Denis Markiewicz examines the test coil for a YBCO superconducting magnet.
In addition to working on magnet projects for the lab, MS&T cooperates with industry and other laboratories on a variety of magnet technology projects. These projects cover the range of analysis, design, materials, component development and testing, coil fabrication, cryogenics, system integration and testing.
Our scientists and engineers are involved in the following special projects and MS&T-built user magnets.
Series Connected Hybrid for the Magnet Lab
In 2006, the National Science Foundation awarded the lab an $11.7 million grant for construction of a cylindrical-bore Series-Connected Hybrid (SCH), for high field nuclear magnetic resonance (NMR), condensed matter physics, biology and chemistry, to be located at the Magnet Labís Tallahassee location.
Series Connected Hybrid for the Helmholtz Centre Berlin
In 2007, the Helmholtz Centre Berlin (then known as the Hahn-Meitner Institute) contracted with the MagLab to build an $8.7-million SCH magnet for neutron scattering experiments.
Series Connected Hybrid for the Spallation Neutron Source
In 2006, the Magnet Lab was granted a design contract to build a split-gap Series-Connected Hybrid magnet for the Spallation Neutron Source (SNS) at Oak Ridge National Laboratory.
25 T Split Resistive Magnet
After several years of development, the MagLab has completed the design (2009) and fabrication (2012) of a high-field split resistive magnet for use in far-infrared photon scattering experiments. In addition to a standard 32mm bore tube, the magnet includes four large scattering ports of elliptical shape at the mid-plane amounting to a total solid angle of 0.5 steradians of available user space. Such a magnet configuration results in unique design challenges, being especially severe for the windings in the mid-plane region of the innermost coils. Consequently, the MagLab developed, tested and employed a new technology called Split Florida-Helix for which a patent was awarded (US 7,609,139). This user magnet consist of five resistive coils consuming a total of less than 28 MW of DC power and providing a flux-density of 25 T available to the user space. To meet the unique design challenges, Split Florida-Helix technology is used around the mid-plane of the two inner most coils and state-of-the-art Florida-Bitter technology is used for all the regular winding in all five coils.
45 T Hybrid Magnet
The 45 T hybrid magnet was designed as a versatile, reliable, user-friendly magnet system capable of producing 45 T in a 32 mm bore. The system consists of two sets of coils: the superconducting outsert and the resistive insert. The outsert contains three concentric cable-in-conduit coils operating at 1.8 K. The resistive insert contains five water-cooled Florida-Bitter coils. The system was originally designed for the outsert to provide 14.2 T and the insert to provide 30.8 T, for a total of 45 T.
900 MHz Magnet
The 900 MHz magnet is a very wide bore high resolution NMR magnet, with a central field of
21.1 T, a room temperature bore of 100 mm, and a temporal and spatial homogeneity objective of less than 1 part per billion in a 4 cm DSV. It is a major part of the long-term goal of achieving high resolution at 25 T, corresponding to a proton resonance frequency of 1.066 GHz. The future 25 T magnet will consist of a high temperature superconducting (HTS) inner coil operating in the field of a large low temperature superconducting (LTS) outer magnet.
The objective of the pulsed projects, housed at the lab's Pulsed Field Facility at Los Alamos National Laboratory, is to develop and improve magnet technology to produce pulse coils that sustain physics research operations at the facility. We upgrade user magnet performance as we develop reliable improvements in technology. Currently, these projects include the 100 T, currently operating at 89 T, and the 60 T long-pulse. For more information about the pulsed magnet program, contact Chuck Swenson.
The lab designs, builds and maintains high-field DC magnets for the scientific user community. The scope of activity ranges from hybrid inserts providing fields up to 45 T and consuming up to 30 MW of power to small, wire-wound coils that are inserted in the bore of high field magnets. The scientific community to whom we provide service consists primarily of the users of DC field facility, but we also provide contract services to facilities in Tsukuba, Japan and Nijmegen, the Netherlands, among others.