Abstract
During the past few years the superconducting properties of mono and multifilamentaryMgB2 wiresand tapes have been improved considerably. However, not much work has yet been done to cablingprocedures that are well known for classical low temperature superconductors, despite the fact thatMgB2 conductors can easily be produced in a round-shape geometry. Nowadays, it is a challenge to fabricateMgB2-based cables suitable, for instance, for magnet technology or power transmission.This paper presents a technique for cable production and studies the transport properties of differentsub-size MgB2 cables, fabricated from mechanically and electrically-stabilized thinMgB2 strands capable of carrying high critical currents. The cables vary in matrix composition and inthe final design. It is shown here that it is possible to construct cables which do not showdegradation for the critical current. Furthermore, the possibility of using a very small twist pitch(∼5 mm) in the cables compared to their outer diameter (∼1 mm) indicates apromising future for MgB2 superconductors.
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