An example pathway to a fusion power plant system based on lead-lithium breeder: Comparison of the dual-coolant lead-lithium (DCLL) blanket with the helium-cooled lead-lithium (HCLL) concept as initial step

The pathway to the successful development of an attractive power plant implies a successful strategy in developing a number of key fusion systems forming part of the power plant. Here, an example strategy and pathway in developing a blanket system based on the lead-lithium alloy breeder is described as an illustration. A historical perspective of the development of the various lead-lithium based blankets is summarized and a thorough description of the key issues driving the blanket concept assessment is provided. A comprehensive assessment of the helium-cooled lead-lithium (HCLL) and dual-coolant lead-lithium (DCLL) blanket concepts is presented in the context of this development pathway and in helping guide the choice of the initial concept to be tested in ITER as part of an overall progressive development strategy.