The SABRE South technical design report executive summary
Abstract In 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 40 K, 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 5 σ discovery or 3 σ exclusion after two years of data taking.
Authors
- V. Pettinacci (ORCID: https://orcid.org/0000-0001-8216-7282)
- Sanjana Kapoor (ORCID: https://orcid.org/0009-0003-5199-026X)
- J. R. Mould (ORCID: https://orcid.org/0000-0003-3820-1740)
- A. E. Stuchbery (ORCID: https://orcid.org/0000-0002-0198-9901)
- K. Janssens (ORCID: https://orcid.org/0000-0001-8760-4429)
- A. Di Giacinto
- M. Mews
- G. C. Hill (ORCID: https://orcid.org/0000-0001-8881-6802)
- Alan R. Duffy (ORCID: https://orcid.org/0000-0002-9636-1809)
- L.J. Bignell (ORCID: https://orcid.org/0000-0001-9013-3058)
- Geoffrey Alan Brooks (ORCID: https://orcid.org/0000-0002-8499-780X)
- F. Scutti (ORCID: https://orcid.org/0000-0001-7690-9083)
- M. J. Zurowski (ORCID: https://orcid.org/0000-0003-2839-2838)
- F. Dastgiri (ORCID: https://orcid.org/0000-0001-5814-4398)
- M.B. Froehlich (ORCID: https://orcid.org/0000-0002-1938-8119)
- P. McGee (ORCID: https://orcid.org/0000-0002-9576-442X)
- W. J. D. Melbourne (ORCID: https://orcid.org/0000-0003-1056-7206)
- L.J. McKie (ORCID: https://orcid.org/0000-0002-8176-498X)
- G. N. Taylor (ORCID: https://orcid.org/0000-0002-1831-4871)
- B. Suerfu (ORCID: https://orcid.org/0000-0003-0259-7392)
- K. T. Leaver (ORCID: https://orcid.org/0000-0003-1831-4959)
- E. L. Barberio (ORCID: https://orcid.org/0000-0002-3111-0910)
- R. S. James (ORCID: https://orcid.org/0000-0003-3937-5435)
- P. Urquijo (ORCID: https://orcid.org/0000-0002-0887-7953)
- Y. Xing (ORCID: https://orcid.org/0000-0002-1866-5188)
- To. Baroncelli
- A. Mariani (ORCID: https://orcid.org/0000-0002-8184-8577)
- G. Milana
- P. C. McNamara (ORCID: https://orcid.org/0000-0002-8176-498X)
- T. Fruth (ORCID: https://orcid.org/0000-0001-8555-355X)
- G. Fu (ORCID: https://orcid.org/0000-0003-4835-6041)
- L. J. Milligan (ORCID: https://orcid.org/0000-0001-8316-8973)
- I. Bolognino (ORCID: https://orcid.org/0000-0002-1511-2553)
- Z. Slavkovská (ORCID: https://orcid.org/0000-0002-6384-4353)
- Anthony G. Williams (ORCID: https://orcid.org/0000-0002-1472-1592)
- V. U. Bashu (ORCID: https://orcid.org/0009-0009-2784-6309)
- G. J. Lane (ORCID: https://orcid.org/0000-0003-2244-182X)
- Matthew Stanley (ORCID: https://orcid.org/0000-0001-9029-7335)
- K.J. Rule
- S.S. Chhun (ORCID: https://orcid.org/0009-0001-3733-4309)
- C. Vignoli (ORCID: https://orcid.org/0000-0002-8470-2389)
- G. D’imperio (ORCID: https://orcid.org/0000-0002-2945-0983)
- John A. McKenzie (ORCID: https://orcid.org/0000-0001-9229-9537)
- D. Tempra
- T. Tunningly
Institutions
- Australian National University (AU)
- The University of Sydney (AU)
- High Energy Accelerator Research Organization (JP)
- The University of Melbourne (AU)
- University of Toronto (CA)
- Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali del Gran Sasso (IT)
- ARC Centre of Excellence for Dark Matter Particle Physics (AU)
- Istituto Nazionale di Fisica Nucleare, Sezione di Milano (IT)
- Istituto Nazionale di Fisica Nucleare, Sezione di Roma I (IT)
- The University of Adelaide (AU)
- Swinburne University of Technology (AU)
Publication Details
- Journal
- Journal of Instrumentation
- Published
- 2025-04-01
- DOI
- https://doi.org/10.1088/1748-0221/20/04/t04001
- Citations
- 4
- Primary Topic
- Electromagnetic Compatibility and Measurements
- Type
- article
- Field-Weighted Citation Impact
- 2.92