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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.

Background

WIMPs are considered prime candidates for dark matter, which accounts for approximately nine-tenths of the mass of certain galaxies, such as the Milky Way. WIMPs are predicted by several supersymmetric theories of particle physics. The particle detectors used for this experiment are placed 1100 metres below the surface of Yorkshire's Boulby mine.
History

UKDMC began in 1987, with principal participants from several notable institutions, including the Imperial College of Science, Technology and Medicine, the CCLRC's Rutherford Appleton Laboratory, and the University of Sheffield. Funding for the programme was provided by the Particle Physics and Astronomy Research Council (PPARC), as well as Cleveland Potash Ltd. which operates the mine where the experiments were conducted. The underground laboratory was officially opened on 18 April 2003, and the experiment ran until 2007 when collaborating institutions and scientists moved on to the related projects ZEPLIN-III and DRIFT-II.
Experiments

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". Physics Letters B. 379 (1–4): 299–308. Bibcode:1996PhLB..379..299S. doi:10.1016/0370-2693(96)00350-4.

UK Dark Matter Collaboration (9 Jun 2005). "Limits on WIMP cross-sections from the NAIAD experiment at the Boulby Underground Laboratory". Physics Letters B. 616 (1–2): 17–24. arXiv:hep-ex/0504031. Bibcode:2005PhLB..616...17U. doi:10.1016/j.physletb.2000.09.001.

External links

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Dark matter
Forms of
dark matter

Baryonic dark matter Cold dark matter Hot dark matter Light dark matter Mixed dark matter Warm dark matter Self-interacting dark matter Scalar field dark matter Primordial black holes


Hypothetical particles

Axino Axion Dark photon Holeum LSP Minicharged particle Neutralino Sterile neutrino SIMP WIMP

Theories
and objects

Cuspy halo problem Dark fluid Dark galaxy Dark globular cluster Dark matter halo Dark radiation Dark star Dwarf galaxy problem Halo mass function Mass dimension one fermions Massive compact halo object Mirror matter Navarro–Frenk–White profile Scalar field dark matter

Search
experiments
Direct
detection

ADMX ANAIS ArDM CDEX CDMS CLEAN CoGeNT COSINE COUPP CRESST CUORE D3 DAMA/LIBRA DAMA/NaI DAMIC DarkSide DARWIN DEAP DM-Ice DMTPC DRIFT EDELWEISS EURECA KIMS LUX LZ MACRO MIMAC NAIAD NEWAGE NEWS-G PandaX PICASSO PICO ROSEBUD SABRE SIMPLE TREX-DM UKDMC WARP XENON XMASS ZEPLIN

Indirect
detection

AMS-02 ANTARES ATIC CALET CAST DAMPE Fermi HAWC HESS IceCube MAGIC MOA OGLE PAMELA VERITAS

Other projects

MultiDark PVLAS

Potential dark galaxies

HE0450-2958 HVC 127-41-330 Smith's Cloud VIRGOHI21

Related

Antimatter Dark energy Exotic matter Galaxy formation and evolution Illustris project Imaginary mass Negative mass UniverseMachine

Physics Encyclopedia

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