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After 31 days on the sea, the freighter Lyra safely moored at the docks in Fos-sur Mer late Friday, 31 May. Precisely one month before, she had left Shanghai, China, with three large wooden boxes on board containing 737 metres of spooled copper conductor divided into three pieces. On Monday 3 June, the cargo passed customs and accomplished the final leg of its journey to be delivered at the ���ߺ��� worksite, where it is now stored to await the deployment of the copper conductor during tests in the on-site winding facility for ���ߺ���’s large poloidal field coils. 

The lengths of dummy conductor were produced by the Institute of Plasma Physics (ASIPP) in Hefei. According to the Procurement Arrangement signed between the Chinese Domestic Agency and the ���ߺ���, China will fabricate 64 conductors for ���ߺ���'s poloidal field coils, including four dummy conductors. Russia and Europe will also contribute to poloidal field conductor procurement, which represents 1, 224 tons of superconducting wire alone. 

The poloidal field conductors for ���ߺ��� will be made out of niobium-titanium (NbTi), an alloy that is too precious to be used for testing purposes. The dummy conductor delivered this week is composed of copper strands inserted into a stainless steel jacket (AISI 316LN). It will be used for validating the fabrication process of ���ߺ��� poloidal field coil number 5 (PF5). 

“Each poloidal field coil is manufactured in a process that begins with the conductor spools that will be delivered on site,” explains Piergiorgio Aprili from the European Domestic Agency Fusion for Energy: “First, a so-called double pancake is wound. This is then vacuum-impregnated, stacked to form coils (which are also vacuum impregnated), and finally the completed coils are clamped and covered. Once the qualification of the process and of the tooling is successfully completed, the production of the real poloidal field coils can start.”

BACKGROUND TO THE PRESS RELEASE 

���ߺ���, currently under construction in the south of France, is designed to demonstrate the scientific and technological feasibility of fusion power. In an unprecedented international effort, seven partners—China, the European Union, India, Japan, Korea, Russia and the United States—have pooled their financial and scientific resources to take fusion energy to the threshold of industrial exploitation. The completion of the construction is expected in 2020. 

The press release and images can be downloaded here:

More information on the ���ߺ��� project can be found at: www.iter.org

CONTACT

Michel Claessens 
michel.claessens@iter.org 
+33-(0)6.14.16.41.75