Mainz 2012 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 4: Instrumentation

HK 4.1: Group Report

Monday, March 19, 2012, 14:00–14:30, P 2

Development of the CBM Silicon Tracking System — •Johann M. Heuser — GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt

The Silicon Tracking System (STS) is the central detector of the CBM experiment. Its task is the standalone trajectory reconstruction of the high multiplicities of charged particles originating from high-rate beam-target interactions, including momentum determination in a magnetic dipole field. The detector system shall be operational from the start of the CBM physics program at SIS-100, and later at SIS-300. The development of the STS is challenging. The silicon microstrip detectors must be radiation hard and operated at low temperature. Fast self-triggering front-end electronics is needed to send time-stamped detector data to an on-line event processor. High-density electronics boards are required to handle the large number of readout channels. A low-mass construction must be achieved avoiding the front-end electronics, cooling and cabling infrastructure in the aperture. In the presentation I will outline the conceptional layout of the STS, elaborate on the mechanical constraints, describe the expected radiation environment, and summarize the implications for the development of the detector components and their integration into the tracking system. Progress with the STS project will be shown, including the development of silicon microstrip detectors, front-end electronics and mechanical designs, as well as performance studies and in-beam tests of prototypes. Supported by EU-FP7 HadronPhysics3.