Pn-CCDs for the XMM satellite mission

Details Pn-CCDs for the XMM satellite mission Pn-CCDs for the XMM satellite mission

Nov 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990spie.1344..404b&link_type=abstract

IN: EUV, X-ray, and Gamma-ray instrumentation for astronomy; Proceedings of the Meeting, San Diego, CA, July 11-13, 1990 (A92-20

Astronomy and Astrophysics

Astronomy

1

Charge Coupled Devices, Imaging Spectrometers, Satellite Imagery, Spaceborne Astronomy, X Ray Spectroscopy, Aerospace Sciences, Charge Transfer, European Space Agency, X Ray Telescopes

Scientific paper

Recent results on the on-chip electronics, transfer properties, and radiation entrance window of pn-CCDs are presented. With recently fabricated devices, an improved charge transfer efficiency per pixel of 0.9995 and an energy resolution of the CCD output stage of 5 e(-) rms have been measured. This performance is achieved without a degradation of other characteristics of the devices, such as an X-ray efficiency of 90 percent at 10 keV, more than a factor of 1000 better time resolution in the full frame mode in comparison with all other CCD concepts, and a one-dimensional spatial resolution of 24 microsec in the timing mode. The use of pn-junctions instead of MOS structures makes the devices intrinsically radiation resistant.

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