31st Annual SSRL Users' Meeting

October 20-22, 2004 :: Menlo Park, California

Program

• Wednesday, October 20th
• Thursday, October 21st
• Friday, October 22nd
• Sunday, October 24th
• Monday, October 25th
• Tuesday, October 26th

Wednesday, October 20th

• Modern Valence Band Photoemission Spectroscopy Workshop – A Legacy of W.E. Spicer and A Powerful Tool for Materials (a joint SSRL/ALS workshop organized by Ingolf Lindau, Piero Pianetta, Z.X. Shen, and Neville Smith) (SLAC Bldg. 48, Redwood Room A/B, 8 am-5:30 pm)
  This workshop will combine a reflection on the history modern valence band photoemission spectroscopy, and a survey of the latest development in the field with emphasis on high resolution angle-resolved photoemission studies of novel materials. The latest advancements in both theory and experiment (including the planned photoemission beamline at SSRL) will be discussed. .
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• High Throughput Screening/Macromolecular Crystallography Workshop (Aina Cohen, Mike Soltis, Ana Gonzalez) (SLAC Bldg. 40, Orange Rm, 1-5 pm)
  Participants will learn about the latest developments at SSRL including an overview of automated crystal screening, a capability that will be available at all the macromolecular crystallography beamlines. Topics will include robotic sample mounting, crystal screening software, and new options for data backup. Some time will be set aside for an open discussion. Learn how to take advantage of these new tools, hear about what is being developed, avoid common pitfalls, and let us know how to best meet your needs.
  Each new participant will be given a ‘cassette loading kit’ and will learn to use the kit contents to load pre-frozen samples into SSRL sample cassettes. Participants will also learn to successfully flash-cool samples while loading cassettes. They will find out how to best ship cassettes and learn how to upload crystal information into the blu-ice control system database. This workshop is good preparation for researchers inexperienced with the use of the SSRL automated screening system.

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• Experimental Methods of X-ray Scattering Workshop (Sean Brennan, Apurva Mehta, Mike Toney) (SLAC, Bldg. 40, Orange Conference Room, 8 am-12 pm, Bldg. 120 Experimental Floor, 1- 4:15 pm)
  This will be a hands-on practicum which will occur on BLs 7-2, 2-1 and 11-3. In addition to basic techniques of diffractometer alignment, there will be discussions of how to do specific measurements on each station such as grazing incidence scattering, specular reflectivity, powder diffraction and anomalous scattering. There will also be demonstrations of the recently acquired 900C furnace. The workshop is recommended for students of all ages who would like to be more efficient and effective in using the scattering stations at SSRL. (program)

11:45-1:15 pm   Lunch (in tent)

5-7 pm Post-Workshop and Pre-Meeting Registration Reception/Vendor Exhibits Open (Auditorium Foyer, Breezeway, and Picnic Area)

Thursday, October 21st

7:15 am REGISTRATION/VENDOR EXHIBITS (User Check-in/SSRLUO-EC Ballot Drop Off/ Poster Set Up) (assorted pastries, fresh fruit, juice, coffee)

Session 1
OPENING REMARKS AND KEYNOTE PRESENTATION

8:00 am Welcome and Introductions – Michael Toney, SSRL and Glenn Waychunas, LBNL

8:05 am SSRL Users’ Organization Highlights – Benjamin Bostick, Dartmouth College

8:10 am SLAC Users’ Organization Highlights – Gregory Dubois-Felsmann, Caltech/SLUO Representative

8:15 am Message from the SLAC Director – Jonathan Dorfan

8:30 am SSRL Director’s Report - Keith Hodgson, SLAC Associate Director for SSRL

9:00 am DOE BES Perspective - Patricia Dehmer, Associate Director of Science for Basic Energy Sciences, DOE

9:30 am View from Washington – Michael Lubell, American Physical Society/CCNY

9:45 am Lightsources.org. Enabling Global Communications in Synchrotron Radiation – Uwe Arp, NIST

10:00 am BREAK/VENDOR EXHIBITS (Poster Set Up)

