Two new DarkSide-20k instrumentation papers
The DarkSide-20k collaboration has released two papers documenting major pieces of the detector’s instrumentation. Both have since been published.
The data acquisition system. The DarkSide-20k Data Acquisition System (JINST 21, P09017) presents the DAQ that will read out the experiment’s 2720 SiPM-based channels. The system digitizes waveforms continuously, without a hardware trigger, and processes them online to reduce the data volume for long-term storage. A full “Quadrant” — one quarter of the final system — has been assembled and validated at TRIUMF.
The veto photosensors. Construction and characterisation of the DarkSide-20k veto silicon photo-multiplier tiles (Eur. Phys. J. C 86, 1089) describes the completed production and testing of the “vTiles”, arrays of 24 SiPMs that instrument the Inner Veto. Each tile was tested at room and cryogenic temperature; the final production yield exceeded 87%, above the 80% requirement, providing the 1920 tiles needed for 120 veto photodetector units plus spares.
Read more about DarkSide-20k .