Speaker
Description
The Deep Underground Neutrino Experiment (DUNE) is a future long-baseline neutrino-oscillation experiment, which will be composed of a Near Detector (ND), located close to the neutrino source at Fermilab (Chicago, Illinois), and a Far Detector (FD) placed at 1300 km from the ND, at the SURF laboratory (Sanford, South Dakota). The DUNE Far Detector will employ four 17-kt active Liquid Argon Time Projection Chambers (LArTPCs) to address fundamental questions in neutrino physics and astrophysics. A key element of the DUNE FD is its Photon Detection System (PDS), based on the innovative X-ARAPUCA light collectors, which enables non-beam physics triggers, improves particle reconstruction, and provides complementary calorimetric information. Large-scale prototypes (protoDUNEs) have been constructed and operated at CERN to validate novel detector technologies under realistic conditions. ProtoDUNE-VD is a 750-ton LArTPC designed with a vertical drift configuration, in which ionization electrons drift vertically under an electric field. This setup provides a full-field test of DUNE’s vertical drift far detector module and is the first opportunity to characterise its PDS. This contribution will present the status of the ProtoDUNE-VD PDS, describe the test program at CERN, and discuss the first outcomes from the collected data, including preliminary performance results.
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