Abstract
Two experiments were carried out and analysed in order to test tools used for the nuclear design of fusion devices. Neutron and photon flux spectra were measured in a thick tungsten assembly during irradiation with D-T neutrons. They were analysed with the Monte Carlo transport code MCNP-4C using nuclear data of the libraries FENDL-2, EFF-2.4 and JENDL-3.3. Small pieces of tungsten were irradiated with D-T neutrons, and the neutron-induced activities measured after the irradiation, were analysed with the inventory code FISPACT using data of the libraries EAF-2003 and FENDL/A-2. Deviations of experimental from calculated results show that an improvement of the tungsten data base is required. Tungsten is widely proposed for use in plasma facing components of future fusion devices.
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