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Body scanner with radiation detector array - has several detectors grouped in evacuated housings but with constant detector spacing
Body scanner with radiation detector array - has several detectors grouped in evacuated housings but with constant detector spacing
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机译:带有辐射探测器阵列的人体扫描仪-将多个探测器组合在真空外壳中,但探测器间距恒定
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摘要
A body scanner using a fan-shaped beam of X-rays or gamma rays has a detector array comprising groups of germanium detectors (22-26; 30-34; 38-42) in evacuated housings (16, 17, 18). The spacing (a, b) between the end detectors in adjacent housings is arranged to be the same as the spacing between the detectors in each group. Each group has a common base (20, 28, 36) with slots (21, 29, 37) separating the individual detectors, and a ceramic substrate. The housing have radiation windows of aluminium and are contained in a cryostrat. A collimator is associated with the cryostrat.
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