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One of two magnetic focusing horns used in the beamline at Fermilab that produces intense neutrino beams for MINERvA and other neutrino experiments.

For the first time, particle physicists have been able to precisely measure the proton’s size and structure using neutrinos with data gathered from thousands of neutrino-hydrogen scattering events collected by MINERvA, a particle physics experiment at the U.S. Department of Energy’s Fermi National Accelerator Laboratory.

A mile underground in South Dakota, construction crews have worked diligently to carve out an extensive network of caverns and tunnels that one day will house a huge neutrino experiment. Their efforts have paid off: With almost 400,000 tons of rock extracted from the earth, the excavation has reached the halfway point.

A new 20,000-pound particle detection system built for a neutrino experiment will be transported 3 miles across the Fermilab campus today. About the size of a small house, it will be the heart of the Short-Baseline Near Detector at Fermilab.

The U.S. Department of Energy allocated funds to its 17 national laboratories from the Inflation Reduction Act to mitigate the rise of project costs as a result of inflation. Fermilab will spend the funding on the lab’s on-going construction projects. This will allow the lab’s major projects to uphold their schedules and keep their commitment to international collaborators.

Scientists successfully used a new technique to cool a particle beam and make it denser. The new method may enable future experiments to create more particle collisions. Denser particle beams provide researchers a better chance of exploring rare physics phenomena that help us understand our universe.

Artist rendering of Fermilab campus

The Department of Energy has formally approved the start of full construction for the PIP-II project, an upgrade to the Fermilab accelerator complex that includes a new linear accelerator. PIP-II is an essential enhancement that will power the world’s most intense high-energy neutrino beam. It is the first particle accelerator built in the United States with significant contributions from international partners.