The Japanese fusion program is based on the 3rd phase basic program of fusion research and development enacted in June 1992. The main objectives of the program are to achieve the self-ignition condition and to produce a long-burning plasma by constructing a fusion experimental reactor, which corresponds to ITER at present. In addition, the program aims at developing the basic fusion technology needed for constructing the prototype fusion reactor. Much effort is devoted to the ITER project to achieve the above-mentioned objectives.

Most of the technologies needed for constructing a fusion reactor will be developed during the engineering design activity, the construction, operation and shutdown of ITER. Fusion material usable under 100dpa, some safety issues, cost-saving technology and some other technologies will remain to be solved.

Next-step fusion research should be directed to the study how a commercial fusion reactor could become less expensive and environmentally safer, on the basis of plasma physics and technology established in the ITER project.