My research interests span a broad range of experimental high energy physics and particle astrophysics. My primary research is in the field of neutrino oscillations. I am the national spokesperson of the Canadian effort on the T2K neutrino oscillation experiment, which is trying to measure the n...
My research interests span a broad range of experimental high energy physics and particle astrophysics. My primary research is in the field of neutrino oscillations. I am the national spokesperson of the Canadian effort on the T2K neutrino oscillation experiment, which is trying to measure the neutrino mixing angle q13 by looking for evidence of electron neutrinos appearing in a beam of muon neutrinos. I am co-convener of T2K's near detector group, consisting of over half of the collaboration. I also led the effort to build Fine-Grained Detectors (FGDs) for T2K, which are finely segmented active neutrino targets using polystyrene scintillator, passive water target layers, and Multi-Pixel Photon Counters with wavelength-shifting fibers for read-out. Previously I served as convener of T2K's near detector muon neutrino analysis group and as chair of T2K's Publication Board.
Since July 2000 I have worked on the Sudbury Neutrino Observatory (SNO), which is a solar neutrino experiment designed to measure both the total flux of neutrinos from the Sun and the flux of electron neutrinos. SNO was the first experiment to directly measure the flavor content of the solar neutrino flux, and to demonstrate conclusively that solar neutrinos undergo flavor transformation, pointing to a final resolution of the long-standing solar neutrino problem. The SNO experiment ended in 2006, and is currently writing up its final publications.