Speaker
Description
The CMOS Sensor MIMOSIS is being developed to equip the Micro Vertex
Detector (MVD) of the CBM experiment at FAIR in Darmstadt, Germany. It
will feature 1024 × 504 pixels and combine a time resolution of 5 µs
with a spatial resolution of ∼ 5 µm. Moreover, it will have to handle a
peak rate of 80 MHz/cm² and radiation doses of 5 MRad and up to 10e14
neq/cm² per year. It is being developed within a joined R&D program
of IPHC Strasbourg, Goethe University Frankfurt and GSI.
The first full size sensor prototype MIMOSIS-1 was developed and tested
intensely. It hosts conventional DC-coupled pixels and innovative
AC-coupled pixels suited to fully deplete the sensing element with
voltages of up to 20V. The detection performances of the device, its
immunity to the above-mentioned radiation doses and heavy ion impacts
was studied in the laboratory and in a series of beam tests at DESY,
CERN, and GSI. The contribution will summarize the design considerations
of MIMOSIS and discuss the results obtained.
