The LCLS Undulator System Overview Stephen Milton LCLS

The LCLS Undulator System Overview Stephen Milton LCLS FAC Review April 28 - 29, 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

Brief LCLS Overview Undulator Systems WBS 1. 4 2 Pioneering Science and Technology LCLS FAC Review: April 28 -29 2004 ANL Office of Science U. S. Department of Energy

Present Relationship within LCLS Project Engineering and Design Organization 2004 UCLA 3 Pioneering Science and Technology LCLS FAC Review: April 28 -29 2004 ANL Office of Science U. S. Department of Energy

Undulator Hall Layout 4 Pioneering Science and Technology LCLS FAC Review: April 28 -29 2004 ANL Office of Science U. S. Department of Energy

Laboratory Relationship and L 3 Organization APS LCLS Undulator LCLS Project J. M. Gibson S. Milton J. Galayda Assoc. Lab. 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 5 Pioneering Science and Technology LCLS FAC Review: April 28 -29 2004 ANL Office of Science U. S. Department of Energy

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 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 6 Pioneering Science and Technology LCLS FAC Review: April 28 -29 2004 ANL Office of Science U. S. Department of Energy

Full Length Prototype Undulator Module 7 Pioneering Science and Technology LCLS FAC Review: April 28 -29 2004 ANL Office of Science U. S. Department of Energy

3 -D Pro. E Model of Prototype Module 8 Pioneering Science and Technology LCLS FAC Review: April 28 -29 2004 ANL Office of Science U. S. Department of Energy

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 9 Pioneering Science and Technology LCLS FAC Review: April 28 -29 2004 ANL Office of Science U. S. Department of Energy

Recent Highlights: K Setpoint--Canted Poles • • • 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 10 Pioneering Science and Technology LCLS FAC Review: April 28 -29 2004 ANL Office of Science U. S. Department of Energy

Undulator Assembly Schematic 11 Pioneering Science and Technology LCLS FAC Review: April 28 -29 2004 ANL Office of Science U. S. Department of Energy

Short Break Assembly 12 Pioneering Science and Technology LCLS FAC Review: April 28 -29 2004 ANL Office of Science U. S. Department of Energy

Long Break Schematic 13 Pioneering Science and Technology LCLS FAC Review: April 28 -29 2004 ANL Office of Science U. S. Department of Energy

Entrance Section Schematic 14 Pioneering Science and Technology LCLS FAC Review: April 28 -29 2004 ANL Office of Science U. S. Department of Energy

Exit Section Schematic 15 Pioneering Science and Technology LCLS FAC Review: April 28 -29 2004 ANL Office of Science U. S. Department of Energy

Support Interface 16 Pioneering Science and Technology LCLS FAC Review: April 28 -29 2004 ANL Office of Science U. S. Department of Energy

Interface to Conventional Facilities • ANL provides to SLAC CF (David Saenz) input per request 17 Pioneering Science and Technology LCLS FAC Review: April 28 -29 2004 ANL Office of Science U. S. Department of Energy

Magnet Measurement Facility • • 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 18 Pioneering Science and Technology LCLS FAC Review: April 28 -29 2004 ANL Office of Science U. S. Department of Energy

Roll Away Undulators • Horizontal Version Conceptual Diagram 19 Pioneering Science and Technology LCLS FAC Review: April 28 -29 2004 ANL Office of Science U. S. Department of Energy

Issues: Undulator • • • Stability over time - Temperature is very critical - Tight temperature specifications are being placed on the undulator hall 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 micron levels is very challenging Tight Schedule - Trying to come up “clean” procurement strategies 20 Pioneering Science and Technology LCLS FAC Review: April 28 -29 2004 ANL Office of Science U. S. Department of Energy

Vacuum System • • Vacuum Chamber - Many Designs and Design Options Explored - Surface roughness - Definition - Achieving - Electro polishing of Cu explored - New idea of using flow polishing being pursued Prototyping - To begin soon Cu-SS Brazing II SS 316 L I Cu-Cu E-beam Tack Welding OFHC Cu 4 x E-Beam UHV Welding Leak Check 6 mm 0. 1 8 mm 0. 2 Cu-Coated on mirror-finished SS 316 L strips (1. 5 mm thick) 21 Pioneering Science and Technology LCLS FAC Review: April 28 -29 2004 ANL Office of Science U. S. Department of Energy

Diagnostics • • • No Intraundulator x-ray diagnostics - Now an R&D task End-of-undulator x-ray diagnostics - In the process of optimization - The need for roll away undulators Other Diagnostics - In the design process - RFBPM - Prototype is critical, but early tests in Japan have already been performed 22 Pioneering Science and Technology LCLS FAC Review: April 28 -29 2004 ANL Office of Science U. S. Department of Energy

Controls • Various interfaces to SLAC - EPICS -> SLAC interface - Timing interface - See J. Stein’s and B. Delesio’s talks 23 Pioneering Science and Technology LCLS FAC Review: April 28 -29 2004 ANL Office of Science U. S. Department of Energy

