13-19 June 2015
University of Alberta
America/Edmonton timezone
Welcome to the 2015 CAP Congress! / Bienvenue au congrès de l'ACP 2015!

Alpha particle backgrounds from the neck of the DEAP-3600 dark matter detector

16 Jun 2015, 16:30
15m
CCIS 1-140 (University of Alberta)

CCIS 1-140

University of Alberta

Oral (Non-Student) / orale (non-étudiant) Particle Physics / Physique des particules (PPD) T3-4 Cosmic Frontier: Dark Matter III (PPD)/ Frontière cosmique: matière sombre III (PPD)

Speaker

Dr James Bueno (University of Alberta)

Description

The DEAP-3600 dark matter detector at SNOLAB will search for scattering of weakly interacting massive particles from a 3600 kg liquid argon target. The liquid argon is held in a spherical vessel made from acrylic, with the highest standards of purity for both bulk acrylic and removal of surface activities. At the top of the vessel there is a neck opening to the cooling system, and alpha particles decays in this region can potentially introduce a background to the dark matter measurement. The steps to eliminate these alpha backgrounds will be presented, including details on the detector construction, radioactivity simulations, and analysis methods for measuring alpha backgrounds.

Primary author

Dr James Bueno (University of Alberta)

Presentation Materials