Abstract
An overview of ITER efforts is presented in this paper in the area of blanket development and ITER test program preparation. The design of ceramic and eutectic options of the driver blanket were developed aimed on a reliable operation and adequate tritium production. With an estimated net tritium breeding ratio of 0.8–0.95 ITER is able to achieve testing fluence goal of 1 MWa/m
2 during 8 years of technology phase operation. The test program was developed to ensure realistic extrapolation to DEMO on the basis of ITER experience. Submodules for the blanket, high heat flux components and material testing are to be inserted in especially designed test ports. Tests are provided for DEMO-relevant blanket design concepts.