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3D view of the magnet, as constructed in Ansoft MAXWELL 3D software. For simplicity, the copper driving coils are shown as rectangular parallelepipeds. The polepiece shape was chosen to give constant ∂Bx∕∂y in the gap. Scale: core cross-sections are 10×10 mm2. Polepieces (tongues) are 10.5 mm long×10 mm wide×2 mm high. The minimum gap is 1 mm.
