The ArDM Liquid Argon Time Projection Chamber at the Canfranc Underground Laboratory: a ton-scale detector for Dark Matter Searches

Understand

The Argon Dark Matter (ArDM) experiment consists of a liquid argon (LAr) time projection chamber (TPC) sensitive to nuclear recoils resulting from scattering of hypothetical Weakly Interacting Massive Particles (WIMPs) on argon targets.

• With an active target of 850 kg, ArDM represents an important milestone in the quest for Dark Matter with LAr.
• We present the experimental apparatus currently installed underground at the Laboratorio Subterraneo de Canfranc (LSC), Spain.
• We show first data recorded during a single-phase commissioning run in 2015 (ArDM Run I), which overall confirm the good and stable performance of the ton-scale LAr detector.