¥The
new calibration procedure forces the mean of the time distribution of T0N and
T0P to be located at the required time.
¥The
time peaks are rather wide (1.2 ns) and the centroid of these distributions
must be determined with an accuracy of better than 100 ps.
¥The
distributions contain both primary and secondary contributions and we assume
the relative strength of these contributions is the same for all counters on
one array.