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Published June 2020 | public
Journal Article

Neutron-Induced Radiation Damage in LYSO, BaF₂ and PWO Crystals


One crucial issue for the application of scintillation crystals in future high-energy physics experiments is radiation damage in a severe radiation environment, such as the high luminosity large hadron collider. While radiation damage induced by ionization dose in inorganic scintillators is well understood, investigations are ongoing to understand radiation damage induced by hadrons, including both charged hadrons and neutrons. Aiming at understanding neutron-induced radiation damage in fast inorganic scintillators, lutetium yttrium oxyorthosilicate (LYSO)/lutetium fine silicate (LFS), BaF₂, and PWO crystals were irradiated at Los Alamos Neutron Science Center by a combination of particles, including neutrons, protons, and γ-rays. The results indicate that LYSO/LFS and BaF₂ crystal plates are radiation hard up to a 1-MeV equivalent neutrons fluence of 9×10¹⁵ equivalent neutron (n_(eq))/cm², but not PWO, and the neutron-induced radiation damage in LYSO crystals is a factor of ten less than protons.

Additional Information

© 2020 IEEE. Manuscript received February 12, 2020; revised March 23, 2020; accepted April 15, 2020. Date of publication April 21, 2020; date of current version June 19, 2020. This work was supported by the U.S. Department of Energy under Grant DE-SC0011925 and Grant DE-AC52-06NA25396. The authors would like to thank Prof. Ke-Xun Sun of the University of Nevada, Las Vegas, for sharing the sample holders used in experiments 7332 and 7638.

Additional details

August 19, 2023
October 20, 2023