1. 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

2. The KASCADE-Grande experiment
KASCADE-Grande (Karlsruhe Shower Core and array detector)
E = 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

3. 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

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

5. 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

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

7. 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

8. 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

9. 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

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

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

12. 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