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SSRL: A Vision for the Future

This presentation discusses the present status of SSRL, its management vision and goals, and future scientific opportunities and facilities. It highlights the performance of SPEAR3 and the upgrades planned for the facility. The director's statement emphasizes the importance of world-class science, employee and user safety, and value to stakeholders. The presentation also explores SSRL's future role within SLAC and the potential for new scientific opportunities and funding.

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SSRL: A Vision for the Future

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  1. SSRL: A Vision for the Future Joachim Stöhr, SSRL Director • Present status • Management vision and goals • Future scientific opportunities and facilities SSRL 32nd Annual Users' Meeting October 17, 2005

  2. Present Status

  3. SPEAR3: A State-of-the-art 3rd Generation X-ray Source 3 GeV, SPEAR3 20 10 1.9 GeV 7GeV ALS APS 16 10 12 10 Spectral Brightness 10 100 0.01 0.1 1 Photon Energy (keV) New sources are in 2.5 – 3.5 GeV range: Shanghai LS: 3.5 Diamond (UK): 3.0 Australian LS: 3.0 Canadian LS: 2.9 Soleil (France): 2.5 Swiss LS: 2.5

  4. Jan-05 Feb-05 Mar-05 Apr-05 May-05 Jun-05 Jul-05 SPEAR3 Performance

  5. FY 2005 Experimental Run Summary • Feb. 4 – Aug. 1, 2005 run delivered 95% of scheduled user shifts. • 760 experimental starts on 19 beam line stations. • 900 users were badged to perform experiments. • User demand was 150% of available resources. • 89% US users: Univ. (53%), Nat. Labs (29%), Industry (7%). • 11% foreign users: Univ. (8%) , Labs. (3%).

  6. FY 2006 Experimental Run Dates: November 28, 2005 to August 7, 2006 holiday shutdown Dec. 23 (4 pm) – January 3 (8 am) but run extension August 1 – 7 provides 3 more days and availability of 7 more BLs

  7. SSRL Facility Upgrades Bl 4-2: SAXS camera & software BL 6: K-B and TXRF system BLs 7-1, 7-2, 7-3 are being totally rebuilt and will come up in February

  8. SPEAR3 - Present Status and BL Upgrades • State-of-the-art 3rd generation storage ring • Most beam lines operational • Extremely reliable operation at 100 mA • Ring test of 500 mA operation successful – beam in BL 6 • Upgrade of insertion device lines • toward 500 mA operation to be completed by end 2006 • Upgrade of bending magnet beam lines by 2007 • …but even with completion of upgrade program • Full science potential of SPEAR3 will not have been realized talks tomorrow by Bob Hettel & Tom Rabedeau

  9. Vision and goals

  10. Director’s Statement I want SSRL to be known for : • Its world-class science • Its caring for employees and users safety • Its value to DOE and other stakeholders (e.g. NIH) • Its importance within SLAC and Stanford

  11. The New SSRL Directorate

  12. SSRL’s Future Role within SLAC One of three pillars of photon science program at SLAC Ultrafast Center X-Ray Lab. of Advanced Mat. ……. LCLS SSRL Centers of Excellence SSRL program can maintain vitality for more than 10 years Science programs complementary to LCLS Important part of research in Centers is linked to SSRL Significant additional scientific opportunities exist Challenge is: Full utilization of SPEAR3 capabilities Identification of new opportunities Funding of new facilities

  13. SSRL administrative plans: • Create “Scientific Advisory Committee” (SAC) • in addition to • “Proposal Review Panel” (PRP) • SAC formation nearly complete • Review recruiting and retention (career) issues of staff scientists. • Task force to make recommendations • Charge drafted

  14. SPEAR3 - Opportunities and New Facilities • Opportunities identified over last 3 years by: • SSRL scientific staff, users and faculty • Plan supported by outside committee and by SSRL PRP • chaired by S. Sinha (UCSD) and R. Chianelli (UTEP, also PRP Chair) • List expanded by discussions within directorate / faculty First implementation stage has 3 year horizon (next DOE review in 2008)

  15. SPEAR3 - New Facilities • Funded and in process: • Structural Molecular Biology BL 12 (Caltech funded) • Soft X-Ray Facility BL 13 (DOE funded) • Hard X-Ray Microscope - TXM (NIH funded) • Proposals to DOE-BES 2005: • High Resolution Photoemission BL (under review) • Small Angle X-Ray Scattering BL (end of year) • Nanoscale Dynamics Research (end of year) • In planning: • Superconducting in-vacuum undulator source (Stanford (donor) / DOE) • - inelastic x-ray scattering station • - hard x-ray microscopy (STXM) station • Other - capture new opportunities: • e.g. high-throughput SMB bend beam lines

