1. Alignment Strategy for Light Source Facilities LCLS Case Catherine LeCocq SLAC 03/31/08

2. Four Step Process 1.Planning Information Gathering Simulation 2.Survey Network Monument Installation Observation Phase Processing 3.Installation Component Fiducialization Girder Alignment Component Alignment Mapping 4.Operation Phase Monitoring Re-alignment

3. Planning Survey Network Installation Operation Phase 03/31/08C. LeCocq SLAC 3 Information Gathering Physics Requirements -Machine Deck -Alignment Tolerance Engineering Interfaces -General Drawings -Mechanical Models Geodetic Aspects -Case 1: Connection to existing machine -Case 2: No ties necessary

4. Planning Survey Network Installation Operation Phase 03/31/08C. LeCocq SLAC 4 LCLS Case Extract from J. Galayda presentation at the LCLS SAC on 03/18/08

5. Planning Survey Network Installation Operation Phase 03/31/08C. LeCocq SLAC 5 LCLS Machine Deck Position and Attitude of the Component

6. Planning Survey Network Installation Operation Phase 03/31/08C. LeCocq SLAC 6 LCLS Alignment Tolerance Component Alignment Tolerances ComponentValueUnit Quads X,Y+/-100Micron Z+/-250Micron Roll+/-1.0mRad Pitch, Yaw+/-1.5mRad Dipoles X,Y+/-250Micron Z+/-500Micron Roll+/-1.0mRad Pitch, Yaw+/-5.0mRad Correctors X,Y+/-750Micron Z+/-1.5 mm Roll+/-1.0mRad Pitch, Yaw+/-10mRad BPM’s BPMUE1, 2, 3 X,Y+/-100Micron Z+/-500Micron Roll+/-5.0mRad Pitch, Yaw+/-5.0mRad BPMQD, DD X,Y+/-250Micron Z+/-1.0 mm Roll+/-5.0mRad Pitch, Yaw+/-5.0mRad Extract of Table 1 from ESD 1.3-113 Dump Area in the LCLS Deck

7. Planning Survey Network Installation Operation Phase 03/31/08C. LeCocq SLAC 7 Engineering Interfaces Topographic Maps –For outside network planning Architectural Drawings –For general inside network planning Utilities Layout –For detailed inside network planning

8. Planning Survey Network Installation Operation Phase 03/31/08C. LeCocq SLAC 8 Geodetic Aspect Liaison between the machine theoretical layout and the civil construction aspect A.k.a. the datum problem Two variations: –Connection to an existing machine –No ties necessary Output: –List of identified points with published coordinates –Transformation formulas between all coordinate systems

9. Planning Survey Network Installation Operation Phase 03/31/08C. LeCocq SLAC 9 LCLS Coordinate Systems Extract from LCLS TN-03-08: LCLS Undulator Coordinate System

10. Planning Survey Network Installation Operation Phase 03/31/08C. LeCocq SLAC 10 Simulation Verify current strategy –Laser tracker –Precision level Test impact of additional observations –Total station –Gyrotheodolite –GPS –Optical plummet –Portable wire –Robotic arm

11. Planning Survey Network Installation Operation Phase 03/31/08C. LeCocq SLAC 11 Simulation Software Two approaches: –Error propagation –Monte Carlo One recommendation: same software package for simulation and adjustment Two solutions: –In-house software –Commercial package

12. Planning Survey Network Installation Operation Phase 03/31/08C. LeCocq SLAC 12 LCLS Case Undulator Hall presented at the Lehman Review on 08/02/06 sD = 30 μm sh = 30 μm / D sv =50 μm /D sdh = 50 μm sz = 22 μm sx = 47 μm sy =46 μm 160 0 165 0 170 0 175 0 180 0 185 0 190 0 195 0 200 0 205 0 210 0 215 0 220 0 225 0 UH Tunnel Start STA 1672.09 ft 509.653 m SLOPE UH Tunnel West Side Thermal Barrier STA 2237.33 ft 681.939 m Undulator Hall Tunnel BT H Beam Dump 24” Vertical Penetration (approx. position)

13. Planning Survey Network Installation Operation Phase 03/31/08C. LeCocq SLAC 13 Survey Network Monument Installation Observation Phase –Laser tracker –Precision level –Other Processing –Free net adjustment –Datum determination

14. Planning Survey Network Installation Operation Phase 03/31/08C. LeCocq SLAC 14 LCLS Monument Hardware Floor Monument: »drilled using 1 3/4" core drill bit to a depth of 2” with a Hilti rotary hammer drill »set with grout (Quikrete) »lids should be flush with the floor Wall Monument: »drilled with a 5/8” drill bit to a depth of 2 1/8” with a Hilti rotary hammer drill »Hilti 1/2-13 drop-in anchors are then installed »Wall monument is screwed into anchor (Loctite may be used on threads)

