High-energy neutron characterization of scintillator and solid-state detectors for lost fast ions measurements in JT-60SA and ITER

In JT-60SA [2] a high neutron flux on the first wall and on the FILD of up to 1012 s -1 cm-2 coming from D -D fusion reaction is foreseen. Therefore, assessing the neutron response of the active component employed in the detector is vital for FILD operation on JT-60SA as well as in other future fusion devices. In order to assess the neutron sensitivity of the scintillator employed in the FILD, called TG-Green [3], to 2.5 MeV and 14.1 MeV a specimen of said scintillator has been tested at the Frascati Neutron Generator (FNG) [4]. 1 Two solid state detectors, a Single-crystal Diamond Detector (SDD) and a Silicon Carbide Detector (Sic), were also analyzed and identified as suitable alternatives for FILD operation.