Spectrometer equipment for photon spectra measurements in mixed neutron/photon fields

The paper presents the description of spectrometers in the experimental laboratory of the IPPE for measuring, processing and systematizing of gamma-radiation spectra. The complete set includes spectrometers based on stilbene crystal and silicon Si(Li) detector. Spectrometers are used for photon spectra measuring of the mixed neutron/photon radiation radionuclide sources, nuclear reactors and accelerators; for the study of neutron and photon spectra in materials, including benchmark experiments; for the photon spectra measurements in the rooms of nuclear facilities in order to determine the radionuclide contents of the sources and to provide radiation safety.