Abstract
The two-dimensional interpolating readout, a new readout concept based on resistive anode structure, was studied for the micro-pattern gaseous detector. Within its high spatial resolution, the interpolating resistive readout structure leads to an enormous reduction of electronic channels compared with pure pixel devices, and also makes the detector more reliable and robust, which is attributed to its resistive anode relieving discharge. A GEM (gaseous electron multiplier) detector with 2D interpolating resistive readout structure was set up and the performance of the detector was studied with 55Fe 5.9 keV X-ray. The detector worked stably at the gain up to 3.5×104 without any discharge. An energy resolution of about 19%, and a spatial resolution of about 219 μm (FWHM) were reached, and good imaging performance was also obtained.
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