1. Undulator Alignment Plan
LCLS Project Lehman Review
February 7 - 9, 2006
Catherine LeCocq
SLAC
Alignment Engineering Group

2. Planned Alignment Activities
Global Alignment
Monitoring Systems
Magnet Measurements Facility
Undulator Hall Tunnel Alignment

3. Agenda relative to Metrology
Internal LCLS Undulator Alignment and Motion Review
SLAC, October 20 & 21, 2005
Committee
Virgil Bocean (FNAL)
Gordon Bowden (SLAC)
Steve Marks (LBNL)
Will Oren, Chair (JLAB)
Agenda relative to Metrology
Component fiducialization
Two-tier alignment
Monitoring systems
Published report

4. Girder Alignment Sequence: Items to work on:
Fiducialization of all components
Assembly on girder and pre-alignment:
Combination MMF & other on-site locations
Final alignment on girder:
In MMF with CMM & local set-ups
Items to work on:
Handling
Storage

5. UN36_00060 = CMM Procurement
Leitz Reference Model CMM manufactured by Brown & Sharpe in Wetzlar (Germany) is on order.
It should be shipped after in-situ special tuning currently scheduled for the week of March 6th.
It is then expected to arrive at SLAC end of April.
CMM weight capacity is 3000 kg.
CMM measuring range is 0.9 x 1.5 x 4.5 meters.
CMM resolution is 0.1 microns or inches.
CMM spatial accuracy is a formula based on the length L (in mm):
Original: 2.0 microns + L/350
Special calibration for undulator segment: 1.5 microns + L/500.

6. Tolerance for Girder Alignment
Component Alignment on Girder
RMS Value
Quadrupole in both horizontal directions
125 µm
Quadrupole in vertical direction
60 µm
BFW in both horizontal directions
100 µm
BFW in vertical direction
55 µm

7. Production Measurements
MMF Schedule
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Tuned
March 6
Shipped
March 20
@ SLAC
April 24
Commissioned
May 15
CMM
June 1
Completed
April 15
BENCH
MMF Ready To Measure
July 28, 2006
MMF Const Done
(Feb 17)
MMF BO
(Mar 6)
1st SLAC
(Jun 2)
May 1
Ready to Measure
July 28
Production Measurements
August 29, 2006

8. Tunnel Alignment Sequence: Items to work on:
Establish survey network in empty UH.
Mark bolt-hole floor positions for pedestals.
Align pedestals.
Survey girder components.
Final alignment & integration of monitoring systems.
Items to work on:
Finalize penetrations & other access.
Analyze mechanical requirements for cam movers.
Make a local controller for cam movers.
Allow schedule for repeated surveys due to tunnel movements.

9. Undulator Hall Tunnel Location
FEH Service Bldg
FEH
X-Ray Tunnel
CLOC
NEH
FEE
Beam Dump
Undulator Hall
BTH
BSY
LINAC

10. (with removable spherical target)
Survey Monuments
Extract from ESD Undulator Tunnel Survey Monument Positions B. Fuss
wall monuments
(with removable spherical target)
floor monument 6’
1‘ stay-clear

11. Undulator Hall Network
1600
1650
1700
1750
1800
1850
1900
1950
2000
2050
2100
2150
2200
2250
UH Tunnel Start
STA ft m
SLOPE
UH Tunnel West
Side Thermal Barrier
STA ft m
Undulator Hall Tunnel
BTH
Beam
Dump
24” Vertical Penetration
(approx. position)
sD = 30 μm sh = 30 μm / D sv =50 μm /D sdh = 50 μm
sz = 22 μm sx = 47 μm sy =46 μm

12. Tolerance for Tunnel Alignment
Girder Alignment in Tunnel
RMS Value
Quadrupole Deviation from Straight Line
100 µm
Quadrupole in longitudinal direction
500 µm
Undulator Segment Yaw
240 µrad
Undulator Segment Pitch
80 µrad
Undulator Segment Roll
1000 µrad

13. Undulator Hall Schedule
BO of UH in May 2007
Installation and survey of network: May through June 2007
Mark pedestal bolt locations and align pedestals: June through August 2007
Girders installed and aligned: September 2007 to June 2008
Final alignment and mapping complete by July 18, 2008

14. Current Preparation MMF Set-Up HLS and WPM Evaluation Network
Construction monuments
Tunnel penetrations
Assembly and Installation Support
Integration of monitoring systems
Evaluation and testing of portable CMM arm
Pedestal design

15. GPS Baseline Network

16. LCLS Construction Network
LCLSR002
LCLSR001
LCLS001
SLAC
NGS23
LCLS003
LCLS004
BMSA
LCLS002

17. Documentation Overall Plan Coordinate Systems Monumentation
PRD – Conventional Alignment System Requirements
Coordinate Systems
SLAC-TN LCLS Undulator Coordinate System
NAD83-SPCS-CA Lambert Zone 3, see AEG web page:
ESD Height Systems for LCLS Construction
Monumentation
ESD LCLS Alignment Construction Requirements
ESD Undulator Tunnel Survey Monument Positions
Specialized Alignment Systems
ESD – Hydrostatic Leveling System Specifications