AMO Commissioning Plans

1. AMO Commissioning Plans John Bozek May 14, 2009

2. So many parts, so little time… • Have a short time to prepare the instrumentation for user operations • KB optics to focus to 1 um • 6 electron spectrometers each with 8 HV PS’s • Two ion spectrometers • Laser (3 wavelengths) to overlap with FEL beam in two different locations • Three six-axes remote controlled stands coupled through thin-walled bellows • three separate gas supply systems • X-ray beam that can damage when focused

3. Schedule Constraints • Beam first available in July 09, limited by: • installation of instrumentation into hutch during June • connection of all controls and data acquistion cables • commissioning of 3 FEE soft x-ray mirrors • certification of radiation safety and personnel protection systems for NEH operations • Lasing of LCLS, although some work can be done with spontaneous radiation

4. Schedule Constraints - 2 • Want to begin user operations in FY09 • Began process >1yr ago with user outreach, first call for proposals, proposal evaluation, user workshops, etc • Selected 11 proposals for 1st run in Sept – Dec 2009 with first 7 using the LCLS - AMO instrumentation • Constraints consistent with a mid-September start of user run

5. Operations Schedule

6. AMO Commissioning Goals • Verify proper operation of all equipment necessary to carry out FY09 research • Include adequate time for requisite debugging and modifications • Both hardware and controls and data acquisition need to be checked out • Determine base line performance of spectrometers and diagnostics equipment • Resolution of spectrometers, sensitivity of diagnostics, signal rates as fcn of sample pressure

7. AMO Commissioning Goals - 2 • Gain experience with equipment, controls and LCLS FEL to be able to best support User Operations • Beamtime is extremely valuable – need to ensure that users get greatest benefit from their scheduled beamtime • Conduct some instrumental experiments to benefit the XFEL community for development of future diagnostics, methods, etc.

8. Human Resources • Commissioning will be led by AMO instrument scientists John Bozek and Christoph Bostedt • with support from design engineers Jean Charles Castagna and Michael Holmes • and controls group led by Remi Machet and data acquisition group led by Christopher O’Grady • And assistance from other LUSI instrument science staff (although they have day jobs) • Need 24/7 coverage with sufficient energy to interpret results and make changes • Roll right into user support for 4 months

9. Human Resources 2 • Need many more people – ideally three per shift with three shifts per day • Reached out to users to ask for commitment for them to send someone useful (i.e. not a green graduate student) for a period at least 3 weeks • Enormously positive response from all corners • LCLS also gains by having experienced users in first experimental • Requires active management by me…schedule to be proposed shortly

10. Human Resources 3 • Other sources of human resources include: • 3-way collaboration between x-ray FELS • Interest in sending an x-ray wavefront sensor (and people) from Germany – very useful for optimizing performance of KB optics • PRP assigned three proposals to commissioning period (each come with people) • Characterization of highly focused x-ray beams • Materials compatibility • Gas monitor detector cross calibration

11. Alignment • 1st step - need to align chamber to beam • Be able to switch from non-KB to KB operation

12. Alignment – 2 • Numerous 5mm apertures to get through • Fixed apertures will be prealigned • All include YAG preceding and following apertures

13. Alignment – 3 • Example of alignment tools • Use reproducibility of stepper motor positioned tables

14. Spectrometers • Initially commission spectrometers and diagnostics without focusing – to reduce riskof damage • Pulsed gas jet • Ion TOF spectro. • 5x electron TOFs • Ion imaging spectrometer

15. Diagnostics • Initially pulse energy monitor and beam screens available • Magnetic bottle spectrometer will arrive in July

16. Laser • Fundamental available in both chambers July 15 with harmonics in August • Laser useful for signal based commissioning of spectrometers in absence of FEL beam • First experiments do not require coincident laser • Like to try timing diagnostic (sidebands) with laser and magnetic bottle during commissiong if possible

17. Laser – 2 • Several mirrors available although changes require venting chamber Adjustable mirror assy Adjustment access flange (HFP chamber shown) To interaction region of HFP or Diagnostics Laser mirror Upstream diff. pumping Laser entry

18. Focusing Optics • More time spent on figuring measurement tool (LTP) at Berkeley is very valuable since want to change focal length – just in time delivery, currently scheduled for July 22

19. AMO Commissioning Schedule • Need to have an adaptable plan to take advantage of opportunities as they arise • Weeks 1 & 2: Alignment, ion spectrometer, gas jet • Week 3: electron spectrometers, pulsed extraction • Week 4: velocity map imaging spectrometer • Week 5: focusing optics • Week 6: magnetic bottle & laser overlap • Week 7: pulse energy, damage, focusing again • Week 8: ion & electron spectrometers again • Ready for first users in September!