NSLS-II User Workshop Science-Based Discussion Groups
July 18, 2007
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Sessions A, B, C, D, E |
Sessions F, G, H, I, J
Session I: Life Sciences
Chairs: L. M. Miller, R. Sweet
Many life sciences employ light-based probes in the laboratory, and these
usually benefit from synchrotron radiation. The aim of this session will be
to survey briefly the rich offering of experimental techniques, and then to
discuss how best to move forward with plans for appropriate facilities at
NSLS-II. Several questions loom: Can one form consortia to create
multi-purpose experimental stations? How does one find funding for
construction and operation of these stations? How can all of these life
sciences be arranged on the floor of the NSLS-II to optimize synergy among
file of all presentations listed at right.
Session II: Catalysis
Chair: A. Frenkel
The catalysis session will begin with an invited talk by Ralph Nuzzo who
will briefly survey the current status of the field identifying a number of
key challenges that synchrotron-based techniques at NSLS-II might address.
The discussion session following will focus on brainstorming the following
- Discussion of the future directions of catalysis science at the
- Which advanced capabilities are needed for for the cutting-edge
research in catalysis science?
- Do we need to continue with "conventional" experiments (ex situ,
static XRD, XAFS, XPS, etc.), and if yes - what upgrades will be needed?
- Identifying challenges: technical (e.g., sample position/beam
stability at the nanoscale), logistical (beamline moving procedures,
community structure - will SCC oversee the transition?), financial
(support for end station upgrades).
- Collaboration: for example, establishing ties with CFN and have
access to complementary techniques (e.g., environmental TEM).
Session III: Environmental Science
Chair: A. Lanzirotti
This workshop will provide an opportunity for the earth and environmental
sciences community to provide initial feedback and input on how NSLS-II will
specifically benefit molecular environmental and earth science research and
how our community can work with NSLS-II to ensure future support. Tony
Lanzirotti will open the session with a review of Molecular Environmental
Sciences (MES) user statistics at the NSLS. Representatives of MES programs
at U. Chicago, Stony Brook, BNL, Princeton, and U. Delaware will then
present brief overviews of current research at the NSLS and future research
directions relevant to NSLS-II. Other interested groups are also encouraged
to present. Open discussion topics will include:
- What are the requirements of the community for continued high
quality MES research at NSLS-II?
- What new research will be made possible by NSLS-II?
- Of the techniques potentially available at NSLS-II, which are the
- What is the preferred mode(s) of access for the community?
- How should planning/design/proposal writing/operations teams be
- What existing equipment is likely to be transferable?
Session IV: High Pressure Earth Sciences
Chair: D. Weidner
Most of the materials of the Earth are at elevated pressures and
temperatures. To understand the state and evolution of the Earth, we study
the properties of minerals at these conditions. Synchrotrons have become a
central tool in this quest, providing visions that were not previously
possible. The continued evolution of the synchrotron beam enables new and
exciting probes. This breakout session will investigate the science that
will be opened with NSLS-II and the community beamline needs. Speakers, Dave
Mao, Quentin Williams, and Don Weidner will lead the discussion.
Session V: Strongly Correlated Electrons
Chair: P. Johnson
Strongly Correlated Electron Systems with their many different degrees of
freedom exhibit a range of exotic phenomena. The latter include high Tc
superconductivity in the cuprates, colossal magneto-resistance in the
manganites and giant thermoelectric effects in the cobaltates. These
phenomena offer some of the biggest challenges that currently exist for
condensed matter science research. Synchrotron Radiation provides the basis
for a number of techniques that have been applied to the study of these
materials. This workshop will focus on identifying some of the outstanding
problems in this research area and also examine some of the paths forward to
possibly solving some of these problems.
Session VI: Magnetism
Chair: D. Arena
Synchrotron radiation has become an indispensable part of detailed
characterization of advanced materials, including ferromagnets and other
materials with complex spin ordering, and devices such as magnetic tunnel
junctions. This breakout session will be an opportunity for the magnetism
community to discuss issues pertaining to beam lines, end stations, and
other experimental infrastructure. Topics that to be covered may include:
- Techniques (e.g. XRD, XMCD, EXAFS, XRMS, IR spectroscopy, nanoscale
imaging, time-resolved studies, etc.)
- Sample environments (temperature, magnetic field, rf & laser
excitation sources, etc.)
- Energy range (far infra-red to VUV / soft x-rays to hard x-rays)
- Circular and linear polarization switching and capabilities for fast
- Ancillary equipment (e.g. MOKE, VSM/SQUID magnetometry, PPMS, AFM,
- User access (general & contributing user models; capabilities for
Emphasis will be placed on discussion of potential advancements in
materials and devices and the enhancements to current state-of-the-art
capabilities and/or the development of advanced techniques required by the
community to support continued progress.
Invited Speakers: J. Sun (IBM Research Division), M. Aronson (BNL)
Session VII: Radiometry and Metrology
Chairs: J. Keister, P. Takacs
Absolute radiometry and efficiency characterization of x-ray and VUV
optics is critical for synchrotron instrumentation, high-temperature plasma
physics, astronomy, EUV lithography, and medical imaging. Both lab-based and
at-wavelength metrology methods are required in order to enable the ultimate
performance of x-ray optics at NSLS-II beamlines and elsewhere. This
breakout session will seek to discuss the full metrology and radiometry
needs of the NSLS-II community. Beamline characteristics that are expected
to be important include a wide energy range (5 eV to 50 keV), high harmonic
purity, high (and variable) flux, and high beam uniformity. These needs are
expected to be met by a minimum of two beamlines utilizing a range of
NSLS-II sources at different photon energies. Such radiometry and metrology
beamlines at NSLS-II as envisioned would be a useful tool for development
and testing of optics for a wide variety of scientific applications. Invited
speakers will offer brief overviews of several of these applications, and
plenty of time will be provided for open discussion from attendees as to
additional scientific thrusts which rely on metrology and radiometry
techniques. Also included in this breakout session will be guided
discussions of beamline performance requirements and design considerations.
Session VIII: Soft Condensed Matter
Chairs; B. Ocko, R. Pindak
Soft matter encompasses a variety of different systems including
polymers, liquid crystals, liquids, surfactants, microemulsions and
biomolecular materials. These systems are characterized by weak interactions
between their components and they exhibit varying degrees of order over a
wide range of length scales with corresponding dynamical behavior over an
equally wide range of time scales. All the major synchrotron x-ray
techniques, including scattering, spectroscopy, and imaging, are vital tools
for characterizing the structural and dynamical behavior of these complex
systems, both in the bulk and at interfaces.
After three short talks (Simon Mochrie, Dan Fischer, and Ben Hsiao),
there will be a moderated discussion on what capabilities are most crucial
for this field at NSLS-II. The discussion will also explore opportunities
for evolving these techniques and developing unique facilities. Input from
participants on the needs of the community is strongly encouraged.
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