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The relationship between pumped traps and signal loss in buried channel CCDs

Murray, Neil J.; Burt, David J.; Hall, David and Holland, Andrew D. (2013). The relationship between pumped traps and signal loss in buried channel CCDs. In: UV/Optical/IR Space Telescopes and Instruments: Innovative Technologies and Concepts VI, SPIE, article no. 8860 0H.

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DOI (Digital Object Identifier) Link: https://doi.org/10.1117/12.2024826
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Abstract

Pocket-pumping is an established technique for identifying the locations of charge trapping sites within the transport channels of CCDs. Various parameters of the pumping process can be manipulated to increase the efficiency, or allow characterisation of the trap sites effective during nominal operating modes. A CCD273 was irradiated in a triangular region by protons to a 10 MeV equivalent fluence of 1.2E9 p cm2, ensuring a suitably low trap density for ease of automated trap recognition. X-rays of 5,898 eV were incident on the CCD above the region irradiated with the triangle, such that events could be analysed having passed through an increasing length of irradiated silicon and hence number of trapping sites. Here we present the relationship between the number of traps identified by pocket pumping within the parallel transport channels of a CCD273 and the amount of signal that is deferred by the trapping process during readout.

Item Type: Conference or Workshop Item
Copyright Holders: 2013 Society of Photo-Optical Instrumentation Engineers (SPIE)
ISBN: 0-8194-9710-X, 978-0-8194-9710-9
ISSN: 0277-786X
Extra Information: UV/Optical/IR Space Telescopes and Instruments: Innovative Technologies and Concepts VI
Editors: Howard A. MacEwen, James B. Breckinridge
Proceedings of SPIE Vol.8860
Keywords: charge-coupled devices; signal attenuation; silicon; X-rays
Academic Unit/School: Faculty of Science, Technology, Engineering and Mathematics (STEM) > Physical Sciences
Faculty of Science, Technology, Engineering and Mathematics (STEM)
Research Group: Centre for Electronic Imaging (CEI)
Space
Item ID: 39015
Depositing User: David Hall
Date Deposited: 20 Nov 2013 08:36
Last Modified: 08 Dec 2018 05:51
URI: http://oro.open.ac.uk/id/eprint/39015
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