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. 2017 Aug 22;88(8):084301. doi: 10.1063/1.4999358

FIG. 3.

FIG. 3.

(a) Magnetostatic planar finite element model of flux distribution in the core of a 3F3 electromagnet (TX51/32/19) with a 7.5 mm gap and magnitude 16 kA/m at center of the gap. (b) Infrared thermograph of uncooled electromagnet operating with 16 kA/m gap amplitude at 500 kHz after 30 s. Note correlation of core temperature with flux density. (c) Sketch of low cost cooling apparatus with inset thermograph showing coil operating with cooling with gap amplitude 30 kA/m at 100 kHz. (d) Comparison of temperature versus time from infrared thermography on uncooled cores with 7.5 mm gaps operated at 500 kHz and 16 kA/m. (Part numbers: Ferroxcube TX51/32/19-3F3, Ferroxcube TX51/32/19-3C95, Epcos B64290L82X87, Fair-Rite 5978003801.) (e) Comparison of temperature increase of Ferroxcube TX51/32/19-3F3 with a 7.5 mm gap at 100 kHz and 60 kA/m with and without cooling.