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Design and Fabrication of Liquid Scintillator Counter

Pacific Northwest National Laboratory (PNNL) is home to one of the few underground laboratories specializing in ultra-low background measurements. Built at a depth of 35-meters water-equivalent, the underground laboratory shields against cosmic-ray by-products, including but not limited to, protons, neutrons, and muons. One of the functions of the facility is to measure ultra-low concentrations of radioactive isotopes.