A gas microstrip detector for X-ray imaging with readout of the anode by resistive division

The results are presented of a development programme aimed at the validation of the key concepts and technologies for the construction of a two-dimensional X-ray detector based on gas microstrip detector technology using resistive division along the anode to achieve the second dimension. A prototype detector and its associated electronic readout system have been developed which demonstrate the capability of a spatial resolution (standard deviation) of approximately 11000 of the working aperture combined with readout rates of up to 400kHz per anode. Test results and a description of the position sensing circuitry are given.