Compact HTS Magnets for Neutron Scattering Sample Environments.

Dr Taotao Huang has recently returned from presenting at the International Conference for Neutron Scattering.

T. Huang, D. Pooke, M. Fee, V. Chamritski


Over the last sixty years neutron scattering has been an indispensable tool for probing the microscopic structure and dynamics over a broad range of length and time scales in condensed matter. One of the most remarkable features of the neutron scattering technique is that the neutron interacts with the atomic magnetic moments as strongly as with the nuclei due to its magnetic moment. In exploring matter in high magnetic fields, neutron scattering has provided fundamental information on the magnetic properties. To take advantage of this feature, these neutron scattering experiments need to be complemented by appropriate sample environments including high field magnets.


Up to now, most high field magnets for neutron scattering still use Low Temperature Superconducting (LTS) conductor. Such magnets typically take the form of split pairs with magnetic field vector in the vertical plane and built with aluminum rings to support the split coil.  Recently, with development of High Temperature Superconducting (HTS) conductors, commercial cryogen-free HTS magnets have become available for many applications. In contrast to a LTS magnet, a cryogen-free HTS magnet has several advantages: compactness, fast ramping rate, low fringe field and low maintenance and operating costs. In addition, HTS magnets also have the potential to achieve much higher fields than conventional superconducting magnets. These advantages make it a preferable candidate for neutron scattering experiments.


HTS-110 has been at the frontier of the commercialization of HTS magnets since 2004. Over the last decade significant progress has been made in the commercialization of HTS magnets, paralleling the improvements in wire performance and quality. In this work we review the development at HTS-110 of HTS magnets for neutron scattering. Some aspects of HTS magnet design specific to the combined requirements of neutron scattering including magnetic field, fringe field and sample and neutron access are described. Future development of HTS magnets for neutron scattering is also discussed.

View Dr Taotao Huangs full presentation HERE


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