Speaker
Description
The SABRE experiment aims to deploy arrays of ultra-low-background NaI(Tl) crystals to carry out a model-independent search for dark matter through the annual modulation signature.
SABRE will be a double-site experiment, consisting of two separate detectors in the two terrestrial hemispheres. The SABRE North detector will be installed underground at LNGS and will deploy an array of 9 ultra-high radio-purity NaI(Tl) detectors (5 kg mass each) in a Cu and PE passive shielding. The expected background rate in the ROI [1,6] keV is of order 0.5 dru. To this end SABRE North will make use of zone refining purification of the NaI powder.
The collaboration has confirmed by means of several tests the technology to produce 5 kg size NaI(Tl) crystals after zone refining purification,
a breakthrough in the production of ultra-high radio-purity NaI(Tl) scintillators. Based on this development SABRE North is starting crystal production. The first crystal after zone refining will be characterised at LNGS in 2026. Results from zone refining runs and crystal growth development will be reported, together with the time schedule of crystal production and detector deployment.
| Main Contribution topic | Direct detection |
|---|---|
| Secondary contribution topic | Instrumentation for Dark Matter |