1. Collimation Working Group #127 Collimator Alignment Control IR 7 and 3 Patrick Bestmann06/06/2011

2. Overview 1 Introduction 2 Status 3 IR7 & IR3 4 Planning

3. Control of the Collimator alignment  The alignment of the collimators will be controlled using a dedicated survey train.  Strategy is the same as for the initial alignment (local smooting between quadrupoles)  Regular control measurements  Control of the alignment after exchange of a collimator  The alignment deviations can be given to the collimator operation.

4. Sensor unit Control unit Battery unit Traction unit

5.  Digital close range photogrammetry  Fast and non contact measurement of the activated collimators  Wire offset measurements to detect train position and link the different aquisition volumes.  Reliable reference over long distances Concept Quad Collimators

6. Survey train  The train is based on a combination of close range photogrammetry and streched wire measurements  All collimators in IR7 are equipped with additional photogrammetric targets (350)  5 Overlapping wires are installed along the LSS7 as straight reference for the train

7. Concept Cameras Targets Wire Sensor Collimator Quad

8.  AEROEL XLS35-XY laser micrometer as wire measurement system  Open sensor configuration  Large field of view 35mm  Commercial on the market  AICON MoveInspect HR Photogrammetric system  WYLER Zerotronic Inclination Sensors Sensors

9. XLS-35 Micrometer  Optical Laser Micrometer  Measurement of dark/light transistions  Relative position of 2 wires to the reference pin  200Hz aquisition frequency  Linearity of ±2.5µm  Repeatability of ±2µm

10. Sensors MoveInspect HR  Commercial Photogrammetric system AICON MoveInspect HR  4 AVT Marlin F-201B Cameras in industrial housing  Syncbox  Calibration Panel  MoveInspect HR software  Custom modifications

11.  Synchronised aquisition; automatic image measurement and calculations  We obtain a set of 3D coordinates with identified point groups for collimator and wire sensor systems

12. Targets  Retro targets are sensitive to radiation  Use of non retro targets  Production of special aluminium targets  whole body made of black matt aluminium  with light grey aluminium insert

13. Software

14. Operation sequence  Installation in IR7 (uptream of MCBWV_4R7)  Startup and calibration check  Visual control of wires and weights  Start of Sequencer  Autonomous movements and aquisition  Online calculation and results in situ  Stability tests and aquisition ≈ 100 sec. Operation Video

16. Benchmark Test  Real size mock-up in 927  Two collimators and 5 reference magnets  Setup is measured with a Laser Tracker as reference coordinates for benchmark test  Fully independend measurements even with different targets.  Precision of reference measurements 0.15mm

