Simulation study of STS-XYTER front-end electronics in overload situations for the silicon tracking system in the CBM experiment

In high-rate experiments, as the CBM Experiment at FAIR, a situation can occur in which the data rate temporarily exceeds the available bandwidth. With self-triggered front end electronics such overload situations would lead, without further measures, to uncontrolled data losses and potentially a large number of incomplete events. Mechanisms needed to control data losses and to ensure the collection of complete events can be understood via simulations performed with the hardware description language SystemC. Results from simulations of a simplified front-end electronics for the CBM Silicon Tracking System, based on the STS-XYTER ASIC, are presented. Performed simulations give first insight in the behavior of data flow and data losses in the DAQ system of the CBM experiment. Options and solutions for the data throttling mechanisms at beam conditions required by the CBM experiment are discussed.