User name real
Log entry time 15:20:16 on November 16,2002
Entry number 51652
This entry is a followup to: 7738
keyword=high counting rates in small french detectorsWe took 1 run (14181) for which we swapped the det 1 between octant 1 and 8.
Results can be seen on the figure (all counting rates are normalized with octant 7):
-Octant 1 : red points, the det 1 pass through the NA electronics
green points, the det 1 pass through the FR electronics, counting rates are much higher.
-Octant 8 :red points, the det1 pass through the FR electronics, large counting rates observed.
:green points,the det 1 pass through the NA electronics, counting rates are the same than the NA (value around 1).
so large counting rates in small FR detectors are due to electronics (splitter or CFD)
investigation continue...
FIGURE 1
