Münster 2017 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 9: HK+T Joint Session II: Silicon Strip Detectors

HK 9.5: Vortrag

Montag, 27. März 2017, 18:00–18:15, F 234

Hit position error estimation for the CBM Silicon Tracking System — •Hanna Malygina1,2,3, Friese Volker3, and Maksym Zyzak3 for the CBM collaboration — 1Goethe Universität Frankfurt — 2KINR, Kyiv, Ukraine — 3GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt

The Compressed Baryonic Matter experiment (CBM) at FAIR is a heavy-ion experiment that will investigate dense QCD matter by measuring nuclear collisions in the beam energy range 2−45 GeV/nucleon. Its main features are a high track-density environment at extreme interaction rates of up to 10 MHz. As the central detector component, the Silicon Tracking System (STS) is based on double-sided micro-strip sensors. Accurate detector modeling in simulations is crucial to assess the physics performance of the device and to arrive at a proper design choice.

The response of the silicon double-sided strip detector is included in the STS digitizer which simulates a complete chain of physical processes caused by charged particles traversing the detector, from charge creation in silicon to a digital output signal. Using the current implementation, one can test the influence of each physical processes on hit reconstruction separately. We have developed a new unbiased cluster position finding algorithm and a hit error estimation method for it. The estimated errors were verified using the hit pull and track χ2 distributions.

Supported by HGS-HIRe.

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