Frankfurt 2014 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 46: Poster
HK 46.70: Poster
Donnerstag, 20. März 2014, 16:00–18:00, HZ Poster
Layout of the Micro Vertex Detector for CBM* — •Tobias Tischler, Samir Amar-Youcef, Michael Deveaux, Michal Koziel, Christian Müntz, and Joachim Stroth for the CBM-MVD collaboration — Goethe Universität, Frankfurt
For the reconstruction of open charm hadrons with the CBM experiment, a Micro Vertex Detector (MVD) with an excellent resolution of the secondary decay vertex (< 70 µm along the beam axis) is required. To achieve this vertex resolution 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 further reduce the multiple scattering the MVD operates in moderate vacuum.
In this contribution, we will present the planned layout of the MVD, guided by constraints regarding the acceptance of CBM, space limitations as well as technical aspects of module production. The layout employs the actual geometry of the Monolithic Active Pixel Sensors to be used in the MVD, as well as advanced sensor support materials , heat sinks and further supporting structures. The resulting CAD layout was then converted to the corresponding Geant geometry and implemented into the CBM simulation package (CbmRoot). A dedicated software code was used to estimate a material budget in the case of a SIS−100 setup. The results will be presented and discussed.
*supported by HIC for FAIR, GSI , BMBF (05P12RFFC7), EU-FP7 HadronPhysics3