Commissioning of the cryogenic sample environment for the TARUMÃ station at the CARNAÚBA beamline at Sirius/LNLS

Abstract TARUMÃ is a multi-technique station at CARNAÚBA (Coherent X-Ray Nanoprobe Beamline) the 4th-generation light source Sirius Brazilian Synchrotron Light Laboratory (LNLS). With tender-to-hard energy range from 2.05 to 15 keV and fully coherent nanoprobe focused via an all-achromatic KB (Kirkpatrick-Baez) optics, it can be used for simultaneous multiple nanoscale X-ray techniques in 2D 3D. This includes ptychography diffraction imaging (ptycho-CDI), absorption spectroscopy (XAS), (XRD), fluorescence (XRF) luminescence (XEOL). In particular, tender energies study elements that are commonly present soft biological samples, ensuring unique position of Life Environmental Sciences program LNLS. Still, enabling this experiments sometimes only possible with cryogenically cooled samples as high beam dose result both chemical structural damage ambient temperature conditions. At TARUMÃ, comply heavily occupied volume around sample positioning architecture, enabled by open-atmosphere cryogenic system based on commercial cryojet custom-designed holder. Following predictive engineering approach, capable conditioning down 155K, whilst avoiding icing condensation nearby instrumentation preserving nanometer-level requirements scanning station. Here we commissioning results referred along first beamline measurements.