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Modelling radiation damage to ESA's Gaia satellite CCDs

Seabroke, G; Holland, A; Cropper, M; (2008) Modelling radiation damage to ESA's Gaia satellite CCDs. In: Dorn, DA and Holland, AD, (eds.) Proceedings of the High Energy, Optical, and Infrared Detectors for Astronomy III. (pp. 70211P-1-70211P-12). SPIE Green open access

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Abstract

The Gaia satellite is a high-precision astrometry, photometry and spectroscopic ESA cornerstone mission, currently scheduled for launch in late 2011. Its primary science drivers are the composition, formation and evolution of the Galaxy. Gaia will not achieve its scientific requirements without detailed calibration and correction for radiation damage. Microscopic models of Gaia's CCDs are being developed to simulate the effect of radiation damage, charge trapping, which causes charge transfer inefficiency. The key to calculating the probability of a photoelectron being captured by a trap is the 3D electron density within each CCD pixel. However, this has not been physically modelled for Gaia CCD pixels. In this paper, the first of a series, we motivate the need for such specialised 3D device modelling and outline how its future results will fit into Gaia's overall radiation calibration strategy.

Type: Proceedings paper
Title: Modelling radiation damage to ESA's Gaia satellite CCDs
Event: High Energy, Optical, and Infrared Detectors for Astronomy III
Location: Marseille, France
Dates: 23rd-28th June 2018
ISBN-13: 978-0-8194-7231-1
Open access status: An open access version is available from UCL Discovery
DOI: 10.1117/12.790968
Publisher version: https://doi.org/10.1117/12.790968
Language: English
Additional information: This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: Astrometry, Gaia, Focal plane, CCDs
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Space and Climate Physics
URI: https://discovery.ucl.ac.uk/id/eprint/1302738
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