Measurement of proton quenching in a LAB-based liquid scintillator

查看全文 作　　者：Masheng [1,2]Yang;Zeyuan [1]Yu;Jun [1,2]Cao;Xilei [1]Sun;Boxiang [1]Yu;Guangpeng [1]An

机构地区：[1]Institute of High Energy Physics,Beijing 100049,China;[2]University of Chinese Academy of Sciences,Beijing 100049,China

出　　处：《Radiation Detection Technology and Methods》索引2019年第3卷第1期,共6页

基　　金：National Natural Science Foundation of China(Grant Nos.11390381 and 11225525). 摘　　要：Background The linear alkylbenzene has been recently used as the solvent of liquid scintillator by several neutrino experiments.The nonlinear energy response induced by the ionization quenching is critical in this kind of detectors.An empirical model proposed by Birks is commonly used to describe the quenching effect;however,recently,the parameter kB in the model is found to be particle dependent.Purpose To improve the understanding of proton quenching in LS detectors.Methods A 14 MeV D–T compact neutron generator is deployed which can provide recoil protons with kinetic energies ranging from 0.5 to 13 MeV in LS.Results The parameter kB is extracted by fitting the data to the Birks’law prediction with careful examination of systematic uncertainties.Conclusion The measurement will contribute to the in-depth understanding of the energy nonlinearity in liquid scintillator detectors. 关键词：PROTON Quenching effect Birks’law

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Measurement of proton quenching in a LAB-based liquid scintillator

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