Timing characterization and coincidence measurements with C7LYC n/𝛾 scintillators*

Fast-neutron detection and spectroscopy is important for both basic and applied Nuclear Science. Inorganic 7Li-enriched Cs27LiYCl6:Ce (C7LYC) scintillation detectors are an emerging technology that provide unprecedented (≈10%) energy resolution for fast neutrons in the few MeV range, obtained through the 35Cl(n,p) reaction. Additionally, the scintillators are sensitive to gamma rays, having an efficiency and energy resolution similar to NaI. Superior pulse-shape discrimination properties enable extremely clean identification of neutron and gamma events. Coincidence measurements using both sources and nuclear reactions generated with a 5.5-MV Van de Graaff accelerator are being carried out at UMass Lowell to further explore their potential. An overview of C7LYC digital pulse-shape analysis techniques and measurements characterizing coincident timing between multiple detectors will be presented.