Alternative Clustering for HyCal

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Alternative Clustering for HyCal
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Cluster Identification Algorithm

• Find the largest ADC value in HYCAL raw ADC bank
  to identify the first center.
• Loop through the rest of the ADC bank to identify
  members of the cluster. ((xcenter-xmember)2(ycent
  er-ymember)2lt9.66cm)
• Repeat the same procedure with remaining subset
  of ADC hits until all entries in HYCAL raw ADC
  bank are expired.

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Cluster Reconstruction

• Subtract pedestals. Check for (ADC
  pedestal_mean 3x s) gt 0.
• Apply gain constants.
• Accept clusters with energy greater than 50 MeV
  only.
• Reconstruct coordinates using logarithmic method.
  Calculating the coordinate weight as w 10
  ln(Ei/E). (Weighted Center of Gravity Method)

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