Measurement of proton quenching in a LAB-based liquid scintillator

  • Masheng YangEmail author
  • Zeyuan Yu
  • Jun Cao
  • Xilei Sun
  • Boxiang Yu
  • Guangpeng An
Original Paper



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 \(k_{\text {B}}\) in the model is found to be particle dependent.


To improve the understanding of proton quenching in LS detectors.


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.


The parameter \(k_{\text {B}}\) is extracted by fitting the data to the Birks’ law prediction with careful examination of systematic uncertainties.


The measurement will contribute to the in-depth understanding of the energy nonlinearity in liquid scintillator detectors.


Proton Quenching effect Birks’ law 



This work was supported by National Natural Science Foundation of China (Grant Nos. 11390381 and 11225525).


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Copyright information

© Institute of High Energy Physics, Chinese Academy of Sciences; Nuclear Electronics and Nuclear Detection Society and Springer Nature Singapore Pte Ltd. 2018

Authors and Affiliations

  1. 1.Institute of High Energy PhysicsBeijingChina
  2. 2.University of Chinese Academy of SciencesBeijingChina

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