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Proceedings Paper

Radiation testing of CCDs for space applications
Author(s): C. Baltay; A. Bauer; W. Emmet; J. Jerke; D. Rabinowitz; D. Silverman; A. Szymkowiak; G. Zevi Della Porta
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Paper Abstract

This article reports the results of radiation resistance tests of fully depleted p-channel Charge Coupled Devices (CCDs) developed at the Lawrence Berkeley National Laboratory for imaging applications in space. Several such devices were irradiated by 12 MeV protons at the tandem accelerator at the Wright Nuclear Structure Laboratory at Yale University by doses up to 8 x 1010 protons/cm2. The equivalent dose at an orbit near L2 for a six year mission in space was estimated to be an equivalent 7.3 x 108 12.5 MeV protons/cm2. The performance of the CCDs was measured both before and after irradiation. The charge transfer efficiency CTE was degraded from 0.999999 before irradiation to 0.999996 after the expected six year dose. The dark current, which was 3 electrons/pixel/hour before irradiation, is degraded to an equilibrium rate of 15 electrons/pixel/hour in orbit. We conclude that the performance of these devices is quite acceptable for high precision imaging in a space mission.

Paper Details

Date Published: 19 July 2010
PDF: 10 pages
Proc. SPIE 7742, High Energy, Optical, and Infrared Detectors for Astronomy IV, 77422G (19 July 2010); doi: 10.1117/12.856310
Show Author Affiliations
C. Baltay, Yale Univ. (United States)
A. Bauer, Yale Univ. (United States)
W. Emmet, Yale Univ. (United States)
J. Jerke, Yale Univ. (United States)
D. Rabinowitz, Yale Univ. (United States)
D. Silverman, Yale Univ. (United States)
A. Szymkowiak, Yale Univ. (United States)
G. Zevi Della Porta, Yale Univ. (United States)

Published in SPIE Proceedings Vol. 7742:
High Energy, Optical, and Infrared Detectors for Astronomy IV
Andrew D. Holland; David A. Dorn, Editor(s)

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