Current Results and Future Prospects of the SNO+ Experiment

by Daniel Cookman (King's College London)

Wednesday 1 Oct 2025, 16:00 → 17:00 Europe/London

Berry Lecture Theatre

The SNO+ experiment is a large, multi-purpose neutrino detector, based 2 km underground in SNOLAB, Canada. The detector consists of 800 tonnes of liquid scintillator within a spherical acrylic vessel, surrounded by over 9000 PMTs. After an initial water phase, the detector has been taking high quality scintillator phase data for over two years. With our high light yield and low background levels, we have been making exciting measurements of (anti-)neutrinos coming from reactors, the Earth, and the Sun. This includes the World's second-most precise measurement of the solar neutrino mass splitting and the first-ever observation of solar neutrino interactions on C-13 nuclei. We have also been using this data to quantify our radioactive backgrounds and detector response, in view of the upcoming project to load the detector initially with 0.5% natural tellurium by weight. This is so we can begin our search for neutrinoless double beta decay, a form of radioactive decay which - if it exists - would have transformative effects both in our understanding of neutrinos and the Universe more broadly. I will talk about the expected sensitivity of SNO+ for this neutrinoless double beta decay search.

 

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Oct2025_snoplus_Bristol_talk.pdf