Speaker
Description
The Black Hills Underground Campus (BHUC) on the 4850L of the Sanford Underground Research Facility (SURF) is pursuing methods to enhance its radioassay sensitivity when screening materials for future ultra-low-background experiments. This will be primarily pursued through its dual-crystal High Purity Germanium (HPGe) system, the Twins. This detector station holds dual detectors in a large inner sample chamber with the ability to reconfigure the positioning of the two detectors along one axis to accommodate large or compact sample geometries. Sensitivity will be bolstered by having additional crystal mass as well as the ability to perform coincidence/anticoincidence measurements for select applications. The dual detector system was re-installed in the BHUC in the summer of 2025. A description of the Twins system will be presented, along with its current status