15. Planning Survey Network Installation Operation Phase 03/31/08C. LeCocq SLAC 15 LCLS Monument Layout

16. Planning Survey Network Installation Operation Phase 03/31/08C. LeCocq SLAC 16 Observation Phase Laser Tracker –Adapt observation scheme tested in simulation to real world 3 triplets per point –Calibrate instrument –Follow observation guidance: 1 triplet = 2 sets of direct and reverse Precision Level –Adapt observation scheme tested in simulation to real world Loop over floor points –Calibrate instrument and rod –Follow observation guidance: 1 shot = average of 3 readings Other –Total station –Nadir plummet –Gyrotheodolite –Portable wire

17. Planning Survey Network Installation Operation Phase 03/31/08C. LeCocq SLAC 17 LCLS UH Network Tracker Observation Tracker and Level Observation Typical Tracker Set-up 5 floor-10 wall Distance from 1.5m to 30.5m

18. Planning Survey Network Installation Operation Phase 03/31/08C. LeCocq SLAC 18 LCLS UH-Dump Area

19. Planning Survey Network Installation Operation Phase 03/31/08C. LeCocq SLAC 19 Processing Free net adjustment –Blunder detection –Standard deviation validation Generate additional observation plan if necessary Datum determination –Coordinate changes –A-posteriori results

20. Planning Survey Network Installation Operation Phase 03/31/08C. LeCocq SLAC 20 LCLS Network in Progress Points451 Tracker86 Total Station11 Triplets1475 Height Differences473 Azimuth14 Wire3 Horizontal Offsets79 Point Coordinates1329 Instrument Coordinates291 Instrument Rotations269 Nuisance Parameters7 Datum Parameters4 Total Unknowns1900

21. Planning Survey Network Installation Operation Phase 03/31/08C. LeCocq SLAC 21 Installation Sequence: –Component Fiducialization –Girder Alignment –Component Alignment –Mapping Many variations One requirement: a solid monument network

22. Planning Survey Network Installation Operation Phase 03/31/08C. LeCocq SLAC 22 Component Fiducialization Advantage: repeatable references Methodology: mechanical or magnetic Tooling Choices: compatible with observation techniques in the field Instrument: –CMM –Laser tracker –Optical tooling –Robotic arm

23. Planning Survey Network Installation Operation Phase 03/31/08C. LeCocq SLAC 23 LCLS CMM

24. Planning Survey Network Installation Operation Phase 03/31/08C. LeCocq SLAC 24 Girder Alignment Advantages: –Better relative component alignment –Speed up installation phase Variations: –Individual component adjustment –Mover Mechanism: Fixed Remote Feedback

25. Planning Survey Network Installation Operation Phase 03/31/08C. LeCocq SLAC 25 LCLS UH Girders Extract from LCLS TN-08-03: Girder Alignment Plan

26. Planning Survey Network Installation Operation Phase 03/31/08C. LeCocq SLAC 26 Component Alignment Timeline: –Template layout –Stand/base plate alignment –Component/girder alignment Principle: –Solid monument network –Local instrument set-ups Variations and possible difficulties come with the hardware installed: –Clearance around bolts –Mover system centered around their range –Component pre-set to nominal –Fiducial and mover in-line when possible –Right balance between fine and coarse thread

27. Planning Survey Network Installation Operation Phase 03/31/08C. LeCocq SLAC 27 LCLS Stands in BTH West

28. Planning Survey Network Installation Operation Phase 03/31/08C. LeCocq SLAC 28 Mover Systems 6 dof: 3 Y; 2 X; 1 Z Used in NLCTA (right pictures) and adapted in the LCLS Vault (below)

29. Planning Survey Network Installation Operation Phase 03/31/08C. LeCocq SLAC 29 Mapping Observation scheme: –Identical to monument network –Including component fiducials Computation phase –Identical to monument network –Generating observed position and attitude (and their standard deviations) for each component Move list –Option 1: to ideal –Option 2: to smooth line

30. Planning Survey Network Installation Operation Phase 03/31/08C. LeCocq SLAC 30 Operation Phase Monitoring –HLS –WPM –Other Re-alignment –Individual request: one set-up –Best scenario: 1.Mapping 2.Moving 3.Mapping

31. Planning Survey Network Installation Operation Phase 03/31/08C. LeCocq SLAC 31 LCLS Undulator Monitoring ADS (Alignment Diagnostic System) Integrated to the girder Expectation: 1 micrometer

32. Summary Fit the lab alignment legacy Core group –1 manager/liaison –1 data analyst –1 instrument/calibration specialist –6 field surveyors –1 software/archive engineer Require good integration with other technical groups