Energy calibration for the SND@LHC hadronic calorimeter

SND@LHC is a compact, standalone experiment located in the TI18 tunnel, 480 meters downstream of the ATLAS interaction point, designed to observe neutrinos produced in LHC protonproton (pp) collisions. The SND@LHC detector allows for the identification of all three flavors of neutrino interactions in the pseudorapidity region 7.2 < 𝜂 < 8.4 within an unexplored energy range of 100 GeV < E < 1 TeV. The detector consists of two sections: an instrumented target and a hadron calorimeter. Energetic 𝜈𝑁 collisions in the target produce hadronic showers. To calibrate the hadronic calorimeter, a replica of the detector was exposed to hadron beams with energies ranging from 100 to 300 GeV at the CERN SPS H8 test beam line during the summer of 2023. The experimental setup allowed for the study of showers as a function of both energy and their starting position within the target depth. This calibration achieved an energy resolution of 12-20% for the reconstruction of hadronic showers.