17. Test mock-up

18. LGC Residuals POINT 1 POINT 2 POINT 3 OBSERVE SIGMA CALCULE RESIDU RES (M) (MM) (M) (MM) /SIG LHC____GISP_____6L7_ LHC____MQWA____B6L7S LHC____GISP_____4L7_ 0.47469 0.10 0.47468 -0.00 -0.02 LHC____GISP_____6L7_ LHC____MQWA____B6L7E LHC____GISP_____4L7_ 0.64842 0.10 0.64842 0.00 0.05 LHC____GISP_____6L7_ LHC____TCP_____E6L7C LHC____GISP_____4L7_ 0.91386 0.10 0.91377 -0.09 -0.92 LHC____GISP_____6L7_ LHC____TCP_____E6L7F LHC____GISP_____4L7_ 0.82393 0.10 0.82388 -0.05 -0.52 LHC____GISP_____6L7_ LHC____TCP_____E6L7G LHC____GISP_____4L7_ 0.71828 0.10 0.71826 -0.03 -0.27 LHC____GISP_____6L7_ LHC____TCP_____E6L7H LHC____GISP_____4L7_ 0.82279 0.10 0.82278 -0.01 -0.13 LHC____GISP_____6L7_ LHC____TCP_____E6L7D LHC____GISP_____4L7_ 0.91261 0.10 0.91263 0.02 0.22 LHC____GISP_____6L7_ LHC.B2_TCSG_____6L7C LHC____GISP_____4L7_ 0.19867 0.10 0.19864 -0.03 -0.28 LHC____GISP_____6L7_ LHC.B2_TCSG_____6L7F LHC____GISP_____4L7_ 0.28869 0.10 0.28866 -0.03 -0.30 LHC____GISP_____6L7_ LHC.B2_TCSG_____6L7G LHC____GISP_____4L7_ 0.39342 0.10 0.39339 -0.02 -0.24 LHC____GISP_____6L7_ LHC.B2_TCSG_____6L7H LHC____GISP_____4L7_ 0.28817 0.10 0.28815 -0.02 -0.22 LHC____GISP_____6L7_ LHC.B2_TCSG_____6L7D LHC____GISP_____4L7_ 0.19825 0.10 0.19824 -0.02 -0.16 LHC____GISP_____6L7_ LHC____MQWA____A5L7E LHC____GISP_____4L7_ 0.57857 0.10 0.57859 0.02 0.17 LHC____GISP_____6L7_ LHC____MQWA____B5L7E LHC____GISP_____4L7_ 0.28824 0.10 0.28825 0.01 0.09 LHC____GISP_____6L7_ LHC____MQWA____B5L7S LHC____GISP_____4L7_ 0.28894 0.10 0.28895 0.01 0.09 LHC____GISP_____6L7_ LHC____MQWA____C5L7E LHC____GISP_____4L7_ 0.28822 0.10 0.28822 0.01 0.09 LHC____GISP_____6L7_ LHC____MQWA____B6L7S LHC____GISP_____4L7_ 0.47468 0.10 0.47468 0.00 0.02 LHC____GISP_____6L7_ LHC____MQWA____B6L7E LHC____GISP_____4L7_ 0.64843 0.10 0.64842 -0.01 -0.05 LHC____GISP_____6L7_ LHC.B2_TCSG_____6L7C LHC____GISP_____4L7_ 0.19860 0.10 0.19864 0.04 0.35 LHC____GISP_____6L7_ LHC.B2_TCSG_____6L7F LHC____GISP_____4L7_ 0.28863 0.10 0.28866 0.03 0.28 LHC____GISP_____6L7_ LHC.B2_TCSG_____6L7G LHC____GISP_____4L7_ 0.39337 0.10 0.39339 0.02 0.21 LHC____GISP_____6L7_ LHC.B2_TCSG_____6L7H LHC____GISP_____4L7_ 0.28812 0.10 0.28815 0.03 0.26 LHC____GISP_____6L7_ LHC.B2_TCSG_____6L7D LHC____GISP_____4L7_ 0.19823 0.10 0.19824 0.01 0.10 LHC____GISP_____6L7_ LHC____MQWA____A5L7E LHC____GISP_____4L7_ 0.57861 0.10 0.57859 -0.02 -0.17 LHC____GISP_____6L7_ LHC____MQWA____B5L7E LHC____GISP_____4L7_ 0.28826 0.10 0.28825 -0.01 -0.08 LHC____GISP_____6L7_ LHC____MQWA____B5L7S LHC____GISP_____4L7_ 0.28896 0.10 0.28895 -0.01 -0.09 LHC____GISP_____6L7_ LHC____MQWA____C5L7E LHC____GISP_____4L7_ 0.28823 0.10 0.28822 -0.01 -0.09 RESIDU MOYEN = -0.00 MM : LIMITES DE CONFIANCE A 95.0 = (-0.01, 0.01) ECART-TYPE = 0.03 MM : LIMITES DE CONFIANCE A 95.0 = (0.03, 0.04)

