Abstract
Using a linear array detector module, we have developed a portable X-ray scan system of 430( L)×62( W)×35( H) mm 3. The system is a battery-powered portable X-ray scan system that offers a maximum scan speed of 44 cms −1. The scanner module consists of a phosphor screen of Lanex regular TM coupled with linear array photodiodes of 0.1 kΩ cm and front-end electronics based on discrete charge-sensitive preamplifiers (C-amp). To derive the optimum performance of the X-ray scanner, the key components, including its PIN-type photodiode, feedback capacitor and resistor in C-amps, were investigated in terms of electronics and radiation responses. With an optimum combination of key components, the system showed a dynamic range of about 3500 and an image lag of 1 at a maximum scan speed in the X-ray condition of 100 kV/3 mA.
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