Summary
This paper describes the development and characterisation of an improved bundle-barrier PIT Nb₃Sn superconducting wire, jointly developed by CERN and Bruker-EAS for use in the HiLumi LHC project magnets. The introduction of a niobium barrier around the filament bundle significantly reduced degradation of copper resistivity properties during mechanical deformation and heat treatment, whilst achieving higher engineering critical current density than previous PIT wire generations. Comprehensive electro-mechanical testing characterised the wire's performance at cryogenic temperatures and high magnetic fields.
UK applicability
This record is not applicable to Vitagri's Pulse Brain catalogue, which focuses on farming systems, soil health, nutrient density, and human health. The paper concerns high-energy physics instrumentation and superconducting materials science.
Key measures
Critical current density, magnetisation measurements, residual resistivity ratio (RRR) of stabilising copper wire, engineering critical current density, effects of mechanical deformation and heat treatment on wire properties
Outcomes reported
The study characterised the electro-mechanical properties of a newly developed bundle-barrier PIT (powder in tube) Nb₃Sn superconducting wire through critical current, magnetisation, and residual resistivity ratio measurements. The research quantified the effects of filament size on critical current performance and heat treatment cycles on wire properties.
Topic tags
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