Calibration of the Non-Linear System Characteristic of a prototype of the DSSC detector for the European XFEL

Moch, D.; Weidenspointner, G.; Schlee, S.; Bähr, Alexander; Porro, M.; Erdinger, Florian; Fischer, P.; Kirchgeßner, M.; Soldat, Jan; Hansen, Karsten; Reckleben, Christian

doi:10.1109/nssmic.2014.7431077

Cited by 3 publications

(1 citation statement)

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“…The DSSC's non-linear system characteristic (NLSC, see also section 2) describes the relation between the signal charge collected in a sensor pixel and the respective digital output of the system. A calibration strategy for the NLSC of the DSSC detector has been proposed [8,9] and a first experimental validation has been given [10]. An update on the calibration strategy and results is presented in these proceedings [11].…”

Section: Introductionmentioning

confidence: 99%

Methods for calibrating the gain and offset of the DSSC detector for the European XFEL using X-ray line sources

et al. 2016

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The DSSC (DEPFET Sensor with Signal Compression) will be a silicon based, 2d 1 Mpx imaging detector for the European X-ray Free Electron Laser Facility (XFEL.EU) in Hamburg, Germany. The DSSC is foreseen 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, high dynamic range and a high frame rate of up to 4.5 MHz. Signal compression and amplification will be performed in the silicon sensor pixels yielding a low signal noise. Utilizing an in-pixel active filtering stage and an 8/9-bit ADC, the detector will provide parallel read-out of all pixels. In order to calibrate offset and gain, the procedure currently under investigation relies on determining peak positions in measurements with calibration line sources such as 55 Fe. Here the status of studies of the stability and performance of a parameterized fit function designed for this task will be presented.

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