| 摘要 |
<p>A cylindrical electromagnet assembly 10 comprises a plurality of coils 14 and annular spacers 16, where the annular spacers 16 are placed between adjacent coils 14 to retain the coils in a fixed relative position and where the radial mid-point of each coil is axially aligned with part of the radial extent of an adjacent coil. The assembly may be symmetrical about an axis. The coils 14 and spacers 16 may be impregnated with a hardening material to form a monolithic structure. The spacers 16 may be formed of porous filler material or by solid extruded and anodised aluminium. The coils 14 may be bonded to the inside or outside of a tubular support. The assembly 10 may include shield coils with a greater radius than that of other coils in the assembly. Also disclosed is a method, suitable for producing solenoid magnets, comprising providing a plurality of coils, each formed of multiple turns of superconducting wire embedded within a thermosetting resin; providing annular spacers and bonding the annular spacers between the coils to retain the coils in position relative to one another.</p> |
