Speaker
Description
DarkSide-20k is a direct dark matter detection experiment employing a dual-phase liquid argon time projection chamber (TPC) to search for rare dark matter interactions. DarkSide-20k is instrumented with silicon photomultiplier (SiPM) array photon detectors, termed Photo-Detector Units (PDUs). This talk focuses on installation metrology and QA/QC, inheriting from methods developed during the neutron veto PDU production.
With veto PDU production complete, focus has shifted to veto PDU transport to, and installation at, LNGS in Italy. Installation on the optical planes viewing the TPC requires custom handling equipment and careful procedures to avoid mechanical damage. For this reason, comprehensive pre- and post-installation testing is essential to evaluate the PDU integrity throughout.
This talk presents the data used to assess veto PDU integrity, preliminary results from reception testing of veto PDUs upon arrival at LNGS, and the planned post-installation testing using a custom data acquisition system.