Ponente
Descripción
The Short-Baseline Near Detector (SBND) is a 112 ton Liquid Argon Time Projection Chamber (LArTPC) neutrino experiment located 110 m away from the Booster Neutrino Beam (BNB) target in Fermilab, (Illinois, USA). The main physics goals of SBND are the search for sterile neutrinos in the eV scale, the study of neutrino-argon interactions and the hunt for Beyond Standard Model physics. As a LArTPC, SBND collects the ionization electrons produced by charged particles inside the detector generating mm-level 3D pictures of the interactions, as well as scintillation light produced by argon excimers. The SBND photon detection system (PDS) is composed of 120 photomultiplier tubes (PMTs), and 196 X-ARAPUCAs, a new scalable technology that will also be used by the DUNE experiment based on trapping the light using a dichroic filter. SBND PDS is unique in collecting both VUV and visible light, re-emitted by TPB-coated foils in the cathode plane. The PDS acquires the photons providing interaction timing, triggering and background rejection, crucial for a near surface detector exposed to the cosmic rays background. In this talk, we present the current status of SBND PDS, as well as the latest characterization and installation measurements of the PDS components.
