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<p>A team from Berkeley Lab worked on installation of the beam window – the cylindrical, ringed object in the middle of the photo – for ProtoDUNE. A particle beam at CERN enters the cryostat wall from the left of the photo, through the middle of the beam window, and then gets injected into the detector volume shown at the right of the photo. The region shown in the photo has since been filled with liquid argon chilled to minus 301 degrees Fahrenheit. (Credit: CERN)</p>

First Particle Tracks Seen in ProtoDUNE: the Prototype for an International Neutrino Experiment

The largest liquid-argon neutrino detector in the world has just recorded its first particle tracks, signaling the start of a new chapter in the story of the international Deep Underground Neutrino Experiment (DUNE). DUNE’s scientific mission is dedicated to unlocking the mysteries of neutrinos, the most abundant (and most mysterious) matter particles in the universe.

Gamma Rays, Watch Out: There’s a New Detector in Town

With funding from an Early Career Laboratory Directed Research and Development (LDRD) award announced last year, NSD’s Heather Crawford and her team of researchers are developing a prototype for an ultrahigh-rate high-purity germanium (HPGe) detector that can count 2 to 5 million gamma rays per second while maintaining high resolution, allowing them to accurately measure the energy spectrum under extreme conditions.