CHARGED-PARTICLE IDENTIFICATION INCLUDING PIONS BY PULSE-SHAPE DISCRIMINATION WITH AN NE213 LIQUID SCINTILLATOR

Particles emitted from spallation reactions induced by protons having GeV energies were measured with an NE213 liquid scintillator, 12.7 cm in diameter and 12.7 cm thick. The pulse-shape discrimination (PSD);wa s carried out for charged particle identification by the two-gate inte gration method. Pions having energies up to 60 MeV were clearly discri minated from protons and electrons. On the contrary, pions with higher energies could not be identified since they escaped from the detector . The advantage of PSD for charged particle identification is that the re is no requirement for a Delta E detector in the measurements. (C) 1 995 American Institute of Physics.