1. X-ray Pump-Probe Instrument
David Fritz - XPP Instrument Scientist
J Brian Langton - XPP Lead Engineer
July 15, 2009

2. XPP Goals and Physics Requirements XPP Instrument Overview
Outline
XPP Science
XPP Goals and Physics Requirements
XPP Instrument Overview
WBS 1.2 Scope
Early Science Instrument
Major Component Status
Engineering/Design/Fabrication Status
Critical Path
Cost & Schedule Performance
Progress since April Status Review
Milestones
Summary

3. Time Resolved Scattering
The x-ray pump-probe instrument will take advantage of the ultrashort pulse duration of the LCLS to take snapshots of a photo-induced phenomena.
In general, the experiments performed as this endstation will use an ultrafast laser pulse to initiate a transient response in a system. The system will be probed using various x-ray scattering techniques. The time evolution of the response will be mapped by variably delaying the arrival time of the x-ray pulse with respect to the pump laser pulse.
The success of this end station will depend upon the ability to accommodate a wide variety of laser excitation techniques, samples, sample environments and x-ray scattering methods.
C. Siders

4. X-ray Pump-Probe Science
Phase Transitions
- Order / Disorder
- Metal/Insulator
Charge Transfer Reactions
- Photosynthesis
- Photovoltaics
- Vision
Vibrational Dynamics
Energy Dissipation and Flow
photo-
excitation
Stampfli and Bennemann Phys. Rev. B 49, 7299 (1994)
photo-
excitation
Page 4

5. XPP Instrument Goals\Requirements
Facilitate time-resolved X-ray scattering/spectroscopy using LCLS coherent hard x-rays (4-25 keV)
80 fs rms temporal resolution
Global Requirements (SP )
Capable of running in a shared beam mode using a future beam splitting monochromator
Instrument must be accessible while beam is delivered to FEH
Tailor and characterize X-ray and optical beam parameters
Spatial profile
Intensity
Repetition rate
Spectral bandwidth
Wavelength (optical laser)
Temporal profile (optical laser)
<1x10-7 Torr beamline vacuum

6. XPP Instrument Overview
Near Experimental Hall
X-ray Transport Tunnel
XPP
Endstation
Far Experimental Hall
Page 6

7. XPP Instrument Overview
Control Room
XPP
Endstation

8. XPP Instrument Overview
Photon Shutter
Intensity Monitor
Requirement
Device
Tailor X-ray spatial profile ( > 50 microns)
X-ray Slits
Tailor X-ray spatial profile ( < 50 microns )
X-ray Focusing Lenses
Tailor X-ray intensity and spectrum
Attenuators
Tailor X-ray repetition rate
Pulse Picker
Tailor X-ray spectrum
Harmonic Rejection Mirrors
Large Offset Monochromator
Characterize X-ray pulse intensity
Intensity Monitor
Characterize X-ray spatial profile
Profile Monitor
Sample orientation
Sample goniometer
Position X-ray area detector
Detector Mover
Measure X-ray scattering pattern
Detector
Photoexcitation of samples
Laser System
Characterize spatial profile, temporal profile, spectrum, intensity at a virtual sample
Laser Diagnostics
Slits
Profile Monitor
Monochromator
Intensity Monitor
Slits
Focusing Lenses
Attenuators
Pulse Picker
Mirrors
Slits
Intensity Monitor
Profile Monitor
Sample Goniometer
Detector Mover
Profile Monitor
Intensity Monitor
Photon Shutter

9. WBS 1.2 – Early Science/CD-4 Deliverables
CD-4 or Earlier
1.2.01
XPP System Integration & Design
1.3.01
XPP System Integration & Design
1.3.02
XPP X-ray Optics & Support Tables
1.2.03
XPP Laser System
1.2.03
XPP Laser System
Optics, Optomechanics & Diagnostics
Ti:Sapphire Laser
Optics & Optomechanics
Multipass Amplifier
Laser Diagnostics
Temporal Pulse Shaper
Hutch Optical Table System
Optical Parametric Amplifier
Optical Experiments
Laser Containment System
1.2.04
XPP Detector System (BNL)
XPP
1.2.05
XPP Sample Environment & Diffractometer System
XPP Sample Goniometer
XPP Detector Mover
1.2.06
XPP Hutch Facilities
1.2.07
XPP Vacuum System
XPP Vacuum Equipment
XPP Vacuum Hardware
XPP Spools & Bellows
XPP Vacuum Supports
1.2.08
XPP Installation
1.2.08
XPP Installation
1.5
Diagnostics and Common Optics
1.5
Diagnostics and Common Optics
Pop-in Profile Monitor
Large Offset Monochromator
DCO
Pop-In Intensity Monitor
X-ray Focusing Lenses
Intensity-Position Monitor
Harmonic Rejection Mirrors
Slit System
Attenuators / Filters
Pulse Picker
Controls
1.6
Controls and Data Acquisition
1.6
Controls and Data Acquisition
Early Science: Installation Early Finish – July 2010
CD-4: Installation Early Finish – May 2011

