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Modelling Gaia CCD pixels with Silvaco 3D engineering software

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arxiv 1009.2431 v1 pith:Y5KKWTNM submitted 2010-09-13 astro-ph.IM astro-ph.GA

G. M. Seabroke (1 , 2) , T. Prod'homme (3) , G. Hopkinson (4) , D. Burt (5) , M. Robbins (5) , A. Holland (1) ((1) Planetary & Space Sciences Research Institute , The Open University
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Milton Keynes UK (2) Mullard Space Science Laboratory University College London (3) Leiden Observatory Leiden University The Netherlands (4) Surrey Satellite Technology Ltd. Sevenoaks (5) e2v technologies Chelmsford UK)
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keywords gaiachargedamageengineeringpacketpixelradiationsilvaco
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Gaia will only achieve its unprecedented measurement accuracy requirements with detailed calibration and correction for radiation damage. We present our Silvaco 3D engineering software model of the Gaia CCD pixel and two of its applications for Gaia: (1) physically interpreting supplementary buried channel (SBC) capacity measurements (pocket-pumping and first pixel response) in terms of e2v manufacturing doping alignment tolerances; and (2) deriving electron densities within a charge packet as a function of the number of constituent electrons and 3D position within the charge packet as input to microscopic models being developed to simulate radiation damage.

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