World-record current in a superconductor29/05/2014
World-record current in a superconductor
In the framework of the High-Luminosity LHC project, experts from the CERN Superconductors team recently obtained a world-record current of 20 kA at 24 K in an electrical transmission line consisting of two 20-metre long cables made of magnesium diboride (MgB2) superconductor. This result makes the technology a viable solution for long-distance power transportation.
The 20-metre long electrical transmission line containing the two 20 kA MgB2cables"The test is an important step in the development of cold electrical power transmission systems based on the use of MgB2," says Amalia Ballarino, head of the Superconductors and Superconducting Devices section at CERN. "The cables and associated technologies were designed, developed and tested at CERN. The superconducting wire is the result of a long R&D effort that started in 2008 between CERN and the manufacturer, Columbus Superconductors in Genova, Italy."
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Courtesy of CERN