Speaker
Description
The SABRE North experiment at LNGS is developing ultra-high radiopurity NaI(Tl) detectors to search for dark matter. Radio-purity, especially at the very low level of content required by DM searches, is an extremely challenging task, only partially solved so far for NaI(Tl) crystals.
To achieve its goal, SABRE North utilizes the technique called Zone Refining for NaI powder purification. In this talk, the model developed to describe the purification process for both zone refining and normal freezing will be presented and compared to the results of the Zone Refining commissioning and production runs conducted prior to crystal growth. The status, challenges and results from the zone refining activities will be reported. These results can be used to predict the SABRE North detectors background level in the energy region-of-interest for dark matter search and to optimize the production of ultra-high purity crystals.
| Main Contribution topic | Direct detection |
|---|---|
| Secondary contribution topic | Instrumentation for Dark Matter |