Speakers
Description
STEREO is a coarsely segmented, Gd-loaded liquid scintillator calorimeter studying antineutrinos produced by the compact reactor core, highly enriched in $^{235}U$, of the Institut Laue-Langevin in Grenoble (France). The experiment has been designed to test the light sterile neutrino explanation of the Reactor Antineutrino Anomaly (RAA) by comparing the neutrino energy spectra recorded by its six detector cells, between 9 and 11 m away from the reactor core. Using data collected since 2016, STEREO excludes a large fraction of the RAA favoured region in the $\Delta m^2_{41}−\sin^2(2\theta_{ee})$ parameter space, including the best-fit point.
In this poster, we discuss the analysis methods and data samples used to achieve a ~1% control of the energy scale. These include radioactive sources, neutron captures following cosmic rays, and cosmogenic isotopes ($^{12}B$). We comment on the impact on the measured antineutrino energy spectrum.
Mini-abstract
The STEREO experiment achieves a high precision on the energy scale using extensive calibrations.
| Experiment/Collaboration | STEREO |
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