Mainz 2022 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 4: Instrumentation I
HK 4.5: Vortrag
Montag, 28. März 2022, 15:15–15:30, HK-H3
Performances of the MIMOSIS-1 CMOS Monolithic Active Pixel Sensor* — •Hasan Darwish for the CBM-MVD collaboration — GSI Darmstadt — Goethe Universität Frankfurt am Main — Université de Strasbourg, CNRS, IPHC UMR 7178, Strasbourg
The CMOS Monolithic Active Pixel Sensor MIMOSIS will be used in the Micro Vertex Detector (MVD) of the CBM experiment at FAIR in Darmstadt. The 50 µm thin sensor will feature 1024× 504 pixels with a pitch of 27 × 30 µ m2, a peak rate capability of 80 MHz/cm2 and combine a time resolution of 5 µs with a spatial resolution of ∼ 5 µm.
The full size prototype MIMOSIS-1, the second MIMOSIS prototype along its three-prototype development process, was tested with electron and pion beams in several beam tests at DESY and CERN. Sensor performances including detection efficiency, spatial resolution, fake hit rate and pixel cluster multiplicity were measured for a total of 12 combinations of three different kinds of active volumes and four flavours of pixels. Moreover, the tolerance to radiation doses of up to 5 MRad and 3× 1014 neq/cm2 was evaluated.
The technology of the sensor is introduced and first results of the beam tests are shown.
*This work has been supported by bmbf (05P19RFFC1), gsi, cremlinplus, hfhf, and tangerine.