19. Test Results: Comparison to theory SIGMA ZERO A POSTERIORI = 0.18061, VALEUR CRITIQUE = (0.66705, 1.33264) POINT X Y Z ID DX DY DZ DCUM OPTION LHC____MQWA____B6L7S 0.07463 2.67950 0.55230 -1 0.0 0.0 0.0 -1.00000 CALA LHC____MQWA____C5L7E 0.26494 24.56889 0.54781 -1 0.0 0.0 0.0 -1.00000 CALA LHC____MQWA____B5L7S 0.26327 19.17045 0.54864 -1 -0.14 0.00 0.0 -1.00000 VXY LHC____MQWA____B5L7E 0.26302 13.77049 0.54904 -1 -0.21 0.00 0.0 -1.00000 VXY LHC____MQWA____A5L7E -0.02799 9.90808 0.42778 -1 -0.25 0.00 0.0 -1.00000 VXY LHC.B2_TCSG_____6L7D 0.35188 7.31930 0.28024 -1 -0.25 0.11 0.0 -1.00000 VXY LHC.B2_TCSG_____6L7H 0.26196 7.31948 0.28246 -1 0.02 -0.03 0.0 -1.00000 VXY LHC.B2_TCSG_____6L7G 0.15668 7.11967 0.28642 -1 -0.18 0.01 0.0 -1.00000 VXY LHC.B2_TCSG_____6L7F 0.26137 6.91947 0.28479 -1 -0.06 0.03 0.0 -1.00000 VXY LHC.B2_TCSG_____6L7C 0.35139 6.91931 0.28254 -1 0.01 0.05 0.0 -1.00000 VXY LHC____TCP_____E6L7D -0.36292 4.93016 0.28785 -1 0.22 0.01 0.0 -1.00000 VXY LHC____TCP_____E6L7H -0.27306 4.93041 0.28767 -1 0.04 -0.02 0.0 -1.00000 VXY LHC____TCP_____E6L7G -0.16854 5.13067 0.28748 -1 -0.03 0.02 0.0 -1.00000 VXY LHC____TCP_____E6L7F -0.27414 5.33040 0.28784 -1 -0.21 -0.00 0.0 -1.00000 VXY LHC____TCP_____E6L7C -0.36409 5.33016 0.28809 -1 -0.16 -0.01 0.0 -1.00000 VXY LHC____MQWA____B6L7E -0.09897 3.44002 0.54708 -1 0.00 0.00 0.0 -1.00000 VXY LHC____GISP_____6L7_ 0.54885 -0.00020 0.70000 -1 -1.15 -0.20 0.0 -1.00000 VXY LHC____GISP_____4L7_ 0.55471 33.41672 0.66808 -1 4.71 -0.15 0.0 -1.00000 VXY

20. Test conclusion  System repeatability is below 0.1mm  Comparison to theory contains the uncertainty of the LTD measurements and the mechanical precision of the exchanged targets.  Precision is 0.2mm and already within specs but some optimisation margin can still be used

21. TIM Security  Some security issues to adress  Some known issues from Tim 30*30  TIM security rules with personell in place  Access restricted to team members  Airflow must be minimized (extraction point of sector 6-7 and 7-8)  Working on more advanced mobile control panel

22. Status  Sensorsystems are running  All Subroutines are running  Calculation routines beeing finalized  Tunnelinstallation IR 7 completed  5 overlapping wires  10 pillars  2x 111 m, 2x 85 m,1x 146 m  350 Optical targets in place and measured  IR 3 in preparation

23. To do list  Finalising Hardware configuration  Housing, wireing  Transfer from PC to PXI  More powerful and less consuming  Adding Mobile Control Panel  Tests for full system validation ongoing  Ready for winter stop 2011/2012  Preparation for IR 3 Installation in long shutdown

24. Planning  09/11Hardware finished Programm transferred to PXI  10/11Full validation in mock-up Including all possible configurations  11/11Documentation and Procedures (Installation, Calibration, Operation, RP, Safety)  01/12Installation and measurements in IR7 for 3 days (night shift) Manual measurements of LSS 7 Continious optimisation and developments with core team (C. Charrondiere, T. Feniet, P. Bestmann) and assignment of alternate specialists.