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A unique feature of the GC60 facility allows instruments, material samples and specimens of any type of material in need of testing to be irradiated with accurate doses. The beam calibrator consists of four pneumatically operated shielded sources, a beam collimator to define and limit the extent of the useful beam, a linear positioning track, an interlock system and a control panel. With the two irradiators in the GC60, several different irradiation energies (gamma and X-ray) are available; doses can be further controlled using a remotely operated, computer-controlled positioning system.
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