Workshop on Neutron Spin Echo Spectrometry
An international workshop is being organized by the Jülich Center of Neutron Science (JCNS)
and the Spallation Neutron Source (SNS) to discuss current status and future trends of science
driving the development of the Neutron Spin Echo (NSE) spectrometer in commissioning at the
Spallation Neutron Source. The Spallation Neutron Source offers unique capabilities both with
respect to the pulsed operation of instruments and its power. It is the first time that a spin
echo spectrometer has been build at such a source. This spectrometer offers some innovative
components like fully compensated superconducting coils and a magnetic shield reducing its
sensitivity to stray fields, as well as new developed correction elements for wider detector
coverage. This two-day event workshop will celebrate the completion of its construction phase
and will present invited and contributed talks on neutron spin echo related science challenging
scientist all over the globe.
Due to the unique properties of neutrons, investigations to reveal structure and dynamics of
polymers, colloids, polymer interfaces, composite polymer materials, bio-compatible and bio-mimetic
structures, polymer glasses and polymer nanostructures have delivered significant insight into soft
matter physics and soft matter molecular structure. Subsequently, this workshop is mainly focused on
soft matter but should offer a discussion basis for new developments in this field, too. The workshop
will have the following sessions:
- NSE in general and the SNS-NSE
- Biophysics
- Complex Fluids
- Polymer dynamics
- New Trends and directions
As scientific applications for the Neutron Spin Echo Spectrometer are mainly expected come from
soft matter research, for which the instrument is designed for users will be attracted from all
fields of modern condensed matter and material science, too. One major role of this instrument is
to be a unique facility to analyze slow dynamical processes and thereby to unravel molecular motions
and dynamics at the nano- and mesoscale level. This feature is of utmost relevance for
“soft matter” problems which occur in research fields as molecular rheology of
polymer melts, related phenomena in networks and rubbers, interface fluctuations in complex fluids,
polyelectrolytes, transport in polymeric electrolytes and gel systems. In biophysics, the molecular
dynamics of proteins, phospholipid membranes and other biomolecules is gaining in importance. The
still improving capabilities of molecular dynamics calculations which meanwhile extend into the
multi nanosecond time domain allow for a detailed comparison with neutron scattering results. For
detailed information on this instrument, visit http://neutrons.ornl.gov/instrument_systems/nse.shtml
The following invited speakers have already accepted:
- Arantxa Arbe, University Basque Country
- Ralf Biehl, Jülich Center for Neutron Science
- Dobrin Bossev, Indiana University
- Sow-Hsin Chen, Massachusetts Institute of Technology
- Toshi Kanaya, Kyoto University
- Michael Kilbey, Oak Ridge National Laboratory
- Eugene Mamontov, Oak Ridge National Laboratory
- Ferenc Mezei, Los Alamos National Laboratory
- Simon Mochrie, Yale University
- Michael Monkenbusch, Jülich Center for Neutron Science
- Maikel Rheinstadter, McMaster
- Dieter Richter, Jülich Center for Neutron Science
- Jeremy Smith, Oak Ridge National Laboratory
- Alexei Sokolov, Oak Ridge National Laboratory and University of Tennessee
- Norman Wagner, University of Delaware
Jülich Centre for Neutron Science has designed and constructed this time of flight spin-echo
spectrometer. Applications for beam time are welcome and can be submitted twice each year; see
http://neutrons.ornl.gov/users/pdf/08-G00986C_Call_for_proposals.pdf
for details.
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![](images/IMG_6461.jpg) The Neutron Spin Echo team receives the key to begin instrument commissioning.
![](images/Bild 005a.JPG) Construction of the time-of-flight NSE spectrometer was completed. Commissioning is underway and it will be receiving users in 2010.
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