Bonn 2010 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 21: Instrumentierung III

HK 21.5: Talk

Tuesday, March 16, 2010, 15:15–15:30, HG VIII

In-beam performance of the MAPS demonstrator* — •Samir Amar-Youcef, Norbert Bialas, Michael Deveaux, Horst Düring, Ingo Fröhlich, Christian Müntz, Jan Michel, Christoph Schrader, Selim Seddiki, Joachim Stroth, Tobias Tischler, and Bernhard Wiedemann — Institut für Kernphysik, Goethe-Universität Frankfurt am Main

CMOS sensors technology is the most promising candidate for the microvertex detector of CBM experiment at GSI. Due to the optimum compromise between an excellent spatial resolution, low material budget, adequate radiation tolerance and readout speed, they are more suited than any other technology for the reconstruction of the decay vertex (secondary vertex) of e.g. open-charm mesons, providing a secondary vertex resolution of better than 70 microns along the beam axis. To demonstrate the feasibility of such a detector based on CMOS sensors, provided by IPHC Strasbourg, a so called MVD demonstrator was developed, which comprises all functional components to be used in a heavy ion collision experiment. A concluding beamtest at CERN SPS with a reference system, providing tracking and triggering, was accomplished. Detector setup and results of the beam time will be presented.

*supported by BMBF (06FY173I, 06FY9099I), GSI F&E and H-QM Helmholtz Research School (Frankfurt)