A computer-controlled x-ray imaging scanner using a kinestatic charge detectorA computer-controlled x-ray imaging scanner using a kinestatic charge detector Peer-Reviewed Journal Publication Δημοσίευση σε Περιοδικό με Κριτές 2015-11-031990enA 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.http://creativecommons.org/licenses/by/4.0/Review of Scientific Instruments612701-711 Wagenaar Douglas J. DiBianca Frank A. Tenney Charles R. Vance Joseph E. Reed Mark S. C. Wilson Donald W. Dollas Apostolos Δολλας Αποστολος McDaniel David L. Granfors Paul Petrick Scott AIP Publishing Image sensors Image detection systems Ionizing radiation Electrodes Data acquisition