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DEMO (DEMOnstration Power Plant) is a proposed nuclear fusion power plant that is intended to build upon the ITER experimental nuclear fusion reactor. The objectives of DEMO are usually understood to lie somewhere between those of ITER and a "first of a kind" commercial station. While there is no clear international consensus on exact parameters or scope, the following parameters are often used as a baseline for design studies: DEMO should produce at least 2 gigawatts of fusion power on a continuous basis, and it should produce 25 times as much power required for breakeven. DEMO's design of 2 to 4 gigawatts of thermal output will be on the scale of a modern electric power plant. To achieve its goals, DEMO must have linear dimensions about 15% larger than ITER and a plasma density about 30% greater than ITER. As a prototype commercial fusion reactor, DEMO could make fusion energy available by 2033. Subsequent commercial fusion reactors could be built for nearly a quarter of the cost of DEMO if things go according to plan. ==Timeline== The following timetable was presented at the IAEA Fusion Energy Conference in 2004 by Christopher Llewellyn Smith.〔 These dates are conceptual and as such are subject to change. *Conceptual design is to be complete by 2017 *Engineering design is to be complete by 2024 *The first construction phase is to last from 2024 to 2033 *The first phase of operation is to last from 2033 to 2038 *The plant is then to be expanded/updated *The second phase of operation is to last from 2040 onwards PROTO is a beyond-DEMO experiment, part of European Commission long-term strategy for research of fusion energy. PROTO would act as a prototype power station, taking in any remaining technology refinements, and demonstrating electricity generation on a commercial basis. It is only expected after DEMO, meaning a post-2050 timeline, and may or may not be a second part of DEMO/PROTO experiment. This might possibly make PROTO the first commercial nuclear fusion power plant in the world. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「DEMO」の詳細全文を読む スポンサード リンク
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