17-22 July 2016
Master Cutlers Hall
Europe/London timezone

Calibration of the LUX Dark Matter Experiment

19 Jul 2016, 14:00
20m
Venue: Cutlers' Main Hall (First Floor); Chair: Darren Grant; Session Manager: David Woodward ()

Venue: Cutlers' Main Hall (First Floor); Chair: Darren Grant; Session Manager: David Woodward

Speaker

Ms. Sally Shaw (UCL)

Description

The LUX dark matter experiment is a 350 kg dual-phase liquid xenon time projection chamber located at the Sanford Underground Research Facility, South Dakota. LUX’s primary science run is now complete, and its response to both electron and nuclear recoils across a wide range of energies is the subject of on-going study. This work is critical to interpretation of any potential WIMP signal. I will discuss the range of innovative calibration techniques developed and used in LUX and their results, with a focus on the D-D Neutron Generator calibration. This is a novel procedure that uses a beam of 2.45 MeV mono-energetic neutrons fired directly into the detector to perform in-situ measurements of the light and charge yields of liquid xenon, at energies lower than ever before. The resulting ultra-low energy calibrations of the nuclear recoil signal yields are essential for the discovery potential of the latest data, as well as being a confirmation of the detector response used for the first LUX WIMP search analysis. Furthermore, they allowed a new limit on dark matter properties to be published late last year from a reanalysis of the first science run data, showing improved low mass WIMP sensitivity.

Primary author

Ms. Sally Shaw (UCL)

Presentation Materials

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