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Published January 2019 | public
Journal Article

La and La/Ce Doped BaF_2 Crystals for Future HEP Experiments at the Energy and Intensity Frontiers Part I


Because of its fast scintillation component with subnanosecond decay time, BaF_2 crystals are considered as a candidate for ultrafast crystal calorimeters for future high energy physics experiments at the energy and intensity frontiers. Undoped BaF_2 , however, has a slow scintillation component with 600 ns decay time, which causes pile-up. In the part I of this paper, we report investigations on La doping in BaF_2 crystals to suppress the slow component. While typical fast/slow (F/S) ratio observed in undoped BaF_2 is 1/5, La-doped BaF_2 crystals were found to improve this ratio to about 1/1. The overall F/S ratio, however, is considered not sufficient for pile-up suppression.

Additional Information

© 2018 IEEE. Manuscript received October 29, 2018; accepted November 30, 2018. Date of publication December 5, 2018; date of current version January 17, 2019. This work was supported in part by the U.S. Department of Energy, Office of High Energy Physics program under Award DE-SC0011925, in part by the Fundamental Research Funds for the Central Universities of China, in part by the Natural Science Funds of China under Grant 51402332 and Grant 11775120, and in part by the Natural Science Funds of Tianjin under Grant 18JCYBJC17800.

Additional details

August 19, 2023
October 19, 2023