1. Overview of Alignment System

2. FSI solution: implementation Retrolefrector ball 1” FSI head (TIP-TILT adjustmnent needed) To provide minimum redundancy 3 targets per one flange of crab cavity needed (12 in total) Tip-Tilt adjustment for FSI heads have to be implemented Use of 1” retroreflectors preferred

3. BCAM solution: how it works

4. BCAM solution: implementation proposal Target „finger” - 2 reflective spheres separated by double ceramic black spheres 4 target „fingers” on each side of cavity min 0.8m

5. BCAM solution: implementation proposal To provide stablity of reference measurement frame – the HBCAM cameras support shall be stable in the time Is it possible to create separated tables fastened to the floor What is the stability of cryostat (vacuum forces) in case if the tables will be fastened to cryostat Shielding against reflexion of light needed Tube covering sight of view to prevent reflections of HBCAM laser from other than targets shining components HIE Isolde solution – alu rectangular tube, black oxidized, actively cooled Avoid using rounded shielding profiles

6. Reflexion shielding – updated integration model G. Villiger

7. CRAB Cavities: Alignment with BCAM CRAB Cavities: Alignment with BCAM - G. Villiger 7

8. Introduction 4X Targets / Tank-Cavitie 4X BCAM on Cryomodule 4X BCAM on floor CRAB Cavities: Alignment with BCAM - G. Villiger

9. Top and front view CRAB Cavities: Alignment with BCAM - G. Villiger

10. Transversal view: in the cryomodule Rear side Front side CRAB Cavities: Alignment with BCAM - G. Villiger Encombrement ? Tube de protection ?

11. Transversal view: just after the cryomodule Rear side Front side CRAB Cavities: Alignment with BCAM - G. Villiger Piquage inferieure ? BCAM suspendu? Systeme reglage ?

12. Transversal view: near the fix support Rear side Front side CRAB Cavities: Alignment with BCAM - G. Villiger Systeme reglage ?

13. Protection tubes: Predesign for the moment CRAB Cavities: Alignment with BCAM - G. Villiger Tube de protection: écran thermique + aluminium noir mat + thermalisation ?

14. In the tunnel: Top view CRAB Cavities: Alignment with BCAM - G. Villiger Emplacement des pieds fixes ?

15. In the tunnel: left side Emplacement des pieds fixes ? Tube sous la chambre?

16. In the tunnel: left side CRAB Cavities: Alignment with BCAM - G. Villiger Emplacement des pieds fixes ? Tube sous la chambre?

17. In the tunnel: right side CRAB Cavities: Alignment with BCAM - G. Villiger Emplacement des pieds fixes ? Tube sous la chambre?

18. In the tunnel: right side CRAB Cavities: Alignment with BCAM - G. Villiger Emplacement des pieds fixes ? Tube sous la chambre?

19. In the tunnel: in 3D CRAB Cavities: Alignment with BCAM - G. Villiger

20. In the tunnel: in 3D CRAB Cavities: Alignment with BCAM - G. Villiger

21. Open Points CRAB Cavities: Alignment with BCAM - C. Zanoni Thermal load due to holes in the shield (16 ø 30 mm, 4 ø 60 mm) Effect of holes on magnetic shielding Thermal contraction (after calibration) Possibility of measuring longitudinal motion. Effect of longitudinal motion on sensors performance Work position in SPS