Table 1. Table with the geometric parameters of the three rings after the first order field optimization.
| z position from magnetic center (cm) | Ri (mm) | Thickness L (mm) | Final Field B (T) | |
|---|---|---|---|---|
| Ring 1 | 41.00 | 43.50 | 14.02 | 0.986 |
| Ring 2 | 47.24 | 38.30 | 8.87 | 0.525 |
| Ring 3 | 52.28 | 34.42 | 7.06 | 0.328 |
The inner radii for all three rings were set to 29.00 mm, and the remanence Br was fixed to 1.3 T. The last column informs about the final value of the magnetic field at the z positions where the linear gradient was canceled.