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A computer-controlled x-ray imaging scanner using a kinestatic charge detector

Wagenaar Douglas J. , DiBianca Frank A. , Tenney Charles R. , Vance Joseph E., Reed Mark S. C. , Wilson Donald W., Dollas Apostolos, McDaniel David L., Granfors Paul, Petrick Scott

Πλήρης Εγγραφή


URI: http://purl.tuc.gr/dl/dias/29B7708D-C804-44C4-9E6C-1E9DDEC51151
Έτος 1990
Τύπος Δημοσίευση σε Περιοδικό με Κριτές
Άδεια Χρήσης
Λεπτομέρειες
Βιβλιογραφική Αναφορά D. Wagenaar, F. DiBianca, C. Tenney, J. Vance, M. Reed, D. Wilson, A. Dollas, D. McDaniel, P. Granfors and S. Petrick, "A computer-controlled x-ray imaging scanner using a kinestatic charge detector", Rev. Scient. Instrum., vol. 61, no. 2, pp. 701-711, Feb. 1990. doi:10.1063/1.1141481 https://doi.org/10.1063/1.1141481
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Περίληψη

A prototype scanning imaging system which employs a kinestatic charge detector (KCD) and is under the control of a VAXstation II/GPX computer is described. The operating principles and advantages of the KCD method are reviewed. The detector is a 256-channel ionization drift chamber which creates a two-dimensional x-ray projection image by scanning the detector past the object of interest. The details of the drift chamber design, the signal collection electrodes (channels), and the Frisch grid geometry are given. Also described are the scanning gantry design, computer-controlled drive motor circuit, and safety features. The data acquisition system for the capture of a 1 M byte digital image is presented. This includes amplification, filtration, analog-to-digital conversion, data buffering, and transfer to the VAXstation II computer. The image processing and display techniques specific to the KCD are outlined and the first two-dimensional image taken with this system is presented.

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