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3 August 1987 Solid-State 1024 Pixel Linear X-Ray Detector
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Proceedings Volume 0809, Scanning Imaging Technology; (1987)
Event: Fourth International Symposium on Optical and Optoelectronic Applied Sciences and Engineering, 1987, The Hague, Netherlands
An X-ray sensitive detector of 1024 pixels for non-destructive testing is described. The detection pitch is 0.45 mm and the total sensitive length is 460 mm. In standard operation, the detector is in the path of an X-ray beam collimated with a 0.45 mm slit. The detector delivers a digital video signal as an object is displaced at constant speed through the X-ray beam. The image is displayed on a TV monitor using a frame memory. Each line is read in 7.8 ms. A 1024 x 512 pixels image is read in 4.4 s. The detector is an assembly of 16 arrays of 64 silicon photodiodes. A scintillating screen converts the X-ray flux into visible photons to which the silicon photodiodes are sensitive. The photodiode arrays are multiplexed by silicon Charge Transfer Devices. The functions of the detector are as follows : multiplexing of the 1024 pixels signals, analog to digital conversion and level compensations. The correction levels are stored in a digital memory. The main characteristics of the detector are as follows - energy detection range : 10 keV - 250 keV - nominal X-ray energy : 60 keV - noise equivalent X-ray dose : 5 X photons at 60 keV on the detector - saturation level : 300 p,11. at 60 keV - dynamic range : > 4000. Some applications of these detectors are given.
© (1987) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
B. Munier, G. Roziere, P. Prieur, and H. Rougeot "Solid-State 1024 Pixel Linear X-Ray Detector", Proc. SPIE 0809, Scanning Imaging Technology, (3 August 1987);


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