Scalers

• Clusterer (CTP) - one scaler for each crystal
  • FADC hits - hits on the given crystal received by CTP from FADCs
  • Cluster seed count - number of clusters found centering on the given crystal
  • Cluster add count - number of clusters found with energy contributions from the given crystal
• Trigger decision information (SSP)
  • Cluster pairs surviving each trigger cut - one scaler per trigger cut

Event data

• Cluster positions (IDs of center crystals) and energy