The STEREO Experiment
N. Allemandou, H. Almaz\'an, P. del Amo Sanchez, L. Bernard, C., Bernard, A. Blanchet, A. Bonhomme, G. Bosson, O. Bourrion, J. Bouvier, C., Buck, V. Caillot, M. Chala, P. Champion, P. Charon, A. Collin, P. Contrepois,, G. Coulloux, B. Desbri\`eres, G. Deleglise, W. El Kanawati
TL;DR
The STEREO experiment is a short baseline reactor neutrino study designed to test the sterile neutrino hypothesis by measuring antineutrino flux at 10 meters from a nuclear reactor, focusing on background suppression and detector performance.
Contribution
This paper details the design, site setup, and performance of the STEREO detector, providing new insights into background mitigation and energy reconstruction at very short baselines.
Findings
Effective background suppression achieved
Accurate energy reconstruction demonstrated
Detector response characterized successfully
Abstract
The STEREO experiment is a very short baseline reactor antineutrino experiment aiming at testing the hypothesis of light sterile neutrinos as an explanation of the deficit of the observed neutrino interaction rate with respect to the predicted rate, known as the Reactor Antineutrino Anomaly. The detector center is located 10 m away from the compact, highly U enriched core of the research nuclear reactor of the Institut Laue Langevin in Grenoble, France. This paper describes the STEREO site, the detector components and associated shielding designed to suppress the external sources of background which were characterized on site. It reports the performances in terms of detector response and energy reconstruction.
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