In simulated sub-GeV neutrino-argon events, combined charge+light calorimetry gives the best energy, an SVM on charge/light features separates νe from anti-νe at ~70%, and nearest-deposit neutron tagging improves antineutrino direction by ~20°.
Modeling Light Signals Using Data from the First Pulsed Neutron Source Program at the DUNE Vertical Drift ColdBox Test Facility at CERN Neutrino Platform
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abstract
In this paper, we present a first quantitative test of detected light signals produced in a pulsed neutron source run in a small vertical drift LArTPC at the CERN neutrino platform ColdBox test facility. The ColdBox cryostat, detectors, neutron sources, and particle interactions are modeled and simulated using Fluka. A good agreement is found in the detected number of photoelectrons, with values below 650 photoelectrons in both data and simulation, for all four X-ARAPUCA photodetectors on the cathode in the LArTPC. A time constant is also fitted from the neutron-beam-off light signal spectrum and found consistent between data and MC. Several important systematic effects are discussed and serve as guides for future runs at larger LArTPCs.
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Enhanced Reconstruction of Sub-GeV Neutrinos Charged Current Interactions in LArTPC
In simulated sub-GeV neutrino-argon events, combined charge+light calorimetry gives the best energy, an SVM on charge/light features separates νe from anti-νe at ~70%, and nearest-deposit neutron tagging improves antineutrino direction by ~20°.