Abstract
After establishing that the variation of light collection efficiency along the CsI[Na] crystal axis was negligible, an additional low-energy calibration was performed. The goal of this measurement was to build a library of low-energy events taking place within the CsI[Na] crystal that can be used to define and quantify the acceptance of several different cuts used later in the analysis of the CEνNS search data. Given the minimal difference in the decay times for nuclear and electronic recoils in CsI[Na] at low energies, this calibration was performed using electronic recoils induced by γ interactions instead of relying on a neutron source to induce nuclear recoils. The CsI[Na] detector used for these calibrations was later used for the CEνNS search.
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Scholz, B. (2018). Barium Calibration of the CEνNS Detector. In: First Observation of Coherent Elastic Neutrino-Nucleus Scattering. Springer Theses. Springer, Cham. https://doi.org/10.1007/978-3-319-99747-6_7
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DOI: https://doi.org/10.1007/978-3-319-99747-6_7
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