  16. BL12 ID BL13 SPEAR3 – Beam Lines and Expansion Capacity • Existing Beam Lines • 7 IDs – in blue color • 4 bends – in red color • 27experimental stations, 23 operate simultaneously • Easy-access new source points (ID andB) • 2 – 1.5 m ID - small gap ( one used for BL12) • 2 - 3.8 m ID ( one used for BL 13 ) • 2 - 2.3 m ID • 3 - bends BLs under construction: BL12: Macromolecular crystallography BL in-vacuum undulator. Moore gift to Caltech ($12.4M to SSRL) - Q1/07 BL13: Soft x-ray nanoscience BL variable polarization undulator – microscopy , coherent scattering, spectroscopy funded by DOE-BES - move from BL5 in ‘07 • Possible number of stations • 19 IDs • 17 bends

  17. Funded beam lines – in process

  18. Protein Crystallography BL12 • Funded through Moore Foundation gift to Caltech • In-vacuum small gap undulator - on order • KB focusing optics, beam size - 20 µm x 200 µm • Microdiffractometer for micro-crystal studies • Installation of ID and beam line in 2006 shutdown • PRT beam line with 60% general user time

  19. Soft X-ray BL 13 with 3 Endstations Nanoscience, environmental science, chemistry and biology SPECKLE Funded DOE Proposal Coherent, Resonant X-ray Scattering To be moved from BL 5-2 - fall 2007 SPECKLE Adv. Spectrosc. Spectroscopy EPU SGM STXM STXM

  20. slit Si(Li) BL 6-2 CCD y MZP x reflective Condenser Hard X-Ray Microscopy Facility on BL 6-2 spatial resolution: 20 nm Energy: 3 keV – 14 keV 2D and 3D Imaging Fluorescence microprobe integral Various contrast modes: absorption contrast, Zernike phase contrast

  21. Beam line proposals 2005

  22. New ARPES Branch on Beam Line 5 New EPU source High resol. plane grating mono < 150 eV ARPES endstation

  23. New SAXS-WAXS Bending Magnet Beam Line WAXS detector slits: h & v bend magnet between beamlines 4 and 5 mono: multilayers & Si(111) focusing mirror (h & v) SAXS detector in 5m flight path • Sample environments: • furnace to ≈800 oC • multi-sample holder (≈12) up to 200 oC • stopped-flow cell • chamber for windowless SAXS • space for optics instrumentation • heated shear cell • grazing incidence-SAXS chamber • Focused f~1x1012hn/s • E = 5.9 - 20 keV • 0.1 x 0.1 mm2 focus on detector • SAXS: Q ≈0.001 – 0.5 Å-1 • WAXS: Q ≈0.5 – 6 Å-1 Proposal to DOE – late 2005 : Cost ~ $ 3.0 million

  24. x Nano-scale Dynamics – Combining Focusing with Time-resolution Goal: Direct observation of dynamics/fluctuations on nanoscale • Conventional x-ray techniques: ensemble averages in space and time. intrinsic dynamics averages out • Coherent x-rays (speckle): can measure fluctuations limited coherent flux • Alternative method: • focus to spot size ~ correlation length • employ time-resolved detectors • Science: dynamics and fluctuations in disordered systems, liquid crystals, supercooled liquids, phase transitions: glass transition, magnetic phase transitions….. excited state dynamics laser pump – x-ray probe nanocrystals, surfaces ... • Time-scales from 100 picoseconds to seconds. pump with high rep-rate laser using full synchrotron rep-rate. Science proposal to DOE – late 2005

  25. In planning – 2 BLs on superconducting in-vacuum undulator – depends on donor fund drive

  26. In-Vaccum Superconducting Undulator Propose to use for 2 stations: Inelastic scattering and hard x-ray STXM microscope both 1.5 m length

  27. Inelastic X-ray Scattering Facility elastic peak ΔE = E0- E’ e- graphite Compton peak Intensity [log scale] sample Raman scattering photon q photon E0 ΔE ~ 200 - 1000 eV E’ E0[eV] Science: Bulk characterization of low Z materials ambient conditions - systems with high vapor pressure, aqueous systems - carbonaceous systems (asphaltenes, coals) - Li-C batteries extreme conditions - different phases of H2O - methane hydrates, N2, O2, CO, CO2, NO - hydrogen storage in nanotubes - superconductitivy (Li, oxygen)

  28. Summary • SSRL will remain a central and important part of “Photon Science” at SLAC • SPEAR3 offers exciting new scientific opportunities • Their capture requires new state-of-the-art instrumentation / BLs • Proposed facilities are matched to the external and in-house users • Their funding and implementation will cover the timeframe > 2010 • Future Challenges: • Improved operation of SPEAR3 • – beam time, beam quality, safety • Funding to capture the identified opportunities • – beam lines, instrumentation, staff

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