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P-ONE: Pacific Ocean Neutrino Experiment

Towards a new neutrino telescope in the Pacific Ocean

The Pacific Ocean Neutrino Experiment (P-ONE) is an initiative towards constructing a multi-cubic-kilometre neutrino telescope in the Pacific Ocean to expand our observable window of the Universe to the highest energies. It was started by the astroparticle physicist Elisa Resconi from the Technical University of Munich in 2017. Meanwhile, it developed into an international collaboration supported by universities and research institutions in Canada, USA and Germany. The most important partner is Ocean Networks Canada (ONC), a University of Victoria initiative, that operates in the Pacific Ocean the most extensive oceanographic infrastructure in the world. The NEPTUNE ocean observatory with a 800 km loop of fibre-optic cables will provide power and data connection for the new neutrino telescope. Its node in the Cascadia Basin, at a depth of 2,660 meter, is selected to host P-ONE. The site is being monitored since 2018 by two pathfinder experiments called STRAW. They have contributed to evaluating the site as optically and environmentally ideally suited for a large scale neutrino telescope. Work is currently underway to prepare the first prototype line for P-ONE to be deployed by ONC in 2023.