From 16 to 23 September 2026, measurements were carried out at the JSI TRIGA reactor together with researchers from EPFL, using innovative neutron detectors based on neutron-sensitive scintillators and optical fibres, designed to measure both thermal and fast neutron flux. Measurements were performed both in the reactor core, as well as in the KATANA primary water activation loop. In addition to testing of the detectors themselves, the aim was to evaluate the rate of radiation-induced degradation of the scintillators and the increase in attenuation in the optical fibres.
