Publication

Test results of a large size, forced flow Nb3Sn conductor, based on a design alternative to the cable-in-conduit

Pierluigi Bruzzone, Boris Stepanov, Rainer Wesche, Martin Vogel
2007
Journal paper

Abstract

An R&D program at CRPP investigates the design of large size Nb3Sn conductors, with the aim to improve the effectiveness and hence the cost of large size, force flow conductors. A design based on a solder filled flat cable, by react wind method, is selected for a demonstration prototype, built at CRPP and tested in the SULTAN facility. In the new conductor, the longitudinal strain is similar to the strand intrinsic strain because the cable is heat treated without steel jacket. The transverse load degradation is suppressed thank to effective mechanical support of the strands by the solder matrix. The test in SULTAN includes dc test, ac loss in superimposed dc and ac field and transient field stability. At 48 kA (430 A/mm(2)) and 11.15 T the current sharing temperature is 6.3 K, i.e. the new conductor provides a higher temperature margin and saves about 50% of the Nb3Sn cross section, in comparison to ITER. The transient stability largely fulfils the ITER requirement.

Official source

https://infoscience.epfl.ch/record/120467?ln=en

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Ontological neighbourhood

Electrical engineering

Power engineering: Electric power transmission

Related concepts (36)

Design

A design is a concept of either an object, a process, or a system that is specific and, in most cases, detailed. Design refers to something that is or has been intentionally created by a thinking agent, though it is sometimes used to refer to the nature of something. The verb to design expresses the process of developing a design. In some cases, the direct construction of an object without an explicit prior plan may also be considered to be a design (such as in some artwork and craftwork).

Electrical conductor

In physics and electrical engineering, a conductor is an object or type of material that allows the flow of charge (electric current) in one or more directions. Materials made of metal are common electrical conductors. The flow of negatively charged electrons generates electric current, positively charged holes, and positive or negative ions in some cases. In order for current to flow within a closed electrical circuit, one charged particle does not to travel from the component producing the current (the current source) to those consuming it (the loads).

ITER

ITER (initially the International Thermonuclear Experimental Reactor, iter meaning "the way" or "the path" in Latin) is an international nuclear fusion research and engineering megaproject aimed at creating energy through a fusion process similar to that of the Sun. Upon completion of construction of the main reactor and first plasma, planned for late 2025, it will be the world's largest magnetic confinement plasma physics experiment and the largest experimental tokamak nuclear fusion reactor.

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