1. CLEX constraints between the 2 linacs CLIC meeting 18 March 2015 Vivien RUDE Contents : (Alignment in the CLEX) Lab constraints CLEX constraints

2. CLEX Alignment Component Drive Beam Radial (μm) Vertical (μm) Error budget (μm) PETS1 Enter6537100 Exit-2715100 DBQ1 Enter-9-420 Exit-21920 PETS2 Enter2878100 Exit-5158100 DBQ2 Enter81120 Exit-3-1420 Component Main Beam Radial (μm) Vertical (μm) Error budget (μm) AS1 Enter-51-5910 Exit-161-1610 AS2 Enter-68-8510 Exit-139-10310 Component Main Beam Radial (μm) Vertical (μm) Error budget (μm) AS1 Enter29-2410 Exit-653910 AS2 Enter46-810 Exit-10-710

3. Contents : Lab constraints CLEX constraints

4. TANK Lab synoptic TANK Time 0 : 2013-02-18 No constraints between the 2 linacs Time 1 : 2013-10-14 Connection to the tank Connection to the waveguide Connection to the vacuum network Objective : See the constraints created by the connections Waveguide

5. theory Roll (μrad) Drive BeamTheory Roll (μrad)571 Radial (μm)278 Vertical (μm)0 Lab End of installationDifference 465 93 μrad 190 77 μm 17 15 μm Without constraints 558 267 2 Main BeamTheory Roll (μrad)0 Radial (μm)0 Vertical (μm)0 2013-02-182013-10-142013-02-182013-10-14 +/- 30 μrad +/- 9 μrad +/- 2 μrad Without constraints 0 0 0 End of installationDifference 16 16 μrad 11 11 μm 2 2 μm Without constraints End of instalation Without constraints End of instalation

6. TANK Lab constraints Constraints due to : Waveguide Connection to the TANK Connection to the waveguide

7. Waveguide Vacuum Network Time 0 : 2014-10-10 No constraints between the 2 linacs Time 1 : 2015-02-25 Connection to the waveguide Connection to the vacuum network Ceiling Support CLEX synoptic

8. theory Roll (μrad) CLEX 2014-10-102015-02-252014-10-102015-02-25 +/- 2 μrad +/- 35 μrad +/- 11 μrad Drive BeamTheory Roll (μrad)571 Radial (μm)232 Vertical (μm)0 End of installationDifference 449 124 μrad 173 64 μm 1 1 μm Without constraints 573 237 0 Main BeamTheory Roll (μrad)0 Radial (μm)0 Vertical (μm)0 Without constraints 0 0 0 End of installationDifference 56 56 μrad 43 43 μm 2 2 μm Without constraints End of instalation Without constraints End of instalation

9. Waveguide Vacuum Network Ceiling Support Constraints due to : Connection to the waveguide Connection to the vacuum network Support CLEX constraints

10. Summary The independence of movements between the 2 linacs is not respected on the Lab and on the CLEX. There are some constraints between the 2 linacs. The removal of the TANK didn't solve the problem. The constraints between the 2 linacs are worse on the CLEX. The supports of the waveguide create strong constraints between the 2 linacs.  The active pre-alignment can’t be achieved with these constraints.

11. SPARE

12. TANK Lab synoptic TANK Time 0 : 2013-02-18 No constraints between the 2 linacs Time 1 : 2013-10-14 Connection to the tank Connection to the waveguide Connection to the vacuum network Waveguide Objective : See the constraints created by the connections

13. theory Roll (μrad) Lab 2013-10-142013-02-182013-10-14 +/- 15 μrad +/- 25 μrad 2013-02-18 +/- 2 μrad Drive BeamTheory Roll (μrad)0 Radial (μm)0 Vertical (μm)0 End of installationDifference 20 20 μrad 19 19 μm 4 4 μm Without constraints 0 0 0 Main BeamTheory Roll (μrad)667 Radial (μm)87 Vertical (μm)0 Without constraints 668 93 2 End of installationDifference 635 33 μrad 85 8 μm 2 0 μm Without constraints End of instalation Without constraints End of instalation