Helium Cooled High- and Medium-Fluxtest-Modules for the International-Fusion-Material-Irradiation-Facility

The International-Fusion-Material-Irradiation-Facility (IFMIF) is an accelerator driven neutron source to create a displacement rate per full power year of more than 20 dpa/fpy in materials e. g. like steel within the High-Flux-Test-Module (HFTM) with a volume of 0.5 liters. It also provides a helium and hydrogen production rate related to the dpa rate comparable to values to be expected in a DEMO Fusion reactor. In addition a Medium-Flux-Test-Module (MFTM) is dedicated to in situ creep-fatigue tests. The HFTM consists of a container which houses 12 rigs. The rigs have the same outer geometry. They house the miniaturized specimens to be irradiated. All rigs have the same outer dimensions and a uniform heater and temperature equipment, so that they can be flexibly arranged at each position in the container. This design was consequently optimised towards "maximum space for the specimens", so that the number of specimen could be increased by 25 to 30%. A helium loop ITHEX is taken into operation for validating the CFD code and turbulence model used for the simulation calculations for thermo hydraulic analyses of the helium cooling. For the Medium Flux Test Module a jet cooling was suggested with an improved temperature control. Experiments for validating the design are under preparation. For preparing the design integration of Target and Test Cell a complete set of drawings was pt together with CATIA. Coupling of CATIA and the neutronic Monte Carlo code McDeLicious was successfully tested. McDeLicious was also coupled to a deterministic SN code for shielding calculations