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

TL;DR

This study evaluates a trapezoid-filter-based data acquisition system with high-purity germanium detectors, demonstrating reliable performance at event rates up to 35 kHz and high energy resolution.

Contribution

It provides empirical analysis of system performance at high activity levels, identifying optimal settings for high-rate measurements.

Findings

Achieves reliable measurements up to 35 kHz event rate

Maintains 0.3% energy resolution at 2754 keV

Characterizes efficiency, resolution, and dead time as functions of activity

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.