10:20 am Keynote Presentation: Ultrafast X-ray Science - Philip Bucksbaum, University of Michigan

No one has ever photographed a molecule undergoing a chemical reaction. Hard x-rays (E > 1 keV) can probe matter on the length scale of a chemical bond. Ultrafast lasers (t < 1 ps) can capture the quantum dynamics of single molecular vibrations or map chemical reactions as they evolve. The new Sub-Picosecond Pulse Source (SPPS) does both. This is the first accelerator to make x-ray pulses brief enough to capture atomic motion during chemical reactions, on the Angstrom scale of chemical bonds. Its 8 keV, 80 fs x-ray pulses are the brightest ultrafast x-rays in the world, and this is just the beginning. The planned X-ray free electron laser (LCLS) at SLAC will generate focused x-ray fields as strong as atomic binding fields, comparable to today's highest intensity lasers. These new tools are creating some special opportunities for new science, and also some challenges.

Session 2
A SPECIAL SESSION IN MEMORY OF WILLIAM E. SPICER – FOCUS ON PAST AND FUTURE OF PHOTOEMISSION

In tribute to the late William E. Spicer, co-founder of SSRL and pioneer in photoemission spectroscopy, a special session has been organized to honor Bill’s foresight and accomplishments. Early on, forward-thinking scientists like Bill Spicer and Sebastian Doniach realized that the synchrotron radiation produced by SPEAR could be used to study many aspects of the structure of matter at the atomic and molecular scale - from surface properties of semiconductor materials to the structure of protein molecules. This led to an NSF grant with subsequent funding of the Stanford Synchrotron Radiation Project (SSRP), which later became SSRL. Over the years, the beams provided by SPEAR enabled breakthrough discoveries in many fields involving the use of hard and soft x-rays and laid the groundwork for what was to become a very large expansion in synchrotron use and facilities, both in the U.S. and abroad.

 

10:55 am Introduction of Session and Speakers, Piero Pianetta, SSRL (Session Chair)

11:00 am Bill Spicer in the Fifties and Sixties, Gerald Lapeyre, Montana State University

11:30 am Future of Photoemission Spectroscopy, Z.-X. Shen, Stanford University

12:00 pm LUNCH/VENDOR EXHIBITS

Session 3
POSTER SESSION

1:00 pm User Research Poster Session (in tent)

Session 4
CHANGING TIMES AT SSRL - INCORPORATING NEW TECHNOLOGY

2:10 pm Introduction of Topic and Speakers - Benjamin Bostick, Dartmouth College (Session Chair)

2:15 pm Hard X-ray Microscopy at SSRL - Katharina Lüning, SSRL

2:30 pm What's New on the Soft X-ray Side - Jan Lüning, SSRL

2:45 pm Imaging Chemical Dynamics with Ultrafast X-rays - Kelly Gaffney, SSRL

3:00 pm Recent Developments in SAXS - John Pople, SSRL

3:15 pm Improved Efficiency at Protein Crystallography Beamlines through Automation - Aina Cohen, SSRL

3:30 pm BREAK/VENDOR EXHIBITS

Session 5
YOUNG INVESTIGATORS SESSION

4:00 pm Introduction of Topic and Speakers - Glenn Waychunas, LBNL (Session Chair)

4:05 pm Small-Angle X-ray Scattering from Nanoparticles and Their Aggregates - Benjamin Gilbert, LBNL

4:25 pm Epitaxial Growth of YBa₂Cu₄O₈ Films from a Dense Amorphous Precursor - Gertjan Koster, Stanford University

4:45 pm Characterization of Carboxyl-Functionalized SAMs and Surface-Attached Interlocking Molecules Using NEXAFS

5:05 pm Single Crystal X-ray Absorption Spectroscopy of Metalloproteins - Mary Corbett, Stanford University

5:25 pm High Resolution X-ray Emission: Carbonic Anhydrase Solvent Protonation - Ana Mijovilovich, University of Michigan

