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29 September 2004 Performance of the reflection-grating spectrometer CCD detectors onboard XMM-Newton
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Abstract
The ESA mission XMM-Newton was launched in 1999. Two of the three X-ray telescopes include reflection grating spectrometers (RGS). These spectrometers consist of a set of reflection gratings and an array of 9 back-illuminated CCDs, optimized for the soft energy response (0.35 - 2 keV). These CCDs can be passively cooled between -80 and -120°C. After a short description of the instrument we compare the performance of these CCD detectors with the pre-flight expectations and discuss the effect of some design choices on the in-flight performance. We concentrate on the effects of radiation damage due to cosmic rays and coronal mass ejections of the Sun, including flickering pixels and the effects of cooling the detector to -110°C. We also address the stability of the detector response including the assessment of possible contamination of these cooled detectors.
© (2004) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Jan Willem den Herder, Cor P. de Vries, Andy P. Rasmussen, Carlos Gabriel, Jelle S. Kaastra, Steven M. Kahn, Piet A. J. de Korte, Frits B. S. Paerels, John R. Peterson, and Andy Pollock "Performance of the reflection-grating spectrometer CCD detectors onboard XMM-Newton", Proc. SPIE 5501, High-Energy Detectors in Astronomy, (29 September 2004); https://doi.org/10.1117/12.549768
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