LIQUID LITHIUM SELF-COOLED BREEDING BLANKET DESIGN FOR ITER

To meet the technical objectives of the ITER extended performance phas e (EPP) an advanced tritium breeding lithium/vanadium (Li/V) blanket w as developed by two home teams (US and RF). The design is based on the use of liquid Li as coolant and breeder and vanadium alloy (V-Cr-Ti) as structural :material. The first wall is coated with a beryllium pro tection layer. Beryllium is also integrated in the blanket for neutron multiplication and improved shielding. The use of tungsten carbide in the primary shield and in vacuum vessel provides adequate protection for toroidal field coils. A self-healing electrical insulator in the f orm of CaO or AIN coating layer is utilized to reduce MHD pressure dro p in the system. To have a self-consistent ITER design, liquid metal c ooling of the divertor and vacuum vessel is considered as well. (C) 19 98 Elsevier Science S.A. All rights-reserved.