Heidelberg 2015 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 21: Instrumentation 7

HK 21.4: Vortrag

Dienstag, 24. März 2015, 15:30–15:45, M/HS1

Radiation hardness of CMOS Monolithic Active Pixel Sensors manufactured in a 0.18 µ m CMOS process* — •Benjamin Linnik for the CBM-MVD collaboration — Goethe-Universität Frankfurt

CMOS Monolithic Active Pixels Sensors (MAPS) are considered as the technology of choice for various vertex detectors in particle and heavy-ion physics including the STAR HFT, the upgrade of the ALICE ITS, the future ILC detectors and the CBM experiment at FAIR.
To match the requirements of those detectors, their hardness to radiation is being improved, among others in a joined research activity of the Goethe University Frankfurt and the IPHC Strasbourg.
It was assumed that combining an improved high resistivity (1−8 kΩ cm) sensitive medium with the features of a 0.18 µ m CMOS process, is suited to reach substantial improvements in terms of radiation hardness as compared to earlier sensor designs. This strategy was tested with a novel generation of sensor prototypes named MIMOSA-32 and MIMOSA-34. We show results on the radiation hardness of those sensors and discuss its impact on the design of future vertex detectors.
*This work has been supported by BMBF (05P12RFFC7), GSI, HGS-HIRe and HIC for FAIR.