Section 2 System Description
11
2.3.2 Configuration for Free Fall Measurement
Using a clamping device, the radiation source (rod source) in its
shielding is installed on one side of the fall-pipe and the detector
on the opposite side. The radiation entrance window is located on
the front side of the detector.
with screw thread and protection plate
Shielding Bolt bar Shielding plate Detector
Figure 3: Top view of configuration for free measurement
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