CIC method applied to the KASCADE-Grande muon data Juan Carlos Arteaga-Velázquez for the KASCADE-Grande Collaboration Institute of Physics and Mathematics Universidad Michoacana CIC method applied to KG muon data – J.C. Arteaga Malargüe 2008, PAO Coll. Meeting

The KASCADE-Grande experiment KASCADE-Grande (Karlsruhe Shower Core and array detector) E = 1016 - 1018 eV Grande detectors measure e/ +  component simultaneously KASCADE shielded scintillators allow to measure  component of EAS. (E > 230 MeV  sec) CIC method applied to KG muon data – J.C. Arteaga Malargüe 2008, PAO Coll. Meeting

Reconstruction of N Measured  densities in KASCADE (r) = N  f(r) N =  n(ri) /  [f(ri)Aicos(z)] f(r) known from MC simulations N corrected from reconstruction systematics CIC method applied to KG muon data – J.C. Arteaga Malargüe 2008, PAO Coll. Meeting

Muon spectra KG data Teff = 603.1 days Events 53423 28053 7082 1657 CIC method applied to KG muon data – J.C. Arteaga Malargüe 2008, PAO Coll. Meeting

Integral muon spectra Apply cut at constant Jcut For a given Jcut, get N() CIC method applied to KG muon data – J.C. Arteaga Malargüe 2008, PAO Coll. Meeting

Muon attenuation curves Get attenuation curves Choose the mean CIC method applied to KG muon data – J.C. Arteaga Malargüe 2008, PAO Coll. Meeting

Reference angle Find reference angle ref for normalization:  N24 of each event For the moment use only showers < 42o CIC method applied to KG muon data – J.C. Arteaga Malargüe 2008, PAO Coll. Meeting

Muon spectra Good agreement between muon spectra for vertical showers CIC method applied to KG muon data – J.C. Arteaga Malargüe 2008, PAO Coll. Meeting

Muon spectra Difference between MC and KG muon attenuation lengths FLUKA/QGSJET II CIC method applied to KG muon data – J.C. Arteaga Malargüe 2008, PAO Coll. Meeting

Muon spectrum for vertical showers CIC method applied to KG muon data – J.C. Arteaga Malargüe 2008, PAO Coll. Meeting

Muon number systematic uncertainties CIC method applied to KG muon data – J.C. Arteaga Malargüe 2008, PAO Coll. Meeting

Summary Using the CIC method, we compared the muon spectra for different  without the influence of MC models. Good agreement among reconstructed muon spectra from KG data on vertical showers with the CIC method. Simulated Λ is different from the one obtained from the CIC method and the KG data. CIC method applied to KG muon data – J.C. Arteaga Malargüe 2008, PAO Coll. Meeting