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Heidelberg 2015 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 30: Instrumentation 10

HK 30.1: Group Report

Tuesday, March 24, 2015, 17:00–17:30, M/HS1

Status of the CBM Micro Vertex Detector — •Michal Koziel for the CBM-MVD collaboration — Goethe-Universität

The fixed-target experiment CBM at FAIR will explore the phase diagram of strongly interacting matter in the regime of highest net baryon densities with numerous probes, among them open charm. For the reconstruction of open charm hadrons with the CBM experiment a Micro Vertex Detector (MVD) with an excellent spatial resolution of the secondary decay vertex is required. Hence, a material budget of a few 0.1% X0 is mandatory for the individual detector stations positioned downstream in close vicinity to the target. To reduce multiple scattering, the MVD operates in vacuum, which poses challenging requirements on both, the power dissipation of the sensors and the integration concept. Here one should mention the selection of high-performance materials providing the mechanical support and cooling for the 0.05 mm thin sensors, establishing the sensor quality assessment procedures as well as defining the sensor integration. In addition, a substantial progress with respect to sensor development will be reported, mainly to the studies on their radiation hardness. Also, the 2nd generation of the sensor control and read-out based on TRBv3 standard has been commissioned. In this contribution we will highlight several activities that have been successfully accomplished, which enable us to define the start version of the CBM MVD.***This work has been supported by BMBF (05P12RFFC7), GSI, HIC for FAIR, EU-FP7 HadronPhysics3.***

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