Davide: update on specs
Luke:
- Calculation of the B⊥/B∥_RMS and B⊥/B∥_MAX for the current design inside the reference circle (r = 25 mm), for smaller circle radius r as appropriate (e.g. in steps of 5 mm), and on axis;
- Calculation of the ratio between transverse and longitudinal field along the axis;
- First ideas on how to meet the requirements;
- Give a cost comparison between the pancake solution (less power converters because need of less steering coils) including the shielding, against a full drift magnet solution;