Speaker
Description
DEAP-3600 is a single-phase liquid argon (LAr) dark matter detector located 2 km underground at SNOLAB in Sudbury, Canada, searching for nuclear recoils from dark matter scattering in a 3.3-tonne LAr target. In 2019, the collaboration published a leading limit on the WIMP-nucleon spin-independent cross section, based on 231 exposure days. A new profile likelihood ratio analysis extends the exposure to 790.8 days, with unblinding in progress; it is expected to set the most stringent argon-based exclusion limit for WIMPs, ahead of next-generation experiments such as DarkSide-20k and Argo. Since the second-fill run ended in 2020, the detector has undergone upgrades to reduce shadowed-alpha and dust-related backgrounds, two dominant contributors in the WIMP region of interest. Refilling began in early 2025, followed by vacuum, gas-argon, and LAr datasets, with full data taking continuing into 2026. With these improvements, DEAP-3600 aims for background-free sensitivity at the 10⁻⁴⁶ cm² level, advancing background modeling and detector performance for future LAr dark-matter searches.
| Your current academic level | Postdoctoral researcher |
|---|---|
| Your email address | jhu9@ualberta.ca |
| Affiliation | University of Alberta |
| Supervisor name | Aksel Hallin |
| Supervisor email | aksel.hallin@ualberta.ca |
