Upper view of the shielding of lead bricks (20 cm) and copper sheets ( 3-9 mm) surrounding the three NaI scintillators (10.7 kg each).
Upper view of the shielding of lead bricks (20 cm) and copper sheets ( 3-9 mm) surrounding the three
NaI scintillators (10.7 kg each).
The lead shielding enclosed in a PVC box silicone sealed to avoid airborne radon contamination.
Shielding surrounded by cadmium sheets (thermal neutron absorber). 20 cm of paraffin were added as neutron moderator.