Mainz 2022 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 38: Instrumentation X

HK 38.4: Talk

Wednesday, March 30, 2022, 15:00–15:15, HK-H4

Deployment of digital fast-timing method for picosecond precision lifetime measurements using the NuDAQ system at IKP Cologne — •Andreas Harter, Jean-Marc Régis, Michael Weinert, Lukas Knafla, and Jan Jolie — University of Cologne, Institute for Nuclear Physics, 50937 Cologne, Germany

The comissioning of the NuDAQ digital data acquisition system built at the Institute for Nuclear Physics in Cologne is presented. Special regard is set on the ability of high-precision timing of the incoming detector pulses using a digital timing algorithm. Usually, analogue constant-fraction-discriminators (CFDs) and time-to-amplitude converters (TACs) are used to provide a timing signal with precision of around 1 ps or even better (dependent on the DAQ). However, the complexity of an analogue fast-timing electronics setup increases rapidly with the number of detectors. The digital CFD integrated in the V1730 digitizer modules with a sampling rate of 500 MHz uses a digital algorithm to determine a time stamp of an incoming signal with a precision of 2 ps [1]. Our results using the γ-γ timing technique impressively show that this easy-to-use digitizer using the sophisticated timing algorithm is competitive to the conventional analogue timing technique.

[1] CAEN SpA, https://www.caen.it/products/v1730/