LARGE SCINTILLATION COUNTER WITH GOOD ENERGY RESOLUTION

We have constructed a scintillation counter with a useful area 5.1 cm high by 61 cm long, to stop protons up to 160 MeV energy. The energy resolution and the variation of output over the face of the counter have been measured using 160 MeV protons. The percentage peak width is 1.6% (full width at half-maximum) everywhere and the output varies, almost linearly, by 11.5% over the length of the counter and by about 1% over the height. © 1969 The American Institute of Physics.