1. October 20-21, 2005 Internal LCLS Undulator Alignment and Motion Review Catherine LeCocq, SLAC lecocq@slac.stanford.edu 1 Undulator Alignment Concept & Conventional Alignment Catherine LeCocq, SLAC October 21, 2005 Undulator Alignment Concept Conventional Alignment Steps Instrument and Tooling Network Design Alignment after Installation Undulator Alignment Concept Conventional Alignment Steps Instrument and Tooling Network Design Alignment after Installation

2. October 20-21, 2005 Internal LCLS Undulator Alignment and Motion Review Catherine LeCocq, SLAC lecocq@slac.stanford.edu 2 Fiducialize all possible components (Yurii, Zack, Eric) Assemble and pre-align all relevant components on a girder (Robert) Build a tunnel network Set all girders in the tunnel Map all components to verify ab-initio alignment for BBA Launch monitoring systems (Franz, Georg) Perform BBA (Paul) ( ) … Presenter Fiducialize all possible components (Yurii, Zack, Eric) Assemble and pre-align all relevant components on a girder (Robert) Build a tunnel network Set all girders in the tunnel Map all components to verify ab-initio alignment for BBA Launch monitoring systems (Franz, Georg) Perform BBA (Paul) ( ) … Presenter Current Undulator Alignment Concept

3. October 20-21, 2005 Internal LCLS Undulator Alignment and Motion Review Catherine LeCocq, SLAC lecocq@slac.stanford.edu 3 Gather all fiducial data and perform tunnel network design Install tunnel monuments (floor and wall) Survey tunnel network Mark floor for anchors Align “floor plates” Re-survey tunnel network Align “girder stands” (with CAM movers pre-set) Survey girders (fully loaded and pre-aligned) Gather all fiducial data and perform tunnel network design Install tunnel monuments (floor and wall) Survey tunnel network Mark floor for anchors Align “floor plates” Re-survey tunnel network Align “girder stands” (with CAM movers pre-set) Survey girders (fully loaded and pre-aligned) Conventional Alignment Steps

4. October 20-21, 2005 Internal LCLS Undulator Alignment and Motion Review Catherine LeCocq, SLAC lecocq@slac.stanford.edu 4 Instruments and Tooling (1)

5. October 20-21, 2005 Internal LCLS Undulator Alignment and Motion Review Catherine LeCocq, SLAC lecocq@slac.stanford.edu 5 Laser Trackers FARO SI Precise Levels Trimble (Zeiss) DiNi12 Leica DNA03 Total Stations Leica TC2002 Others FARO Platinum Arms (4ft and 8ft) Optical Tooling (K&E and Brunson Jig Transits, K&E levels) Portable Water Level (in development) SLAC Calibration Laboratories: Sector 10: Horizontal and Vertical Comparators Heavy Fab: K&E Optical Comparator Laser Trackers FARO SI Precise Levels Trimble (Zeiss) DiNi12 Leica DNA03 Total Stations Leica TC2002 Others FARO Platinum Arms (4ft and 8ft) Optical Tooling (K&E and Brunson Jig Transits, K&E levels) Portable Water Level (in development) SLAC Calibration Laboratories: Sector 10: Horizontal and Vertical Comparators Heavy Fab: K&E Optical Comparator Instruments and Tooling (2)

6. October 20-21, 2005 Internal LCLS Undulator Alignment and Motion Review Catherine LeCocq, SLAC lecocq@slac.stanford.edu 6 Parametric Model: Stochastic Model: Least Squares Solution: Free Net Solution: Recent Example of Network Design: Parametric Model: Stochastic Model: Least Squares Solution: Free Net Solution: Recent Example of Network Design: Network Design http://www-group.slac.stanford.edu/met/Align/TechAnalysis/2004/GLAST-Network.pdf

7. October 20-21, 2005 Internal LCLS Undulator Alignment and Motion Review Catherine LeCocq, SLAC lecocq@slac.stanford.edu 7 Warning: This simulated network is based on very crude undulator dimensions. It is made to present typical laser tracker-precise leveling network capabilities. Further studies should involve in particular real undulator hall drawing and in-situ instrument analysis. Simulation facts: Tunnel dimensions: 130 m long, 5 m wide and 2 m high Quad spacing based on current LCLS deck, positioned arbitrarily in the tunnel (1/3 of the width) Floor is 1.0 m below beamline, wall monuments are 0.75 m above beamline, laser tracker set-ups are 0.4 m and 0.6 m above beamline. Observation a-priori standard deviations: Distances 30 µm Horizontal angles 30 µm / D Vertical angles 50 µm / D Height differences 50 µm Free network approach Warning: This simulated network is based on very crude undulator dimensions. It is made to present typical laser tracker-precise leveling network capabilities. Further studies should involve in particular real undulator hall drawing and in-situ instrument analysis. Simulation facts: Tunnel dimensions: 130 m long, 5 m wide and 2 m high Quad spacing based on current LCLS deck, positioned arbitrarily in the tunnel (1/3 of the width) Floor is 1.0 m below beamline, wall monuments are 0.75 m above beamline, laser tracker set-ups are 0.4 m and 0.6 m above beamline. Observation a-priori standard deviations: Distances 30 µm Horizontal angles 30 µm / D Vertical angles 50 µm / D Height differences 50 µm Free network approach Undulator Hall Network

8. October 20-21, 2005 Internal LCLS Undulator Alignment and Motion Review Catherine LeCocq, SLAC lecocq@slac.stanford.edu 8 Undulator Hall Network Simulation W23 sz = 22 μm sx = 47 μm sy =46 μm

9. October 20-21, 2005 Internal LCLS Undulator Alignment and Motion Review Catherine LeCocq, SLAC lecocq@slac.stanford.edu 9 number of laser tracker set-ups: 17 number of points: 49 (16 floor, 33 wall) number of triplets:173 number of height differences: 81 number of coordinate unknowns: 198 number of nuisance parameters: 51 number of datum parameters: 4 number of laser tracker set-ups: 17 number of points: 49 (16 floor, 33 wall) number of triplets:173 number of height differences: 81 number of coordinate unknowns: 198 number of nuisance parameters: 51 number of datum parameters: 4 Network Simulation Facts

10. October 20-21, 2005 Internal LCLS Undulator Alignment and Motion Review Catherine LeCocq, SLAC lecocq@slac.stanford.edu 10 Example of Single Total Station Set-up Single TC2002 Set-up sD = 100 μm sh = 50 μm/D sv = 50 μm/D “Plate15” sz = 83 μm sx = 108 μm sy = 72 μm

11. October 20-21, 2005 Internal LCLS Undulator Alignment and Motion Review Catherine LeCocq, SLAC lecocq@slac.stanford.edu 11 Definition given in LCLS TN-03-08 Undulator Coordinate System x,y,z SLAC linac SLAC-SLC system x’,y’,z’ LCLS Undulator

12. October 20-21, 2005 Internal LCLS Undulator Alignment and Motion Review Catherine LeCocq, SLAC lecocq@slac.stanford.edu 12 Gather records for last mapping survey and wait for BBA to put all quads in line. Align the “loose end” of each girder with respect to the next quadrupole. Solve the last girder loose end. Gather records for last mapping survey and wait for BBA to put all quads in line. Align the “loose end” of each girder with respect to the next quadrupole. Solve the last girder loose end. Alignment after Installation

13. October 20-21, 2005 Internal LCLS Undulator Alignment and Motion Review Catherine LeCocq, SLAC lecocq@slac.stanford.edu 13 End of Presentation In conclusion, the current undulator alignment concept is solidifying. The conventional alignment part is well integrated and relies on previous experience.