Collimating slugs are designed to produce a known diameter
spot of radiation at the isocenter of the linear accelerator and attenuate
any radiation outside of the spot. The collimating slug has a conical bore
with an angle of divergence to match the diverging radiation beam.
Specifications
Approximate slug weight:
9.2 kg (20 lbs)
Overall size:
95 mm diameter × 155 mm length
Fourteen sizes available; size designation refers to the
diameter of the beam at isocenter in centimeters.