The UK Dark Matter Collaboration (UKDMC) (1987–2007) was an experiment to search for Weakly interacting massive particles (WIMPs). The consortium consisted of astrophysicists and particle physicists from the United Kingdom, who conducted experiments with the ultimate goal of detecting rare scattering events which would occur if galactic dark matter consists largely of a new heavy neutral particle. Detectors were set up 1,100 m (3,600 ft) underground in a halite seam at the Boulby Mine in North Yorkshire.
UKDMC operated multiple dark matter detectors and developed techniques for WIMP searches in crystals and xenon.
In 1996 they published limits that were obtained using room temperature crystals.[1]NAIAD was an array of NaI(Tl) crystals that ran 2001–2003, collecting 44.9 kg×years of exposure, setting spin-independent and spin-dependent limits on WIMPs.[2] Then the ZEPLIN series of searches were done.
References
^P.F.Smith; et al. (1996). "Improved dark matter limits from pulse shape discrimination in a low background sodium iodide detector at the Boulby mine". Phys. Lett. B. 379 (1–4): 299–308. Bibcode:1996PhLB..379..299S. doi:10.1016/0370-2693(96)00350-4.