The LCLS Undulator System
Overview
Stephen Milton
LCLS Undulator Review
March 3 -> 4, 2004
Argonne National Laboratory
Office of Science
U.S. Department of Energy
A U.S. Department of Energy
Office of Science Laboratory
Operated by The University of Chicago
Charge to Committee
• The Primary Focus of this Review
- Review and evaluate the complete undulator system design.
- Is the maturity of the design known to the level of detail to
justify setting the cost and schedule performance baseline at
this time?
- Identify any open design issues that should be addressed
prior to setting the baseline.
- Is the management team adequately structured for completing
the LCLS design?
- Are there adequate resources and of the correct skill type to
meet the needs of the project?
- Is the project progressing adequately?
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Additional
• Expert Eyes
- We are looking for your expertise to provide additional guidance
and oversight to the undulator system. This would include
suggestions ranging from management structure to technical
items to cost and schedule planning.
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Why this Review Now?
• Originally Slated for November 2003
•
•
- We were not ready then. There were too many open issues.
- Details of the parameter choice for the undulator
- Details of the diagnostics and commissioning plan
Instead we did this following
- Parameters workshop (Oct. 03)
- Reviewed the undulator magnet (Nov. 03)
- Diagnostics commissioning workshop (Jan. 04)
- Worked liked crazy on the Cost/Schedule
Now preparing for
- External Independent Review (April/May 04)
- Baselining of the Cost and Schedule
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Past DOE Reviews: CD1 and CD2a
• Manufacturing Concerns, Materials, Tolerances, etc.
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•
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- 1st prototype report provides summary
- No known show stoppers
Procurement strategies and QA
ANL Management Backing
BPM tests
- Funding not sufficient to meet Sept 04 deadline
Dedicated experienced team for procurement
- Established
- QA plan not yet in place (Required for CD-2b acceptance)
Costing issues
- Changes in costs between CD1 and CD2a are understood
- ANL will make the major procurements
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Past DOE Reviews: CD1 and CD2a
• Schedule
•
•
•
- Understood, but will be tight along the undulator path
Staff vs. Funding
- Allocated $1.4M
- Trimmed number of FTE to ~8 by moving some PED work into
FY05
- FY05 rapid increase in staffing has support of ANL management
Organization
- Matrixing between SLAC and ANL has been implemented, but
not completely formalized
Procurement options for LLP and Undulator Assemblies
- Still being studied in depth for optimization and fit to BA
- Will organize a separate review of this activity before release
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Past Reviews: Undulator Magnet (Nov 03)
• Phase Adjusters
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•
•
- Additional studies have been performed; however,
- at present we have decided not to implement them
Comb Shunt
- Only minor additional work was done on this.
- We have decided not to implement it. (too complex).
Canted Jaws
- We have tested and decided to use this idea.
- Thank You Undulator Committee and Especially J. Pflueger
Sm2CO17 Advantage?
- Not as much of an advantage as previously thought
- Too many open issues. Not enough time and money
- APS to pursue this on their own
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Past Reviews: Undulator Magnet (Nov 03)
• Thermal Control
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•
- Stringent requirements built into tunnel for support stability
2nd Prototype
- Will not be built
- Focus is now on 1st article acquisition
Production/Procurement Plans
- We are starting to work through these details.
- A formalized risk assessment of the varios options has not yet
been performed.
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Past Workshops (Project Agreement Meetings)
• Parameters Meeting (October 03)
•
- Purpose was to fix both K and lambdaU
- Results
- K decreased slightly to accommodate slightly lower electron
beam energy (14.1 GeV vs. 14.35 GeV)
Diagnostics/Commissioning Meeting (Jan 04)
- Purpose was to establish a commissioning plan based on an
achievable set of diagnostics
- Results
- There will not be any intraundulator x-ray diagnostics.
- We will rely on end-of-undulator diagnostics for x-ray
characterization plus a roll away undulator option
- Even these are difficult and still under study
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Brief LCLS Overview
Undulator Systems WBS 1.4
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Undulator Hall Layout
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Present Relationship within LCLS
LCLS Project
Engineering and
Design
Organization 2004
UCLA
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Laboratory Relationship and L3 Organization
APS
LCLS Undulator
LCLS Project
J.M. Gibson
S. Milton
J. Galayda
Assoc. Lab. Director
Project Director
Project Director
Accel. Systems. Div.
D. Walters
R. Gerig
Vacuum/Diagnostics
Division Director
CAM
Exp. Facilities Div.
M. White
E. Gluskin
Magnet Systems
Division Director
CAM
APS Operations Div.
J. Stein
W. Ruzicka
Controls
Division Director
CAM
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LCLS Undulator System PED Org. (Present)
SLAC/AIM
S. Milton
ANL Indirect
J. Chan
LCLS Undulator Sys.
Support
PMCS Manager
F. Coose, Project Analyst
As needed
F. Clark, PMCS
D. Walters
M. White
J. Stein
Vacuum/Diagnostics
Magnet Systems
Controls
CAM
CAM
CAM
J. Bailey, ME (NE)
I. Vasserman, Phy
Contract
S.H. Lee, ME
R. Dejus, Phy
B. Delesio
B.X. Yang, Phy
E. Traktenberg, ME
G. Lawrence, ME
E. Moog, Phy
SLAC
R. Ruland
Mag. Meas. Fac.
