Conveners
PPD Poster Session with beer / Session d'affiches, avec bière PPD
- Jean-Francois Arguin (Universite de Montreal (CA))
Dr
Marcin Kuźniak
(Queen's University), Dr
Tina Pollmann
(Laurentian University)
17/06/2015, 19:00
Particle Physics / Physique des particules (PPD)
Poster (Non-Student) / affiche (non-étudiant)
The DEAP detector uses 255 photo multiplier tubes (PMTs) to detect the faint scintillation light from possible WIMP interactions in liquid argon. A photoelectron released when a scintillation photon strikes the front face of the PMT is amplified inside the PMT, and the resulting single-photoelectron (SPE) charge signal recorded. Due to random fluctuations in the amplification process, the...
Chris Jillings
(SNOLAB)
17/06/2015, 19:02
Particle Physics / Physique des particules (PPD)
Poster (Non-Student) / affiche (non-étudiant)
The DEAP-3600 detector uses natural liquid argon as target material for WIMP interactions. Natural argon contains the beta emitter Ar-39, which will create about 3600 beta events per second, uniformly distributed across the active detector volume. By fitting the shape of the beta spectrum from these events as a function of event position, a position-dependent energy calibration of the whole...
Pietro Giampa
(Queen's University), Dr
Tina Pollmann
(Laurentian University)
17/06/2015, 19:04
Particle Physics / Physique des particules (PPD)
Poster (Non-Student) / affiche (non-étudiant)
The current standard model of cosmology relies on the presence of vast amounts of Dark Matter throughout the universe, made from particles that have never been observed in the laboratory. New particles are also predicted from the side of particle physics, where they arise in theoretical extensions that would make the standard model of particle physics consistent. The new particle favoured for...
Courtney Mielnichuk
17/06/2015, 19:06
Particle Physics / Physique des particules (PPD)
Poster (Student, In Competition) / Affiche (Étudiant(e), inscrit à la compétition)
DEAP-3600 is dark matter detector that will be searching for spin-independent interactions of weakly interacting massive particles with a 1000 kg fiducial volume of liquid argon contained in an acrylic sphere.
Strict material selection has been implemented to minimize the presence of uranium and thorium. Alpha decays of these elements in the detector neck will produce scintillation light...
Dr
Bei Cai
(Queen's University)
17/06/2015, 19:08
Particle Physics / Physique des particules (PPD)
Poster (Non-Student) / affiche (non-étudiant)
The success of any Dark Matter experiment depends on the ability of reducing any possible sources of backgrounds. For the DEAP-3600 experiment, surface backgrounds were reduced in-situ by removing more than 100 microns of acrylic from the most inner part of the detector with a resurfacing robot (Resurfacer). This machine was successfully run for over 200 hours, combined with a purge gas system...
Mr
Nicolas Giasson
(Université Laval)
17/06/2015, 19:10
Particle Physics / Physique des particules (PPD)
Poster (Student, Not in Competition) / Affiche (Étudiant(e), pas dans la compétition)
The Skyrme model, which was first proposed over half a century ago, is now understood as a low-energy effective theory of QCD where baryons (and nuclei) emerge as topological solitons. It provides a relatively good picture of the nucleons, but it overestimates their binding energies in nuclei by at least an order of magnitude. The present work is based on a recent extension of the original...
