The SABRE South technical design report executive summary

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dc.contributor.authorBarberio, E.
dc.contributor.authorBaroncelli, T.
dc.contributor.authorBashu, V.U.
dc.contributor.authorBignell, L.J.
dc.contributor.authorBolognino, I.
dc.contributor.authorBrooks, G.
dc.contributor.authorChhun, S.S.
dc.contributor.authorDastgiri, F.
dc.contributor.authorDi Giacinto, A.
dc.contributor.authorD'Imperio, G.
dc.contributor.authorDuffy, A.R.
dc.contributor.authorFroehlich, M.B.
dc.contributor.authorFruth, T.
dc.contributor.authorFu, G.
dc.contributor.authorHill, G.C.
dc.contributor.authorJames, R.S.
dc.contributor.authorJanssens, K.
dc.contributor.authorKapoor, S.
dc.contributor.authorLane, G.J.
dc.contributor.authorLeaver, K.T.
dc.contributor.authoret al.
dc.date.issued2025
dc.description.abstractIn this technical design report (TDR) executive summary we describe the SABRE South detector to be built at the Stawell Underground Physics Laboratory (SUPL). The SABRE South detector is designed to test the long-standing DAMA/LIBRA signal of an annually modulating rate consistent with dark matter by using the same target material. Located in the Southern Hemisphere, the detector is uniquely positioned to disentangle modulating seasonal effects. SABRE South uses seven ultra-high purity NaI(Tl) crystals (with a total target mass of either 35 kg or 50 kg), hermetically sealed in copper enclosures that are suspended within a liquid scintillator active veto. High quantum efficiency and low background Hamamatsu R11065 photomultiplier tubes are directly coupled to both ends of the crystal, and enclosed with the crystal in an oxygen free copper enclosure. The active veto system consists of 11.6 kL of linear alkylbenzene (LAB) doped with a mixture of fluorophores and contained in a steel vessel, which is instrumented with at least 18 Hamamatsu R5912 photomultipliers. The active veto tags key radiogenic backgrounds intrinsic to the crystals, such as ⁴⁰K, and is expected to suppress the total background by 27% in the 1–6 keV region of interest. In addition to the liquid scintillator veto, a muon veto is positioned above the detector shielding. This muon veto consists of eight EJ-200 scintillator modules, with Hamamatsu R13089 photomultipliers coupled to both ends. With an expected total background of 0.72 cpd/kg/keV, SABRE South can test the DAMA/LIBRA signal with 5𝜎 discovery or 3𝜎 exclusion after two years of data taking.
dc.description.statementofresponsibilitySABRE South Collaboration
dc.identifier.citationJournal of Instrumentation, 2025; 20(4):T04001-1-T04001-40
dc.identifier.doi10.1088/1748-0221/20/04/t04001
dc.identifier.issn1748-0221
dc.identifier.issn1748-0221
dc.identifier.orcidBolognino, I. [0000-0002-1511-2553]
dc.identifier.orcidJanssens, K. [0000-0001-8760-4429]
dc.identifier.orcidLeaver, K.T. [0000-0003-1831-4959]
dc.identifier.orcidMcGee, P. [0000-0002-9576-442X]
dc.identifier.orcidWilliams, A.G. [0000-0002-1472-1592]
dc.identifier.urihttps://hdl.handle.net/2440/147179
dc.language.isoen
dc.publisherIOP Publishing
dc.relation.granthttp://purl.org/au-research/grants/arc/CE200100008
dc.relation.granthttp://purl.org/au-research/grants/arc/LE190100196
dc.relation.granthttp://purl.org/au-research/grants/arc/LE170100162
dc.relation.granthttp://purl.org/au-research/grants/arc/LE160100080
dc.relation.granthttp://purl.org/au-research/grants/arc/DP190103123
dc.relation.granthttp://purl.org/au-research/grants/arc/DP170101675
dc.relation.granthttp://purl.org/au-research/grants/arc/LP150100705
dc.rights© 2025 The Author(s). Published by IOP Publishing Ltd on behalf of Sissa Medialab. Original content from this work may be used under the terms of the Creative Commons Attribution 4.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.
dc.source.urihttps://doi.org/10.1088/1748-0221/20/04/t04001
dc.subjectDark Matter detectors (WIMPs, axions, etc.); Large detector systems for particle and astroparticle physics; Scintillators, scintillation and light emission processes (solid, gas and liquid scintillators); Photon detectors for UV, visible and IR photons (vacuum) (photomultipliers, HPDs, others)
dc.titleThe SABRE South technical design report executive summary
dc.typeJournal article
pubs.publication-statusPublished

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