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Gießen 2024 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 4: Instrumentation II

HK 4.2: Talk

Monday, March 11, 2024, 17:15–17:30, HBR 19: C 2

Studies of detector data rates and hit multiplicity for the Silicon Tracking Systems of the CBM experiment — •Mehulkumar Shiroya for the CBM collaboration — GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, Germany

The Silicon Tracking System (STS) is the main tracking device of the Compressed Baryonic Matter (CBM) Experiment, a fixed target experiment at the SIS100 accelerator, under construction at the FAIR Facility Darmstadt. The STS is designed to measure up to 700 charged particles produced in nucleus-nucleus collisions up to an interaction rate of 10 MHz.It consists of 876 double-sided micro-strips silicon sensors, read out by two Front-End Boards (FEBs) with 8 ASICs each, arranged in 8 tracking stations. To meet the high interaction rate demand, the CBM experiments operate with free streaming electronics. A realistic estimate of the data rate expected in the detector is therefore of crucial importance to drive the decisions on the read-out system design and network data transfer components procurement. Simulation studies have been performed including different experimental scenarios, a realistic detector geometrical setup, which includes all the known passive materials, as well as realistic modelling of the detector response and front-end electronics. The impact of the detector noise and additional signals of delta electrons originating from the target has been evaluated. Detector data rate and hit multiplicity are studied in real data and compared to simulations, to benchmark and validate the estimates for the highest rates expected at SIS100.

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