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 CD 1 estimates - Refine and create logic in MSProject - Transfer to P 3 (Primavera Project Planner) - Use P 3 experts to get under control: F. Clark (ANL), J. Chan (AIM/SLAC) S. Thompson (CH 2 M Hill Consultant) - Twice weekly scrubbing with SLAC via Netmeeting 24 Pioneering Science and Technology LCLS FAC Review: April 28 -29 2004 ANL Office of Science U. S. Department of Energy

Effort and Cost Profile • • Additional Scrubbing will be done prior to the EIR to further refine our numbers. PED, Construction, and OPC Included 25 Pioneering Science and Technology LCLS FAC Review: April 28 -29 2004 ANL Office of Science U. S. Department of Energy

Schedule and Cost Issues • • Expected very rapid buildup in force - Murray Gibson (ANL Associate Laboratory Director APS) 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 26 Pioneering Science and Technology LCLS FAC Review: April 28 -29 2004 ANL Office of Science U. S. Department of Energy

Major Events/Milestones • • • Long Lead Procurements - Must be “out the door” Oct/Nov 2004 Construction of Undulators - Would like 1 st article delivery in FY 05 to ease the schedule - Must have assembly started beginning of FY 06 (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 33 rd Magnet Arrives - March 07 July 07 - Expect undulator system installation complete 27 Pioneering Science and Technology LCLS FAC Review: April 28 -29 2004 ANL Office of Science U. S. Department of Energy

Past DOE Reviews: CD 1 and CD 2 a • • • Manufacturing Concerns, Materials, Tolerances, etc. - 1 st prototype report provides summary - http: //www. aps. anl. gov/xfd/tech_bulletins/List_of_TBs. html - ANL/APS/TB-48 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-2 b acceptance) Costing issues - Changes in costs between CD 1 and CD 2 a are understood - ANL will make the major procurements Pioneering Science and Technology LCLS FAC Review: April 28 -29 2004 ANL Office of Science U. S. Department of Energy 28

Past DOE Reviews: CD 1 and CD 2 a • • Schedule - Understood, but will be tight along the undulator path Staff vs. Funding - Allocated $1. 18 M for FY 04 - Trimmed number of FTE to ~8 by moving some PED work into FY 05 - FY 05 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 29 Pioneering Science and Technology LCLS FAC Review: April 28 -29 2004 ANL Office of Science U. S. Department of Energy

Past Reviews: Undulator Magnet (Nov 03) • • Phase Adjusters - 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 Sm 2 CO 17 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 30 Pioneering Science and Technology LCLS FAC Review: April 28 -29 2004 ANL Office of Science U. S. Department of Energy

Past Reviews: Undulator Magnet (Nov 03) • • • Thermal Control - Stringent requirements built into tunnel for support stability 2 nd Prototype - Will not be built - Focus is now on 1 st 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. 31 Pioneering Science and Technology LCLS FAC Review: April 28 -29 2004 ANL Office of Science U. S. Department of Energy

Past Workshops (Project Agreement Meetings) • • Parameters Meeting (October 03) - Purpose was to fix both K and lambda. U - Results - K decreased slightly to accommodate slightly lower electron beam energy (14. 1 Ge. V vs. 14. 35 Ge. V) 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 32 Pioneering Science and Technology LCLS FAC Review: April 28 -29 2004 ANL Office of Science U. S. Department of Energy

Undulator System Review: March 04 • • • System Integration - The committee felt we must focus attention on system integration. We agree. - However, effort since this review has been focused on preparation for the EIR. Staffing Profile - Again it is pointed out that the staffing increase into FY 05 is steep. We understand this and are doing our best to plan and prepare for it. Risk Registry and Issues Log - Keeping track of critical and near critical tasks. - Suggested the development of one. Again we agree that this is a good idea and will be implemented in the near future. 33 Pioneering Science and Technology LCLS FAC Review: April 28 -29 2004 ANL Office of Science U. S. Department of Energy

Undulator System Review: March 04 • • Nd. Fe. B vs. Sm 2 CO 17 - Committee not ready to endorse Nd. Fe. B material choice Committee would prefer to see variable strength quadrupoles Committee endorsed at least a manual retraction system for the undulator They suggest a thorough system prototyping even at the expense of a delay in the 1 st article undulator Defer prototyping the granite base Begin prototyping of vacuum systems BPM - Felt to be very near critical path. - It is and we will need to start moving on this soon. 34 Pioneering Science and Technology LCLS FAC Review: April 28 -29 2004 ANL Office of Science U. S. Department of Energy

Conclusion • • • A prototype undulator has been thoroughly tested and documented The vacuum chamber is ready to be prototyped Effort for x-ray diagnostics will be placed on the end-ofundulator diagnostics suite More effort will be placed on the RFBPM when resources become available Controls integration planning is starting and moving along well A schedule and basis of estimate has been constructed and is near ready for the EIR 35 Pioneering Science and Technology LCLS FAC Review: April 28 -29 2004 ANL Office of Science U. S. Department of Energy