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Mike Martens (CWRU Physics)

Date: Thu. October 25th, 2018, 4:00 pm-5:00 pm
Location: Rockefeller 301

Conserving Helium: A story of MgB2 superconducting wire and MRI magnets

The fabrication of MgB2 superconducting wire has enabled the development of novel magnet designs for MRI systems. Compared to MRI magnets in use today, which are submerged in a bath of liquid helium, the higher critical temperature (39K) of the MgB2 facilitates conduction cooling which reduces the use of liquid helium by a factor of 100 or more. In collaboration with Hyper Tech Research, a world leader in the manufacture of MgB2 wire, and the Center for Superconducting and Magnetic Materials at the Ohio State University, we have developed a comprehensive conceptual designs for 1.5 T and 3 T MgB2 magnets. In addition an important milestone has been the construction and operation of a 
full sized coil wound with MgB2 wire. In this talk we present these magnet designs, the challenges encountered along the way, and the experimental results using the prototype coil. 
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