Fusion In Our Future?
Tuesday saw the official agreement between a consortium of countries to construct a fully functional fusion reactor, at a cost of 12.8 billion dollars, or thereabouts. The project is called the International Thermonuclear Experimental Reactor, ITER. It is indeed a huge undertaking, and we could end up with nothing to show for it, but on the other hand it would be a miniscule price to pay if we were to get the scheme off the ground. The promise of an abundant source of energy that is (supposedly) less polluting and safer to run than fission and does not add to our upcoming woes caused by climate change is too tantalizing not to pursue.
In case you’re wondering, the image to the right (click for larger) is a schematic representation of the 500MW reactor. It is of the classic “Tokamak†type, in which there is a torus (doughnut) shaped region where the plasma will be magnetically contained, at a temperature of 100 million K. To learn more about fusion, you can go to the article from the UKAEA here, and the article on ITER here at their website. From the latter, you can learn about the specific scientific objectives of ITER: