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Local

Fermilab breaks ground on new beamline for world’s most advanced neutrino experiment

The U.S. Department of Energy’s Fermi National Accelerator Laboratory on Monday joined with its international partners to break ground on a new beamline that will help scientists learn more about ghostly particles called neutrinos.
The U.S. Department of Energy’s Fermi National Accelerator Laboratory on Monday joined with its international partners to break ground on a new beamline that will help scientists learn more about ghostly particles called neutrinos.

BATAVIA – The U.S. Department of Energy’s Fermi National Accelerator Laboratory on Monday joined with its international partners to break ground on a new beamline that will help scientists learn more about ghostly particles called neutrinos.

The beamline is part of the Long-Baseline Neutrino Facility (LBNF), which will house the Deep Underground Neutrino Experiment (DUNE), an international endeavor to build and operate the world’s most advanced experiment to study neutrinos, according to a news release from Fermilab.

Hosted by Fermilab, LBNF will send trillions of neutrinos 1,300 kilometers (800 miles) through the earth to South Dakota – a journey that requires no tunnel, as neutrinos are rarely stopped by matter, the release stated. On their way, the neutrinos will cross two DUNE particle detectors: one at Fermilab and one a mile underground at the Sanford Underground Research Facility in South Dakota.

DUNE is a truly international experiment, bringing together more than 1,000 scientists from more than 30 countries around the world, the release stated. Monday's ceremony celebrated the start of the site preparation work for the Illinois portion of LBNF. Over the next few years, Fermilab will build a new beamline for its accelerator complex to direct those neutrino particles to South Dakota, and an underground cavern on the Fermilab site to house a multi-component particle detection system.

Collectively that detector area and beamline are known as the LBNF near site, and it’s the final piece of the puzzle that will bring DUNE to life. At the Fermilab site, crews will construct a new beamline that will extract proton particles from Fermilab’s largest accelerator, the Main Injector, and precisely aim them toward the DUNE detector in South Dakota.

As part of the project, crews will also excavate an underground cavern on the Fermilab site that will hold a target hall (where the protons smash into a target to create smaller particles), a decay area (where the beam is filtered until it is almost entirely neutrinos) and a sophisticated particle detector, one designed to characterize the beam so scientists know exactly what they are sending to South Dakota and can predict what should show up on the receiving end, according to the release.

Much of that work will happen over the coming years. The initial work will prepare the site for the beamline, the release stated.

Crews will deliver a clear field for the main construction. The road that runs around the Main Injector will also be re-routed out of the footprint of the future beamline facilities.

When completed, LBNF/DUNE will be the most advanced neutrino experiment ever built, and the largest experiment ever built in the United States. At its peak, construction of LBNF is expected to create almost 2,000 jobs in Illinois and a similar number in South Dakota. The experiment will attract students and young scientists from around the world, helping to foster the next generation of scientists and engineers.

Scientists on DUNE will study the interactions of neutrinos in both detectors, looking to better understand the changes these particles undergo as they travel across the Midwest in the blink of an eye. Scientists have known for some time that neutrinos come in three types, the release stated.

DUNE scientists also will look for the differences in behavior between neutrinos and their antimatter counterparts, antineutrinos, which could give clues as to why the visible universe is dominated by matter, according to the release. In addition, DUNE will watch for neutrinos produced when a star explodes, which could reveal the formation of neutron stars and black holes and will investigate whether protons live forever or eventually decay, the release stated.

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