J. Welch
Fixed Support
Interfaces
• This is not a complete list as
we have drawn heavily from
others within ANL and
SLAC, but at a lower fraction
than those listed
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Schedule and Cost Creation
• Level of Effort
•
- The LCLS undulator team has devoted most of its effort over the
last 6 months towards the generation of an integrated cost and
schedule
Methodology
- Start from CD1 estimates
- Refine and create logic in MSProject
- Transfer to P3 (Primavera Project Planner)
- Use P3 experts to get under control: F. Clark (ANL), J. Chan
(AIM/SLAC) S. Thompson (CH2M Hill Consultant)
- Twice weekly scrubbing with SLAC via Netmeeting
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Effort and Cost Profile
• Additional Scrubbing will be done prior to the EIR to further
•
refine our numbers.
PED, Construction, and OPC Included
Effort Profile (FTE)
Cost Profile ($M)
30
25.0
25
20.0
20
15.0
SLAC
SLAC
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ANL
ANL
10.0
10
5.0
5
0.0
0
FY04
FY05
FY06
FY07
FY08
FY04
FY05
FY06
FY07
FY08
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Schedule and Cost Issues
• Expected very rapid buildup in force
•
- Murray Gibson has already been made aware of this and is
ready to work with us to ensure adequate resources are made
available
- Continues to stress that LCLS is a Top Priority of the APS
- Have already enlisted additional engineering support for this
year
- Will be working on procurement packages as well as
technical issues so that when the money arrives we are
ready to go
Tight Scheduling due to FY boundary issues
- Work continues on developing solid procurement strategies
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LCLS Undulator System Review: March 3->4 2004 ANL
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Major Events/Milestones
• Long Lead Procurements
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•
•
•
- Must be “out the door” Oct/Nov 2004
Construction of Undulators
- Would like 1st article delivery in FY05 to ease the schedule
- Must have assembly started beginning of FY06 (when
construction funds arrive)
Magnet Measurement Facility
- Need to get a magnet to them soon (by end of calendar year) to
begin initial controls integration
33rd Magnet Arrives
- March 07
July 07
- Expect undulator system installation complete
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LCLS Undulator System Review: March 3->4 2004 ANL
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Undulator Assembly Schematic
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LCLS Undulator System Review: March 3->4 2004 ANL
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Short Break Assembly
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Long Break Schematic
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Entrance Section Schematic
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Exit Section Schematic
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Support Interface
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Interface to Conventional Facilities
LCLS Tunnel Layout
• ANL provides to
15 ft Wide
Fire
Sprinkler
HVAC
Light
Light
SLAC CF (David
Saenz) input per
request
HVAC
24" Tray
2.0 m
Undulator
10 ft Tall
H2O In
H2O Out
1.5 m Support
Air
GRD
Rev. 1
8/28/03
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LCLS Undulator System Review: March 3->4 2004 ANL
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Magnet Measurement Facility
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MMF is a SLAC Responsibility with ANL in Consulting Role
ANL Delivers Magnets to SLAC MMF
SLAC Personnel Measure and Tune Magnets
ANL/SLAC signoff on magnet and magnet becomes SLAC’s
responsibility
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LCLS Undulator System Review: March 3->4 2004 ANL
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Undulator
• How to set K
- Shimming
- 1 micron shims are not practical
- End Phase control
- Use unproven expensive piezo drives
- Might be useful to compensate temperature changes
- Back pole “comb” shunts
- Complex mechanics
- Canted poles
- Simple to implement
- Some issues with coupling to trajectory
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LCLS Undulator System Review: March 3->4 2004 ANL
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Recent Highlights: K Setpoint--Canted Poles
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•
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Average K Value Set by the
horizontal location
Has the additional possibility of
adding a small amount of
tapering in the future
See Isaac’s talk for
measurement results
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LCLS Undulator System Review: March 3->4 2004 ANL
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Recent Highlights:
No Intraundulator X-ray Diagnostics
• Due to power density issues these we determined to be very
•
high risk if left as a required diagnostics
- Relegated to an R&D topic
Will use an end-of-undulator diagnostics scheme instead
- See talks by Bingxin and Heinz-Dieter
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LCLS Undulator System Review: March 3->4 2004 ANL
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Issues: Undulator
• Stability over time
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•
- Temperature is very critical
- See Jim’s talk
What moves and what does not move
- BBA requires accurate control over the quad position.
- The quad position must be held accurately relative to the
undulator. This is particularly true in the vertical direction.
- Moving the undulator/quad assembly to micro levels is very
challenging
Tight Schedule
- Trying to come up “clean” procurement strategies
- See Marion’s talk
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Roll Away Undulators
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Horizontal Version Conceptual Diagram
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Roll Away Undulators
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Vertical Version Conceptual Diagram
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Issues: Vacuum
• Surface roughness
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Definition
Achieving
- See Dean and Soon-Hong’s talks
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LCLS Undulator System Review: March 3->4 2004 ANL
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Issues: Diagnostics
• X-ray diagnostics
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How will they work on the end
The need for roll away undulators
- See Bingxin’s and Heinz-Dieter’s talks
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LCLS Undulator System Review: March 3->4 2004 ANL
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Issues: Controls
• Various interfaces to SLAC
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EPICS -> SLAC interface
Timing interface
- See J. Stein’s talk
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LCLS Undulator System Review: March 3->4 2004 ANL
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Conclusion
• With respect to the present status of this project are we
•
•
positioned correctly?
- Have we fleshed out the scope well enough and is it well
enough understood to have the basis for a credible cost and
schedule (typical contingencies implied)?
- Organizationally are we credible?
Are there items in the scope that you view as a major risk?
Have we forgotten anything?
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LCLS Undulator System Review: March 3->4 2004 ANL
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