Bochum 2009 – wissenschaftliches Programm

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HK: Fachverband Hadronen und Kerne

HK 40: Accelerators and Instrumentation I

HK 40.8: Vortrag

Dienstag, 17. März 2009, 18:30–18:45, H-ZO 80

Concept and simulation of the CBM-Micro Vertex Detector* — •Christina Dritsa — GSI, Darmstadt, Germany — IKF, Frankfurt, Germany — IPHC, Strasbourg, France

The future CBM (Compressed Baryonic Matter) experiment aims to explore the properties of nuclear matter at high net baryonic densities. It will measure rare and penetrating probes such as open charm, which is produced close to the production threshold. The identification of open charmed particles is done by separating their displaced decay vertices from the event vertex. This approach calls for a performant micro vertex detector (MVD), which will consist of several layers of pixel sensors. Monolithic Active Pixel Sensors (MAPS) are currently considered to be the most promising sensor technology for the MVD as they provide an excellent single point resolution together with low material budget and appropriate radiation hardness and time resolution.

We will discuss the concept of the MVD. Hereafter, we will introduce the simulation tools used for the detector simulation. A focus will be laid on the digitizer for the MAPS. The simulated response of the MAPS will be compared with data obtained from beam tests at the CERN-SPS. *Supported by BMBF(06FY1731)