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LCLS-II Undulator Hall Monument Network

LCLS-II Undulator Hall Monument Network. Preliminary Design 06-15-2011. UH Monument Network - Hypothesis. UH tunnel: Width of UH tunnel: 5.8m => spread of wall monuments: 5.6m FEL Layout: Undulators are identical in the 2 FEL lines and placed in front of each other (not staggered)

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LCLS-II Undulator Hall Monument Network

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  1. LCLS-II Undulator Hall Monument Network Preliminary Design 06-15-2011

  2. UH Monument Network - Hypothesis • UH tunnel: • Width of UH tunnel: 5.8m => spread of wall monuments: 5.6m • FEL Layout: • Undulators are identical in the 2 FEL lines and placed in front of each other (not staggered) • Separation between the 2 FEL lines is 2.5m • Undulators facing inward • Undulator Design: • Top of the top jaw is at 2.1m (2.0 + 0.1 for open jaw) • Top motors are placed vertical

  3. UH Monument Network - Design • Wall monuments in middle of break sections at 2.3m above the floor • Floor monuments in front of every other undulator • For mapping, laser tracker position in the middle of the tunnel and in the middle of the break stations

  4. Top View • Other facts to consider: • Stay Clear area below the wall monuments for leveling purposes • Cable trays higher than 2.7 m from the floor • Position and size of electronic racks: • behind undulators not behind the break sections • lower than the top of the top jaw

  5. stay clear for line of sight Wall monument Wall monument 0.7m stay clear below wall monuments 0.7m stay clear below wall monuments Floor monument End View

  6. Undulator Hall 50m Long Section Mapping Simulation Line Legend Purple: Laser tracker observation Green : Height difference • Input: • 12 floor and 22 wall monuments • 11 laser tracker set-ups => 158 triplet observations: 30 µm and 0.5 mgon • 75 height differences: 50 µm • Mid Section Result (in meters): • F050 22.600000 -0.610000 0.020000 0.000013 0.000026 0.000019 • F060 27.000000 0.610000 0.020000 0.000013 0.000026 0.000019 • WN055 24.800000 2.800000 2.300000 0.000014 0.000029 0.000022 • WS055 24.800000 -2.800000 2.300000 0.000014 0.000029 0.000022

  7. One Laser Tracker Set Up Height range for laser tracker head: 2.1 – 2.4 meters

  8. UH Monument Network - Alternatives • Wider FEL line separation: 2.75m versus 2.5m • No significant changes (slightly better geometry) • Longer undulators: 5m versus 3.4m • Assumptions • Same break section layout • Simple 1 direction scaling for the undulator(jaws and frame) • Conclusions • Similar layout possible with fewer monuments => faster process

  9. Conclusion • Current proposed layout will produce similar a-priori statistics on coordinates as in LCLS-I with the following requirements: • Undulators facing inward • Similar undulator size and location for the 2 FEL lines • Top motor vertical • No obstruction above break sections • Required number of monuments about: • 3 times more than in LCLS-I • 2 times more for 5m long undulators • Required mapping time (once undulators installed) : • 2 times more than in LCLS-I • 1.5 times more for 5m long undulators

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