AP-3-1-INV

Two Decades of High-Tc Superconducting Magnet Systems Produced by HTS-110

16:15-16:45 28/11/2023

*Donald Pooke, Mike Fee, Taotao Huang, and Vadim Chamritski
HTS-110 LP 1B Quadrant Drive, Waiwhetu, Lower Hutt 5010, New Zealand
Abstract Body

The growing interest in very high-field High-Tc Superconducting (HTS) magnets for fusion, combined with active development in the electrified transport, particularly for aircraft as a pathway to lower carbon emissions, are proving strong drivers for the expansion of HTS development. Concerns over the long-term supply of liquid helium for conventional low-Tc magnets is also spurring renewed interest in HTS magnets across a broad range of applications, and with an evolution towards high-field capability. Here we review the development of commercial HTS magnets over the past two decades at HTS-110, demonstrating several application areas benefitting from the high operating temperatures relative to LTS solutions. High-throughput R&D and QA tools for magnetics industries are enabled by sustained high ramp rates, while compact liquid cryogen-free Nuclear Magnetic Resonance magnets also illustrate that high spatial and temporal uniformity can be achieved despite the presence of magnetisation currents and lack of persistent-mode operation. Large optical access with compact system envelopes, along with control of fringe-field profiles through passive shielding, have proven very beneficial attributes for neutron and x-ray beamline sample environment magnets, particularly for polarised neutron research. Recent magnet progress is illustrated by a push to higher field designs; currently an asymmetric 12 T split-pair magnet is in manufacture, and with strong interest towards 20 T-class split-pair magnets, tapping not just the high operating temperature potential of HTS conductors, but also their high-field capability.