This paper reports on the fabrication and testing of an
MgB2
coil made by a wind and react method. We made a 130 m-long Fe/Cu-composite sheathed
MgB2-superconducting round wire applying an in situ PIT method. Using a
58 m-long wire, we fabricated a small solenoid coil with 459 turns. The
Ic of
the coil were measured under different external fields and temperatures. Excellent correspondence of
Ic
between the short sample and the coil was obtained at 4.2 K and in external fields
above 4 T. This indicates that the 58 m-long wire has a very homogeneous
Ic
distribution. At 25 K this coil generated a maximum magnetic field of 1 T
(Ic = 100 A,
overall-Jc = 200 A mm−2) in an external field of 0.5 T. At 4.2 K this coil generated 1.9 T
(Ic = 184 A,
overall-Jc = 366 A mm−2) in the external field of 0.5 T. These results demonstrate the possible use of an
MgB2
superconducting coil for superconducting magnet applications such as in MRI.
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