Mainz 2022 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 15: Instrumentation V

HK 15.2: Vortrag

Montag, 28. März 2022, 16:30–16:45, HK-H4

NuDAQ - A flexible and extendable data acquisition system for above-small size nuclear physics setups — •Michael Weinert, Christoph Fransen, Andreas Harter, and Andreas Zilges — University of Cologne, Institute for Nuclear Physics, 50937 Cologne, Germany

The increasing number of channels in modern day nuclear physics experiments led to a redesign of the digital data acquisition system (DAQ) and the overall approach to setting up experiments at the Institute for Nuclear Physics in Cologne. While a high channel count and low dead times are welcomed features of modern digital acquisition systems, the highest achievable spectral resolution is mandatory for experiments that depend on the analysis of e.g. γ-ray energies well below 1 keV precision or direct lifetime measurements in the ps regime. A new DAQ system was built around the commercially available V1730 and V1782 digitizer modules by CAEN SpA, which are used to process signals from semiconductor detectors as well as photomultiplier-based detectors. A centralized server station, connected to each setup via fibre channel, builds the heart of the DAQ system that does not have to be moved between experiments, is accessible even when beam is on target, and benefits from an independent power supply and a fast uplink. An online-coincidence filter module has been implemented on the CAEN V2495 FPGA module which also allows to process veto signals per detector. This contribution presents the new system and improved workflow and display the high performance available for local experiments. Supported by the BMBF (05P21PKEN9).