1. Hal Tompkins FEE/FEL CommissioningTompkins@slac.stanford.edu June 16, 2008 1 FEE/FEL Commissioning Overview By Hal Tompkins Photon Beam Systems Deputy Presentation to the Facility Advisory Committee June 16, 2008

2. Hal Tompkins FEE/FEL CommissioningTompkins@slac.stanford.edu June 16, 2008 2 Outline Commission FEE Instruments Offset mirror commissioning SASE optimization AMO experiment alignment User Operations at ~4 GeV

3. Hal Tompkins FEE/FEL CommissioningTompkins@slac.stanford.edu June 16, 2008 3 Related Presentations Paul Emma, Commissioning Results and Plans H.D. Nuhn, LTU and Undulator Commissioning Plans Richard Bionta, FEE Diagnostics and Commissioning John Bozek, AMO Instrument

4. Hal Tompkins FEE/FEL CommissioningTompkins@slac.stanford.edu June 16, 2008 4 LCLS Installation and Commissioning Time-Line LTU/Und/Dump Install LTU/UndComm. Re-commission Inj/BC2 to SL2 First Light in FEE PEP-II run ends FEE/NEH Install PPS Cert. LTU/Dump FEH Install CD-4 (7/31/2010) X-Rays in NEH First Light in FEH NEH Operations/ Commissioning JJFFMMAAMMJJJJAASSDDJJFFMMAAMMJJJJAASSOONNDDJJFFMMAAMMJJJJ ON A A 2008 2009 2010 2008 2009 2010 Down PPS A A M M now Linac/BC2 Commissioning FEEComm. June 16, 2008 FEH Hutch BO Und. Seg. Install

5. Hal Tompkins FEE/FEL CommissioningTompkins@slac.stanford.edu June 16, 2008 5

6. Hal Tompkins FEE/FEL CommissioningTompkins@slac.stanford.edu June 16, 2008 6 Readiness Reviews FEE/NEH Beam Readiness Reviews to be held in March- April 2009 time frame AMO Experiment Readiness Review in June-July 2009 X-Ray Tunnel/FEH Beam Readiness Reviews to be held in November-December 2009 time frame

7. Hal Tompkins FEE/FEL CommissioningTompkins@slac.stanford.edu June 16, 2008 7 FEE Commissioning - Initial Conditions Start with single undulator 13.6 GeV electrons 0.2 nanocoulombs 10 Hz

8. Hal Tompkins FEE/FEL CommissioningTompkins@slac.stanford.edu June 16, 2008 8 FEE Instrument Commissioning 5/15 to 6/25 Conduct FEE Beam readiness review in Mar.-Apr., 2009 Open Dump stoppers, RP initial survey (1-2 d) Insert Direct Imager, check upstream apertures (1-2 d) Commission adjustable slits (1-2 d) Insert all undulators, 13.6 GeV electrons, RP survey (2-3 d) Insert gas attenuator apertures, check alignment (1-2 d) Commission gas attenuator/solid attenuators (1-2 d) Center reticule on beam, project through C1 (1-2 d) Decide if OMS realignment is necessary (+/- 1mm range) (0-5 d)

9. Hal Tompkins FEE/FEL CommissioningTompkins@slac.stanford.edu June 16, 2008 9 FEE Instrument Commissioning (cont.) Commission gas detectors (2-4 d) apertures inserted add gas power magnet compare APD & PMT response to attenuation Commission K-monochromator (4-6 d) Transmit beam through 4 bounces (~8.172 eV) Checkout quadrant photodiode (keep intensity low) Measure x-ray energy, undulator bandwidth Measure photon flux (part of CD4 goals) (1 d)

10. Hal Tompkins FEE/FEL CommissioningTompkins@slac.stanford.edu June 16, 2008 10 Offset Mirrors 6/26 to 7/16 Tune linac for appropriate energy Begin with soft x-ray offset mirror system (SOMS) Insert M1S, use P1 to set angle, translation (2-4 d) Insert M2S, use P2S to set angle, translation (1-2 d) Insert M3S2, use P3S2 to set angle, translation (1-2 d) Retract M3S2 and insert M3S1, use P3S1 to set angle, translation (1-2 d) Retract M1S and apply same procedure to HOMS (3-5 d) Priority is SOMS for hutch 2 - delivers beam to AMO experiment

11. Hal Tompkins FEE/FEL CommissioningTompkins@slac.stanford.edu June 16, 2008 11

12. Hal Tompkins FEE/FEL CommissioningTompkins@slac.stanford.edu June 16, 2008 12

13. Hal Tompkins FEE/FEL CommissioningTompkins@slac.stanford.edu June 16, 2008 13 Offset Mirrors (cont.) Open hutch stoppers to AMO experiment RP surveys - insure full intensity through C4S2 Begin AMO experiment alignment

14. Hal Tompkins FEE/FEL CommissioningTompkins@slac.stanford.edu June 16, 2008 14 SASE Optimization 7/17 to 8/13 Change linac to 4.52 GeV (nominal 908 eV), check beam center with K-mono (keep intensity low, 1-2 d) Switch to direct imager, look for FEL (should be able to see signals ≥100 nJ) If unable to find FEL, measure undulator K values Change linac back to 13.56 GeV, 10 Hz Use K-mono to measure spectrum (3-5 d) Optimize SASE (vary bunch compression, emittance, RF, BBA, etc.) Above 50  J, imager saturates, need gas attenuator

15. Hal Tompkins FEE/FEL CommissioningTompkins@slac.stanford.edu June 16, 2008 15 SASE Optimization (cont.) If FEL reaches ~0.1-1.0 mJ, commission calorimeter (3-5 d) Need to limit linac to 10 Hz Once calorimeter is commissioned, cross-calibrate the gas detectors and the direct imager (2-3 d) Measure position stability Electron energy stability already < 0.1% (at end of linac) During off-hours, deliver beam to AMO experiment

16. Hal Tompkins FEE/FEL CommissioningTompkins@slac.stanford.edu June 16, 2008 16 AMO Experiment HF Physics chamber will be in place by May 1, 2009 Laser will be ready at the same time Commissioning of laser transport to AMO exp. begins Diagnostics chamber to be in place June, 2009 KB optics delivered in May or June, 2009 Begin aligning KB optics, HF physics chamber, and diagnostics chamber in mid-July

17. Hal Tompkins FEE/FEL CommissioningTompkins@slac.stanford.edu June 16, 2008 17 Summary Very tight schedule between first beam to FEE and User Run - driven by FY08 budget limitations. Very tight schedule between AMO experiment installation and User Run - driven by FY08 budget limitations. We think the goal of achieving lasing at 1.5 nm by Aug.- Sep., 2009 is reasonable Experiments in Fall, 2009 are not part of CD 4 goals