Physics Department Colloquia

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Events During the Week of October 9th through October 16th, 2016

Monday, October 10th, 2016

No events scheduled

Tuesday, October 11th, 2016

No events scheduled

Wednesday, October 12th, 2016

No events scheduled

Thursday, October 13th, 2016

No events scheduled

Friday, October 14th, 2016

New Possibilities for Ultra-high Field Superconducting Magnets
Time: 3:30 pm
Place: 2241 Chamberlin hall
Speaker: David Larbalestier, National High Magnetic Field Laboratory
Abstract: Two recent NRC reports have described the scientific and technology rationales for many new types of ultra-high field magnet: msec 150 T pulsed, pulsed 40 T for neutron or x-ray scattering, regional 32 T superconducting (SC), 40 T SC, 28 – 37 T high-resolution NMR, 25 – 40 T SC for x-rays and neutrons, 60 T DC, 20 T for human MRI, as well as magnets for fusion, particle-accelerators, radiotherapy, axion and other particle detectors. The materials and magnet technology have now made sufficient progress that a few of these magnets are now feasible. I will describe this progress and the various pluses and minuses of the three present high-temperature superconductor types and suggest some timelines under which high field coils beyond the capabilities of present-day Nb-Ti and Nb3Sn magnets might start to make it into commercial fabrication. We have shown that High Temperature Cuprate Superconductors can generate fields >40 T, almost twice the Nb-based superconductor limit and in striking distance of the world record 45 T DC field which requires 28 MW of DC power and a large Nb3Sn superconducting outsert magnet.
Host: Robert Joynt
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