Originally proposed at a summit meeting between the USA and the USSR in 1985, the purpose of ITER project is to build a toroidal device called a tokamak for magnetic confinement fusion to specifically demonstrate thermonuclear ignition and study the physics of burning plasma. The initial phase of this project was jointly funded by four parties: Japan, the European community, the Russian Federation and the United States. In July of 1992, ITER engineering design activities (ITER EDA) were established to provide a fully integrated engineering design as well as technical data for future decisions on the construction of the ITER. To meet the objectives, the linear dimensions of ITER will be 2-3 times bigger than the largest existing tokamaks. According to the 1998 design, the major parameters of the ITER are as follows: total fusion power of 1.5G W, a plasma inductive burn time of 1000 s, a plasma major radius of 8.1 m, a plasma minor radius of 2.8 m, a toroidal magnetic field at the plasma center of 5.7 T, and an auxiliary heating power by neutral beam injection of 100 MW.