Speaker
Shengchao Li
(Westlake University)
Description
Low-energy calibration of keV-scale nuclear recoils near detector threshold is a shared and critical requirement across CE$\nu$NS experiments. In XENONnT, it underpins two key physics goals: the measurement of solar $^8$B neutrinos via CE$\nu$NS, and searches for light dark matter. In this talk, we will present the first Yttrium-Beryllium photoneutron-source calibration campaign in the XENONnT experiment. Using nuclear-recoil events induced by $152\,\mathrm{keV}$ neutrons, we extract the scintillation and ionization yields of liquid xenon at the electric field relevant to the science data-taking period. The talk will also discuss the source design, detector simulation, and analysis strategy.
Author
Shengchao Li
(Westlake University)