Conveners
Long-term light yield stability
- Andrzej Szelc (University of Edinburgh)
Between its first and second WIMP-search runs (Run03 and Run04) the LUX (Large Underground Xenon) detector at SURF (Sanford Underground Research Facility) observed a ~15% sharp drop in its primary scintillation detection efficiency (g1), with an O(5%) further slow drop over the course of the 300+ live-days of Run04. Different possibilities for the cause(s) will be reviewed, including “natural”...
The MicroBooNE experiment is a Liquid Argon Time Projection Chamber (LArTPC) placed along Booster Neutrino Beam (BNB) at Fermilab. Its primary physics goal is to contribute to addressing the elusive short-baseline MiniBooNE low energy excess. MicroBooNE records and utilises both the ionisation charge and scintillation light produced inside the TPC to select and reconstruct its events. The...
Mass spectrometry is typically used to measure U and Th contamination of the materials used to build a low-background detector. However, this technique has the potential to provide essential information about the purity of the gas used by argon-based rare event research experiments. The CIEMAT-DM group has shown that, by ICPMS, it is possible to identify and quantify contaminants in the argon,...
The photon detection system of the DUNE experiment is based on the X-ARAPUCA light trap. The basic constituents of the X-ARAPUCA are: dichroic filters coated with wavelength shifter (para-Therphenyl), a waveshifting plate and an array of SiPMs which detects the trapped photons. A small scale prototype of the X-ARAPUCA has been installed in LAr in a dedicated facility at INFN-Napoli and exposed...
