1. A U.S. Department of Energy Office of Science Laboratory Operated by The University of Chicago Argonne National Laboratory Office of Science U.S. Department of Energy Description of the LCLS Undulator System Stephen Milton

2. Overview Pioneering Science and Technology Office of Science U.S. Department of Energy

3. Undulator Systems WBS 1.2.3 Undulator Systems WBS 1.4 Pioneering Science and Technology Office of Science U.S. Department of Energy

4. UNDULATOR 3420 421 11528 mm Horizontal Steering Coil Vertical Steering Coil Beam Position Monitor 657 X-Ray Diagnostics Quadrupoles Cell structure of the LCLS Undulator Line 33 Undulators ~ 130-m Overall Length Pioneering Science and Technology Office of Science U.S. Department of Energy

5. List of the Undulator Line Systems Undulator module –Magnets –Poles –Strongback –Other Mechanical support - movers Quadrupole Lens Coils - correctors E-beam position monitors X-ray diagnostics Undulator vacuum chamber and diagnostics station Controls and data acquisition Support laboratory - magnet measurement facility –Technical Definition and Oversight Only Pioneering Science and Technology Office of Science U.S. Department of Energy

6. UCLA LCLS Project Engineering Design Organization Pioneering Science and Technology Office of Science U.S. Department of Energy

7. LCLS Undulator Management Project Leader S. Milton Fabrication Management J. Noonan Project and Contract Assistant F. Coose Diagnostics And Vacuum D. Walters Low Power X-ray Diag. High-Power X-Ray Diag. End of Und. X-ray Diag. Electron Beam Diag. Vacuum System Machine Protection System Controls J. Stein Magnet Systems X-ray Diagnostics Electron Beam Diagnostics Vacuum System Magnet Systems J. Noonan 2 nd Prototype Undulator Magnets Quadrupole Magnets Supports PED Organization Pioneering Science and Technology Office of Science U.S. Department of Energy

8. Prototypes Pioneering Science and Technology Office of Science U.S. Department of Energy

9. Field Variations –Must Maintain  B/B < 1 x 10 -4 Implies gap changes of < 1  m And to maintain temperature to within 0.4 C  Partial Compensation –Accomplished by Differential expansion of the titanium strong back and the aluminum magnet array comb. –This helped, but did not fully compensate the device –A Clever Field Control Scheme will be used Undulator Design Issue Pioneering Science and Technology Office of Science U.S. Department of Energy

10. Performance Measured to be within the Design Specification Full Length Prototype Pioneering Science and Technology Office of Science U.S. Department of Energy Device completed over a year and ½ ago.

11. 2 nd Prototype Pioneering Science and Technology Office of Science U.S. Department of Energy

12. Undulator System Schedule Pioneering Science and Technology Office of Science U.S. Department of Energy

13. MilestoneDate Design of 2nd undulator prototype complete2/04 Assembly and Testing of 2nd prototype undulator complete9/04 Bid package for undulator assembly complete7/1/05 First production undulator complete7/1/05 33rd production undulator complete6/1/07 Installation of undulator system complete7/1/07 Milestone Summary of Schedule Pioneering Science and Technology Office of Science U.S. Department of Energy See J. Noonan’s presentation for a more thorough summary and explanation

14. Where We Stand In the Project Engineering Design Phase Need to ramp up in staffing…quickly! 10 to 15 people working full time within 6 months to 1 year People will be drawn from APS and ANL when possible Contract work out as necessary Project will be Baselined in April 2004 Long-lead procurements begin in FY05 “Real” Construction begins in FY06 Undulator installed and ready to go in Summer 2007 First Operations in Winter 2008 Pioneering Science and Technology Office of Science U.S. Department of Energy

15. Charge for the LCLS Undulator Magnet Review Committee: Nov. 14th, 2003 1.Review the overall design and design/engineering decisions/solutions used for the 1st prototype undulator magnet and comment on the appropriateness of these decisions with respect to minimizing risk in meeting LCLS performance specifications. In particular, is this a robust design capable of being mass produced. 2.Assess the overall quality and appropriateness of the measurements and tuning methods. In particular, has a suitable set of measurements been carried out on the 1st prototype to prove that it has achieved the required specifications without undue difficulty in manufacturing, and has this design been proven to be sufficiently stable over time? 3.Based on the knowledge gained from the 1st prototype have the appropriate design modifications been made and, in your opinion, will they be successful in a mass produced device? 4.The 2nd prototype will be constructed in a manner similar to the acquisition plan for the production run. I would like your comments on the acquisition plan and schedule for the 2nd prototype and the production magnets. Pioneering Science and Technology Office of Science U.S. Department of Energy