Author/Authors :
Roth، نويسنده , , J. and Kirschner، نويسنده , , A. and Bohmeyer، نويسنده , , W. and Brezinsek، نويسنده , , S. and Cambe، نويسنده , , A. and Casarotto، نويسنده , , E. and Doerner، نويسنده , , R. and Gauthier، نويسنده , , E. and Federici، نويسنده , , G. and Higashijima، نويسنده , , S. and Hogan، نويسنده , , J. and Kallenbach، نويسنده , , A. and Kubo، نويسنده , , H. and Layet، نويسنده , , J.M. and Nakano، نويسنده , , T. and Philipps، نويسنده , , V. and Pospieszczyk، نويسنده , , A. and Preuss، نويسنده , , R. and Pugno، نويسنده , , R. and Ruggiéri، نويسنده , , R. and Schweer، نويسنده , , B. and Sergienko، نويسنده , , G. and Stamp، نويسنده , , M.، نويسنده ,
Abstract :
In a collaboration of eight experiments the dependence of the chemical erosion yield of carbon on the ion flux, Φ, was established to Φ−0.54 at high ion fluxes. With this flux dependence a comprehensive description for chemical erosion is available as function of energy, temperature and flux. With this description the erosion and re-deposition of carbon in the ITER divertor can be calculated using the ITER steady-state plasma scenario and the ERO code. The resulting gross and net erosion rates during steady-state phase of discharges are compared to previous estimates using a constant erosion yield of 1.5%. The use of the complete parameter dependence results in an order of magnitude lower erosion, and, accordingly, of the T codeposition inventory.
Keywords :
Chemical erosion , ERO-code , ITER , Tritium Inventory , Co-deposition
