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6 July 2018 Studies of operation modes for the ATHENA WFI detectors
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Abstract
The Wide Field Imager (WFI) is one of two instruments for ESA’s Athena X-ray observatory. It will employ DEPFET (depleted p-channel field effect transistor) active pixel technology to provide unprecedented spectroscopic and imaging capabilities over a broad energy band from 0.2 keV to 15 keV, with a large field of view of 40′ × 40′ . Using prototype detectors of various sizes we have started first tests of window mode operation, where only a subset of the full sensor array is being read out, leading to a higher frame rate for this area. We also investigated the possibility of operation at room temperature for a basic functionality test when cooling is not possible, e.g. on ground after integration on the satellite.
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Annika Behrens, Robert Andritschke, Michael Bonholzer, Valentin Emberger, Günter Hauser, Norbert Meidinger, Johannes Müller-Seidlitz, and Wolfgang Treberspurg "Studies of operation modes for the ATHENA WFI detectors", Proc. SPIE 10699, Space Telescopes and Instrumentation 2018: Ultraviolet to Gamma Ray, 106994I (6 July 2018); https://doi.org/10.1117/12.2314182
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