IFMIF lithium loop activation and associated operator dose rates

An analysis has been made of the IFMIF lithium loop activation using the time-dependent, activation, transport and deposition code, TRACT (TRansport of ACTivation). Corresponding operator dose rates have also been derived using the neutron and photon transport Monte Carlo code MCNP-4C, enabling an assessment of operator exposure, both during IFMIF operation and for times up to 1 year after operation has halted. The dose rates were obtained for specific configurations of loop geometry. Where comparisons can be made, these results agree very well with those of an earlier preliminary investigation.