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Abstract

This thesis deals with the initial operation and partial characterization of a phosphor screen type detector intended to be used in reaction microscopes. First detector images generated by bombarding a regular shadow mask with particles of an α source (²⁴¹Am, total activity of 3.7 MBq) could be recorded successfully. Amongst others, one had to pay attention to a sufficient shielding against ambient luminosity. Moreover, an exact adjustment of the CCD camera's objective lens is of great importance. After finding adequate operational settings of the detector, a long-time exposure (Δt = 1000 min) of the imaged mask was realized. Out of this exposure, an upper limit of the detector's mean spatial resolution could be extracted to (388 ± 43) μm. In conclusion, this work covers a first testing phase as well as characterization of the detector.