Abstract
Three-dimensional neutronics calculations have been performed to determine the detailed spatial distribution of the nuclear parameters in the divertor cassettes used in ITER. These parameters included power density, atomic displacement and helium production. The largest heating and damage occurs in the dome which has full view of the plasma. The power density in the tungsten plasma facing material at the dome is 16.4 W/cm/sup 3/. The total nuclear heating in the 60 divertor cassettes is 101.6 MW with the major contributors being the dome, vertical targets, and wings.
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