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Proceedings Paper

Charge transfer efficiency in a p-channel CCD irradiated cryogenically and the impact of room temperature annealing
Author(s): J. P. D. Gow; N. J. Murray; D. Wood; D. Burt; D. J. Hall; B. Dryer; A. D. Holland
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Paper Abstract

It is important to understand the impact of the space radiation environment on detector performance, thereby ensuring that the optimal operating conditions are selected for use in flight. The best way to achieve this is by irradiating the device using appropriate mission operating conditions, i.e. holding the device at mission operating temperature with the device powered and clocking. This paper describes the Charge Transfer Efficiency (CTE) measurements made using an e2v technologies p-channel CCD204 irradiated using protons to the 10 MeV equivalent fluence of 1.24×109 at 153 K. The device was held at 153 K for a period of 7 days after the irradiation before being allowed up to room temperature where it was held at rest, i.e. unbiased, for twenty six hours to anneal before being cooled back to 153 K for further testing, this was followed by a further one week and three weeks of room temperature annealing each separated by further testing. A comparison to results from a previous room temperature irradiation of an n-channel CCD204 is made using assumptions of a factor of two worse CTE when irradiated under cryogenic conditions which indicate that p-channel CCDs offer improved tolerance to radiation damage when irradiated under cryogenic conditions.

Paper Details

Date Published: 1 August 2016
PDF: 10 pages
Proc. SPIE 9915, High Energy, Optical, and Infrared Detectors for Astronomy VII, 99150L (1 August 2016);
Show Author Affiliations
J. P. D. Gow, The Open Univ. (United Kingdom)
N. J. Murray, The Open Univ. (United Kingdom)
Dynamic Imaging Analytics Ltd. (United Kingdom)
D. Wood, The Open Univ. (United Kingdom)
D. Burt, e2v technologies plc (United Kingdom)
D. J. Hall, The Open Univ. (United Kingdom)
B. Dryer, The Open Univ. (United Kingdom)
A. D. Holland, The Open Univ. (United Kingdom)

Published in SPIE Proceedings Vol. 9915:
High Energy, Optical, and Infrared Detectors for Astronomy VII
Andrew D. Holland; James Beletic, Editor(s)

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