From 2011 to 2013 SEA-ALP designed, manufactured and supplied to ASG Superconductors, Genova-I and GEC-Alstom, Belfort-F two machines for winding the Toroidal Field Coils of the JT60SA Project. The superconducting conductor has a rectangular section 22 x 26 mm, the jacket made of AISI 316L stainless steel. The coil is formed through a continuous CNC bending, and wound on a 3‑axis Winding Table according to the double pancake technique.

The CNC movement of the individual WM parts (with a couple of exceptions) is driven on the base of the conductor forwarding coordinate, precisely measured by a patented measuring carriage designed for overcoming inaccuracies due to any residual curvature of the straightened conductor and incoming line oscillation. A second measuring carriage placed after bending as a redundancy measure can take into consideration any conductor elongation during bending and provides the additional measure of the local curvature.

Both Machine works on the principle of the ‘reserve spool’, in such a way that the winding is executed from inside to outside for both layers. Nevertheless, the reserve spool has a different design in the two cases, according to the customer’s preference. Both machines could also work in the conventional way, so without the reserve spool, or be designed for layer winding (conductor grading).

The plant footprint is about 30x12m; the plant includes the in‑line ultrasonic cleaning of straightened conductor and an expressly designed tape insulation subsystems.

The Winding Table dimensions are around 8 x 5m.