Troubled U.S. Neutrino Project Faces Uncertain Future–and Fresh Opportunities
Blasting and boring through a warren of tunnels in the abandoned Homestake Gold Mine in South Dakota, engineers are preparing for the installation of the Deep Underground Neutrino Experiment , the U.S.’s latest, greatest major particle physics project. But things are not proceeding as planned: construction-related setbacks have delayed DUNE’s full-scale debut from sometime later this decade to, at best, the mid-2030s.
Now as particle physicists gather for Snowmass, a process with periodic meetings for thrashing out the coming decade’s research priorities in the U.S., some have raised the specter that LBNF/DUNE could come second, or even third, in scoring some of its motivating science objectives. “How do we change the way that we’re thinking about DUNE to do those goals and more, or do those even better?” asks Jonathan Asaadi, an experimentalist at the University of Texas Arlington.
Yet Asaadi and many others emphasize that these experiments are collaborators as much as competitors. “We’re all kind of rooting for each other and rooting against each other at the same time,” says Mark Messier, an experimentalist who worked on Super-K as a graduate student and now works on DUNE and other neutrino detectors.
Sunk-Cost Fallacy or Golden Opportunity? As large-scale projects like LBNF/DUNE have ramped up over the last five years, Congress has increased the DOE’s overall budget for high-energy physics by nearly 30 percent. Funding for core research at universities as well as for R&D on new accelerator and detector technologies, however, has declined. The new phasing of LBNF/DUNE aims to rebalance the budget, said a spokesperson for the DOE.
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