Search
Now showing items 1-10 of 19
Detector Development and Test Facility Commissioning for SuperCDMS
(2011-06-06)
SuperCDMS, the next stage of the Cryogenic Dark Matter Search (CDMS), uses cylindrical germa-
nium crystals as particle detectors to measure phonon and ionization signals resulting from particle
interactions. The aim of ...
Characterization of Pulse–Shape Discrimination for Background Reduction in the DEAP-1 Detector
(2009-02-02)
DEAP (Dark Matter Experiment with Argon and Pulse Shape Discrimination) is
an experiment that aims to directly detect dark matter particles via nuclear recoils
in liquid argon. The experiment uses the scintillation ...
Gamma Calibration Using A New Test Apparatus At Queen’s University And Optimization Analyses For The PICASSO Experiment
(2009-09-26)
The PICASSO experiment located 2 km underground in SNOLAB is directly
searching for dark matter signals by looking for interactions between dark matter
particles and an active target made of superheated droplets of freon ...
An Investigation of Backgrounds in the DEAP-3600 Dark Matter Direct Detection Experiment
(2013-10-11)
Astronomical and cosmological observations reveal that the majority of the matter in our universe is made of an unknown, non-luminous substance called dark matter. Many experimental attempts are underway to directly detect ...
Optimization of spherical proportional counter backgrounds and response for low mass dark matter search
The NEWS-G collaboration uses Spherical Proportional Counters to search for Weakly Interacting Massive Particles (WIMP). The first detector developed for this goal is a 60 cm diameter sphere installed at the Laboratoire ...
Calibration of Infrared Photons in Cryogenic Germanium Detectors
A significant evidence from galaxies and astrophysical observations, suggests that ~ 85% of the matter in our Universe is invisible matter. The observations of the so-called “dark matter” suggest that it consists of ...
On the Development of the Wavelength Shifter Deposition System for the DEAP-3600 Dark Matter Search Experiment
(2015-11-03)
The DEAP-3600 dark matter search experiment uses 3600 kilograms of liquid argon as a target medium contained in a spherical acrylic vessel. Particle interactions in liquid argon produce vacuum ultraviolet light at a peak ...
Alpha backgrounds in the DEAP dark matter search experiment.
(2012-08-10)
One of the pressing concerns in Dark Matter detection experiments is ensuring that the potential signal from exceedingly rare Dark Matter interactions is not obscured by background from interactions with more common ...
Simulations of the Muon Veto and Background Expectations for the PICO500 Dark Matter Experiment
PICO500 is an upcoming dark matter experiment searching for Weakly Interacting Massive Particle (WIMP) dark matter. The experiment is a 500L bubble chamber and is currently in the design phase. This thesis presents simulations ...
Rejecting Outer Radius Backgrounds in SuperCDMS High Voltage Dark Matter Searches
SuperCDMS searches for Dark Matter in the form of WIMPs. SuperCDMS is able to reject most common background events by discriminating between electron and nuclear recoils. In the CDMS low ionization threshold experiment ...