The biggest little detectors

The ProtoDUNE detectors for the Deep Underground Neutrino Experiment are behemoths in their own right. In one sense, the two ProtoDUNE detectors are small. As prototypes of the much larger planned Deep Underground Neutrino Experiment, they are only representative slices, each measuring about 1 percent of the size of the final detector. But in all other ways, the ProtoDUNE detectors are simply massive. Once they are complete later this year, these two test detectors will be larger than any detect...