Spatial Resolution Measurements of Gallium Arsenide Microstrip Detectors
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چکیده
Results are reported from beam test measurements of one of the first commercial prototype gallium arsenide microstrip detectors. The detector consisted of 128 strips on a 50μm pitch, with a wafer thickness of 200μm. Operating at a bias of 180V, the detector produced a signal to noise ratio of 19 to 1, with a particle detection efficiency of better than 99%. The spatial resolution of the detector was measured as 14.6μm without charge sharing effects. Charge sharing between pairs of strips was seen to improve the spatial resolution, with an average value for all events of 10.4μm.
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تاریخ انتشار 2007