Work to fill the NOvA far-detector blocks in Ash River, Minn., with scintillator oil began last week. Here, a Wayne Transport truck unloads the scintillator oil that will fill the NOvA far-detector blocks. When a neutrino strikes an atom in the liquid scintillator that fills the 15-kiloton far detector, it releases a burst of charged particles. Scientists can detect these particles and use them to learn about neutrino interactions.

Congressman James Oberstar of Minnesota and Congressman Bill Foster of Illinois today (May 1) are joining officials from the U.S. Department of Energy, Fermi National Accelerator Laboratory and the University of Minnesota to break ground for NOvA, the world’s most advanced neutrino experiment.