Dark matter search at SNOLAB with DEAP-1 and DEAP/CLEAN-3600

The DEAP/CLEAN experiment will search for dark matter particle interactions on liquid argon at SNOLAB, located in an active nickel mine 2 km underground in Sudbury, Canada. The first generation detector (DEAP-1) with a 7-kg liquid argon target mass is currently operating underground at SNOLAB. It has demonstrated a pulse-shape discrimination (PSD) of 6x10-8 for reducing γ/β backgrounds, and is currently acquiring data for a dark matter search and improved PSD demonstration at SNOLAB. A larger detector (DEAP/CLEAN-3600) containing a total of 3600 kg of liquid argon is being designed, with a target sensitivity to spin-independent scattering on nucleons of 10-46 cm2, several hundred times more sensitive than current dark matter searches