Design of the cryogenic systems for the Near and Far LAr-TPC detectors of the Short-Baseline Neutrino program (SBN) at Fermilab

The Short-Baseline Neutrino(SBN) physics program at Fermilaband NeutrinoPlatform (NP) at CERN are part of the international NeutrinoProgram leading to the development of Long-Baseline NeutrinoFacility/ Deep Underground Neutrino Experiment(LBNF/DUNE) science project. The SBN program consisting of three Liquid Argon Time Projection Chamber(LAr-TPC) detectorspositioned along the Booster NeutrinoBeam (BNB) at Fermilabincludes an existing detectorknown as MicroBooNE (170- tonLAr-TPC) plus two new experiments known as SBN's Near Detector(SBND, ~260 tons) and SBN's Far Detector(SBN-FD, ~760 tons). All three detectorshave distinctly different design of their cryostatsthus defining specific requirements for the cryogenicsystems. Fermilabhas already built two new facilities to house SBND and SBN-FD detectors. The cryogenicsystems for these detectorsare in various stages of design and construction with CERN and Fermilabbeing responsible for delivery of specific sub-systems. This contribution presents specific design requirements and typical implementation solutions for each sub-system of the SBND and SBN-FD cryogenicsystems.