WB12-5

Superconducting joints using multifilament MgB2 wires for MRI application
*Dipak Patel1, Akiyoshi Matsumoto2, Hiroaki Kumakura2, Minoru Maeda3, Su-Hun Kim4, Hao Liang1, Yusuke Yamauchi5,6, Seyong Choi3, Jung Ho Kim7, Md Shahriar A Hossain1

This talk will present superconducting joints using 36 filaments magnesium diboride (MgB2) wires in continuation joint orientation and their characterisation results. One of the joints demonstrated the critical temperature of 34.4 K and the critical current (Ic) of 38.5 A at 10 K in self-field. Unconventional Ic behaviour of the joint was observed at 20 K in self-field when the Ic was measured in a high to a low field due to the effect of field trapping in the MgB2 bulk within the joint. Elemental mapping at the interface between the MgB2 bulk and the filament revealed oxidation, which was attributed to being responsible for reducing the Ic of the joint.

Keywords: Magnesium diboride, MgB2 superconducting joint, Multifilament MgB2 wire, MRI application

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