Measurement and Analysis of Neutron and Photon Flux Spectra Inside a Tungsten Block Irradiated with 14-MeV Neutrons

摘要

Tungsten was selected as material for the divertor plates of fusion reactors and is therefore the object of investigations to check the status of different nuclear data libraries for fusion applications. A benchmark was performed by irradiating a W block with 14-MeV neutrons and measuring the induced neutron and photon flux spectra inside the block at four positions. Spectra measured are compared with spectra calculated on the basis of the European Fusion File EFF-2.4, the Fusion Evaluated Nuclear Data Libraries FENDL-1 and FENDL-2 using the Monte Carlo code MCNP-4C. Experiment and calculation are compared in detail and also in C/E-ratios (calculation/experiment) of significant fluence integrals.