Lead Research Organisation: University of Edinburgh
Department Name: Sch of Physics and Astronomy


This proposal will enable the extension of the ZEPLIN-III dark matter search to March 2011 in order to exploit fully the second science run now under way at Boulby. The instrument has been upgraded with a new array of low-background photomultipliers and a new anti-coincidence veto system surrounding the target. In addition, the underground operation has been largely automated, bringing about a gain in data quality as well as a decrease of the resources required to run the experiment. ZEPLIN-III is collecting high quality WIMP-search data and is performing extremely well. This extension will allow ZEPLIN-III, one of a very small number of instruments taking data around the world in 2011, to push further into unexplored WIMP parameter space, at a time when both the LHC and indirect dark matter serches are reaching a comparable level of readiness for discovery of the mysterious dark matter.


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Akimov D (2010) The ZEPLIN-III anti-coincidence veto detector in Astroparticle Physics

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Akimov D (2010) Limits on inelastic dark matter from ZEPLIN-III in Physics Letters B

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Araújo H (2012) Radioactivity backgrounds in ZEPLIN-III in Astroparticle Physics

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Araújo H (2009) Performance results from the first science run of ZEPLIN-III in Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

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Majewski P (2012) Performance data from the ZEPLIN-III second science run in Journal of Instrumentation

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Neves F (2011) ZE3RA: the ZEPLIN-III Reduction and Analysis package in Journal of Instrumentation

Description We built and operated an instrument designed to search for the missing 'dark matter' that is thought to constitute about 85% of the matter in our galaxy. Proving the existence of this material would advance both astronomy and fundamental particle physics. Our results are among the best in the world.

This award allowed the project to continue, to deliver a better science return
Exploitation Route Improved techniques and methodologies
Sectors Other
Description ITEP 
Organisation State Science Centre of Russian Federation Institute of Theoretical and Experimental Physics
Country Russian Federation 
Sector Academic/University 
PI Contribution We converted the raw plastic scintillator in to a very successful anti-coincidence veto detector upgrade for the project
Collaborator Contribution ITEP contributed ~1 tonne of plastic scintillator. They were also full partners in the project, providing support in operations, analysis, data reduction, etc.
Impact In addition to papers, there is the veto detector itself.
Start Year 2007