Author/Authors :
Greuner، نويسنده , , H. and Bِswirth، نويسنده , , B. and Boscary، نويسنده , , J. and Chaudhuri، نويسنده , , P. and Schlosser، نويسنده , , J. and Friedrich، نويسنده , , T. and Plankensteiner، نويسنده , , A. and Tivey، نويسنده , , R.، نويسنده ,
Abstract :
Extensive high heat flux cycling testing of pre-series targets was performed in the neutral beam facility GLADIS to establish the industrial process for the manufacturing of 890 targets, which will be needed for the installation of the WENDELSTEIN 7-X divertor. The targets are manufactured of flat tiles of CFC NB31 as plasma facing material bonded by an Active Metal Casting copper interlayer onto a water-cooled CuCrZr structure. Based on the results of the 3D thermo-mechanical FEM analysis of the CFC/Cu interface, an additional set of 17 full-scale pre-series elements including three design variations was manufactured by PLANSEE SE. The insertion of an additional plastically compliant copper interlayer between the cooling structure and the Active Metal Casting interlayer showed the best results. No critical tile detachment was observed during >5000 cycles at 10 MW/m2. These results demonstrated the sufficient life time of the component for the expected heat load in operation.
