EU R&D on the ITER First Wall

Abstract: This paper presents the last results obtained in the ITER First Wall (FW) development work programme performed in Europe on beryllium (Be), copper (Cu) alloys and 316L(N) stainless steel (SS) joining by Hot Isostatic Pressing (HIPping). It reports first the performances under high heat flux testing of CuCrZr/316L(N) SS mock-ups and compares them with those obtained earlier with CuAl25/316L(N) SS mock-ups. It reports then the results of the last developments done on Be/Cu alloy HIPped joints. In particular it presents the results of high heat flux testing of Be/CuCrZr FW mock-ups and compares them with those obtained earlier with Be/CuAl25 FW mock-ups. It gives the status of on-going thermal fatigue tests of Be/Cu alloy FW mock-ups and presents the result of a neutron irradiation experiment performed on Be/CuAl25 mock-ups. The results obtained so far with FW mock-ups made from CuCrZr alloys have exceeded those obtained earlier with CuAl25 alloys. [Copyright &y& Elsevier]