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Proceedings Paper

Design and performance of the eROSITA focal plane instrumentation
Author(s): Norbert Meidinger; Robert Andritschke; Florian Aschauer; Johannes Elbs; Tanja Eraerds; Stefanie Granato; Olaf Hälker; Gisela Hartner; Danilo Mießner; Daniel Pietschner; Peter Predehl; Jonas Reiffers; Lothar Strüder; Andreas von Kienlin; Sabine Walther
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Paper Abstract

We developed and tested X-ray PNCCD focal plane detectors for the eROSITA (extended ROentgen Survey with an Imaging Telescope Array) space telescope. General scientific goal of the eROSITA project is the exploration of the X-ray universe in the energy band from about 0.2 keV up to 10 keV with excellent energy, time, and spatial resolution in combination with large effective telescope areas. The observational program divides into an all-sky survey and pointed observations. The mission duration is scheduled for 7.5 years. The German instrument will be launched in near future to the Lagrange point L2 on the Russian satellite SRG. The detection of single X-ray photons with precise information about their energy, angle of incidence and time is accomplished for eROSITA by an array of seven identical and independent PNCCD cameras. Each camera is assigned to a dedicated mirror system of Wolter-I type. The key component of the camera is a 5 cm • 3 cm large, back-illuminated, 450 μm thick and fully depleted frame store PNCCD chip. This chip is a further development of the sensor type that is in operation as focal plane detector on the XMMNewton satellite since launch in 1999 to date. Development and production of the CCDs for the eROSITA project were performed by the MPI Halbleiterlabor, as already in the past for the XMM-Newton project. According to the status of the project, a complete design of the seven flight cameras including the camera electronics and the filter wheel has been developed. Various functional and performance tests have been accomplished for a detailed characterization of the eROSITA camera system. We focus here especially on the focal plane detector design and the performance of the detectors, which are essential for the success of the X-ray astronomy space project.

Paper Details

Date Published: 25 September 2012
PDF: 11 pages
Proc. SPIE 8453, High Energy, Optical, and Infrared Detectors for Astronomy V, 84530P (25 September 2012); doi: 10.1117/12.925367
Show Author Affiliations
Norbert Meidinger, Max-Planck-Institut für extraterrestrische Physik (Germany)
Max-Planck-Institut Halbleiterlabor (Germany)
Robert Andritschke, Max-Planck-Institut für extraterrestrische Physik (Germany)
Max-Planck-Institut Halbleiterlabor (Germany)
Florian Aschauer, Max-Planck-Institut für extraterrestrische Physik (Germany)
Max-Planck-Institut Halbleiterlabor (Germany)
Johannes Elbs, Max-Planck-Institut für extraterrestrische Physik (Germany)
Max-Planck-Institut Halbleiterlabor (Germany)
Tanja Eraerds, Max-Planck-Institut für extraterrestrische Physik (Germany)
Max-Planck-Institut Halbleiterlabor (Germany)
Stefanie Granato, Max-Planck-Institut für extraterrestrische Physik (Germany)
Max-Planck-Institut Halbleiterlabor (Germany)
Olaf Hälker, Max-Planck-Institut für extraterrestrische Physik (Germany)
Max-Planck-Institut Halbleiterlabor (Germany)
Gisela Hartner, Max-Planck-Institut für extraterrestrische Physik (Germany)
Danilo Mießner, Max-Planck-Institut für extraterrestrische Physik (Germany)
Max-Planck-Institut Halbleiterlabor (Germany)
Daniel Pietschner, Max-Planck-Institut für extraterrestrische Physik (Germany)
Max-Planck-Institut Halbleiterlabor (Germany)
Peter Predehl, Max-Planck-Institut für extraterrestrische Physik (Germany)
Jonas Reiffers, Max-Planck-Institut für extraterrestrische Physik (Germany)
Max-Planck-Institut Halbleiterlabor (Germany)
Lothar Strüder, Max-Planck-Institut für extraterrestrische Physik (Germany)
Max-Planck-Institut Halbleiterlabor (Germany)
Andreas von Kienlin, Max-Planck-Institut für extraterrestrische Physik (Germany)
Sabine Walther, Max-Planck-Institut für extraterrestrische Physik (Germany)
Max-Planck-Institut Halbleiterlabor (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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