Bochum 2018 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 14: Instrumentation VI

HK 14.4: Talk

Monday, February 26, 2018, 17:45–18:00, HZO 90

News on Rad Hardness studies for the CBM MVD — •Tobias Bus for the CBM-MVD collaboration — Goethe Universität

The Micro Vertex Detector of the future CBM-experiment will rely on CMOS Monolithic Active Pixel Sensors (MAPS) provided by IPHC Strasbourg (MIMOSA-series).

To adapt the radiation tolerance of the sensors to the demanding requirements of this experiment, prototypes featuring AC-coupled sensors have been produced. This feature allows to apply a depletion voltage of up to 40 V to the collection diodes of the sensor. A prototype named PIPPER-2 was exposed to radiation doses of up to 5 · 10¹⁴ n_eq/cm² and tested hereafter. The results will be shown and the advantages and limits of the approach will be discussed.
This work has been supported by BMBF (05P15RFFC1), GSI and HIC for FAIR.