Characterization of TFTR shielding penetrations of ITER relevance in D-T neutron field

D-T phase of TFTR began with trace tritium discharges in mid-November 1993. The availability of high D-T fusion neutron yields at TFTR has provided a unique opportunity to characterize tokamak fusion reactor shielding-penetration geometries of relevance to ITER. It was undertaken to characterize neutron energy spectra near three different kinds of penetrations on walls of TFTR test cell. Thirteen foils each were irradiated on seven locations. The saturation activities have been obtained and are discussed with a view to characterizing the neutron energy spectra. Also, unfolded spectra have been utilized to estimate dose equivalents for the same locations. These types of measurements are potentially useful for validating calculational methods and meeting fusion reactor licensing requirements.