Karaboğa, FıratYetiş, HakanAkdoğan, MustafaGajda, DanielBelenli, İbrahim2021-06-232021-06-2320181051-82231558-2515https://doi.org/10.1109/TASC.2018.2829778https://hdl.handle.net/20.500.12491/9532We fabricated four superconducting racetrack coils wound by bare in situ MgB2/Fe mono and multifilamentary wires produced in our laboratory by using the wind-and-react method. Transport measurements in self-field were performed in a liquid helium dewar. The magnetic field flux density B = 25 mT for I = 92 A was measured to verify how the current flowed inside the coil for one of the coils by means of a cryogenic axial Hall sensor placed into the central bore region of the coil. The coil with 36 turns wound by mono MgB2/Fe wire of l = 24 m has a highest current-carrying capacity of more than 150 A at T = 4.2 K and self-field among the coils. The coils fabricated by multifilamentary wires have relatively low engineering critical current values of I-ce = 67 A for 18 + 1 and I-ce = 57 A for 4 + 5 superconducting/copper filament wires at T = 4.2 K in self-field. Our results form essential contribution toward determination of the possible use of low-cost MgB2/Fe wires in low-field superconductor coil applications.eninfo:eu-repo/semantics/closedAccessMgB2 WiresPowder in TubeRacetrack CoilWind and ReactArticle10.1109/TASC.2018.28297782862-s2.0-85046488455Q2WOS:000435190500001Q3