First-wall components, magnetic

The first major component of the experimental apparatus, the 48D48 magnet, is in place and has ben powered up. The field shaping pole tips and field clamp assembly, designed at CMU and purchased by the AGS, performed as anticipated (See Sect IX.G). Layout of shielding walls, cable trays, and electronics areas will begin in August. 

Figure 13. Model of self-reversal in the ilmenite-hematite solid solution (after Hoffman 1992). Boxes represent (001) cation layers (viewed down the c-axis), shaded according to their Fe-occupancy (Fe = dark, Ti = light). Two ordered ferrimagnetic domains are shown (left and right) separated by a twin wall (central) with a canted antiferromagnetic stmeture. (a) The twin wall orders first with its parasitic moment parallel to the external field. The ferrimagnetic domains order perpendicular to external field and antiparallel to each other, (b) The domain moments tilt away from the wall moment at lower temperatnres, creating a large reverse component of magnetization.

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