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Abstract

The DEPFET Sensor with Signal Compression (DSSC) will be a 2d 1Mpx imaging detector for the European X-­ray Free Electron Laser Facility (XFEL.EU). The DSSC is foreseen as an imaging detector for soft X-­radiation from 0.5 keV up to 6 keV. Driven by its scientific requirements, the design goals of the detector system are single photon detection, a high dynamic range and a high frame rate of up to 4.5 MHz. Signal compression, amplification and digitization will be performed in the focal plane. Utilizing an in-­pixel active filtering stage and an 8/9-­bit ADC, the detector will provide parallel readout of all pixels. Here the results of studies on the stability and performance of a parameterized model for determining gain and offset in DSSC prototype calibration line spectra will be presented.

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