Conveners
T3-3 Dark Matter II (PPD) | Matière sombre II (PPD)
- Wolfgang Rau (Queen`s University)
An analysis of several machine learning algorithms performing position classification on data in the DEAP-3600 detector will be presented. Due to possible surface contamination, the sensitivity of the experiment can be improved by selecting an inner sub-volume (fiducial volume) from the data. One method used to do this is called the ``MBLikelihood'' algorithm, which maximizes a likelihood...
PICO is a direct Dark Matter detection experiment which focuses on elastic scattering of WIMPs (Weakly Interacting Massive Particle) with baryonic matter. The physics of the detector is based on the super heated liquid technique. The active liquid, presently C3F8, is kept at a temperature and pressure just above the boiling point. A slight perturbation in the liquid, e.g. energy deposited by...
The fractoluminescent properties of BGO (Bi4Ge3O12) scintillators used as particle detectors have been studied in order to quantify the background light generation from fracture. BGO samples in a double-cleavage drilled compression (DCDC) geometry have been stressed to fracture with the crack length and acoustic and light emissions measured in both ambient and vacuum conditions. Using this...
DEAP-3600 is a single phase liquid argon dark matter search experiment. The liquid argon target mass is contained in a spherical acrylic vessel and viewed by a surrounding array of photomultiplier tubes. Particle interaction in liquid argon produce scintillation light in the vacuum ultraviolet (VUV) spectrum, which is efficiently absorbed by the surrounding acrylic. To make visible...
Uncovered mysteries about neutrinos bring us deep underground to answer questions about the Universe. SNO+ is a multipurpose experiment situated at the SNOLAB facility located at Creighton mine 2km deep. The SNO+ experiment has three phases: water, pure scintillator and Te loaded scintillator. With this scintillator filled detector, solar neutrinos, geo and reactor anti-neutrinos, even...
The SNO+ experiment is a kilo-tonne scale liquid scintillator detector located at SNOLAB which is currently operating in its water phase. The water phase is used for testing the detector performance, photomultiplier tube (PMT) response and test the data acquisition system (DAQ). One of the main physics includes the search for invisible nucleon decay in 16O, where a decaying neutron will...
