You inquired about the inputs to the integrating scalers used during the
tagged photon run. The inputs to the first scaler (slot 3, address 3 in croc16)
are as follows (log book p.135) :
Channel
1 clock 10KHz
2..8 empty
9 Master OR
10 PC (pair counter)
11 PS (pair spectrometer)
12 TAC (total absorption counter)
Hope this helps,
Elton.