Patent ID: 7082186

Claim:
A container inspection equipment with the cobalt-60 γ-ray source or the cesium-137 γ-ray source and a cesium iodide or cadmium tungstate detector, comprising: a γ-ray source and a cask for shielding the source; a front collimator and a rear collimator; a detector and the related electronic circuit; a signal and image processing system; and a container trailer system and an automatic control system, wherein: the radiation source is a cobalt-60 γ-ray source or a cesium-137 γ-ray source; the detector is a cesium iodide or cadmium tungstate array detector; the cobalt-60 γ-ray source or the cesium-137 γ-ray source is equipped with a beam shutter configured to automatically open and close, the beam shutter is connected with the cask of the γ-ray source; the cesium iodide or cadmium tungstate array detector is a strip array constituted of blocks in series arrangement consisting cesium iodide or cadmium tungstate scintillator crystals each coupled to a silicon photodiode and an electrical circuit; the cask of the cobalt-60 γ-ray source or the cesium-137 γ-ray source, the beam shutter, and the front collimator are fixed on a first common chassis that is placed in a source room; the rear collimator, the cesium iodide or cadmium tungstate array detector and a radiation catcher are fixed on a second common chassis that is placed in a detector room; and between the source room and the detector room is a container inspection tunnel.