2026 Workshop on Fixed Field Alternating Gradient Accelerators (FFA'26)

Session

Magnets

26 Nov 2026, 16:00

The University of Melbourne

14. Test of a 5.8 T superconducting magnet producing combined function fields in an elliptic aperture

Lucas Brouwer (Lawrence Berkeley National Laboratory)

26/11/2026, 16:00

Contributed Talk

We present the test of a superconducting accelerator magnet producing combined dipole and quadrupole fields in a 90 mm x 40 mm elliptic aperture. The 0.6 m long magnet consists of two Nb-Ti canted-cosine-theta (CCT) winding layers impregnated with paraffin wax and assembled into an iron yoke and aluminum shell-based structure. We share the quench training and field performance at 4.2 K,...

40. A Differential Geometric Framework for Canted Cosine Theta Windings on Pseudo-Toroidal Surfaces

Mannix Showell (The University of Melbourne)

26/11/2026, 16:30

Contributed Talk

Canted Cosine Theta (CCT) magnets are promising candidates for superconducting magnet systems in Fixed Field Accelerators (FFAs) due to their ability to generate strong, high-quality multipole fields and their favourable structural characteristics. This work presents a differential geometric formalism for generalising CCT winding trajectories to curved surfaces with arbitrary transverse...

13. FFA Magnet prototype for high intensity pulsed operation

Carl Jolly

26/11/2026, 16:50

Contributed Talk

The Fixed Field Alternating Gradient (FFA) accelerator is a natural candidate for a high-power pulsed proton driver, although no high-power FFA has yet been constructed. As a critical component of the accelerator, the main magnets are the subject of particular study. Operational flexibility, in terms of machine optics, over a large range is an essential feature of such a machine. In order to...