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X-ray Correlation Spectroscopy (WBS 1.4) Aymeric Robert

X-ray Correlation Spectroscopy (WBS 1.4) Aymeric Robert. System Specifications Scope Requirements System Description Offset monochromator Focusing optics Slits system 2D detector Diffractometer Split and Delay WBS Detailed cost estimates Schedule and Costs Summary. Science Team.

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X-ray Correlation Spectroscopy (WBS 1.4) Aymeric Robert

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  1. X-ray Correlation Spectroscopy(WBS 1.4)Aymeric Robert • System Specifications • Scope • Requirements • System Description • Offset monochromator • Focusing optics • Slits system • 2D detector • Diffractometer • Split and Delay • WBS • Detailed cost estimates • Schedule and Costs • Summary

  2. Science Team • Specifications and instrument concepts developed and refined with the science team. The XCS team leaders • Brian Stephenson, Argonne Natl. Lab. (leader) • Gerhard Grübel, DESY, Germany • Karl Ludwig, Boston University

  3. Inelastic X-ray and Neutron Scattering Visible Raman Scattering Visible Brillouin Scattering Visible Photon Correlation Spectroscopy X-ray Photon Correlation Spectroscopy 3rd Generation Sources X-ray Correlation Spectroscopy • Fully spatially coherent • Short pulse duration • High brightness XCS @ LCLS • Dynamics of glassy materials • Phonon spectroscopy • Surface dynamics …

  4. D t Intensity autocorrelation function D t D t D t D t 4 D t 3 2 1 1 2 3 4 Sequential XCS • Time-average Brilliance • 10 ms < tC < hrs • Large Q’s accessible

  5. Ultrafast XCS • Peak Brilliance & Pulse Duration • pulse duration < tC< several ns • Large Q’s accessible

  6. XCS SCOPE - WBS 1.4

  7. System Specifications Photon Shutter Primary Slits Diagnostics Monochromator Secondary Slits Diagnostic Transport Tunnel Split and Delay Focusing Lenses Attenuators Photon Shutter Local Optics Diagnostics Slits Diagnostics CXI Station FEH Hutch 4 Diffractometer Wide Angle Detector Stage Small Angle Detector Stage

  8. XCS Endstation X-ray Transport Tunnel (200 m) (WBS 1.4.5) XCS Offset Monochromator† (WBS 1.4.2) XCS Instrument Location Far Experimental Hall CXI XPP AMO (LCLS) †Upstream location to offer sufficient separation for HED instrument when using mirror for beam sharing Near Experimental Hall

  9. SAXS Detector Stage Monochromator and Split & Delay upstream WAXS Detector Stage Diffractometer

  10. XCS System Description 1.4.1 Physics support and engineering integration 1.4.2 X-ray optics 1.4.3 Detector 1.4.4 Laboratory facilities 1.4.5 Vacuum system 1.4.6 Sample environment 1.4.7 Installation

  11. Transport Tunnel XCS Beam LCLS Beam 1.4.2 X-ray Optics • 1.4.2.1 Double Crystal Offset monochromator • Increase longitudinal coherence length (narrow X-ray spectrum) • Multiplexes LCLS beam

  12. 1.4.2 X-ray Optics • 1.4.2.1 Double Crystal Offset monochromator • for 2 µm Si (111) @ 1.5 Å • 85% transmission ,2.5% - Mono beam, 1.3% - Diagnostics beam

  13. 1.4.2 X-ray Optics Lens Mono • 1.4.2.2 – Beryllium lens focusing optic • Variable focus size down to 10 mm at 8.3 keV • Variable focus size down to 10 mm at 24.9 keV • Positioning resolution and repeatability to 1 µm

  14. 1.4.2 X-rayOptics B. Lengeler et al., J. Synchrotron Rad., 6, 1153-1167 (1999). • 1.4.2.3 Slit systems • Variable horizontal and vertical gap from 5 μm – 5 mm • Can withstand full LCLS flux – unfocused • Minimize background scatter from blades

  15. 1.4.2 X-ray Optics • 1.4.2.4 - Attenuators • Variable, up to 10 6 reduction • High damage threshold (Be or B4C)

  16. 1.4.2 Level 4 Direct Costs

  17. 1.4.3 2D Detector • Pixel array detector • 1024 x 1024 pixels • 35 mm x 35 mm micron pixel size • High Detector Quantum Efficiency (DQE) • 10 2 dynamic range • Noise << 1 photon • 120 Hz Readout Rate

  18. 1.4.3 Level 4 Direct Costs • Provided by BNL MoU

  19. 1.4.4 Laboratory Facilities & 1.4.5 Vacuum System • 1.4.4 Laboratory facilities • 1.4.5 Vacuum system • Hardware-flanges, pumps, bellows,… • supports • 200 meter long

  20. 1.4.6 Sample Environment (Diffractometer) • 1.4.6 Sample environment • X-ray diffractometer Detector motion in horizontal scattering plane SAXS detector stage (distance from 10 to 20 m) WAXS detector stage ( distance 3.5 and 7 m , 2θup to 60º)

  21. 1.4.6 Sample Environment (Diffractometer) 7-8m 20m 10m 2θ-arm

  22. 1.4.6 Level 4 Direct Costs

  23. Split and Delay • Provided by DESY/SLAC MoU • Prototype existing • 1st Commissioning May 2007 • pulse duration < delay < 3 ns • based on Si(511) with 2θ= 90º • E=8.389 keV

  24. 1.4 WBS

  25. Risks

  26. XCS Milestones CD-1 Aug 01, 07 Conceptual Design Complete Jul 14, 09 CD-2b Oct 01, 09 CD-3b Mar 31, 10 Early installation - Beam Delivery Sep 14, 10 Receive Offset monochromator Jul 14, 11 Receive Sample Environment Aug 14, 11 Install BNL XCS Detector Sep 30, 11 Installation Complete Nov 14, 11 CD-4b Mar 30, 12

  27. XCS Cost Estimate

  28. WBS 1.4 - XCS Cost estimate at level 3 by fiscal year –

  29. 1.4 Level 3 Costs (in M$)

  30. Summary Instrument concept is advanced Instrument concepts is based on proven developments made at SR sources Initial specification well developed Ready to proceed with baseline cost and schedule development

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