Fig. 1. Structural design of liquid scintillator detector1. Liquid scintillator, 2. Glass window, 3. Light guide, 4. PMT

Fig. 2. Photos of materials for encapsulating liquid scintillators(a) Quartz glass, (b) Encapsulation container, (c) Liquid scintillator

Fig. 3. Physical photo of experimental measurement device

Fig. 4. (a) Energy spectra of ²²Na and ⁶⁰Co measured by EJ301-Z detector, (b) Energy calibration curve

Fig. 5. Waveforms of neutron and gamma measured by EJ301-Z detector

Fig. 6. Test result charts (a) Energy spectrum of ²⁵²Cf, (b) PSD spectrum of ²⁵²Cf, (c) Two-dimensional energy spectrum vs. PSD of ²⁵²Cf

Fig. 7. Variation curves of FOM values with energy for three liquid scintillator detectors

Fig. 8. Discrimination results of EJ301-Z detector (a) Charge comparison method, (b) Time-of-flight method, (c) Charge comparison method vs. time-of-flight method

Fig. 9. Time-of-flight spectrum with an energy threshold of 50 keV

Fig. 10. Neutron and gamma discrimination results for an energy threshold of 150 keV (a) Charge comparison method, (b) Time-of-flight method