1. P.Fabbricatore & S.Farinon
Status of D2 development
P.Fabbricatore & S.Farinon
INFN Genova
2D Mechanical design (Stefania presentation)
Coil end design (refinement)

2. New coil ends were developed in the last months with the aim to optimise the lay-out and the integral field quality
All poles are wound clockwise
The upper pole of the left coil when rotated arounìd the axis of 180° is the lower pole of the rigth coil.
Same for upper pole of the lefth coil and lower pole of the right coil.
Only two poles shall be built.
Coil end with connections

4. Previous solution with both clockwise and anticlockwise windings

5. Field harmonics in coil end with connections
b3 (black) and a3 (red) components
b5 (black) and a5 (red) components

6. b2 (black) and a2 (red) components

8. Coil end with no connections

9. Field harmonics in coil end with no connections
b3 (black) and a3 (red) components
b5 (black) and a5 (red) components

10. b2 (black) and a2 (red) components

12. Conclusions
The 3D magnetic design has been refined and we are close to a satisfactory solution
We are working now on transferring the Roxie data to a CAD drawing , ANSYS and/or Opera input