6:00 pm RECEPTION

6:45 pm DINNER

7:30 pm DESSERT AND PRESENTATION OF AWARDS:

• Graduate Student Poster Awards
• Lytle Award
• Spicer Young Investigator Award

Friday, October 22nd

7:45 am REFRESHMENTS/VENDOR EXHIBITS

Session 6
Spectroscopy Session

8:00 am Introduction of Topic and Speakers - John Bargar, SSRL (Session Chair)

8:05 am Using X-ray Absorption Spectroscopy and X-ray Raman Scattering to Study the Structure of Water - Anders Nilsson, SSRL

8:30 am From Homogeneous Catalysts to Anti-tumor Agents: Metal and Ligand K-edge XAS of Organotitanium Complexes - Serena DeBeer George, SSRL

8:55 am Predicting the Reactive Behavior of Oxoanions in Aqueous Solutions - Satish Myneni, Princeton University

9:20 am Single Crystal X-ray Spectroscopy of the Mn₄Ca Cluster of the Photosynthetic Water-Oxidation Enzyme - VIttal Yachandra, LBNL

9:45 am Local Structure and Vibrational Properties of α-Pu, α-U, and the α-U Charge Density Wave - Erik Nelson, LLNL

10:05 am Inelastic X-ray Scattering and Advanced Spectroscopy at SPEAR3 - Uwe Bergmann, SSRL

10:20 am BREAK/VENDOR EXHIBITS

Session 7
Scattering and Diffraction Session

10:35 am Introduction of Topic and Speakers - Sean Brennan, SSRL (Session Chair)

10:40 am Residual Order in Thermally Oxidized Silicon - Anneli Munkholm, Lumileds Lighting

11:05 am Why do Bones and Teeth Fail?  New Insights through Synchrotron Radiation - John Kinney, LLNL

11:30 am Developments in Protein Polycrystallography - Bob Von Dreele, ANL

11:55 pm Metal Speciation in Solution: A Comparison of High-Energy Scattering and EXAFS Experiments - Lynda Soderholm, ANL

12:20 pm LUNCH/VENDOR EXHIBITS

Session 8
SSRL REPORTS

1:30 pm Introduction - Michael Toney, SSRL (Session Chair)

1:35 pm SSRL Beam Line Development - Tom Rabedeau, SSRL

2:00 pm SPEAR3: The First Year - Bob Hettel, SSRL

2:25 pm LCLS Project Update - John Galayda, SSRL

2:50 pm Ultrafast Diffraction Measurements at SPPS - Aaron Lindenberg, SSRL

3:15 pm BREAK

3:30 pm SSRLUO-EC Meeting
Introduce Newly Elected Members; Elect Vice Chair for next year

Sunday, October 24th

5-7pm PRE-WORKSHOP REGISTRATION RECEPTION (Auditorium Foyer, Breezeway, and Picnic Area)

Monday, October 25th

Ultrafast Science and LCLS Experiments Workshop (Jerome Hastings, Keith Hodgson, SLAC Bldg. 48, Redwood Room, discussion leaders and breakout rooms to be announced):

A Workshop in Ultrafast Science and LCLS Experiments at SSRL will be organized on October 25-26, 2004. There will also be a pre-registration reception on Sunday evening, October 24th from 5-7 pm. The tentative schedule for the workshop is a joint session on Monday morning, October 25th. On Monday afternoon and Tuesday morning, there will be breakout sessions for each of the five thrust areas of the LCLS:

1) Atomic, molecular and optical physics

2) High energy density states of matter

3) Optical pump-x-ray probe studies in chemistry, biology and materials science

4) Diffraction imaging of single objects approaching atomic scale resolution

5) Coherent x-ray scattering for the study of dynamics (X-ray photon correlation spectroscopy).

The workshop will end with a joint session on Tuesday afternoon, October 26th. The workshop and breakout sessions will focus on the scientific goals and technical needs as well as experimental specifications. This workshop is open to all users (and potential future users interested in learning more about how to participate in LCLS and utilize this new technology).   (program)