The Erlangen multidetector neutron facility

The Erlangen multidetector neutron facility is used in investigations of nuclear reactions and scattering processes with polarized neutrons. The dc neutron beam is produced by the $\text{D}\text{(}\text{d}\text{,}\text{n}\text{)}{}^3\text{He}$ reaction in the energy range of E_n = 9–14 MeV. Behind an iron collimator embedded in a concrete shielding, angular distributions are simultaneously measured with 22 scintillation detectors. The overall amplification of the electronics is stabilized by a small readjustment of the photomultiplier voltage of each detector on the high voltage side. The n-γ discrimination of all detectors is controlled on-line and displayed via a personal computer.