München 2019 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 30: Instrumentation VI

HK 30.2: Gruppenbericht

Dienstag, 19. März 2019, 17:00–17:30, HS 11

Towards the CBM-MVD: The Group Report — •Philipp Klaus 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 µ m scale, background rejection in di-electron spectroscopy and reconstruction of weak decays of multi-strange baryons. The detector comprises four stations placed next to the target in vacuum, allowing for two distinct station arrangements. The stations are populated with 50 µ m thin, highly-granular customized Monolithic Active Pixel Sensors (called “MIMOSIS”), featuring a spatial precision in the order of <5 µ m, a readout speed of less than 10 µ s/frame, a radiation tolerance of >10¹³ n_eq/cm² and 3 Mrad. This contribution will summarize the status of activities towards constructing the MVD, that involve in particular CMOS sensor development together with IPHC Strasbourg, characterization and read-out, as well as detector integration, cooling and control aspects.

This work has been supported by BMBF (05P15RFFC1), GSI and HIC for FAIR.