Reconstruction of total muon number in kascade grande
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Reconstruction of total muon number in KASCADE-Grande. Number of charged particles N ch. Number of muons N m. KASCADE-Grande. Area of 0.5km 2 370m 2 of detector surface Threshold of 5MeV for e/ g + m. KASCADE Array. 192 stations 622m 2 detector surface Threshold 230MeV for m.

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Reconstruction of total muon number in KASCADE-Grande

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Reconstruction of total muon number in kascade grande

Reconstruction of total muon number in KASCADE-Grande


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


Determine composition with n e and n m

1·1017eV - 2 ·1017eV

Determine composition with Ne and Nm

Jurriaan van Buren for KASCADE-Grande Collaboration


Kascade grande reconstruction

KASCADE-Grande reconstruction

  • 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


Fiducial area

Fiducial area

  • 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


Lateral density function for muons

Lateral density function for muons

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


Reconstruction accuracy

Reconstruction accuracy

  • Error of ≈ 30% in region of full efficiency

  • In radius region of most events error of ≈ 20%

Jurriaan van Buren for KASCADE-Grande Collaboration


Reconstruction accuracy1

Reconstruction accuracy

  • Error ≈ 30% in region of full efficiency

  • In radius region of most events error ≈ 10%

Jurriaan van Buren for KASCADE-Grande Collaboration


First data

First data

Jurriaan van Buren for KASCADE-Grande Collaboration


Reconstruction of total muon number in kascade grande

Jurriaan van Buren for KASCADE-Grande Collaboration


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