Speaker
Description
CoSAXS is a versatile SAXS/WAXS beamline at the 3 GeV diffraction-limited ring of MAX IV Laboratory in Sweden. The optical design [$*$ ,$**$] delivers X-ray beams from 4–20 keV with 0.01% bandwidth and photon flux of 10¹²–10¹³ ph/s, with up to 10% coherent flux at 7.1 keV. Beam sizes at the sample range from 250 × 250 μm² to 30 × 15 μm² (FWHM). The SAXS detector (Eiger2 4M) moves longitudinally and transversely inside a 15 m vacuum vessel. The fixed WAXS detector (Pilatus3) is positioned at the vessel entrance, and a Mythen2 1K in air provides 1D WAXS. The q-range spans ~6 × 10⁻⁴ to 3 Å⁻¹ (d-spacings: 1 μm–2 Å). Supported techniques include solution and solid SAXS/WAXS, SEC/AF4-SAXS [$*******$], USAXS, TRSS in the ms range [$***$, $****$], and coherent scattering [$*****$]. Sample environments include magnetic fields, rheology, biaxial stretching [$******$], and microfluidics [$********$]. Control and data systems are described in [$****$]. After nearly 5 years of operation, CoSAXS has completed 190 proposals, including 19 proprietary research projects. The beamline has a high demand and has contributed to 47 publications.
Footnotes
$*$ A.J. Allen, J. Appl. Cryst. 56, 787 (2023)
$**$ T.S. Plivelic, et al. AIP Conf. Proc. 2054, 030013 (2019)
$***$ O. Berntsson, et al. J. Synchrotron Rad. 29, 555 (2022)
$****$ V. Silva, et al. JACoW ICALEPCS2023 713 (2023)
$*****$ M. Kahnt, et al. J. Synchrotron Rad. 28 1948 (2022)
$******$ P. Mota-Santiago, et al. J. Appl. Cryst. 56 967 (2023)
$*******$ H. Bolinsson, et al Anal. Bioanal. Chem. 415, 6237 (2023)
$********$ J. Gilbert, et al. J. Colloid Interface Sci 660, 66 (2024)
