370
7
3S
1a0°
HIGH RANGE
longitudinal axis of the detector for both ranges.
beam radiation (Co™). Response is symmetrical about the
Figure C.3 Directional response characteristics of UW-GITR detector
for paralleg
{
LOW RANGE
CHAMBER
LOW RANGE
PN RANGE
shielding).
of the sensitive volume (high- range detector was included to obtain typical
perpendicular to the detector axis. The diagram in the center of the plot shows
the arrangement of the two detectors used in the field and the approximate center
Figure C.4 Directional response of ASEL-GITR low-range detector in a plane
X RAY ENERGY: 120 KEV