DUNE is the a billion dollar international neutrino experiment in which a beam of neutrinos will be fired from Fermilab, USA to a 10 kton liquid argon detector built 1300 km away in a new underground facility at Homestake, S. Dakota. Construction has already begun but one issue to address is the ability of DUNE to detect low energy non-accelerator events, such as from possible proton decay or astrophysical neutrinos. The project will involve a combination of experimental work to measure and understand the critical low background performance of the DUNE detector components, specifically radon emanation and U/Th issues, plus simulations and analysis to assess the implications of this on the design and science capability for low energy physics. There will be chance for long term attachment (6-12 months) in Chicago at Fermilab. This a rare chance to become integral to work towards the huge DUNE experiment in the US, gaining both hardware and software expertise.