The IRAC Code System to Calculate Activation and Transmutation in the TIARA Facility

A computer code system IRAC has been updated to calculate nuclide transmutation and induced radioactivity for incident particles of neutron, proton, deuteron, alpha up to 150 MeV, and l2 C, l4 N, l6 O, 20 Ne, 40 Ar up to 500 MeV in arbitrary multi-layer target system of three-dimensional geometry. The system provides four libraries that consist of ACSELA for isotope production cross-sections, DECAYLIB for decay data, GAMMALIB for photon emission data, and MASWPS for atomic mass data. Features and the system performance have been presented. To validate accuracy of the code system, radioactivities of residual isotopes for incident 260-MeV 20 Ne ions on cobalt target were measured by using gamma-spectrometry. Comparison of radioactivity has been shown between calculated results and experimental data for each cooling time.