Darmstadt 2016 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 7: Instrumentation I

HK 7.1: Gruppenbericht

Montag, 14. März 2016, 14:00–14:30, S1/01 A2

Vacuum-Compatible, Ultra-Low Material Budget MVD for the CBM Experiment. — •Michal KOZIEL for the CBM-MVD collaboration — Goethe-Universität Frankfurt

The Compressed Baryonic Matter Experiment (CBM) is one of the core experiments of the future FAIR facility. It will explore the phase diagram of strongly interacting matter in the regime of high net baryon densities with numerous probes, among them open charm. The Micro Vertex Detector (MVD) will contribute to the secondary vertex determination on a 10 µm scale, background rejection in dielectron spectroscopy and reconstruction of weak decays. The detector comprises up to four stations placed next to the target and inside vacuum. The stations are populated with 50 µm thin, highly-granular Monolithic Active Pixel Sensors, featuring a spatial resolution of <5 µm, a readout speed of few 10 µs/frame, a radiation tolerance of >10¹³ n_eq/cm² and 3 Mrad. This contribution focuses on the next and the last step before a final detector production, that is the precursor of the third CBM-MVD station hosting 15 CMOS sensors. We will report on the status of the project and the first results of the MVD precursor characterization, with a emphasis on lessons learned for the assembly phase.