simulation-derived dependence of primary energy with the S(500). A response matrix is used to account for the effects of fluctuations on the spectral index of the reconstructed energy spectrum.