Imperial College London

ProfessorTimothySumner

Faculty of Natural SciencesDepartment of Physics

Professor of Experimental Astrophysics
 
 
 
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Contact

 

+44 (0)20 7594 7552t.sumner

 
 
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Location

 

1108Blackett LaboratorySouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@inproceedings{Sumner:2010,
author = {Sumner, TJ},
title = {ZEPLIN-III},
year = {2010}
}

RIS format (EndNote, RefMan)

TY  - CPAPER
AB - ZEPLIN-III is a 12 kg two-phase xenon time projection chamber used to search for the weakly interacting massive particles (WIMPs) that may account for the dark matter of our Galaxy. The detector measures both scintillation and ionisation produced interactions in the liquid to differentiate between nuclear recoils expected from WIMPs and electron recoil background signals down to ∼10 keV nuclear recoil energy. This paper reviews the science results obtained from the frst science run and reports on the current status of the upgrade and second science run. The frst science run obtained 847kgdays of data acquired between February 27th 2008 and May 20th 2008 and excluded a WIMP-nucleon elastic scattering spin-independent cross-section above 8.1 × 10-8pb at 60 GeVc-2 with a 90% confdence limit. ZEPLIN-III demonstrated better discrimination at low-energy than previously achieved by any other xenon-based experiments and highlighted a non-linearity in the low-energy response to nuclear recoils. The upgrade includes replacement of the PMT array and the addition of an active veto for gammas and neutrons. The second science run should offer an order of magnitude improvement in sensitivity. © Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike Licence.
AU - Sumner,TJ
PY - 2010///
TI - ZEPLIN-III
ER -