Development of the Gadolinium-loaded Liquid Scintillator Detector

In order to measure neutrino oscillation parameter θ13, gadolinium-loaded liquid scintillator is used as a neutrino target. The recipe of liquid scintillator is determined by optical and physical requirements as well as safety considerations. We develop a liquid scintillator with high flash point, easy availability and low toxicity using domestically produced linear alkyl benzene for the detection of reactor neutrino. For synthesis of gadolinium compound using carboxylic acid, we use a neutralization chemical reaction process. The gadolinium-loaded liquid scintillator dissolved in linear alkyl benzene has a long attenuation length and high light output.