Conductor Qualification and Fabrication for the MACQU Solenoid

Abstract

A solenoid mock-up called MACQU was designed and tested at CEA Saclay to study the quench propagation in a MADMAX like conductor, i.e. a cable-in-conduit conductor (CICC) with copper conduit cooled at 1.8 K with stagnant superfluid helium. Compared with classic CICCs for fusion magnets, the presence of a cable wrapped by a copper tape and inserted in a copper conduit represented new features from the manufacturing point of view that required a R&D program. In this paper the whole process that led to the final conductor designed for the solenoid MACQU, from strand characterization to the fabrication through the R&D and acceptance phases is described.