The values of the ADC weighting exponent 
and 
have
been determined by
optimizing the average
angular resolution 
of both the NaI and CsI detectors.
Using the GEANT
code to simulate the box spectrum of 55-83 MeV photons from the
single charge exchange reaction 
, the
average angular resolution has been minimized with respect
to and . The
plots of against 
are shown in Fig. 5.1
for the CsI and NaI detectors. The cut imposed on these measurements
requires that the sum of the energies deposited into the ``inner''
(See Chapter 2) detectors of each array exceed 50 MeV.
Figure 5.1: Angular resolution plotted against the ADC weighting
exponent for CsI and NaI, with angle of incidence
corrections.
From Fig. 5.1, it is clear that the optimal values for
the weighting exponents are 
, and
.