10. XPP Instrument Overview
Page 10

11. X-ray Optics and Diagnostics
Photon Shutter
Intensity Monitor
Slits
Profile Monitor
Monochromator
Intensity Monitor
Slits
Focusing Lenses
Attenuators
Pulse Picker
Requirement
Device
Tailor X-ray spatial profile ( > 50 microns)
X-ray Slits
Tailor X-ray spatial profile ( < 50 microns )
X-ray Focusing Lenses
Tailor X-ray intensity and spectrum
Attenuators
Tailor X-ray repetition rate
Pulse Picker
Tailor X-ray spectrum
Harmonic Rejection Mirrors
Large Offset Monochromator
Characterize X-ray pulse intensity
Intensity Monitor
Characterize X-ray spatial profile
Profile Monitor
Mirrors
Slits
Intensity Monitor
Profile Monitor
Sample Goniometer
Detector Mover
Profile Monitor
Intensity Monitor
Photon Shutter
DCO Details will be Discussed in the breakout

12. X-ray Optics Tables (1.2.2) Purpose
Support X-ray optics and diagnostics
Horizontally translate X-ray optics and diagnostics 600 mm
Engineering/Design/Fabrication Status
PDR completed August 27, 2008
FDR completed November 14, 2008
Earthquake analysis complete
Fabrication drawings completed
Granite PO placed April 14, 2009
Expected to be delivered in July w/ rails installed
Other parts procured in May and June
Anchor holes for the earthquake restraints already drilled

13. XPP Ultrafast Laser System (1.2.3)
Purpose
Sample photoexcitation
Engineering/Design/Fabrication Status
Laser containment and optical table system
Design review November 14, 2008
Laser tables are fabricated and are in storage in the control room.
Anchor holes are drilled and tables are ready to be installed once granite is installed
Enclosure PO placed April 20, 2009

14. 1.2.3 XPP Ultrafast Laser System
Engineering/Design/Fabrication Status
Laser diagnostics
RFP issued for 20 Ghz Oscilloscope
Bids are in and vendor selection in process
Optics and optomechanics
Various PO’s in process
Much more to be procured over the next 6 months
Multipass amplifier
Planning requisition in process for the pump lasers
Procurement authorization granted with CD3 approval
Optical parametric amplifier
Planning requisition in process for OPA

15. 1.2.4 XPP 2D Detector from BNL by MOU
Purpose
Detect X-ray scattering pattern
Engineering/Design/Fabrication status
Sensor, ASIC and readout electronic design complete
ASIC is fabicated
512 x 512 sensor fabricated
Detector housing preliminary design is complete
Close coordination with the XPP team
Detector program on schedule for March 2010 delivery to SLAC

16. 1.2.5 Sample Goniometer Purpose Engineering/Design/Fabrication Status
Sample orientation
Engineering/Design/Fabrication Status
Received advanced procurement authorization Dec. 18, 2008
Goniometer PO awarded to Huber April 1, 2009
Expected to be delivered in April 1, 2010
Vendor site visit scheduled for July 17, 2009

17. Detector Mover (1.2.5) Purpose Engineering/Design/Fabrication Status
Position XPP detector
Engineering/Design/Fabrication Status
Motion tests of a industrial 6-axis robot performed August 12-13, 2008
Received advanced procurement authorization Dec. 18, 2008
Robot basing design study completed in January, 2009
Robot PO awarded March 31, 2009
Robot delivered June 25, 2009
Robot support design review held May 22, 2009
Detailed fabrication drawings completed
Requisition in process
Robot software PO awarded July 2

18. Hutch Facilities (1.2.6) Purpose Status
Tool and equipment storage, cable management, etc…
Status
Work benches and storage cabinets received and installed
Tools and tool boxes received and installed
Raised floor PO awarded June 24, 2009
Installation in August
Cable trays are here

19. XPP Critical Path

20. Progress Since April Status Review
Design Reviews
Robot support design review completed May 22
Fabrication
X-ray support tables and associated hardware fabricated or in process
XPP detector positioner
Laser tables
Laser containment system
Workbenches and tool storage
20 GHz oscilloscope
Various laser optics and optomechanics
Procurement
Raised floor system contract awarded
Planning requisitions for optical parametric amplifier and pump lasers
Key project Milestones
Preliminary Instrument Design Review Dec 2007
CD July 2008
Advanced Procurement Review Nov 2008
Final Instrument Design Review Feb 2009
Early Science Procurement Authorization Mar 2009
Ready for Early Science July 2010
Ready for CD May 2011
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21. Cost & Schedule Performance

22. Summary
Instrument accommodates a wide variety of cutting edge research capabilities and fulfills the CD-0 mission
XPP design is very mature
Risks are identified and monitored in the risk registry
Major risks associated with the sample goniometer but are being actively mitigated
Final Instrument Design Review completed February 2009
XPP received fabrication authorization March 2009
> 50% of procurements complete
ARRA funding advanced completion of:
X-ray focusing lenses
Harmonic rejection mirror system
Multipass amplifier
Optical Parametric Amplifier
First call for proposals Fall 2009
User operation start planned for Fall 2010
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