DEMO

from Wikipedia, the free encyclopedia

DEMO (DEMOnstration Power Plant) could be the follow-up project to the ITER experimental nuclear fusion reactor that is currently under construction .

Planning

Structure diagram of the DEMO

DEMO would serve to develop and test technologies, physical operating areas and control algorithms and is intended to demonstrate a so-called "closed fuel cycle", ie the incubation of the tritium that is constantly required in the reactor blanket . As a demonstration power plant, DEMO would contain all the components for electricity generation and, with 2 to 4 gigawatts of fusion power, feed 1 to 1.5 gigawatts into the grid from 2040 or 2050 at the earliest. Due to the long delays in ITER (ignition of a DT plasma now not planned until 2035), the schedule is likely to be pushed back accordingly. Development goals for DEMO are also sufficient availability and the most compact dimensions possible. As a research project, DEMO will not yet produce electricity economically, but it should enable an estimate of the costs of commercial power plants. To operate economically, commercial fusion power plants would likely have to be larger than DEMO in the last quarter of this century.

According to one approach, the concrete planning and construction of DEMO would be based on around ten years of plasma research with ITER, which Template: future / in 3 yearsshould begin in 2025 . Another approach (K-DEMO) was based on unconfirmed but more conservative assumptions for the achievable parameters in favor of the design after only two years of ITER operation.

It is also not yet certain whether a permanently burning plasma is economically feasible with the tokamak principle; DEMO could also be a successor to the Wendelstein 7-X stellarator .

Follow-up project PROTO

PROTO is a proposed nuclear fusion reactor , but it cannot go into construction before 2050 and would be a follow-up project to the DEMO project. But there are also considerations to combine PROTO and DEMO.

Individual evidence

  1. ^ ITER: updated research plan, scilogs.spektrum.de, October 11, 2018
  2. ^ D. Maisonnier: European DEMO design and maintenance strategy. Fusion Engineering and Design Vol. 83 (2008) pp. 858-864
  3. ↑ EFDA : DEMO ( Memento of the original from February 1, 2014 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. (Entry in the glossary on the EFDA website). @1@ 2Template: Webachiv / IABot / www.efda.org
  4. ↑ EFDA: EFDA DEMO Meeting: Where does fusion research stand? ( Memento of the original from February 1, 2014 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. , Entry on December 17th, 2009 about the conference in Garching on 29./30. September. @1@ 2Template: Webachiv / IABot / www.efda.org
  5. ↑ EFDA (renamed EUROfusion in 2014 ): Bridging the gap , February 22, 2013.
  6. ↑ EFDA (renamed EUROfusion in 2014 ): EFDA sets up a Power Plant Physics & Technology Department (PPP & T), December 11, 2010.
  7. ↑ The roadmap to magnetic confinement fusion, Damian Hampshire
  8. ↑ Beyond ITER . (PDF). August 18, 2008.
  9. ↑ Fusion Illusions . Michael Dittmar , Nuclear Monitor Issue: # 698, Number: 5997. 27 November 2009.

Web links