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Reconstruction of total muon number in KASCADE-Grande

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Reconstruction of total muon number in KASCADE-Grande

Number of charged particles Nch

Number of muons Nm

KASCADE-Grande

- Area of 0.5km2
- 370m2 of detector surface
- Threshold of 5MeV for e/g+m

KASCADE Array

- 192 stations
- 622m2 detector surface
- Threshold 230MeV for m

Jurriaan van Buren for KASCADE-Grande Collaboration

1·1017eV - 2 ·1017eV

Jurriaan van Buren for KASCADE-Grande Collaboration

- Energy deposit of shower particles in scintillation detector
- Additional contribution from the conversion of gamma component and hadrons
- Lateral Energy Correction Function (LECF) gives average energy deposit per charged lepton
- particle densities in detector
- Fit of density distribution with Lateral Distribution Functions
- shower core and first estimate of particle numbers Ne, (Nm)
- arrival times to determine shower direction q, f
- combined fit to obtain better results
- derive muon number from KASCADE array muon detectors

Jurriaan van Buren for the KASCADE-Grande Collaboration

- false reconstructed shower cores at border of Grande Array
- definition of fiducial area 600·600m2

- KASCADE Stations mostly between 275 – 625m
- measure rm

Dr<11m, 11m<Dr<30m, Dr>30m

Jurriaan van Buren for KASCADE-Grande Collaboration

1017eV, p + Fe, 22 °

Modified Lagutin function:

with r0=430m

NKG-function:

with rmol=590m, s=1.2

Jurriaan van Buren for KASCADE-Grande Collaboration

- Error of ≈ 30% in region of full efficiency
- In radius region of most events error of ≈ 20%

Jurriaan van Buren for KASCADE-Grande Collaboration

- Error ≈ 30% in region of full efficiency
- In radius region of most events error ≈ 10%

Jurriaan van Buren for KASCADE-Grande Collaboration

Jurriaan van Buren for KASCADE-Grande Collaboration

Jurriaan van Buren for KASCADE-Grande Collaboration