3-DIMENSIONAL NEUTRONICS ANALYSIS OF THE EUROPEAN HCPB BLANKET TEST MODULE IN ITER

Three-dimensional neutronic calculations were performed to analyse the nuclear and shielding performance of the European helium-cooled pebbl e bed blanket (HCPB) test module in ITER. The neutronic calculations w ere performed with the MCNP Monte Carlo transport code and nuclear dat a from the FENDL-1 nuclear data library. A 9 degrees torus sector mode l of ITER with two identical HCPB blanket test modules in the central outboard blanket port formed the basis of the nuclear analysis. Calcul ations have been performed for both the ITER basic performance phase ( BPP) with a water-cooled shielding blanket and the ITER extended perfo rmance phase (EPP) with a driver breeding blanket. The neutronic perfo rmance of the test blanket module is shown to be largely affected by t he neutronic properties of the ITER blanket modules surrounding the te st blanket port. (C) 1998 Elsevier Science S.A. All rights reserved.