Lithium-loaded liquid scintillator production for the PROSPECT experiment

This work reports the production and characterization of lithium-loaded liquid scintillator(LiLS) for the Precision Reactor Oscillation and Spectrum Experiment (PROSPECT). Fifty-nine 90 liter batches of LiLS (${}^6{\rm Li}$ mass fraction0.082%$\pm$0.001%) were produced and samples from all batches were characterized by measuring their optical absorbance relative to air, light yield relative to a pure liquid scintillatorreference, and pulse shapediscrimination capability. Fifty-seven batches passed the quality assurance criteria and were used for the PROSPECT experiment.