| Issue |
EPJ Web Conf.
Volume 337, 2025
27th International Conference on Computing in High Energy and Nuclear Physics (CHEP 2024)
|
|
|---|---|---|
| Article Number | 01226 | |
| Number of page(s) | 9 | |
| DOI | https://doi.org/10.1051/epjconf/202533701226 | |
| Published online | 07 October 2025 | |
https://doi.org/10.1051/epjconf/202533701226
Overview of the data acquisition system architecture for the DarkSide-20k experiment
1 Physics Department, Sapienza Università di Roma, Roma 00185, Italy
2 INFN Sezione di Roma, Roma 00185, Italy
* e-mail: maria.adriana.sabia@roma1.infn.it
Published online: 7 October 2025
The DarkSide-20k (DS-20k) detector is designed to directly search for dark matter by detecting weakly interacting massive particles (WIMPs) scattering off nuclei in a 20 tonnes target of low radioactivity Argon from underground sources, in a dual-phase time projection chamber (TPC). The scintillation light produced by these interactions is recorded by custom silicon photomultiplier (SiPMs) assemblies comprising the detector’s 2720 readout channels. The data acquisition system (DAQ) for the DS-20k experiment operates in a triggerless mode, handling the estimated 3 GB/s flow of digitized data from MC simulation from the entire detector, dominated by the TPC. Signals are digitized by 48 commercial VX2745 CAEN 16-bit, 125 MS/s, high channel density waveform digitizers. This digitized data is then transferred to 24 Front-End Processor (FEP) machines for an initial data reduction stage. Subsequently, the processed data is sent to a separate set of Time Slice Processor (TSP) computers, where it is assembled into fixed-length time series for further analysis and storage for offline processing.
© The Authors, published by EDP Sciences, 2025
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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