Record Details

Title:
Methods for the System Calibration of the DSSC Detector for the European XFEL
Affiliation(s):
EuXFEL staff
Author group:
Detector Development
Keyword(s):
Topic:
Scientific area:
Abstract:
The DSSC (DEPFET Sensor with Signal Compression) is a silicon based, 2d imaging detector for the European X-ray Free Electron Laser facility (European XFEL) in Hamburg and Schenefeld, Germany. The megapixel camera is foreseen for soft X-radiation from 0.5 keV up to 6 keV. Driven by the scientific requirements of the planned experiments, 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 at the analog signal stage either in the silicon sensor pixels or in the read-out ASIC, 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. Due to inhomogeneities in the chip production and in the biasing of the large format detector chips, each of the one million pixels will have to be calibrated individually. This work presents an overview over the building blocks of the detector system and an introduction to the proposed calibration strategy. It proposes and compares several methods for the detector gain and offset calibration and the characterization of the system noise and evaluates their performance on datasets comparable to data expected from the full-format camera, that will be available in autumn 2018. The experimental part focusses on the adaption of the proposed methods on data measured with DSSC prototypes. A successful cross check of the calibration strategy using different calibration energies is presented.
Imprint:
Schenefeld, Germany, European XFEL, 2018
Related external records:
urn: nbn:de:gbv:18-92990
Language(s):
English
Degree type:
Ph.D. Thesis
Starting date:
2018-09-10
Ending date:
2018-09-10
Year granted:
2018
University name:
University of Hamburg


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 Record created 2019-08-06, last modified 2019-08-06

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