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Public gets rare glimpse of General Atomics' giant magnets
Public gets rare glimpse of General Atomics' giant magnets
General Atomics (San Diego) opened a facility making the world's largest magnets for rare public tours on 2 October in honour of the nationwide Manufacturing Day in the US.
The factory in Poway, California, is making seven giant magnet modules, each weighing approximately 110 metric tons, for the $20 billion International Thermonuclear Experimental Reactor, or ITER, being built in France.
Each magnet is made of 560 turns of superconducting cables made from stands of a rare niobium-tin alloy wound around a tube that will carry liquid helium. In operation, the magnets will be cooled to -269°C while 50,000 amps of power are applied.
Their role in the ITER Project is to contain a fusion reaction — literally trapping the sun in a bottle.
Russia ships last batch of toroidal field conductor
Russia ships last batch of toroidal field conductor
On 28 September, the last lengths of Russian-procured conductor for ITER's toroidal field magnets were loaded onto trailers at the Kurchatov Institute in Moscow for shipment to the European winding facility in La Spezia, Italy.
Through a Procurement Arrangement signed in February 2008 with the ITER Organization, the Russian Domestic Agency took on the responsibility of procuring 20 percent of toroidal field conductor lengths (28 lengths, including two dummies), plus testing and transport to the European winding facility.
The building blocks of the ITER magnets are high-performance, internally cooled superconductors called CICC (cable-in-conduit) conductors, made up of bundled superconducting and copper strands that are cabled together and contained in a structural steel jacket. For the toroidal field magnets, the completed conductor will be wound into D-shaped "double pancakes," inserted into the grooves of a radial plate to hold it in place, stacked to form winding "packs," and finally contained in steel cases to form the completed coil.
The shipment of three final lengths procured in Russia (pictured) completes Russia's longest-lead procurement campaign for ITER.