  The ArDM project aims at developing and operating large noble liquid
detectors to search for direct evidence of Weakly Interacting Massive Particle
(WIMP) as Dark Matter in the Universe. The initial goal is to design, assemble
and operate a $\approx$1 ton liquid Argon prototype to demonstrate the
feasibility of a ton-scale experiment with the required performance to
efficiently detect and sufficiently discriminate backgrounds for a successful
WIMP detection. Our design addresses the possibility to detect independently
ionization and scintillation signals. In this paper, we describe this goal and
the conceptual design of the detector.
