Conveners
(F1-5) Future of Cosmic Frontier: Dark Matter III and Dark Energy - PPD-DTP / Avenir de la frontière cosmique: matière sombre III et énergie sombre - PPD-DTP
- Matthias Danninger (University of British Columbia (CA))
Mr
Mathieu Laurin
(PICO / Université de Montréal)
20/06/2014, 08:45
Particle Physics / Physique des particules (PPD)
Oral (Student, Not in Competition) / Orale (Étudiant(e), pas dans la compétition)
Low energetic, elastic neutron scattering is an ideal tool to characterize dark matter detectors. At University of Montreal, we use our Tandem Van de Graaff accelerator to calibrate superheated liquid detectors of the PICASSO/PICO dark matter search experiment. Mono-energetic neutrons are produced via the 51V(p,n)51Cr nuclear reaction at well-defined resonance energies in the range of 4 to 120...
Mr
Michael Clark
(Queen's University)
20/06/2014, 09:00
Particle Physics / Physique des particules (PPD)
Oral (Student, Not in Competition) / Orale (Étudiant(e), pas dans la compétition)
Searches for particle dark matter are one of the most active fields in physics, with many experiments using different methods to search for possible dark matter candidates. Direct-detection experiments look for rare interactions between some detector mass and these dark matter particles. Cryogenic scintillator detectors have the advantage that there are many possible scintillator materials...
Mr
Giampa Pietro
(Queen's University)
20/06/2014, 09:15
Particle Physics / Physique des particules (PPD)
Oral (Student, Not in Competition) / Orale (Étudiant(e), pas dans la compétition)
Background reduction is an key aspect of all Dark Matter experiments, including DEAP-3600.
With this goal in mind we built the resurfacer, a machine aimed to reduce the amount of
radon decay daughters present inside the detector by sanding of 100 microns of acrylic from
the inner vessel. In this talk we discuss the deployment of the resurfacer
in the DEAP-3600 detector, located 2 km...
Thomas Sonley
(Q)
20/06/2014, 09:30
Particle Physics / Physique des particules (PPD)
Oral (Non-Student) / orale (non-étudiant)
The DEAP-3600 experiment is a dark matter direct detection search using a large liquid argon scintillation detector located 2 km underground in SNOLAB. It uses 3.6 tonnes of liquid argon as a target and another 4 tonnes of liquid nitrogen as a cooling reservoir. If these cryogens were to quickly evaporate in an accident, they could pose a significant oxygen deficiency hazard to personnel. I...
nasim fatemighomi
(Queen's University)
20/06/2014, 09:45
Particle Physics / Physique des particules (PPD)
Oral (Non-Student) / orale (non-étudiant)
SNO+ is a multi-tonne scale experiment situated at SNOLAB. The primary goal of SNO+ is to search for neutrinoless double beta decay. Another physics goal of SNO+ is to probe low energy solar neutrinos. Rn-222 daughters are problematic backgrounds to physics reach of SNO+. The SNO+ cover gas system is designed in order to prevent Rn-222 ingress in the detector. In this talk, I will present ...
Ms
Divya Bhatnagar
(University of Victoria),
Justin Albert
(University of Victoria (CA))
20/06/2014, 10:00
Instrumentation and Measurement Physics / Physique des instruments et mesures (DIMP-DPIM)
Oral (Non-Student) / orale (non-étudiant)
Understanding the properties of dark energy via supernova surveys (and to a large extent other methods as well) requires unprecedented photometric precision. Laboratory and solar photometry and radiometry regularly achieve precisions on the order of parts in ten thousand, but photometric calibration for non-solar astronomical imaging presently remains stuck at the percent or greater level. We...
