Mr. Daniel Krähenbühl Profile

Daniel Krähenbühl

at Micro-Cameras and Space Exploration S.A.

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Proceedings Article | 11 June 2021 Open Access

Radiation tests on the HAS2 image sensor with colour filter array for the JUICE Monitoring Cameras

Pawel Adamiec, Nikhil Banerji, Juan Barbero, Stephane Beauvivre, Enrique Cordero, Monica Rodriguez Cortina, Morten Andreas Geday, Daniel Krähenbühl, Alejandro Lopez Moya, Ruth Ziethe

Proceedings Volume 11852, 118525E (2021) https://doi.org/10.1117/12.2599949

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A radiation hard image sensor HAS2 was chosen for the Juice Monitoring Camera, an important instrument to monitor the status of the JUpiter ICy moons Explorer (JUICE) spacecraft and to take wide-angle images of the Jovian system. To improve the perception, a radiation-hardened, non-organic color filter array (CFA) was deposited on the sensor silicon, with four colors: red, green, blue, and yellow. In this paper we present the results of the radiation tests on these customized image sensors. First, results on the total ionizing dose (TID) test up to 57 krad confirm that both the image sensor and the deposited CFA are resistant to gamma radiation in the measured range. Also, single event effects (SEE) measurements up to LET of 100 MeV·cm2/mg were performed. Three types of events were considered: single event latch-up (SEL), single event upset (SEU), and finally single event functional interruption (SEFI). Since only one SEL was registered on one of the samples at 62.5 MeV·cm2/mg there was no further analysis on this event. Based on the experimental results, the cross sections have been calculated for SEU and SEFI. These results were used as input for the SEE analysis with the CRÈME96 software. The rates of about 10^-4 and 10^-5 events/device/day were obtained for SEU and SEFI for quiet environment, respectively.

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