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Proceedings Paper

ESA's CCD test bench for the Euclid visible channel
Author(s): Peter Verhoeve; Nathalie Boudin; Udo Telljohann; Tim Oosterbroek; Didier Martin; Ludovic Duvet; Thierry Beaufort; Bart Butler; Isabel Escudero-Sanz; Hans Smit; Fritz de Wit
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Paper Abstract

The visual imaging instrument VIS on board Euclid baselines 36 newly designed CCD273-84 devices from e2v. While these new devices have a 4kx4k format with four readout nodes, the Euclid Imaging Consortium (EIC) has performed extensive test campaigns on both irradiated and un-irradiated devices of the 4kx1k Euclid precursor variant CCD204-22. In support of the CCD development and characterization, and to enable an independent assessment of the Euclid CCDs (the procurement of which is ESA’s responsibility), ESA/ESTEC has built a test bench. This test bench allows for a flexible operation and readout of the CCDs, originally for CCD204 and shortly also for CCD273-84. It provides the basic tools for noise and gain calibration, and CTI, QE, MTF and PRNU measurements. In addition, the bench provides scanning spot illumination with a spot size well below the pixel size, for measurement of the intra-pixel response of the CCDs before and after radiation damage. Such measurements are of great importance for the characterization and modeling of the VIS instrument’s PSF, in particular to enable the prediction of the evolution of the PSF shape under the influence of the L2 radiation environment during the mission. This set-up will also allow for simulation of typical Euclid sky images in the lab. The capabilities and validation of this bench at ESA are described in this paper.

Paper Details

Date Published: 25 September 2012
PDF: 12 pages
Proc. SPIE 8453, High Energy, Optical, and Infrared Detectors for Astronomy V, 845322 (25 September 2012); doi: 10.1117/12.926016
Show Author Affiliations
Peter Verhoeve, European Space Research and Technology Ctr. (Netherlands)
Nathalie Boudin, European Space Research and Technology Ctr. (Netherlands)
Cosine Research BV (Netherlands)
Udo Telljohann, European Space Research and Technology Ctr. (Netherlands)
Tim Oosterbroek, European Space Research and Technology Ctr. (Netherlands)
Didier Martin, European Space Research and Technology Ctr. (Netherlands)
Ludovic Duvet, European Space Research and Technology Ctr. (Netherlands)
Thierry Beaufort, European Space Research and Technology Ctr. (Netherlands)
Bart Butler, European Space Research and Technology Ctr. (Netherlands)
Isabel Escudero-Sanz, European Space Research and Technology Ctr. (Netherlands)
Hans Smit, European Space Research and Technology Ctr. (Netherlands)
Fritz de Wit, European Space Research and Technology Ctr. (Netherlands)


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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