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X-ray Correlation Spectroscopy Instrument
Aymeric Robert XCS Instrument Scientist April 21, 2009
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X-ray Photon Correlation Spectroscopy
Coherent Scattering (Speckles) Coherent X-rays Speckles : scattering patterns produced by the coherent illumination of the sample XPCS : observation of the time-fluctuation of speckle patterns Characterization of the underlying dynamics of the system XPCS is independent of the scattering geometry (SAXS, Diff., GI-SAXS, Refl.,…) XPCS probes dynamical phenomena First Hard X-ray Speckles
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XCS Instrument Location
Near Experimental Hall X-ray Transport Tunnel (200m long) XCS Source to Sample distance : ~ 420 m Far Experimental Hall
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Far Experimental Hall X-ray Correlation Spectroscopy Coherent Material
Imaging Material Extreme Conditions
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XCS Instrument Overview
Requirement Device Tailor X-ray spatial profile X-ray Slits Select X-ray energy and tailor spectrum width Control longitudinal coherence length Monochromator Split X-ray pulse and control the delay Split and Delay (MoU DESY) 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 Characterize X-ray pulse intensity Intensity Monitor Characterize X-ray spatial profile Profile Monitor Characterize incident X-ray intensity before optical component of before sample Non-destructive Intensity Monitor Sample orientation and alignment Diffractometer Position X-ray area detector and minimize air absorption and air scattering Large Angle Detector Stage Measure X-ray speckle patterns 2D Detector (BNL) Photon Shutter Primary Slits Diagnostics Monochromator Secondary Slits Transport Tunnel Diagnostics Split and Delay Secondary Slits Diagnostics Focusing Lenses Photon Shutter Attenuators Pulse Picker Harm. Rej. Mirrors Defining Slits FEH Hutch 4 Diagnostics Diffractometer Large Angle Detector Stage
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Complete XCS Layout FEH Hutch 4 LUSI Intensity Monitor
LUSI Monochromators LUSI Position Monitor Split and Delay Unit LUSI Position Monitor Photon Stopper LUSI Position Monitor PPS Photon Shutter LUSI Attenuators LUSI Pulse Picker LUSI Position Monitor Diffractometer Wide Angle Detector Stage Beam Dump PPS Photon Shutter Valve LUSI Slit System LUSI Profile Monitor LUSI Slits System Photon Stopper Valve LUSI Slits System Valve LUSI Slits System Valve LUSI Slits System LUSI Slits System CXI Transport Tunnel 30m FEH Hutch 4
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XCS Instrument Overview
Hutch 4 Vestibule Hutch 4 Optics, Diffractometer Large Angle detector Mover Split and Delay Area X-ray Transport Tunnel Post-Monochromator Large Offset Monochromator
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XCS Instrument Overview
Optical raft (1.4.2) Optics and Diagnostics (1.5) Diffractometer ( ) Large Angle Detector Stage ( )
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X-ray Optics and Diagnostics
Photon Shutter Primary Slits Diagnostics Secondary Slits Split and Delay Focusing Lenses Attenuators Defining Slits Diffractometer Large Angle Detector Stage Monochromator Transport Tunnel FEH Hutch 4 Harm. Rej. Mirrors Pulse Picker Device X-ray Slits and Guard slits Attenuators Pulse Picker Intensity Monitor Profile Monitor
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X-ray Optics and Diagnostics
Photon Shutter Primary Slits Diagnostics Secondary Slits Split and Delay Focusing Lenses Attenuators Defining Slits Diffractometer Large Angle Detector Stage Monochromator Transport Tunnel FEH Hutch 4 Harm. Rej. Mirrors Pulse Picker Post-Monochromator Large Offset Monochromator Large Offset Monochromator 600mm offset 6-25keV Si(111) and Si(220) Relocation closer to #4 Adv. Proc Review : This Thursday Post-Monochromator DCM 6-25keV Si(111) then Si(511) Scope addition Feb09 APS,8ID
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4-C Hor. Scatt. Diffractometer
Photon Shutter Primary Slits Diagnostics Secondary Slits Split and Delay Focusing Lenses Attenuators Defining Slits Diffractometer Large Angle Detector Stage Monochromator Transport Tunnel FEH Hutch 4 Harm. Rej. Mirrors Pulse Picker Diffractometer System Horizontal Scattering 4-circle Diffractometer Same platform-CoR distance as XPP Diff Possibility to remove from the beam path (airpads) No interference with CXI beamline (600mm aside) Advanced Procurement Review : This Thursday
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Large Angle Detector Mover
Photon Shutter Primary Slits Diagnostics Secondary Slits Split and Delay Focusing Lenses Attenuators Defining Slits Diffractometer Large Angle Detector Stage Monochromator Transport Tunnel FEH Hutch 4 Harm. Rej. Mirrors Pulse Picker Large Angle Detector Mover Sample/detector distance 7-8m Decoupled from diffractometer SAXS, WAXS, GI 2θ up to 55º, vertical tilt Advanced Procurement Review : This Thursday
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Large Angle Detector Mover
Photon Shutter Primary Slits Diagnostics Secondary Slits Split and Delay Focusing Lenses Attenuators Defining Slits Diffractometer Large Angle Detector Stage Monochromator Transport Tunnel FEH Hutch 4 Harm. Rej. Mirrors Pulse Picker HERIX, sector 30
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XCS Detector 2D Pixel Array Detector Developed at BNL (MoU)
/=1.410-4 20m, Flat 20m, Focussed Pink : /=1.5% 12m, Focussed change optics beam size 2D Pixel Array Detector Developed at BNL (MoU) 1024 x 1024 pixels 35 x 35 mm2 pixel size High DQE 10 2 dynamic range Noise << 1 photon 120 Hz Readout Rate
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Work Breakdown Structure
WBS Scope/CD-2 Cost Includes: 1.4.1 XCS Physics support & engineering integration 1.4.2 XCS X-ray optics & support tables 1.4.3 2D XCS Detector from BNL by MoU 1.4.4 XCS Sample Environment & Diffractometer system 1.4.5 XCS Hutch facilities 1.4.6 XCS Vacuum system 1.4.7 XCS Installation Other related WBS 1.5 Diagnostics & Common Optics, incl. Monochromator 1.6 Controls and data system In kind contribution Split and Delay setup ( from SLAC/DESY MoU in process)
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(available in 2012 or before)
Scope Early Science Scope (available 2011) CD 4 (available in 2012 or before) Post-Monochromator Large Angle Detector Mover Diffractometer Large Offset Monochromator X-ray Diagnostics (All) X-ray Detector System X-ray Optics and Diagnostics Support Stands Vacuum System Controls & Data Systems Hutch Facilities
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