Dr. Art McDonald
Queen's University for the SNO Collaboration
FREE PUBLIC LECTURE
Monday, March 21, 2016
7:30 pm, CCIS Lecture Theatre 1-430
Reserve your free ticket through Eventbrite.
The nuclear reactions that power the sun produce enormous numbers of neutrinos that pass easily through the sun and provide a detailed measure of how the sun burns. To observe these elusive particles without interference from radioactive background, the Sudbury Neutrino Observatory (SNO) detector was developed to use 1000 tonnes of heavy water 2 km underground in an ultra-clean laboratory near Sudbury Ontario. This unique detector enabled the SNO Collaboration of scientists from Canada, the US and the UK to observe new properties of neutrinos, including the fact that they change among the three known types and therefore have a finite mass. These new properties are outside the predictions of the Standard Model for Elementary Particles and are of fundamental importance for the more complete understanding of the basic laws of physics and the evolution of our Universe. Members of the present physics faculty at the University of Alberta played substantial roles in the SNO experiment and have similar roles in further experiments at the expanded SNOLAB international underground science facility. Modification of the SNO detector to create SNO+ and study further properties of neutrinos through a rare radioactive process (neutrino-less double beta decay) and the DEAP experiment using liquid argon to search for Dark Matter particles making up 26% of our Universe will be described.