Upgraded Beamline Operational since July 2014

Click on the image to go to the ID02 Beamline Description

The beamline ID02 is primarily a combined (ultra) small-angle and wide-angle scattering instrument. The high brilliance of an undulator source is exploited to probe the microstructure and non-equilibrium dynamics of soft matter and related systems from a few Angstroms to micron scale, and down to millisecond time range.

The scientific application of the ID02 beamline can be broadly divided into three domains; (1) soft condensed matter, (2) noncrystalline structural biology, and (3) interdisciplinary areas of soft matter, biology, and nanoscience. Soft matter studies most often involve probing the equilibrium and the nonequilibrium microstructure, while the structural biology work is largely centered around the structure-function relationship. In the interdisciplinary topics, the hierarchical structure of the self-assembled exotic nanostructures is elucidated.

Some of the techniques used in softmatter research can be directly applied to industrial research and development problems.

The upgrade (07/2013 to 07/2014):

After nearly two decades of successful operation, ID02 was designated as one of the ESRF upgrade beamlines (TRUSAXS). A major upgrade during 2013-2014 has led to a significant enhancement of the available scattering vector range and resolution. Improvements of source properties and detector performance, new scientific challenges together with accumulated experience in beamline operation have contributed to this new design.

The upgrade comprised a novel focusing scheme chosen to preserve the brilliance of the source, a new detector vacuum tube of 34 m long and 2 m in diameter which houses a suit of detectors optimised for different applications. The focusing optics allows moderate adjustment of beam size at the sample position or detector according to the experimental requirements (e.g. reduction of radiation damage, increase of resolution, etc.).
All three techniques, SAXS, WAXS and USAXS, are combined to a single instrument with sample-to-detector distance variable from 0.8 m to 31 m. The new beamline offers the unique possibility of time resolved USAXS experiments with two dimensional detectors. This has opened up new opportunities for probing transient processes and oriented systems in the ultra small-angle range. In addition, the coherence of the beam is exploited to perform ultra small-angle X-ray photon correlation spectroscopy (USA-XPCS) down to the sub-millisecond range.

Principal Techniques

  • Time-resolved small- & wide- angle X-ray scattering (combined SAXS/WAXS)

  • High resolution ultra small-angle X-ray scattering (USAXS)

  • Ultra small-angle X-ray photon correlation spectroscopy (USA-XPCS)

    This setup uses the monochromatic, highly collimated, and intense beam in a pinhole configuration. Combined (U)SAXS and WAXS provides a wide q-range (0.001 nm-1 to 50 nm-1 at 0.1 nm wavelength) with high angular resolution. Both SAXS and WAXS employs area detectors, and the SAXS detector distance can be varied from 0.8 m to 31 m.  The q-resolution at 31 m is about 0.0004 nm-1 for a wavelength of 1 Å , and a beamsize and detector resolution of 40 µm. With the highest degree of collimation,  a q-resolution  down to 0.00015 nm-1 can be obtained. The tight collimation and widely separated optical components provide a very low background. All the measured intensities can be normalised to an absolute intensity scale.

[1] T. Narayanan, M. Sztucki, P. Van Vaerenbergh, J. Le´onardon, J. Gorini, L. Claustre, F. Sever, J. Morse and P. Boesecke, J. Appl. Cryst., 51, 1511 (2018); https://doi.org/10.1107/S1600576718012748.

[2] P. Van Vaerenbergh, J. Le´onardon, M. Sztucki, P. Boesecke, J. Gorini, L. Claustre, F. Sever, J. Morse, and T. Narayanan,  AIP Conf. Proc., 1741, 030034 (2016); https://doi.org/10.1063/1.4952857

[3] J. Léonardon, P. Van Vaerenbergh, T. Narayanan, et al., Design of a new detector tube for wide, small and ultra small-angle X-ray scattering, MEDSI Conf. Proc. (2014).


Further Information