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Proceedings Paper

Integration and calibration of DEPFET macropixel detectors for MIXS
Author(s): Petra Majewski; Florian Aschauer; Alexander Bähr; Giulio de Vita; Bettina Günther; Kathrin Hermenau; Sven Herrmann; Martin Hilchenbach; Thomas Lauf; Peter Lechner; Gerhard Lutz; Danilo Miessner; Matteo Porro; Jonas Reiffers; Gerhard Schaller; Florian Schopper; Heike Soltau; Alexander Stefanescu; Rafael Strecker; Lothar Strüder; Johannes Treis
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Paper Abstract

The Mercury Imaging X-ray Spectrometer (MIXS) is an instrument on board of the 5th ESA cornerstone mission BepiColombo. This Spectrometer comprises two instruments for imaging x-ray spectroscopy of the Mercury surface. The detector plane arrays (DPA) for the energy and spatial resolved detection of x-rays are based on DEPFET (Depleted P-channel FET) macropixel detectors with 64×64 pixel each and 300×300 μm2 pixel size. The MIXS target energy band is from 0.5 to 7 keV with an energy resolution better than 200 eV at 1 keV at mission end. This allows to access the Fe-L line at about 0.7 keV, which was not accessible to previous instruments, and to separate the x-ray lines of the elements of interest. Before a detector chip is integrated into a detector module, it is electrically pre-characterized in order to select only the best chips for the complex and time-consuming integration. The high degree of complexity of the integration process comes from the need to thermally decouple the detector chip from its readout and steering ASICs by a sophisticated mechanical structure, due to the limited amount of cooling power available for the instrument. After the spectroscopic characterization of the detector modules, the flight and flight spare detectors were calibrated at the PTB (Physikalisch-Technische Bundesanstalt) beamlines at the BESSY-II synchrotron. We report on the pre-characterization, integration, qualification and calibration of MIXS flight and flight spare detectors, which is now successfully completed.

Paper Details

Date Published: 25 September 2012
PDF: 9 pages
Proc. SPIE 8453, High Energy, Optical, and Infrared Detectors for Astronomy V, 84530Q (25 September 2012); doi: 10.1117/12.925929
Show Author Affiliations
Petra Majewski, PNSensor GmbH (Germany)
Florian Aschauer, Max-Planck-Halbleiterlabor (Germany)
Max-Planck-Institut für extraterrestrische Physik (Germany)
Alexander Bähr, Max-Planck-Halbleiterlabor (Germany)
Max-Planck-Institut für extraterrestrische Physik (Germany)
Giulio de Vita, Max-Planck-Halbleiterlabor (Germany)
Max-Planck-Institut für extraterrestrische Physik (Germany)
Bettina Günther, Max-Planck-Halbleiterlabor (Germany)
Max-Planck-Institut für extraterrestrische Physik (Germany)
Kathrin Hermenau, PNSensor GmbH (Germany)
Sven Herrmann, Max-Planck-Halbleiterlabor (Germany)
Max-Planck-Institut für extraterrestrische Physik (Germany)
Martin Hilchenbach, Max-Planck-Institut für Sonnensystemforschung (Germany)
Thomas Lauf, Max-Planck-Halbleiterlabor (Germany)
Max-Planck-Institut für extraterrestrische Physik
Peter Lechner, PNSensor GmbH (Germany)
Gerhard Lutz, PNSensor GmbH (Germany)
Danilo Miessner, Max-Planck-Halbleiterlabor (Germany)
Max-Planck-Institut für extraterrestrische Physik (Germany)
Matteo Porro, Max-Planck-Halbleiterlabor (Germany)
Max-Planck-Institut für extraterrestrische Physik (Germany)
Jonas Reiffers, Max-Planck-Halbleiterlabor (Germany)
Max-Planck-Institut für extraterrestrische Physik (Germany)
Gerhard Schaller, Max-Planck-Halbleiterlabor (Germany)
Max-Planck-Institut für extraterrestrische Physik (Germany)
Florian Schopper, Max-Planck-Halbleiterlabor (Germany)
Max-Planck-Institut für extraterrestrische Physik (Germany)
Heike Soltau, PNSensor GmbH (Germany)
Alexander Stefanescu, Max-Planck-Halbleiterlabor (Germany)
Max-Planck-Institut für extraterrestrische Physik (Germany)
Rafael Strecker, Max-Planck-Halbleiterlabor (Germany)
Max-Planck-Institut für extraterrestrische Physik (Germany)
Lothar Strüder, Max-Planck-Halbleiterlabor (Germany)
Max-Planck-Institut für extraterrestrische Physik (Germany)
Johannes Treis, PNSensor GmbH (Germany)


Published in SPIE Proceedings Vol. 8453:
High Energy, Optical, and Infrared Detectors for Astronomy V
Andrew D. Holland; James W. Beletic, Editor(s)

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