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SXR Instrument Status

SXR Instrument Status. Michael Rowen –Engineering Physicist May 14, 2009. Outline. SXR Consortium SXR Instrument Configuration End Stations Funding-Spending Schedule Conclusions. SXR Consortium.

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SXR Instrument Status

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  1. SXR Instrument Status Michael Rowen –Engineering Physicist May 14, 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.

  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 • There will be a mirror for coaxial introduction of a pump or alignment laser. 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: (more below) • $1800k committed • $1200k at SLAC • $300k due in May • $300k due in July • LCLS: • $1500k committed at SLAC

  12. Hamburg/DESY Funding • The Hamburg/CFEL funding was really late. • Hamburg/CFEL/DESY did not sign MoU until 2/5/09. • SLAC did not sign it until 2/24/09. • The first installment, $1200k of funds from U. Hamburg arrived 3/24/09, but a contract modification has to go through for authority to spend it. • Did not get approval from the DOE to spend these funds until 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. • This impediment has been passed.

  14. Critical Procurements • Mono Optics: • Grating substrates delivered, QC’ed and at ruling vender • Due end September • M1 Mirror due early June • Coating at LLNL projected 4 weeks from availability gratings • Monochromator System: • Due November 15th • Exit Slit: • Out to bid • Projected delivery mid December • K-B Mirrors: • Out to bid • Projected delivery end October • Coating at LLNL projected 4 weeks from availability mirrors • 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 tight schedule • Only 3-4 weeks float to final installations during the January-February down. • The critical path item is the monochromator. • The next most critical item are the K-B mirrors. • There are no show stoppers at this time. • SXR should be ready for beam by the end of February 2010.

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