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Predicting the effect of radiation damage on dark current in a space-qualified high performance CMOS image sensor

Crews, C.; Soman, M. R.; Lofthouse-Smith, D. D.; Allanwood, E. A. H.; Stefanov, K. D.; Leese, M.; Turner, P. and Holland, A. (2019). Predicting the effect of radiation damage on dark current in a space-qualified high performance CMOS image sensor. In: Journal of Instrumentation, IOP Publishing Ltd and Sissa Medialab, 14(11) C11008-C11008.

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The CIS115 is a Teledyne-e2v CMOS image sensor with 1504 × 2000 pixels of 7 μm pitch. It has a high optical quantum efficiency owing to a multi-layer anti-reflective coating and its backside illuminated construction, and low dark current due to its pinned photodiode 4T pixel architecture. The sensor operates in rolling shutter mode with a frame rate of up to 7.5 fps (if using the whole array), and has a low readout noise of ~5 electrons rms. The CIS115 has been selected for use within the JANUS instrument, which is a high resolution camera due to launch on board ESA's JUpiter ICy moons Explorer (JUICE) spacecraft in 2022. After an interplanetary transit time of over 7 years, JUICE will spend 3.5 years touring the Jovian system, studying three of the Galilean moons in particular: Ganymede, Callisto and Europa. During this latter part of the mission, the spacecraft and hence the CIS115 sensor will be subjected to the significant levels of trapped radiation surrounding Jupiter. Gamma and proton irradiation campaigns have therefore been undertaken in order to evaluate both ionising and non-ionising dose effects on the CIS115's dark current performance. Characterisations were carried out at expected mission operating temperatures (−35 ± 10oC) both prior to and post-irradiation. Models of the resulting degradation in dark current behaviour will be combined with expected doses during the JUICE mission in order to predict the performance of the CIS115 at the mission end-of-life

Item Type: Conference or Workshop Item
Copyright Holders: 2019 IOP Publishing Ltd, 2019 Sissa Medialab
ISSN: 1748-0221
Project Funding Details:
Funded Project NameProject IDFunding Body
JUICE phases B2/C/DST/M007979/1UK Space Agency (UKSA)
Keywords: Photon detectors for UV, visible and IR photons (solid-state) (PIN diodes, APDs, Si-PMTs, G-APDs, CCDs, EBCCDs, EMCCDs, CMOS imagers, etc); Radiation damage to detectormaterials (solid state); Radiation-hard detectors; Space instrumentation
Academic Unit/School: Faculty of Science, Technology, Engineering and Mathematics (STEM) > Physical Sciences
Faculty of Science, Technology, Engineering and Mathematics (STEM)
Learner and Discovery Services (LDS) > Development & Production
Learner and Discovery Services (LDS)
Research Group: Centre for Electronic Imaging (CEI)
Item ID: 68035
Depositing User: Chiaki Crews
Date Deposited: 08 Nov 2019 16:02
Last Modified: 09 Nov 2019 10:35
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