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ZEPLIN-III

Experiments for dark matter searchResearch institutes in North Yorkshire
ZEPLIN III CAD XS with particles
ZEPLIN III CAD XS with particles

The ZEPLIN-III dark matter experiment attempted to detect galactic WIMPs using a 12 kg liquid xenon target. It operated from 2006 to 2011 at the Boulby Underground Laboratory in Loftus, North Yorkshire. This was the last in a series of xenon-based experiments in the ZEPLIN programme pursued originally by the UK Dark Matter Collaboration (UKDMC). The ZEPLIN-III project was led by Imperial College London and also included the Rutherford Appleton Laboratory and the University of Edinburgh in the UK, as well as LIP-Coimbra in Portugal and ITEP-Moscow in Russia. It ruled out cross-sections for elastic scattering of WIMPs off nucleons above 3.9 × 10−8 pb (3.9 × 10−44 cm2) from the two science runs conducted at Boulby (83 days in 2008 and 319 days in 2010/11). Direct dark matter search experiments look for extremely rare and very weak collisions expected to occur between the cold dark matter particles that are believed to permeate our galaxy and the nuclei of atoms in the active medium of a radiation detector. These hypothetical elementary particles could be Weakly Interacting Massive Particles, or WIMPs, weighing as little as a few protons or as much as several heavy nuclei. Their nature is not yet known, but no sensible candidates remain within the Standard Model of particle physics to explain the dark matter problem.

Excerpt from the Wikipedia article ZEPLIN-III (License: CC BY-SA 3.0, Authors, Images).

ZEPLIN-III
Whitby Road,

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N 54.5534 ° E -0.8245 °
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Whitby Road
TS13 4UJ
England, United Kingdom
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ZEPLIN III CAD XS with particles
ZEPLIN III CAD XS with particles
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Street House Anglo-Saxon cemetery
Street House Anglo-Saxon cemetery

The Street House Anglo-Saxon cemetery is an Anglo-Saxon burial ground, dating to the second half of the 7th century AD, that was discovered at Street House Farm near Loftus, in the unitary authority of Redcar and Cleveland, England. Monuments dating back as far as 3300 BC are located in the vicinity of the cemetery, which was discovered after aerial photography revealed the existence of an Iron Age rectangular enclosure. The excavations, carried out between 2005 and 2007, revealed over a hundred graves dating from the 7th century AD and the remains of several buildings. An array of jewellery and other artefacts was found, including the jewels once worn by a young high-status Anglo-Saxon woman who had been buried on a bed and covered by an earth mound. The woman's identity is unknown, but the artefacts and the layout of the cemetery are similar to finds in the east and south-east of England. There are contradictory indications of whether the occupants of the cemetery were Christian or pagan, as signs of both traditions are present. It perhaps represents a fusion of the two traditions during the "Conversion Period" when Christianity was taking hold among the Anglo-Saxons but pagan rituals had not yet been displaced, even among Christians. Archaeologists have suggested that the woman and at least some of the people buried around her may have migrated from the south, where bed burials were more common. They may all have been buried together within the space of a single generation, after which the cemetery was abandoned. The finds were acquired by Kirkleatham Museum, Redcar, in 2009 and have been on display there since 2011.