Speaker
Description
The Short-Baseline Near Detector (SBND) is a liquid argon time projection chamber for detecting
neutrinos from Fermilab’s Booster Neutrino Beam. Located 110 m downstream of the beam target,
SBND collects both ionization electrons and scintillation photons from particle interactions within
the detector volume. The photon detection system (PDS) consists of both PMTs and X-ARAPUCAs,
a novel technology featuring large area cost-effective coverage with single photo-electron resolution
at cryogenic temperatures. SBND utilizes two types of X-ARAPUCAs: one sensitive to the vacuum
ultra-violet (VUV) scintillation light produced in liquid argon and one sensitive to the visible light
generated by the reflection of VUV light off the TPB-coated reflective foils at the cathode. SBND
is the only experiment currently testing the X-ARAPUCA technology in a neutrino beam and will
provide critical information for deployment in future detectors like DUNE. This poster will cover the
calibration and early performance of X-ARAPUCAs in SBND.
