1. TDI observations winter break 2012 Thanks to F. Loprete, E. Page, B. Henrist, B. Salvant

2. TDI.4R8.B2 Jaws not centered with respect to the beam screen exit, both ends hanging down Large deformation on right (38 mm) and left (24 mm) side of the beam screen at 2.6 m from the transition flange First wrinkle close to support point Offset ~ 20 mm

3. TDI.4R8.B2 Deformation on each beam screen part Extrem bump on the upstream side Two waves, upstream worse RF contacts well in place in the center

4. TDI.4R8.B2 Ti coating looks ok

5. TDI.4L2.B1 Same shape with two humps and the ends hanging Max deformation around 18 mm Small lateral offset at the central connection

6. TDI.4R8.B2 Whole beam screen decends Deformation in every plane Major cause for big deformations: „Sliding fixation“

7. TDI.4R8.B2 RF contacts and foil look good

8. TDI.4R8.B2 Copper very soft

9. TDI.4R8.B2 Little space to add support structure Very reduced accessibility Main flange not to be disassembled in situ