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X-ray Photon Correlation Spectroscopy & Microbeam SAXS at NSLS-II

January 10-11, 2008

The purpose of this workshop is to develop the scientific and technical case for a beam line at NSLS-II designed to supply a brilliant source of coherent hard x-rays for x-ray photon correlation spectroscopy (XPCS) experiments and for small angle x-ray scattering (SAXS) experiments that can take advantage of a micrometer-sized beam with precise spatial positioning. It is anticipated that a Beamline Advisory Team (BAT) will form as a result of some of the discussions at this workshop and that this BAT will submit a Letter of Interest to work with NSLS-II on the design, construction and commissioning of this beamline.

Syllabus

Recent advances in the production of synchrotron radiation have fostered the development of methods utilizing coherent x-rays for x-ray photon correlation spectroscopy (XPCS) studies of materials. The analog of dynamic light scattering with x-rays, XPCS is uniquely suited for investigating the dynamics in materials on small (nanometer-scale) lengths. Expected to deliver nearly two orders of magnitude higher coherent x-ray flux in the hard x-ray range compared with existing synchrotron sources, NSLS-II promises to enable major advances in XPCS, particularly with regard to expanding significantly the dynamic range of the technique to shorter times. This workshop will explore the current state-of-the-art in XPCS and the new scientific opportunities that NSLS-II can make possible with the technique, as well as more generally with small angle x-ray scattering (SAXS) that can take advantage of a micrometer-sized beam with precise spatial positioning that a beam line designed for XPCS would provide. Instrumentation needed for pursuing these opportunities will also be discussed.

Agenda
 

January 10    
8:55 Welcome Bob Leheny
9:00 NSLS-II Overview John Hill
9:20 Prospects for XPCS/microbeam SAXS at NSLS-II Bob Leheny
9:35 XPCS Studies of Soft Glassy Materials: Accomplishments and Future Directions Jim Harden
10:50 Critical dynamics of capillary waves in an ionic liquid Eli Sloutskin
11:30 X-ray Photon Correlation Spectroscopy from Liquid Surfaces Larry Lurio
     
1:20 Domain Wall Dynamics in Antiferromagnetic Chromium Oleg Shpyrko
2:00 Investigating RNA folding using microfluidics and SAXS Lois Pollack
3:10 The Impact of Collective Molecular Dynamics on Physiological and Biological Functionalities of Artificial and Biological Membranes Maikel Rheinstdter
3:50 Dynamic Light Scattering Techniques for Intermittent and Evolving Systems Doug Durian
4:30 Discussion of Scientific Opportunities and Priorities for XPCS and microbeam SAXS at NSLS-II Aymeric Robert
 
January 11    
8:30 Microfluidics in XPCS at the ESRF Andrei Fluerasu
9:10 XPCS at the APS: Implementation and Operations Alec Sandy
9:50 Detector R&D for NSLS-II Peter Siddons
11:00 Design Status of Coherent Hard X-ray Beamline Lonny Berman
11:40 Discussion of Design and Instrumentation Priorities for XPCS and microbeam SAXS at NSLS-II Anders Madsen

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