WIMP-nucleon cross sections below 10^(-9) pb may be probed by ton-scale experiments with low thresholds and background rates ~20 events per year. An array of cryogenic detectors ("CryoArray") could perform well enough to reach this goal. Sufficient discrimination and background suppression of photons has already been demonstrated. Reduction of neutron backgrounds may be achieved by siting the experiment deep enough. Removal of the surface-electron backgrounds alone has not yet been demonstrated, but the reductions required even for this troublesome background are quite modest and appear achieveable.
@article{arxiv.astro-ph/0208326,
title = {Expected Performance of CryoArray},
author = {R. W. Schnee and D. S. Akerib and R. J. Gaitskell},
journal= {arXiv preprint arXiv:astro-ph/0208326},
year = {2009}
}
Comments
4 pages, 2 figures. Talk at DM2002 Conference, Marina del Rey, CA, Feb 20-22, 2002