The Photon Detection System (PDS) at ProtoDUNE

The Deep Underground Neutrino Experiment (DUNE) is a future accelerator based neutrino experiment hosted at Fermilab with a number of proposed investigations including leptonic CP-violation, neutrino oscillation parameters, the mass hierarchy question, neutrino signals from supernovae (SN) and the existence of proton decay. Last fall, the first in a pair of full scale prototypes of DUNE, the ProtoDUNE Single Phase (ProtoDUNE-SP) experiment, was activated. Over three months of active beam time, it recorded signals from particles of various momenta provided by the CERN SPS accelerator. This talk will focus on one of the sub-detectors, the ProtoDUNE Photon Detection System (PDS), and mostly concern the light captured by the PDS which can provide nanosecond scale timing for the entire detector. The PDS will enhance DUNE's capability to detect potential SN events as well as its ability to search for proton-decay signature. Progress on photon detector calibration and event flash timing will be presented along with a comparison of prototype photon collector technology performance. Progress on current physics analyses involving the PDS will also be included.