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Contribution Poster

X-ray structural analysis

The project of the beam-line "Structure investigation" at synchrotron radiation source SKIF in Novosibirsk

Speakers

  • Prof. Boris TOLOCHKO
  • Mr. Oleg EVDOKOV

Primary authors

Co-authors

Content

A new beamline "Structure investigation" will be put into operation in the test mode at the SKIF synchrotron radiation source in 2024. The beamline will have stations: 1) "Precision diffraction / anomalous scattering"; 2) "In situ diffraction"; 3) "Single crystal diffraction"; 4) «USAXS / reflectometry». The stations will supervise accordingly: 1) Institute of Catalysis of the SB RAS; 2) Institute of Solid State Chemistry and Mechanochemistry of the SB RAS; 3) Institute of Inorganic Chemistry of SB RAS; 4) Shubnikov Institute of Crystallography RAS. The beamline will use the radiation from a 300-pole superconducting undulator with a 1.2 T field. At a photon energy of 7 keV, the brightness will be 4*10 ^ 21 phot / (sec mm^2 mrad^2 0.1% BW). The energy range will be from 5 to 50 keV. Required channel element will be beam monitor. The monitor will determine both the intensity of the beam and its position with an accuracy of 1 micron. The read out frequency of monitor will be 100 MHz, which will allow to determine the position of the radiation from each bunch of electrons. A dual monochromator with a fixed output can provide monochromatization from 10^-2 to 10^-4. If necessary, a monochromator can skip a white beam. Focusing mirrors will be used, which will ensure focusing and cutting of high harmonics if necessary. To work in a high energy area, refractive optics will be used. Both focusing and defocusing lens will be used. A fast chopper will be used, for investigating of fast processes, with exposure from a single bunch with continuance near 73 ps. The main detector at the new station will be the coordinate-sensitive detectors DIMEX [1], whose use at the VEPP-3 source and showed great potential possibilities associated with the use of synchrotron radiation for the study of fast processes [2]. Detectors OD-3M [3] and PILATUS will also be used.

[1] V.M. Aulchenko, B.P. Tolochko, L.I. Shekhtman, et al. Fast high resolutuion gaseous detectors for diffraction experiments and imaging at synchrotron radiation beam. Nuclear Instr. and Meth. A 623 (2010) 600-602. [2] K.A. Ten, E.R. Pruuel, V.M. Titov. SAXS Measurement and Dynamics of Condensed Carbon Growth at Detonation of Highly Explosive. Fullerenes, Nanotubes, and Carbon Nanostructures. 20: 587-593. 2012. [3] Aulchenko, V.M., Evdokov, O.V., Kutovenko, V.D., Pirogov, B.Ya., Sharafutdinov, M.R., Titov, V.M., Tolochko, B.P., Vasiljev, A.V., Zhogin, I.A., Zhulanov, V.V. One-coordinate X-ray detector OD-3M (2009) Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 603 (1-2), pp. 76-79.