Behavior of a trapezoid-based data acquisition system up to 100 kHz and beyond

Abstract In this work, we investigated the ability of a high-purity germanium detector connected to a trapezoid-filter-based data acquisition system to reliably record signals in spite of high sample activities. By activating multiple Na 2 CO 3 samples with different Na content, we were able to deduce efficiency, resolution and dead time of the system used as a function of the sample activity. Based on the results, we were able to find a setting which allows measurements of event rates up to 35 kHz per readout channel with an energy resolution of 0.3% at the 2754 keV 24 Na line.