Technical Design Report Super Fragment Separator

DRAFT
Figure 2.4.25: Flux density distribution along the border of the good field area (2D calculation) for the
magnet shown in Figure 2.4.24.
The influence of the coil positioning as well as the tolerance of the pole gap was investigated. To
achieve the required field homogeneity it turns out that the coil position must be better than ± 1 mm
and the tolerance on punching the laminations must be less than ± 0.08 mm for the pole gap.
Punching die and punching sheets
The punching sheet width is 2200 mm, the height is 725 mm and the thickness is 0.5 mm resulting
in a weight of 5.65 kg per lamination. The accuracy has to be better than ± 80 µm which requires a
punching die, similar to the one shown in Figure 2.4.26.
Figure 2.4.26: The different steps of the punching die assembling.
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