Waveform Timing Performance of a 5 GS/s Fast Pulse Sampling Module with DRS4

TL;DR

This paper improves the timing accuracy of a 5 GS/s sampling module using DRS4 by calibration, achieving below 10 ps RMS, and demonstrates its performance comparable to a 10 GS/s oscilloscope in particle detection setups.

Contribution

It introduces a calibration strategy for non-uniform sampling intervals in a 5 GS/s DRS4-based module, enhancing waveform timing precision.

Findings

Timing performance improved to below 10 ps RMS.

Module's timing performance is comparable to a 10 GS/s oscilloscope.

Calibration effectively addresses sampling interval non-uniformity.

Abstract

We first clarify timing issues of non-uniform sampling intervals regarding a 5 GS/s fast pulse sampling module with DRS4. Calibration strategy is proposed, and as a result, the waveform timing performance is improved to be below 10 ps RMS. We then further evaluate waveform timing performance of the module by comparing with a 10 GS/s oscilloscope in a setup with plastic scintillators and fast PMTs. Different waveform timing algorithms are employed for analysis, and the module shows comparable timing performance with that of the oscilloscope.