The DEAP 3600 Dark Mater Detector

The DEAP-3600 dark matter detector consists of 3,600 kg of liquid argon contained in an ultra-pure acrylic cryogenic vessel. The experiment is located 2 km underground at SNOLAB. DEAP-3600 is entering the commissioning phase. Scintillation light from events in the detector is observed by 255 high-efficiency room temperature PMTs. Electromagnetic backgrounds, including those from argon-39, are rejected using pulse shape discrimination based on timing. Backgrounds from neutrons and alphas are mitigated by ensuring excellent radiopurity and using a high efficiency neutron shield. The DEAP-3600 background budget is 0.2 events per year allowing a cross-section sensitivity of 10$^{-46}$ cm$^2$ for scattering of Weakly Interacting Massive Particles with a 100-GeV mass in a 3-year run. In this talk, we will describe the status and physics reach, highlighting that it is expected to reach competitive sensitivity within months of the start of data collection.