The AMO Instrument John Bozek, LCLS

1. The AMO Instrument John Bozek, LCLS • Location Change • Scientific Motivation • Design Status • Next Steps: • Procurement/fabrication • Assembly • Testing • Controls • Schedule

2. The AMO InstrumentJohn Bozek, LCLS • Represents work of many people: • Team leaders: Lou DiMauro, Nora Berrah, Linda Young, Phil Bucksbaum • Engineering: Jean Charles Castagna, Michael Holmes, Michael Kosovsky, Nadine Kurita • Laser: Greg Hayes, Bill White • LCLS Management: Stefan Moeller, John Arthur • With apologies to whomever I’ve forgotten

3. LCLS Experimental Halls Near Experimental Hall X-ray Transport Tunnel AMO SXR XPP XCS CXI Far Experimental Hall

4. Location of AMO experiment has changed… • AMO on soft x-ray branch 800-2000 eV

5. Unique properties of LCLS radiation

6. Scientific Goals of the AMO instrumentation • Investigate multiphoton and high-field x-ray processes in atoms, molecules and clusters • Multi-photon ionization/excitation in atoms/molecules/clusters • Accessible intensity on verge of high-field regime • Study time-resolved phenomena in atoms, molecules and clusters using ultrafast x-rays • Inner-shell side band experiments • Photoionization of aligned molecules • Temporal evolution of state-prepared systems

7. AMO Instrument • Optics • High Field Physics Chamber • Gas jet • Electron TOFs • Ion spectrometers • X-ray spectrometers • Chamber, shielding, pumping, shutter, etc • Diagnostics Chamber • Magnetic bottle electron spectrometer • Beam screens • Pulse energy monitor • Pulse picker

8. AMO Instrument

9. Final Design Review of Stands & Chambers • July 18th

10. Considered beam mis-steer Diagnostics HFP Beam stop Beam direction B4C aperture B4C aperture Differential pumping B4C tube Differential pumping B4C tube

11. Final Design Review of HFP Instrumentation • September 3rd 5 x ETOF High field physics chamber instruments • 5 x ETOF adjustable aiming at IR • 1 ITOF with 3 options • Gas jet with adjustable positioning Interaction Region X-ray beam Gas jet Ion TOF (3 options)

12. Final Design Review of Beam path components – Oct 1st Beam, fixed viewer 3 Beam, fixed viewer 2 Beam, fixed viewer 1 Differential pumping 3 Beam viewing screen 1 Beam viewing screen 2 Differential pumping 2 Differential pumping 1 Beam viewing paddle 1

13. Remaining work to be Reviewed: • Focusing optics • Design/fab under contract with LBNL (Kelez) • Substrates ordered – 400mm long Si flats • Review expected in November • Magnetic Bottle Electron Spectrometer • Design/fab contract with Ohio State University • Already have a prototype – testing with laser • Review also expected in Nov.

14. Remaining work to be Reviewed: • Fluorescence Spectrometers • Late deliverable (i.e. not for first science) • Difficulty determining appropriate solution…grating vs. crystal, etc. • Slits, pulse picker • Recently separated slits from mirror tank – allowing us to pursue commercial solution • Pulse picker commercially available – late deliverable

15. Procurement • Utilize the LCLS procurement team • Hoping to use the Mechanical Fabrication Department (MFD) of SLAC to manage procurement/assembly • MFD tracks parts from order through assembly

16. Assembling the AMO Instrument • Assembly in the MFD vacuum shops by MFD vacuum technicians • Clean rooms • Vacuum bake-out • Welding/machining

17. Testing – first step is getting tables moving Moving frame Slave stages XY Inclinometer Spherical bearing joints Motorized stages XY Stiffening struts Motorized stages Z Anchored frame Wheeled Jacks (Alternatively, can mount on sides)

18. Tables interlocked to two mechanisms: • Bellows protection mechanism • Tilt switch to prevent roll

19. Controls & Data Acquisition • EPICS will be used to control instrumentation • All motions, voltages, etc. under remote control • Test-stands in G. Haller’s labs

20. Controls & Data Acquisition • Acqiris DC282 high-speed 10-bit cPCI Digitizer (8) • 4 channels • 2-8 GS/s sampling rate • Acquisition memory from 1024 kpoints to 1024 Mpoints (optional)‏ • Low dead time (350 ns) sequential recording with time stamps • 6U PXI/CompactPCI standard, 64 bit, 66 MHz PCI bus • Sustained transfer rate up to 400MB/s to host SBC

21. What’s there July 2009? • Focusing Optics • High Field Physics Chamber • Pulsed gas jet • Ion TOF (Wiley McLaren type) • Electron TOFs • Diagnostics • Effusive gas jet • Magnetic bottle TOF • Beam screens • Synchronized Laser

22. And what’s commissioned later ? • Pulse picker(12/09) • High Field Physics Chamber • Velocity map imaging ion spectrometer(10/09) • Momentum resolving ion spectrometer (reaction microscope/ColTRIMS)(2/10) • X-ray spectrometers(1/10) • Diagnostics • Pulse energy monitor(11/09)

23. Schedules • Ready to start ordering equipment – now! • Jan - May 2009 – Assembly • Feb - May 2009 – offline testing of controls • May 2009 – install in hutch • June 2009 – laser based testing • August 2009 – FEL testing • September 2009 – User Operations !