News

Scientists of the Fermilab experiment MicroBooNE have published the results of a search for a type of hidden neutrino — much heavier than Standard Model neutrinos — that could be produced by Fermilab’s accelerators. These heavy neutrinos are expected to have longer travel times to the MicroBooNE detector than the ordinary neutrinos. This search is the first of its kind performed in a liquid-argon time projection chamber, a type of particle detector. MicroBooNE scientists have used their data to publish constraints on the existence of such heavy neutrinos.

In an educational turning of the tables, first- through fifth-graders evaluated Fermilab scientists’ abilities to illuminate and educate at their school’s first reverse science fair. Three competing groups of scientists demoed neutrino detection, muon precession and particle acceleration in fun, accessible ways, and the elementary school students got to decide who received the blue ribbon.

Fermilab has lost one of its giants. Award-winning engineer and physicist Alvin Tollestrup, who played an instrumental role in developing the Tevatron as the world’s leading high-energy physics accelerator at Fermi National Accelerator Laboratory and founding member of the Collider Detector at Fermilab collaboration, died on Feb. 9 of cancer. He was 95.

There are a lot of things scientists don’t know about dark matter: Can we catch it in a detector? Can we make it in a lab? What kinds of particles is it made of? Is it made of more than one kind of particle? Is it even made of particles at all? Still, although scientists have yet to find the spooky stuff, they aren’t completely in the dark.

The publication of the Technical Design Report is a major milestone for the construction of the Deep Underground Neutrino Experiment, an international mega-science project hosted by Fermilab. It lays out in great detail the scientific goals as well as the technical components of the gigantic particle detectors of the experiment.

For the first time, scientists have observed muon ionization cooling — a major step toward the realization of the muon collider. If built, a future muon collider could provide 10 times the discovery reach of CERN’s Large Hadron Collider.

To some degree, scientists on all of today’s particle physics experiments share a common challenge: How can they pick out the evidence they are looking for from the overwhelming abundance of all the other stuff in the universe getting in their way? Physicists refer to that stuff — the unwelcome clamor of gamma rays, cosmic rays and radiation crowding particle detectors — as background. They deal with background in their experiments in two ways: by reducing it and by rejecting it.

This year’s events will feature the Great Neutrino Hunt, the Mr. Freeze Cryogenics Show, live physics demonstrations, a physics carnival developed and presented by local high school students, tours of the Linear Accelerator Gallery and the Muon g-2 experiment, and a driving tour of the site.

Representatives from UK Research and Innovation and the U.S. Department of Energy signed an agreement that outlines £65 million worth of contributions that UK research institutions and scientists will make to the international Deep Underground Neutrino Experiment and related projects hosted by Fermilab.

The USCMS collaboration has received approval from the Department of Energy to move forward with final planning for upgrades to the giant CMS particle detector at the Large Hadron Collider. The upgrades will enable it to take clearer, more precise images of particle events emerging from the upcoming High-Luminosity LHC, whose collision rate will get a 10-fold boost compared to the collider’s design value when it comes online in 2027.