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SXR Instrument

SXR Instrument. Michael Rowen – Engineering Physicist June 9, 2009. Outline. SXR Consortium SXR Instrument Configuration End Stations Funding-Spending Schedule Conclusions. SXR Consortium.

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SXR Instrument

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  1. SXR Instrument Michael Rowen – Engineering Physicist June 9, 2009

  2. Outline • SXR Consortium • SXR Instrument Configuration • End Stations • Funding-Spending • Schedule • Conclusions

  3. SXR Consortium • The SXR instrument is being built by a consortium formed between Stanford University, the University of Hamburg, CFEL (at DESY), LBNL, and the LCLS. • The instrument is a soft x-ray beam line capable of monochromatic, “white” beam and spectrometer mode operations. • SXR will be operated as a general user instrument. • Consortium members get a slight preference during early operation only. All experiments will be handled through the LCLS proposal process. • The end stations are to be supplied by users. • User may collaborate with any of groups with listed endstations (http://lcls.slac.stanford.edu/sxr/SXRTechEndStations.aspx)or propose their own systems.

  4. SXR Instrument For overview see http://lcls.slac.stanford.edu/sxr/SXRTechOverview.aspx K-B Focusing Optics Photon Stopper Beam Dump Exit slit & Spectrometer Detector End Stations (user supplied) Transmission sample Chamber M1 Mirror & Grating System Single pulse shutter

  5. Transmission Sample System: • Simple chamber just before mono. • Sample introduction and manipulator from top. • Coaxial pump laser in-coupling. • Two mirrors for 800 & 400nm The SXR Instrument will have the capability to do transmission experiments utilizing the monochromator as a spectrometer.

  6. Monochromator • Upright image-fixed exit slit. • Operate in monochromatic (& spectrometer mode) & • “White” beam mode • Commercial mechanical system Varied Line Space (VLS) Plane Grating Monochromator:

  7. Exit Slit Spectrometer Detector • Exit slit commercial: • Detector Design based on XTOD Imaging Detector: • 10 μm resolution required • 2.5x2.5mm area imaged • Use 1024x1024 camera for 120Hz data collection • Use XTOD Imaging Detector lens system

  8. Refocusing Optics SXR to clone AMO K-B system: • SXR End Station spot spec’ed at <10x10mm. • AMO K-B system has tighter specs. • Cost savings by copying AMO system. • Small modification mirrors to accommodate the different focal lengths.

  9. Differential Pump & Coaxial Pump Laser • Between the focusing optics and the end station there will be a differential pump to allow operation of end stations at up to 1x10-6 torr • Differential pump sections double as collimators for beam containment. • There will be a mirror for coaxial introduction of a pump or alignment laser. • Two mirrors for 800 & 400nm End Stations Differential Pumping Laser in-coupling mirror

  10. End Stations End Stations proposed to date: (http://lcls.slac.stanford.edu/sxr/SXRTechEndStations.aspx) • CFEL-ASG Multi-Purpose (CAMP), atoms to nano-particles: Max-Planck ASG at CFEL • Surface Chemistry PES/XES/XAS: Stanford • Electron Beam Ion Trap (EBIT): MPI Heidelberg & LLNL • Momentum Resolved X-ray Scattering: Stanford & LBNL • Resonant Imaging: Stanford • Liquid Jet - Chemical Dynamics: CFEL, MAX-lab & MPI Gottingen

  11. SXR Funding • Stanford: • $750k committed • $500k at SLAC • Remainder available as needed • LBNL: • $377k in kind design and engineering support • Hamburg/DESY: • $1800k committed • $1200k at SLAC • $300k due in May • $300k due in July • LCLS: • $1500k committed and at SLAC

  12. Hamburg/DESY/SLAC MoU & Funding • MoU signed off by all parties 2/24/09. • Approval to spend funds from Hamburg & CFEL 4/29/09. • Processing the long lead requisitions as quickly as possible.

  13. Costs-Spending • All major SXR procurements have been at or below the budgeted amount. • The engineering effort has been on track with the available funding. • So far we have been limited by slow arrival funding and then spending approval. • Timely procurement of critical items is critical to the schedule.

  14. Critical Procurements • Mono Optics: • Grating substrates delivered, QC’ed and at ruling vender • Ruled gratings due end September • M1 Mirror due late June • Coating at LLNL projected 4 weeks from availability gratings • Monochromator System: • Awaiting placement of order • Projected delivery late November • Exit Slit: • Order in process • Projected delivery mid December • K-B Mirrors: • Order in process • Projected delivery late November • Coating at LLNL projected 4 weeks from availability mirrors • Assembly at LBNL • K-B Mirror System: • To be built at LBNL (same group as doing the AMO K-B system)

  15. Summary SXR Schedule

  16. Conclusions • The SXR instrument is on a very tight schedule • Only <2 week float to final installations during the January-February down. • The critical item is the monochromator as it is in the 1st hutch. • The critical path item are the K-B mirrors in the 2nd Hutch. • The funding hurdles are past. • There are no show stoppers at this time. • SXR should be ready for beam by the end of February 2010.

  17. End Presentation

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