Spectral accuracy of multiwire proportional counter neutron detectors in time-of-flight regime

摘要

An experiment is proposed to study the neutron detection depth profile-resulting from the cumulative effect of the gas absorption depth profile and signal detection efficiency-of position-sensitive multiwire proportional counter detectors. The effect of the drift voltage level on the detection efficiency is investigated and a method is proposed to adjust the drift voltage of new detectors to ensure appropriate spectral accuracy.