Geometry Modernization of a Dipole Magnet for the SIS 300

The minimization of mechanical strain in end parts of coil block for superconducting multi-layer-type magnets

“…The introduced method was applied for the optimization of the coil ends for the alternative 1 m model of the fast cycling dipole magnet for the synchrotron SIS 300, the FAIR project, designed jointly by GSI (Germany) and IHEP [8]. The main challenge in modeling of the coil ends for this 6 T magnet was attaining the maximal effective length, when the total length of the coil block is fixed.…”

“…The geometry of the coil block in the cross section of the magnet is defined by the number of turns in the block N, the inner radius of the layer R, the initial angle of the block ϕ and the inclination angle α-both angles from the median plane. The main geometric parameters of the coil, used for the construction of the coil end geometry [8], are shown in table 1.…”

“…The optimal length of half-axis E and the optimal number of turns in the block n in the second obtained coil block were determined from the equality U (E) = 0.7, as is shown in figure 3. At the final stage of optimization the spacer thickness in the coil ends was determined to suppress the lower integral field multi-poles and obtain the maximal effective length for the magnet [8]. It turns out that the optimal geometry for n = 11 is the most appropriate from a technological point of view.…”