Heidelberg 2022 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 13: Semiconductor Detectors:Radiation Hardness, new Materials and Concepts

T 13.7: Vortrag

Montag, 21. März 2022, 17:45–18:00, T-H26

Total Ionizing Dose effects on CMOS Image Sensor of the ULTRASAT space mission — •Vlad Dumitru Berlea for the ULTRASAT collaboration — DESY Zeuthen Platanenallee 6, 15738

ULTRASAT (ULtraviolet TRansient Astronomy SATellite) is a wide-angle space telescope that will perform deep time-resolved surveys in the near ultraviolet spectrum. ULTRASAT is led by the Weizmann Institute of Science (WIS) in Israel and the Israel Space Agency (ISA) and is planned for launch in 2024. The telescope implements a backside-illuminated, stitched pixel detector. The pixel has 4T architecture with a pitch of 9.5 μm and is produced in 180 nm process by Tower Semiconductor.

As part of the space qualification for the sensors, radiation tests are to be performed on both test sensors provided by Tower and the final flight design of the sensor. One of the main contributions to sensor degradation due to radiation for the ULTRASAT mission is Total Ionizing Dose (TID). TID measurements on the test sensors have been performed with Co-60 gamma source at Helmholz Zentrum Berlin (HZB) and CC-60 facilities at CERN, and preliminary results are presented in this talk.