Integration of the Modular Dual Coolant Pb-17li Blanket Concept in the Aries-cs Power Plant

A modular DCLL blanket is selected as the reference concept in the ARIES-CS power plant study. This concept is characterized by the following features: 1. Eutectic lead lithium alloy Pb-17Li serving as breeder and coolant (“self-cooled breeding zone”); 2. Helium-cooled FW and blanket structure made of the MF82H Reduced Activation Ferritic Steel (RAFS); 3. Flow channel inserts (FCI) made of SiCcomposites arranged between the flowing liquid metal and the ferritic steel duct walls, serving as electrical and thermal insulator; 4. High outlet temperature of the liquid metal breeder/coolant (~700 oC), allowing the use of a Brayton cycle power conversion system. In the past, DCLL blankets with self-cooled Pb-17Li breeding zones were proposed in the frame of the ARIESST (“Spherical Tokomak”) study, and were further developed in the EU Power Plant Conceptual Study (PPCS). 3 The DCLL blanket became also the reference concept in the US-ITER Test Blanket Module (TBM) program.