# Production and Properties of the Liquid Scintillators used in the Stereo Reactor Neutrino Experiment

## TL;DR

This paper discusses the development, properties, and performance of Gd-loaded liquid scintillators used in the Stereo reactor neutrino experiment, focusing on their transparency, light output, and pulse shape discrimination.

## Contribution

It reports on the development and characterization of liquid scintillators optimized for neutrino detection in the Stereo experiment.

## Key findings

- Scintillators achieved high transparency and light yield.
- Effective pulse shape discrimination capabilities were demonstrated.
- Gd-loading was successfully incorporated without compromising scintillator properties.

## Abstract

The electron antineutrino spectrum in the Stereo reactor experiment (ILL Grenoble) is measured via the inverse beta decay signals in an organic liquid scintillator. The six target cells of the Stereo detector are filled with about 1800 litres of Gd-loaded liquid scintillator optimised for the requirements of the experiment. These target cells are surrounded by similar cells containing liquid scintillator without the Gd-loading. The development and characteristics of these scintillators are reported. In particular, the transparency, light production and pulse shape discrimination capabilities of the organic liquids are discussed.